Manuals / Carrier / Household Appliance / Heating System

Carrier 48HJ015-025 Ð Economizer Motor Control, Module Location, Ð Seal Strip Location

Models: 48HJ015-025

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5.Loosen sheet metal screws for top cover of base unit located above outdoor-air inlet opening.

6.Match notches in hood top cover with unit top cover screws. Insert hood ¯ange between top cover ¯ange and unit. Tighten screws.

7.Insert outdoor-air inlet screens and spacer in channel created by lower ®lter retainer and ®lter support bracket.

8.Attach remaining shorter section of ®lter support bracket.

Fig. 19 Ð Economizer Motor Control

Module Location

Fig. 17 Ð Economizer Damper Assembly Ð End View

Fig. 20 Ð Outdoor-Air Hood Component Location

LED Ð Light-Emitting Diode

Fig. 18 Ð Economizer Motor Control Module

Fig. 21 Ð Seal Strip Location

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Image 11

Carrier 48HJ015-025 Ð Economizer Motor Control, Module Location, Ð Economizer Damper Assembly Ð End View

Contents

INSTALLATION Step 1 Ð Provide Unit Support Installation InstructionsCONTENTS SAFETY CONSIDERATIONSDESCRIPTION ACCESSORYFig. 1 Ð Roof Curb and Horizontal Adapter Details CURBInstructions continued on page Dimension AFig. 2 Ð Horizontal Supply/Return Curb and Horizontal Adapter DetailsTable 1 Ð Physical Data Fig. 4 Ð Base Unit Dimensions, 48HJ015,017 Fig. 5 Ð Base Unit Dimensions, 48HJ025 48HJ017 and 025 Shown Fig. 6 Ð Air Distribution Ð Through-the-Bottom48HJ017 and 025 Shown Fig. 7 Ð Concentric Duct Air DistributionFig. 13 Ð Field Gas Piping Fig. 10 Ð Combustion Fan Housing LocationFig. 11 Ð Condensate Drain Details Fig. 12 Ð Condensate Drain Piping DetailsTable 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 Fig. 20 Ð Outdoor-AirHood Component Location Fig. 17 Ð Economizer Damper Assembly Ð End ViewFig. 19 Ð Economizer Motor Control Module LocationSTART-UP AIRFLOW AIRFLOW Table 4 Ð Fan Performance Data, 48HJ017 Units Table 6 Ð Air Quantity Limits Fig. 24 Ð Fan Performance Using AccessoryPower Exhaust Table 5 Ð Fan Performance Data, 48HJ025 UnitsBase Unit Operation Main Burners Removed Fig. 25 Ð Typical Gas Heating Section48HJE015, 48HJE017, and 48HJD025 Shown Fig. 26 Ð Typical Heating Section WithEvaporator Fan, 48HJ017,025 Units Fig. 28 Ð Evaporator-FanAlignment and AdjustmentFig. 29 Ð 48HJ015 Evaporator-Fan Motor Adjustment Evaporator Fan, 48HJ015 Units48HJ015,017 Fig. 32 Ð Condenser-FanAdjustment Belt Tension Adjustment Ð To adjust belt tensionCondenser-FanAdjustment Motor Section Fig. 31 Ð Condenser Fan AdjustmentFig. 33 Ð Cooling Charging Chart, 48HJ015 Table 8 Ð Economizer Checkout ProceduresTable 9 Ð High and Low Outdoor-AirTemperature Fig. 35 Ð Cooling Charging Chart, 48HJ025 Pilot AdjustmentGas Valve Adjustment Fig. 34 Ð Cooling Charging Chart, 48HJ017Protective Devices Fig. 38 Ð Typical Wiring Schematic 48HJ025 Shown Page Page LEGEND FOR FIG. 38 and Page Page PACKAGED SERVICE TRAINING Page PRESSURES START-UPCHECKLISTTEMPERATURES ELECTRICAL