Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AH044-084 specifications FU Ð Fuse

Models: 38AH044-084

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FU Ð Fuse

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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
	incoming wire size for each terminal block is 500 kcmil.
3.	Terminal blocks TB3 and TB4 are for external ®eld control connec-

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
TM	Air Volume Units
TM	Ð Timer Motor
TR	Ð Timer Relay

TRAN Ð Transformer

UÐ Unloader Solenoid

Factory Wiring Field Wiring

	tions. Control connections are to be Class 1 wiring.
4.	Field-supplied components (IFC, LLS-A, and LLS-B) must have a maxi-
	mum sealed coil rating of 30 va each (.25 amp at 120 vac, .13 amp at
	230 vac). AHMS IFC-AUX must have a minimum pilot duty rating of
	200 va (1.7 amps at 120 vac, 0.9 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.	Units have 175 va of power available for ®eld-installed accessories.

Fig. 24 Ð Field Wiring, Single ModuPanel™ Control, 38AH044-084 Dual-Circuit Units

Image 32

Carrier 38AH044-084 specifications FU Ð Fuse

Contents

CONTENTS SAFETY CONSIDERATIONSINSTALLATION Step 5 Ð Install AccessoriesTable 1 Ð Rigging Center of Gravity Ð in. mm Table 2A Ð Operational Corner Weights with Table 2B Ð Operational Corner Weights withStep 2 Ð Check Compressor Mounting Refrigerant Charge Approximate Ð LbFig. 1 Ð Dimensions Ð Units 38AH044,054,064 Chart 1, Field Power Supply ConnectionsFig. 2 Ð Dimensions Ð Units 38AH074,084 Chart 1, Field Power Supply ConnectionsFig. 3 Ð Dimensions Ð Unit 38AH094 UNITVOLTAGE DIAMETER Ð in. mmFig. 4 Ð Dimensions Ð Unit 38AH104 UNITVOLTAGE DIAMETER Ð in. mmFig. 5 Ð Dimensions Ð Unit 38AH124 UNITVOLTAGE DIAMETERFig. 6 Ð Dimensions Ð Unit 38AH134 UNITVOLTAGE DIAMETER Ð38AH 38AH and Sheet Metal Trim Kit and Sheet Metal Trim Unit 38AH134 ShownRIG HERE RIG HERE RIG HEREFig. 9B Ð Field-InstalledSuction Line Loop Fig. 9A Ð Typical Module with CoverPanels Removed Fig. 10 Ð Outer View, Compressor MountingStep 3 Ð Make Refrigerant Piping Connections Table 5 Ð Liquid LiftFig. 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 and 38AH094-134Units Optional Single-CircuitUnitsLEGEND TXV Ð Thermostatic Expansion Valve TYP Ð Typical NOTE Lower split rst on, last offPiping Kit Fig. 16 Ð Units 38AH124 and 134 with InstalledConnect Tubing from Evaporator to Unit Kit Rails Fig. 19 Ð Fully Assembled Piping and Trim KitUnit 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 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 Charging Chart Ð Unit 38AH044 Charging Chart Ð Unit 38AH054Fig. 35 Ð Fig. 36 ÐCharging Chart Ð Unit 38AH064 Charging Chart Ð Unit 38AH074Fig. 39 Ð Charging Chart Ð Unit 38AH084 Fig. 37 ÐFig. 40 Ð Charging Chart Ð Unit 38AH094 50/60 Hz Fig. 41 Ð Charging Chart Ð Unit 38AH104 50/60 HzFig. 42 Ð Charging Chart Ð Modules 124A, 124B Fig. 43 Ð Charging Chart Ð Module 134BSERVICE Refrigerant CircuitCompressor Motor Protection Table 17 Ð Fan Cycling Control Ð Psig kPagCapacity Control Table 18 Ð Pressure Switch Settings Psig kPagFig. 44 Ð Unloader Location and Settings Table 19A Ð One 2-StageThermostat Capacity Control for 38AH044-084 Dual-CircuitUnitsTable 20 Ð One 2-StageThermostat Capacity Control for 38AH094-134UnitsFig. 46 Ð Pressure-ActuatedCapacity Control Valve CONTROLFig. 45 Ð Accumulator and Fusible Plug Fig. 47 Ð Timer Cycle Fig. 49 Ð Condenser Fan Adjustment Fig. 48 Ð Unit Control BoxCompressor Replacement Ð Perform the following TROUBLESHOOTING TROUBLESHOOTING cont START-UPCHECKLIST A. Preliminary InformationB. Pre-Start-Up OUTDOOR UNITC. Start-Up