f r a nt r4h4 e - hvacdirect.comrefrigerant tubes* (in. od) rated vapor 5/8 5/8 3/4 3/4 7/8 7/8...

Specifications subject to change without notice. 428 65 6008 00 2/23/15

ENVIRONM

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LLY S

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ERANT

EFFICIENT 14 SEER HEAT PUMPENVIRONMENTALLY SOUND R−410A REFRIGERANT1−1/2 THRU 5 TONS SPLIT SYSTEM208 / 230 Volt, 1−phase, 60 HzREFRIGERATION CIRCUIT

� Scroll compressors on all models� Suction line accumulator factory installed� Integrated solid state control with Time−Temperature

Defrost� High and Low pressure switches� Copper tube / aluminum fin coilEASY TO INSTALL AND SERVICE

� Easy Access service valves on all models� External high and low refrigerant service ports� Only two screws to access control panel� Factory charged with R−410A refrigerantBUILT TO LAST

� Painted cabinet finish over galvanized steel� Coated inlet grille with 2” (51mm) spacing standard,

alternate models available with 3/8” (10mm) grille spacingfor extra protection

LIMITED WARRANTY*

� 5 year parts limited warranty (including compressor andcoil)

Use of the AHRI Certified TM Mark indic-ates a manufacturer’s participation in theprogram. For verification of certificationfor individual products, go towww.ahridirectory.org .

− With timely registration, an additional 5 year parts limited warranty (including compressor and coil)* For residential applications only. See warranty certificate for complete details and restrictions, including warranty

coverage for other applications.

ModelNumber

Size(tons)

NominalBtu/hr

Min. CircuitAmpacity

Max. Fuseor Breaker

Operating Dimensionslength x width x height

inches (mm)

Operating/Ship Weightlbs. (kg)

R4H418AKBR4H418GKB 1½ 18,000 11.8 20

23−1/8 x 23−1/8 x 35−1/4(587 x 587 x 895)

136 / 166(61 / 75)

R4H424AKBR4H424GKB 2 24,000 17.7 25

25−3/4 x 25−3/4 x 35−1/4(654 x 654 x 895)

144 / 175(65 / 79)

R4H430AKBR4H430GKB 2½ 30,000 20.8 30

31−3/16 x 31−3/16 x 31−13/16(792 x 792 x 808)

158 / 180(72 / 82)

R4H436AKBR4H436GKB 3 36,000 20.4 35

31−3/16 x 31−3/16 x 28−7/16(792 x 792 x 722)

170 / 201(77 / 91)

R4H442AKBR4H442GKB 3½ 42,000 25.7 40

31−3/16 x 31−3/16 x 39−1/8(792 x 792 x 994)

201 / 235(91 / 107)

R4H448AKBR4H448GKB 4 48,000 28.7 50

31−3/16 x 31−3/16 x 28−7/16(792 x 792 x 722)

197 / 232(89 / 105)

R4H460AKBR4H460GKB 5 60,000 34.1 50

31−3/16 x 31−3/16 x 31−13/16(889 x 889 x 808)

212 / 248(96 / 113)

A = Standard Grille, 2” (51mm) spacingG = Coil Guard Grille, 3/8” (10mm) spacing

R4H4Product Specifications

PRODUCT SPECIFICATIONS Split System Heat Pump: R4H4

2 428 65 6008 00Specifications subject to change without notice.

OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single phase)Digit Position: 1 2 3 4 5, 6 7 8 9 10 11 12

Example Part Number: R 4 H 4 18 G K B 1 0 0Product Family

4 = R−410A REFRIGERANTA = Air ConditionerH = Heat Pump TYPE

4 = 14 SEER NOMINAL EFFICIENCY18 = 18,000 BTUH = 1−1/2 tons

24 = 24,000 BTUH = 2 tons

30 = 30,000 BTUH = 2−1/2 tons

36 = 36,000 BTUH = 3 tons

42 = 42,000 BTUH = 3−1/2 tons

48 = 48,000 BTUH = 4 tons

60 = 60,000 BTUH = 5 tons NOMINAL CAPACITY

A = Standard 2” (51mm) spacingG = Coil Guard Grille, 3/8” (10mm) spacing FEATURES

K = 208/230−1−60 VOLTAGE

Sales Code

Engineering Revision

Extra Digit

Extra Digit

ACCESSORIES PART NUMBER IDENTIFICATION GUIDEDigit Position: 1 2 3 4 5 6, 7 8, 9 10, 11

Example Part Number: N A S A 0 0 1 01 C H

N = Non−Branded BRANDING

A = Accessory PRODUCT GROUP

S = Split System (AC & HP) KIT USAGEA = OriginalB = 2nd Generation MAJOR SERIES0 = Generic or Not Applicable

2 = R−22

4 = R−410A REFRIGERANTProduct Identifier Number

Package Quantity

Type of Kit(Example: CH = Crankcase Heater)



PHYSICAL DATAUNIT SIZE SERIES 18(A,G)KB 24(A,G)KB 30(A,G)KB 36(A,G)KB 42(A,G)KB 48(A,G)KB 60(A,G)KBCompressor Type ScrollREFRIGERANT R−410A Control TXV (R−410A Hard Shutoff) Charge lb (kg) 5.3 (2.4) 5.6 (2.5) 6.4 (2.9) 7.67 (3.48) 8.25 (3.74) 8.68 (3.94) 10.6 (4.81)COND FAN Forward Swept or Propeller Type, Direct Drive Air Discharge Vertical

Air Qty (CFM) 1700 2196 3365 1200 3800 3365 4050 Motor HP 1/12 1/10 1/4 1/5 1/4 1/4 1/4 Motor RPM 1100 1100 1100 1100 1100 1100 800VALVE CONNECT. (In. ID) Vapor 5/8 5/8 3/4 3/4 7/8 7/8 7/8 Liquid 3/8REFRIGERANT TUBES* (In. OD) Rated Vapor 5/8 5/8 3/4 3/4 7/8 7/8 1−1/8 Max Liquid Line 3/8

*Units are rated with 25 ft (7.6 m) of lineset length. See Vapor Line Sizing and Cooling Capacity Loss table when using other sizes and lengths of lineset.Note: See unit Installation Instruction for proper installation.

ELECTRICAL DATA

UNIT SIZE V/PH

OPER VOLTS* COMPR FAN

MCA

MAXFUSE** orCKT BRK

AMPSMAX MIN LRA RLA FLA

18

208/230/1 253 197

48.0 9.0 0.50 11.8 20

24 62.9 10.9 0.60 14.2 25

30 72.5 13.5 1.40 16.9 30

36 75.0 14.7 1.10 19.5 30

42 105.1 18.1 1.40 24.0 40

48 108.0 19.0 1.40 25.2 40

60 144.2 24.4 1.52 32.0 50

* Permissible limits of the voltage range at which the unit will operate satisfactorily� If wire is applied at ambient greater than 30�C, consult table 310−16 of the NEC (NFPA 70). The ampacity of non−metallic−sheathed cable (NM),

trade name ROMEX, shall be that of 60�C conditions, per the NEC (NFPA 70) Article 336−26. If other than uncoated (no−plated), 60 or 75�C insulation, copper wire (solid wire for 10 AWG or smaller, stranded wire for larger than 10 AWG) is used, consult applicable tables of the NEC (NFPA 70).

� Length shown is as measured 1 way along wire path between unit and service panel for voltage drop not to exceed 2%.** Time−Delay fuse.FLA − Full Load AmpsLRA − Locked Rotor AmpsMCA − Minimum Circuit AmpsRLA − Rated Load AmpsNOTE: Control circuit is 24−V on all units and requires external power source. Copper wire must be used from service disconnect to unit. All motors/compressors contain internal overload protection.Complies with 2007 requirements of ASHRAE Standards 90.1

A−WEIGHTED SOUND POWER

UNIT SIZE

STANDARDRATING(dBA)

TYPICAL OCTAVE BAND SPECTRUM (dBA, without tone adjustment)

125 250 500 1000 2000 4000 8000

18 69 45 48 56 62 55 53 47

24 76 46 56 59 63 63 60 55

30 77 52 62 67 68 65 62 55

36 77 51 62 66 69 64 61 53

42 76 49 61 63 65 62 60 52

48 79 53 66 69 71 67 64 57

60 73 50 63 62 63 60 58 52

NOTE: Tested in accordance with AHRI Standard 270−08 (not listed in AHRI).

A−WEIGHTED SOUND POWER WITH SOUND HOODUNIT SIZE

STANDARDRATING

TYPICAL OCTAVE BAND SPECTRUM (dBA, without tone adjustment)

125 250 500 1000 2000 4000 8000

18 68 47 48 56 61 55 52 46

24 74 47 57 59 62 61 58 51

30 77 52 62 67 67 65 62 54

36 76 52 62 66 67 64 60 52

42 74 50 61 63 64 61 58 49

48 79 54 66 69 70 67 64 56

60 73 51 64 62 63 59 56 49

NOTE: Tested in accordance with AHRI Standard 270−08 (not listed in AHRI).



CHARGING SUBCOOLING (TXV−TYPE EXPANSION DEVICE)UNIT SIZE-SERIES REQUIRED SUBCOOLING °F (°C)

18 11 (6.1)

24 11 (6.1)

30 10 (5.6)

36 10 (5.6)

42 10 (5.6)

48 14 (7.7)

60 15 (8.3)

HP ONLY REPLACEMENT WITH PISTON INDOORSWhen the R4H4 is used as a replacement component in a system with a piston fan coil, use the indoor piston size specified below:

UNIT SIZEPISTON SIZE

FEM4P FMA4 FM(C,U)4P

18 0.052 0.050 0.050

24 0.057 0.057 0.056

30 0.067 0.070 0.067

36 0.070 0.072 0.069

42 0.078

48 0.084

60

VAPOR LINE SIZING AND COOLING CAPACITY LOSSAcceptable vapor line diameters provide adequate oil return to the compressor while avoiding excessive capacity loss. The suction linediameters shown in the chart below are acceptable for HP systems with R−410A refrigerant:

Vapor Line Sizing and Cooling Capacity Losses − R−410A Refrigerant 1− Stage Heat Pump Applications

Unit Nominal Size(Btuh)

Acceptable VaporLine Diameters

(In. OD)

Cooling Capacity Loss (%)Total Equivalent Line Length (ft)

Standard Application Long Line Application Requires Accessories

25(7.62)

50(15.2)

80(24.4)

80+(24.4+)

100(30.48)

125(38.10)

150(45.72)

175(53.34)

200(60.96)

225(68.58)

250(76.20)

180001-Stage HP

1/2 1 2 3 3 4 6 7 8 9 10 12

5/8 0 0 1 1 1 1 2 2 3 3 3

240001-Stage HP

5/8 0 1 1 1 2 3 3 4 4 5 6

3/4 0 0 0 0 0 1 1 1 1 1 2

300001-Stage HP

5/8 1 2 3 3 3 4 5 6 7 8 9

3/4 0 0 1 1 1 1 2 2 2 3 3

7/8 0 0 0 0 0 1 1 1 1 1 1

360001-Stage HP

5/8 1 2 4 4 5 6 7 9 10 11 13

3/4 0 0 1 1 1 2 2 3 3 4 4

7/8 0 0 0 0 0 1 1 1 1 2 2

420001-Stage HP

3/4 0 1 2 2 2 3 4 4 5 6 6

7/8 0 0 1 1 1 1 2 2 2 3 3

480001-Stage HP

3/4 0 1 2 2 3 4 5 5 6 7 8

7/8 0 0 1 1 1 2 2 2 3 3 4

600001-Stage R-410A HP

3/4 1 2 4 4 5 6 7 9 10 11 12

7/8 0 1 2 2 2 3 4 4 5 5 6

1 1/8 0 0 0 0 1 1 1 1 1 1 2

Standard Length = 80 ft. (24.4 m) or less total equivalent length

Applications in this area are long line. Accessories are required as shown recommended on Long Line Application GuidelinesApplications in this area may have height restrictions that limit allowable total equivalent length, when outdoor unit is below indoor unit See Long Line Application Guidelines

REFRIGERANT PIPING LENGTH LIMITATIONSMaximum Line Lengths:The maximum allowable total equivalent length for heat pumps varies depending on the vertical separation. See the tables below forallowable lengths depending on whether the outdoor unit is on the same level, above or below the outdoor unit.

Maximum Line Lengths for Heat Pump Applications

MAXIMUM ACTUAL LENGTHft (m)

MAXIMUM EQUIVALENT LENGTH�

ft (m)MAXIMUM VERTICALSEPARATION ft (m)

Units on equal level 200 (61) 250 (76.2) N/A

Outdoor unit ABOVEindoor unit

200 (61) 250 (76.2) 200 (61)

Outdoor unit BELOWindoor unit

See Table 'Maximum Total Equivalent Length: Outdoor Unit BELOW Indoor Unit'

� Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.



Maximum Total Equivalent Length� − Outdoor Unit BELOW Indoor Unit

Size

Liquid LineDiameterw/ TXV

HP with R-410A Refrigerant - Maximum Total Equivalent Length�Vertical Separation ft (m) Outdoor unit BELOW indoor unit;

0-20(0 - 6.1)

21-30(6.4 - 9.1)

31-40(9.4 - 12.2)

41-50(12.5 - 15.2)

51-60(15.5 - 18.3)

61-70(18.6 - 21.3)

71-80(21.6 - 24.4)

18000HP withR-410A

3/8 250* 250* 250* 250* 250* 250* 250*

24000HP withR-410A

3/8 250* 250* 250* 250* 250* 250* 250*

30000HP withR-410A

3/8 250* 250* 250* 250* 250* 250* 250*

36000HP withR-410A

3/8 250* 250* 250* 250* 250* 250* 250*

42000HP withR-410A

3/8 250* 250* 250* 250* 250* 250* 150

48000HP withR-410A

3/8 250* 250* 250* 250* 230 160 --

60000HP withR-410A

3/8 250* 225* 190 150 110 -- --

* Maximum actual length not to exceed 200 ft (61 m)� Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.−− = outside acceptable range

LONG LINE APPLICATIONSAn application is considered Long Line when the refrigerant level in the system requires the use of accessories to maintain acceptablerefrigerant management for systems reliability. Defining a system as long line depends on the liquid line diameter, actual length of thetubing, and vertical separation between the indoor and outdoor units.For Heat Pump systems, the chart below shows when an application is considered Long Line. Beyond these lengths, long lineaccessories are required:

HP WITH R−410A REFRIGERANT LONG LINE DESCRIPTION ft (m)Beyond these lengths, long line accessories are required

Liquid Line Size Units On Same Level Outdoor Below Indoor Outdoor Above Indoor

3/8 80 (24.4) 20 (6.1) vertical or 80 (24.4) total 80 (24.4)

Note: See Long Line Guideline for details

Model NumberIndoor Coil Model

NumberCoolingCapacity

EER SEER

High Temp

HSPF

Low Temp

ECapacity

E COPH

CapacityH COP

R4H418‡KB FEM4X18**BL 17,800 11.7 14 17,600 3.72 8.2 10,400 2.40

R4H424‡KB FEM4X24**CL 22,200 11.5 14 22,200 3.84 8.2 13,200 2.54

R4H430‡KB FEM4X30**BL 28,600 11.7 14 28,600 3.62 8.2 17,100 2.44

R4H436‡KB FEM4X36**BL 33,000 11.7 14 33,800 3.62 8.2 21,000 2.40

R4H442‡KB FEM4X42**CL 40,000 11.5 14 41,000 3.62 8.2 25,200 2.50

R4H448‡KB FEM4X48**BL 46,000 11.7 14 45,500 3.64 8.2 27,800 2.56

R4H460‡KB FXM4X60**AL 57,000 11.7 14 54,500 3.70 8.2 33,000 2.56

‡ A = Standard Grille, G = Coil Guard Grille

* AHRI = Air Conditioning, Heating & Refrigeration Institute* Ratings are net values reflecting the effects of circulating fan heat. Supplemental electric heat is not included. Ratings are based on:Cooling Standard: 80�F (27�C) db 67�F (19�C) wb indoor entering air temperature and 95�F (35�C) db air entering outdoor unit.High−Temp Heating Standard: 70�F (21�C) db indoor entering air temperature and 47�F (8�C) db 43�F (6�C) wb air entering outdoor unit.Low−Temp Heating Standard: 70�F (21�C) db indoor entering air temperature and 17�F (−8�C) db 15�F (−9�C) wb air entering outdoor unit.COP — Coefficient of PerformanceEER — Energy Efficiency RatioHSPF — Heating Seasonal Performance FactorSEER — Seasonal Energy Efficiency Ratio

TESTED AHRI COMBINATION RATINGS* Or scan this QR code:NOTE: Ratings contained in this document are subject to change at any time.

For AHRI ratings certificates, please refer to the AHRI directory. www.ahridirectory.org

Additional ratings and system combinations can be accessed via the Maratherm database: http://www.icpeqp.com/AHRIratings/ratings.aspx?Brand=Maratherm



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Accessory Description and Usage (Listed Alphabetically)1. Ball−Bearing Fan MotorA fan motor with ball bearings which permits speed reductionwhile maintaining bearing lubrication.2. Compressor Start Assist − Capacitor and RelayStart capacitor and relay gives a hard boost to compressor motorat each start up.

Usage Guideline:Required for reciprocating compressors in the followingapplications:

Long lineLow ambient coolingHard shut off expansion valve on indoor coilLiquid line solenoid on indoor coil

Required for single−phase scroll compressors in the following applications:

Long lineLow ambient cooling

Suggested for all compressors in areas with a history oflow voltage problems.

3. Compressor Start Assist — PTC TypeSolid state electrical device which gives a soft boost to thecompressor at each start−up.

Usage Guideline:Suggested in installations with marginal power supply.

4. Crankcase HeaterAn electric resistance heater which mounts to the base of thecompressor to keep the lubricant warm during off cycles.Improves compressor lubrication on restart and minimizes thechance of liquid slugging.

Usage Guideline:Required in low ambient cooling applications.Required in long line applications.Suggested in all commercial applications.

5. Evaporator Freeze ThermostatAn SPST temperature−actuated switch that stops unit operationwhen evaporator reaches freeze−up conditions.

Usage Guideline:Required when low ambient kit has been added.

6. Isolation RelayAn SPDT relay which switches the low−ambient controller out ofthe outdoor fan motor circuit when the heat pump switches toheating mode.

Usage Guideline:Required in all heat pumps where low ambient kit has been added.

7. Liquid−Line Solenoid Valve (LLS)An electrically operated shutoff valve which stops and startsrefrigerant liquid flow in response to compressor operation. It isto be installed at the outdoor unit to control refrigerant off cyclemigration in the heating mode.

Usage Guideline:An LLS is required in all long line heat pump applications to control refrigerant off cycle migration inthe heating mode. See Long Line Guideline.

8. Low−Ambient Pressure Switch KitA long life pressure switch which is mounted to outdoor unitservice valve. It is designed to cycle the outdoor fan motor inorder to maintain head pressure within normal operating limits.The control will maintain working head pressure at low−ambienttemperatures down to 0�F (−17.8�C) when properly installed.

Usage Guideline:A Low−Ambient Pressure Switch Low−Ambient Controller must be used when cooling operation is used at outdoor temperatures below 55�F (12.8�C).

9. Sound JacketWraparound sound reducing cover for the compressor. Reducesthe sound level by about 2 dBA.

Usage Guideline:Suggested when unit is installed closer than 15 ft. (4.577 m) to quiet areas, bedrooms, etc.Suggested when unit is installed between two housesless than 10 ft. (3.05 m) apart.

10. Thermostatic Expansion Valve (TXV) Bi−FlowA modulating flow−control valve which meters refrigerant liquidflow rate into the evaporator in response to the superheat of therefrigerant gas leaving the evaporator.

Usage Guideline:Accessory required to meet AHRI rating and system reliability, where indoor not equipped.Required in all heat pump applications designed with R−410A refrigerant.

11. Time−Delay RelayAn SPST delay relay which briefly continues operation of indoorblower motor to provide additional cooling after the compressorcycles off.Note: Most indoor unit controls include this feature. For thosethat do not, use the guideline below.

Usage Guideline:Accessory required to meet AHRI rating, where indoor not equipped.



ACCESSORY USAGE GUIDELINE

Accessory

REQUIRED FOR LOW−AMBIENT

COOLING APPLICATIONS(Below 55�F / 12.8�C)

REQUIRED FORLONG LINE APPLICATIONS*

REQUIRED FORSEA COAST

APPLICATIONS(Within 2 miles/3.22 km)

Accumulator Standard Standard StandardCompressor Start Assist

Capacitor and RelayYes Yes No

Crankcase Heater Yes Yes NoEvaporator Freeze Thermostat Yes No No

Hard Shutoff TXV Yes Yes NoIsolation Relay Yes No No

Liquid Line Solenoid Valve No See Long-Line Application Guideline NoLow Ambient Switch Yes No No

Support Feet Recommended No Recommended* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Residential Split−System Longline Application Guideline.

ACCESSORIES

Part Number Description Used OnModel Size

NASA001SC Start Component − PTC Device ALL

NASA00201FS Evaporator Freeze Thermostat ALL

NASA001LS Liquid Line Solenoid Valve ALL

NASA001TD Time Delay Relay, Indoor Blower ALL

NASA001AC Anti−Cycle Timer (5 minute delay) ALL

NASA401LA Low Ambient Kit (Pressure Switch) ALL

NASA00101IK Low Ambient Isolation Relay Kit ALL

NASA001SF Support Feet, 4” (102mm) tall ALL

NASA003SC Hard Start Kit (Capacitor & Relay) ALL

NASA003CH Crankcase Heater for Compressor 18, 24, 30, 36

NASA001CH Crankcase Heater for Compressor 42, 48, 60

NASA002SJ Sound Jacket, Compressor 18, 24, 30

NASA001SJ Sound Jacket, Compressor 36, 42, 48

NASA003SJ Sound Jacket, Compressor 60

EBAC05TXVX TXV Kit, R−410A − 2005−2009 R−22 TXV Fancoils (air handlers) 18, 24, 30

EBAC06TXVX TXV Kit, R−410A − 2005−2009 R−22 TXV Fancoils (air handlers) 36, 42

EBAC07TXVX TXV Kit, R−410A − 2005−2009 R−22 TXV Fancoils (air handlers) 48, 60

Copyright 2015 International Comfort ProductsLewisburg, Tennessee 37091 USA

f r a nt r4h4 e - hvacdirect.comrefrigerant tubes* (in. od) rated vapor 5/8 5/8 3/4 3/4 7/8 7/8...

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