Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AH044-084 specifications Field-supplied NOTES

Models: 38AH044-084

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*Field-supplied.

NOTES:

1.	Factory wiring is in accordance with NEC. Field modi®cations or
	additions must be in compliance with all applicable codes.
2.	Wiring for ®eld power supply must be rated 75 C minimum. Use
	copper, copper-clad aluminum, or aluminum conductors. Maxi-

LEGEND

	mum incoming wire size for each terminal block is 500 kcmil.
3.	Terminal blocks TB3, TB4, TBX1, and TBX2 are for external ®eld
	control connections. Control connections are to be Class 1 wiring.
4.	Field-supplied components (IFC, LLS-A1, A2, B1, and B2) must
	have a maximum sealed coil rating of 30 va each (0.25 amp at
	120 vac, 0.13 amp at 230 vac). AHMS IFC-AUX contact must have
	minimum pilot duty rating of 375 va each (3.1 amps at 120 vac,
	1.6 amps at 230 vac).
5.	Replacement of factory wires must be with type 105 C wire or its
	equivalent.
6.	Field-supplied liquid line solenoid valves installed at the evapora-
	tor are required on all units.
7.	Control has 35 va of power available for ®eld-installed accessories.

AHMS Ð Air Handler Motor Starter

AUX Ð Auxiliary

CÐ Compressor Contactor

FU Ð Fuse

GND	Ð Equipment Ground
IFC	Ð	Indoor Fan Control
kcmil	Ð	Thousand Circular Mils
LLS	Ð	Liquid Line Solenoid
NEC	Ð National Electrical Code
SDR		(U.S.A. Standard)
SDR	Ð Solenoid Drop Relay

TB	Ð Terminal Block
TBX	Ð Terminal Block for
	Variable Air Volume
TM	Units
TM	Ð Timer Motor
TR	Ð Timer Relay

TRAN Ð Transformer

UÐ Unloader Solenoid

Factory Wiring

Field Wiring

Fig. 27 Ð Field Wiring, Single ModuPanel™ Control, Unit 38AH104

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Image 35

Carrier 38AH044-084 specifications Field-supplied NOTES

Contents

Step 5 Ð Install Accessories CONTENTSSAFETY CONSIDERATIONS INSTALLATIONTable 1 Ð Rigging Center of Gravity Ð in. mm Refrigerant Charge Approximate Ð Lb Table 2A Ð Operational Corner Weights withTable 2B Ð Operational Corner Weights with Step 2 Ð Check Compressor MountingChart 1, Field Power Supply Connections Fig. 1 Ð Dimensions Ð Units 38AH044,054,064Chart 1, Field Power Supply Connections Fig. 2 Ð Dimensions Ð Units 38AH074,084DIAMETER Ð in. mm Fig. 3 Ð Dimensions Ð Unit 38AH094UNIT VOLTAGEDIAMETER Ð in. mm Fig. 4 Ð Dimensions Ð Unit 38AH104UNIT VOLTAGEDIAMETER Fig. 5 Ð Dimensions Ð Unit 38AH124UNIT VOLTAGEDIAMETER Ð Fig. 6 Ð Dimensions Ð Unit 38AH134UNIT VOLTAGE38AH 38AH RIG HERE RIG HERE and Sheet Metal Trim Kitand Sheet Metal Trim Unit 38AH134 Shown RIG HEREFig. 10 Ð Outer View, Compressor Mounting Fig. 9B Ð Field-InstalledSuction Line LoopFig. 9A Ð Typical Module with Cover Panels RemovedTable 5 Ð Liquid Lift Step 3 Ð Make Refrigerant Piping ConnectionsFig. 13 Ð Double Suction Riser Construction 38AH054-104 Dual-CircuitUnits Ð 60 Hz 38AH054-104 Dual-CircuitUnits Ð 50 Hz Modular Units Dual-CircuitÐ 60 Hz Optional Single-CircuitUnits and 38AH124,134Modular Units Dual-CircuitÐ 60 Hz Modular Units Dual Circuit Ð 50 Hz Modular Units Dual Circuit Ð 50 HzOptional Single-CircuitUnits and 38AH124,134 TYP Ð Typical NOTE Lower split rst on, last off and 38AH094-134UnitsOptional Single-CircuitUnits LEGEND TXV Ð Thermostatic Expansion ValvePiping Kit Fig. 16 Ð Units 38AH124 and 134 with InstalledConnect Tubing from Evaporator to Unit Cover Unit 38AH134 Shown Kit RailsFig. 19 Ð Fully Assembled Piping and Trim Kit Unit 38AH134 ShownStep 4 Ð Make Electrical Connections OPTIONAL SINGLE-CIRCUITUNIT UNIT UNIT Table 14 Ð Fan Motor Electrical Data Page Field-supplied 38AH LENGTH Ð FU Ð Fuse FU Ð Fuse Field-supplied NOTES Field-supplied NOTES Field-supplied NOTES System Check Step 5 Ð Install AccessoriesPRE-START-UP Fig. 29 Ð 06E Compressors, Typical START-UPPreliminary Checks Adjust Refrigerant Charge If the initial check shows too much oil too high in the sight glass remove oil to proper level. See Preliminary Oil Charge for proper procedure for adding and removing oil Fig. 30 Ð Charging Chart Ð Unit 38AH044 50/60 Hz Ð Dual Circuit Fig. 32 Ð Charging Chart Ð Unit 38AH064 50/60 Hz Ð Dual Circuit Fig. 36 Ð Charging Chart Ð Unit 38AH044Charging Chart Ð Unit 38AH054 Fig. 35 ÐFig. 37 Ð Charging Chart Ð Unit 38AH064Charging Chart Ð Unit 38AH074 Fig. 39 Ð Charging Chart Ð Unit 38AH084Fig. 43 Ð Charging Chart Ð Module 134B Fig. 40 Ð Charging Chart Ð Unit 38AH094 50/60 HzFig. 41 Ð Charging Chart Ð Unit 38AH104 50/60 Hz Fig. 42 Ð Charging Chart Ð Modules 124A, 124BTable 17 Ð Fan Cycling Control Ð Psig kPag SERVICERefrigerant Circuit Compressor Motor ProtectionCapacity Control Table 18 Ð Pressure Switch Settings Psig kPagFig. 44 Ð Unloader Location and Settings Control for 38AH094-134Units Table 19A Ð One 2-StageThermostat CapacityControl for 38AH044-084 Dual-CircuitUnits Table 20 Ð One 2-StageThermostat CapacityFig. 46 Ð Pressure-ActuatedCapacity Control Valve CONTROLFig. 45 Ð Accumulator and Fusible Plug Fig. 47 Ð Timer Cycle Fig. 48 Ð Unit Control Box Fig. 49 Ð Condenser Fan AdjustmentCompressor Replacement Ð Perform the following TROUBLESHOOTING TROUBLESHOOTING cont OUTDOOR UNIT START-UPCHECKLISTA. Preliminary Information B. Pre-Start-UpC. Start-Up