Manuals / Carrier / Household Appliance / Heating System

Carrier 48HJ015-025 Ð Roof Curb and Horizontal Adapter Details, Accessory, Description, Height

Models: 48HJ015-025

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ACCESSORY	CURB	DESCRIPTION	``A''	``B''	``C''
PACKAGE NO.	HEIGHT

50PQ900221	1 -2	Standard Curb Ð	Ð	Ð	Ð
	(305)	14 High

50PQ900141	2 -0	Standard Curb
		for Units Requiring	Ð	Ð	Ð
	(610)
		High Installation

50PQ900151	2 -0	Horizontal Supply	5 -6	0 -21¤2	1 -6
	(610)	and Return Curb	(1676)	(64)	(457)

50DP900211	1 -11	Pre-Assembled,	6 -2	0 -61¤4	1 -25¤8
		High-Static,
	(584)		(1880)	(159)	(371)
		Horizontal Adapter

LEGEND

COMP SECT. Ð Compressor Section

NOTES:

1.Roof curb accessory is shipped unassembled.

2.Insulated panels, 1¤2-in. thick neoprene-coated, 2 lb density.

3. Dimensions in ( ) are in millimeters.

4. Direction of air¯ow.

NOTE: To prevent the hazard of stagnant water build-up in the drain pan of the indoor-air section, unit can only be pitched as shown.

5.Roof curb: 18 gage steel.

6.Attach all ductwork to roof curb.

7.Field installation of sidewall is mandatory.

Fig. 1 Ð Roof Curb and Horizontal Adapter Details

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Carrier 48HJ015-025 Ð Roof Curb and Horizontal Adapter Details, Accessory, Description, Package No, Height, 50DP900211

Contents

SAFETY CONSIDERATIONS Installation InstructionsCONTENTS INSTALLATION Step 1 Ð Provide Unit SupportCURB ACCESSORYFig. 1 Ð Roof Curb and Horizontal Adapter Details DESCRIPTIONand Horizontal Adapter Details Dimension AFig. 2 Ð Horizontal Supply/Return Curb Instructions continued on pageTable 1 Ð Physical Data Fig. 4 Ð Base Unit Dimensions, 48HJ015,017 Fig. 5 Ð Base Unit Dimensions, 48HJ025 Fig. 7 Ð Concentric Duct Air Distribution Fig. 6 Ð Air Distribution Ð Through-the-Bottom48HJ017 and 025 Shown 48HJ017 and 025 ShownFig. 12 Ð Condensate Drain Piping Details Fig. 10 Ð Combustion Fan Housing LocationFig. 11 Ð Condensate Drain Details Fig. 13 Ð Field Gas PipingTable 2 Ð Electrical Data Step 8 Ð Make Electrical ConnectionsFig. 14 Ð Field Power Wiring Connections Fig. 16 Ð 25% Outdoor-AirSection Details Step 9 Ð Make Outdoor-AirInlet AdjustmentsFig. 15 Ð Field Control Thermostat Wiring Module Location Fig. 17 Ð Economizer Damper Assembly Ð End ViewFig. 19 Ð Economizer Motor Control Fig. 20 Ð Outdoor-AirHood Component LocationSTART-UP AIRFLOW AIRFLOW Table 4 Ð Fan Performance Data, 48HJ017 Units Table 5 Ð Fan Performance Data, 48HJ025 Units Fig. 24 Ð Fan Performance Using AccessoryPower Exhaust Table 6 Ð Air Quantity LimitsBase Unit Operation Fig. 26 Ð Typical Heating Section With Fig. 25 Ð Typical Gas Heating Section48HJE015, 48HJE017, and 48HJD025 Shown Main Burners RemovedEvaporator Fan, 48HJ015 Units Fig. 28 Ð Evaporator-FanAlignment and AdjustmentFig. 29 Ð 48HJ015 Evaporator-Fan Motor Adjustment Evaporator Fan, 48HJ017,025 UnitsMotor Section Fig. 31 Ð Condenser Fan Adjustment Belt Tension Adjustment Ð To adjust belt tensionCondenser-FanAdjustment 48HJ015,017 Fig. 32 Ð Condenser-FanAdjustmentTable 9 Ð High and Low Outdoor-AirTemperature Table 8 Ð Economizer Checkout ProceduresFig. 33 Ð Cooling Charging Chart, 48HJ015 Fig. 34 Ð Cooling Charging Chart, 48HJ017 Pilot AdjustmentGas Valve Adjustment Fig. 35 Ð Cooling Charging Chart, 48HJ025Protective Devices Fig. 38 Ð Typical Wiring Schematic 48HJ025 Shown Page Page LEGEND FOR FIG. 38 and Page Page PACKAGED SERVICE TRAINING Page TEMPERATURES START-UPCHECKLISTELECTRICAL PRESSURES

ACCESSORY

CURB

DESCRIPTION

PACKAGE NO.

HEIGHT

50DP900211

Fig. 1 Ð Roof Curb and Horizontal Adapter Details