installation, operation, and maintenance · all varitrane vav models with pneumatic, electronic,...

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

VariTrane™

Single-Duct and Fan-Powered Units

Installation, Operation,

and Maintenance

All VariTrane VAV models with pneumatic, electronic, DDC controls, and diffusers.

VCCF04 - 24

VCEF04 - 24

VCWF04 - 24

VAV-SVX08E-ENSeptember 2014

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

Important Environmental Concerns

Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs such as HCFCs and HFCs.

Important Responsible Refrigerant Practices

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

The three types of advisories are defined as follows:

WARNINGIndicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTIONsIndicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

NOTICE Indicates a situation that could result in equipment or property-damage only accidents.

WARNING

Proper Field Wiring and Grounding Required!

Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes.

WARNING

Personal Protective Equipment (PPE) Required!

Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.

• Before installing/servicing this unit, technicians

MUST put on all PPE required for the work being

undertaken (Examples; cut resistant gloves/sleeves,

butyl gloves, safety glasses, hard hat/bump cap, fall

protection, electrical PPE and arc flash clothing).

ALWAYS refer to appropriate Material Safety Data

Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA

guidelines for proper PPE.

• When working with or around hazardous chemicals,

ALWAYS refer to the appropriate MSDS/SDS and

OSHA/GHS (Global Harmonized System of

Classification and Labelling of Chemicals) guidelines

for information on allowable personal exposure

levels, proper respiratory protection and handling

instructions.

• If there is a risk of energized electrical contact, arc, or

flash, technicians MUST put on all PPE in accordance

with OSHA, NFPA 70E, or other country-specific

requirements for arc flash protection, PRIOR to

servicing the unit. NEVER PERFORM ANY

SWITCHING, DISCONNECTING, OR VOLTAGE

TESTING WITHOUT PROPER ELECTRICAL PPE AND

ARC FLASH CLOTHING. ENSURE ELECTRICAL

METERS AND EQUIPMENT ARE PROPERLY RATED

FOR INTENDED VOLTAGE.

Failure to follow instructions could result in death or serious injury.

© 2014 Trane All rights reserved VAV-SVX08E-EN

Introduction

Introduction

This manual describes the installation of VariTrane™ VAV units with recommended wiring, piping, and mounting of single-duct, dual-duct, fan-powered, low-height terminal units, and diffusers.

See also the following reference documents:

• BAS-SVX40A-EN —Wireless Comm IOM

• BAS-SVX55A-EN — Wireless Comm Network Design Best Practices Guide

Receiving and Handling

VariTrane units are shipped completely assembled with the exceptions of optional attenuators for fan-powered units and accessories.

Upon receiving the equipment, complete the following:

• Locate the nameplate and refer to the model and sales order number and check that the correct units have been delivered.

• Inspect the control enclosures and air valve casing for dents or punctures.

• Verify that all options have been included, such as filters, controls, heating coils, water valves, etc. Also check that the unit voltages agree with the building parameters.

• Manually rotate fan (if applicable) to assure that there are no obstructions within the housing.

• Claims for in-transit damage must be filed immediately with the delivery carrier.

• For hot water re-heat units, check the coil fins and make sure that coils are not damaged.

• Locate and verify that the correct zone sensors are with the order. These will be marked with an orange “Accessories Enclosed” label. Store in a secure location until needed. Accessories lost at the job site are NOT covered by Trane’s warranty.

• If a discrepancy occurs between what was ordered and what is received, contact you local Trane representative immediately.

• Read appropriate section in this manual for installation procedures prior to starting equipment.

Upon receiving the equipment, please inspect each unit and components for external or internal damage. Refer to the bill of lading to insure all equipment and accessories have been received. Contact your local Trane sales representative and notify the trucking company immediately of any short ship or damaged equipment.

Copyright

This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

Trademarks

Trane, VariTrane and the Trane logo are trademarks or registered trademarks of Trane in the United States and other countries. Trane is a business of Ingersoll Rand. All trademarks referenced in this document are the trademarks of their respective owners.

LonTalk is a registered trademarks of Echelon Corporation.

Revision History

VAV-SVX08E-EN (16 Sep 2014)

Updated for universal mount project.

VAV-SVX08D-EN (11 Jul 2013)

Updated model number for Sinro valve.

VAV-SVX08D-EN (27 Jun 2013)

Added Bottom Access with Cam Lock configuration and stand alone control information for UCM 4.2, VV550 LonTalk, UC400, UC210 and WCI.

WARNING

Fiberglass Wool!

Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. Glass wool fibers could result in respiratory, skin or eye irritation.

VAV-SVX08E-EN 3

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings, Cautions, and Notices . . . . . . . . 2

Important Environmental Concerns . . . . . 2

Important Responsible Refrigerant Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Receiving and Handling . . . . . . . . . . . . . . . 3

Model Number Descriptions . . . . . . . . . . . . . . 5

Single-Duct Units . . . . . . . . . . . . . . . . . . . . . . 5

Dual-Duct Units . . . . . . . . . . . . . . . . . . . . . . . 8

Fan-Powered Units . . . . . . . . . . . . . . . . . . . . 9

Unit Information . . . . . . . . . . . . . . . . . . . . . . . . 11

Single-Duct Units . . . . . . . . . . . . . . . . . . . 11

Dual-Duct Units . . . . . . . . . . . . . . . . . . . . 11

Fan-Powered and Fan-Powered Low-Height Units . . . . . . . . . . . . . . . . . . . 12

Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . 13

Unit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

(SCR) Motor Speed Control Adjustment Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 28

Electrically Commutated Motor (ECM) . . 28

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . 42

Heaters with Contactors . . . . . . . . . . . . . . . 42

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Installation of Diffusers . . . . . . . . . . . . . . . . . . 53

General . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

T-Bar Ceiling . . . . . . . . . . . . . . . . . . . . . . . 53

Concealed Spline Ceiling . . . . . . . . . . . . . 53

Drywall/Plaster Ceiling . . . . . . . . . . . . . . . 54

4 VAV-SVX08E-EN

Model Number Descriptions

Single-Duct Units

Digit 1, 2 — Unit TypeVC = VariTrane Single Duct

Digit 3—ReheatC = Cooling Only E = Electric Heat W = Hot Water Heat

Digit 4—Development SequenceF = Sixth

Digit 5, 6—Primary Air Valve04 = 4" inlet (225 cfm) 05 = 5" inlet (350 cfm) 06 = 6" inlet (500 cfm) 08 = 8" inlet (900 cfm) 10 = 10" inlet (1400 cfm) 12 = 12" inlet (2000 cfm) 14 = 14" inlet (3000 cfm) 16 = 16" inlet (4000 cfm) 24 = 24" x 16" inlet (8000 cfm)

Digit 7, 8, 9—Not Used000= N/A

Digit 10, 11—Design Sequence** = Factory Assigned

Digit 12, 13, 14, 15—ControlsDD00 Trane Actuator Only and

Enclosure DD01= UCM4 Cooling Only Control DD02= UCM4 N.C. On/Off Hot Water DD03= UCM4 Prop. Hot Water DD04= UCM4 Staged On/Off E-Heat DD05= UCM4 Pulse Width MOD E-Heat DD07= UCM4 N.O. On/Off Hot Water DD11= VV550 DDC Controller - Cooling

Only DD12= VV550 DDC Ctrl to operate N.C.

On/Off water valve DD13= VV550 DDC Ctrl to operate Prop

water valve DD14= VV550 DDC Ctrl - On/Off Electric

Heat DD15= VV550 DDC Ctrl w/Pulse Width

Modulation DD16= VV550 DDC Controller -

Ventilation Flow DD17= VV550 DDC Ctrl to operate N.O.

On/Off Water Valve DD19= VV550 DDC Controller with Flow

Tracking DD20= VV550 DDC Vent Flow cntrl to

operate N.C. water valve DD21= VV550 DDC - Vent Flow w/ On/Off

Elec Heat DD22= VV550 DDC Vent Flow cntrl to

operate prop water valve DD23= VV550 DDC- Basic plus- Local

(Electric heat- PWM) Remote (Staged EH)

DD24= VV550 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.C. 2 position)

DD25= VV550 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.O. 2 position)

DD26= VV550 DDC-Basic plus- Local

(Water heat- N.O. 2-position) Remote (Water- Modulating)

DD27= VV550 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- Modulating)

DD28= VV550 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.O. 2-position)

DD29= VV550 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- NC 2-position)

DD30= VV550 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.C. 2-position)

DD31= VV550 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- N.O. 2-position)

DD32= VV550 DDC-Basic plus- Local (Electric heat- Staged) Remote (Staged EH)

DD33= VV550 DDC Vent Flow cntrl to operate N.O. On/Off water valve

DD41= UC400 DDC-Basic (No water or electric heat)

DD42= UC400 DDC-Basic (Water heat- N.C.- 2 position)

DD43= UC400 DDC-Basic (Water heat- Modulating)

DD44= UC400 DDC-Basic (Electric heat- staged)

DD45= UC400 DDC-Basic (Electric heat- PWM)

DD46= UC400 DDC Ventilation flow- cooling only

DD47= UC400 DDC-Basic (Water heat- N.O.- 2 position)

DD49= UC400 DDC-Flow Tracking (Cooling only)

DD50= UC400 DDC-Ventilation Flow (Water heat- N. C.- 2 position)

DD51= UC400 DDC-Ventilation Flow (Electric heat- staged)

DD52= UC400 DDC-Ventilation Flow (Water heat- Modulating)

DD53= UC400 DDC-Basic plus- Local (Electric heat- PWM) Remote (Staged EH)

DD54= UC400 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.C. 2 position)

DD55= UC400 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.O. 2 position)

DD56= UC400 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- Modulating)

DD57= UC400 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- Modulating)

DD58= UC400 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.O. 2-position)

DD59= UC400 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- N.C. 2-position)

DD60= UC400 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.C. 2-position)

DD61= UC400 DDC-Basic plus- Local (Water heat- N.C. 2-position)

Remote (Water- N.O. 2-position) DD62= UC400 DDC-Basic plus- Local

(Electric heat- Staged) Remote (Staged EH)

DD63= UC400 DDC-Ventilation Flow (Water heat- N.O. 2-position)

DD65= UC400 Basic (Electric HeatModulating SCR)

DD66= UC400 Basic plus-Local (Electric heat-Modulating SCR) Remote (Staged EH)

DD67= UC400 Ventilation Flow (Electric heat-Modulating SCR)

DD71= UC210 DDC-Basic (No water or electric heat)

DD72= UC210 DDC-Basic (Water heat- N.C.- 2 position)

DD73= UC400 DDC-Basic (Water heat- Modulating)

DD74= UC210 DDC-Basic (Electric heat- staged)

DD75= UC210 DDC-Basic (Electric heat- PWM)

DD76= UC210 DDC Ventilation flow- cooling only

DD77= UC210 DDC-Basic (Water heat- N.O.- 2 position)

DD79= UC210 DDC-Flow Tracking (Cooling only)

DD80= UC210 DDC-Ventilation Flow (Water heat- N. C.- 2 position)

DD81= UC210 DDC-Ventilation Flow (Electric heat- staged)

DD82= UC210 DDC-Ventilation Flow (Water heat- Modulating)

DD83= UC210 DDC-Basic plus- Local (Electric heat- PWM) Remote (Staged EH)

DD84= UC210 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.C. 2 position)

DD85= UC210 DDC-Basic plus- Local (Water heat- Modulating) Remote (Water- N.O. 2 position)

DD86= UC210 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- Modulating)

DD87= UC210 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- Modulating)

DD88= UC210 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.O. 2-position)

DD89= UC210 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- N.C. 2-position)

DD90= UC210 DDC-Basic plus- Local (Water heat- N.O. 2-position) Remote (Water- N.C. 2-position)

DD91= UC210 DDC-Basic plus- Local (Water heat- N.C. 2-position) Remote (Water- N.O. 2-position)

DD92= UC210 DDC-Basic plus- Local (Electric heat- Staged) Remote (Staged EH)

DD93= UC210 Ventilation Flow (Water heat- N.O. 2-position)

DD95= UC210 Basic (Electric HeatModulating SCR)

DD96= UC210 Basic plus-Local

VAV-SVX08E-EN 5


(Electric heat-Modulating SCR) Remote (Staged EH)

DD97= UC210 Ventilation Flow (Electric heat-Modulating SCR)

ENCL= Shaft Only in Enclosure ENON= Shaft Out Side for Electric Units FM00= Other Actuator and Control FM01= Trane Supplied Actuator, Other

Ctrl PC00= N.C. Actuator and Linkage Only PC04= N.C. with DA Stat, 3000 Series PC05= N.C. with RA STAT, 3000 Series PCSS= Normally Closed Special PN00= N.O. Actuator and Linkage Only PN04= N.O. 3000 Series, DA STAT PN05= N.O. 3000 Series, RA STAT PN11= Auto Dual Min. PN32= N.O. PNEU Constant Vol. PN34= N.O. 3000 Series Constant

Vol.,RA STAT PNON= Shaft Out Side for Pneumatic

Units PNSS= Normally Open SpecialN.C .= Normally-closed N.O. = Normally-opened DA Stat = Direct-acting pneumatic t-stat

(by others) RA Stat = Reverse-acting pneumatic

t-stat (by others) PN = Pneumatic FM = Factory installation of customer-

supplied controller PVR = Pneumatic Volume Regulator

Digit 16—InsulationA = 1/2" Matte-faced B = 1" Matte-faced D = 1" Foil-faced F = 1" Double-wall G = 3/8" Closed-cell

Digit 17 & 18—Not Used00 = N/A

Digit 19—Outlet Plenum (Connection is Slip & Drive)

0 = None A = 1 Outlet RH B = 1 Outlet END C = 1 Outlet LH D = 2 Outlets, 1 RH, 1 END E = 2 Outlets, 1 LH, 1 END F = 2 Outlets, 1 RH, 1 LH H = 3 Outlets, 1 LH, 1 RH, 1 END J = 4 Outlets, 1 LH, 1 RH, 2 END

Note: See unit drawings for outlet sizes/damper information.

Digit 20—Not Used0 = N/A

Digit 21—Water Coil0 = None 1 = 1-Row 2 = 2-Row 3 = 3-Row 4 = 4-Row A = 1-Row Premium B = 2-Row Premium C = 3-Row Premium D = 4-Row Premium

Digit 22—Electrical ConnectionsF = Flippable (can be flipped in the

field for LH or RH connections - VCEF only)

L = Left (Airflow hitting you in the face)

R = Right (Airflow hitting you in the face)

0 = Opposite side connection – coil and control (VCWF only)

Note: VCCF, VCWF can be flipped in field for opposite-hand connection

Digit 23—Transformer0 = None 1 = 120/24 volt (50 VA) 2 = 208/24 volt (50 VA) 3 = 240/24 volt (50 VA) 4 = 277/24 volt (50 VA) 5 = 480/24 volt (50 VA) 6 = 347/24 Volt (50 VA) 7 = 380/24 Volt (50 VA) 8 = 575/24 Volt (50 VA)

Note: For VCEF units with transformers the VA depends on the staging, control, and contactor type (ranges are 50 VA to 75 VA, for 1 and 3 phase)

Digit 24—Disconnect Switch0 = None W = With

Note: VCCF, VCWF – Toggle Disconnect; VCEF – Door Interlocking Power Disconnect

Digit 25—Power Fuse0 = None W = With

Digit 26—Electric Heat Voltage0 = None A = 208/60/1 B = 208/60/3 C = 240/60/1 D = 277/60/1 E = 480/60/1 F = 480/60/3 G = 347/60/1 H = 575/60/3 J = 380/50/3 K = 120/60/1

Digit 27 - 29—Electric Heat kW000= None 010 = 1.0 kW 015 = 1.5 kW 460 = 46.0 kW

Note: 0.5 to 8.0 kW – ½ kW increments 8.0 to 18.0 kW – 1 kW increments 18.0 to 46.0 kW – 2 kW increments

Digit 30—Electric Heat Stages0 = None 1 = 1 Stage 2 = 2 Stages Equal 3 = 3 Stages Equal

Digit 31—Electrical Heat Contactors

0 = None 1 = 24-volt magnetic 2 = 24-volt mercury 3 = PE with magnetic 4 = PE with mercury 5 = SCR heat UC400/UC210 6 = SCR heat FMTD/ENCL/DD00 A = 24-volt mercury (left hand) B = 24-volt mercury (right hand) C = PE with mercury (left hand) D = PE with mercury (right hand)

Digit 32 & 33—Not Used00 = N/A

Digit 34—Actuator0 = Standard A = Spring Return (Normally Open) B = Spring Return (Normally Closed) C = Belimo Actuator

Digit 35—Sensor Options0 = Standard (Wired) 1 = Factory Mounted Wireless

Receiver (Sensor Accessory) 2 = Wireless Comm Interface

Modular FM

Digit 36—Pre-Wired Factory Solutions0 = None 1 = Factory Mounted DTS 2 = HW Valve Harness 3 = Both DTS & HW Valve Harness 4 = Averaging DTS factory installed

in unit (Required for UC210/UC400 with SCR heat)

Digit 37—Bottom Access with Cam Locks 0 = None1 = Access Left Side Terminal Unit2 = Access Right Side Terminal Unit3 = Access Left Side Terminal Unit

with Water Connection on Right4 = Access Right Side Terminal Unit

with Water Coil Connection onLeft

6 VAV-SVX08E-EN


Digit 38—Piping Package0 = None A = 2-way Automatic Balancing) B = 3-way Automatic Balancing

Digit 39—Water Valve0 = None 1 = Proportional, HW Valve, 0.7 Cv 2 = Proportional, HW Valve, 2.7 Cv 3 = Proportional, HW Valve, 6.6 Cv 4 = Proportional, HW Valve, 8.0Cv

Digit 40—Flow Rate00 = None A = 0.5 gpm (0.03 l/s) B = 1.0 gpm (0.06 l/s) C = 1.5 gpm (0.09 l/s) D = 2.0 gpm (0.13 l/s) E = 2.5 gpm (0.16 l/s) F = 3.0 gpm (0.19 l/s) G = 3.5 gpm (0.22 l/s) H = 4.0 gpm (0.25 l/s) J = 4.5 gpm (0.28 l/s) K = 5.0 gpm (0.31 l/s) L = 5.5 gpm (0.35 l/s) M = 6.0 gpm (0.38 l/s) N = 6.5 gpm (0.41 l/s) P = 7.0 gpm (0.44 l/s) Q = 7.5 gpm (0.47 l/s) R = 8.0 gpm (0.50 l/s) S = 9.0 gpm (0.57 l/s) T = 10.0 gpm (0.63 l/s) U = 11.0 gpm (0.69 l/s) V = 12.0 gpm (0.76 l/s) W = 13.0 gpm (0.82 l/s) X = 14.0 gpm (0.88 l/s) Y = 15.0 gpm (0.95 l/s) Z = 16.0 gpm (1.01 l/s) 1 = 17.0 gpm (1.07 l/s) 2 = 18.0 gpm (1.14 l/s) 3 = 19.0 gpm (1.20 l/s) 4 = 20.0 gpm (1.26 l/s) 5 = 21.0 gpm (1.32 l/s) 6 = 22.0 gpm (1.39 l/s) 7 = 23.0 gpm (1.45 l/s)

VAV-SVX08E-EN 7


Dual-Duct Units

Digit 1, 2, 3—Unit TypeVDD= VariTrane dual-duct


Digit 5, 6—Primary Air Valve05 = 5" inlet (350 cfm) 06 = 6" inlet (500 cfm) 08 = 6" inlet (900 cfm) 10 = 10" inlet (1400 cfm) 12 = 12" inlet (2000 cfm) 14 = 14" inlet (3000 cfm) 16 = 16" inlet (4000 cfm)

Digit 7, 8—Secondary Air Valve05 = 5" inlet (350 cfm) 06 = 6" inlet (500 cfm) 08 = 8" inlet (900 cfm) 10 = 10" inlet (1400 cfm) 12 = 12" inlet (2000 cfm) 14 = 14" inlet (3000 cfm) 16 = 16" inlet (4000 cfm)


Digit 10, 11—Design Sequence** = Factory Assigned

Digit 12, 13, 14, 15—ControlsDD00= Trane Actuator Only DD01= UCM4 Cooling Only Control DD08= UCM4 Dual Duct

Constant Volume DD11= VV550 DDC Controller -

Cooling Only DD18= VV550 DDC Controller w

Constant Volume DD41= UC400 DDC-Basic (No water or

electric heat) DD48= UC400 DDC-Basic (Constant

Volume) DDSS= Digital Special ENON= Shaft Out Side for Electric

Units FM00= Other Actuator and Control FM01= Trane Supplied Actuator, Other

Ctrl PC03= NC Heating Valve, N.O. Cooling

Valve PCSS= Normally Closed Special PN08= N.O. Heat/Cool Actuators &

Linkage OnlyPN09= N.O. Heating, N.O. Cooling,

w/PVR’s PN10= N.O. Heating, N.O. Cooling,

w/PVR’s (CV DISCH) PNON= Shaft Out Side for Pneumatic

UnitsPNSS= Normally Open Special

Notes:N.C. = Normally-closed N.O. = Normally-opened DA Stat = Direct-acting pneumatic t-stat (by others) RA Stat = Reverse-acting pneumatic t-stat (by others) PN = Pneumatic FM = Factory installation of customer-

supplied controller PVR = Pneumatic Volume Regulator

Digit 16—InsulationA = 1/2" Matte-faced B = 1" Matte-faced D = 1" Foil-faced F = 1" Double-wall G = 3/8" Closed-cell



Digit 19—Outlet Plenum (Connection is slip & drive)0 = none A = 1 outlet–RH B = 1 outlet–END C = 1 outlet–LH D = 2 outlets–1 RH, 1 END E = 2 outlets–1 LH, 1 END F = 2 outlets–1 RH, 1 LH G = 2 outlets - END H = 3 outlets–1 LH, 1 RH, 1 END J = 4 outlets–1 LH, 1 RH, 2 END

Note: See unit drawings for outlet sizes/damper information.




Digit 23—Transformer0 = None 1 = 120/24 volt (50 VA) 2 = 208/24 volt (50 VA) 3 = 240/24 volt (50 VA) 4 = 277/24 volt (50VA) 5 = 480/24 volt (50 VA) 6 = 347/24 volt (50 VA) 7 = 575/24 volt (50 VA)

Digit 24—Disconnect Switch0 = None W = With Toggle

Digit 25—Power Fuse0 = None W = With








Digit 33—Special Options0 = NoneX = Varies - Factory Assigned

Digit 34—ActuatorA = Belimo Actuator

Digit 35—Wireless Sensor0 = Sensor/Receiver Standard1 = Wireless Sensor/Receiver

Mounted

Note: All sensors selected in accessories

Digit 36—Duct Temp Sensor0 = None 1 = With Duct Temp Sensor

8 VAV-SVX08E-EN


Fan-Powered Units

Digit 1, 2—Unit TypeVP = VariTrane Fan-Powered Parallel VS = VariTrane Fan-Powered Series LP = VariTrane Fan-Powered

Low-Height ParallelLS = VariTrane Fan-Powered

Low-Height Series

Digit 3—ReheatC = Cooling OnlyE = Electric HeatW = Hot Water Heat


Digit 5, 6—Primary Air Valve05 = 5" inlet (350 max cfm)06 = 6" inlet (500 max cfm)08 = 8" inlet (900 max cfm)10 = 10" inlet (1400 max cfm)12 = 12" inlet (2000 max cfm)14 = 14" inlet (3000 max cfm)16 = 16" inlet (4000 max cfm)RT = 8" x 14" inlet (1800 max CFM)

Note: 10, 12, 14, 16 Not Available on Low-Height

Digit 7, 8—Secondary Air Valve00 = N/A

Digit 9—FanP = 02SQ fan (500 nominal cfm)Q = 03SQ fan (1100 nominal cfm)R = 04SQ fan (1350 nominal cfm)S = 05SQ fan (1550 nominal cfm)T = 06SQ fan (1850 nominal cfm)U = 07SQ fan (2000 nominal cfm)V = 08SQ Fan (500 nominal cfm)W = 09SQ Fan (900 nominal cfm)X = 10SQ Fan (1800 nominal cfm)

Digit 10, 11—Design Sequence** = Factory assigned

Digit 12, 13, 14, 15—ControlsDD01= Cooling Only Control DD02= N.C. On/Off Hot WaterDD03= Prop. Hot WaterDD04= Staged On/Off E-HeatDD05= Pulse Width Mod of E-HeatDD07= N.O. On/Off Hot WaterDD11= VV550 DDC Controller - Cooling

Only DD12= VV550 DDC Ctrl w/N.C. On/Off

HW Valve DD13= VV550 DDC Ctrl w/Prop. HW

Valve DD14= VV550 DDC Ctrl - On/Off

Electric Heat DD15= VV550 DDC Ctrl w/Pulse Width

Modulation DD17= VV550 DDC Ctrl w/N.O. On/Off

HW Valve DD23= VV550 DDC- Basic plus- Local

(Electric heat- PWM) Remote(Staged EH)

DD28= VV550 DDC-Basic plus- Local(Water heat- N.O. 2-position)Remote (Water- N.O. 2-position)

DD29= VV550 DDC-Basic plus- Local(Water heat- N.C. 2-position)Remote (Water- N.C. 2-position)

DD30= VV550 DDC-Basic plus- Local(Water heat- N.O. 2-position)Remote (Water- N.C. 2-position)

DD31= VV550 DDC-Basic plus- Local(Water heat- N.C. 2-position)Remote (Water- N.O. 2-position)

DD32= VV550 DDC-Basic plus- Local(Electric heat- Staged) Remote(Staged EH)

DD41= UC400 DDC-Basic (No water orelectric heat)

DD42= UC400 DDC-Basic (Water heat-Normally Closed- 2 position)

DD43= UC400 DDC-Basic (Water heat-Modulating)

DD44= UC400 DDC-Basic (Electric heat-staged)

DD45= UC400 DDC-Basic (Electric heat-PWM)

DD47= UC400 DDC-Basic (Water heat-Normally Opened- 2 position)

DD53= UC400 DDC-Basic plus- Local(Electric heat- PWM) Remote(Staged EH)

DD58= UC400 DDC-Basic plus- Local(Water heat- N.O. 2-position)Remote (Water- N.O. 2-position)

DD59= UC400 DDC-Basic plus- Local(Water heat- N.C. 2-position)Remote (Water- N.C. 2-position)

DD60= UC400 DDC-Basic plus- Local(Water heat- N.O. 2-position)Remote (Water- N.C. 2-position)

DD61= UC400 DDC-Basic plus- Local(Water heat- N.C. 2-position)Remote (Water- N.O. 2-position)

DD62= UC400 DDC-Basic plus- Local(Electric heat- Staged) Remote(Staged EH)

DD65= Basic (Electric Heat- Modulating SCR)

DD66= Basic plus – Local (Electric heat – Modulating SCR) Remote (Staged EH)

DD71= UC210 DDC-Basic (Cooling only)

DD72= UC210 DDC-Basic (Water heat-nc 2pos)

DD73= UC210 DDC-Basic (Water heat-Modulating)

DD74= UC210 DDC-Basic (Electric heat-staged)

DD75= UC210 DDC-Basic (Electric heat-pwm) DD77= UC210 DDC-Basic

(Water heat-NO 2pos) DD83= UC210 DDC-Basic+ Local

(Electric heat-pwm) Remote (Staged)

DD84= UC210 DDC-Basic+ Local (Water heat Modulating) Remote (Water-NC 2pos)

DD85= UC210 DDC-Basic+ Local (Water heat Modulating) Remote (Water-NO 2pos)

DD86= UC210 DDC-Basic+ Local (Water heat NO 2pos)

Remote (Water-Modulating) DD87= UC210 DDC-Basic+ Local

(Water heat NC 2pos) Remote (Water-Modulating)

DD88= UC210 DDC-Basic+ Local (Water heat NO 2pos) Remote (Water-NO 2pos)

DD89= UC210 DDC-Basic+ Local (Water heat NC 2pos) Remote (Water-NC 2pos)

DD90= UC210 DDC-Basic+ Local (Water heat NO 2pos) Remote (Water-NC 2pos)

DD91= UC210 DDC-Basic+ Local (Water heat NC 2pos) Remote (Water-NO 2pos)

DD92= UC210 DDC-Basic+ Local (Electric heat-staged) Remote (Staged)

DD95= UC210 DDC-Ctrl w/Modulating SCR

DD96= UC210 DDC-Space Temp Ctrl w/ Local SCR & Remote Stge ElecHeat

DD00= Trane Actuator OnlyENCL= Shaft Only in EnclosureENON= Shaft Out Side for Electric UnitsFM00= Other Actuator and ControlFM01= Trane supplied actuator,

other control PN00= N.O. Actuator and Linkage OnlyPN05= N.O. 3000 Series, RA StatPN51= Pneumatic normally open

w/3011,DPS fanPN52= Pneumatic normally open

w/3011, DPM fanPNON= Shaft Out Side for Pneumatic

Units

Notes:N.C. = Normally-closedN.O. = Normally-openedDA Stat = Direct-acting pneumatic t-stat

(by others)RA Stat = Reverse-acting pneumatic

t-stat (by others)PN = PneumaticFM = Factory installation of customer-

supplied controllerPVR = Pneumatic Volume Regulator

Digit 16—InsulationA = 1/2” Matte-facedB = 1" Matte-facedD = 1" Foil-facedF = 1" Double-wallG = 3/8” Closed-cell

Digit 17—Motor TypeD = PSC MotorE = High-efficiency motor (ECM)

Digit 18—Motor Voltage1 = 115/60/12 = 277/60/13 = 347/60/14 = 208/60/15 = 230/50/1

VAV-SVX08E-EN 9


Digit 19—Outlet Connection1 = Flanged2 = Slip & Drive

Digit 20—Attenuator0 = No AttenuatorW = With Attenuator

Digit 21—Water Coil0 = None1 = 1-Row–Plenum inlet installed RH2 = 2-Row–Plenum inlet installed RH3 = 1-Row–Discharge installed, LH4 = 1-Row–Discharge installed, RH5 = 2-Row–Discharge installed, LH6 = 2-Row–Discharge installed, RH1 A = 1-Row–Premium water coil inletB = 2-Row–Premium water coil inletC = 1-Row–Premium hot coil

on discharge, LHD = 1-Row–Premium hot coil

on discharge, RHE = 2-Row–Premium hot coil

on discharge, LHF = 2-Row–Premium hot coil

on discharge, RH

Note: 1- and 2-row not available with Low-Height

Digit 22—Electrical ConnectionsL = Left (Airflow hitting you in the

face)R = Right (Airflow hitting you in the

face) W = Narrow Corridor LH, Hi-Volt Inlet

FacingX = Narrow Corridor RH, Hi-Volt Inlet

Facing

Note: (W & X) Fan Powered Series Only

Digit 23—Transformer0 = N/A (provided as standard)

Digit 24—Disconnect Switch0 = NoneW = WithElectric Reheat w/ door interlocking power disconnect, Cooling Only and Water Reheat w/ toggle disconnect

Digit 25—Power Fuse0 = NoneW = With

Digit 26—Electric Heat Voltage0 = NoneA = 208/60/1B = 208/60/3C = 240/60/1D = 277/60/1E = 480/60/1F = 480/60/3G = 347/60/1H = 575/60/3J = 380/50/3K = 120/60/1

Note: K not available with Low Height

Digit 27, 28, 29—Electric Heat kW000= None050 = 0.5 kW010 = 1.0 kW015 = 1.5 kW260 = 26.0 kW

Note: Electric Heat Voltage - 0.5 to 8.0 kW–½ kW increments8.0 to 18.0 kW –1 kW increments18.0 to 46.0 kW–2 kW increments

Digit 30—Electric Heat Stages0 = None1 = 1 Stage2 = 2 Stages Equal3 = 3 Stages Equal

Note: 3 not available with Low Height

Digit 31—Contactors0 = None1 = 24-volt magnetic2 = 24-volt mercury3 = PE with magnetic4 = PE with mercury5 = SCR heat UC400 6 = SCR heat FMTD/ENCL/DD00

Note: SCR cannot be selected with the following configuration:

• KW > 10, 208 volt 3 phase, Low Height

• KW > 22, 480 volt 3 phase, Low Height

• Voltage = 575 volt

Digit 32—Airflow Switch0 = NoneW = With


Digit 34—Actuator0 = StandardA = Belimo actuator

Digit 35—Wireless Sensors0 = None1 = Factory Mounted Wireless

Receiver (Sensor Assembly)2 = Wireless Comm Interface

Modular FM

Note: All sensors selected in accessories

Digit 36—Pre-Wired Factory Solutions0 = None 1 = Factory Mounted DTS 2 = HW Valve Harness 3 = Both DTS & HW Valve Harness

Digit 37—Bottom Access0 = None W = Access Left Side of Terminal Unit

Digit 38—Piping Package0 = None A = 2-way Automatic Balancing) B = 3-way Automatic Balancing

Digit 39—Water Valve0 = None 1 = Proportional, HW Valve, 0.7 Cv 2 = Proportional, HW Valve, 2.7 Cv 3 = Proportional, HW Valve, 6.6 Cv 4 = Proportional, HW Valve, 8.0Cv

Digit 40—Flow Rate0 = None A = 0.5 gpm (0.03 l/s) B = 1.0 gpm (0.06 l/s) C = 1.5 gpm (0.09 l/s) D = 2.0 gpm (0.13 l/s) E = 2.5 gpm (0.16 l/s) F = 3.0 gpm (0.19 l/s) G = 3.5 gpm (0.22 l/s) H = 4.0 gpm (0.25 l/s) J = 4.5 gpm (0.28 l/s) K = 5.0 gpm (0.31 l/s) L = 5.5 gpm (0.35 l/s) M = 6.0 gpm (0.38 l/s) N = 6.5 gpm (0.41 l/s) P = 7.0 gpm (0.44 l/s) Q = 7.5 gpm (0.47 l/s) R = 8.0 gpm (0.50 l/s) S = 9.0 gpm (0.57 l/s) T = 10.0 gpm (0.63 l/s) U = 11.0 gpm (0.69 l/s) V = 12.0 gpm (0.76 l/s) W = 13.0 gpm (0.82 l/s)

10 VAV-SVX08E-EN

Unit Information

Single-Duct Units

The basic unit consists of a sheet metal casing with an air valve, which is used to modulate the air being delivered into the occupied zone. The unit is designed to modulate either cooling or heating air between the temperatures of 40°F and 140°F. Air enters the air valve through the round or rectangular inlet and exits into the sheet metal casing to be distributed to the zone either through integral round outlets in the casing or through rectangular duct attached to the discharge of the unit.

The basic unit can also be ordered with factory-mounted electric or hot water heating coils attached to the discharge. See Figure 2, p. 11.

These re-heat units are used primarily to reheat air-to-zone temperature when the load in the occupied space is low.

Primary air is modulated through the VariTrane air valve by rotating the damper blade. All air valves have a round/rectangular inlet for easy fit-up with incoming duct work.

Typical Single-Duct Units

Dual-Duct Units

Dual-duct units provide two air valves: one as heating primary air and the other as cooling primary air. Both discharge into the common outlet, which leads to the zone being controlled. See Figure 4, p. 11.

Units are provided with a slip and drive rectangular duct connection or can be ordered with integral outlet plenum.

Sequencing of hot and cold air valve is dependent on job requirements. One typical control is valves working in conjunction to respond to zone temperature.

When the cooling valve becomes fully closed or reaches a specified minimum, the heating valve will begin to modulate or vice versa. The typical result is that air flowing to the zone varies from maximum down to a minimum and back up to maximum as load varies and controls would cause one air valve to close and the other to open.

Another typical application is when the unit provides a constant volume to the zone. When the zone sensor is tied directly to the heating valve, it will modulate the heating valve according to the zone temperature.

When the heating valve is fully closed or there is a call for cooling in the zone, the cooling valve will be at constant supply. As the space becomes too cool, the heating valve will modulate open, decreasing the cooling valve flow. The typical result is that the air flowing into the zone stays at a constant flow whether the unit is heating or cooling.

Figure 1. Typical single duct unit — VCCF

Figure 2. Typical single duct unit — VCWF

Figure 3. Typical single duct unit — VCEF

Figure 4. Typical dual-duct unit: VDDF

VAV-SVX08E-EN 11

Unit Information

Fan-Powered and Fan-Powered Low-

Height Units

VariTrane fan-powered and low-height fan-powered units can be either parallel or series, with or without re-heat. (SeeFigure 5, p. 12 thru Figure 8, p. 12.)

Typical Fan-Powered Units

The fan on a series unit runs continuously whenever the main air handler unit is in operation. There are various options for starting the fan. The fan can be started three ways: 1) remotely, 2) by a duct pressure switch, or 3) by a combination of both. The particular fan control method may vary from unit to unit, depending upon job needs.

Typically, heater is off while air valve modulates primary air and responds to zone temperature. If zone temperature decreases to the point where a decrease in primary air will not maintain the desired temperature, the re-heat will be activated to increase the temperature of the discharge air.

On a parallel unit, the VariTrane air valve delivers primary cooling air to the unit outlet. When the space temperature decreases beyond air valve control, the fan is turned on as the first stage of heat. The fan delivers plenum air from above the occupied space to the unit outlet, which is mixed with primary air and delivered to the occupied space.

Note: Either the fan, the air valve, or both can deliver airflow into the occupied space. In order to prevent primary airflow from exiting through the fan when the fan is not running on a parallel unit, a back draft damper is provided. When the fan is not running, the efficiency of this system is the same as a standard single-duct VAV unit.

Typically, the control systems applied to parallel units cause the air valve to close to zero or a minimum flow before the fan is activated. After the fan is activated, the optional heat will be activated upon further reduction in zone temperature. Therefore, minimal primary air is mixed with the heated air.

VariTrane fan-powered unit fan sizes 02SQ–05SQ and 08SQ–10SQ were performance tested at .12 in. w.g. and sizes 06SQ and 07SQ were tested at .15 in. w.g. Units are not designed to operate unducted and below these tested static pressures.

Note: Fan-powered units are available with rectangular discharge connection only. The optional heater is mounted on the discharge of the unit. Hot water coils are connected to either the plenum inlet or on the discharge on parallel units, and to the discharge of series units.

Figure 5. Parallel fan-powered terminal unit (top) &

series fan-powered terminal units (bottom)

Figure 6. Low height series: LSCF (top) & low height

series: LSWF (bottom)

Figure 7. Low height series: LSEF (top) & low height

parallel: LPCF (bottom)

Figure 8. Low height parallel: LPWF (top) & low height

parallel: LPEF (bottom)

12 VAV-SVX08E-EN

Unit Installation

Due to their weight, the VAV terminal units should be suspended from the uppermost ceiling, independent of the false ceiling grid. Suspension devices are to be supplied by the installer. Units must be installed level and upright. Failure to level the unit properly may prevent proper operation of the controls and/or terminal unit. Units are not designed to be installed vertically. Consequently, this will also void the UL ratings and any warranty on the unit.

Single-Duct

Depending upon the size and weight of the single-duct unit, it may be capable of being supported by the ductwork that is connected to it. No hanger brackets are provided on these units since the unit should be supported by means of a hanger strap. The hanger strap should be secured directly to the unit casing as shown in Figure 9, p. 13.

For cooling only single-duct units or single-duct units with hot water coil, the unit may be rotated 180° for opposite side connections.

For units with electric heat, the unit can be flipped to either RH or LH connection orientation if model number digit 22 Electrical Connections = F.

Dual-Duct

Dual-duct units should be supported by either hanger straps or by using a threaded rod in conjunction with the hanger brackets that are provided on the unit. See Figure 10, p. 13.

Fan-Powered (Standard and Low-Height)

Fan-powered units should be supported by either hanger straps or by using a threaded rod in conjunction with the hanger brackets that are provided on the unit. Care should be exercised to insure that the hanging straps do not block the side access panel. See Figure 11, p. 16 thru Figure 18, p. 22.

Duct Connections

All VariTrane units should be provided with a minimum of 1.5-duct diameters of straight duct prior to the inlet of the unit. It is recommended that at least 48 inches of straight duct be provided from the discharge of the units prior to any take-offs or transitions.

Important: This is a requirement for electric heat fan-powered units used in applications with 100% downward discharge.

Note: In order to maintain good air distribution over the elements and not create turbulence which could cause a limit cutout there should be four feet of ductwork, consistent of the discharge dimensions of the heater. downstream of the reheat coil prior to any diffuser takeoffs for VariTrane™ electric coils.

1. After all connections are made, check that the entire ductwork system is airtight. In some high-pressure systems, duct sealer may be necessary.

Note: All inlet duct on the VAV boxes are sized approximately 1/8" smaller in diameter than the nominal size in order to allow the incoming duct to slide over the inlet of the VAV box.

2. Provide insulation around the entire inlet collar (all the way to the unit casing).

WARNING

Proper Structural Support Required!

Ceiling structure must be strong enough to support the weight of the unit. If unsure, check with a structural engineer. Refer toTable 1, p. 24 thruTable 6, p. 26 for unit weights. Failure to ensure proper structural ceiling support could result in unit failing from its location which could result in death or serious injury.

Figure 9. Single-duct hanging recommendations

.

Figure 10. Dual-duct hanger bracket locations

Inlet Size B C A

1.376" (35 mm)

25.154" (639 mm) 1.376" (35 mm) 37.25" (946 mm)

25.25" (641 mm) 23.154" (588 mm)

12" thru 16"

5" thru 10"

AIR VALVE

AIR VALVE

COOLING HEATING

C

A

B

TOP VIEW

VAV-SVX08E-EN 13

Unit Installation

Note: Use caution not to damage the flow tubes when making ductwork connections or insulating.

3. Cut “slits” in the insulation for the flow tubes and secure with duct tape.

4. If the unit is to be installed in a location with high humidity, external insulation around the heating coil should be installed as required.

Water Coil Connections

Note: The following coils have 3/8” OD water coil piping connections.

• Single Duct 1-row coils (inlet sizes 05, 05, 06, 08 or 10 only)

• Low Height Parallel Inlet 1-row

• Low Height Parallel Discharge 1-row

All others require a 7/8” OD water coil piping connections.

Note:

1. If necessary, you can change the coil connection from left-handed to right-handed (and vice-versa) by disconnecting the coil from the unit and rotating the coil “like a steering wheel” 180°.

Note: Exception - Coil connection cannot be changed on parallel fan powered unit with hot water coil on plenum inlet.

2. Use port at the bottom for inlet and top for outlet on single row coils. For multirow coils, always plumb in counter flow orientation.

• Water inlet is always on the airflow downstream side of the hot water coil.

• Water outlet is always on the upstream side of the hot water coil.

3. Care should be taken to properly support the water coil piping connections while connecting the adjoining pipe.

4. It is recommended that piping to the water coil should be done after field-mounted controls, external insulation, and ductwork connections have been completed.

Important: Do not connect water valve or pipe extensions to the water coil connections unless supported.

Unit Accessibility

• Single-duct and dual-duct units provided with hot water reheat have an access panel located on the side of the water coil. All other single-duct and dual-duct units are provided without access, as all functioning components are external to the unit.

• Fan-powered terminals are provided with a sliding side access.

• Low-height terminal units have a removable bottom panel.

Clearances

For proper service, it is recommended that at least 36” of side clearance be provided to service and access single-duct and dual-duct terminals units.

• Fan-powered VAV units have a plenum inlet that must be clear of obstructions. Allow at least 36” of clearance in front of the side access and plenum opening.

• Low-height fan-powered terminals require the same plenum clearance requirement that applies to the standard fan-powered units. However the access to the internal components is located on the bottom of the unit.

It is also recommended that 6” of clearance be provided to the top and bottom of all the units.

Note: The minimum clearance for controls and heater controls should be 36” for all models except units with 575-volt electric heaters, which require 48” of clearance. NEC and/or local codes override all clearance requirements.

Actuator Mounting

Important: When installing or replacing the actuator tighten the actuator set screw per the manufacturer’s instructions. Failure to follow the manufacturer’s specifications may result in unit malfunction.

Trane offers a factory-mounted actuator with a 90-second drive time. The actuator drives 1 degree per second. A field-installed actuator may be used if desired. The actuator shaft has a ½-inch diameter and is designed to travel clockwise to close the damper and counter-clockwise to open the damper. There is an indicator on the end of the actuator shaft that can be used to determine the position of the damper.

Stand Alone UCM 4.2

When there is no communication to the UCM control and the unit is in the stand alone mode the control action is determined by the auxiliary temperature sensor located on TB3-5 and TB3-6 terminals on the UCM board. In order for the auxiliary sensor to determine the control action (heat, cool) it must be located in the supply duct. The auxiliary temperature is then compared to the zone temperature. If the supply air temperature is 10 degrees above the zone temperature, then the control action will be heat. If the supply air temperature is less than or equal to the zone temperature, then the control action will be cool. If the supply air temperature is between the zone temperature and the zone temperature + 10ºF (5.5°C)(zone temperature < supply air temperature < zone temperature + 10ºF) (5.5°C), the control action remains the same and the UCM controls to the minimum flow set point. If an auxiliary sensor is not installed the UCM will retain the last control action in effect.

14 VAV-SVX08E-EN

Unit Installation

Stand Alone VV550 LonTalk™ Control

When there is no communication to the VV550 control and the unit is in the stand alone mode the control action is determined by the auxiliary temperature sensor located on TB3-5 and TB3-6 terminals on the VV550 board. The control must also be configured through the “Inputs Tab” of Analog Input 4 as “Primary Supply Air Sensor”. In order for the auxiliary sensor to determine the control action (heat, cool) it must be located in the supply inlet of the duct. The auxiliary temperature is then compared to the zone temperature. If the supply air temperature is 10 degrees above the zone temperature, then the control action will be heat. If the supply air temperature is less than or equal to the zone temperature, then the control action will be cool. If the supply air temperature is between the zone temperature and the zone temperature + 10ºF (5.5°C)(zone temperature < supply air temperature < zone temperature + 10ºF) (5.5°C), the control action remains the same and the UCM controls to the minimum flow set point. If an auxiliary sensor is not installed the UCM will retain the last control action in effect.

Stand Alone UC400

When there is no communication to the UC400 control and the unit is in the stand alone mode the control action is determined by the auxiliary temperature sensor located on AI5 terminals on the UC400 control. This input may have to be changed from AI4 (Discharge Air Input) as wired from the factory. In order for the auxiliary sensor to determine the control action (heat, cool) it must be located in the supply inlet of the duct. The auxiliary temperature is then compared to the zone temperature. If the supply air temperature is 10 degrees above the zone temperature, then the control action will be heat. If the supply air temperature is less than or equal to the zone temperature, then the control action will be cool. If the supply air temperature is between the zone temperature and the zone temperature + 10ºF (5.5°C)(zone temperature < supply air temperature < zone temperature + 10ºF) (5.5°C), the control action remains the same and the UCM controls to the minimum flow set point. If an auxiliary sensor is not installed the UCM will retain the last control action in effect.

VAV-SVX08E-EN 15

Unit Installation

Figure 11. Parallel hanger bracket locations sizes

WaterCoil

AirflowPlenum Inlet

Optional AttenuatorField Installed

PrimaryAirflow

TOP VIEWParallel Cooling & Hot Water

Flow RingTubing

AirValve

AirflowDischarge Outlet

A

B C

D

EF

A D E F

B

C

FAN SIZE02SQ

03SQ, 04SQ, 05SQ06SQ, 07SQ

26.75" (679 mm) 26.75" (679 mm)

26.75" (679 mm)26.75" (679 mm)29.75" (756 mm)

36.75" (933 mm)

41.154" (1041 mm)

41.154" (1041 mm)41.154" (1041 mm)

3.25" (83 mm)

3.25" (83 mm)3.25" (83 mm)

20.00" (508 mm)

20.00" (508 mm)20.00" (508 mm)

38.95" (989 mm)

38.95" (989 mm)38.95" (989 mm)

AirflowPlenum Inlet


PrimaryAirflow

TOP VIEWParallel Electric Heat

Flow RingTubing

AirValve


A

D

EF

B

C

HeaterTerm

inal

Box

43.546(1106 mm)

16 VAV-SVX08E-EN

Unit Installation

Figure 12. Series hanger bracket locations

Water Coil

Airflow Plenum Inlet

Optional Attenuator Field Installed

TOP VIEW Series Cooling & Hot Water

Flow Ring Tubing

Air Valve

A

D

B

C

TOP VIEW Series Electric Heat

1.

1.

2.

1.625" (41 mm)

All attenuators are the same length and width.

Sizes 01 and 02 units are smaller than attenuators.

Airflow Plenum Inlet

Optional Attenuator Field Installed

Flow Ring Tubing

Air Valve

A B

Electric Heater

D

G

F

C

B

B C A D E FAN SIZE (Elec. Heat Only)

3.25" (83 mm)

3.25" (83 mm)

3.25" (83 mm)

3.25" (83 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

41.154" (1041 mm)

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm)

26.75" (679 mm) 02SQ

06SQ, 07SQ

03SQ, 04SQ

05SQ 26.75" (679 mm)

20.75" (527 mm)

18.75" (476 mm)

27.25" (692 mm)

35.154 (740 mm)

23.875 (606 mm)

29.875" (759 mm)

28.966" (736 mm)

20.132" (511 mm)

Fan Inlet w/o Attenuator

Fan Inlet w/o Attenuator

F

C

E 2.

J

(Elec. Heat Only)

59.750” (1517 mm)

58.250" (1479 mm)

59.750" (1517 mm)

53.750" (1365 mm)

G(Elec. Heat Only)

19.00" (483 mm)

17.50" (445 mm)

19.00" (483 mm)

19.00" (483 mm)

J

VAV-SVX08E-EN 17

Unit Installation

Figure 13. Low-height parallel 08SQ/09SQ w/hot water or electric heat

31.65"(804 mm)

23.90"(607 mm)

13.00"(330 mm)

19.86"(504 mm)

AirflowPlenum Inlet


24.30"(617 mm)

PrimaryAirflow


13.80"(350 mm)

4.00"(102 mm)

23.10"(587 mm)

3.35"(85 mm) TOP VIEW

TOP VIEW3.35"

(85 mm)


31.65"(804 mm)

23.90"(607 mm)

13.00"(330 mm)

19.86"(504 mm)

AirflowPlenum Inlet


24.30"(617 mm)

PrimaryAirflow

13.80"(350 mm)

4.00"(102 mm)

23.10"(587 mm)

3.00"(76 mm)

Heater

Term

inal

Box

18 VAV-SVX08E-EN

Unit Installation

Figure 14. Low-height parallel 10SQ

PrimaryAirflow

AirValve

38.95"(989 mm)

1.625"(41 mm)

Flow RingTubing

5.625"(143 mm)

41.137"(1045 mm)


Optional Heater Terminal Box5.625"

(143 mm)

TOP VIEW

38.75"(984 mm)

PlenumInlet

VAV-SVX08E-EN 19

Unit Installation

Figure 15. Low-height series 08SQ/09SQ w/hot water or electric heatg

19.86"(504 mm)

3.35"(85 mm)

31.65"(804 mm)

12.85"(326 mm)

10.13"(257 mm)4.00"

(102 mm)

34.30"(871 mm)

10.13"(257 mm)

3.35"(85 mm)

4.00"(102 mm)

27.00"(686 mm)

20.00"(508 mm)

PrimaryAirflow

AirValve

AirflowPlenum Inlet


WaterCoil

PrimaryAirflow

Airflow

TOP VIEW

19.86"(504 mm)

3.35"(85 mm)

31.65"(804 mm)

12.85"(326 mm)

34.30"(871 mm)

3.35"(85 mm)

27.00"(686 mm)

20.00"(508 mm)

AirValve

AirflowPlenum Inlet


OptionalElectric Heater

Airflow

TOP VIEW

20 VAV-SVX08E-EN

Unit Installation

Figure 16. Low-height series 10SQ w/hot water or electric heat

31.65"(804 mm)

19.86"(504 mm)

AirflowPlenum Inlet


31.65"(804 mm)

PrimaryAirflow


10.12"(257 mm)

42.00"(1067 mm)

30.30"(770 mm)

3.35"(85 mm)

TOP VIEW


AirflowPlenum Inlet

19.45"(494 mm)

19.45"(494 mm)

19.86"(504 mm)

3.35"(85 mm)

3.50"(89 mm)

3.50"(89 mm)

31.65"(804 mm)

19.86"(504 mm)

AirflowPlenum Inlet


31.65"(804 mm)

PrimaryAirflow


10.12"(257 mm)

42.00"(1067 mm)

30.30"(770 mm)

3.35"(85 mm)

TOP VIEW


AirflowPlenum Inlet

19.45"(494 mm)

19.45"(494 mm)

19.86"(504 mm)

3.35"(85 mm)

3.50"(89 mm)

3.50"(89 mm)

1.92"(49 mm)

Term

inal

Box

Plenum Area

OptionalHeater

VAV-SVX08E-EN 21

Unit Installation

Note: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.


Figure 17. Attenuator installation - parallel units

Mounting Bracket


1. Attach attenuator as shown with provided mounting brackets.

Figure 18. Attenuator installation - series units


Mounting Bracket

1. Attach attenuator as shown with provided mounting brackets.

22 VAV-SVX08E-EN

Unit Installation

Notes: Bottom bracket not shown. Bottom bracket to be installed in same orientation on bottom of unit.


Bottom Access

An optional bottom access can be provided in the casing of fan powered series or parallel terminal unit. See Figure 21.

The 22 ga. door is lined with 1” 26 ga. dual wall insulation and thermally lined with 1” – 1 lb. density fiberglass insulation with a 3.85 R-value.

Each door includes 4 to 6 cam locs that are used to secure the door to the casing.

The cam loc engages a metal encapsulated frame on the unit that encloses the unit insulation to prevent air erosion.

The cam loc engagements are interlocked using a flat head screwdriver. Once unlocked the entire door assembly can be removed for access.

Figure 19. Attenuator installation - low-height parallel units

1. Attach attenuator to unit as shown with provided mounting brackets.

MOUNTING BRACKET

OPTIONAL ATTENUATORFIELD INSTALLED

Figure 20. Attenuator installation - low-height series units

1. Attach attenuator to unit as shown with provided mounting brackets.

MOUNTING BRACKET


MOUNTING BRACKET


MOUNTING BRACKET


Figure 21. Bottom access

VAV-SVX08E-EN 23

Unit Installation

Table 1. Single-duct units

Unit Size

VCCF (lbs/kg)

VCCF w/ Dual Wall (lbs/kg)

VCEF (lbs/kg)

VCEF w/Dual Wall

(lbs/kg)

VCWF 1-Row

(lbs/kg)

VCWF 2-Row

(lbs/kg)

VCWF3-Row

(lbs/kg)

VCWF4-Row

(lbs/kg)

VCWF 1-Row w/ Dual Wall (lbs/kg)

VCWF 2-Row w/ Dual Wall (lbs/kg)

VCWF3-Row w/Dual Wall(lbs/kg)

VCWF4-Row w/Dual Wall(lbs/kg)

4568

16/716/716/716/7

19/919/919/920/9

38/1738/1738/1738/17

48/2248/2248/2249/22

21/1021/1021/1021/10

22/1022/1022/1024/11

23/1123/1122/1024/11

24/1124/1124/1126/12

24/1124/1124/1125/11

25/1125/1125/1128/13

26/1226/1225/1128/13

27/1227/1227/1230/14

1012141624

22/1027/1232/1535/1652/24

27/1234/1541/1946/2163/29

46/2152/2460/2769/3184/38

60/2768/3180/3691/41106/48

29/1337/1744/2049/2270/32

32/1540/1848/2254/2477/35

32/1541/1951/2356/2576/35

36/1645/2055/2561/2882/37

34/1543/2053/2460/2781/37

37/1747/2157/2665/2988/40

37/1748/2260/2767/3087/40

41/1952/2464/2972/3393/42

Table 2. Dual-duct units

Unit Size VDDF (lbs/kg) VDDF w/Dual Wall (lbs/kg)

0505050606060508

54/2454/2454/2455/25

68/3168/3168/3168/31

0608051008080610

55/2556/2556/2556/25

69/3169/3170/3270/32

0810101006120812

57/2661/2857/2658/26

70/3274/3470/3271/32

1012121208141014

59/2760/2778/3579/36

72/3384/38102/46103/47

1214141408161016

80/3681/3779/3680/36

104/47105/48103/47104/47

121614161616

81/3782/3783/38

105/48105/48106/48

24 VAV-SVX08E-EN

Unit Installation

Table 3. Parallel fan-powered units

Unit Size

VPCF (lbs/kg)

VPCF w/Dual Wall (lbs/kg)

VPEF (lbs/kg)

VPEF w/Dual Wall (lbs/kg)

VPWF 1-Row (lbs/kg)

VPWF 2-Row (lbs/kg)

VPWF 1-Row w/Dual Wall

(lbs/kg)

VPWF 2-Row w/Dual Wall

(lbs/kg)

VPxF Attenuator (lbs/kg)

0502SQ0602SQ0603SQ0802SQ

81/3780/3683/3881/37

115/52114/52117/53115/52

110/550109/49112/51110/50

144/65143/65146/66144/65

92/4291/41105/4892/42

95/4394/43108/4995/43

126/57125/57139/63126/57

129/59128/58142/64129/59

46/2146/2148/2246/21

0803SQ0804SQ1002SQ1003SQ

83/3884/3882/3784/38

117/53118/54116/53118/54

112/51113/51111/50113/51

146/66147/67145/66147/67

105/48106/4893/42106/48

108/49109/4996/44109/49

139/63140/64127/58140/64

142/64143/65130/59143/65

48/2248/2246/2148/22

1004SQ1005SQ1006SQ1007SQ

85/3998/44114/52122/55

119/54132/60148/67156/71

114/52128/58144/65152/69

148/67162/73178/81186/84

107/49120/54127/58135/61

110/50123/56130/59138/63

141/64154/70161/73169/77

144/65157/71164/74172/78

48/2248/2254/2454/24

1203SQ1204SQ1205SQ1206SQ

85/3986/3999/45115/52

119/54120/54133/60149/68

114/52115/52129/59145/66

148/67149/68163/74179/81

107/49108/49121/55128/58

110/50111/50124/56131/59

141/64142/64155/70162/73

144/65145/66158/72165/75

48/2248/2248/2254/24

1207SQ1404SQ1405SQ1406SQ

123/5687/39100/45116/53

157/71121/55134/61150/68

153/69116/53130/59146/66

187/85150/68164/74180/82

136/62109/49122/55129/59

139/63112/51125/57132/60

170/77143/65156/71163/74

173/78146/66159/72166/75

54/2448/2248/2254/24

1407SQ1606SQ1607SQ

124/56117/53125/57

158/72151/68159/72

154/70147/67155/70

188/85181/82189/86

137/62130/59138/63

140/64133/60141/64

171/78164/74172/78

174/79167/76175/79

54/2454/2454/24

Table 4. Series fan-powered

Unit SizeVSCF

(lbs/kg)

VSCF w/ Dual Wall (lbs/kg)

VSEF (lbs/kg)

VSEF w/ Dual Wall (lbs/kg)

VSWF 1-Row

(lbs/kg)

VSWF 2-Row

(lbs/kg)

VSWF 1-Row

w/Dual Wall(lbs/kg)

VSWF 2-Row

w/Dual Wall(lbs/kg)

VSxF Attenuator (lbs/kg)

0402SQ0502SQ0602SQ0603SQ0604SQ

78/3578/3577/3576/3487/39

93/4293/4292/42100/45111/50

104/47104/47103/47105/48116/53

119/54119/54118/54129/59140/64

85/3985/3984/3888/4099/45

87/3987/3986/3992/42103/47

100/45100/4599/45112/51123/56

102/46102/46101/46116/53127/58

46/2146/2146/2148/2248/22

0802SQ0803SQ0804SQ1002SQ1003SQ

79/3677/3588/4081/3780/36

94/43101/46112/5196/44104/47

105/48106/48117/53107/49109/49

120/54130/59141/64122/55133/60

86/3989/40100/4588/4092/42

88/4093/42104/4790/4196/44

101/46113/51124/56103/47116/53

103/47117/53128/58105/48120/54

46/2148/2248/2246/2148/22

1004SQ1005SQ1006SQ1007SQ1203SQ

91/4192/42104/47117/5382/37

115/52116/53133/60146/66106/48

120/54121/55135/61148/67111/50

144/65145/66164/74177/80135/61

103/47104/47119/54132/6094/43

107/49108/49124/56137/6298/44

127/58128/58148/67161/73118/54

131/59132/60153/69166/75122/55

48/2248/2254/2454/2448/22

1204SQ1205SQ1206SQ1207SQ1404SQ

92/4294/43105/48118/5493/42

116/53118/54134/61147/67117/53

121/55123/56136/62149/68122/55

145/66147/67165/75178/81146/66

104/47106/48120/54133/60105/48

108/49110/50125/57138/63109/49

128/58130/59149/68162/73129/59

132/60134/61154/70167/76133/60

48/2248/2254/2454/2448/22

1405SQ1406SQ1407SQ1606SQ1607SQ

96/44106/48119/54107/49120/54

120/54135/61148/67136/62149/68

125/57137/62150/68138/63151/68

149/68166/75179/81167/76180/82

108/49121/55134/61122/55135/61

112/51126/57139/63127/58140/64

132/60150/68163/74151/68164/74

136/62155/70168/76156/71169/77

48/2254/2454/2454/2454/24

VAV-SVX08E-EN 25

Unit Installation

Table 5. Low-height parallel units

Unit SizeLPCF

(lbs/kg)

LPCF w/ Dual Wall (lbs/kg)

LPEF(lbs/kg)

LPEF w/ Dual Wall (lbs/kg)

LPWF1-Row

(lbs/kg)

LPWF2-Row

(lbs/kg)

LPWF 1-Row w/Dual Wall

(lbs/kg)

LPWF 2-Row w/DualWall

(lbs/kg)

LPxF Attenuator (lbs/kg)

0508SQ0608SQ0609SQ0808SQ

69/3168/3173/3369/31

89/4088/4093/4289/40

84/3883/3888/4084/38

104/47103/47108/49104/47

78/3577/3582/3778/35

81/3780/3685/3981/37

98/4497/44102/4698/44

101/46100/45105/48101/46

10/510/510/510/5

0809SQ0810SQ

14RT09SQ14RT10SQ

74/3490/4183/3897/44

94/43110/50103/47117/53

89/40105/4898/44112/51

109/49125/57118/54132/60

83/3899/4592/42106/48

86/39102/4695/43109/49

103/47119/54112/51126/57

106/48122/55115/52129/59

10/510/510/510/5

Table 6. Low-height series units

Unit SizeLSCF

(lbs/kg)

LSCF w/ Dual Wall (lbs/kg)

LSEF (lbs/kg)

LSEF w/ Dual Wall (lbs/kg)

LSWF1-Row

(lbs/kg)

LSWF2-Row

(lbs/kg)

LSWF 1-Row w/Dual Wall

(lbs/kg)

LSWF 2-Row w/Dual Wall

(lbs/kg)

LSxF Attenuator (lbs/kg)

0508SQ0608SQ0609SQ0808SQ

71/3270/3280/3671/32

86/3985/3995/4386/39

86/3985/3995/4386/39

101/45100/45110/50101/46

80/3679/3689/4080/36

82/3781/3791/4182/37

95/4394/43104/4795/43

97/4496/44106/4897/44

10/510/510/510/5

0809SQ0810SQ

14RT09SQ14RT10SQ

81/3795/4390/41105/48

96/44120/54105/48130/59

96/44120/54105/48130/59

111/50145/66120/54155/70

90/41111/5099/45121/55

92/42115/52101/46125/57

105/48136/62114/52146/66

107/49140/64116/53150/68

10/520/910/520/9

26 VAV-SVX08E-EN

Unit Setup

Fan Motor Amperage

Figure 22. Flow sensor P vs. airflow delivery

0.01

0.1

1

10

10 100 1,000 10,000

Airflow (CFM)

Flo

w S

enso

r D

iffer

entia

l Pre

ssur

e (in

ches

wat

er)

4

6 8"

5

10" 12" 14" 16"8" x 12"

16" x 24"

Table 7. Maximum ECM fan motor amperage (FLA)

Fan Size HP VAC 115 VAC 277 VAV

Parallel/Series 03SQ 1/3 4.5 2.4

Parallel/Series 04SQ 1/2 6.5 3.5

Parallel/Series 05SQ 1 10.1 5.4

Parallel/Series 06SQ 1 9.5 5.1

Low-height Parallel/Series 08SQ 1/2 2.0 1.1

Low-height Parallel/Series 09SQ 1/2 6.7 3.6

Low-height Series 10SQ 2 x 1/2 7.5 4.0

VAV-SVX08E-EN 27

Unit Setup

(SCR) Motor Speed Control Adjustment Procedure.

In order to make units more convenient and efficient to balance, an SCR (silicone control rectifier) is provided as standard on all fan-powered units.

The SCR is located on the side of the fan control box. To adjust the speed of the motor, the external knob must be rotated either clockwise or counterclockwise depending on the desired speed adjustment.

There is an internal potentiometer (Figure 23, p. 28) setting on the SCR controller that can be accessed by removing the control box cover. This internal potentiometer is set at the factory to the specific motor voltage.

It may be necessary to adjust this in the field depending on the building’s power factor.

Note: Do not set this potentiometer below the voltage of the fan motor.

Electrically Commutated Motor (ECM)

Trane offers an energy efficient ECM motor as a motor option. Balancing of an ECM motor is accomplished through electronic control adjustments on the ECM control board (see Figure 24, p. 28). Potentiometer settings for a multitude of CFM settings are given in Table 9, p. 29 thru Table 21, p. 41. Other potentiometer settings can be determined either by interpolating from these tables or by using the following equation:

CFMsetting = CFMmin + {(Potentiometer Setting) x [(CFMmax - CFMmin)/100]}

There is an LED on the ECM control board, which will blink one time for every 100 CFM of motor setting. For example, the LED on a unit set for 790 CFM will blink 7 times. The LED on a unit set for 800 CFM will blink 8 times.

Note: This feature only verifies that the CFM is set properly. This feature does not indicate at what speed the motor is actually running.

The ECM must be “load tested.” In other words, the fan must be connected to properly test the ECM.

Table 8. Maximum PSC fan motor amperage (FLA)

Fan Size HP VAC115 VAC

277 VAV

347 VAC 208

Parallel/Series 02SQ 1/8 1.6 0.7 .7 -

Parallel/Series 03SQ 1/3 4.3 1.6 1.4 -



Parallel/Series 06SQ 1/2 - 3.8 3.3 4.6

Parallel/Series 07SQ 1 - 4.7 3.8 6.6

Low-height Parallel/Series 08SQ 1/3 5.5 2.5 1.8 -

Low-height Parallel/Series 09SQ 1/3 5.5 2.5 1.8 -

Series Low-height 10SQ 2 x 1/8 11.0 5.0 3.5 -

Parallel Low-Height 10SQ 2 x 1/8 9.4 3.5 3.0

Figure 23. SCR (L) & internal potentiometer (R)

DO NOT SET THISPOTENTIOMETERBELOW THE VOLTAGEOF THE FAN MOTOR.

Max

208 v–277 v

347 v

120 v

Figure 24. ECM control board

28 VAV-SVX08E-EN

Unit Setup

Table 9. VPxF 03SQ ECM CFM

Motor Min CFM: 160Motor Max CFM: 1085

CFM L/sec % Setting

160170179188198

7680848993

12345

207216226235244

98102107111115

678910

254263272282291

120124129133137

1112131415

300310319328338

142146151155159

1617181920

347356366375385

164168173177181

2122232425

394403413422431

186190195199204

2627282930

441450459469478

208212217221226

3132333435

487497506515525

230234239243248

3637383940

534543553562571

252256261265270

4142434445

581590599609618

274278283287292

4647484950

627637646655665

296300305309314

5152535455

674683693702711

318323327331336

5657585960

721730739749758

340345349353358

6162636465

767777786795805

362367371375380

6667686970

814823833842852

384389393397402

7172737475

861870880889898

406411415419424

7677787980

908917926936945

428433437442446

8182838485

954964973982992

450455459464468

8687888990

10011010102010291038

472477481486490

9192939495

10481057106610761085

494499503508512

96979899100

Table 9. VPxF 03SQ ECM CFM (continued)


CFM L/sec % Setting

VAV-SVX08E-EN 29

Unit Setup



CFM L/sec % Setting

220233246259272

104110116122128

12345

285298311324337

135141147153159

678910

350363376389402

165171178184190

1112131415

415429442455468

196202208215221

1617181920

481494507520533

227233239245251

2122232425

546559572585598

258264270276282

2627282930

611624637650663

288294301307313

3132333435

676689702715728

319325331338344

3637383940

741754767780793

350356362368374

4142434445

806819832845859

381387393399405

4647484950

872885898911924

411417424430436

5152535455

937950963976989

442448454461467

5657585960

10021015102810411054

473479485491497

6162636465

10671080109311061119

504510516522528

6667686970

11321145115811711184

534540547553559

7172737475

11971210122312361249

565571577584590

7677787980

12621275128813021315

596602608614620

8182838485

13281341135413671380

627633639645651

8687888990

13931406141914321445

657663670676682

9192939495

14581471148414971510

688694700706713

96979899100



CFM L/sec % Setting

30 VAV-SVX08E-EN

Unit Setup



CFM L/sec % Setting

280296312327343

132140147155162

12345

359375391407423

170177184192199

678910

438454470486502

207214222229237

1112131415

518534549565581

244252259267274

1617181920

597613629645661

282289297304312

2122232425

676692708724740

319327334342349

2627282930

756772787803819

357364372379387

3132333435

835851867883898

394402409417424

3637383940

914930946962978

431439446454461

4142434445

9941009102510411057

469476484491499

4647484950

10731089110511201136

506514521529536

5152535455

11521168118412001216

544551559566574

5657585960

12311247126312791295

581589596604611

6162636465

13111327134213581374

619626634641649

6667686970

13901406142214381454

656664671678686

7172737475

14691485150115171533

693701708716723

7677787980

15491565158015961612

731738746753761

8182838485

16281644166016761691

768776783791798

8687888990

17071723173917551771

806813821828836

9192939495

17871802181818341850

843851858866873

96979899100



CFM L/sec % Setting

VAV-SVX08E-EN 31

Unit Setup



CFM L/sec % Setting

530546562577593

250258265273280

12345

609625641657673

287295302310317

678910

688704720736752

325332340347355

1112131415

768784799815831

362370377385392

1617181920

847863879895911

400407415422430

2122232425

926942958974990

437445452460467

2627282930

10061022103710531069

475482490497505

3132333435

10851101111711331148

512520527535542

3637383940

11641180119612121228

549557564572579

4142434445

12441259127512911307

587594602609617

4647484950

13231339135513701386

624632639647654

5152535455

14021418143414501466

662669677684692

5657585960

14811497151315291545

699707714722729

6162636465

15611577159216081624

737744752759767

6667686970

16401656167216881704

774782789796804

7172737475

17191735175117671783

811819826834841

7677787980

17991815183018461862

849856864871879

8182838485

18781894191019261941

886894901909916

8687888990

19571973198920052021

924931939946954

9192939495

20372052206820842100

961969976984991

96979899100



CFM L/sec % Setting

32 VAV-SVX08E-EN

Unit Setup

Table 13. VSxF 03SQ ECM CFM


CFM L/sec % Setting

200209218227236

9499103107112

12345

246255264273282

116120124129133

678910

291300309318327

137142146150154

1112131415

336346355364373

159163167172176

1617181920

382391400409418

180185189193197

2122232425

427436446455464

202206210215219

2627282930

473482491500509

223227232236240

3132333435

518527536546555

245249253257262

3637383940

564573582591600

266270275279283

4142434445

609618627636646

287292296300305

4647484950

655664673682691

309313318322326

5152535455

700709718727736

330335339343348

5657585960

745755764773782

352356360365369

6162636465

791800809818827

373378382386390

6667686970

836845855864873

395399403408412

7172737475

882891900909918

416420425429433

7677787980

927936945955964

438442446451455

8182838485

97398299110001009

459463468472476

8687888990

10181027103610451055

481485489493498

9192939495

10641073108210911100

502506511515519

96979899100

Table 13. VSxF 03SQ ECM CFM (continued)


CFM L/sec % Setting

VAV-SVX08E-EN 33

Unit Setup



CFM L/sec % Setting

275288300312325

130136142147153

12345

337350362374387

159165171177183

678910

399411424436449

188194200206212

1112131415

461473486498510

218223229235241

1617181920

523535548560572

247253258264270

2122232425

585597609622634

276282288293299

2627282930

646659671684696

305311317323328

3132333435

708721733745758

334340346352358

3637383940

770783795807820

363369375381387

4142434445

832844857869882

393399404410416

4647484950

894906919931943

422428434439445

5152535455

9569689809931005

451457463469474

5657585960

10181030104210551067

480486492498504

6162636465

10791092110411171129

509515521527533

6667686970

11411154116611781191

539544550556562

7172737475

12031215122812401253

568574579585591

7677787980

12651277129013021314

597603609615620

8182838485

13271339135213641376

626632638644650

8687888990

13891401141314261438

655661667673679

9192939495

14511463147514881500

685690696702708

96979899100



CFM L/sec % Setting

34 VAV-SVX08E-EN

Unit Setup



CFM L/sec % Setting

350367385402419

165173181190198

12345

436453470488505

206214222230238

678910

522539556573591

246254263271279

1112131415

608625642659676

287295303311319

1617181920

694711728745762

327335344352360

2122232425

779797814831848

368376384392400

2627282930

865882900917934

408416425433441

3132333435

95196898510031020

449457465473481

3637383940

10371054107110881106

489498506514522

4142434445

11231140115711741192

530538546554562

4647484950

12091226124312601277

570579587595603

5152535455

12951312132913461363

611619627635643

5657585960

13801398141514321449

651660668676684

6162636465

14661483150115181535

692700708716724

6667686970

15521569158616041621

732741749757765

7172737475

16381655167216891707

773781789797805

7677787980

17241741175817751792

814822830838846

8182838485

18101827184418611878

854862870878886

8687888990

18951913193019471964

895903911919927

9192939495

19811998201620332050

935943951959967

96979899100



CFM L/sec % Setting

VAV-SVX08E-EN 35

Unit Setup



CFM L/sec % Setting

700718737755773

330339348356365

12345

791809827846864

373382391399408

678910

882900918937955

416425433442451

1112131415

973991100910271046

459468476485493

1617181920

10641082110011181137

502511519528536

2122232425

11551173119112091227

545554562571579

2627282930

12461264128213001318

588596605614622

3132333435

13361355137313911409

631639648656665

3637383940

14271446146414821500

674682691699708

4142434445

15181536155515731591

717725734742751

4647484950

16091627164616641682

759768777785794

5152535455

17001718173617551773

802811820828837

5657585960

17911809182718461864

845854862871880

6162636465

18821900191819361955

888897905914922

6667686970

19731991200920272046

931940948957965

7172737475

20642082210021182136

97498399110001008

7677787980

21552173219122092227

10171025103410431051

8182838485

22452264228223002318

10601068107710851094

8687888990

23362355237323912409

11031111112011281137

9192939495

24272445246424822500

11461154116311711180

96979899100



CFM L/sec % Setting

36 VAV-SVX08E-EN

Unit Setup

Table 17. LPxF 08SQ ECM CFM


CFM L/sec % Setting

100103107111114

4749505254

12345

118121125129132

5657596162

678910

136140143147151

6466686971

1112131415

154158162165169

7375767880

1617181920

172176180183187

8183858788

2122232425

191194198202205

9092939597

2627282930

209212216220223

99100102104105

3132333435

227231234238242

107109111112114

3637383940

245249253256260

116117119121123

4142434445

263267271274278

124126128129131

4647484950

282285289293296

133135136138140

5152535455

300303307311314

142143145147148

5657585960

318322325329333

150152154155157

6162636465

336340344347351

159160162164166

6667686970

354358362365369

167169171172174

7172737475

373376380384387

176178179181183

7677787980

391394398402405

184186188190191

8182838485

409413416420424

193195196198200

8687888990

427431435438442

202203205207209

9192939495

445449453456460

210212214215217

96979899100

Table 17. LPxF 08SQ ECM CFM (continued)


CFM L/sec % Setting

VAV-SVX08E-EN 37

Unit Setup

Table 18. LPxF 09SQ ECM CFM


CFM L/sec % Setting

250258265273281

118122125129133

12345

289297305312320

136140144147151

678910

328336344352359

155159162166170

1112131415

367375383391399

173177181184188

1617181920

406414422430438

192196199203207

2122232425

446453461469477

210214218221225

2627282930

485493500508516

229232236240244

3132333435

524532540547555

247251255258262

3637383940

563571579587594

266269273277281

4142434445

602610618626634

284288292295299

4647484950

641649657665673

303306310314317

5152535455

680688696704712

321325329332336

5657585960

720727735743751

340343347351354

6162636465

759767774782790

358362365369373

6667686970

798806814821829

377380384388391

7172737475

837845853861868

395399402406410

7677787980

876884892900908

414417421425428

8182838485

915923931939947

432436439443447

8687888990

955962970978986

450454458462465

9192939495

9941002100910171025

469473476480484

96979899100

Table 18. LPxF 09SQ ECM CFM (continued)


CFM L/sec % Setting

38 VAV-SVX08E-EN

Unit Setup

Table 19. LSxF 08SQ ECM CFM


CFM L/sec % Setting

100103107111114

4749505254

12345

118121125129132

5657596162

678910

136140143147151

6466686971

1112131415

154158162165169

7375767880

1617181920

172176180183187

8183858788

2122232425

191194198202205

9092939597

2627282930

209212216220223

99100102104105

3132333435

227231234238242

107109111112114

3637383940

245249253256260

116117119121123

4142434445

263267271274278

124126128129131

4647484950

282285289293296

133135136138140

5152535455

300303307311314

142143145147148

5657585960

318322325329333

150152154155157

6162636465

336340344347351

159160162164166

6667686970

354358362365369

167169171172174

7172737475

373376380384387

176178179181183

7677787980

391394398402405

184186188190191

8182838485

409413416420424

193195196198200

8687888990

427431435438442

202203205207209

9192939495

445449453456460

210212214215217

96979899100

Table 19. LSxF 08SQ ECM CFM (continued)


CFM L/sec % Setting

VAV-SVX08E-EN 39

Unit Setup



CFM L/sec % Setting

240247255262269

113117120123127

12345

276283290298305

130134137140144

678910

312319326333341

147151154157161

1112131415

348355362369376

164167171174178

1617181920

384391398405412

181184188191195

2122232425

419427434441448

198201205208211

2627282930

455462470477484

215218222225228

3132333435

491498505513520

232235239242245

3637383940

527534541548556

249252255259262

4142434445

563570577584592

266269272276279

4647484950

599606613620627

283286289293296

5152535455

635642649656663

299303306310313

5657585960

670678685692699

316320323327330

6162636465

706713721728735

333337340343347

6667686970

742749756764771

350354357360364

7172737475

778785792799807

367371374377381

7677787980

814821828835842

384387391394398

8182838485

850857864871878

401404408411415

8687888990

885893900907914

418421425428431

9192939495

921928936943950

435438442445448

96979899100



CFM L/sec % Setting

40 VAV-SVX08E-EN

Unit Setup



CFM L/sec % Setting

400414428443457

189196202209216

12345

471485499513527

222229236242249

678910

542556570584598

256262269276282

1112131415

612626641655669

289296302309316

1617181920

683697711725740

322329336342349

2122232425

754768782796810

356362369376382

2627282930

824838853867881

389396402409416

3132333435

895909923937952

422429436442449

3637383940

96698099410081022

456462469476482

4142434445

10361051106510791093

489496502509516

4647484950

11071121113511501164

523529536543549

5152535455

11781192120612201234

556563569576583

5657585960

12491263127712911305

589596603609616

6162636465

13191333134813621376

623629636643649

6667686970

13901404141814321447

656663669676683

7172737475

14611475148915031517

689696703709716

7677787980

15311545156015741588

723729736743749

8182838485

16021616163016441659

756763769776783

8687888990

16731687170117151729

789796803809816

9192939495

17431758177217861800

823829836843850

96979899100



CFM L/sec % Setting

VAV-SVX08E-EN 41

Wiring Diagrams

Note: See programming guides listed below for detailed wiring information on the following:

Heaters with Contactors

UCM 4.2: VAV-SVX01*-EN UC400: VAV-SVX07*-EN VV550: VAV-SVP01*-EN

Figure 25. Single-duct units (typical of single phase voltages - 1 leg)

42 VAV-SVX08E-EN

Wiring Diagrams

Figure 26. Single-duct units (typical of single phase voltages - 2 leg)

VAV-SVX08E-EN 43

Wiring Diagrams

Figure 27. Single-duct units (typical of three phase voltages)

44 VAV-SVX08E-EN

Wiring Diagrams

Figure 28. Fan-powered units (electronic or DDC/UCM)

VAV-SVX08E-EN 45

Wiring Diagrams

Figure 29. Fan-powered units (pneumatic controls)

46 VAV-SVX08E-EN

Wiring Diagrams

Figure 30. Fan-powered control boxes

FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

EXTERNAL TO CONTROL BOX.

OPTIONAL OR ALTERNATE CIRCUITRY

DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED

DETERMINED BY MOTOR VOLTAGE ON ORDER.

FUSE IS OPTIONAL.

VOLTAGE FOUND ON UNIT NAMEPLATE.

6.

5.

4.

CAPACITOR IS INSTALLED ON FAN HOUSING.

FACTORY INSTALLEDBY OTHERS

3.

2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK NO

NO

NC

C

6.

6.

6.

2. 2.

2.

5. 5.

5.

3. 3.

3.

4. 4.

4.

}

BK

24V1 3

2 4

R

MOTORRELAY

BR

TRANSFORMER

FUSE

BK

BK W

GROUNDSCREW

GREEN

DISCONNECTSWITCH

BK W

L1 N

24V BKBL

Y

CONTROLLER

CAPACITOR

BR BR

FANMOTOR

BLOCKTERMINAL

W BK

BRR

BK

CONTROLSPEEDMOTOR

W

W

W-C

OM

BK

LINE VOLTAGE

OR FROM HEATER TERMINAL

TO VAV

Fan-powered Control Boxwith Electronic or DDC Controls

CAPACITOR MOTORFAN

SWITCHDISCONNECT


LINE VOLTAGE

Fan-powered Control Boxwith Pneumatic ControlsDuct Pressure Switch Option

BRBR

TERMINAL

W-C

OM

BKW

BK

BLOCK

R

24V1 3

TRANSFORMER

MOTOR

BK

BR

RELAY

24V BK

2 4

GREENGROUND

SCREW

CONTROLSPEEDMOTOR

W

W

FUSE

BK

BK

BK

W

W

BK

L1 N

DUCT PRESSURESWITCH

CAPACITOR MOTORFAN

Fan-powered Control Boxwith Pneumatic Controls

BRBR

P.E. SWITCH

TERMINAL

W-C

OM

W BK

BLOCK

BK

CONTROLSPEEDMOTOR

W

W

LINE VOLTAGE

SWITCHDISCONNECT


GREENGROUND

SCREW

FUSE

BK

BK

BK

BK

W

W

L1 N

BK

C

NO

NC

DUCT PRESSURE MAIN CONTROL

FAN CONTROL BOX FAN CONTROL BOX

FAN CONTROL BOX

CAPACITORS BEFORE SERVICING.DISCHARGE MOTOR START/RUN

FAILURE TO DISCONNECT POWERBEFORE SERVICING CAN CAUSESEVERE PERSONAL INJURY OR DEATH.

UNIT TERMINALS ARE NOT DESIGNEDTO ACCEPT OTHER TYPES OF

FAILURE TO DO SO MAY CAUSEDAMAGE TO THE EQUIPMENT.

USE COPPER CONDUCTORS ONLY!

CONDUCTORS.

SERVICING.REMOTE DISCONNECTS BEFORE

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG ALL ELECTRIC POWER INCLUDING

WARNINGWARNING

CAUTIONCAUTION

}

}

}

VAV-SVX08E-EN 47

Wiring Diagrams

Figure 31. Fan-powered units with ECM






FUSE IS OPTIONAL.


5.

4.

3.


2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK NO

5.

3.

4.

4.

4.

RED

NEUT.

W BK G R

RED

24V

BL

Y

RBK

NEUT.

RED

GW

RED

24V

BL

Y

1 24V 3

2 4

RED RED

GW BK R

24VNEUT.

BK

BOARDECM

ECMBOARD

MOTORRELAY

ECMBOARD

}

Fan-powered Control Box w/ ECM with Electronic or DDC Controls(Depending on the size of the unit, the ECM board may or may not be locatedin the fan control box.)


LINE VOLTAGE

Fan-powered Control Box with Pneumatic Controls

LINE VOLTAGE



CORRECTION

PRESSURE

SWITCH

DUCT

C

NC

TRANSFORMER

BK 24V

Y

BL

CHOKE

BL

NO BL

DISCONNECT

BK

SWITCH3.

FUSE

FACTORPOWER

W

BK W

SCREW

2.

GROUNDGREEN

GR

TERMINAL

BK

BLOCK

MOTOR

FAN

Fan-powered Control Box w/ ECM with Pneumatic ControlsDuct Pressure Switch Option

P.E. SWITCH

DISCONNECTSWITCH

C

FUSE

NC

CORRECTION CHOKE

TRANSFORMER

NO

BK BL

Y

24V

BK

POWER FACTOR

BLOCK

2.

W

BK W

FANMOTOR

TERMINAL

GR

GREENGROUNDSCREW

BK

5.

CORRECTION CHOKE

POWER FACTOR

FAN CONTROL BOX

TRANSFORMER

BK W

DISCONNECT

FUSE

3. W

2.

SWITCH

3.

24V

BL

Y

BLOCKTERMINAL


GR

L1

GROUNDSCREW

GREEN

N

LINE VOLTAGE

BKW

MOTORFAN

CONTROLLER

TO VAV

Y

BK

FAN CONTROL BOX

FAN CONTROL BOX






CONDUCTORS.


HAZARDOUS VOLTAGE!


CAUTIONCAUTION

WARNINGWARNING

} }

}

48 VAV-SVX08E-EN

Wiring Diagrams

Figure 32. Fan-powered low-height units






FUSE IS OPTIONAL.


6.

5.

4.


2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK NO

6.

BLOCKTERMINAL

24V

24V

1

W

2

W

3

4

CAPACITOR IS INSTALLED ON FAN HOUSING.3.

Fan-Powered Low-Height Control Box with Electronic or DDC Controls

Fan-Powered Low-Height Control Box with Pneumatic Controls


Fan-Powered Low-Height Control Box with Pneumatic ControlsDuct Pressure Switch Option

BR

MOTOR

CONTROL

BLOCKTERMINAL

SPEED

P.E. SWITCH

CNC

NO

BK

BK

FUSE

BK

4.

SWITCH

DISCONNECT

BK

W

2.

GREEN

SCREW

GROUND

W

L1 N

2.

BR3.

FAN CONTROL BOX

W

BR

W

W

W W

BR

CAPACITOR W

CAPACITORBK

BK

MOTORFAN

3.

MOTOR 2(SIZE 10 ONLY)

FAN


LINE VOLTAGE 5.

CAPACITOR

MOTOR

CONTROL

MOTOR

RELAY

SPEED

NO

PRESSURE

SWITCH

DUCT

BL C

NC TRANSFORMER

BL Y

FUSE

BK

BK

L1

DISCONNECT

BK

BK

SWITCH

SCREW

GROUND

2.

N

GREEN

BR

FAN CONTROL BOX

BL

BK

BK

W

W

BK

W W

BR

2.

BR

W

BRW

BK

3.

MOTOR

FAN

CAPACITOR

3.

LINE VOLTAGE


5.

MOTOR

W or BR

24V1

R

3

BR

FUSE

4.

TERMINAL

RELAY

MOTOR2

BK

BK

4

BK WBR

BLOCK

SWITCH

DISCONNECT

SCREW

GROUND

GREEN

WBK

2.

L1 N

CONTROL

SPEED

MOTOR

BR

2.

BR

CAPACITOR

3.

TRANSFORMER

FAN CONTROL BOX

TO VAV

R

BR

BK 24V

BL

Y

W

W

W W

W BK

WBK

BR

CAPACITOR

FAN

BR

3.


LINE VOLTAGE5.

CONTROLLER

BK

(SIZE 10 ONLY)MOTOR 2

FAN


FAN

4.

6.

CAUTIONCAUTION

WARNINGWARNING

}

BR

UNIT TERMINALS ARE NOT DESIGNEDTO ACCEPT OTHER TYPES OFCONDUCTORS.



HAZARDOUS VOLTAGE!



REMOTE DISCONNECTS BEFORE

DISCHARGE MOTOR START/RUN CAPACITORS BEFORE SERVICING.

SERVICING.

}

}

VAV-SVX08E-EN 49

Wiring Diagrams

Figure 33. Fan-powered low-height units with ECM






FUSE IS OPTIONAL.


5.

4.

3.


2.

NOTES:

1.

NO

P.E. SWITCH-2

CC

P.E. SWITCH-1

BK

NC

BK

NC

BK NO

5.

W GBK R

NEUT.

RED

24V

RED

BL

NEUT.

RED

24V

RED

RBKW G

BL

BL

4

W G RBK

NEUT.

RED

BK

24V

RED

24V 31

2

BOARDECM

BOARDECM

MOTORRELAY

BOARDECM


LINE VOLTAGE

Fan-Powered Low-Height Control Box w/ ECM with Pneumatic Controls


Fan-Powered Low-Height Control Box w/ ECM with Pneumatic ControlsDuct Pressure Switch Option

(SIZE 10 ONLY)

DISCONNECTSWITCH

FUSE

3.

TRANSFORMER

BK

BLOCKTERMINAL

W

2.

24V

BL

Y

BK W

FANMOTOR

GR

GREENGROUNDSCREW

4.

W BK BK

W

MOTOR 2FAN

TO VAV


LINE VOLTAGE

MOTOR

BL

DUCT

SWITCH

PRESSURE

TRANSFORMER

BLBK 24V

Y

BL

C

NC

NO

FUSE

3.

BK

BK

DISCONNECTSWITCH

2.

W

W

SCREWGROUNDGREEN

GR

W BK

4.

Y

BK

TERMINALBLOCK

W

FAN FAN


CONTROLLER

NO

P.E. SWITCH

C

NC

DISCONNECTSWITCH

FUSE

3.

BK W

TRANSFORMER

BK 24V

BL

Y

BLOCKTERMINAL

2.

W

GROUNDSCREW

GREEN

BKW

GR

4.FAN

MOTOR

Y

WBK


FANLINE VOLTAGE


5.

Fan-Powered Low-Height Control Box w/ ECM with Electronic or DDC Controls(Depending on the size of the unit, the ECM board may or may not be locatedin the fan control box.)

Y

CAUTIONCAUTION

WARNINGWARNING

}

}

FAN CONTROL BOX FAN CONTROL BOX

FAN CONTROL BOX






CONDUCTORS.


HAZARDOUS VOLTAGE!


}

}

50 VAV-SVX08E-EN

Maintenance

Periodic maintenance of the VariTrane product is minimal, but necessary for efficient operation. Routine maintenance consists of inspecting/replacing the air filters of the fan-powered terminals.

Motors

Both the PSC (permanent split capacitor) and the ECM (Electrically Commutated Motor) require no lubrication during its normal life of operation.

Fan Wheel

Periodically, the fan wheel should be inspected for dirt or debris and cleaned as necessary.

Filter

The filter on fan-powered terminals will need to be inspected/replaced routinely depending on the environmental conditions of the plenum.

Filter Change Out

• To remove the filter, turn each of the filter retaining clips 90° (CW or CCW)

• Remove the filter and replace with new filter of the same frame size.

• Return the filter clips to their retainng position by turning them 90° (CW or CCW) back to their original position.

Water Coil

Water coils should be inspected and the fins should be cleaned periodically.

Water coils have been provided with an access panel as standard to assist with inspection and cleaning.

Fan Motor Replacement

Standard height fan-powered series and parallel fan motors are replaceable through the filter opening and the standard sliding side access panel. To access the fan motor, the fan housing must be detached by removing the mounting bolts that hold the housing to the fan board. Removing the entire housing allows the fan motor, fan housing, and fan wheel to be re-aligned on a workbench or floor and prevent any possible fan wheel rubbing that may occur. Removing the housing will provide access to the motor shaft set screw that holds the fan wheel to the motor shaft.

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN.

Figure 34. Standard motor removal

VAV-SVX08E-EN 51

Maintenance

The low-height fan assembly was designed with an inlet ring that assists with removal of the fan motor. To access the fan motor assembly, the bottom panel must be removed. The inlet ring is held in place by six bolts and three motor mount bolts. Remove these bolts and the motor and fan wheel will come out of the fan housing.

SCR Assembly

SCR solid state relays are used to switch a single heater stage on and off. An intelligent (Master) relay is used for all single phase applications. For three phase applications, a Master-Slave configuration is used to switch two legs of three phase power to the heater stage. The Master Relay controls one leg independently, and provides a control signal to the Slave Relay, which controls the second leg.

Every Master or Master/Slave relay combination is mounted on a heat sink to prevent the relays from overheating during normal operation. The SCR assembly must always be mounted with the heat sink fins oriented vertically (See Figure 36, p. 52), with a minimum clearance of ½" on all sides of the heat sink for cooling. Where additional cooling slots are provided in the heater, the VAV unit must be mounted with a minimum of 1" clearance in front of the slots.

When the 0-10 VDC control voltage is present at the Master relay in both single and three phase applications, an "ON" indicating LED light on the Master relay will blink continually (approximately 0.5 seconds on, 1.0 seconds off). If the load side voltage is also present at the relay(s), the Master relay LED and the Slave relay LED blink rate will increase as the control signal increases. When the control signal reaches a maximum of 10VDC, all LEDs will be lit continuously, indicating that the relays are full-open and continuously conducting. If the control signal is present in three phase applications while the load side voltage is not, only the Master relay LED will light and the blink rate will be constant.

If the SCR assembly does not appear to be functioning properly, verify that all required voltages are present and all that all wiring is properly connected. If all these conditions are verified, and the SCR LED(s) does not light and/or the SCR relay(s) does not conduct, the entire SCR heat sink assembly should be changed out. Individual Master or Slave relays should not be replaced.

Figure 35. Low-height motor removal

Figure 36. Typical heat sink fin orientation

Bottom View

52 VAV-SVX08E-EN

Installation of Diffusers

General

All units must be installed upright and level as indicated bythe arrow on the side of the units. Return air slots shouldbe placed perpendicular and offset to the slot diffusers toavoid short-circuiting of air distribution patterns.

Place the unit in its approximate final position and checkthat it is upright and level. For single-slot units, engagethe back of the diffuser over the t-bar with an edge andboth ends resting on the t-bar. For double-slot units,slide the unit over the t-bar. For center-notch units, placediffuser over the t-bar, straddling it across a t-bar andresting on the units ends.

If the unit has a fire damper, make sure that the damper isstill fully open. Diffuser discharge must always be flushwith the ceiling tiles to assure the proper airflow (Coandaeffect).

Diffusers require specific installation information whenmounting to a desired ceiling type. Select the ceiling typethat closely matches the job site application and use thefollowing procedures.

T-Bar Ceiling

Finish installation of the diffuser in t-bar ceiling. (SeeFigure 37, p. 53.) Follow these procedures before theceiling construction is completed.

1. Position the diffuser at each end resting directly on thestructural t-bar for support and the t-bar fitting into thechannel provided at the unit discharge air throw.

2. A ceiling tile support flange is provided on each side ofthe discharge slot of the unit.Trim ceiling tileapproximately 1½ inches each to allow for width ofdischarge slot. For revealed edge ceilings, tile must becut in a “Z” pattern.

3. Install ceiling tiles in usual manner with cut edgesresting on the flanges of the air slot.

Concealed Spline Ceiling

Follow these procedures to finish installation of controland satellite diffusers and concealed spline for suspensionceilings before completing the ceiling construction(Figure 38, p. 53).

Place the units in their approximate final positions. If usingthe trim angle diffuser, its slots must be even with thespline level. If applying the trim accessory, the bottom ofthe diffuser must be level with the finished ceiling.

If installing the trim accessory, insert the trim into theceiling opening from below and engage the diffuser slot tothe trim t-bar structure. With bottom flange of trimaccessory against the ceiling, and using the pre-drilledholes in the flange as a guide, drill holes in the flange of thediffuser. Join the diffuser and trim accessory with self-taping sheet metal.

Figure 37. Diffuser installation in t-bar ceiling

Figure 38. Diffuser with trim accessory installation in

concealed spline ceiling

VAV-SVX08E-EN 53

Installation of Diffusers

Drywall/Plaster Ceiling

Finish installation of diffusers in plaster ceiling. Followthese procedures before completing the ceilingconstruction (Figure 39, p. 54).

1. Suspend the units above the intended ceiling level andtheir approximate horizontal positions and finishrunning flexible ductwork.

2. After drywall and/or plaster is installed, cut openings toreceive the diffuser air outlets. Also, allow for accessopenings to complete installation and service of theunit.

3. Slide the trim accessory up and into the ceilingopening. Using the rim accessory as a template, drillfour guide holes in the lip of the diffuser slot. Lowerunit onto trim frame and attach with sheet metalscrews.

Note: The bottom of the throat section must be parallel tothe ceilings for proper air distribution.

NOTICE:

Equipment Damage!

Do not install trim frame into ceiling using screws.When diffuser is placed on the trim frames, it will pullout.

Figure 39. Diffuser with trim accessory installation in

plaster ceiling

Plaster trim frame attaches with 2–4tension clips on the side of the diffuser.

Trim Accessory

Diffuser Flange

54 VAV-SVX08E-EN

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VAV-SVX08E-EN 16 Sep 2014

Supersedes VAV-SVX08D-EN (27 Jun 2013)

installation, operation, and maintenance · all varitrane vav models with pneumatic, electronic,...

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