intellipak™ with symbio™ 800 · 2020-03-04 · ©2019 ingersoll rand rt-svx063c-en introduction...

SSAAFFEETTYY WWAARRNNIINNGGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, andair-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or alteredequipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in theliterature and on the tags, stickers, and labels that are attached to the equipment.

September 2019 RRTT--SSVVXX006633CC--EENN

IntelliPak™™with Symbio™™ 800Commercial Rooftop Air Conditioners

““AA”” aanndd llaatteerr ddeessiiggnn sseeqquueenncceeRRAA *20, *25, *30, *40, *50, *55,*60, *70, *75

Installation, Operation,and Maintenance

©2019 Ingersoll Rand RT-SVX063C-EN

IntroductionRead this manual thoroughly before operating orservicing this unit.

Warnings, Cautions, and NoticesSafety advisories appear throughout this manual asrequired. Your personal safety and the properoperation of this machine depend upon the strictobservance of these precautions.

The three types of advisories are defined as follows:

WARNINGIndicates a potentially hazardous situationwhich, if not avoided, could result in death orserious injury.

CAUTIONIndicates a potentially hazardous situationwhich, if not avoided, could result in minor ormoderate injury. It could also be used to alertagainst unsafe practices.

NOTICEIndicates a situation that could result inequipment or property-damage onlyaccidents.

Important Environmental ConcernsScientific research has shown that certain man-madechemicals can affect the earth’s naturally occurringstratospheric ozone layer when released to theatmosphere. In particular, several of the identifiedchemicals that may affect the ozone layer arerefrigerants that contain Chlorine, Fluorine and Carbon(CFCs) and those containing Hydrogen, Chlorine,Fluorine and Carbon (HCFCs). Not all refrigerantscontaining these compounds have the same potentialimpact to the environment. Trane advocates theresponsible handling of all refrigerants-includingindustry replacements for CFCs and HCFCs such assaturated or unsaturated HFCs and HCFCs.

Important Responsible RefrigerantPracticesTrane believes that responsible refrigerant practicesare important to the environment, our customers, andthe air conditioning industry. All technicians whohandle refrigerants must be certified according to localrules. For the USA, the Federal Clean Air Act (Section608) sets forth the requirements for handling,reclaiming, recovering and recycling of certainrefrigerants and the equipment that is used in theseservice procedures. In addition, some states ormunicipalities may have additional requirements thatmust also be adhered to for responsible managementof refrigerants. Know the applicable laws and followthem.

WWAARRNNIINNGGPPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinnggRReeqquuiirreedd!!FFaaiilluurree ttoo ffoollllooww ccooddee ccoouulldd rreessuulltt iinn ddeeaatthh oorrsseerriioouuss iinnjjuurryy..AAllll ffiieelldd wwiirriinngg MMUUSSTT bbee ppeerrffoorrmmeedd bbyy qquuaalliiffiieeddppeerrssoonnnneell.. IImmpprrooppeerrllyy iinnssttaalllleedd aanndd ggrroouunnddeeddffiieelldd wwiirriinngg ppoosseess FFIIRREE aanndd EELLEECCTTRROOCCUUTTIIOONNhhaazzaarrddss.. TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoolllloowwrreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aannddggrroouunnddiinngg aass ddeessccrriibbeedd iinn NNEECC aanndd yyoouurr llooccaall//ssttaattee//nnaattiioonnaall eelleeccttrriiccaall ccooddeess..

WWAARRNNIINNGGPPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE))RReeqquuiirreedd!!FFaaiilluurree ttoo wweeaarr pprrooppeerr PPPPEE ffoorr tthhee jjoobb bbeeiinngguunnddeerrttaakkeenn ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroommppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaallhhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaallaanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthheeiinnssttrruuccttiioonnss bbeellooww::

•• BBeeffoorree iinnssttaalllliinngg//sseerrvviicciinngg tthhiiss uunniitt,,tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE rreeqquuiirreedd ffoorrtthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn ((EExxaammpplleess;; ccuuttrreessiissttaanntt gglloovveess//sslleeeevveess,, bbuuttyyll gglloovveess,, ssaaffeettyyggllaasssseess,, hhaarrdd hhaatt//bbuummpp ccaapp,, ffaallll pprrootteeccttiioonn,,eelleeccttrriiccaall PPPPEE aanndd aarrcc ffllaasshh ccllootthhiinngg))..AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee MMaatteerriiaall SSaaffeettyyDDaattaa SShheeeettss ((MMSSDDSS))//SSaaffeettyy DDaattaa SShheeeettss((SSDDSS)) aanndd OOSSHHAA gguuiiddeelliinneess ffoorr pprrooppeerr PPPPEE..

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouusscchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaatteeMMSSDDSS//SSDDSS aanndd OOSSHHAA//GGHHSS ((GGlloobbaallHHaarrmmoonniizzeedd SSyysstteemm ooff CCllaassssiiffiiccaattiioonn aannddLLaabbeelllliinngg ooff CChheemmiiccaallss)) gguuiiddeelliinneess ffoorriinnffoorrmmaattiioonn oonn aalllloowwaabbllee ppeerrssoonnaall eexxppoossuurreelleevveellss,, pprrooppeerr rreessppiirraattoorryy pprrootteeccttiioonn aannddhhaannddlliinngg iinnssttrruuccttiioonnss..

•• IIff tthheerree iiss aa rriisskk ooff eenneerrggiizzeedd eelleeccttrriiccaallccoonnttaacctt,, aarrcc,, oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuuttoonn aallll PPPPEE iinn aaccccoorrddaannccee wwiitthh OOSSHHAA,, NNFFPPAA7700EE,, oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttssffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinnggtthhee uunniitt.. NNEEVVEERR PPEERRFFOORRMM AANNYY SSWWIITTCCHHIINNGG,,DDIISSCCOONNNNEECCTTIINNGG,, OORR VVOOLLTTAAGGEE TTEESSTTIINNGGWWIITTHHOOUUTT PPRROOPPEERR EELLEECCTTRRIICCAALL PPPPEE AANNDDAARRCC FFLLAASSHH CCLLOOTTHHIINNGG.. EENNSSUURREEEELLEECCTTRRIICCAALL MMEETTEERRSS AANNDD EEQQUUIIPPMMEENNTT AARREEPPRROOPPEERRLLYY RRAATTEEDD FFOORR IINNTTEENNDDEEDDVVOOLLTTAAGGEE..

RT-SVX063C-EN 3

WWAARRNNIINNGGFFoollllooww EEHHSS PPoolliicciieess!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..

•• AAllll IInnggeerrssoollll RRaanndd ppeerrssoonnnneell mmuusstt ffoolllloowwIInnggeerrssoollll RRaanndd EEnnvviirroonnmmeennttaall,, HHeeaalltthh aannddSSaaffeettyy ((EEHHSS)) ppoolliicciieess wwhheenn ppeerrffoorrmmiinngg wwoorrkkssuucchh aass hhoott wwoorrkk,, eelleeccttrriiccaall,, ffaallll pprrootteeccttiioonn,,lloocckkoouutt//ttaaggoouutt,, rreeffrriiggeerraanntt hhaannddlliinngg,, eettcc.. AAllllppoolliicciieess ccaann bbee ffoouunndd oonn tthhee BBOOSS ssiittee.. WWhheerreellooccaall rreegguullaattiioonnss aarree mmoorree ssttrriinnggeenntt tthhaanntthheessee ppoolliicciieess,, tthhoossee rreegguullaattiioonnss ssuuppeerrsseeddeetthheessee ppoolliicciieess..

•• NNoonn--IInnggeerrssoollll RRaanndd ppeerrssoonnnneell sshhoouulldd aallwwaayyssffoollllooww llooccaall rreegguullaattiioonnss..

Overview of ManualNNoottee:: This document is customer property and must be

retained by the unit owner for use bymaintenance personnel.

These units are equipped with electronic Unit ControlModules (UCM). Refer to the “Start-Up” and “TestMode” procedures within this Installation, Operation,and Maintenance manual and the latest edition of theappropriate programming manual for Constant Volume(CV), Variable Air Volume (VAV), or Single ZoneVariable Air Volume (SZVAV) applications beforeattempting to operate or service this equipment.

IImmppoorrttaanntt:: The procedures discussed in this manualshould only be performed by qualified andexperienced HVAC technicians.

This booklet describes proper installation, start-up,operation, and maintenance procedures forapplications. By carefully reviewing the informationwithin this manual and following the instructions, therisk of improper operation and/or component damagewill be minimized.

NNoottee:: One copy of the appropriate service literatureships inside the control panel of each unit.

It is important that periodic maintenance be performedto help assure trouble-free operation. Should

equipment failure occur, contact a qualified serviceorganization with qualified, experienced HVACtechnicians to properly diagnose and repair thisequipment.

IImmppoorrttaanntt:: DO NOT release refrigerant to theatmosphere!

If adding or removing refrigerant is required, theservice technician must comply with all federal, state,and local laws.

CopyrightThis document and the information in it are theproperty of Trane, and may not be used or reproducedin whole or in part without written permission. Tranereserves the right to revise this publication at any time,and to make changes to its content without obligationto notify any person of such revision or change.

TrademarksAll trademarks referenced in this document are thetrademarks of their respective owners.

Factory TrainingFactory training is available through Trane University™to help you learn more about the operation andmaintenance of your equipment. To learn aboutavailable training opportunities contact TraneUniversity™.

Online: www.trane.com/traneuniversity

Phone: 855-803-3563

Email: [email protected]

Revision History• Updated Minimum outside air temperature, see

Low Ambient Condenser Fans section in Operationchapter.

• Updated Digit 26 in Model Number.

• Running edits included in this version.

IInnttrroodduuccttiioonn

4 RT-SVX063C-EN

Model Number Description. . . . . . . . . . . . . . . . . 6

General Information . . . . . . . . . . . . . . . . . . . . . . . . 8Unit Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Compressor Nameplate . . . . . . . . . . . . . . . . . . . 8

Gas Heat Nameplate . . . . . . . . . . . . . . . . . . . . . . 8

Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Exterior Inspection . . . . . . . . . . . . . . . . . . . . 9Inspection for ConcealedDamage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Factory Warranty Information . . . . . . . . . . . . . 9All Unit Installations. . . . . . . . . . . . . . . . . . . 9Additional Requirements for UnitsRequiring Disassembly . . . . . . . . . . . . . . . 10

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . 11Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Electrical Entry Details . . . . . . . . . . . . . . . . . . . 22

Access Clearances . . . . . . . . . . . . . . . . . . . . . . . 23

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Roof Curb and Ductwork . . . . . . . . . . . . . . . . . 25

Unit Rigging and Placement . . . . . . . . . . . . . . 25

General Installation Requirements . . . . . . . . 27Setting the Unit . . . . . . . . . . . . . . . . . . . . . . 27Main Electrical Power . . . . . . . . . . . . . . . . 27Field Installed Control Wiring . . . . . . . . . 27Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . 27Units with 200V or 230V ElectricHeat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27O/A Pressure Sensor and TubingInstallation (All ) . . . . . . . . . . . . . . . . . . . . . 27Voltage Supply . . . . . . . . . . . . . . . . . . . . . . 28

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Electrical Service Sizing . . . . . . . . . . . . . . 29

Main Unit Power Wiring. . . . . . . . . . . . . . . . . . 34

Supply Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Remove Shipping Tie Down . . . . . . . . . . 35O/A Sensor and TubingInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Refrigeration System . . . . . . . . . . . . . . . . . . . . 37Condensate Drain Connections. . . . . . . . 37Compressor Crankcase Heaters . . . . . . . 38

Gas Heat Units . . . . . . . . . . . . . . . . . . . . . . . . . . 38Connecting the Gas Supply Line tothe Furnace Gas Train . . . . . . . . . . . . . . . . 40Flue Assembly and Rain ShieldInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . 44Gas Furnace Condensate Drain. . . . . . . . 45

Electric Heat Units . . . . . . . . . . . . . . . . . . . . . . . 45

Economizer and Relief Air DamperAdjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Relief Air Dampers . . . . . . . . . . . . . . . . . . . 45Outside Air & Return Air DamperOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Adjust the Outside Air DamperTravel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Startup the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Electrical Phasing. . . . . . . . . . . . . . . . . . . . . . . . 53

Verifying Proper Fan Operation . . . . . . . . . . . 53

Direct-Drive Supply Fan SpeedAdjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

System Airflow Measurements . . . . . . . . . . . 55VAV and CV Systems with DDPSupply Fan and Motorized ImpellerRelief Fan (optional) . . . . . . . . . . . . . . . . . . 55Traq™ Sensor AirflowMeasurement. . . . . . . . . . . . . . . . . . . . . . . . 56

Gas Furnace Startup . . . . . . . . . . . . . . . . . . . . . 56Staged, Modulating, and UltraModulating . . . . . . . . . . . . . . . . . . . . . . . . . . 56High-Fire Adjustment. . . . . . . . . . . . . . . . . 56Low-Fire Adjustment (250 & 350MBH Two Staged only) . . . . . . . . . . . . . . . 57

Final Unit Checkout . . . . . . . . . . . . . . . . . . . . . . 58

Trane Startup Checklist . . . . . . . . . . . . . . . . . . 59Critical Control Parameters and DryBulb Changeover Map. . . . . . . . . . . . . . . . 60

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table of Contents

RT-SVX063C-EN 5

Sequence of Operation. . . . . . . . . . . . . . . . . . . 62SZVAV Cooling Sequence ofOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Units with Traq™ Sensor . . . . . . . . . . . . . 63Low Charge Protection . . . . . . . . . . . . . . . 63Frostat™ Control. . . . . . . . . . . . . . . . . . . . . 63Balanced Starts . . . . . . . . . . . . . . . . . . . . . . 63Units Equipped with 100%Modulating Relief . . . . . . . . . . . . . . . . . . . . 63Modulating Hot Gas ReheatSequence of Operation . . . . . . . . . . . . . . . 63Gas Heating Sequence ofOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Electric Heat Sequence ofOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Rapid Restart Operation . . . . . . . . . . . . . . . . . . 65

External Fan Control Operation . . . . . . . . . . . 65

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Constant Volume SystemControls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Compressor Motor WindingThermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

CSHD and CSHWCompressors . . . . . . . . 66CSHN Compressors . . . . . . . . . . . . . . . . . . 66VZH Variable SpeedCompressors . . . . . . . . . . . . . . . . . . . . . . . . 66

Performance Data . . . . . . . . . . . . . . . . . . . . . . . 68Supply Fan Curves . . . . . . . . . . . . . . . . . . . 68Relief Fan Curves . . . . . . . . . . . . . . . . . . . . 71Component Static PressureDrops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . 76

Service and Maintenance. . . . . . . . . . . . . . . . . . 77Monthly Maintenance. . . . . . . . . . . . . . . . . . . . 80

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Cooling Season . . . . . . . . . . . . . . . . . . . . . . 80Heating Season . . . . . . . . . . . . . . . . . . . . . . 81Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 81

Scroll Compressor Replacement . . . . . . . . . . 82Refrigeration System. . . . . . . . . . . . . . . . . 82CSHD Compressors . . . . . . . . . . . . . . . . . . 98CSHW and CSHN Compressors . . . . . . . 98VZH Variable SpeedCompressors . . . . . . . . . . . . . . . . . . . . . . . . 98Electrical Phasing . . . . . . . . . . . . . . . . . . . . 99Variable Speed Manifolded withFixed Speed Compressors . . . . . . . . . . . . 99Precision Suction Restrictor. . . . . . . . . . . 99VFD Programming Parameters(Supply/Condenser for Low AmbientOption). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100eFlex™ Compressor VFDProgramming Parameters . . . . . . . . . . . 104

Microchannel Condenser Coil Repair andReplacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Fall Restraint . . . . . . . . . . . . . . . . . . . . . . . 105

Final Process . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 108

Warranty and Liability Clause . . . . . . . . . . . . 110COMMERCIAL EQUIPMENT - 20 TONSAND LARGER AND RELATEDACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . 110

TTaabbllee ooff CCoonntteennttss

6 RT-SVX063C-EN

Model Number Description

Digit 1 — Unit Type

R = Packaged Rooftop

Digit 2 — Unit Function

A = DX Cooling, No HeatE = DX Cooling, Electric HeatF = DX Cooling, Natural Gas HeatX = DX Cooling, No Heat, Extended Casing

Digit 3, 4, 5 — Nominal Capacity

020 = 20 Tons025 = 25 Tons030 = 30 Tons040 = 40 Tons050 = 50 Tons055 = 55 Tons060 = 60 Tons070 = 70 Tons075 = 75 Tons

Digit 6— Heat Type & Capacity

0 = None1 = Natural Gas — 250 MBh2 = Natural Gas — 350 MBh3 = Natural Gas — 500 MBh4 = Natural Gas — 850 MBh7 = External HeatA = Electric — 30 kWB = Electric — 60 kWC = Electric — 90 kWD = Electric — 120 kWE = Electric — 150 kWF = Electric — 190 kW

Digit 7 —Heat Performance

0 = None1 = Gas — Staged, Aluminized Steel2 = Gas — Staged, Stainless Steel3 = Gas — Modulating, Stainless Steel4 = Gas — Ultra Modulating, Stainless SteelA = Electric — Staged

Digit 8 — Unit Voltage

E = 200/60/3F = 230/60/34 = 460/60/35 = 575/60/3 (WYE)

Digit 9 — Refrigeration SystemPerformance1 = Standard Efficiency & Capacity2 = High Efficiency & Capacity3 = eFlex™ – Variable Speed Compressor w/High Capacity

Digit 10, 11—Design Sequence

AA= Current Design Sequence

Digit 12 —Development Sequence

A = Development Sequence

Digit 13 — Airflow Direction

A = Downflow Supply & Upflow Return

Digit 14 — System Control

0 = Constant Volume (ZoneTemperature)1 = Constant Volume (Discharge AirTemperature)2 = Single Zone VAV (Zone Temperature)3 =Multi Zone VAV (Discharge AirTemperature)

Digit 15 —Dual Supply Fan - DirectDriveA = 16.5 inch, 80% widthB = 16.5 inch, 100%widthD = 18.2 inch, 100% widthE= 20.0 inch, 80% widthF= 20.0 inch, 100% widthG = 22.2 inch, 80%widthH= 22.2 inch, 100% widthJ = 24.5 inch, 80% widthK= 24.5 inch, 100% widthM = 27.0 inch, 100%width

Digit 16 —Dual Supply Fan MotorType1 = ODP w/ RPM greater than or equal to16002 = ODP w/ RPM less than 1600

Digit 17 —Dual Supply Fan Motor

A = 3 hp (1.5 hp per)B = 6 hp (3 hp per)C= 10 hp (5 hp per)D = 15 hp (7.5 hp per)E= 20 hp (10 hp per)F= 30 hp (15 hp per)G = 40 hp (20 hp per)H= 50 hp (25 hp per)

Digit 18 — Relief Option

0 = None1 = Barometric Relief2 = Relief Fan - Direct Drive & Variable Speed

Digit 19— Relief Fan Motor

0 = None2 = 6 hp3 = 8 hp4 = 12 hp5 = 15 hp6 = 16 hp7 = 23 hp

Digit 20— Space PressureManagement0 = None1 = Statitrac

Digit 21— Variable Frequency Drive(VFD) Bypass0 = NoneA = Supply

Digit 22— Future Use

0 = None

Digit 23— Ventilation Override Mode

0 = None1 = Yes

Digit 24— Pre-Evaporator Coil Filter

A = 2" MERV 4 PanelB = 2" MERV 8 PanelC = 4" MERV 8 PanelD = 4" MERV 14 PanelE = 2" MERV 8 Panel & MERV 14 CartridgeF = Rack Only - 2" PanelG = Rack Only - 4" PanelH = Rack Only - 2" Panel & Cartridge

Digit 25— Final Filter

0 = None1 = 2" MERV 8 Panel & MERV 14 Cartridge2 = Rack Only - 2" Panel & Cartridge

Digit 26— Filter Monitoring

0 = NoneA = Pre-Evaporator FilterC = Pre-Evaporator & Final Filter

RT-SVX063C-EN 7

Digit 27— Outside Air

0 = None1 = 0-25%Manual Damper2 = 0-100% Economizer3 = 0-100% Economizer w/Demand CtrlVentilation (DCV)4 = 0-100% Economizer w/Traq & DCV

Digit 28— Outside Air Control

0 = NoneA = Economizer w/Dry BulbB = Economizer w/Reference EnthalpyC = Economizer w/Comparative Enthalpy

Digit 29— Damper w/ Fault DetectionDiagnostics0 = None1 = Low Leak2 = Ultra Low Leak

Digit 30-35— Future Use

0 = None

Digit 36— Hinged Access Doors

A = Single Side


0 = None

Digit 39— Ambient Control

0 = Standard1 = Low Ambient w/Variable SpeedCondenser Fan

Digit 40— Condenser Coil Coating

A = NoneB = Corrosion Protected

Digit 41 —Modulating Hot Gas Reheat& Hot Gas Bypass0 = None1 = Hot Gas Reheat3 = Hot Gas Bypass4 = Hot Gas Reheat & Hot Gas Bypass

Digit 42 — Service Valves

A = DischargeB = Compressor Isolation (Suction &Discharge)

Digit 43 — Evaporator Coil Drain Pan

1 = Galvanized Steel2 = Stainless Steel3 = Galvanized Steel w/Condensate OverflowSwitch4 = Stainless Steel w/Condensate OverflowSwitch

Digit 44 — Power Supply

1 = Single Point

Digit 45 —Unit Mounted PowerConnectionA = Terminal BlockB = Non-Fused DisconnectC= Non-Fused Disconnect w/PoweredConvenience Outlet

Digit 46 — Communication Protocol

0 = None1 = BACNet®2 = Air-Fi™Wireless3 = LonTalk®4 =Modbus

Digit 47 — Power Monitor

0 = None1 = Yes

Digit 48— Controls ExpansionHardware0 = NoneA = Expansion Module

Digit 49— Rapid Restart

0 = None1 = Yes


0 = None

Digit 58— Agency Approval

1 = cULus Certification

Digit 59–60— Future Use

0 = None

MMooddeell NNuummbbeerr DDeessccrriippttiioonn

8 RT-SVX063C-EN

General InformationUnit NameplateOne Mylar unit nameplate is located on the outsideupper left corner of the control panel door. It includesthe unit model number, serial number, electricalcharacteristics, refrigerant charge, unit wiring diagramnumbers, as well as other pertinent unit data. A smallmetal nameplate with the Model Number, SerialNumber, and Unit Weight is located just above theMylar nameplate, and a third nameplate is located onthe inside of the control panel door.

Compressor NameplateThe Nameplate for the Scroll Compressor is located onthe compressor lower housing. Max amps is listed onthe nameplate and is the absolute highest amp load onthe compressor at any operating condition (does notinclude locked rotor amps or inrush). This value shouldnever be exceeded.

Gas Heat NameplateThe nameplate for the Gas Heater is located on theinside of the gas heat enclosure. Allowable operatingvalues of Min and Max input rate, manifold pressure,and air rise for the heater is listed on the nameplate.

Unit DescriptionEach single-zone rooftop air conditioner ships fullyassembled from the factory. An optional roof curb,specifically designed for the units is available fromTrane. The roof curb kit must be field assembled andinstalled according to the latest edition of the roof curbinstallation manual.

Trane Commercial Rooftop Units are controlled by aSymbio 800 control system that consists of a networkof modules and are referred to as Low Level IntelligentDevices (LLID). The acronym (LLID) is used extensivelythroughout this document when referring to the controlsystem network. These modules through Proportional/Integral control algorithms perform specific unitfunctions which provide the best possible comfort levelfor the customer.

They are mounted in the control panels and are factorywired to their respective internal components. Theyreceive and interpret information from other unitmodules, sensors, remote panels, and customer binarycontacts to satisfy the applicable request foreconomizing, mechanical cooling, heating, andventilation.

RT-SVX063C-EN 9

Pre-InstallationUnit InspectionTo protect against loss due to damage incurred intransit, perform inspection immediately upon receipt ofthe unit.

Exterior InspectionIf the job site inspection reveals damage or materialshortages, file a claim with the carrier immediately.Specify the type and extent of the damage on the bill oflading before signing. Notify the appropriate salesrepresentative.

IImmppoorrttaanntt:: Do not proceed with installation of adamaged unit without salesrepresentative’s approval.

• Visually inspect the complete exterior for signs ofshipping damages to unit or packing material.

• Verify that the nameplate data matches the salesorder and bill of lading.

• Verify that the unit is properly equipped and thereare no material shortages.

• Verify that the power supply complies with the unitnameplate and electric heater specifications.

Inspection for Concealed DamageVisually inspect the components for concealed damageas soon as possible after delivery and before it isstored.

Do NOT walk on the sheet metal base pans. Bridgingbetween the unit’s main supports may consist ofmultiple 2 by 12 boards or sheet metal grating.

WWAARRNNIINNGGNNoo SStteepp SSuurrffaaccee!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDoo nnoott wwaallkk oonn tthhee sshheeeett mmeettaall ddrraaiinn ppaann.. WWaallkkiinnggoonn tthhee ddrraaiinn ppaann ccoouulldd ccaauussee tthhee ssuuppppoorrttiinngg mmeettaallttoo ccoollllaappssee aanndd rreessuulltt iinn tthhee ooppeerraattoorr//tteecchhnniicciiaannffaalllliinngg..

If concealed damage is discovered:

• Notify the carrier’s terminal of the damageimmediately by phone and by mail.

• Concealed damage must be reported within 15days.

• Request an immediate, joint inspection of thedamage with the carrier and consignee.

• Stop unpacking the unit.

• Do not remove damaged material from receivinglocation.

• Take photos of the damage, if possible.

• The owner must provide reasonable evidence thatthe damage did not occur after delivery.

RepairNotify the appropriate sales representative beforearranging unit installation or repair.

IImmppoorrttaanntt:: Do not repair unit until the damage hasbeen inspected by the carrier’srepresentative.

StorageStore unit in a level and dry location. Use adequateblocking under the base rail. If unit is not level andsupported adequately, damage may occur whenremoving screws and opening doors.

Take precautions to prevent condensate formationinside the unit electrical components and motors when:

• The unit is stored before it is installed; or,

• The unit is set on the roof curb and temporaryauxiliary heat is provided in the building.

Isolate all side panel service entrances and base panopenings (e.g., conduit holes, S/A and R/A openings,and flue openings) to minimize ambient air fromentering the unit until it is ready for startup.

NNoottee:: Do not use the unit heater as temporary heatwithout completing the startup proceduresdetailed under Startup information.

The manufacturer will not assume responsibility forequipment damage resulting from accumulation ofcondensate on the unit electrical components.

Unit ClearancesSee “Dimensional Data,” p. 11 for minimum operatingand service clearances for either a single or multipleunit installation.

These clearances are the minimum distancesnecessary for adequate service, cataloged unitcapacity, and peak operating efficiency. Providing lessthan the recommended clearances may result incondenser coil starvation, “short-circulating” ofexhaust and economizer airflows, or recirculation ofhot condenser air.

Factory Warranty InformationCompliance with the following is required to preservethe factory warranty:

All Unit InstallationsStartup MUST be performed by Trane, or an authorizedagent of Trane, to VALIDATE this WARRANTY.Contractor must provide a two-week startup

10 RT-SVX063C-EN

notification and true start date to Trane (or an agent ofTrane specifically authorized to perform startup).

Additional Requirements for UnitsRequiring DisassemblyWhen a new fully assembled IntelliPak is shipped andreceived from our Trane manufacturing location, and,for any reason, it requires disassembly or partialdisassembly, which could include but is not limited tothe evaporator, condenser, control panel, compressor/motor, factory mounted starter, or any othercomponents originally attached to the fully assembledunit, compliance with the following is required topreserve the factory warranty:

• Trane, or an agent of Trane specifically authorizedto perform start-up and warranty of Trane®products, will perform or have direct on-sitetechnical supervision of the disassembly andreassembly work.

• The installing contractor must notify Trane, or anagent of Trane specifically authorized to perform

start-up and warranty of Trane® products, twoweeks in advance of the scheduled disassemblywork to coordinate the disassembly andreassembly work.

• Start-up must be performed by Trane or an agent ofTrane specifically authorized to perform start-upand warranty of Trane® products.

Trane, or an agent of Trane specifically authorized toperform startup and warranty of Trane® products, willprovide qualified personnel and standard hand tools toperform the disassembly work at a location specifiedby the contractor. The contractor shall provide therigging equipment, such as chain falls, gantries, cranes,forklifts, etc., necessary for the disassembly andreassembly work and the required qualified personnelto operate the necessary rigging equipment. See“Warranty and Liability Clause,” p. 110 for additionaldetails.

PPrree--IInnssttaallllaattiioonn

RT-SVX063C-EN 11

Dimensional DataTable 1. Unit Dimensions

Tons

RefrigerationSystem

PerformanceUnit Function Relief Option Outside Air Pre-Evaporator Coil

FilterOverallLength(in.)

Foot-printLength(in.)

H(in) W (in)

Type Digit9

Type Digit2

Type Digit18

Type Digit 27 Type Digit 24

20-30

All 1,2,3 No Heat A

Relief Fan 2 Yes 1,2,3,4 Panel A,B,C,D,F,G 220.88 213.00

81.59 90.63

Cartridge E,H 239.86 232.00BarometricRelief 1 Yes 1,2,3,4 Panel A,B,C,D,F,G 220.85 182.01

Cartridge E,H 239.95 201.01

None 0 None 0Panel A,B,C,D,F,G 182.01 182.01


All 1,2,3

ElectricHeat,GasHeat,

No Heat -ExtendedCasing

EFX

Relief Fan 2 Yes 1,2,3,4 Panel A,B,C,D,F,G 270.61 262.72Cartridge E,H 289.58 281.72

BarometricRelief 1 Yes 1,2,3,4 Panel A,B,C,D,F,G 270.61 231.74




40-55

All 1,2,3 No Heat A


81.59 90.63





All 1,2,3



EFX






60

All 1,2,3 No Heat A


81.59 116.13





All 1,2,3



EFX






12 RT-SVX063C-EN

Table 1. Unit Dimensions (continued)

Tons

RefrigerationSystem




H(in) W (in)

Type Digit9

Type Digit2

Type Digit18


70

Standard 1

No Heat A


81.59 116.13




Cartridge E,H 248.66 248.66ElectricHeat,GasHeat,


EFX






HighEfficiency 2

No Heat A







EFX






eFlex™ 3

No Heat A







EFX






DDiimmeennssiioonnaall DDaattaa

RT-SVX063C-EN 13

Table 1. Unit Dimensions (continued)

Tons

RefrigerationSystem




H(in) W (in)

Type Digit9

Type Digit2

Type Digit18


75

Standard 1

No Heat A


81.59 116.13






EFX






HighEfficiency 2

No Heat A







EFX






eFlex™ 3

No Heat A







EFX





Cartridge E,H 360.86 360.86Notes:

1. Difference between overall length and footprint length is outside air hood.2. Refrigeration System Performance impacts length in 70 and 75 ton due to staggered coil configuration


14 RT-SVX063C-EN

Figure 1. 20 to 30 ton — front view (inches)

40.28

90.63

27.31

FRONT VIEW20-30T


RT-SVX063C-EN 15

Figure 2. 20 to 30 ton — left view of sample configuration (inches)

87.66

40.61

69.3381.59

38.85

213.00

220.88

LEFT SIDE VIEW20-30T / NO HEAT / RELIEF FANS / PANEL FILTERS


16 RT-SVX063C-EN


27.31

40.28

90.63

FRONT VIEW40-55T


RT-SVX063C-EN 17


79.33 81.59 87.66

300.88

LEFT SIDE VIEW40-55T / ELECT. HT. / CART. FILTERS


27.3240.38

116.13

FRONT VIEW60-75T


18 RT-SVX063C-EN


79.71

281.88

81.59 87.90

4.52 23.29

41.27

38.63

320.73

LEFT SIDE VIEW60-75T / GAS HEAT / BAROMETRIC RELIEF / PANEL FILTERS

Roof CurbFigure 7. Service clearance

96"96"

72"96"


RT-SVX063C-EN 19

Figure 8. Roof curb dimensions (inches)

18.00

C

EOPENING

ATOP OF CURB

B

M

KOPENING

16.60

R

1.33

7.00

7.50

S

N

G4.01

4.01

FRETURN OPENING

LSUPPLY OPENING

V

UBOTTOM OF CURB


20 RT-SVX063C-EN

Table 2. Roof curb dimensional data (inches)

Description A B C E F G K L M N R S U VRX, 20-30 T, PANELFILTER, RELFAN 200.97 84.50 33.05 26.13 76.49 3.60 27.00 67.50 111.19 18.97 95.94 94.50 201.29 84.82

RX, 20-30 T, CARTFILTER 188.99 84.50 3.58 24.62 76.49 3.60 27.00 67.50 130.19 18.97 95.94 94.50 189.31 84.82

RX, 20-30 T, CARTFILTER, RELFAN 219.97 84.50 33.05 26.13 76.49 3.60 27.00 67.50 130.19 18.97 95.94 94.50 220.29 84.82

RA, 20-30 T, PANELFILTER 120.26 84.50 3.58 24.62 76.49 23.85 28.50 76.49 39.72 18.97 95.94 94.50 120.58 84.82

RA, 20-30 T, PANELFILTER, RELFAN 151.25 84.50 33.05 26.13 76.49 23.85 28.50 76.49 39.72 18.97 95.94 94.50 151.57 84.82

RA, 20-30 T, CARTFILTER 139.26 84.50 3.58 24.62 76.49 23.85 28.50 76.49 58.72 18.97 95.94 94.50 139.58 84.82

RA, 20-30 T, CARTFILTER, RELFAN 170.25 84.50 33.05 26.13 76.49 23.85 28.50 76.49 58.72 18.97 95.94 94.50 170.57 84.82

RX, 40-55 T, PANELFILTER 179.99 84.50 3.58 32.12 76.49 3.60 29.50 67.50 111.19 59.12 95.94 94.50 180.31 84.82

RX, 40-55 T, PANELFILTER, RELFAN 210.97 84.50 33.05 33.63 76.49 3.60 29.50 67.50 111.19 59.12 95.94 94.50 211.29 84.82

RX, 40-55 T, CARTFILTER 198.99 84.50 3.58 32.12 76.49 3.60 29.50 67.50 130.19 59.12 95.94 94.50 199.31 84.82


RA, 40-55 T, PANELFILTER 127.76 84.50 3.58 32.12 76.49 23.85 28.50 76.49 39.72 59.12 95.94 94.50 128.08 84.82


RA, 40-55 T, CARTFILTER 146.76 84.50 3.58 32.12 76.49 23.85 28.50 76.49 58.72 59.12 95.94 94.50 147.08 84.82


RX, 60-75 T, PANELFILTER 179.99 110.00 3.58 32.12 101.99 3.60 29.50 93.00 111.19 59.12 121.44 120.00 180.31 110.32

RX, 60-75 T, PANELFILTER, RELFAN 216.48 110.00 38.56 33.63 101.99 3.60 29.50 93.00 111.19 59.12 121.44 120.00 216.80 110.32

RX, 60-75 T, CARTFILTER 198.99 110.00 3.58 32.12 101.99 3.60 29.50 93.00 130.19 59.12 121.44 120.00 199.31 110.32


RA, 60-75 T, PANELFILTER 127.76 110.00 3.58 32.12 101.99 22.85 29.50 101.99 39.72 59.12 121.44 120.00 128.08 110.32


RA, 60-75 T, CARTFILTER 146.76 110.00 3.58 32.12 101.99 22.85 29.50 101.99 58.72 59.12 121.44 120.00 147.08 110.32


RX, 60-75 T, PANELFILTER, STGEV 227.99 110.00 3.58 32.12 101.99 3.60 29.50 93.00 159.19 59.12 121.44 120.00 228.31 110.32

RX, 60-75 T, PANELFILTER, RELFAN,

STGEV264.48 110.00 38.56 33.63 101.99 3.60 29.50 93.00 159.19 59.12 121.44 120.00 264.80 110.32

RX, 60-75 T, CARTFILTER, STGEV 258.99 110.00 3.58 32.12 101.99 3.60 29.50 93.00 190.19 59.12 121.44 120.00 259.31 110.32

RX, 60-75 T, CARTFILTER, RELFAN,

STGEV295.48 110.00 38.56 33.63 101.99 3.60 29.50 93.00 190.19 59.12 121.44 120.00 295.80 110.32

RA, 60-75 T, PANELFILTER, STGEV 175.76 110.00 3.58 32.12 101.99 22.85 29.50 101.99 87.72 59.12 121.44 120.00 176.08 110.32

RA, 60-75 T, PANELFILTER, RELFAN,

STGEV212.25 110.00 38.56 33.63 101.99 22.85 29.50 101.99 87.72 59.12 121.44 120.00 212.57 110.32

RA, 60-75 T, CARTFILTER, STGEV 206.76 110.00 3.58 32.12 101.99 22.85 29.50 101.99 118.72 59.12 121.44 120.00 207.08 110.32

RA, 60-75 T, CARTFILTER, RELFAN,

STGEV243.25 110.00 38.56 33.63 101.99 22.85 29.50 101.99 118.72 59.12 121.44 120.00 243.57 110.32

Note: High efficiency and eFlexTM refrigeration system performance for both 70 and 75 tons have a staggered evaporator coil (STGEV).


RT-SVX063C-EN 21

Figure 9. Base and pedestal

B

B

A A

C C

2.8"

2.5"

4.3"

2.7"

.5"

5.5"

4.3"

3.4"

1.5"

7.5"

3.0"

3.5"

5.5"

1.5"

1.5"

3.4"

1.5"

PLAN VIEW

BASE

TYPICAL PEDESTAL & BASE DETAILSECT. B-B

2 x 4 NAILER

PEDESTAL

BASE

(SIDE VIEW OF PEDESTAL)

TYPICAL ROOF CURB & BASE DETAILSECT. A-A

2 X 4 NAILER

GASKET

BASE

ROOF CURB

TYPICAL PEDESTAL & BASE DETAILSECT. C-C

2 X 4 NAILER

2 X 4NAILER

PEDESTAL

LIFTING LUG

GASKET

2 X 4 NAILER

(END VIEW OF PEDESTAL)


22 RT-SVX063C-EN

Electrical Entry DetailsFigure 10. Electrical connections (inches)


RT-SVX063C-EN 23

Access ClearancesFigure 11. Minimum access clearances – 20 to 30 ton

OUTSIDE AIRCONTROL BOX ELECTRIC HEAT

CONTROL BOX

RE

LIE

F F

AN

S

HO

OD

EC

ON

OM

IZE

R

PR

E-F

ILT

ER

EV

AP

OR

AT

OR

CO

IL

ELE

CT

RIC

HE

AT

CO

NT

RO

L B

OX

SUPPLY FAN

SUPPLY FAN

CB VFD CB PB

18"

19.5

"

25.5 20

"

25.5

"

18.5

"

20.5"

26.5"

32"

PLAN VIEW20-30T DOOR LAYOUT

SUPPLY FANCONTROL BOX

POWERBOX

20"

Figure 12. Minimum access clearances – 40 to 55 ton

OUTSIDE AIRCONTROL BOX


GAS HEATCONTROL BOX

RE

LIE

F F

AN

S

HO

OD

EC

ON

OM

IZE

R

PR

E-F

ILT

ER

EV

AP

OR

AT

OR

CO

IL

GA

S H

EA

T

CO

NT

RO

L B

OXSUPPLY FAN

SUPPLY FAN

CB VFD CB PB

25.5

"

19.5

"

25.5

"

20"

25.5

"

16.5

"

20.5"

26.5"

32"


POWER BOX


24 RT-SVX063C-EN

Figure 13. Minimum access clearances – 60 to 75 ton

OUTSIDE AIRCONTROL BOX

RE

LIE

F F

AN

S

HO

OD

EC

ON

OM

IZE

R

PR

E-F

ILT

ER

EV

AP

OR

AT

OR

CO

IL

FIN

AL

FIL

TE

R

CO

NT

RO

L B

OX

SUPPLY FAN

SUPPLY FAN

CB VFD PB



POWER BOX

19.5

"

25.5

"

20"

25.5

"

20.5"

26.5"

32"

25.5

"


RT-SVX063C-EN 25

InstallationRoof Curb and DuctworkThe roof curbs consist of two main components: apedestal to support the unit condenser section and a“full perimeter” enclosure to support the unit’s airhandler section.

Before installing any roof curb, verify the following:

• It is the correct curb for the unit.

• It includes the necessary gaskets and hardware.

• The purposed installation location provides therequired clearance for proper operation.

• The curb is level and square — the top surface ofthe curb must be true to assure an adequate curb-to-unit seal.

Step-by-step curb assembly and installationinstructions ship with each Trane accessory roof curbkit. Follow the instructions carefully to assure properfit-up when the unit is set into place.

NNoottee:: To assure proper condensate flow duringoperation, the unit (and curb) must be as level aspossible. The maximum slope allowable forrooftop unit applications is 4" end-to-end and 2"side-to-side.

If the unit is elevated, a field constructed catwalkaround the unit is strongly recommended to provideeasy access for unit maintenance and service.Recommendations for installing the Supply Air andReturn Air ductwork joining the roof curb are includedin the curb instruction booklet. Curb ductwork must befabricated and installed by the installing contractorbefore the unit is set into place.

NNoottee:: For sound consideration, cut only the holes in theroof deck for the ductwork penetrations. Do notcut out the entire roof deck within the curbperimeter.

Unit Rigging and Placement

WWAARRNNIINNGGHHeeaavvyy OObbjjeecctt!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnuunniitt ddrrooppppiinngg wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorrsseerriioouuss iinnjjuurryy,, aanndd eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyyddaammaaggee..EEnnssuurree tthhaatt aallll tthhee lliiffttiinngg eeqquuiippmmeenntt uusseedd iisspprrooppeerrllyy rraatteedd ffoorr tthhee wweeiigghhtt ooff tthhee uunniitt bbeeiinngglliifftteedd.. EEaacchh ooff tthhee ccaabblleess ((cchhaaiinnss oorr sslliinnggss)),, hhooookkss,,aanndd sshhaacckklleess uusseedd ttoo lliifftt tthhee uunniitt mmuusstt bbee ccaappaabblleeooff ssuuppppoorrttiinngg tthhee eennttiirree wweeiigghhtt ooff tthhee uunniitt.. LLiiffttiinnggccaabblleess ((cchhaaiinnss oorr sslliinnggss)) mmaayy nnoott bbee ooff tthhee ssaammeelleennggtthh.. AAddjjuusstt aass nneecceessssaarryy ffoorr eevveenn uunniitt lliifftt..

1. To configure the unit Center-of-Gravity, utilizeTOPSS or contact the local Trane sales office.

2. Test lift the unit to ensure it is properly rigged andbalanced, make any necessary rigging adjustments.For 10 foot wide units, remove all shippingsupports prior to setting unit on roof curb. Failure todo so will result in roof curb and/or unit damage.

3. Align the base rail of the unit air handler sectionwith the curb rail while lowering the unit onto thecurb. Make sure that the gasket on the curb is notdamaged while positioning the unit. (The pedestalsimply supports the unit condenser section)

A cross section of the juncture between the unit andthe roof curb is shown below.

Figure 14. Typical unit base and roof curb crosssection

16.60

14.43

SHIPS WITH CURB -FIELD INSTALLED GASKET,2 x 4 NAILER

LIFTING LUGS/UNIT BASE

0.50

ROOF CURB

1.40

18.00

26 RT-SVX063C-EN

Figure 15. Lug locations

AB

C

Cabi-net Tonnage

RA/RX

Cartridge Filter Efficiency A B C

A 20, 25, 30

RAYes All 36 NA 161

No All 36 NA 142

RXYes All 36 NA 211

No All 36 NA 192

B 40,50,55

RAYes All 36 NA 202

No All 36 NA 183

RXYes All 36 165 254

No All 36 165 235

C 60

RAYes All 36 111 202

No All 36 111 183

RXYes All 36 165 254

No All 36 165 235

C 70,75

RA

Yes High/Eflex 36 165 262

Yes Std 36 111 202

No High/Eflex 36 165 231

No Std 36 111 183

RX

Yes High/Eflex 36 165 314

Yes Std 36 165 254

No High/Eflex 36 165 283

No Std 36 165 235

IInnssttaallllaattiioonn

RT-SVX063C-EN 27

General InstallationRequirementsThe checklist below is a summary of the steps requiredto successfully install a Commercial rooftop unit. Thischecklist is intended to acquaint the installingpersonnel with what is required in the installationprocess. It does not replace the detailed instructionscalled out in the applicable sections of this manual.

☐ Complete “Unit Inspection,” p. 9 checklist.

☐ Verify that the installation location of the unit willprovide the required clearance for properoperation.

☐ Assemble and install the roof curb. Refer to thecurrent edition of the roof curb installer’s guide.

☐ Fabricate and install ductwork; secure ductwork tocurb. Do not use the unit to support the weight ofthe ducting.

☐ Install pitch pocket for power supply throughbuilding roof. (If applicable).

Setting the Unit☐ Set the unit onto the curb; check for levelness.

☐ Ensure unit-to-curb seal is tight and without bucklesor cracks.

☐ Install and connect condensate drain lines to eachevaporator drain connection.

☐ Remove the shipping hold-down bolts from thesupply fans.

☐ Check all supply fan spring isolators for properadjustment.

☐ Verify all discharge line service valves (one percircuit) are back seated.

☐ Energize compressor crankcase heaters. Allowheaters to operate for 8 hours prior to starting therefrigeration system.

Main Electrical Power☐ Verify that the power supply complies with the unit

nameplate specifications. Refer to Main Unit PowerWiring in the Installation chapter.

☐ Inspect all control panel components; tighten anyloose connections.

☐ Connect properly sized and protected power supplywiring to a field-supplied/installed disconnect andunit

☐ Properly ground the unit.

☐ All field-installed wiring must comply with NEC andapplicable local codes.

Field Installed Control Wiring☐ Complete the field wiring connections for the

constant volume controls as applicable.

☐ Complete the field wiring connections for thevariable air volume controls as applicable.

NNoottee:: All field-installed wiring must comply with NECand applicable local codes.

Electric Heat☐ Verify that the power supply complies with the

electric heater specifications on the unit and heaternameplate.

☐ Inspect the heater terminal plate and control panel;tighten any loose connections.

☐ Check electric heat circuits for continuity.

Units with 200V or 230V Electric HeatRequires separate power supply to heater.

☐ Connect properly sized and protected power supplywiring for the electric heat control box from adedicated, field supplied/installed disconnect toterminal block, or to an optional unit-mounteddisconnect switch.

☐ Ensure the disconnect cover is reinstalled afterconnections are made.

Gas Heat☐ Gas supply line properly sized and connected to the

unit gas train.

☐ All gas piping joints properly sealed.

☐ Drip leg installed in the gas piping near the unit.

☐ Gas piping leak checked with a soap solution. Ifpiping connections to the unit are complete, do notpressurize piping in excess of 0.50 psig or 14 inchesw.c. to prevent component failure.

☐ Main supply gas pressure adequate.

☐ Flue and Burner Tubes are clear of anyobstructions.

☐ Factory supplied rain shield installed overcombustion air inlet panel (40-75T units only).

☐ LP (Propane) kit parts or high altitude orificesinstalled (if required).

☐ Factory-supplied flue assembly installed on theunit.

☐ Connect the 3/4" CPVC furnace drain stubout to aproper condensate drain. Provide heat tape orinsulation for condensate drain as needed.

O/A Pressure Sensor and TubingInstallation (All )☐ Factory supplied pneumatic tubing installed

between the O/A pressure sensor and the connectoron the the outside air intake hood..

☐ (Units with StatiTrac) Field supplied pneumatictubing connected to the proper fitting in the main


28 RT-SVX063C-EN

control box, and the other end routed to a suitablesensing location within the controlled space.

Voltage SupplyElectrical power to the unit must meet stringentrequirements for the unit to operate properly. Measureeach leg (phase-to-phase) of the power supply. Eachreading must fall within the utilization range stampedon the unit nameplate. If any of the readings do not fallwithin the proper tolerances, notify the powercompany to correct this situation before operating theunit.

WWAARRNNIINNGGLLiivvee EElleeccttrriiccaall CCoommppoonneennttss!!FFaaiilluurree ttoo ffoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnsswwhheenn eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..WWhheenn iitt iiss nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaallccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd eelleeccttrriicciiaannoorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn pprrooppeerrllyy ttrraaiinneeddiinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss ppeerrffoorrmmtthheessee ttaasskkss..

Voltage ImbalanceExcessive three phase voltage imbalance betweenphases will cause motors to overheat and eventuallyfail. The maximum allowable voltage imbalance is 2%.Measure and record the voltage between phases 1, 2,and 3 and calculate the amount of imbalance asfollows:

% Voltage Imbalance =

where;

AV (Average Voltage) =

V1, V2, V3 = Line Voltage Readings

VD = Line Voltage reading that deviates the farthestfrom the average voltage.

EExxaammppllee:: If the voltage readings of the supply powermeasured 221, 230, and 227, the average volts wouldbe:

VD (reading farthest from average) = 221

The percentage of Imbalance equals:

The 2.2% imbalance in this example exceeds themaximum allowable imbalance of 2.0%. This muchimbalance between phases can equal as much as a20% current imbalance with a resulting increase inmotor winding temperatures that will decrease motorlife. If the voltage imbalance is over 2%, notify theproper agencies to correct the voltage problem beforeoperating this equipment.


RT-SVX063C-EN 29

Electrical DataElectrical Service SizingTo correctly size electrical service wiring for a unit, findthe appropriate calculations listed below. Each type ofunit has its own set of calculations for MCA (MinimumCircuit Ampacity) and MOP (Maximum OvercurrentProtection). Read the load definitions that follow andthen find the appropriate set of calculations based onunit type.

NNoottee:: Set 1 is for cooling only and cooling with gasheat units, and set 2 is for cooling with electricheat units.

Load Definitions: (To determine load values, see theElectrical Service Sizing Data Tables on the followingpage.)

Load Definitions

LOAD 1Current of the largest motor (compressor or fanmotor)

LOAD 2 Sum of the currents of all remaining motors

LOAD 3 Current of electric heaters

LOAD 4 Any other load rated at 1 amp or more

Set 1: Cooling Only Rooftop Units andCooling with Gas Heat Rooftop UnitsMCA = (1.25 x LOAD1) + LOAD2 + LOAD4

MOP = (2.25 x LOAD1) + LOAD2 + LOAD4

Select a fuse rating equal to the MOP value. If the MOPvalue does not equal a standard fuse size as listed inNEC 240-6, select the next lower standard fuse rating.

NNoottee:: If selected MOP is less than the MCA, then selectthe lowest standard maximum fuse size which isequal to or larger than the MCA, provided theselected fuse size does not exceed 800 amps.

Set 2: Rooftop units with Electric HeatSSiinnggllee SSoouurrccee PPoowweerr uunniittss ((446600VV aanndd 557755VV))

To arrive at the correct MCA and MOP values for theseunits, two sets of calculations must be performed. Firstcalculate the MCA and MOP values as if the unit was incooling mode (use the equations given in Set 1). Thencalculate the MCA and MOP values as if the unit werein heating mode as follows. (Keep in mind whendetermining LOADS that the compressors andcondenser fan motors don't run while the unit is inheating mode).

For units using heaters less than 50 kW:

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4) + (1.25 xLOAD3)

For units using heaters equal to or greater than 50 kW:

MCA = 1.25 x (LOAD1 + LOAD2 + LOAD4) + (1.0 xLOAD3)

The nameplate MCA value will be the larger of thecooling mode MCA value or the heating mode MCAvalue calculated above.

MOP = (2.25 x LOAD1) + LOAD2 + LOAD3 + LOAD4

The selection MOP value will be the larger of thecooling mode MOP value or the heating mode MOPvalue calculated above.

Select a fuse rating equal to the MOP value. If the MOPvalue does not equal a standard fuse size as listed inNEC 240-6, select the next lower standard fuse rating. Ifthe selected MOP value is less than 125 percent of thecurrent rating of the electric heat load, select the nexthigher standard fuse rating.

NNoottee:: If selected MOP is less than the MCA, then selectthe lowest standard maximum fuse size which isequal to or larger than the MCA, provided theselected fuse size does not exceed 800 amps.

DDuuaall SSoouurrccee PPoowweerr uunniittss ((220000VV aanndd 223300VV))

These units will have two circuit values shown on thenameplate. The first circuit value will be therefrigeration (cooling mode) values calculated per Set1. The second set of circuit values shown on thenameplate will be for the electric heating circuit asfollows.

For units using heaters less than 50 kW:

MCA = (1.25 x LOAD3)

For units using heaters equal to or greater than 50 kW:

MCA = (1.0 x LOAD3)

MOP = (1.25 x LOAD3)

Select a fuse rating for the electric heating circuit that isequal to the MOP value obtained in the equation above.If the MOP value does not equal a standard fuse size aslisted in NEC 240-6, select the next lower standard fuserating (see note below for exception). If the selectedMOP value is less than 125 percent of the current ratingof the electric heat load, select the next higher standardfuse rating.

NNoottee:: If the available MOP option is less than the MCAobtained in the equation above, then reselect thelowest standard maximum fuse size which isequal to, or larger, than the MCA, provided thereselected fuse size does not exceed 800 amps.


30 RT-SVX063C-EN

Service Sizing Data

Table 3. Compressor electrical service sizing data (20 to 75 ton)

TonsNo. of

Compressors

200 V 230 V 460 V 575 V

RLA (ea.) LRA (ea.) RLA (ea.) LRA (ea.) RLA (ea.) LRA (ea.) RLA (ea.) LRA (ea.)

20 Std1 19.1 180.0 19.1 180.0 9.2 75.0 7.3 60.02 28.4 208.0 28.4 208.0 11.9 98.0 9.9 75.0

20 Hi Eff1 40.3 267.0 40.3 267.0 19.1 142.0 15.8 103.01 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.0

20 Vari Spd1(a) 38.7 NA 33.5 NA 17.5 NA 15.4 NA1 35.5 267.0 30.8 267.0 15.3 142.0 15.2 103.0

25 Std1 27.7 203.0 27.0 203.0 14.5 98.0 12.5 84.02 35.5 267.0 30.8 267.0 15.3 142.0 15.2 103.0

25 Hi Eff1 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.01 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.0


30 Std1 27.7 203.0 27.0 203.0 14.5 98.0 12.5 84.02 40.3 267.0 40.3 267.0 19.1 142.0 15.8 103.0

30 Hi Eff1 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.01 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.0


40 Std 4 35.5 267.0 30.8 267.0 15.3 142.0 15.2 103.040 Hi Eff 4 35.5 267.0 30.8 267.0 15.3 142.0 15.2 103.0


50 Std2 40.3 267.0 40.3 267.0 19.1 142.0 15.8 103.02 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.0

50 Hi Eff2 40.3 267.0 40.3 267.0 19.1 142.0 15.8 103.02 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.0


55 Std 4 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.0

55 Hi Eff2 40.3 267.0 40.3 267.0 19.1 142.0 15.8 103.02 45.6 304.0 42.3 304.0 19.8 147.0 17.2 122.0


60 Std2 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.02 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.0

60 Hi Eff 4 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.0


70 Std 4 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.0

70 Hi Eff2 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.02 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.0


75 Std 4 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.075 Hi Eff 4 60.5 345.0 52.4 345.0 26.2 155.0 23.1 126.0

75 Vari Spd1(a) 74.8 NA 63.6 NA 32.5 NA 27.3 NA1 60.1 320.0 51.5 320.0 26.0 160.0 21.9 135.02 51.4 315.0 45.6 315.0 22.7 158.0 19.1 136.0

(a) Variable Speed Compressor


RT-SVX063C-EN 31

Table 4. Condenser fan electrical service sizing data (20-75 ton)

Tonnage No. ofMotors

200 V 230 V 460 V 575 VFLA (ea.) FLA (ea.) FLA (ea.) FLA (ea.)

20 Std 2 5.4 5.4 2.7 2.2

20 Low Ambient1(a) 5.6 5.6 2.9 2.41 5.4 5.4 2.7 2.2

25 Std 2 5.4 5.4 2.7 2.2

25 Low Ambient1(a) 5.6 5.6 2.9 2.41 5.4 5.4 2.7 2.2

30 Std 2 5.4 5.4 2.7 2.2

30 Low Ambient1(a) 5.6 5.6 2.9 2.41 5.4 5.4 2.7 2.2

40 Std 4 5.4 5.4 2.7 2.2

40 Low Ambient2(a) 5.6 5.6 2.9 2.42 5.4 5.4 2.7 2.2

50 Std 4 5.4 5.4 2.7 2.2

50 Low Ambient2(a) 5.6 5.6 2.9 2.42 5.4 5.4 2.7 2.2

55 Std 4 5.4 5.4 2.7 2.2

55 Low Ambient2(a) 5.6 5.6 2.9 2.42 5.4 5.4 2.7 2.2

60 Std 6 4.1 4.1 1.8 1.4

60 Low Ambient2(a) 5.6 5.6 2.9 2.44 4.1 4.1 1.8 1.4

70 Std 6 4.1 4.1 1.8 1.4

70 Low Ambient2(a) 5.6 5.6 2.9 2.44 4.1 4.1 1.8 1.4

75 Std 6 4.1 4.1 1.8 1.4

75 Low Ambient2(a) 5.6 5.6 2.9 2.44 4.1 4.1 1.8 1.4

(a) Variable Speed Fan

Table 5. Electrical service sizing data —electric heat module (electric heat units only) — 20 to 75 tons

ModulekW

Voltage (Amps)200 V 230 V 460 V 575 V

30 62.5 72.2 36.1 28.960 124.9 144.3 72.2 57.790 187.4 216.5 108.3 86.6120 233.2 269.4 144.3 115.5150 NA NA 180.4 144.3190 NA NA 224.9 182.8

Note: Electric heat FLA are determined at 208, 240, 480 and 600volts.


32 RT-SVX063C-EN

Table 6. Electrical service sizing data — Supply fan motors — 20 to 75 tons

200 V 230 V 460 V 575 VFLA (ea.) FLA (ea.) FLA (ea.) FLA (ea.)

Motor Horsepower Supply Fan Motor (4 pole) with VFD Bypass1.5 5.6 5.6 3.5 3.73 14.1 14.1 4.7 3.75 21.0 14.1 8.3 5.37.5 41.0 21.0 11.2 8.710 41.0 41.0 15.1 11.915 41.0 41.0 22.1 16.520 56.1 52.7 29.9 22.525 70.1 65.0 32.2 27.0

Motor Horsepower Supply Fan Motor (6 pole) with VFD Bypass1.5 6.1 5.6 3.5 3.73 14.1 14.1 4.7 3.75 21.0 14.8 8.3 5.67.5 41.0 22.0 11.2 11.910 41.0 41.0 22.1 16.515 52.7 41.0 22.1 16.520 65.0 54.0 29.9 27.0

Motor Horsepower Supply Fan Motor (4 pole) with out VFD Bypass1.5 5.6 5.6 3.5 3.73 14.1 14.1 4.7 3.75 21.0 14.1 8.3 5.07.5 41.0 21.0 11.2 8.710 41.0 41.0 15.1 11.915 52.7 41.0 22.1 16.520 52.7 52.7 29.9 22.525 65.0 65.0 35.2 27.0

Motor Horsepower Supply Fan Motor (6 pole) with out VFD Bypass1.5 5.6 5.6 3.5 3.73 14.1 14.1 4.7 3.75 21.0 14.1 8.3 5.07.5 41.0 21.0 11.2 11.910 41.0 41.0 22.1 16.515 52.7 41.0 22.1 16.520 52.7 52.7 29.9 27.0

Notes:1. FLA is for individual motors by HP, not total unit supply and relief fan HP2. Supply fans selected under 1,600 RPM will have 6-pole motors

Table 7. Electrical service sizing data — Relief fan motors — 20 to 75 tons

Tonnage HP (Total) No. of Motors200 V 230 V 460 V 575 V

FLA (ea.) FLA (ea.) FLA (ea.) FLA (ea.)20 6 1 12.8 12.8 6.3 N/A20 8(a) 1 19.5 19.5 9.0 N/A25 6 1 12.8 12.8 6.3 N/A25 8(b) 1 18.2 18.2 9.3 N/A30 8(b) 1 18.2 18.2 9.3 N/A30 12 2 12.8 12.8 6.3 N/A40 8(b) 1 18.2 18.2 9.3 N/A40 15(a) 2 19.5 19.5 9.0 N/A50 12 2 12.8 12.8 6.3 N/A50 16(b) 2 18.2 18.2 9.3 N/A55 12 2 12.8 12.8 6.3 N/A55 16(b) 2 18.2 18.2 9.3 N/A60 16(b) 2 18.2 18.2 9.3 N/A60 23(a) 3 19.5 19.5 9.0 N/A70 16(b) 2 18.2 18.2 9.3 N/A70 23(a) 3 19.5 19.5 9.0 N/A75 16(b) 2 18.2 18.2 9.3 N/A75 23(a) 3 19.5 19.5 9.0 N/A

(a) 23" fan diameter(b) 25.5" fan diameter


RT-SVX063C-EN 33

Table 8. Electrical service sizing data (amps) - control power transformer heating and cooling modes - 20 to 75 tons

Nom Tons Digit 2 UnitFunction

Voltage

200 230 460 575

FLA FLA FLA FLA

All All 10 10 4.5 3.5

Table 9. Voltage utilization range

Unit Voltage Voltage Utilization Range

200/60/3 180-220

230/60/3 207-253

460/60/3 414-506

575/60/3 (WYE) 517-633


34 RT-SVX063C-EN

Main Unit Power WiringThe electrical service must be protected from overcurrent and short circuit conditions in accordance withNEC requirements. Protection devices must be sizedaccording to the electrical data on the nameplate. Referto the equations listed in the product catalog todetermine the following:

• the appropriate electrical service wire size based on“Minimum Circuit Ampacity” (MCA)

• the “Maximum Over Current Protection” (MOP)device

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The location of the electrical service entrance isillustrated in Figure 16, p. 34. It’s important to completethe unit power wiring connections onto either the mainterminal block or the factory mounted, non-fuseddisconnect switch. The disconnect switch is inside theunit power box. Refer to the component locationdiagrams that shipped with the unit for specifictermination points.

Provide proper grounding for the unit in accordancewith local and national codes.

Figure 16. Typical field power wiring (20 to 75 ton)

3-WIRE POWER SUPPLYPLUS GROUND

3-WIRE POWER SUPPLYPLUS GROUND

PITCHPOCKET

PITCHPOCKET

FIELD SUPPLIED DISCONNECT SWITCH

RE 200/230 ONLY: ADDITIONAL FIELD SUPPLIED DISCONNECT SWITCH


RT-SVX063C-EN 35

Supply FansRemove Shipping Tie DownRemove supply fan shipping tie down hardware. Thereare four places on each fan where hardware needs to

be removed, shown in Figure 17, p. 35. Gently spineach fan to verify there is no wheel-to-coneinterference. If adjustment is required, loosen fan shaftset screw and reposition fan to get correct wheel/coneoverlap.

Figure 17. Remove shipping tie-downs

Tiedown

Tiedown

Clearance

Clearance

Figure 18. Shipping tie-down

IImmppoorrttaanntt:: Do NOT remove electrical ground wirestrap.

Table 10. Supply fan cone overlap measurements

Fan Size ConeWidth G (in) Overlap Q (in)

165 5.18 0.18

182 6.44 0.38

Table 10. Supply fan cone overlap measurements(continued)

Fan Size ConeWidth G (in) Overlap Q (in)

200 7.05 0.41

222 7.83 0.45

245 8.62 0.50

270 9.45 0.55


36 RT-SVX063C-EN

Figure 19. Supply fan cone overlap

Q

G

WHEEL INLET CONE

O/A Sensor and Tubing InstallationAn Outside Air Pressure Sensor is shipped with allunits designed to operate on variable air volumeapplications or constant volume units with modulatingrelief with Statitrac.

On VAV systems, a duct pressure transducer and theoutside air sensor is used to control the discharge ductstatic pressure to within a customer-specified range.On CV and VAV units equipped with modulating reliefwith Statitrac, a space pressure transducer and theoutside air sensor is used to control the relief fan anddampers to relieve static pressure to within acustomer-specified range, within the controlled space.

Use the following steps and image to install the sensorand the pneumatic tubing.

1. Remove the O/A pressure sensor kit located insidethe main control box. The kit contains the followingitems:

a. O/A static pressure sensor with slottedmounting bracket

b. 50 ft. tubing

c. Mounting hardware

2. Install the O/A static pressure sensor horizontally tothe roof rail at the return end of the unit.

3. Remove the dust cap from the tubing connectorlocated below the sensor in the vertical support.

4. Attach one end of the 3/16" O.D. factory-providedpneumatic tubing to the sensor's top port. Attachthe other end of the tubing to the connector in the

side of the O/A intake hood (for units without O/Aintake, attach to panel at the return end of the unit).

NNoottee:: Use only what is required and discard excesstubing.

Units with Statitrac1. Open the control panel, and locate the Space

Pressure tubing connector.

2. Connect one end of the field provided 1/4" (length50-100 ft.) or 3/8" (length greater than 100 ft.) O.D.pneumatic tubing for the space pressurizationcontrol to the fitting.

3. Route the opposite end of the tubing to a suitablelocation inside the building. This location should bethe largest open area that will not be affected bysudden static pressure changes.

Figure 20. Pressure sensing tube location

Space Pressure Tube Fitting


RT-SVX063C-EN 37

Figure 21. Pressure sensingTop Port Connection

Outside AirPressure Sensor

2' x 3/16" OD TubingFactory ProvidedPneumatic Tubing(Field Installed)

Sensor MountingBracket Attached to Roof

Tubing Connector(In vertical support)

To CalibrationSolenoid

Return PlenumTransducer

LO

C

C

CalibrationSolenoid

Sensing Tube toSpace SensingLocation

Sensing Tube toOutside Air Reference

Sensing Tube to Discharge Static

Pressure Sensing Location

NO

NO

NC

NC

HI LO HI

Sensing Tubeto ReturnPlenum

Space StaticTransducer

Duct StaticTransducer

LO HI

Duct, space, and return plenum pressure transducer tubing schematic

Refrigeration SystemCondensate Drain ConnectionsAll condensate drain connections must be connected tothe evaporator drain connections.

A condensate trap must be installed due to the drainconnection being on the “negative pressure” side ofthe fan. Install the P-Traps at the unit using theguidelines in Figure 22, p. 37.

Figure 22. Condensate trap installation

Post

4.5”

2.25”CleanoutPlug

Field SuppliedCondensate Piping

1.25” NPT Female Connection

Pitch the drain lines at least 1/2 inch for every 10 feet ofhorizontal run to assure proper condensate flow. Donot allow the horizontal run to sag causing a possibledouble-trap condition which could result in condensatebackup due to “air lock”.

Figure 23. Condensate drain locations for units withstacked indoor coils


38 RT-SVX063C-EN

Figure 24. Condensate drain locations for units withstaggered indoor coils

Compressor Crankcase Heaters

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Each scroll compressor is equipped with a crankcaseheater.

The proper operation of the crankcase heater isimportant to maintain an elevated compressor oiltemperature during the OFF cycle to reduce oil foamingduring compressor starts. When the compressor starts,the sudden reduction in crankcase pressure causes theliquid refrigerant to boil rapidly causing the oil to foam.This condition could damage compressor bearings dueto reduced lubrication and could cause compressormechanical failures.

Gas Heat UnitsAll internal gas piping is factory-installed and pressureleak-tested before shipment. Once the unit is set intoplace, the gas supply line must be field-connected tothe elbow located inside the gas heat controlcompartments.

NNoottee:: For conversion from Natural Gas to Propanerefer to the LP Converstion Kit (RT-SVN033*-EN)for part numbers and installation instructions.

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Access holes are provided on the unit to accommodatea side or bottom pipe entry.

IImmppoorrttaanntt:: If bottom pipe entry is used, ensure theopening in the base pan is sealed fromwater intrusion into the inside of the roofcurb.

Figure 25. Bottom pipe entry


RT-SVX063C-EN 39

Following the guidelines listed below will enhance boththe installation and operation of the furnace.

NNoottee:: In the absence of local codes, the installationmust conform with the American NationalStandard Z223-1a of the National Fuel Gas Code,(latest edition).

1. To assure sufficient gas pressure at the unit, use , p.40 as a guide to determine the appropriate gas pipesize for the unit heating capacity listed on the unitnameplate.

NNoottee:: Supply line size should not be sized smallerthan the factory piping connection elbow size.

2. If a gas line already exists, verify that it is sizedlarge enough to handle the additional furnacecapacity before connecting to it.

3. Take all branch piping from any main gas line fromthe top at 90 degrees or at 45 degrees to preventmoisture from being drawn in with the gas.

4. Ensure that all piping connections are adequatelycoated with joint sealant and properly tightened.Use a piping compound that is resistant to liquidpetroleum gases.

5. Provide a drip leg near the unit.

6. Install a pressure regulator at the unit that isadequate to maintain 7" w.c. for natural gas (or 11"w.c. for propane) while the furnace is operating atfull capacity.

IImmppoorrttaanntt:: Gas pressure in excess of 14" w.c. or 0.5psig will damage the gas train.

NNOOTTIICCEEGGaass VVaallvvee DDaammaaggee!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnggaass vvaallvvee ddaammaaggee ffrroomm iinnccoorrrreecctt ggaass pprreessssuurreess,,iirrrreegguullaarr ppuullssaattiinngg ffllaammee ppaatttteerrnnss,, bbuurrnneerr rruummbbllee,,aanndd ppootteennttiiaall ffllaammee oouuttaaggeess..UUssee aa pprreessssuurree rreegguullaattoorr ttoo pprrooppeerrllyy rreegguullaattee ggaasspprreessssuurree.. DDOO NNOOTT oovveerrssiizzee tthhee rreegguullaattoorr..

Failure to use a pressure regulating device willresult in incorrect gas pressure, which can causeerratic operation due to gas pressure fluctuations aswell as damage the gas valve. Oversizing theregulator will cause irregular pulsating flamepatterns, burner rumble, potential flame outages,and possible gas valve damage.

If a single pressure regulator serves more than onerooftop unit, it must be sized to ensure that the inletgas pressure does not fall below 7" w.c. for naturalgas (10" w.c. for propane) with all the furnacesoperating at full capacity. The gas pressure mustnot exceed 14" w.c. when the furnaces are off.

7. Provide adequate support for all field installed gaspiping to avoid stressing the gas train and controls.

WWAARRNNIINNGGEExxpplloossiioonn HHaazzaarrdd!!FFaaiilluurree ttoo ffoollllooww ssaaffee lleeaakk tteesstt pprroocceedduurreess bbeelloowwccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy oorreeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy--ddaammaaggee..NNeevveerr uussee aann ooppeenn ffllaammee ttoo ddeetteecctt ggaass lleeaakkss.. UUssee aalleeaakk tteesstt ssoolluuttiioonn ffoorr lleeaakk tteessttiinngg..

8. Leak test the gas supply line using a soap-and-water solution or equivalent before connecting it tothe gas train.

9. Check the supply pressure before connecting it tothe unit to prevent possible gas valve damage andthe unsafe operating conditions that will result.

NNoottee:: Do not rely on the gas train shutoff valves toisolate the unit while conducting gaspressure/leak test. These valves are notdesigned to withstand pressures in excess of14" w.c. or 0.5 psig.


40 RT-SVX063C-EN

Figure 26. Gas heat component dimensions

Tonnage HeaterSize A B C D

20–30T 250, 350 &500 MBh 6.75 7.59 5.29 7.85

40–55T 350 MBh 6.75 11.85 5.42 11.58

40–75T 500 MBh 6.75 11.85 5.42 11.58

40–75T 850 MBh 10.5 11.85 5.42 11.58

Connecting the Gas Supply Line to theFurnace Gas TrainFollow the steps below to complete the installationbetween the supply gas line and the furnace. Refer tothe following figures, for the appropriate gas trainconfiguration.

1. Connect the supply gas piping using a “ground-

joint” type union to the furnace gas train and checkfor leaks.

2. Adjust the inlet supply pressure to therecommended 7" to 14" w.c. parameter for naturalgas (11" to 14" w.c. for propane).

3. Ensure that the piping is adequately supported toavoid gas train stress.


RT-SVX063C-EN 41

Table 11. Sizing natural gas pipe mains and branches

Gas SupplyPipe Run(ft)

Gas Input (Cubic Feet/Hour)

1¼" Pipe 1½" Pipe 2" Pipe 2½" Pipe 3" Pipe 4" Pipe

10 1,060 1,580 3,050 4,860 8,580 17,500

20 726 1,090 2,090 3,340 5,900 12,000

30 583 873 1,680 2,680 4,740 9,660

40 499 747 1,440 2,290 4,050 8,270

50 442 662 1,280 2,030 3,590 7,330

60 400 600 1,160 1,840 3,260 6,640

70 368 552 1,060 1,690 3,000 6,110

80 343 514 989 1,580 2,790 5,680

90 322 482 928 1,480 2,610 5,330

100 304 455 877 1,400 2,470 5,040

125 269 403 777 1,240 2,190 4,460

150 244 366 704 1,120 1,980 4,050

175 224 336 648 1,030 1,820 3,720

200 209 313 602 960 1,700 3,460

Notes:1. Table is based upon specific gravity of 0.60. Refer to the latest edition of the National Fuel Gas Code, Z223.1, unless superseded by local gas codes.2. If more than one unit is served by the same main gas supply, consider the total gas input (cubic feet/hr.) and the total length when determining

the appropriate gas pipe size.3. Obtain the Specific Gravity and BTU/Cu.Ft. from the gas company.4. The following example demonstrates the considerations necessary when determining the actual pipe size:

Example: A 40' pipe run is needed to connect a unit with a 850 MBH furnace to a natural gas supply having a rating of 1,000 BTU/Cu.Ft. and aspecific gravity of 0.60Cu.Ft/Hour = Furnace MBH InputGas BTU/Cu.Ft. X Multiplier Table 12, p. 41Cu.Ft/Hour = 850The above table indicates that a 2" pipe is required.

Table 12. Specific gravity multipliers

SpecificGravity Multiplier

0.50 1.10

0.55 1.04

0.60 1.00

0.65 0.96

Table 13. Natural gas – high altitude gas input rating reduction orifice chart

Heater size (MBh) 0-2000' 3000' 4000' 5000' 6000' 7000' 8000' 9000' 10000'

250 #34 #36 #36 #37 #37 #38 #39 #40 #42

350 #32 #34 #35 #35 #36 #36 #37 #38 #40

500 #34 #36 #36 #37 #37 #38 #39 #40 #42

850 #34 #36 #36 #37 #37 #38 #39 #40 #42

Note: Orifice sizes required to reduce input ratings by 4% per every 1000’ above 2000’ per the National Fuel Gas Code Z223.1.


42 RT-SVX063C-EN

Table 14. Propane (LP) – high altitude rating reduction orifice chart

Heatersize (MBh) 0-2000' 3000' 4000' 5000' 6000' 7000' 8000' 9000' 10000'

250 1.75 mm #51 #51 #51 #52 #52 #52 #53 #53

350 #49 #50 #50 #51 #51 #51 #52 #52 #52

500 #50 #51 #51 #51 #52 #52 #52 #53 #53

850(a) 1.65 mm #52 #53 #53 #53 #53 #54 #54 #54

Note: Orifice sizes required to reduce input ratings by 4% per every 1000’ above 2000’ per the National Fuel Gas Code Z223.1.

(a) 850,000 Btu/Hr at Sea Level input is 737,000 Btu/Hr


RT-SVX063C-EN 43

Figure 27. Unit gas trains 250/350 MBh 2 stage/modulating

Modulating valve (not on 2-stage)

Manual shutoffvalve

1” field connection elbow

One stage valve on Modulating, two stage valve on 2-stage

Figure 28. Unit gas trains 250/350 MBh ultramodulating & 500 MBh 2 stage/modulating


Manual shutoffvalve

Modulating valve (not on 2-stage)

One stage valves


44 RT-SVX063C-EN

Figure 29. Unit gas trains 500 MBh ultra modulating

Modulating valve

One stage valves

UL 536 FlexibleMetallic Hose

Manual shutoffvalve


Figure 30. Unit gas trains 850 MBh 4 stage/modulating/ultra modulating

Modulating valve(not on 4-stage)

One stage valve



Manual shutoffvalve

1-1/4” field connection elbow

One stage valve

One stage valve

One stage valve

Flue Assembly and Rain ShieldInstallation1. Locate the flue vent chimney, vent elbow, and, if

required, the rain shield in the supply fan section ofthe unit.

NNootteess::

1. Remove shipping covers prior toinstallation.

2. Refer to installation instructions in RT-SVN030*-EN for more detailedinstructions.

2. Install the flue vent elbow onto the inducer motorhousing using the provided sealing caulk andscrews.

3. Install the flue vent chimney to the exterior of theflue post.

4. Install the rain shield (40-75 ton units only) over thecombustion intake slots on the exterior of thevented access panel.


RT-SVX063C-EN 45

Gas Furnace Condensate DrainUnits equipped with a gas furnace have a 3/4" CPVCdrain connection stubbed out through the verticalsupport in the gas heat section. It is extremelyimportant that the condensate be piped to a properdrain. Refer to the appropriate illustration in Figure 26,p. 40 for the location of the drain connection.

NNoottee:: Units equipped with an optional modulating gasfurnace will likely operate in a condensing modepart of the time.

Ensure that all condensate drain line installationscomply with applicable building and waste disposalcodes.

NNoottee:: Installation on gas heat units will requireaddition of heat tape to the condensate drain.

Electric Heat UnitsElectric heat units operating on 200/230 volts requiretwo power supplies as illustrated in Figure 16, p. 34.Unless the unit was ordered with the optional factorymounted, non-fused disconnect switches, two field-supplied disconnect switches must be installed. Thepower wires for the electric heat are routed into theelectric heat control panel using the through-the-baseaccess provided in the heating section. Refer to the unitbase layout for dimensional data. For units operatingon 460/575 volts, only one power entry is required.

Use the information provided in the “Power WireSizing & Protection Device Equations,” to determinethe appropriate wire size and Maximum Over currentProtection for the heaters/unit.

NNoottee:: Each power supply must be protected from shortcircuit and ground fault conditions. To complywith NEC, protection devices must be sizedaccording to the “Maximum Over currentProtection” (MOP) or “Recommended DualElement” (RDE) fuse size data on the unitnameplate.

Provide grounding for the supply power circuit in theelectric heat control box.

Economizer and Relief AirDamper AdjustmentRelief Air DampersVerify that the relief dampers (if equipped) close tightlywhen the unit is off.

If relief dampers are not tightly closed with unit off,take the following steps to preload the dampers:

1. Loosen the relief damper actuator clamp from thejackshaft

2. From the unit display, command the actuators to4% open using the Manual mode. This will causethe actuators to rotate to approximately 5 degrees.

3. Close the dampers by hand and tighten the actuatoronto the jackshaft

4. Command the dampers to 0%. This will cause theactuators to rotate back to zero degrees, puttingload on the dampers so that they are fully closed at0% command.

5. Put the relief damper position back into Auto mode.

Outside Air & Return Air DamperOperationThe outside air and return air damper linkage isaccessible from the economizer section of the unit. Thedamper linkage connecting the outside air dampers tothe return air dampers is preset from the factory in thenumber 1 position.

WWAARRNNIINNGGNNoo SStteepp SSuurrffaaccee!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDoo nnoott wwaallkk oonn tthhee sshheeeett mmeettaall ddrraaiinn ppaann.. WWaallkkiinnggoonn tthhee ddrraaiinn ppaann ccoouulldd ccaauussee tthhee ssuuppppoorrttiinngg mmeettaallttoo ccoollllaappssee aanndd rreessuulltt iinn tthhee ooppeerraattoorr//tteecchhnniicciiaannffaalllliinngg..

NNoottee:: Bridging between the unit main supports mayconsist of multiple 2 x 12 boards or sheet metalgrating.

Arbitrarily adjusting the outside air dampers to openfully when the return air dampers are closed or; failingto maintain the return air pressure drop with theoutside air dampers when the return air dampers areclosed, can cause building pressurization controlproblems due to improper CFM being delivered to thespace.

The outside air/return air damper linkage is connectedto a crank arm with a series of holes that allows theinstaller or operator to modify the amount of outsideair or return air damper travel in order to balance thepressure drop between the two air paths.

Adjust the Outside Air Damper Travel

Units with Single Actuators (20 - 55 Ton)1. Drill a 1/4" hole through the unit casing up stream

of the return air dampers. Use a location that willproduce an accurate reading with the least amountof turbulence – several locations may be necessary,then average the reading.


46 RT-SVX063C-EN

WWAARRNNIINNGGHHaazzaarrddoouuss VVoollttaaggee!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. VVeerriiffyy tthhaatt nnooppoowweerr iiss pprreesseenntt wwiitthh aa vvoollttmmeetteerr..

IImmppoorrttaanntt:: HIGH VOLTAGE IS PRESENT ATTERMINAL BLOCK OR UNITDISCONNECT SWITCH.

2. Close the disconnect switch or circuit protectorswitch that provides the supply power to the unitterminal block or the unit mounted disconnectswitch.

3. Turn the 115 volt control circuit fused disconnectswitch to the On position.

WWAARRNNIINNGGLLiivvee EElleeccttrriiccaall CCoommppoonneennttss!!FFaaiilluurree ttoo ffoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnsswwhheenn eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..WWhheenn iitt iiss nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaallccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd eelleeccttrriicciiaannoorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn pprrooppeerrllyy ttrraaiinneeddiinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss ppeerrffoorrmmtthheessee ttaasskkss..

WWAARRNNIINNGGRRoottaattiinngg CCoommppoonneennttss!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinngg aanndd ssllaasshhiinnggtteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouussiinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

IImmppoorrttaanntt:: This procedure is for A&B cabinets (20–55 Ton) only.

4. Compare the static pressure reading to the staticpressure ranges and linkage positions in Table 16,p. 48 or Table 17, p. 49 for the unit configuration,unit size and operating CFM.

If the static pressure reading is greater than thepressure listed in Table 16, p. 48 or Table 17, p. 49for outside air damper position 1 then relocate theoutside air connecting rod to balance the outside airdamper pressure drop against the return staticpressure, using the following steps.

If the static pressure reading is less than thepressure listed in Table 16, p. 48 or Table 17, p. 49for outside air damper position 1, then determinethe appropriate pressure increase needed. Identifythe correct return damper linkage location usingTable 18, p. 49. Then, relocate the return airconnecting rod to balance the outside air damperpressure drop against the return static pressureusing the procedure starting in Step 10. If noadjustment is necessary, proceed to the last step.

5. On the outside air damper remove the drive rod andswivel from the crank arm(s). If only one holerequires changing, loosen only that end.

6. Manually open the outside air dampers to the fullopen position.

7. Manually close the return air dampers.

8. Reattach the drive rod and swivel to the appropriatehole(s). The length of the drive rod may need to beadjusted to align with the new hole(s) location. If so,loosen the lock nut on the drive rod against theswivel. Turn the swivel “in” or “out” to shorten orlengthen the rod as necessary. For some holes,both ends of the rod may need to be adjusted.

9. Tighten the lock nut against the swivel(s). Proceedto the last step.

10. On the return air damper remove the drive rod andswivel from the crank arm(s). If only one holerequires changing, loosen only that end.

11. Manually open the return air dampers to the fullopen position.

12. Manually close the outside air dampers.

13. Reattach the drive rod and swivel to the appropriatehole(s). The length of the drive rod may need to beadjusted to align with the new hole(s) location. If so,loosen the lock nut on the drive rod against theswivel. Turn the swivel “in” or “out” to shorten orlengthen the rod as necessary. For some holes,both ends of the rod may need to be adjusted.

14. Tighten the lock nut against the swivel(s).

15. Plug the holes (made during Step 1) after the properadjustments have been made.


RT-SVX063C-EN 47

Figure 31. Outside air damper

8

BOTTOM VIEWOUTSIDE AIR DAMPERS

BOTTOM VIEWRETURN AIR DAMPERS

OUTSIDE AIR DAMPERSRETURN AIR DAMPERS

1

23

4

5

6

7

9

10

1114

1213


48 RT-SVX063C-EN

Table 15. Outside air damper travel adjustment

Position

Outside Air DamperCrank ArmHoleConfiguration

Return Air DamperCrank ArmHoleConfiguration

1 1 - 3 90° 9 - 11 90°

2 1 - 4 75° 9 - 12 75°

3 1 - 6 60° 9 - 13 65°

4 2 - 5 40° 10 - 14 40°

5 2 - 7 31°

6 2 - 8 20°

Table 16. Outside air damper pressure drop — No Traq™™

No Traq™™

CFM

Outside Air Damper Position

#1 #2 #3 #4 #5 #6

20, 25 and 30 Ton

4000 0.06 0.07 0.08 0.16 0.24 0.87

6000 0.11 0.14 0.17 0.36 0.60 2.78

7000 0.14 0.21 0.25 0.49 0.83 -

8000 0.18 0.28 0.35 0.65 1.11 -

9000 0.22 0.36 0.46 0.83 1.42 -

10000 0.27 0.45 0.58 1.02 1.78 -

11000 0.32 0.56 0.72 1.24 2.17 -

12000 0.37 0.67 0.88 1.48 2.60 -

13000 0.43 0.80 1.05 1.74 - -

40, 50 and 55 Ton

8000 0.17 0.34 0.40 0.84 1.69 -

10000 0.25 0.47 0.56 1.24 2.48 -

12000 0.36 0.60 0.73 1.72 - -

14000 0.48 0.75 0.93 2.28 - -

16000 0.62 0.92 1.15 2.91 - -

18000 0.78 1.09 1.38 - - -

20000 0.95 1.28 1.64 - - -

22000 1.14 1.49 1.92 - - -

24000 1.34 1.71 2.22 - - -


RT-SVX063C-EN 49

Table 17. Outside air damper pressure drop — Traq™™

Traq™™

CFM


#1 #2 #3 #4 #5 #6

20, 25 and 30 Ton

4000 0.07 0.08 0.09 0.17 0.26 0.89

6000 0.15 0.18 0.21 0.40 0.64 2.82

7000 0.20 0.26 0.31 0.56 0.90 -

8000 0.26 0.35 0.43 0.73 1.19 -

9000 0.32 0.45 0.56 0.93 1.53 -

10000 0.40 0.57 0.71 1.15 1.91 -

11000 0.47 0.70 0.88 1.40 2.33 -

12000 0.56 0.85 1.06 1.67 2.79 -

13000 0.65 1.01 1.27 1.97 - -

40, 50 and 55 Ton

8000 0.23 0.40 0.46 0.89 1.75 -

10000 0.35 0.56 0.65 1.33 2.57 -

12000 0.49 0.73 0.86 1.85 - -

14000 0.66 0.93 1.11 2.45 - -

16000 0.85 1.15 1.38 - - -

18000 1.07 1.39 1.68 - - -

20000 1.31 1.64 2.00 - - -

22000 1.57 1.92 2.36 - - -

24000 1.86 2.23 2.74 - - -

Table 18. Return air pressure increase

CFM

Return Air Damper Position

#1 #2 #3 #4

20, 25 and 30 Ton

4000 0.00 0.01 0.06 0.06

6000 0.00 0.02 0.09 0.14

7000 0.00 0.03 0.11 0.19

8000 0.00 0.03 0.13 0.25

9000 0.00 0.04 0.14 0.31

10000 0.00 0.04 0.16 0.38

11000 0.00 0.05 0.18 0.46

12000 0.00 0.05 0.20 0.55

13000 0.00 0.06 0.22 0.65

40, 50 and 55 Ton

8000 0.00 0.07 0.15 0.17

10000 0.00 0.09 0.19 0.24


50 RT-SVX063C-EN

Table 18. Return air pressure increase (continued)

CFM


#1 #2 #3 #4

12000 0.00 0.10 0.22 0.33

14000 0.00 0.11 0.25 0.43

16000 0.00 0.13 0.28 0.55

18000 0.00 0.14 0.31 0.67

20000 0.00 0.15 0.33 0.81

22000 0.00 0.16 0.35 0.96

24000 0.00 0.17 0.37 1.13

Units with Dual Actuators (60, 70 & 75 Ton)The installer can adjust the stroke of the direct driveactuator on the O/A & R/A dampers to compensate forvarious R/A duct losses. Table 19, p. 50and Table 20, p.51 list the pressure drops for various actuator limitpositions based on the air flow (CFM) andconfiguration. The actuator stroke limit can be adjustedbetween 33% and 100% of full stroke. To adjust the O/Aor R/A damper for the correct pressure drop:

1. Drill a 1/4" hole through the unit casing up streamof the return air dampers. Use a location that willproduce an accurate reading with the least amountof turbulence – several locations may be necessary,then average the reading.

2. Measure the return duct static pressure.

3. Compare the static pressure reading to the staticpressure ranges and linkage positions in Table 19,p. 50 or Table 20, p. 51 for the unit configuration,unit size and operating CFM.

If the static pressure reading is greater than thepressure listed in Table 19, p. 50 or Table 20, p. 51for outside air damper position 100% then adjustthe outside air damper actuator to balance theoutside air damper pressure drop against the returnstatic pressure, using the following steps.

If the static pressure reading is less than thepressure listed in Table 19, p. 50 or Table 20, p. 51for outside air damper position 100%, thendetermine the appropriate return air pressure dropincrease needed. Identify the correct return damper

actuator position using Table 21, p. 51. Then, adjustthe return air damper actuator to balance theoutside air damper pressure drop against the returnstatic pressure using the following steps.

If no adjustment is necessary, proceed to step 6.

4. To set the actuator stroke limit:

a. Loosen the screw that secures the angle ofrotation limiter on the actuator adjacent to thedamper drive shaft clamp.

b. Move the limiter to the desired % open positionand, making sure the limiter teeth are engaged,retighten the screw.

5. After setting the end stop, the actuator needs to becycled through its auto-adapt feature to re-scale thecontrol range. With 24 VAC power applied to theactuator, turn the control signal reversing switchforward and back again two times. Within a fewseconds, the actuator will cycle itself to the newlimiter position and then back to zero.

NNoottee:: This process may take up to 5 minutes.The actuator will then be set to respond to the 2-10VDC control signal to cycle within the new range ofrotation set by the limiter. Verify that the controlsignal reversing switch is set back to its originaldefault position - Y = 0, set to CCW, which is thesame direction as spring return.

6. Plug the holes (made during Step 1) after the properadjustments have been made.

Table 19. Outside Air Pressure Drop (inches w.c.) – No Traq™™

No Traq™™

CFM


100% 75% 55% 45% 33%

60, 70 and 75 Ton

14000 0.16 0.30 0.43 0.60 1.10

16000 0.20 0.39 0.57 0.80 1.52


RT-SVX063C-EN 51

Table 19. Outside Air Pressure Drop (inches w.c.) – No Traq™™ (continued)

No Traq™™

CFM


100% 75% 55% 45% 33%

18000 0.25 0.49 0.73 1.03 2.00

20000 0.29 0.60 0.91 1.29 2.56

22000 0.35 0.72 1.11 1.58 -

24000 0.40 0.85 1.33 1.90 -

26000 0.47 0.99 1.57 2.24 -

28000 0.53 1.14 1.83 2.61 -

30000 0.60 1.31 2.10 - -

Table 20. Outside Air Pressure Drop (inches w.c.) – Traq™™

Traq™™

CFM


100% 75% 55% 45% 33%

60, 70 and 75 Ton

14000 0.34 0.48 0.61 0.78 1.28

16000 0.43 0.62 0.80 1.03 1.75

18000 0.54 0.78 1.02 1.33 2.30

20000 0.66 0.96 1.27 1.65 2.92

22000 0.78 1.15 1.55 2.02 -

24000 0.92 1.37 1.85 2.42 -

26000 1.07 1.60 2.18 2.85 -

28000 1.24 1.85 2.53 - -

30000 1.41 2.12 2.91 - -

Table 21. Return Air Pressure Increase (inches w.c.)

CFM


100% 80% 65% 45%

60, 70 and 75 Ton

14000 0.00 0.02 0.04 0.37

16000 0.00 0.03 0.06 0.53

18000 0.00 0.04 0.08 0.71

20000 0.00 0.05 0.11 0.92

22000 0.00 0.06 0.14 1.15

24000 0.00 0.07 0.17 1.41

26000 0.00 0.08 0.21 1.70

28000 0.00 0.10 0.25 -

30000 0.00 0.11 0.30 -


52 RT-SVX063C-EN

Figure 32. Actuator stroke limit adjustment

9

Philips screwdriver

Angle of Rotation Limiter

Scale Shows % of Full Stroke

Figure 33. Actuator auto-scaling feature details

Control Reversing Switch

Must Be Set to Match Spring Return Direction


RT-SVX063C-EN 53

Startup the UnitUse the following in conjunction with the “TraneStartup Checklist,” p. 59, to ensure that the unit isproperly installed and ready for operation. Be sure tocomplete all of the procedures described in this sectionbefore starting the unit for the first time.


☐ Turn the optional field supplied disconnect switch,located upstream of the rooftop unit, to the “Off”position.

☐ Turn the 115 volt control circuit fused disconnectswitch 1S1 to the “Off” position. It is located at thetop of the Main Control Box, behind the centerdoor.

☐ Check all electrical connections for tightness and“point of termination” accuracy.

☐ Verify that the condenser airflow will beunobstructed.

☐ Check the compressor crankcase oil level. Oilshould be visible in the compressor oil sight glass.The oil level should be 1/2 to 3/4 high in the sightglass with the compressor “Off”.

☐ Verify that service valves are open/back seated oneach circuit.

NNOOTTIICCEECCoommpprreessssoorr DDaammaaggee!!EExxcceessssiivvee lliiqquuiidd aaccccuummuullaattiioonn iinn tthhee ssuuccttiioonn lliinneessccoouulldd rreessuulltt iinn ccoommpprreessssoorr ddaammaaggee..DDoo nnoott aallllooww lliiqquuiidd rreeffrriiggeerraanntt ttoo eenntteerr tthhee ssuuccttiioonnlliinnee..

Do not start the unit in the cooling mode if the ambienttemperature is below the following minimumrecommended operating temperature:

NNoottee:: See , p. 76 for minimum outside air temperature.

☐ Inspect the interior of the unit for tools and debris.Install all panels in preparation for starting the unit.

Electrical Phasing


IImmppoorrttaanntt:: HIGH VOLTAGE IS PRESENT AT TERMINALBLOCK OR UNIT DISCONNECT SWITCH.

All units have a phase monitor installed inside the maincontrol box, behind the center door, in the top row ofcomponents. If the phase monitor shows a green LEDindicator, all phases are normal. Unit should operatenormally. If the phase monitor shows a red LEDindicator, there is a phase error. This error could be aloss of phase, phase imbalance, or reversed phasingwith customer supplied power wiring. Check for a lossof phase, a phase voltage imbalance of more than 10%,or disconnect all power and reverse any two customerpower leads.

Verifying Proper Fan Operation

WWAARRNNIINNGGHHaazzaarrddoouuss SSeerrvviiccee PPrroocceedduurreess!!FFaaiilluurree ttoo ffoollllooww aallll pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall aannddoonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroommppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaallhhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaallaanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthheeffoolllloowwiinngg iinnssttrruuccttiioonnss:: UUnnlleessss ssppeecciiffiieedd ootthheerrwwiissee,,ddiissccoonnnneecctt aallll eelleeccttrriiccaall ppoowweerr iinncclluuddiinngg rreemmootteeddiissccoonnnneecctt aanndd ddiisscchhaarrggee aallll eenneerrggyy ssttoorriinnggddeevviicceess ssuucchh aass ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg..FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttooeennssuurree tthhee ppoowweerr ccaann nnoott bbee iinnaaddvveerrtteennttllyyeenneerrggiizzeedd.. WWhheenn nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivveeeelleeccttrriiccaall ccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseeddeelleeccttrriicciiaann oorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeennttrraaiinneedd iinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttssppeerrffoorrmm tthheessee ttaasskkss..

1. Close the disconnect switch or circuit protectorswitch that provides the supply power to the unitterminal block 2XD1 or the optional unit mounteddisconnect switch 2QB1.

2. Turn the 115 volt control fused disconnect circuitswitch to the On position.

54 RT-SVX063C-EN

WWAARRNNIINNGGRRoottaattiinngg CCoommppoonneennttss!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinngg aanndd ssllaasshhiinnggtteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouussiinnjjuurryy..DDuurriinngg iinnssttaallllaattiioonn,, tteessttiinngg,, sseerrvviicciinngg aannddttrroouubblleesshhoooottiinngg ooff tthhiiss pprroodduucctt iitt mmaayy bbeenneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee aanndd eexxppoosseedd rroottaattiinnggccoommppoonneennttss.. HHaavvee aa qquuaalliiffiieedd oorr lliicceennsseedd sseerrvviicceeiinnddiivviidduuaall wwhhoo hhaass bbeeeenn pprrooppeerrllyy ttrraaiinneedd iinnhhaannddlliinngg eexxppoosseedd rroottaattiinngg ccoommppoonneennttss,, ppeerrffoorrmmtthheessee ttaasskkss..

3. Press the Stop button on the user interface. Tosetup and troubleshoot supply fan operation,navigate to Supply Fan Manual Override byfollowing the steps provided below.

NNoottee:: The unit’s design supply airflow isestablished when the supply fan is operatingat 100% speed command. If the designsupply airflow rating of the unit needs to bemodified, the newmaximum design speedmust be set at the supply fan’s variablefrequency drive (VFD) key pad. The usershould identify the maximum speed for thesupply fan wheels and ensure those speedsare not exceeded when making entries at theVFD key pads.

a. Press Stop and then touch Settings.

b. Touch Manual Control Settings in the Settingsscreen.

c. Touch Supply Fan Manual Override in theManual Control Settings screen.

d. Touch Manual, then touch Change value to: toadjust the speed setting, press Enter, then pressApply.

e. When done testing, touch Clear All ManualOverrides or select the individual override andpress Auto.

4. The above procedure can be followed for testingand setup of relief fans and condenser fans.

NNoottee:: Changes to the unit’s design relief airflowrating is modified at the user interface byadjusting the Relief Fan Maximum SpeedSetpoint located under the Service Settingsmenu.

Check all fans for proper rotation. Supply Fanrotation is indicated by an arrow located on the fanhousing (clockwise from motor side of fan). ReliefFan rotation is counter-clockwise when viewedfrom the motor side of the fan assembly.Condenser Fan rotation is clockwise when viewedfrom the top.

SSttaarrttuupp tthhee UUnniitt

RT-SVX063C-EN 55

Direct-Drive Supply Fan SpeedAdjustmentUnits equipped with a DDP Supply Fan do not use belt/sheave arrangements to adjust fan speed.

This adjustment (if required) is made through the FanVFD by setting the supply fan Min/Max frequency ateach supply fan VFD using Table 22, p. 55.

Table 22. RPM and Hz ranges for DDP supply fanspeed adjustments

Fan Speed (RPM) VFD Frequency Range (Hz)

Max Min Max Min

2400 888 83 31

2300 851 79 29

2200 814 76 28

2100 777 72 27

2000 740 69 26

1900 703 66 24

1800 666 62 23

1700 629 59 22

1600 592 83 31

1500 555 79 29

1400 518 74 27

1300 481 68 25

1200 444 63 23

Table 22. RPM and Hz ranges for DDP supply fanspeed adjustments (continued)

Fan Speed (RPM) VFD Frequency Range (Hz)

Max Min Max Min

1100 407 58 21

1000 370 53 20

NNoottee:: Maximum operating speed cannot exceed fanwheel mechanical limit.

System Airflow MeasurementsVAV and CV Systems with DDP SupplyFan and Motorized Impeller Relief Fan(optional)

Supply and Relief Airflow MeasurementPiezometer pressure taps are available to measuresupply and relief airflow. Piezometer pressure taps caninterface with customer-supplied airflow monitoringsystems using the F or K-factors and equation shown inthe tables below. Attach one end of the pressuredifferential gauge to a connection in the fan conethroat, and the second to the fan inlet plate to readpressure immediately upstream of the fan.

Table 23. Piezo airflow calculation

UnitFandia, in F C1 A

20,25,30 16.5 1518.6 753.06 0.55

40,50,55 18.2 1821.9 692.03 0.72

20,25,30,-40,50,55 20 2185.8 692.03 0.87

20,25,30,-60,70,75 22.2 2713.9 692.03 1.07

40,50,55 24.5 3285 692.03 1.3

60,70,75 27 3397.6 692.03 1.58

Notes:1. Measure pressure from inlet side of fan to piezo

tap at the cone throat.2. Fan inlet will be the high pressure side.3. dP can be up to 25 in h20.4. Coefficients are for one fan. For two fans double

result or F and C1 values.5. For standard density of 0.075 lb/ft^3, Supply Fan

CFM = CFM = F * √ dP6. For non-standard density, Supply Fan CFM = CFM

= C1 * A * √ (dP / ρ), where dP is the piezopressure differential and rho is the actual airdensity.


56 RT-SVX063C-EN

For relief fans, check the nameplate model number onthe fan to determine the K-factor, see table below.

Table 24. K-factor for relief fans

Fan Model K-factor

K3G500 281

K3G560 348

Use this equation to determine flow for relief fans:

Where K is determined based on the fan modelnumber, ρs is standard air density of 0.075 lb/ft3, ρa isambient air density, and ΔP is the pressure differentialmeasured by the pressure transducer. The equationgives flow for one fan. Airflow must be multiplied bythe number of fans installed in the unit.

Traq™™ Sensor Airflow Measurement((OOppttiioonnaall wwiitthh aallll uunniittss eeqquuiippppeedd wwiitthh aanneeccoonnoommiizzeerr))

1. Use to program the following system componentsfor Economizer operation by scrolling through thedisplays;

• Supply Fan (On)

• Outside air dampers (Selected % Open)

• Variable Frequency Drive (100% Output, ifapplicable)

• Outside Air CFM Setpoint

• Outside Air Pre-Heater Operation (if applicable)

2. Navigate to Supply Fan Manual Overrides. Thesupply fan speed will be adjusted through the userinterface. With the unit in Stop, touch the ManualOverride button for the Supply Fan. Set the FanSpeed to 100%.

3. With the unit operating in the “Manual Override”,the amount of outside air flowing through theTraq™ sensor can be viewed.

4. Navigate to the “ECONOMIZER POSITION” andread the corresponding damper openingpercentage (%).

Gas Furnace StartupStaged, Modulating, and UltraModulatingIt is important to establish and maintain theappropriate air/fuel mixture to assure that the gasfurnace operates safely and efficiently.

The volume of air supplied by the combustion blowerdetermines the amount of oxygen available forcombustion, while the manifold gas pressureestablishes fuel input. By measuring the percentage of

carbon dioxide produced as a by-product ofcombustion, the operator can estimate the amount ofoxygen used and modify the air volume or the gaspressure to obtain the proper air/fuel ratio.

Confirming the correct air/fuel mixture for a furnaceresults in rated burner output, limited production ofcarbon monoxide, and a steady flame that minimizesnuisance shutdowns.

High-Fire Adjustment

WWAARRNNIINNGGHHaazzaarrddoouuss GGaasseess aanndd FFllaammmmaabblleeVVaappoorrss!!FFaaiilluurree ttoo oobbsseerrvvee tthhee ffoolllloowwiinngg iinnssttrruuccttiioonnss ccoouullddrreessuulltt iinn eexxppoossuurree ttoo hhaazzaarrddoouuss ggaasseess,, ffuueellssuubbssttaanncceess,, oorr ssuubbssttaanncceess ffrroomm iinnccoommpplleetteeccoommbbuussttiioonn,, wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouussiinnjjuurryy.. TThhee ssttaattee ooff CCaalliiffoorrnniiaa hhaass ddeetteerrmmiinneedd tthhaatttthheessee ssuubbssttaanncceess mmaayy ccaauussee ccaanncceerr,, bbiirrtthh ddeeffeeccttss,,oorr ootthheerr rreepprroodduuccttiivvee hhaarrmm..IImmpprrooppeerr iinnssttaallllaattiioonn,, aaddjjuussttmmeenntt,, aalltteerraattiioonn,,sseerrvviiccee oorr uussee ooff tthhiiss pprroodduucctt ccoouulldd ccaauusseeffllaammmmaabbllee mmiixxttuurreess oorr lleeaadd ttoo eexxcceessssiivvee ccaarrbboonnmmoonnooxxiiddee.. TToo aavvooiidd hhaazzaarrddoouuss ggaasseess aannddffllaammmmaabbllee vvaappoorrss ffoollllooww pprrooppeerr iinnssttaallllaattiioonn aannddsseettuupp ooff tthhiiss pprroodduucctt aanndd aallll wwaarrnniinnggss aass pprroovviiddeeddiinn tthhiiss mmaannuuaall..

WWAARRNNIINNGGEExxpplloossiioonn HHaazzaarrdd!!FFaaiilluurree ttoo pprrooppeerrllyy rreegguullaattee pprreessssuurree ccoouulldd rreessuullttiinn aa vviioolleenntt eexxpplloossiioonn,, wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh,,sseerriioouuss iinnjjuurryy,, oorr eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy--ddaammaaggee..WWhheenn uussiinngg ddrryy nniittrrooggeenn ccyylliinnddeerrss ffoorrpprreessssuurriizziinngg uunniittss ffoorr lleeaakk tteessttiinngg,, aallwwaayyss pprroovviiddeeaa pprreessssuurree rreegguullaattoorr oonn tthhee ccyylliinnddeerr ttoo pprreevveenntteexxcceessssiivveellyy hhiigghh uunniitt pprreessssuurreess.. NNeevveerr pprreessssuurriizzeeuunniitt aabboovvee tthhee mmaaxxiimmuumm rreeccoommmmeennddeedd uunniitt tteessttpprreessssuurree aass ssppeecciiffiieedd iinn aapppplliiccaabbllee uunniitt lliitteerraattuurree..

1. Program the following system components foroperation by scrolling through the User Interfacedisplays:

GGaass HHeeaatt

a. Open the manual gas valve, located in the gasheat section.

b. Navigate to the Gas Heat Manual overridescreen and set the modulating percentage to100% or enable the 1st stage. Touch the Autobutton.

c. Turn the Supply Fan on by navigating to theManual Override Screen. Set the Fan speed to100%.

2. Once the system has started, check the appearance


RT-SVX063C-EN 57

of each burner's flame. Color should be blue fornatural gas with a small amount of visible orange.

3. Check the manifold gas pressure of each gas valveby using the pressure port on the manifold sectiondownstream of the valve. The manifold pressure foreach valve at High Fire should be set to 3.5" w.c.(10.0" w.c. for propane).

NNoottee:: On modulating gas units the one-stage valvejust upstream of the modulating valve settingwill be approximately 4.5"w.c. to achieve amanifold pressure of 3.5" downstream of themodulating valve on high fire.

If adjustment is needed, adjust the regulator on thevalve. Refer to , p. 57 for two stage valve on 250 &350 MBh two stage, and Figure 35, p. 58 for onestage valve on all other multi-stage and modulatingburners, for the adjustment screw location. Turn thescrew clockwise to increase the gas pressure orcounterclockwise to decrease the gas pressure.

Combustion Air Analysis1. Using a flue analyzer make note of the oxygen,

carbon dioxide, and the Air Free CO levels. Takeseveral samples to assure an accurate reading.

IImmppoorrttaanntt:: The flue reading should be taken fromcenter of flue and at least 4 inches downfrom the outlet.

2. Compare the measured oxygen level to thecombustion curve in Figure 34, p. 57. The oxygencontent of the flue gas should be 4% to 5%. If theoxygen level is outside this range, contact theTechnical Support for assistance.

Low-Fire Adjustment (250 & 350 MBHTwo Staged only)1. Use the TEST initiation procedures outlined in the

previous section to operate the furnace in the low-fire state (1st Stage).

2. Check the manifold gas pressure of the valve byusing the pressure port on the manifold sectiondownstream of the valve. The manifold pressure forLow Fire First Stage should be set to 1.2" w.c. (3.0"w.c. for propane). If adjustment is needed, adjustthe LO regulator on the two stage valve. Refer to ,p. 57 for the adjustment screw location. Turn thescrew clockwise to increase the gas pressure orcounterclockwise to decrease the gas pressure.

3. Check the oxygen, carbon dioxide, and the Air FreeCO levels after each adjustment.

4. Tap the STOP button on the User Interface to stopthe system operation.

Figure 34. Natural gas combustion curve (ratio of oxygen to carbon dioxide in percent)

0123456789

101112131415161718

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Perc

en

t C

arb

on

Dio

xid

e

Percent Oxygen

A =

A

Curve Fuel1,000 BTU per cu ft.of Natural Gas


58 RT-SVX063C-EN

Figure 35. One stage valve adjustment

Figure 36. Two stage valve adjustment

HI LO

Final Unit CheckoutAfter completing all of the checkout and start-upprocedures outlined in the previous sections (i.e.,operating the unit in each of its Modes through allavailable stages of cooling and heating), perform thesefinal checks before leaving the unit:


IImmppoorrttaanntt:: HIGH VOLTAGE IS PRESENT AT TERMINALBLOCK OR UNIT DISCONNECT SWITCH.

☐ Close the disconnect switch or circuit protectorswitch that provides the supply power to the unitterminal block or the unit mounted disconnectswitch.

☐ Inspect the unit for misplaced tools, hardware, anddebris.

☐ Verify that all exterior panels including the controlpanel doors and condenser grilles are secured inplace.


RT-SVX063C-EN 59

Trane Startup ChecklistThis checklist is intended to be a guide for the Tranetechnician just prior to unit 'startup'. Many of therecommended checks and actions could expose thetechnician to electrical and mechanical hazards. Referto the appropriate sections in the this manual forappropriate procedures, component specifications andsafety instructions.

IImmppoorrttaanntt:: This checklist is not intended as asubstitution for the contractor’s installationinstruction.

IImmppoorrttaanntt:: Except where noted, it is implied that theTrane technician is to use this checklist forinspection/verification of prior taskscompleted by the general contractor atinstallation. Use the line item content toalso record the associated values onto theTrane unitary packaged equipment log.

JJoobb NNaammee SSeerriiaall ##

JJoobb LLooccaattiioonn MMooddeell ##

SSaalleess OOrrddeerr ## SShhiipp DDaattee

UUnniitt DDLL ## ((ssppeecciiaall uunniittss)) DDaattee

SSttaarrttiinngg SSaalleess OOffffiiccee TTeecchhnniicciiaann

Table 25. Startup checklist

Completed?General Start-up

1 Is adequate access/egress provided? Yes No

2 Initial site inspection performed? Yes No

3 Unit exterior inspected for damage (dents, bends, missing panels, doors work properly)? Yes No

4 Unit clearances adequate to avoid air recirculation? Yes No

5 Verify crankcase heaters are working and on for 8 hours prior to unit start Yes No

6 Verify unit interior is free from debris and obstructions, etc. Yes No

7 All unit drain lines and traps are properly installed Yes No

8 Verify unit is grounded. Confirm a ground wire is coming from the power source Yes No

9 Verify main power feed wire gauge is properly sized for current load Yes No

10 Verify all wiring connections are tight Yes No

11 Verify all field control wiring for CV, SZVAV or VAV controls are complete Yes No

12 Verify hold down bolts from fan sections removed Yes No

13 Fan section isolators checked/adjusted (approximately ¼” gap above shipping block) Yes No

14 Verify compressor oil levels at proper levels Yes No

15 Compressor discharge service valves and optional suction service valves open/back seated Yes No

16 Verify fans rotate freely Yes No

17 Verify refrigerant charge on each circuit Yes No

18 Verify correct voltage supplied to unit and electrical heaters Yes No

19 Verify there are no unit phase monitor errors. Yes No

20 Verify all fans rotate in proper direction Yes No

21 Verify fan amperages within nameplate specs (please document on log sheet) Yes NoUnit Configuration and Setup

1 Verify model number in the UCM configuration matches unit model number on nameplate Yes No

2 Configure unit using IOM and critical control parameters using critical control parameters table Yes No

Air Cooled Condenser1 All coil fins inspected and straightened Yes No

2 Condenser fans are rotating freely Yes No

3 Verify the fan blade set-screws to the motor shaft of the condenser fan assemblies are tight Yes NoOutside Air and Economizer (if applicable)

1 Verify damper linkages are tight/adjusted and tip seals are in good condition Yes No

2 Outside air pressure sensor installed and tubing connected to fitting on unit exterior Yes No

3 Duct pressure tubing connected to duct pressure sensor Yes No

4 Tubing from controlled space connected to space pressure fitting (StatiTrac) Yes No


60 RT-SVX063C-EN

Table 25. Startup checklist (continued)

Completed?Electric Heat (if applicable)

1 Electric heat circuits have continuity Yes No

2 Perform electric heat start up procedure Yes No

3 Verify heating systemmatches name plate Yes NoGas Heat (if applicable)

1 Gas heat piping includes drip leg previously installed by installing contractor Yes No

2 Gas heat flue assembly fully installed Yes No

3 Gas heat condensate line and heat tape installed where applicable Yes No

4 Verify heating systemmatches name plate Yes No

5 Perform Gas Heat start up procedure in IOM Yes NoSystem Checkout

1 Verify system airflow Yes No

2 Verify dampers open and close properly Yes No

3 Adjust economizer damper travel Yes No

4Verify compressor operation, voltage and amperage matches name plate information (please document on logsheet) Yes No

5 Electric heat operation verified Yes No

6 Incoming gas pressure does not drop below 7" water column when burner is on high fire Yes No

7 Gas heat operation has been verified with combustion analyzer Yes No

8 Operating log completed Yes No

9 All panels & doors secured Yes No

10 Complete all required documentation Yes No

Critical Control Parameters and Dry Bulb Changeover Map

Table 26. Critical control parameters

Description SuggestedParameter

Economizer SettingsRegion1

Region2

Region3

Region4

Region5

Region6

Region7

Supply Air Temperature Control Setpoint 55°FSupply Air Temperature Deadband 8°F (2°F eFlex™)Supply Air Pressure Setpoint 1.8" w.c.Supply Air Pressure Deadband 0.1" w.c.Building Static Pressure Setpoint 0.03" w.c.Building Static Pressure Deadband 0.04" w.c.Standby Freeze Avoidance 20%Exhaust Enable Setpoint 10%Economizer Minimum Position Setpoint 10%Fixed Dry Bulb Economizer C/O Type a(Moist)*

TOA >65°F

TOA >65°F

TOA >65°F

TOA >65°F

TOA >70°F

TOA >70°F

TOA >70°F

Fixed Dry Bulb Economizer C/O Type b (Dry)* TOA > 75°FFixed Dry Bulb Economizer C/O Type c(Marine)*

TOA >75°F

TOA >75°F

TOA >75°F

Fixed Reference (Enthalpy Changeover) HOA > 28 BtuDifferential Comparative (EnthalpyChangeover) HOA > HRANotes:

1. See map in next figure for dry bulb changeover.Examples:- Minneapolis, Minnesota is in “Region 6" and resides in “Moist” subregion, thus designation is 6b. Economizer changeover setting should be75°F.- Charleston, South Carolina is in “Region 3" and resides in “Moist” subregion, thus the designation is 3c. Economizer changeover settingshould be 65°F.

2. Using the Human Interface (HI), go to SETUP menu and input setting for parameters listed in the table above.3. Use the Dry bulb changeover map to determine region of country based on unit site location.4. Fixed speed compressor units 8°F deadband.5. eFlex™ compressor units 2°F deadband.


RT-SVX063C-EN 61

Figure 37. Dry bulb changeover map


62 RT-SVX063C-EN

OperationSequence of Operation

NNOOTTIICCEECCoommpprreessssoorr FFaaiilluurree!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinnccoommpprreessssoorr ffaaiilluurree..UUnniitt mmuusstt bbee ppoowweerreedd aanndd ccrraannkkccaassee hheeaatteerrsseenneerrggiizzeedd aatt lleeaasstt 88 hhoouurrss BBEEFFOORREE ccoommpprreessssoorrssaarree ssttaarrtteedd..

SZVAV Cooling Sequence of OperationSingle Zone VAV units will be equipped VFD controlledsupply fans which will be controlled by the Symbio 800through Modbus commands. The VFD output will becontrolled between the 37%-100% range. The supplyfan can be operated as a continuous or cyclingoperation.

Fan Cycling OperationWhen there is no demand for heating, cooling,dehumidification, and all forms of heating and coolingcapacity are off, the supply fan will cycle off. Theoutdoor air damper and relief damper will also close.

Fan Continuous OperationThe supply fan will operate continuously. When thereis no heating nor cooling demand and all forms of heatand cool are off, the supply fan will continue to operateat a minimum speed (variable speed units). Theoutdoor air damper will continue to provide ventilation.

Sequence of OperationIf the Symbio 800 determines that there is a need foractive cooling capacity in order to meet the calculatedDischarge Air Temperature Setpoint Active, the unitwill begin to stage compressors accordingly oncesupply fan proving has been made. Note that thecompressor staging order will be based on unitconfiguration and compressor run status.

Once the Discharge Air Setpoint Active calculation hasreached its bottom limit (Lower Limit Setpoint) andcompressors are being utilized to meet the demand,the Discharge Air Temperature Setpoint Active valuecontinues to calculate below the Lower Limit Setpointand the algorithm will begin to ramp the Supply FanSpeed up toward 100%. Note that the supply fan speedwill remain at the compressor stage’s associatedminimum value (as described below) until theDischarge Air Temperature Setpoint Active value iscalculated below the Lower Limit Setpoint.

As the cooling load in the zone decreases the zonecooling algorithm will reduce the speed of the fandown to minimum per compressor stage and controlthe compressor outputs accordingly. As thecompressors begin to de-energize, the Supply Fan

speed will fall back to the Cooling Stage’s associatedminimum fan speed, but not below. As the load in thezone continues to drop, cooling capacity will bereduced in order to maintain the discharge air withinthe ± ½ deadband.

Cooling Stages Minimum Fan SpeedAs the unit begins to stage compressors to meet thecooling demand, the following minimum Supply FanSpeeds will be utilized for each corresponding CoolingStage. Note that the Supply Fan Speed will be allowedto ramp up beyond 37% as determined by theDischarge Air Temperature Setpoint Active calculation;the speeds below are only the minimum speeds percooling stage. Note that when transitioning betweenactive cooling stages, compressors may energize priorto the supply fan reaching the minimum speed for theassociated step.

1. 22--SSttaaggee DDXX CCoooolliinngg - The minimum fan speed forunits with 2 stages of DX Cooling will be 37% of theunit’s full airflow capacity. At Stage 1 of DX Coolingthe minimum Fan Speed will be 37% and at Stage 2of DX Cooling the Fan Speed will be at a minimumof 67%.

2. 44--SSttaaggee DDXX CCoooolliinngg - The minimum fan speed forunits with 4 stages of DX Cooling will be 37% of theunit’s total airflow. At Stage 1 the minimum SupplyFan Speed will be 37%, at Stage 2 the minimumSupply Fan Speed will be 58%, and at Stages 3 & 4the minimum Supply Fan Speed will be 67%.

Units without an EconomizerUpon entering an “occupied” mode of operation, theinput from the remote panel starts the supply fan.When the supply fan starts, the fan proving iscommunicated from the VFD, signaling that airflow hasbeen established and the VFD will begin to ramp thefan.

When cooling is requested from a zone temperaturesensor, the operating condition of the system using thesupply air temperature input and the outdoortemperature input is determined before sending therequest to energize mechanical cooling. Once therequest is processed, the compressor is proven. Afterthe first functional stage has started, the saturatedrefrigerant pressure is monitored and the condenserfan outputs are energized when the saturatedrefrigerant pressure rises above the “lower limit”setpoint.

Units with an EconomizerUpon entering an “occupied” mode of operation, theinput from the remote panel starts the supply fan.When the supply fan starts, the fan proving iscommunicated from the VFD, signaling that airflow hasbeen established and the VFD will begin to ramp the

RT-SVX063C-EN 63

fan. The economizer dampers are set to the specified“minimum position”.

When cooling is requested from a zone temperaturesensor, the operating condition of the system using thesupply air temperature input and the outdoortemperature input is determined before sending therequest to energize mechanical cooling.

Units with Traq™™ SensorThe outside air enters the unit through the Traq™Sensor assemblies and is measured by velocitypressure flow rings. The velocity pressure flow ringsare connected to a pressure transducer/solenoidassemblies. The solenoid is used for calibrationpurposes to compensate for temperature swings thatcould affect the transducer. The Symbio™ 800 utilizesthe velocity pressure inputs, the outdoor airtemperature input, and the minimum outside air CFMsetpoint to modify the volume (CFM) of outside airentering the unit as the measured airflow deviates fromsetpoint.

Low Charge ProtectionFor each refrigerant circuit, the Symbio 800™ controllercalculates a percent full charge estimate. A low chargewarning occurs below 70% charge and the circuit locksout below 50%.

Frostat™™ ControlThe Symbio 800™ Frostat™ control unloads circuitcompressors to prevent coil frosting at low suctionpressure. Settings are adjustable at the user interfaceand a diagnostic will be displayed at the user interfacewhen Frostat™ compressor protection is active.

Balanced StartsWhen Balanced Starts is selected, the Symbio 800™controller performs a wear calculation that combinesboth number of starts and runtime. Compressors willthen be staged to equalize wear between compressors.

NNoottee:: Balanced Starts is not available with the variablespeed compressor option.

Units Equipped with 100%ModulatingReliefThe relief dampers are controlled through input from aspace transducer and modulate the relief dampers tomaintain the space pressure to within the specifiedsetpoint controlband.

Modulating Hot Gas Reheat Sequence ofOperationWhile hot gas reheat is active, the discharge air will becontrolled to the Supply Air Reheat Setpoint bymodulating the amount of reheat produced by thereheat coil. The Supply Air Reheat Setpoint, Occupied

and Unoccupied Dehumidification Setpoints areadjustable via the human interface and BAS/Networkcontrol.

Hot gas reheat will be terminated when the humidity inthe space is reduced to the active space humiditysetpoint - 5% or when an overriding condition such asheating or cooling demand or a failure occurs in acomponent required for dehumidification.

On VAV units, at start-up, satisfying the VAV OccupiedCooling setpoint, MWU setpoint, and DWU setpointwill have priority over dehumidification mode. Onceheating modes are satisfied, and the unit is satisfyingthe SA Cooling Setpoint, dehumidification mode willbe entered if no more than half the unit mechanicalcooling capacity is requested.

On SZVAV units, hot gas reheat will be similar to VAVmodulating hot gas reheat with the exception of adynamic Supply Air Reheat Setpoint. Rather thanutilizing a static Supply Air Reheat Setpoint, once theunit enters dehumidification, the Discharge AirSetpoint will be calculated based on the Zonetemperature vs. Zone Cooling Setpoint error and willbe capped at the user selected Supply Air Reheatsetpoint.

Hot gas reheat is not allowed during VAV HeatingModes (Changeover input closed). Once active, hot gasreheat control will remain active for a minimum ofthree minutes unless a priority unit shutdown requestis received or the High Pressure Control input opens oneither circuit.

Hot gas reheat control can be enabled separately foroccupied and unoccupied modes of operation via theHuman Interface and is overridden/disabled whetheractive or inactive by the following methods:

• Priority unit shutdown conditions (Emergency stop,Ventilation Override, Network Stop, etc.)

• Compressor circuit manual reset lockouts on eithercircuit. Low Refrigerant Charge monitoring is activeduring dehumidification mode and will lockoutcompressor circuits based on the same criteria usedfor cooling mode.

• Humidity Sensor Failure• For VAV units, (in occupied) hot gas reheat will be

disabled if space temp is less than the DehumidOverride Low Zone Setpoint or higher than theDehumid Override High Zone Setpoint. If hot gasreheat is inactive it will not be allowed until it spacetemp rises higher than the Dehumid Override LowZone Setpoint + 1.0°F or lower than the DehumidOverride High Zone Setpoint - 2.0°F.

• For SZVAV units, hot gas reheat will be disabled ifspace humidity levels have fallen below the ActiveOcc/Unocc Dehumidification Setpoint -5%Dehumidification Hysteresis Offset, the zonetemperature has dropped too close to the ZoneHeating Setpoint in any unit mode (Zone Temp. isless than ZHSP + 0.5°F), the zone temperature risesabove the Zone Cooling Setpoint +2°F in any unit

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64 RT-SVX063C-EN

mode, Entering Evaporator Temperature falls toolow, Froststat input becomes active, or Reheatbecomes disabled.

• For CV and all units in unoccupied, if space temp isless than the Zone Heating Setpoint (ZHSP) + 0.5° Fif hot gas reheat is active, or less than ZHSP + 1.0° Fif not hot gas reheat mode will be disabled. If zoneconditions result in a cooling request for more thanone-half the available cooling capacity of the unithot gas reheat will be disabled and will transition tocooling control. If hot gas reheat is inactive,dehumidification will not be allowed until the activeunit cooling capacity request drops to half theavailable cooling capacity or less, unless the spacetemp is less than the Zone Cooling Setpoint.

• In CV units in occupied mode, if the unit is not in“AUTO” system mode and is set to “HEAT” systemmode via the HI, BAS, or Zone Sensor device,dehumidification control will be disabled at spacetemps above Occupied ZCSP + 1.0° F. Ifdehumidification is inactive it will not be allowed toactivate if space temp is greater than the OZCSP.

All units configured for modulating hot gas reheat willhave a reheat condenser coil purge function to ensureproper refrigerant distribution in the reheat circuit. Thisfeature is always enabled and will monitor the amountof cumulative compressor run time while the reheatcondenser coil pumpout relay is in a certain state. Ifcompressors accrue an amount of run time equal to theHI-adjustable purge interval time without the pumpoutrelay changing states a purge cycle will be initiatedlasting for three minutes.

During this cycle all compressors but the 2ndcompressor on circuit # will be energized if notalreadywill remain in capacity control, the reheat valveand cooling valves will be set to 50%, and the reheatcoil pumpout relay will be toggled to its opposite state.After the three-minute purge cycle completes the purgeinterval timer will be reset and all system componentswill return to the state they were in prior to enteringpurge.

During hot gas reheat control an evaporator frostcontrol function designed specifically for reheat modeswill be active. This function will reduce refrigerationcircuit capacity to 50% (1st compressor on each circuitremaining on) when the Entering Evaporator Tempdrops below a non-adjustable limit of 35° F for 10continuous minutes. Once capacity is reduced, it willremain reduced until the current cycle of hot gas reheatis terminated or a purge cycle occurs.

If the Entering Evaporator Temp remains below 35° Ffor an additional 10 minutes will be de-activated andremain off until the Entering Evaporator Temp risesabove 45°F. Even though all compressors have beende-activated the unit will remain in dehumidificationmode and re-enable compressors up to 50% capacitywhen the Entering Evaporator Temp rises to 45°F orgreater.

Gas Heating Sequence of Operation

Two Stage Gas FurnaceThe control system for the rooftop units are wired toensure that the heating and cooling do not occursimultaneously. Refer to the wiring diagram thatshipped with the unit while reviewing the followingsequence of operation.

Modulating Gas Sequence of Operation

Call for Heat Initiated1. A call for heat is initiated by the digital Modbus

signal.

2. The gas heat control board will then go through asystem check to ensure that the high temperaturelimit and rollout switches are closed, the airpressure switch is open, and the modulating valveis positioned correctly.

3. The control will then enter the pre-purge cyclewhere the inducer will run at the programmedpurge pressure. During this cycle, the control willlook for the air pressure switch to close and open atthe correct settings.

4. Once the system check and pre-purge cycles arecomplete, the control will enter the ignition cycle.

a. The modulating valve and inducer will go totheir “ignition” settings.

b. The DSI ignition module will be energized andthe spark igniter will activate.

c. The redundant safety valve will open, allowinggas flow.

d. The burners will ignite and the control willreceive a signal from the flame sensor.

e. The spark igniter will remain active for theduration of the ignition cycle regardless of flamestatus.

5. If flame is not established during the ignition cycle,the control will repeat the pre-purge and ignitionscycles up to three times. After three failed ignitionattempts, the board will enter a 1 hour lockout.

6. Once flame has been established, the control willenter a warmup period to ensure flame stabilizationand reduce condensation in the heat exchanger.

7. After the warmup period, the gas heat control willenter the run cycle. During the run cycle, the burnerfiring rate and draft inducer pressure aredetermined based on the heat demand received bythe control via a Modbus signal.

NNoottee:: If the control is paired with a split manifold,steps 1 through 6 pertain to the primaryburners. Once the control exits the warmupperiod and the firing rate is dictated by therooftop control, the control will ignite thesecondary burners and modulate the primaryburners based on the demand for heat.

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RT-SVX063C-EN 65

8. The run cycle will continue until any of thefollowing conditions are met.

Call for Heat Terminated1. Any of the safety devices (high limit, air pressure,

rollout, etc.) are triggered.

2. Once the run cycle has terminated, the redundantsafety valve will close, the modulating valve willreturn to its set position, and the draft inducer willramp up to its “ignition” setting for a 30 secondpost - purge cycle.

3. After the conclusion of the post-purge, the gas heatcontrol will enter the “OFF” state. All systemoutputs are de-energized, but all safety devices arestill monitored.

Flame FailureOnce locked out on flame failure, the IC board will notreactivate the ignition/combustion control circuit until itis reset manually. To do this, press the reset button onthe front of the (IC) board case.

A set of relay contacts is available for external use forheat fail (Information Only).

NNoottee:: The modulating gas heaters are factory adjustedfor safe operation and to reach the nameplaterated firing MBH for most areas of the country.The proper air/gas ratio must be reached by theservice tech during start-up.

Electric Heat Sequence of OperationThe control system for the rooftop units are wired toensure that heating and cooling do not occursimultaneously. Refer to electric heat wiring diagramsthat shipped with the unit while reviewing thefollowing sequence of operation. As you review thesequence of operations, remember these points:

• There are three automatic high temperature limitswitches that will trip when exposed to a hightemperature. They will reset automatically once thetemperature drops into an acceptable range. If anyone limit switch trips, all stages of heat are turnedoff. The limits are mounted vertically on the heaterterminal plate and all three have the sametemperature set point.

• A manual reset temperature limit is mounted nearthe top of the terminal plate and serves as backupprotection. When exposed to high temperature, itwill turn all stages of heat off until the reset buttonis manually pressed.

Table 27. Limit settings (°F)

Unit Size kW Auto Manual

20–30 Ton

30 160 190

60 160 190

90 160 190

40–55 Ton

60 160 190

90 150 190

120 150 190

150 150 180

60–75 Ton

90 150 190

120 150 190

190 160 180

Rapid Restart OperationAfter a power outage, certain applications requireoverride of the normal unit startup sequence toaddress high temperature loads. Rapid Restartoperation expedites cooling action through the use ofeconomizer and/or compressor operation within aspecified time to abate elevated return airtemperatures.

External Fan Control OperationSystem and custom programmable controllers areallowed to take direct control of supply and relief fanoperation. Each fan has two points to allow control, thefirst point must be enabled to allow external controloperation while the second point is used to control thefan On and Off, as well as command the fans speed.Unit airflow protection will be honored during externalfan control operation. Regardless, the user isresponsible for airflow control, as well as maintainingproper discharge duct pressure and building staticpressure at all times. Refer to the BACnet IntegrationGuide for further information.

ControlsConstant Volume System Controls

Constant Volume Zone Panel(BAYSENS108*)This electronic sensor features four system switchsettings (Heat, Cool, Auto, and Off) and two fan settings(On and Auto). It is a manual or automatic changeovercontrol with dual setpoint capability.

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Compressor Motor WindingThermostatsCSHD and CSHWCompressorsThe compressors contain an internal line breakoverload which stops the compressors under a numberof operating conditions that cause excessive motortemperature. These include rapid cycling, loss ofcharge, abnormally high suction temperatures,excessive amperage, phase loss and low voltage

CSHN CompressorsPTC sensors are embedded in the motor windings ofeach Scroll compressor. These sensors are wired to theprotection module which protects the motor from overtemperature that can occur under a number ofabnormal operating conditions. These include rapidcycling, loss of charge, abnormally high suctiontemperatures, low voltage and excessive amperage.

VZH Variable Speed CompressorsOver current and over torque protection for VZHcompressors are provided by the inverter.

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Figure 38. Compressor and condenser fan locations and names

Note: For Refrigera�on system names listed here, please refer to Model Number Digit 9 to differen�ate between the 'S', 'H', and 'V' designa�ons

2M6 2M7

Comp 1A(2M1)

Comp 1B(2M2)

Comp 1C(2M3)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 20S, 25S, 30S

2M6 2M7

Comp 1A(2M1)

Comp 1B(2M2)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 20H, 20V, 25H, 25V, 30H, 30V

2M6 2M7

Comp 1A(2M1)

Comp 1B(2M2)

Comp 2A(2M4)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 40S, 40H, 50S, 50H, 55S, 55H

2M9 2M10Circuit 2 Condenser

Fans & Motors

Comp 2B(2M5)

2M6 2M7

Comp 1A(2M1)

Comp 2A(2M4)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 40V, 50V, 55V

2M9 2M10Circuit 2 Condenser

Fans & Motors

Comp 2B(2M5)

Comp 1A(2M1)

Comp 1B(2M2)

Comp 2A(2M4)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 60S, 60H, 70S, 70H, 75S, 75H,

75V

2M9Circuit 2 Condenser

Fans & Motors

Comp 2B(2M5)

2M10 2M11

2M6 2M7 2M8

Comp 1A(2M1)

Comp 2A(2M4)

Circuit 1 Condenser

Fans & Motors

Refrigeration Systems: 60V, 70V

2M9Circuit 2 Condenser

Fans & Motors

Comp 2B(2M5)

2M10 2M11

2M6 2M7 2M8

Condenser Fan Legend

= Fixed Speed Motor

= Fixed Speed Motor-- OR --

(Optional) Low Ambient VFD Driven Motor

Compressor Legend

= Fixed Speed Compressor

= Fixed Speed Compressor-- OR –

(Optional) eFlex Variable Speed Compressor

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Performance DataSupply Fan CurvesPlease see notes below for all supply fan curves. Foradditional information or support, contact your localTrane sales office or Trane representative.

IImmppoorrttaanntt::

1. Shaded area represents selectable area.

2. Supply fan performance curve includesinternal resistance of rooftop. Todetermine total static pressure, addsystem external static pressure toappropriate component static pressuredrops (evaporator coil, filters,economizer, reheat coil, heatingsystem, final filters).

3. Motor horsepower offerings aredesignated by horsepower lines shownon fan performance map.

Figure 39. 20, 25 and 30 ton, 16.5 inch - 9 Blade - 80%width supply fan

3000 RPM

2800 RPM

2600 RPM

2400 RPM

2200 RPM

2000 RPM

1800 RPM

1600 RPM

1400 RPM

1200 RPM

1000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

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Airflow, CFM

NNoottee:: Maximum airflow (for cULus approval) asfollows: 20 ton - 9000 CFM, 25 ton - 11,250 CFM,30 ton - 13,500 CFM

Figure 40. 20, 25 and 30 ton, 16.5 inches - 9 blade -100% width supply fan

3000 RPM

2800 RPM

2600 RPM

2400 RPM

2200 RPM

2000 RPM

1800 RPM

1600 RPM

1400 RPM

1200 RPM

1000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000

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Airflow, CFM


Figure 41. 20, 25 and 30 ton, 20.0 inch - 9 blade - 80%width supply fan

2500 RPM

2400 RPM

2300 RPM

2200 RPM

2100 RPM

2000 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

950 RPM

60%

1300 RPM

1100 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000

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RT-SVX063C-EN 69


2500 RPM

2300 RPM

2100 RPM

1900 RPM

1700 RPM

1500 RPM

1300 RPM

1100 RPM

950 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000

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Airflow, CFM



2300 RPM

2200 RPM

2100 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

950 RPM

1100 RPM

2000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000

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Airflow, CFM



2700 RPM

2500 RPM

2300 RPM

2100 RPM

1900 RPM

1700 RPM

1500 RPM

1300 RPM

1100 RPM

900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500

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Airflow, CFM

NNoottee:: Maximum airflow (for cULus approval) asfollows: 40 ton - 18,000 CFM, 50/55 ton - 24,750CFM


2500 RPM

2300 RPM

2100 RPM

1900 RPM

1700 RPM

1500 RPM

1300 RPM

1100 RPM

950 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500

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Airflow, CFM


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70 RT-SVX063C-EN


2100 RPM

2000 RPM

1900 RPM

1800 RPM

1300 RPM

1700 RPM

1600 RPM

1500 RPM

1200 RPM

1100 RPM

1400 RPM

950 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500

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Airflow, CFM



2000 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

950 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500

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Airflow, CFM


Figure 48. 60 and 75 ton, 22.2 inch - 9 blade - 100%width supply fan

2200 RPM

2100 RPM

2000 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500 30000

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Figure 49. 60 and 75 ton, 27.0 inch - 9 blade - 100%width supply fan

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

950 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500 30000 32500

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RT-SVX063C-EN 71

Relief Fan CurvesPlease see notes below for all supply fan curves. Foradditional information or support, contact your localTrane sales office or Trane representative.

IImmppoorrttaanntt::

1. Shaded area represents selectable area.Contact your local Trane representativefor more information.

2. Relief fan performance curve includesinternal resistance of rooftop. Todetermine total static pressure, addreturn static pressure and relief damperpressure drop.

3. EC motors are not offered in integralhorsepower increments. All fans will beoffered with nominal motor powerrated to cover the operating envelope ofthe fan. Power limitation is indicated onfan map.

Figure 50. 20 to 25 ton, 6 hp relief fan, single fan

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

1980 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

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Airflow, CFM

Figure 51. 20 ton, 8 hp relief fan, single fan

2000 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

900 RPM

1000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

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Airflow, CFM

Figure 52. 30 ton, 12 hp relief fan, two-fan array

1980 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000

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Figure 53. 25, 30 and 40 ton, 8 hp relief fan, single fan

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

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Airflow, CFM

Figure 54. 40 ton, 15 hp relief fan, two-fan array

2000 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

1900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000

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Figure 55. 50 and 55 ton, 12 hp relief fan, two-fanarray

1980 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 2500 5000 7500 10000 12500 15000 17500

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Airflow, CFM

Figure 56. 50 and 55 ton, 16 hp relief fan, two-fanarray

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

900 RPM

1100 RPM

1000 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500

Sta!

c Pr

essu

re, I

nche

s w

.c.

Airflow, CFM

Figure 57. 60, 70 and 75 ton, 16 hp relief fan, two-fanarray

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1200 RPM

1100 RPM

1000 RPM

900 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500

Sta!

c Pr

essu

re, I

nche

s w

.c.

Airflow, CFM

Figure 58. 60, 70 and 75 ton, 23 hp relief fan, three-fanarray

2000 RPM

1900 RPM

1800 RPM

1700 RPM

1600 RPM

1500 RPM

1400 RPM

1300 RPM

1100 RPM

1000 RPM

900 RPM

1200 RPM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0 2500 5000 7500 10000 12500 15000 17500 20000 22500 25000 27500 30000

Sta!

c Pr

essu

re, I

nche

s w

.c.

Airflow, CFM

OOppeerraattiioonn

RT-SVX063C-EN 73

Component Static Pressure Drops

Table 28. Static pressure drops — relief dampers

Nominal Tons CFMRelief DamperPressure Drop(in w.c.)

20-40 Single Fan

2,000 0.044,000 0.166,000 0.378,000 0.6510,000 1.02

30-55 Dual Fan

4,000 0.046,000 0.098,000 0.1610,000 0.2612,000 0.3714,000 0.516,000 0.6518,000 0.8320,000 1.0222,000 1.24

60-75 Dual or Three-Fan Array

6,000 0.078,000 0.1210,000 0.1912,000 0.2714,000 0.3716,000 0.4818,000 0.6120,000 0.7522,000 0.9124,000 1.0826,000 1.2728,000 1.47

Notes:1. Relief damper static pressure drop is used only for relief fan selections.2. Use Relief CFM to determine pressure drop to add to return duct static

pressure for relief fan selection.

OOppeerraattiioonn

74 RT-SVX063C-EN

Table29.

Componentstaticpressuredrops(in.H

2O)

Tons

CFM Std

EvapCoil

HGRH

HeatingSystem

Filters

Econom

izer

Standard

High

Efficien-

cyVariable

Gas

Electric

PreEvapPanel

Pre

Evap

Cart

Final

Cart

Re-

turnAir

Out-

side

AirW/

OTraq

Out-

side

AirW/

Traq

Dry

Wet

Dry

Wet

Dry

Wet

250

MBh

350

MBh

500

MBh

850

MBh

AllkW

2"

Merv

4

2"

Merv

8

4"

Merv

8

4"

Merv

14

20

4000

0.06

0.06

0.08

0.08

0.08

0.08

0.01

0.08

0.05

0.04

0.03

0.03

0.05

0.04

0.09

0.08

0.08

0.05

0.03

0.05

5000

0.08

0.09

0.11

0.12

0.11

0.12

0.01

0.12

0.08

0.06

0.04

0.05

0.07

0.07

0.14

0.12

0.12

0.07

0.05

0.07

6000

0.10

0.12

0.14

0.16

0.14

0.16

0.02

0.17

0.11

0.09

0.06

0.07

0.10

0.10

0.20

0.18

0.18

0.10

0.08

0.10

7000

0.12

0.15

0.17

0.20

0.16

0.20

0.02

0.23

0.15

0.12

0.08

0.10

0.14

0.13

0.28

0.24

0.24

0.14

0.10

0.14

8000

0.14

0.19

0.19

0.25

0.19

0.25

0.03

0.30

0.20

0.16

0.11

0.13

0.18

0.17

0.36

0.32

0.32

0.18

0.13

0.18

9000

0.17

0.23

0.23

0.30

0.23

0.30

0.04

0.38

0.25

0.20

0.13

0.17

0.23

0.22

0.46

0.40

0.40

0.23

0.17

0.23

25

5000

0.06

0.06

0.11

0.12

0.14

0.15

0.01

0.12

0.09

0.07

0.04

0.05

0.07

0.07

0.14

0.12

0.12

0.07

0.05

0.07

6250

0.08

0.08

0.15

0.17

0.19

0.21

0.02

0.19

0.13

0.10

0.06

0.08

0.11

0.10

0.22

0.19

0.19

0.11

0.08

0.11

7500

0.10

0.11

0.19

0.22

0.24

0.28

0.02

0.28

0.19

0.15

0.09

0.12

0.16

0.15

0.32

0.28

0.28

0.16

0.12

0.16

8750

0.12

0.14

0.22

0.29

0.28

0.36

0.03

0.38

0.26

0.20

0.13

0.16

0.22

0.20

0.44

0.38

0.38

0.22

0.16

0.22

100000.14

0.18

0.27

0.36

0.34

0.44

0.04

0.50

0.34

0.27

0.17

0.21

0.29

0.27

0.57

0.49

0.49

0.28

0.21

0.29

112500.17

0.22

0.33

0.43

0.42

0.53

0.05

0.63

0.44

0.34

0.21

0.26

0.36

0.34

0.72

0.62

0.62

0.36

0.27

0.36

30

6000

0.15

0.00

0.19

0.19

0.18

0.19

0.01

0.17

0.13

0.10

0.06

0.07

0.10

0.10

0.20

0.18

0.18

0.10

0.08

0.10

7500

0.20

0.00

0.25

0.28

0.25

0.28

0.02

0.26

0.21

0.15

0.09

0.12

0.16

0.15

0.32

0.28

0.28

0.16

0.12

0.16

9000

0.23

0.00

0.32

0.38

0.31

0.38

0.03

0.38

0.30

0.22

0.13

0.17

0.23

0.22

0.46

0.40

0.40

0.23

0.17

0.23

105000.30

0.00

0.37

0.48

0.37

0.48

0.04

0.52

0.40

0.30

0.18

0.23

0.32

0.29

0.63

0.54

0.54

0.31

0.23

0.32

120000.37

0.00

0.46

0.60

0.46

0.59

0.05

0.68

0.53

0.39

0.24

0.30

0.41

0.38

0.82

0.71

0.71

0.41

0.30

0.41

140000.48

0.00

0.59

0.75

0.59

0.75

0.07

0.92

0.72

0.53

0.33

0.41

0.56

0.52

1.12

0.97

0.97

0.56

0.41

0.56

40

8000

0.14

0.14

0.22

0.24

0.20

0.22

0.02

0.24

0.16

0.19

0.09

0.05

0.08

0.07

0.20

0.16

0.19

0.08

0.22

0.27

100000.19

0.20

0.30

0.34

0.31

0.34

0.02

0.37

0.25

0.30

0.14

0.08

0.13

0.12

0.31

0.26

0.29

0.13

0.34

0.43

120000.23

0.27

0.36

0.46

0.45

0.49

0.03

0.53

0.37

0.43

0.20

0.11

0.19

0.17

0.45

0.37

0.42

0.19

0.49

0.62

140000.27

0.35

0.45

0.58

0.61

0.67

0.05

0.72

0.50

0.59

0.28

0.15

0.25

0.23

0.62

0.51

0.57

0.26

0.66

0.84

160000.34

0.43

0.56

0.72

0.79

0.87

0.06

0.94

0.65

0.76

0.36

0.20

0.33

0.30

0.80

0.66

0.74

0.34

0.86

1.10

180000.41

0.53

0.68

0.85

1.00

1.10

0.08

1.19

0.83

0.97

0.46

0.25

0.42

0.37

1.02

0.84

0.94

0.43

1.09

1.39

50

100000.25

0.27

0.38

0.41

0.31

0.34

0.02

0.38

0.25

0.32

0.14

0.08

0.13

0.12

0.31

0.26

0.29

0.13

0.34

0.43

125000.34

0.39

0.50

0.58

0.42

0.48

0.04

0.59

0.39

0.50

0.22

0.12

0.20

0.18

0.49

0.40

0.45

0.21

0.53

0.67

150000.41

0.52

0.60

0.78

0.52

0.65

0.05

0.85

0.57

0.72

0.32

0.17

0.29

0.26

0.71

0.58

0.65

0.30

0.76

0.96

175000.52

0.67

0.77

1.00

0.65

0.83

0.07

1.16

0.77

0.98

0.43

0.23

0.40

0.35

0.96

0.79

0.89

0.41

1.03

1.31

200000.64

0.83

0.96

1.22

0.80

1.02

0.09

1.51

1.01

1.29

0.57

0.31

0.52

0.46

1.26

1.03

1.16

0.53

1.35

1.71

225000.78

0.99

1.17

1.46

0.98

1.22

0.12

1.91

1.28

1.63

0.72

0.39

0.65

0.59

1.59

1.31

1.47

0.67

1.71

2.17

55

110000.36

0.39

0.43

0.47

0.36

0.39

0.03

0.46

0.31

0.39

0.17

0.09

0.16

0.14

0.38

0.31

0.35

0.16

0.41

0.52

137500.49

0.57

0.57

0.68

0.47

0.57

0.04

0.71

0.48

0.61

0.27

0.14

0.24

0.22

0.59

0.49

0.55

0.25

0.64

0.81

165000.59

0.76

0.70

0.91

0.59

0.76

0.06

1.03

0.69

0.88

0.39

0.21

0.35

0.31

0.86

0.70

0.79

0.36

0.92

1.17

192500.75

0.96

0.91

1.16

0.75

0.97

0.09

1.40

0.94

1.19

0.52

0.28

0.48

0.43

1.16

0.96

1.08

0.49

1.25

1.59

220000.94

1.18

1.13

1.42

0.94

1.19

0.11

1.83

1.22

1.56

0.68

0.37

0.63

0.56

1.52

1.25

1.41

0.64

1.63

2.07

247501.14

1.40

1.37

1.69

1.14

1.41

0.14

2.31

1.55

1.97

0.87

0.47

0.79

0.71

1.93

1.58

1.78

0.81

2.07

2.62

60

120000.17

0.18

0.34

0.36

0.33

0.36

0.03

0.36

0.44

0.17

0.05

0.09

0.08

0.24

0.22

0.25

0.14

0.37

0.46

150000.23

0.26

0.45

0.51

0.44

0.51

0.05

0.56

0.69

0.26

0.08

0.14

0.13

0.38

0.34

0.38

0.22

0.57

0.72

180000.29

0.34

0.53

0.69

0.56

0.69

0.07

0.80

1.00

0.38

0.11

0.21

0.18

0.55

0.49

0.55

0.32

0.82

1.04

210000.34

0.44

0.68

0.88

0.68

0.88

0.09

1.10

1.36

0.52

0.15

0.28

0.25

0.74

0.66

0.75

0.44

1.12

1.42

240000.43

0.55

0.85

1.07

0.85

1.07

0.12

1.43

1.78

0.68

0.20

0.37

0.33

0.97

0.87

0.98

0.57

1.46

1.85

270000.52

0.66

1.03

1.28

1.03

1.27

0.15

1.81

2.25

0.86

0.25

0.47

0.41

1.23

1.10

1.24

0.73

1.85

2.34

OOppeerraattiioonn

RT-SVX063C-EN 75

Table29.

Componentstaticpressuredrops(in.H

2O)(continued)

Tons

CFM Std

EvapCoil

HGRH

HeatingSystem

Filters

Econom

izer

Standard

High

Efficien-

cyVariable

Gas

Electric

PreEvapPanel

Pre

Evap

Cart

Final

Cart

Re-

turnAir

Out-

side

AirW/

OTraq

Out-

side

AirW/

Traq

Dry

Wet

Dry

Wet

Dry

Wet

250

MBh

350

MBh

500

MBh

850

MBh

AllkW

2"

Merv

4

2"

Merv

8

4"

Merv

8

4"

Merv

14

70

140000.35

0.38

0.21

0.24

0.21

0.24

0.03

0.48

0.61

0.23

0.07

0.13

0.11

0.33

0.29

0.33

0.20

0.50

0.63

172000.46

0.53

0.27

0.33

0.26

0.33

0.04

0.73

0.92

0.35

0.10

0.19

0.17

0.50

0.45

0.50

0.29

0.75

0.95

204000.54

1.44

0.30

0.43

0.32

0.43

0.05

1.03

1.30

0.49

0.14

0.27

0.24

0.70

0.63

0.71

0.41

1.06

1.34

236000.69

0.88

0.38

0.54

0.38

0.54

0.07

1.37

1.74

0.65

0.19

0.36

0.32

0.94

0.84

0.95

0.55

1.41

1.79

268000.85

1.07

0.48

0.66

0.48

0.66

0.09

1.77

2.24

0.84

0.25

0.46

0.41

1.21

1.08

1.22

0.72

1.82

2.31

300001.02

1.26

0.57

0.78

0.57

0.78

0.12

2.22

2.81

1.06

0.31

0.58

0.51

1.52

1.35

1.53

0.90

2.28

2.89

75

150000.47

0.51

0.24

0.26

0.24

0.26

0.03

0.56

0.70

0.26

0.08

0.14

0.13

0.38

0.34

0.38

0.22

0.57

0.72

180000.58

0.00

0.29

0.35

0.28

0.35

0.04

0.80

1.01

0.38

0.11

0.21

0.18

0.55

0.49

0.55

0.32

0.82

1.04

210000.68

0.88

0.32

0.45

0.34

0.45

0.06

1.09

1.38

0.52

0.15

0.28

0.25

0.74

0.66

0.75

0.44

1.12

1.42

240000.85

1.08

0.39

0.55

0.39

0.55

0.08

1.42

1.80

0.68

0.20

0.37

0.33

0.97

0.87

0.98

0.57

1.46

1.85

270001.03

1.29

0.48

0.67

0.48

0.67

0.10

1.80

2.28

0.86

0.25

0.47

0.41

1.23

1.10

1.24

0.73

1.85

2.34

300001.22

1.51

0.57

0.79

0.57

0.79

0.12

2.22

2.81

1.06

0.31

0.58

0.51

1.52

1.35

1.53

0.90

2.28

2.89

Notes: 1.Staticpressuredropsofaccessorycomponentsmustbeaddedtodeterminetotalstaticpressureforfanselections.

2.Gasheatsectionmaximum

temperatureriseof60°F.

3.Economizerstaticpressurevalueforsizingsupplyfanisthehighestofthefollowing:a)Returnairstaticpressuredroppluscustomerreturnductstaticpressureandb)Outsideair

staticpressuredrop.

OOppeerraattiioonn

76 RT-SVX063C-EN

Refrigeration

Electronic Compressor Protection Module(CPM)The CSHN*** compressors come equipped with acompressor protection device (CPM) capable ofdetecting phase reversal, phase loss, and motoroverheating. When a fault is identified, the output relaywill open. Depending on the fault, the CPM may eitherauto-reset or it may lock-out. The CPM can be manuallyreset by cycling control power.

NNoottee:: If the compressor has tripped due to anoverheated windings condition, the motorwinding temperature sensor resistance (PTC) willbe 4500 ohms or greater; the resistance must beless than 2750 ohms before the 5 minute resettimer becomes enabled.

Low Ambient Condenser Fans

OperationLow ambient condenser fan motors are available as afactory installed option for all tonnages. When thisoption is equipped, one fan motor for each condenserv-coil assembly will have its speed controlled by a VFD.These speed adjustments are primarily based on thehead pressure transducer's reading for each refrigerantcircuit.

Table 30. Minimum outside air temperature

Low Ambient Unit MinimumOutside AirTemperature for Mechanical Cooling

Without Hot Gas Bypass 0°F

With Hot Gas Bypass 10°F

Standard Ambient Condenser FansStandard ambient units stage condenser fans down toa minimum of one fan per circuit. All standard ambientunits ship with the Symbio™ controller set to allowmechanical cooling down to 50°F outdoor temperature.This setting is adjustable. , p. 76 lists the minimumrecommended mechanical cooling setting for standardambient units by application and unit type.

Table 31. Minimum outside air temperature

Standard Unit MinimumOutside Air Temperature for

Mechanical CoolingStd &

High Capunits

eFlex™™ units

20, 60,70, 75ton

25, 30,40, 50,55 ton

Economizer - A/C Applications 45°F 45°F 50°F

No Economizer - 80/67F designreturn air 45°F 45°F 55°F

No Economizer - 90/78F designreturn air 50°F 50°F 70°F

OOppeerraattiioonn

RT-SVX063C-EN 77

Service and MaintenanceWWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee aanndd EExxppoossuurree ttooUUllttrraavviioolleett RRaaddiiaattiioonn!!TThhiiss pprroodduucctt ccoonnttaaiinnss ccoommppoonneennttss tthhaatt eemmiitt hhiigghh--iinntteennssiittyy uullttrraavviioolleett ((UUVV--CC)) rraaddiiaattiioonn wwhhiicchh ccaann bbeehhaarrmmffuull ttoo uunnpprrootteecctteedd eeyyeess aanndd sskkiinn,, aanndd ccaauusseesseerriioouuss ddaammaaggee ttoo tthhee eeqquuiippmmeenntt..FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn bbuurrnnss oorr eelleeccttrrooccuuttiioonn wwhhiicchh ccoouulldd rreessuullttiinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriiccaall ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss,, aanndd mmaakkee ssuurree tthhee UUVV lliigghhttss aarree ooffffbbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouuttpprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbeeiinnaaddvveerrtteennttllyy eenneerrggiizzeedd..TTrraannee ddooeess nnoott rreeccoommmmeenndd ffiieelldd iinnssttaallllaattiioonn ooffuullttrraavviioolleett lliigghhttss iinn iittss eeqquuiippmmeenntt ffoorr tthhee iinntteennddeeddppuurrppoossee ooff iimmpprroovviinngg iinnddoooorr aaiirr qquuaalliittyy.. TTrraanneeaacccceeppttss nnoo rreessppoonnssiibbiilliittyy ffoorr tthhee ppeerrffoorrmmaannccee oorrooppeerraattiioonn ooff oouurr eeqquuiippmmeenntt iinn wwhhiicchh uullttrraavviioolleettddeevviicceess wweerree iinnssttaalllleedd oouuttssiiddee ooff tthhee TTrraannee ffaaccttoorryyoorr iittss aapppprroovveedd ssuupppplliieerrss..

78 RT-SVX063C-EN

Table 32. Filter data

UnitTons

Evaporator Filters Final Filters

2" Panel Filters(MERV 4 or MERV 8)

4" Panel Filters(MERV 8 or MERV

14)2" Prefilters Cartridge Filters 2" Prefilters Cartridge Filters

Qty Size ofEach

FaceArea(ft2)

Qty Size ofEach

FaceArea(ft2)

Qty Size ofEach

Qty Size ofEach

FaceArea(ft2)

Qty Size ofEach

Qty Size ofEach

FaceArea(ft2)

20

4 16x20x2

32.2

4 16x20x4

32.2

4 16x20x2 4 16x20x12

33.3

4 16x20x2 4 16x20x12

33.36 20x20x2 6 20x20x4 4 20x20x2 4 20x20x12 4 20x20x2 4 20x20x12

2 20x24x2 2 20x24x4 4 20x24x2 4 20x24x12 4 20x24x2 4 20x24x12

25

4 16x20x2

32.2

4 16x20x4

32.2

4 16x20x2 4 16x20x12

33.3

4 16x20x2 4 16x20x12

33.36 20x20x2 6 20x20x4 4 20x20x2 4 20x20x12 4 20x20x2 4 20x20x12

2 20x24x2 2 20x24x4 4 20x24x2 4 20x24x12 4 20x24x2 4 20x24x12

30

4 16x20x2

32.2

4 16x20x4

32.2

4 16x20x2 4 16x20x12

33.3

4 16x20x2 4 16x20x12

33.36 20x20x2 6 20x20x4 4 20x20x2 4 20x20x12 4 20x20x2 4 20x20x12

2 20x24x2 2 20x24x4 4 20x24x2 4 20x24x12 4 20x24x2 4 20x24x12

40

3 20x20x2

39.7

3 20x20x4

39.7

2 20x20x2 2 20x20x12

41.6

4 20x20x2 4 20x20x12

39.17 20x24x2 7 20x24x4 6 20x24x2 6 20x24x12 6 20x24x2 6 20x24x12

2 24x24x2 2 24x24x4 4 24x24x2 4 24x24x12 2 24x24x2 2 24x24x12

50

3 20x20x2

39.7

3 20x20x4

39.7

2 20x20x2 2 20x20x12

41.6

4 20x20x2 4 20x20x12

39.17 20x24x2 7 20x24x4 6 20x24x2 6 20x24x12 6 20x24x2 6 20x24x12

2 24x24x2 2 24x24x4 4 24x24x2 4 24x24x12 2 24x24x2 2 24x24x12

55

3 20x20x2

39.7

3 20x20x4

39.7

2 20x20x2 2 20x20x12

41.6

4 20x20x2 4 20x20x12

39.17 20x24x2 7 20x24x4 6 20x24x2 6 20x24x12 6 20x24x2 6 20x24x12

2 24x24x2 2 24x24x4 4 24x24x2 4 24x24x12 2 24x24x2 2 24x24x12

60

2 20x20x2

52.9

2 20x20x4

52.9

2 20x20x2 2 20x20x12

52.9

4 20x20x2 4 20x20x12

49.87 20x24x2 7 20x24x4 7 20x24x2 7 20x24x12 8 20x24x2 8 20x24x12

6 24x24x2 6 24x24x4 6 24x24x2 6 24x24x12 3 24x24x2 3 24x24x12

70S

2 20x20x2

52.9

2 20x20x4

52.9

2 20x20x2 2 20x20x12

52.9

4 20x20x2 4 20x20x12

49.87 20x24x2 7 20x24x4 7 20x24x2 7 20x24x12 8 20x24x2 8 20x24x12

6 24x24x2 6 24x24x4 6 24x24x2 6 24x24x12 3 24x24x2 3 24x24x12

70H/V

12 20x24x2

72.0

12 20x24x2

72.0

2 20x20x2 2 20x20x12

52.9

4 20x20x2 4 20x20x12

49.88 24x24x2 8 24x24x2 7 20x24x2 7 20x24x12 8 20x24x2 8 20x24x12

— — — — 6 24x24x2 6 24x24x12 3 24x24x2 3 24x24x12

75S

2 20x20x2

52.9

2 20x20x4

52.9

2 20x20x2 2 20x20x12

52.9

4 20x20x2 4 20x20x12

49.87 20x24x2 7 20x24x4 7 20x24x2 7 20x24x12 8 20x24x2 8 20x24x12

6 24x24x2 6 24x24x4 6 24x24x2 6 24x24x12 3 24x24x2 3 24x24x12

75H/V

12 20x24x2

72.0

12 20x24x2

72.0

2 20x20x2 2 20x20x12

52.9

4 20x20x2 4 20x20x12

49.88 24x24x2 8 24x24x2 7 20x24x2 7 20x24x12 8 20x24x2 8 20x24x12

— — — — 6 24x24x2 6 24x24x12 3 24x24x2 3 24x24x12

FFiilltteerr LLaayyoouuttss

SSeerrvviiccee aanndd MMaaiinntteennaannccee

RT-SVX063C-EN 79

Table 33. 2" & 4" panel filters (20-30 ton)

16x20 16x20 16x20 16x20

20x20 20x20 20x20 20x24

20x20 20x20 20x20 20x24

Table 34. 2" & 4" panel filters (40-55 ton)

20x20 20x20 20x20 20x24

20x24 20x24 20x24 24x24

20x24 20x24 20x24 24x24

Table 35. 2" & 4" panel filters (60S, 60H/V, 70S ton)

20x20 20x20 20x24 20x24 20x24

20x24 20x24 24x24 24x24 24x24

20x24 20x24 24x24 24x24 24x24

Table 36. 2" & 4" panel filters (70H/V, 75S, 75H/V ton)

20x24 20x24 20x24 24x24 24x24

20x24 20x24 20x24 24x24 24x24

Table 37. Cartridge filters (20-30 ton)

16x20 16x20 16x20 16x20

20x20 20x20 20x24 20x24

20x20 20x20 20x24 20x24


20x20 20x20 20x24 20x24

20x24 20x24 24x24 24x24

20x24 20x24 24x24 24x24


20x20 20x20 20x24 20x24 20x24

20x24 20x24 24x24 24x24 24x24

20x24 20x24 24x24 24x24 24x24

Table 40. Final filters (20-30 ton)

16x20 16x20 16x20 16x20

20x20 20x20 20x24 20x24

20x20 20x20 20x24 20x24


20x20 20x20 20x24 20x24

20x20 20x20 20x24 20x24

20x24 20x24 24x24 24x24


80 RT-SVX063C-EN


20x20 20x20 20x24 20x24 20x24

20x20 20x20 20x24 20x24 20x24

20x24 20x24 24x24 24x24 24x24

Monthly Maintenance

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Before completing the following checks, turn the unitOOFFFF and lock the main power disconnect switch open.

FiltersInspect the return air filters. Clean or replace them ifnecessary. Refer to the Service and Maintenancechapter for filter information.

Cooling Season


☐ Check the unit’s drain pans and condensate pipingto ensure that there are no blockages.

☐ Check that the condensate overflow switch floatmoves freely.

☐ Inspect the evaporator and condenser coils for dirt,bent fins, etc. If the coils appear dirty, clean themaccording to the instructions described in “CoilCleaning” later in this section.

☐ Inspect the economizer outside air and return airdamper hinges and pins to ensure that all movingparts are securely mounted. Keep the blades cleanas necessary.

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☐ Manually rotate the condenser fans to ensure freemovement and check motor bearings for wear.Verify that all of the fan mounting hardware is tight.

☐ Check that all compressor crankcase heaters areworking. Repair any that are not working and wait 8hours before starting the associated refrigerationcircuit.

☐ Verify that all damper linkages move freely;lubricate with white grease, if necessary.

☐ Check supply fan motor bearings; repair or replacethe motor as necessary.

☐ With the unit running, check and record thefollowing:

– ambient temperature

– compressor oil level (each circuit)

– compressor suction and discharge pressures(each circuit)

– superheat and subcooling (each circuit)

Record this data on an “operator’s maintenance log”like the one shown in , p. 106. If the operatingpressures indicate a refrigerant shortage, measure thesystem superheat and system subcooling. Forguidelines, refer to .

IImmppoorrttaanntt:: Do not release refrigerant to theatmosphere! If adding or removingrefrigerant is required, the servicetechnician must comply with all federal,state and local laws. Refer to generalservice bulletin MSCU-SB-1 (latest edition).


RT-SVX063C-EN 81

Heating Season


Before completing the following checks, turn the unitOOFFFF and lock the main power disconnect switch open.

☐ Inspect the unit air filters. If necessary, clean orreplace them.

☐ Check supply fan motor bearings; repair or replacethe motor as necessary.

☐ Inspect both the main unit control panel and heatsection control box for loose electrical componentsand terminal connections, as well as damaged wireinsulation. Make any necessary repairs.

☐ Gas units only - Check the heat exchanger(s) for anycorrosion, cracks, or holes.

☐ Gas units only - Check the combustion air blowerand venting system for dirt or blockage fromanimals or insects. Clean as necessary.

☐ Gas units only - Check that burner, tubes, andorifices are free of debris or blockage from insects.

☐ Check gas piping for leaks.

☐ Gas units only - Open the main gas valve and applypower to the unit heating section; then initiate a“Heat” test using the startup procedure describedin “Staged, Modulating, and Ultra Modulating,” p.56.

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Coil CleaningRegular coil maintenance, including annual cleaningenhances the unit’s operating efficiency by minimizingthe following:

• Compressor head pressure and amperage draw

• Water carryover

• Fan brake horsepower

• Static pressure losses

At least once each year—or more often if the unit islocated in a “dirty” environment—clean the evaporatorcoils using the instructions outlined below. Be sure tofollow these instructions as closely as possible to avoiddamaging the coils.

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Refrigerant CoilsTo clean refrigerant coils, use a soft brush and asprayer.

For evaporator and reheat coil cleaners, contact thelocal Trane Parts Center for appropriate detergents.

1. Remove enough panels from the unit to gain safeaccess to coils.

2. Straighten any bent coil fins with a fin comb.

3. For accessible areas, remove loose dirt and debrisfrom both sides of the coil. For dual rowmicrochannel condenser coil applications, seekpressure coil wand extension through the localTrane Parts Center.

4. When cleaning evaporator and reheat coils, mix thedetergent with water according to themanufacturer’s instructions. If desired, heat thesolution to 150° F maximum to improve itscleansing capability.

IImmppoorrttaanntt:: DO NOT use any detergents withmicrochannel coils. Pressurized wateror air ONLY.

5. Pour the cleaning solution into the sprayer. If ahigh-pressure sprayer is used:

a. The minimum nozzle spray angle is 15 degrees.

b. Do not allow sprayer pressure to exceed 600 psi.


82 RT-SVX063C-EN

c. Spray the solution perpendicular (at 90 degrees)to the coil face.

d. For evaporator and reheat coils, maintain aminimum clearance of 6" between the sprayernozzle and the coil. For microchannel condensercoils, optimum clearance between the sprayernozzle and the microchannel coil is 1"-3”.

6. Spray the leaving-airflow side of the coil first; thenspray the opposite side of the coil. For evaporatorand reheat coils, allow the cleaning solution tostand on the coil for five minutes.

7. Rinse both sides of the coil with cool, clean water.

8. Inspect both sides of the coil; if it still appears to bedirty, repeat Steps 6 and 7.

9. Reinstall all of the components and panels removedin Step 1; then restore power to the unit.

10. For evaporator and reheat coils, use a fin comb tostraighten any coil fins which were inadvertentlybent during the cleaning process.

Scroll Compressor ReplacementThe compressor manifold system was purposelydesigned to provide proper oil return to eachcompressor. The refrigerant manifold system must notbe modified in any way.

NNoottee:: Altering the compressor manifold piping maycause oil return problems and compressorfailure.

Should a compressor replacement become necessaryand a suction line filter is to be installed, install it aminimum of 16 or 25 inches upstream of the oilseparator tee. See Figure 59, p. 82.

IImmppoorrttaanntt:: Do Not release refrigerant to theatmosphere! If adding or removingrefrigerant is required, the servicetechnician must comply with all Federal,State and local laws. Refer to generalservice bulletin MSCU-SB-1 (latest edition).

Figure 59. Suction line filter installation

16.0

Refrigeration System

WWAARRNNIINNGGRR--441100AA RReeffrriiggeerraanntt uunnddeerr HHiigghheerrPPrreessssuurree tthhaann RR--2222!!FFaaiilluurree ttoo uussee pprrooppeerr eeqquuiippmmeenntt oorr ccoommppoonneennttss aassddeessccrriibbeedd bbeellooww,, ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ffaaiilliinnggaanndd ppoossssiibbllyy eexxppllooddiinngg,, wwhhiicchh ccoouulldd rreessuulltt iinnddeeaatthh,, sseerriioouuss iinnjjuurryy,, oorr eeqquuiippmmeenntt ddaammaaggee..TThhee uunniittss ddeessccrriibbeedd iinn tthhiiss mmaannuuaall uussee RR--441100AArreeffrriiggeerraanntt wwhhiicchh ooppeerraatteess aatt hhiigghheerr pprreessssuurreesstthhaann RR--2222.. UUssee OONNLLYY RR--441100AA rraatteedd sseerrvviicceeeeqquuiippmmeenntt oorr ccoommppoonneennttss wwiitthh tthheessee uunniittss.. FFoorrssppeecciiffiicc hhaannddlliinngg ccoonncceerrnnss wwiitthh RR--441100AA,, pplleeaasseeccoonnttaacctt yyoouurr llooccaall TTrraannee rreepprreesseennttaattiivvee..

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Refrigerant Evacuation and Charging

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RT-SVX063C-EN 83

IImmppoorrttaanntt:: Do Not release refrigerant to theatmosphere! If adding or removingrefrigerant is required, the servicetechnician must comply with all federal,state, and local laws.

• To prevent cross contamination ofrefrigerants and oils, use only dedicatedR-410A service equipment.

• Disconnect unit power beforeevacuation and do not apply voltage tocompressor while under vacuum.Failure to follow these instructions willresult in compressor failure.

• Due to the presence of POE oil,minimize system open time. Do notexceed 1 hour.

• When recharging R-410A refrigerant, itshould be charged in the liquid state.

• The compressor should be off when theinitial refrigerant recharge is performed.

• Charging to the liquid line is requiredprior to starting the compressor tominimize the potential damage to thecompressor due to refrigerant in thecompressor oil sump at startup.

• If suction line charging is needed tocomplete the charging process, only doso with the compressor operating. Donot charge liquid refrigerant into thesuction line with the compressor off!This increases both the probability thatthe compressor will start withrefrigerant in the compressor oil sumpand the potential for compressordamage.

• Allow the crankcase heater to operate aminimum of 8 hours before starting theunit.

Charge StorageDue to the reduced capacity of the microchannelcondenser coil compared to the round tube plate finevaporator coil, pumping refrigerant into thecondenser coil to service the refrigerant system is nolonger an option.

Refrigeration Pressure CurvesPlease refer to “Pressure Curves,” p. 84 to locate thecurve that corresponds to the unit’s refrigerationsystem. This plot will indicate the approximatedischarge line pressure which should be observed at agiven outdoor ambient dry bulb temperature andsuction pressure when the unit has the correct amountof subcooling (indicating that it is properly charged.)

For meaningful use of the Pressure Curve charts,please refer to the following:

• Ensure outdoor ambient temperature is between65°F and 105°F, and that the air entering theevaporator is at least 40% Relative Humidity.

• Ensure all condenser fans are running at full speedfor the circuit you are testing, and that the Hot GasBypass Valve is fully closed (if applicable to yoursystem.)

• Verify that the Hot Gas Reheat Valve (if applicable)is set to 0% reheat.

• Pressures curves represent 100% compressorcapacity as displayed at unit touch pad. Allcompressors must be running and variable speedcompressors must not be speed limited due todischarge pressure or current. Note that dependingon unit size, variable speed compressor RPMtypically is less than 6000 RPM at 100% unitcompressor capacity.

Measuring Subcooling1. At the liquid line service port, measure the liquid

line pressure. Using an R-410A pressure/temperature chart, convert the pressure readinginto the corresponding saturated temperature.

2. Measure the actual liquid line temperature as closeto the liquid line service port as possible. To ensurean accurate reading, clean the line thoroughlywhere the temperature sensor will be attached.After securing the sensor to the line, insulate thesensor and line to isolate it from the ambient air.Use a thermocouple type probe for an accuratereading.

3. Determine the system subcooling by subtractingthe actual liquid line temperature (measured in step2) from the saturated liquid temperature (convertedin step 1.)


84 RT-SVX063C-EN

Pressure Curves

Figure 60. Pressure curve — 20 tons standard efficiency

200

250

300

350

400

450

500

100 110 120 130 140 150 160 170 180

Dis

charg

e Pre

ssure

, PSIG

Suction Pressure, PSIG

20T Standard Efficiency

95°F Ambient

85°F Ambient

75°F Ambient

65°F Ambient

105°F Ambient

90

NNootteess::

• CChhaarrggiinngg aatt AAHHRRII ffuullll llooaadd ddeessiiggnn ccoonnddiittiioonnss:: Suction pressure = 133 psig; Discharge pressure = 399 psig;Subcooling leaving outdoor coil = 15°F.

• CChhaarrggiinngg aatt ootthheerr ccoonnddiittiioonnss:: Subcooling range: 13-17°F.


RT-SVX063C-EN 85

Figure 61. Pressure curve — 20 tons high efficiency

200

250

300

350

400

450

500

90 100 110 120 130 140 150 160 170 180


Dis

char

ge

Pre

ssure

, PSIG

20T High Efficiency

95°F Ambient

85°F Ambient

75°F Ambient

65°F Ambient

105°F Ambient

NNootteess::



Figure 62. Pressure curve — 20 tons eFlex variable speed

200

250

300

350

400

450

500

90 100 110 120 130 140 150 160 170 180


20T eFlex Variable Speed

Dis

char

ge

Pre

ssure

, PSIG

95°F Ambient

85°F Ambient

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105°F Ambient

NNootteess::




86 RT-SVX063C-EN


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90 100 110 120 130 140 150 160 170 180

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65°F Ambient

105°F Ambient

NNootteess::




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Dis

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105°F Ambient

NNootteess::




RT-SVX063C-EN 87


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88 RT-SVX063C-EN


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30T High Efficiency

NNootteess::




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RT-SVX063C-EN 89


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NNootteess::




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40T High Efficiency

NNootteess::




90 RT-SVX063C-EN


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40T eFlex Variable Speed - circuit 1 only(Use 40T Standard Capacity for circuit 2)

95°F Ambient

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NNootteess::




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RT-SVX063C-EN 91


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92 RT-SVX063C-EN


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NNootteess::




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RT-SVX063C-EN 93



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94 RT-SVX063C-EN


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NNootteess::




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RT-SVX063C-EN 95


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NNootteess::




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70T High Efficiency

NNootteess::




96 RT-SVX063C-EN


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NNootteess::

• CChhaarrggiinngg aatt AAHHRRII ffuullll llooaadd ddeessiiggnn ccoonnddiittiioonnss:: Suction pressure = 144 psig; Discharge pressure = 416 psig;Subcooling leaving outdoor coil = 21F.



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RT-SVX063C-EN 97


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75T High Efficiency

NNootteess::




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NNootteess::




98 RT-SVX063C-EN

Compressor OilRefer to Table 43, p. 99 for the appropriate scrollcompressor oil charge. Remove and measure oil fromany compressor replaced. Adjust oil in replacementcompressor to prevent excessive oil in system.Anytime a compressor is replaced, the oil for eachcompressor within the manifold must be replaced.

The scroll compressor uses Trane OIL00079 (one quartcontainer) or OIL00080 (one gallon container) withoutsubstitution. Discoloration of the oil indicates that anabnormal condition has occurred. If the oil is dark andsmells burnt, it has overheated because of thefollowing:

• Compressor operating at extremely highcondensing temperatures

• High superheat

• A compressor mechanical failure

• Occurrence of a motor burnout.

If a motor burnout is suspected, use an acid test kit(KIT15496) to check the condition of the oil. Test resultswill indicate an acid level has exceeded the limit if aburnout occurred. Oil test kits must be used for POE oil(OIL00079 for a quart container or OIL00080 for a galloncontainer) to determine whether the oil is acidic. If amotor burnout has occurred, change the oil in bothcompressors in a tandem set.

CSHD CompressorsCSHD compressors include a lower shell shraederfitting that can be used to reduce the sump oil levelbelow the bottom of the equalizer line Rotolock fitting.This fitting does not allow removal of all the sump oil,but just enough to prevent oil spills when the equalizerline Rotolock fitting is removed.

Prior to reinstalling the oil equalizer line to eachcompressor, replace the PTFE gasket on the oilequalizer Rotolock fitting on each compressor. See , p.98. Torque Rotolock nut to the values listed in Table44, p. 99.

Charge the new oil into the Schrader valve on the shellof the compressor. Due to the moisture absorptionproperties of POE oil, do not use POE oil from apreviously opened container. Also discard any excessoil from the container that is not used.

Figure 87. PTFE gasket

CSHW and CSHN CompressorsCSHW and CSHN compressors have an oil drain valvewhich allows the oil to be drained out of thecompressor. After the refrigerant has been recovered,pressurize the system with nitrogen to help remove theoil from the compressor.

Charge the new oil into the Schrader valve or oil drainvalve on the shell of the compressor. Due to themoisture absorption properties of POE oil, do not usePOE oil from a previously opened container. Alsodiscard any excess oil from the container that is notused.

Figure 88. CSHN

Oil equalizer Rotolock connection fitting

¼ Schrader port

Oil drain valve

VZH Variable Speed CompressorsRefer to “PTFE gasket,” p. 98 for VZH117 oil removalprocedures.

VZH variable speed compressors include the additionof an oil injection solenoid valve (2L11) to providesupplemental oil flow from an internal gear pump tothe scrolls. The solenoid is de-energized at lowcompressor speeds to allow supplemental oil flow andbetter seal scrolls. The solenoid is energized at high


RT-SVX063C-EN 99

compressor speeds to stop supplemental lubrication.This prevents excessive oil circulation to the system.The solenoid is controlled by the inverter and switchesat 3900 RPM for the VZH088, 3300 RPM for the VZH117,and 2700 RPM for the VZH170.

The 24 VAC solenoid coil operation can be checked onone of the solenoid leads with a clamp on amp meter.Above 3300 RPM (VZH117) /2700 RPM (VZH170), theamp meter should read about 0.5 amps to indicatesupplemental flow has been stopped.

Figure 89. Oil injection solenoid valve

Oil injection solenoid

Table 43. Oil charge per compressor

Compressor Pints

CSHW058 3.2

CSHW089 3.8

CSHD103 5.0

CSHD075-092 6.3

CSHD105-161, VZH088 7.0

CSHD175-183, VZH117 7.6

CSHN176-315, VZH170 14.2

CSHN374 15.2

Table 44. Torque requirements for rotolock fittings

CSHD* VZH088 and VZH117 64 +/- 12 ft-lbs

CSHN* and VZH170 100 +/- 10 ft-lbs

NNoottee:: Always replace gasket when reassembling oilequalizer lines.

Electrical PhasingIf it becomes necessary to replace a compressor, it isvery important to review and follow the ElectricalPhasing procedure described in the startup procedureof the IOM.

If the compressors are allowed to run backward foreven a very short period of time, internal compressordamage may occur and compressor life may bereduced. If allowed to run backwards for an extendedperiod of time the motor windings can overheat andcause the motor winding thermostats to open. This willcause a “compressor trip” diagnostic and stop thecompressor

If a scroll compressor is rotating backwards, it will notpump and a loud rattling sound can be observed.Check the electrical phasing at the compressor terminalbox. If the phasing is correct, before condemning thecompressor, interchange any two leads to check theinternal motor phasing.

Variable Speed Manifolded with FixedSpeed CompressorsSome models use an eFlex™ variable speedcompressor manifolded with a fixed speedcompressor. It uses a patented manifold design that isdifferent from fixed speed tandems as follows:

1. The variable speed compressor is always first onand located upstream in the suction line in position1A;

2. A nozzle in the suction tee, directly upstream of themanifold set, separates suction oil return to theupstream variable speed compressor. It alsoprovides a sump pressure difference to moveexcess oil from the variable speed to the fixedspeed compressor when both compressors arerunning. The nozzle is specifically sized for thisvariable speed manifold compressor combinationand must not be removed.

Suction restrictors are not used, and a smaller 3/8"OD oil equalizer line is used to help maintain thesump pressure differential.

Figure 90. eFlex variable speed tandem

Fixedspeed

compressor

Variablespeed

compressor

Combinedsuctionflow

Nozzle

Inflow

Precision Suction RestrictorTandem manifold compressors that have unequalcapacity sizes use a precision suction restrictor tobalance the oil levels in the compressors (see figure


100 RT-SVX063C-EN

below). This restrictor is placed in the smaller capacitycompressor. When replacing this compressor, it isimperative that the proper restrictor is selected fromthose provided with the replacement compressor.

When the compressors are restarted, verify that correctoil levels are obtained with both compressorsoperating.

Figure 91. Precision suction restrictor

CompressorSuction

SuctionTube

Suction Restrictor

VFD Programming Parameters (Supply/Condenser for Low Ambient Option)Units shipped with variable frequency drives (VFD) arepreset and run tested at the factory. If a problem with aVFD occurs, ensure that the programmed parameterslisted in Table 45, p. 101 and Table 46, p. 102 forsupply fan VFDs and Table 47, p. 103 for condenser fanVFDs (if low ambient option is installed), have been setbefore replacing the drive.

VVeerriiffyy PPaarraammeetteerrss

Verify parameter 1-23 is set to motor nameplatefrequency.

1. To check parameter 1-23 press the Main Menubutton twice (press the Back button if the mainmenu does not display)

2. Scroll down to Load & Motor, press OK

3. Select 1-2, press OK

4. Press down until parameter 1-23 is displayed.Parameter 1-23 can then be modified by pressingOK and pressing the Up and Down buttons.

5. When the desired selection has been made, pressOK .

Should replacing the VFD become necessary, thereplacement is not configured with all of Trane'soperating parameters. The VFD must be programmedbefore attempting to operate the unit.

To verify and/or program a VFD, use the followingsteps:

1. At the unit, turn the 115 volt control circuit switch tothe Off position.

IImmppoorrttaanntt:: HIGH VOLTAGE IS PRESENT AT TERMINALBLOCK OR OPTIONAL UNIT DISCONNECTSWITCH.

2. To modify parameters:

a. Press Main Menu twice (press Back if the mainmenu does not display)

b. Use the Up and Down buttons to find theparameter menu group (first part of parameternumber)

c. Press OK

d. Use the Up and Down buttons to select thecorrect parameter sub-group (first digit ofsecond part of parameter number)

e. Press OK

f. Use the Up and Down buttons to select thespecific parameter

g. Press OK

h. To move to a different digit within a parametersetting, use the Left and Right buttons(Highlighted area indicates digit selected forchange)

i. Use the Up and Down buttons to adjust the digit

j. Press Cancel to disregard change, or press OKto accept change and enter the new setting

3. Repeat Table 45, p. 101 and Table 46, p. 102 forsupply fan VFDs and Table 47, p. 103 for condenserfan VFDs (if low ambient option is installed).

4. To reset all programming parameters back to thefactory defaults:

a. Go to parameter 14-22 Operation Mode

b. Press OK

c. Select Initialization

d. Press OK

e. Cut off the mains supply and wait until thedisplay turns off.

f. Reconnect the mains supply - the frequencyconverter is now reset.

g. Ensure parameter 14-22 Operation Mode hasreverted back to “Normal Operation”.


RT-SVX063C-EN 101

NNootteess::

• Item 9 resets the drive to the defaultfactory settings. The programparameters listed in Table 45, p. 101and Table 46, p. 102 for supply fanVFDs and Table 47, p. 103 forcondenser fan VFDs (if low ambientoption is installed), will need to beverified or changed as described inItem8.

• Some of the parameters listed in thetable are motor and applicationspecific. Due to various motors andefficiencies available, use only thevalues stamped on the specific motornameplate.

• A backup copy of the current setupmay be saved to the LCP before

changing parameters or resetting thedrive . See LCP Copy in the VFDOperating Instructions for details.

5. Follow the start-up procedures for supply fan .

6. After verifying that the VFD(s) are operatingproperly, press the STOP key at the HumanInterface Module to stop the unit operation.

7. Follow the applicable steps in the “Final UnitCheckout” section to return the unit to its normaloperating mode.

If a problem with a VFD occurs, ensure that theprogrammed parameters listed for supply andcondenser fan VFDs have been set before replacing thedriveTable 45, p. 101 and Table 46, p. 102 for supplyfan VFDs and Table 47, p. 103 for condenser fan VFDs(if low ambient option is installed), .

Table 45. Supply fan VFD programming parameters

ID Description Parameter Setting

0-01 Language [0] English US

0-03 Regional Settings [1] North American

0-06 Grid Type

Set to applicable unit power supply[102] 200-240V/60Hz for 208 & 230V/60Hz units[122] 440-480V/60Hz for 460V/60Hz units[132] 525-600V/60Hz for 575V/60Hz units

[12] 380-440V/50Hz for 380 & 415V/50Hz supplyFor IT Grid (no ground connections) or Corner grounded Delta power supplysystems, the applicable voltage/Hz and IT-Grid or Delta should be selected.

0-40 [Hand on] Key on LCP [0] Disabled

1-20 Motor Power Per Motor Nameplate HP

1-22 Motor Voltage (V) Per Motor Nameplate Voltage

1-23 Motor Frequency (Hz) Per Motor Nameplate Frequency

1-24 Motor Current (A) Per Motor Nameplate FLA

1-25 Nominal Speed (RPM) Per Motor Nameplate Rated Speed

1-73 Flying Start [1] Enabled

1-90 Motor Thermal Protection [4] ETR Trip1

2-00 DC Hold/Preheat Current (%) [0] 0%

2-01 DC Brake Current (%) [0] 0%

2-04 DC Brake Cut In Speed (Hz) [10] 10Hz

3-02 Minimum Reference (Hz) Per Unit Nameplate - Evap Fan VFD Min Hz

3-03 Maximum Reference (Hz) Per Unit Nameplate - Evap Fan VFD Max Hz

3-15 Reference 1 Source [1] Local bus reference

3-16 Reference 2 Source [0] No function


3-41 Ramp 1 Ramp Up Time (s) [30] 30s


102 RT-SVX063C-EN

Table 45. Supply fan VFD programming parameters (continued)

ID Description Parameter Setting

3-42 Ramp 1 Ramp Down Time (s) [30] 30s

4-12 Motor Speed Low Limit (Hz) [20] 20Hz for 4 Pole[18] 18Hz for 6 Pole

4-14 Motor Speed High Limit (Hz) See Table 18 for value

4-18 Current Limit (%) [100] 100%

4-19 Max Output Frequency (Hz) [120] 120Hz

5-10 Terminal 18 Digital Input [0] No Operation



8-30 Protocol [2] Modbus RTU

8-31 AddressSet address per unit component location diagram

[7] for 4TB1[8] for 4TB2

8-32 Baud Rate [7] 115200 Baud

8-33 Parity / Stop Bits [0] Even Parity, 1 Stop Bits

8-01 Control Site [2] Controlword only

8-03 Control Timeout Time (s) [15] 15s

8-04 Control Timeout Function [2] Stop

14-01 Switching Frequency (kHz) [8] 8.0 KHz

14-11 Mains Voltage Fault level

Set based on motor nameplate voltage[177] for 208V motor[196] for 230V motor[391] for 460V motor[489] for 575V motor

14-12 Function at Main Imbalance [3] Derate

14-20 Reset Mode [5] Automatic reset x 5

14-50 RFI Filter [0] Off

14-61 Function at Inverter Overload [1] Derate

Table 46. Value for Parameter 4-14 (Motor Speed High Limit (Hz)

Digit# 3,4,5Unit Tonnage

Digit# 15Fan Size

Digit# 16 = 1(4 Pole)

Digit# 16 =2(6 Pole)

F20,F25,F30

A,B [119] [120]

E,F [92] [120]

G [82] [120]

F40,F50,F55

C [100] [120]

F [92] [120]

J,K [75] [114]


RT-SVX063C-EN 103

Table 46. Value for Parameter 4-14 (Motor Speed High Limit (Hz) (continued)

Digit# 3,4,5Unit Tonnage

Digit# 15Fan Size

Digit# 16 = 1(4 Pole)

Digit# 16 =2(6 Pole)

F60,F70,F75H [82] [120]

M [68] [103]

Table 47. Condenser fan VFD programming parameters

ID Descrtiption Parameter Setting

0-01 language [0] English US

0-03 Regional Settings [1] North American

0-06 Grid Type

Set to applicable unit power supply[102] 200-240V/60Hz for 208 & 230V/60Hz units[122] 440-480V/60Hz for 460V/60Hz units[132] 525-600V/60Hz for 575V/60Hz units

[12] 380-440V/50Hz for 380 & 415V/50Hz supplyFor IT Grid (no ground connections) or Corner grounded Delta power supplysystems, the applicable voltage/Hz and IT-Grid or Delta should be selected.

0-40 [Hand on] Key on LCP [0] Disabled

1-20 Motor Power (kW/HP)Per Motor Nameplate KW- HP

[7] 0.75kW - 1.0HP[8] 1.1kW - 1.5HP

1-22 Motor Voltage (V) [208] 208V [230] 230V [460] 460V [575] 575V

1-23 Motor Frequency (Hz) [60] 60 Hz

1-24 Motor Current (A)1-20=[7] [4.1] 4.1A [4.1] 4.1A [1.8] 1.8A [1.4] 1.4A

1-20=[8] [5.4] 5.4A [5.4] 5.4A [2.7] 2.7A [2.05] 2.05A

1-25Motor Nominal Speed

(RPM) [1140] 1140RPM

1-73 Flying Start [1] Enabled

1-82Min Speed for function at

Stop (Hz) 0.1

1-90 Motor Thermal Protection [4] ETR Trip1

2-00DC Hold/Preheat Current

(%) [0] 0%

2-02 DC Braking time (s) [0] 0s

2-10 Brake Function [2] AC Brake is Active

3-03 Maximum Reference (Hz) [60] 60Hz

3-15 Reference 1 Source [1] Local bus reference



3-41 Ramp 1 Ramp Up Time (s) [10] 10s

3-42Ramp 1 Ramp Down Time

(s) [10] 10s

4-10 Motor Speed Direction [0] Clockwise

4-12 Motor Speed Low Limit (Hz) [6] 6Hz

4-14Motor Speed High Limit

(Hz) [60] 60Hz

4-18 Current Limit (%) [140] 140% for 1HP Motor[100] 100% for 1.5HP Motor





104 RT-SVX063C-EN

Table 47. Condenser fan VFD programming parameters (continued)

ID Descrtiption Parameter Setting

8-30 Protocol [2] Modbus RTU

8-31 AddressSet address per unit component location diagram

[5] for 1TB4[6] for 1TB5

8-32 Baud Rate [7] 115200 Baud

8-33 Parity / Stop Bits [0] Even Parity, 1 Stop Bits

8-01 Control Site [2] Controlword only

8-03 Control Timeout Time (s) [15] 15s

8-04 Control Timeout Function [2] Stop

14-01 Switching Frequency (kHz) [5] 5.0 kHz

14-11Mains Voltage Fault level

(V)

Set based on motor nameplate voltage[177] for 208V motor[196] for 230V motor[391] for 460V motor[489] for 575V motor

14-12 Function at Main Imbalance [3] Derate

14-20 Reset Mode [3] Automatic reset x 3

14-21 Automatic Restart Time [5] 5

14-50 RFI Filter [0] Off

14-61 Function at InverterOverload

[1] Derate

eFlex™ Compressor VFD ProgrammingParameters

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A factory-shipped TRV200 should not be modified in

the field. It is specifically matched to the compressor.

Should replacing a VFD become necessary, onlyparameter 4-18 Current Limit requires setting on theVFD, refer to Table 48, p. 104. All other parametersbeside 4-18 Current Limit will be appropriately set infield replacement VFDs. Do not use any other type orbrand of VFD when replacing the VFD.

NNoottee:: Failure to set parameter 4-18 Current Limit on afield replacement VFD will not allow thecompressor to start and result in A18 Start Failedor A49 Speed Limit on the VFD.

To verify and/or set parameter 4-18 in the CompressorVFD:

1. Press QQuuiicckk MMeennuu.

2. Press MMyy PPeerrssoonnaall MMeennuu.

3. Navigate through the options using the UUpp andDDoowwnn arrows to find [4-18 Current Limit].

4. Adjust the current limit percentage value per unittonnage and voltage as shown in Table 48, p. 104.

5. Press [OK].

Table 48. TRV200 Drive Current Limit (Parameter 4-18)

UnitTonnage 200V 230V 460V 575V

20–25 80% 70% 75% 80%

30–40 90% 78% 84% 83%

50–55 105% 93% 86% 88%


RT-SVX063C-EN 105

Table 48. TRV200 Drive Current Limit (Parameter 4-18) (continued)

UnitTonnage 200V 230V 460V 575V

60–70 107% 93% 95% 94%

75 105% 93% 86% 88%

Microchannel Condenser CoilRepair and ReplacementIf microchannel condenser coil repair or replacement isrequired, refer to General Service Bulletin RT-SVB83*-EN for further details.

Fall Restraint

WWAARRNNIINNGGFFaalllliinngg OOffff EEqquuiippmmeenntt!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..TThhiiss uunniitt iiss bbuuiilltt wwiitthh ffaallll rreessttrraaiinntt sslloottss llooccaatteedd oonnuunniitt ttoopp tthhaatt MMUUSSTT bbee uusseedd dduurriinngg sseerrvviicciinngg..TThheessee sslloottss aarree ttoo bbee uusseedd wwiitthh ffaallll rreessttrraaiinntteeqquuiippmmeenntt tthhaatt wwiillll nnoott aallllooww aann iinnddiivviidduuaall ttoorreeaacchh tthhee uunniitt eeddggee.. HHoowweevveerr ssuucchh eeqquuiippmmeenntt wwiillllNNOOTT pprreevveenntt ffaalllliinngg ttoo tthhee ggrroouunndd,, ffoorr tthheeyy aarreeNNOOTT ddeessiiggnneedd ttoo wwiitthhssttaanndd tthhee ffoorrccee ooff aa ffaalllliinnggiinnddiivviidduuaall..

The fall restraint is located approximately 3 feet fromthe unit edge.

Figure 92. Fall restraint

Fall Restraint


106 RT-SVX063C-EN

Final ProcessRecord the unit data in the blanks provided.


RT-SVX063C-EN 107

Table49.

Sam

plemaintenance

log

Date

Current

Ambient

TempF/

C

RefrigerantCircuit#1

RefrigerantCircuit#2

Com

pr.

OilLevel

Suct.

Press.

Psig/

kPa

Disch.

Press

Psig/

kPa

Liquid

Press

Psig/

kPa

Super-

heatF/C

Sub-

coolF/C

Com

pr.

OilLevel

Suct.

Press.

Psig/

kPa

Disch.

Press

Psig/

kPa

Liquid

Press

Psig/

kPa

Super-

heatF/C

Sub-

coolF/C

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low


108 RT-SVX063C-EN

Wiring Diagrams

Table 50. Wiring diagrammatrix

Number Description

Power

1213-2567 POWER SCHEMATIC, 20T-75T - AIRFLOWAND CONTROLS

1213-2568 POWER SCHEMATIC, 20T-75T - AIRFLOWAND CONTROLS W/ VFD BYPASS

1213-2570 POWER SCHEMATIC, 40T-75T - REFRIGERATION

1213-2571 POWER SCHEMATIC, 40T-75T - REFRIGERATIONWITH COMPRESSOR VFD

1213-2572 POWER SCHEMATIC, 40T-75T - REFRIGERATIONWITH COND FAN VFD

1213-2573 POWER SCHEMATIC, 40T-75T - REFRIGERATIONWITH COMPRESSOR AND COND FAN VFD

1213-2575 POWER SCHEMATIC, 20T-30T - REFRIGERATION

1213-2576 POWER SCHEMATIC, 20T-30T - REFRIGERATIONWITH COMPRESSOR VFD

1213-2577 POWER SCHEMATIC, 20T-30T - REFRIGERATIONWITH COND FAN VFD

1213-2578 POWER SCHEMATIC, 20T-30T - REFRIGERATIONWITH COMPRESSOR AND COND FAN VFD

Controls

1213-3319 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION & CUSTOMER CONNECTIONS

1213-2582 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMS

1213-2583 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMSWITH VARIABLE SPEED COMPRESSOR

1213-2584 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMSWITH VARIABLE SPEED COND FAN

1213-2585 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMSWITH VSC AND VCF

1213-2641 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMS

1213-2642 CONTROLS SCHEMATIC, 20T-75T - REFRIGERATION SYSTEMSWITH VARIABLE SPEED COND FAN

1213-2590 CONTROLS SCHEMATIC, 20T-75T - RETURN SECTION 1 OF 2

1213-2649 CONTROLS SCHEMATIC, 20T-75T - RETURN SECTION 2 OF 2

Gas Heat

1213-2827 SCHEMATIC/LAYOUT - STAGED GAS HEAT - 250 & 350 MBH

1213-2828 SCHEMATIC/LAYOUT - STAGED GAS HEAT - 500 MBH

1213-2829 SCHEMATIC/LAYOUT - STAGED GAS HEAT - 850 MBH

1213-2830 SCHEMATIC/LAYOUT - MODULATING GAS HEAT - 250, 350 MBH STD

1213-2831 SCHEMATIC/LAYOUT - MODULATING GAS HEAT - 250 & 350 MBH ULTRA/500 MBH STD

1213-2832 SCHEMATIC/LAYOUT - MODULATING GAS HEAT - 500 MBH ULTRA

1213-2833 SCHEMATIC/LAYOUT - MODULATING GAS HEAT - 850 MBH STD/ULTRA

Electric Heat

1213-2835 SCHEMATIC - ELECTRIC HEAT - 30KW - 480V/600V



1213-2838 SCHEMATIC - ELECTRIC HEAT - 60KW - 208V/240V, 120KW & 150KW - 480V/600V


1213-2840 SCHEMATIC - ELECTRIC HEAT - 90KW - 208V/240V, 190KW - 480V/600V


Component Layout - Control Panels

1213-3320 COMPONENT LAYOUT - UNIT CONTROLS PANEL

1213-2873 COMPONENT LAYOUT - MAIN CONTROL PANEL

1213-2645 COMPONENT LAYOUT - SUPPLY FAN VFD PANEL

1213-2646 COMPONENT LAYOUT - RETURN CONTROLS PANEL

RT-SVX063C-EN 109

Table 50. Wiring diagrammatrix (continued)

Number Description

Unit Device Locations

1213-2587 UNIT DEVICE LOCATIONS - UNIT SENSORS

Component Layout - Electric Heat

1213-2852 COMPONENT LAYOUT - ELECTRIC HEAT - 30 KW - ALL VOLTAGE, 60 KW & 90 KW - 460V/575V

1213-2855 COMPONENT LAYOUT - ELECTRIC HEAT - 60KW & 90KW - 200V/230V, 120KW - ALL VOLTAGES, 150KW &190KW - 460V/575V

Expansion Module

1213-3321 SCHEMATIC - EXPANSION MODULE

WWiirriinngg DDiiaaggrraammss

110 RT-SVX063C-EN

Warranty and Liability ClauseCOMMERCIAL EQUIPMENT - 20TONS AND LARGER ANDRELATED ACCESSORIESPRODUCTS COVERED - This warranty* is extended byTrane Inc. and applies only to commercial equipmentrated 20 Tons and larger and related accessories.

The Company warrants for a period of 12 months frominitial startup or 18 months from date of shipment,whichever is less, that the Company products coveredby this order (1) are free from defects in material andworkmanship and (2) have the capacities and ratingsset forth in the Company’s catalogs and bulletins,provided that no warranty is made against corrosion,erosion or deterioration. The Company’s obligationsand liabilities under this warranty are limited tofurnishing f.o.b. factory or warehouse at Companydesignated shipping point, freight allowed to Buyer’scity (or port of export for shipment outside theconterminous United States) replacement equipment(or at the option of the Company parts therefore) for allCompany products not conforming to this warrantyand which have been returned to the manufacturer.The Company shall not be obligated to pay for the costof lost refrigerant. No liability whatever shall attach tothe Company until said products have been paid forand then said liability shall be limited to the purchaseprice of the equipment shown to be defective.

The Company makes certain further warrantyprotection available on an optional extra-cost basis.

Any further warranty must be in writing, signed by anofficer of the Company.

The warranty and liability set forth herein are in lieu ofall other warranties and liabilities, whether in contractor in negligence, express or implied, in law or in fact,including implied warranties of merchantability andfitness for particular use. In no event shall theCompany be liable for any incidental or consequentialdamages.

THE WARRANTY AND LIABILITY SET FORTH HEREINARE IN LIEU OF ALL OTHER WARRANTIES ANDLIABILITIES, WHETHER IN CONTRACT OR INNEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR INFACT, INCLUDING IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR PARTICULARUSE, IN NO EVENT SHALL WARRANTOR BE LIABLEFOR ANY INCIDENTAL OR CONSEQUENTIALDAMAGES.

Manager - Product Service

Trane

Clarksville, Tn 37040-1008

PW-215-2688

*A 10 year limited warranty is provided on all stainlesssteel Gas Heat Exchangers.

*Optional Extended Warranties are available forcompressors and heat exchangers of CombinationGas-Electric Air Conditioning Units.

*A 5 year limited warranty is provided on optional 0-100% Economizer

RT-SVX063C-EN 111

NNootteess

Ingersoll Rand (NYSE: IR) advances the quality of life by creating comfortable, sustainable and efficientenvironments. Our people and our family of brands — including Club Car®, Ingersoll Rand®, Thermo King® andTrane® —work together to enhance the quality and comfort of air in homes and buildings; transport and protectfood and perishables; and increase industrial productivity and efficiency. We are a global business committed to aworld of sustainable progress and enduring results.

ingersollrand.com

Ingersoll Rand has a policy of continuous product and product data improvements and reserves the right to change design and specificationswithout notice.We are committed to using environmentally conscious print practices.

RT-SVX063C-EN 27 Sep 2019

Supersedes RT-SVX063B-EN (February 2019) ©2019 Ingersoll Rand

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