Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AH044-084 specifications FU Ð Fuse

Models: 38AH044-084

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LEGEND

*Field-supplied.

NOTES:

1.	Factory wiring is in accordance with NEC; ®eld modi®cations or addi-
	tions must be in compliance with all applicable codes.
2.	Wiring for ®eld power supply must be rated 75 C minimum. Use cop-
	per, copper-clad aluminum, or aluminum conductors. Maximum in com-
	ing wire size for each terminal block is 500 kcmil.

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
		(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

3.	Terminal blocks TB3, TBX1, and TBX2 are for external ®eld control con-
	nections. Control connections are to be Class 1 wiring.
4.	Field-supplied components (IFC, LLS-A1, and LLS-A2) must have a
	maximum sealed coil rating of 30 va each (0.25 amp at 120 vac,
	13 amp at 230 vac). AHMS IFC-AUX must have minimum pilot duty
	rating of 400 va each (3.4 amps at 120 vac, 1.8 amps at 230 vac) each.
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 evaporator are
	required on all units.
7.	Control has 175 va of power available for ®eld-installed accessories.

Fig. 25 Ð Field Wiring, Single ModuPanel™ Control, 38AH044-084 Optional Single-Circuit Units

Image 33

Carrier 38AH044-084 specifications FU Ð Fuse

Contents

SAFETY CONSIDERATIONS CONTENTSINSTALLATION Step 5 Ð Install AccessoriesTable 1 Ð Rigging Center of Gravity Ð in. mm Table 2B Ð Operational Corner Weights with Table 2A Ð Operational Corner Weights withStep 2 Ð Check Compressor Mounting Refrigerant Charge Approximate Ð LbChart 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 38AH074,084UNIT Fig. 3 Ð Dimensions Ð Unit 38AH094VOLTAGE DIAMETER Ð in. mmUNIT Fig. 4 Ð Dimensions Ð Unit 38AH104VOLTAGE DIAMETER Ð in. mmUNIT Fig. 5 Ð Dimensions Ð Unit 38AH124VOLTAGE DIAMETERUNIT Fig. 6 Ð Dimensions Ð Unit 38AH134VOLTAGE DIAMETER Ð38AH 38AH and Sheet Metal Trim Unit 38AH134 Shown and Sheet Metal Trim KitRIG HERE RIG HERE RIG HEREFig. 9A Ð Typical Module with Cover Fig. 9B Ð Field-InstalledSuction Line LoopPanels Removed Fig. 10 Ð Outer View, Compressor MountingTable 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 Optional Single-CircuitUnits and 38AH124,134 Modular Units Dual-CircuitÐ 60 HzModular Units Dual-CircuitÐ 60 Hz Modular Units Dual Circuit Ð 50 Hz Optional Single-CircuitUnits and 38AH124,134Modular Units Dual Circuit Ð 50 Hz Optional Single-CircuitUnits and 38AH094-134UnitsLEGEND TXV Ð Thermostatic Expansion Valve TYP Ð Typical NOTE Lower split rst on, last offFig. 16 Ð Units 38AH124 and 134 with Installed Connect Tubing from Evaporator to UnitPiping Kit Fig. 19 Ð Fully Assembled Piping and Trim Kit Kit RailsUnit 38AH134 Shown Cover 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 Step 5 Ð Install Accessories PRE-START-UPSystem Check START-UP Preliminary ChecksFig. 29 Ð 06E Compressors, Typical 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 Charging Chart Ð Unit 38AH054 Charging Chart Ð Unit 38AH044Fig. 35 Ð Fig. 36 ÐCharging Chart Ð Unit 38AH074 Charging Chart Ð Unit 38AH064Fig. 39 Ð Charging Chart Ð Unit 38AH084 Fig. 37 ÐFig. 41 Ð Charging Chart Ð Unit 38AH104 50/60 Hz Fig. 40 Ð Charging Chart Ð Unit 38AH094 50/60 HzFig. 42 Ð Charging Chart Ð Modules 124A, 124B Fig. 43 Ð Charging Chart Ð Module 134BRefrigerant Circuit SERVICECompressor Motor Protection Table 17 Ð Fan Cycling Control Ð Psig kPagTable 18 Ð Pressure Switch Settings Psig kPag Fig. 44 Ð Unloader Location and SettingsCapacity Control Control for 38AH044-084 Dual-CircuitUnits Table 19A Ð One 2-StageThermostat CapacityTable 20 Ð One 2-StageThermostat Capacity Control for 38AH094-134UnitsCONTROL Fig. 45 Ð Accumulator and Fusible PlugFig. 46 Ð Pressure-ActuatedCapacity Control Valve 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 A. Preliminary Information START-UPCHECKLISTB. Pre-Start-Up OUTDOOR UNITC. Start-Up