Allied 4SCU14LB Service Manual Download

Page: 5 / 43

508219-01

Issue 2132

Page 5 of 43

MODEL NUMBER GUIDE

Minor Revision Code

Major Revision Code

50 = Omniguard

Electrical

P = 208 - 230v/60hz/1Ph

Tonnage

18, 24, 30, 36, 42, 48, 60

Region Restrictions

1 = All Regions

Refrigerant

4 = R410A

SCU

Split Air Conditioner

SEER

Tier

LB = Louvered Basic

4 SCU 14 LB 1 24 P - 50 A

PHYSICAL AND ELECTRICAL DATA

Model

Voltage/Hz/

Phase

Voltage

Range

Min.

Circuit

Amp.

Max. Over

Current

Device

(amps)

Compressor

Outdoor Fan Motor

Rated

Load

(amps)

Locked

Rotor

(amps)

Rated

Load

(amps)

Rated

Nom.

RPM

4SCU14LB118P-50

208-230/60/1

197-253

11.9

9.0

0.7

1/10

1075

4SCU14LB124P-50

208-230/60/1

197-253

14.6

10.9

1.0

1/6

825

4SCU14LB130P-50

208-230/60/1

197-253

17.0

12.8

1.0

1/6

825

4SCU14LB136P-50

208-230/60/1

197-253

18.0

13.6

1.0

1/6

825

4SCU14LB142P-50

208-230/60/1

197-253

23.4

17.9

112

1.0

1/6

825

4SCU14LB148P-50

208-230/60/1

197-253

24.2

18.0

1.7

1/4

825

4SCU14LB160P-50

208-230/60/1

197-253

29.6

22.2

128

1.8

1/3

825

UNIT DIMENSIONS (IN.)

Model

Dimensions (inch)

Shipping

Weight

(lbs.)

A - Width

B - Depth

C - Height

4SCU14LB118P-50

24.75

26.75

29.75

155

4SCU14LB124P-50

29.38

31.25

29.75

171

4SCU14LB130P-50

29.38

31.25

37.75

187

4SCU14LB136P-50

29.38

31.25

29.75

205

4SCU14LB142P-50

29.38

31.25

37.75

234

4SCU14LB148P-50

29.38

31.25

37.75

255

4SCU14LB160P-50

35.75

37.75

43.75

284

Note:

Dimensions listed are unit sizes w/o packaging

Weights listed are units weights with packaging.

Technical Specifications - 4SCU14LB

Summary of Contents for 4SCU14LB

Page 1: ...mbol and should never be ignored When you see this symbol on labels or in manuals be alert to the potential for personal injury or death Electric shock hazard Can cause injury or death Before attempting to perform any service or maintenance turn the electrical power to unit OFF at disconnect switch es Unit may have multiple power supplies WARNING As with any mechanical equipment contact with sharp...

Page 2: ...4 2 40 18 0 94 1 7 1 4 825 4SCU16LE159P 50 208 230 60 1 197 253 28 8 45 20 8 127 2 8 1 3 V Spd 4SCU16LE160P 50 208 230 60 1 197 253 29 6 50 22 2 128 1 8 1 3 825 UNIT DIMENSIONS IN Model No Dimensions Shipping Weight lbs A width B depth C Height 4SCU16LE118P 50 24 75 26 75 29 75 155 4SCU16LE124P 50 29 38 31 25 29 75 171 4SCU16LE130P 50 29 38 31 25 37 75 187 4SCU16LE136P 50 29 38 31 25 29 75 205 4SC...

Page 3: ...nd down to 30 F Will require freeze stat CC heater and TXV Compressor Short Cycle Protector All models 47J27 Delays compressor start 5 7 minutes to prevent short cycling Hard Start 18 10J42 Scroll compressors usually do not require hard start maybe needed for utility brown out or low voltage areas Hard Start 24 thru 60 88M91 Crankcase Heater 18 24 30 36 93M04 Prevents liquid migration to compresso...

Page 4: ...8 7 8 3 8 0 083 H4TXV02 4SCU16LE159P 50 192 7 8 3 8 7 8 3 8 1 1 8 3 8 H4TXV03 4SCU16LE160P 50 192 7 8 3 8 7 8 3 8 1 1 8 3 8 0 097 H4TXV03 Factory charged for 15 feet of line set Adapter shipped with unit TXV only COOLING PERFORMANCE WITH DTC1 Outdoor Model Indoor Model Capacity BTUH EER SEER 4SCU16LE118P 50 EAC4X24B 18 000 12 20 14 00 4SCU16LE124P 50 EAC4X24B 24 000 12 20 14 25 4SCU16LE130P 50 EAC...

Page 5: ...2 1 0 1 6 825 4SCU14LB130P 50 208 230 60 1 197 253 17 0 25 12 8 63 1 0 1 6 825 4SCU14LB136P 50 208 230 60 1 197 253 18 0 30 13 6 79 1 0 1 6 825 4SCU14LB142P 50 208 230 60 1 197 253 23 4 40 17 9 112 1 0 1 6 825 4SCU14LB148P 50 208 230 60 1 197 253 24 2 40 18 0 94 1 7 1 4 825 4SCU14LB160P 50 208 230 60 1 197 253 29 6 50 22 2 128 1 8 1 3 825 UNIT DIMENSIONS IN Model Dimensions inch Shipping Weight lb...

Page 6: ...l models 31461 Mounting box for outdoor thermostat Freezestat All models 93G35 Protects the compressor at low suction pressure conditions Overflow switch All models 11U75 Turn the system off if condensate water overflows due to clogged drain pipes Blower time delay All models 58M81 Improves system efficiency and comfort Single point power supply All models 21H39 Provide single power source in one ...

Page 7: ...081 H4TXV02 4SCU14LB148P 50 156 7 8 3 8 7 8 3 8 7 8 3 8 0 083 H4TXV02 4SCU14LB160P 50 192 7 8 3 8 7 8 3 8 1 1 8 3 8 0 097 H4TXV03 Factory charged for 15 feet of line set Adapter shipped with unit COOLING PERFORMANCE WITH DTC1 Outdoor Model Indoor Model Capacity BTUH EER SEER 4SCU14LB118P 50 EAC4X24B 18 000 12 20 14 00 4SCU14LB124P 50 EAC4X24B 24 000 12 20 14 25 4SCU14LB130P 50 EAC4X30B 28 400 12 2...

Page 8: ...97 253 24 1 40 17 9 113 0 1 7 1 4 825 160 208 4SCU14LE141P 7 208 230 60 1 197 253 22 6 35 16 7 79 0 1 7 1 4 825 161 210 4SCU14LE147P 7 208 230 60 1 197 253 26 7 45 19 9 109 0 1 8 1 3 825 179 251 4SCU14LE148P 7 208 230 60 1 197 253 26 6 45 19 8 109 0 1 7 1 4 825 174 220 4SCU14LE159P 7 208 230 60 1 197 253 34 1 50 25 0 134 2 8 1 3 825 178 235 4SCU14LE160P 7 208 230 60 1 197 253 34 8 60 26 4 134 1 8 ...

Page 9: ... installed 42 47 48 59 60 14W01 factory installed TXV Kit 18 24 30 A4TXV01 36 42 48 60 A4TXV02 UNIT DIMENSIONS IN Model No Dimensions Sound Rating dBA A Width B Depth C Height 4SCU14LE 18P 7 24 75 26 75 29 75 71 4SCU14LE 24P 7 29 38 31 25 29 75 76 4SCU14LE 30P 7 29 38 31 25 37 75 74 4SCU14LE 36P 7 29 38 31 25 37 75 74 4SCU14LE 42P 7 29 38 31 25 33 75 76 4SCU14LE141P 7 29 38 31 25 37 75 76 4SCU14LE...

Page 10: ...e oz Shipping Weight lbs Rated Load amps Locked Rotor amps Rated Load amps Rated HP Nom RPM 4SCU14LB 18P 7 208 230 60 1 197 253 12 4 20 9 4 56 6 0 7 1 10 1075 77 150 4SCU14LB 24P 7 208 230 60 1 197 253 15 0 25 11 2 60 8 1 0 1 6 825 86 160 4SCU14LB 30P 7 208 230 60 1 197 253 17 0 25 12 8 67 8 1 0 1 6 825 100 180 4SCU14LB 36P 7 208 230 60 1 197 253 18 6 30 14 1 83 0 1 0 1 6 825 102 185 4SCU14LB 42P ...

Page 11: ...Sound Blanket 18 24 30 36 14W00 factory installed 42 48 60 14W01 factory installed TXV Kit H4TXV01 18 24 30 1 851363 TXV Kit H4TXV02 36 42 48 60 1 851364 UNIT DIMENSIONS IN Model No Dimensions Sound Rating dBA A Width B Depth C Height 4SCU14LB 18P 7 24 75 26 75 29 75 76 4SCU14LB 24P 7 29 38 31 25 29 75 76 4SCU14LB 30P 7 29 38 31 25 37 75 76 4SCU14LB 36P 7 29 38 31 25 37 75 76 4SCU14LB 42P 7 29 38 ...

Page 12: ... 0 7 1 10 1075 91 138 4SCU14LE124P 4 208 230 60 1 197 253 18 7 30 13 4 58 1 1 1 6 825 92 146 4SCU14LE130P 4 208 230 60 1 197 253 17 2 30 12 9 64 1 1 1 6 825 107 172 4SCU14LE136P 4 208 230 60 1 197 253 18 7 30 14 1 77 1 1 1 6 825 107 177 4SCU14LE141P 4 208 230 60 1 197 253 22 8 35 16 7 79 1 7 1 4 825 161 210 4SCU14LE142P 4 208 230 60 1 197 253 24 1 40 17 9 112 1 7 1 4 825 138 208 4SCU14LE147P 4 208...

Page 13: ... 35 75 37 75 33 75 80 4SCU14LE148P 4 29 38 31 25 37 75 80 4SCU14LE159P 4 35 75 37 75 43 75 78 4SCU14LE160P 4 35 75 37 75 43 75 80 Note Dimensions listed are unit sizes w o packaging ACCESSORIES Description Where Used Kit Number Crankcase Heater All 93M04 Hard Start 18 10J42 24 30 36 41 42 47 48 59 60 88M91 Compressor Low Ambient All 34M72 Short Cycle Protector All 47J27 Freezestat 3 8 tubing 93G35...

Page 14: ...0 26 4 22 21W10 4SCU14LB 50 Fan Blade Dia of Blades Pitch Part 18 18 3 27 98M18 24 22 3 26 43W37 30 22 3 26 43W37 36 22 3 26 15X85 41 22 3 26 43W37 42 22 3 26 43W37 47 26 4 22 21W10 48 22 4 32 30W24 59 26 4 22 21W10 60 26 4 22 21W10 4SCU14L 4 5 6 7 Fan Blade Dia of Blades Pitch Part 18 18 3 27 98M18 24 22 3 26 43W37 30 22 3 26 43W37 36 22 3 26 43W37 41 22 3 30 30W23 42 22 4 32 30W24 47 26 4 22 21W...

Page 15: ...UTDOOR COIL DISCHARGE LINE HIGH PRESSURE SWITCH COMPRESSOR GROUND LUG CONTACTOR CONTROL DUAL RUN CAPACITOR CONTROL WIRE LOOP CUTOUT FOR HIGH VOLTAGE CONDUIT NOTE Plumbing layout and compressor type may vary between model sizes CRANKCASE HEATER THERMOSTAT CRANKCASE HEATER THERMAL SWITCH Figure 1 Typical Parts Arranegment ...

Page 16: ...124P 4 0 057 A4TXV01 4SCU14L 124P 7 0 057 A4TXV01 4SCU14LE130P 4 0 065 A4TXV01 4SCU14LBR24P 7 0 057 A4TXV01 4SCU14LE136P 4 0 071 A4TXV01 4SCU14L 130P 7 0 065 A4TXV01 4SCU14LE141P 4 N A A4TXV02 4SCU14LBR30P 7 0 065 A4TXV01 4SCU14LE142P 4 N A A4TXV02 4SCU14L 136P 7 0 071 A4TXV01 4SCU14LE147P 4 N A A4TXV02 4SCU14LBR36P 7 0 071 A4TXV01 4SCU14LE148P 4 N A A4TXV02 4SCU14L 142P 7 N A A4TXV02 4SCU14LE159P...

Page 17: ...its 24 Against wall 6 Maximum soffit overhang is 36 NOTE At least one side should be unobstructed by a wall or other barrier Table 2 Clearances 30 around Control Box 24 6 Figure 3 NOTE See Table 2 for specific minimum clearance guidelines DO LOCATE THE UNIT With proper clearances on sides and top of unit On a solid level foundation or pad unit must be level to within 1 4 in ft per compressor manuf...

Page 18: ...perating Service Valves The liquid and vapor line service valves are used for removing refrigerant flushing leak testing evacuating checking charge and charging Each valve is equipped with a service port which has a factory installed valve stem Liquid and Suction Line Service Valves The liquid line and suction line service valves see Figure 4 and service ports are used for leak testing evacuation ...

Page 19: ...ntact with tubing Ensure that tubing insulation is pliable and completely surrounds vapor tube It is important that no tubing be cut or seals broken until you are ready to actually make connections to the evaporator and to the condenser section DO NOT remove rubber plugs or copper caps from the tube ends until ready to make connections at evaporator and condenser Under no circumstances leave the l...

Page 20: ... THEN STRAP THE LIQUID LINE TO THE VAPOR LINE FLOOR JOIST OR ROOF RAFTER REFRIGERANT LINE SET INSTALLING HORIZONTAL RUNS NOTE Similar installation practices should be used if line set is to be installed on exterior of outside wall PVC PIPE FIBERGLASS INSULATION CAULK OUTSIDE WALL VAPOR LINE WRAPPED WITH ARMAFLEX LIQUID LINE OUTSIDE WALL LIQUID LINE VAPOR LINE WOOD BLOCK BETWEEN STUDS STRAP WOOD BL...

Page 21: ...clamps from the liquid line and distributor assembly 3 Disconnect the equalizer line from the check expansion valve equalizer line fitting on the vapor line 4 Remove the vapor line sensing bulb 5 Disconnect the liquid line from the check expansion valve at the liquid line assembly 6 Disconnect the check expansion valve from the liquid line orifice housing Take care not to twist or damage distribut...

Page 22: ...gauges and equipment as shown in Figure 7 2 Set the recovery machine for liquid recovery and start the recovery machine Open the gauge set valves to allow the recovery machine to pull a vacuum on the existing system line set and indoor unit coil 3 Position the cylinder of clean R 410A for delivery of liquid refrigerant and open its valve to allow liquid refrigerant to flow into the system through ...

Page 23: ...wn Sensing bulb insulation is required if mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install one of the provided Teflon rings around the stubbed end of the check expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with refrigerant oil...

Page 24: ...ssure side to liquid line service valve service port B Connect gauge set center port to bottle of nitrogen with regulator C Remove core from valve in vapor line service port to allow nitrogen to escape NITROGEN HIGH LOW USE REGULATOR TO FLOW NITROGEN AT 1 TO 2 PSIG B A C WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE Flow regulated nitrogen at 1 to 2 psig through the l...

Page 25: ...VES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated cloths around service valve bodies and copper tube stubs Use additionalwater saturated cloths underneath the valve body to protect the base paint 4 FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set int...

Page 26: ...he valve on the high side of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and verify that the refrigerant added to the system earlier is measurable with a leak detector F After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks Use the fo...

Page 27: ...uid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following Close manifold gauge valves Shut off HFC 410A cylinder Reinstall service valve cores by removing manifold hose from service valve Quickly install cores with core tool while maintaining a positive system pressure Replace stem caps and finger tighten them t...

Page 28: ...cess high voltage field wiring should be trimmed or secured away from the low voltage field wiring 2 High voltage power connections to 3 phase models is made to Pig Tail leads with field supplied splice connectors 3 Ground unit at unit disconnect switch or to an earth ground To facilitate conduit a hole is in the bottom of the control box Connect conduit to the control box using a proper conduit f...

Page 29: ...508219 01 Issue 2132 Page 29 of 43 HIGH PRESSURE SWITCH S4 LIQUID LINE CRANKCASE THERMOSTAT S40 CRANKCASE HEATER HR1 Figure 9 Typical Factory Wiring Diagram Copeland Compressor ...

Page 30: ...508219 01 Issue 2132 Page 30 of 43 CRANKCASE HEATER HR1 HIGH PRESSURE SWITCH S4 LIQUID LINE Figure 10 Typical Factory Wiring Diagram Copeland Compressor 59 model only ...

Page 31: ...01 Issue 2132 Page 31 of 43 CRANKCASE HEATER HR1 HIGH PRESSURE SWITCH S4 LIQUID LINE CRANKCASE THERMOSTAT S40 THERMAL PROTECTION SWITCH S5 OR S173 Figure 11 Typical Factory Wiring Diagram Interlink Compressor ...

Page 32: ... the indoor evaporator and outdoor temperatures above 65 F charge using the superheat method and table provided on the unit access panel For systems using a TXV on the indoor evaporator and outdoor temperature above 60 F charge in Sequence of Operation NOTE The thermostat used may be electromechanical or electronic NOTE Transformer in indoor unit supplies power 24 VAC to the thermostat and outdoor...

Page 33: ...rushed from the condenser coils Use a soft bristle brush with light pressure only DO NOT damage or bend condenser coil fins Damaged or bent fins may affect unit operation Figure 12 Removing Louvers Remove two screws at top panel to remove louvers for coil access SHARP OBJECT HAZARD Condenser coils have sharp edges Wear adequate body protection on body extremities e g gloves FAILURE TO FOLLOW THIS ...

Page 34: ...508219 01 Issue 2132 Page 34 of 43 Wiring Diagram Figure 13 A C Single Phase Wiring Diagram ...

Page 35: ...508219 01 Issue 2132 Page 35 of 43 Figure 14 A C Single Phase Wiring Diagram 59 model only ...

Page 36: ...508219 01 Issue 2132 Page 36 of 43 Figure 15 3 Phase 208 230 Volt ...

Page 37: ...508219 01 Issue 2132 Page 37 of 43 Figure 16 3 Phase 460 Volt ...

Page 38: ...UID PHASE CONNECTIONS FOR TESTING AND CHARGING GAUGE SET A C D LOW HIGH B SUCTION LINE SERVICE PORT CONNECTION Servicing Units Void of Charge If the outdoor unit is void of refrigerant clean the system using the procedure described below 1 Leak check system using procedure outlined on Page 26 2 Evacuate the system using procedure outlined on Page 26 3 Use nitrogen to break the vacuum and install a...

Page 39: ...59 60 61 62 63 64 65 66 67 68 69 70 Temperature of air entering indoor coil ºF INDOOR COIL DRY BULB DRY BULB WET BULB B TDrop 19º A Dry bulb Wet bulb ºF A 72º B 64º C 53º air flow air flow All temperatures are expressed in ºF 1 Determine the desired DT Measure entering air temperature using dry bulb A and wet bulb B DT is the intersecting value of A and B in the table see triangle 2 Find temperatu...

Page 40: ...0 10 23 3 36 8 90 32 2 274 0 5 20 6 42 5 95 35 0 295 0 0 17 8 48 6 100 37 8 317 0 5 15 0 55 2 105 40 6 340 0 10 12 2 62 3 110 43 3 365 0 15 9 4 70 0 115 46 1 391 0 20 6 7 78 3 120 48 9 418 0 25 3 9 87 3 125 51 7 446 0 30 1 1 96 8 130 54 4 476 0 35 1 7 107 0 135 57 2 507 0 40 4 4 118 0 140 60 0 539 0 45 7 2 130 0 145 62 8 573 0 50 10 0 142 0 150 65 6 608 0 55 12 8 155 0 Table 6 HFC 410A Temperature...

Page 41: ...508219 01 Issue 2132 Page 41 of 43 Charge Labels Figure 17 4SCU16LE 4SCU14LB 50 ...

Page 42: ...508219 01 Issue 2132 Page 42 of 43 Figure 18 4SCU14LE LB 4 thru 7 ...

Page 43: ...________________________________________________ Rated LoadAmpacity ________________ Compressor _______________________ Outdoor Fan ________________________ Maximum Fuse or Circuit Breaker _______________________________________________________________________________ Electrical Connections Tight Indoor Filter Clean Supply Voltage Unit Off _______________ Indoor Blower RPM _________________ S P Dr...

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