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Carrier 38AH044-084 Ð Dimensions Ð Units 38AH074,084, Chart 1, Field Power Supply Connections

Models: 38AH044-084

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Fig. 2 Ð Dimensions Ð Units 38AH074,084

		DUAL CKT				SINGLE CKT

SUCTION	21¤8		Dia [54 mm]		25¤8		Dia [67 mm]
CONNECTION(S)
LIQUID		7¤8	Dia [22 mm]		11¤8		Dia [29 mm]
CONNECTION(S)
SUCTION C	2	-11¤16		[627mm]	1	-105¤16[567mm]
LIQUID D	1	-101¤16		[561mm]	1	-105¤16[567mm]
SUCTION (Ckt A)	1	-713¤16[503mm]			2	-5¤8	[626mm]
SUCTION (Ckt B)	2	-5¤8		[626mm]			Ð
LIQUID (Ckt A)	2	-53¤4		[756mm]	2	-105¤8[879mm]
LIQUID (Ckt B)	2	-105¤8		[879mm]			Ð

Chart 1, Field Power Supply Connections

	UNIT	VOLTAGE	Hz	DIAMETER Ð in. [mm]		QTY
	074	208/230	60	21¤2 [63]		2
	074	460	60	21¤2 [63]		1
		460	60	21¤2 [63]		1
		346, 380/415	50	35¤8 [92]		1
	074, 084	380	60	35¤8	[92]	1
		575	60	21¤2	[63]	1
	084	208/230	60	35¤8	[92]	2
	084	460	60	35¤8	[92]	1
		460	60	35¤8	[92]	1

LEGEND

CÐ Copper Fin Coils MTG Ð Mounting

SAE Ð Society of Automotive Engineers

NOTES:

1. The approximate operating weight of the unit is:

38AH-074---	3812 lb (1729 kg)
38AH-074--C	4229 lb (1918 kg)
38AH-084---	4057 lb (1840 kg)
38AH-084--C	4735 lb (2148 kg)

2.Unit must have clearances for air¯ow as follows: Top Ð Do not restrict in any way.

Ends Ð 5 ft [1524 mm] Sides Ð 6 ft [1829 mm]

3.Mounting holes may be used to mount unit to concrete pad. They are not recommended for mounting unit to spring isolators. If spring isolators are used, a perimeter support channel between the unit and the iso- lators is recommended.

4.See Table 1 for rigging center of gravity (Dimensions X,Y). See Table 2A and 2B for A-D corner weights.

5.Circled numerals in Top View refer to condenser fans by position.

Fig. 2 Ð Dimensions Ð Units 38AH074,084

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Carrier 38AH044-084 specifications Ð Dimensions Ð Units 38AH074,084, Chart 1, Field Power Supply Connections

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 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 Optional Single-CircuitUnits and 38AH094-134UnitsLEGEND 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 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 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 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 kPagCapacity Control Table 18 Ð Pressure Switch Settings Psig kPagFig. 44 Ð Unloader Location and Settings Control for 38AH044-084 Dual-CircuitUnits Table 19A Ð One 2-StageThermostat CapacityTable 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. 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