Carrier 48HJD005-007 - Manuals

6 Table 1 — Physical Data (cont) LEGEND *Single phase/three phase. †Indicates automatic reset. **48HJD005-007 and 48HJE004 (72,000 Btuh heat input) units have 2 burners. 48HJE005-007 and 48HJF004 (115,000 Btuh heat input) units and 48HJF005-007 (150,000 Btuh Heat input) units have 3 burners. ††An LP...

8 Install conduit through side panel openings indicated in Fig. 5. Route power lines through connector to terminal con-nections as shown in Fig. 8. Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also seeTables 2A-2D). On 3-phase units, volt...

9 RACEWAY LOW VOLTAGECONNECTIONS INTEGRATED GAS UNITCONTROLLER (IGC) HOLE IN END PANEL (HIDDEN) Fig. 8 — Power Wiring Connections LEGEND C — Contactor COMPS — Compressors EQUIP — Equipment GND — Ground IFC — Indoor (Evaporator) Fan Contactor NEC — National Electrical Code TB — Terminal Block Fig. 9 ...

12 OPTIONAL DURABLADE ECONOMIZER — The option-al economizer hood assembly is packaged and shipped in thefilter section. Damper blades and control boards are installed atthe factory and the economizer is shipped in the vertical dis-charge position.NOTE: Horizontal discharge block-off plate is shipped...

13 9. Replace outdoor-air opening panel using screws from Step 2. Replace filter access panel. Ensure the filter ac-cess panel slides along the tracks and is securely engaged. 10. Fasten hood top and side plate assembly (Fig. 14) to outdoor-air opening panel with screws provided. 11. Place knob supp...

15 OPTIONAL ECONOMI$ER — See Fig. 23 for EconoMi$ercomponent locations. 1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is nowdisengaged from the track and can be removed. Removethe indoor coil access panel and discard. See Fig. 24.If insta...

16 SEAL STRIP SEAL STRIP OUTDOOR AIRHOOD TOP SCREENRETAINER OUTDOOR AIRINLETSCREENS OUTDOOR AIRHOOD SIDES ASSEMBLEDEXHAUST HOOD OUTDOOR AIROPENINGPANEL ECONOMIZER ECONOMIZER REARFLANGE UNIT BASE UNIT FILTERRACK ECONOMIZER CLIPHVAC UNIT WIRINGHARNESS OUTDOORAIRBLOCK-OFFPLATE Fig. 26 — Outdoor-Air Hoo...

17 OUTDOORAIRSENSOR TEMP TEMP COM OUTPWR BROWN VIOLET WHITE RED BROWN TEMPTEMPCOMOUTPWR RETURNAIRSENSOR VIOLET WHITE RED OAT COM OAH -15 V RAT COM RAH +15 V ECONOMI$ERCONTROLLER PINK TEMP TEMP VIOLET SUPPLY AIR TEMPERATURE SENSOR V+ 24 COM VAC SENSOR CO 2 (+) COM DAT COM REM POT COM LED COM CO 2 CO ...

18 CO 2 Control Setup — If a CO 2 sensor is not being used, pro- ceed to the next section. If a CO 2 sensor is being used, perform the following: 1. Determine the value at which you want the minimum po- sition of the dampers to begin opening to allow a greateramount of outdoor air to enter. The rang...

19 Step 9 — Adjust Evaporator-Fan Speed — Ad- just evaporator-fan speed to meet jobsite conditions. Tables 5A and 5B show fan rpm at motor pulley settings. Tables 6 and 7 show maximum amp draw of belt-drive motor.Table 8 shows motor nominal horsepower for evaporator-fanmotors. Refer to Tables 8-25 f...

30 NOTE: When the compressor is rotating in the wrong direc-tion, the unit will make an elevated level of noise and will notprovide cooling. Cooling — Set space thermostat to OFF position. To start unit, turn on main power supply. Set system selector switch atCOOL position and fan switch at AUTO. po...

33 SERVICE Cleaning — Inspect unit interior at the beginning of heat- ing and cooling season and as operating conditions require.EVAPORATOR COIL 1. Turn unit power off, tag disconnect. Remove evaporator coil access panel. 2. If economizer or two-position damper is installed, re- move economizer by d...

37 Burner Ignition — Unit is equipped with a direct spark ignition 100% lockout system. Integrated Gas Unit Controller(IGC) is located in the control box (Fig. 10). A single LED onthe IGC provides a visual display of operational or sequentialproblems when the power supply is uninterrupted. The LEDca...

38 Fig. 54 — Spark Gap Adjustment LOW HEAT 48HJE004, 48HJD005-007 — 72,000 BTUH INPUT MEDIUM AND HIGH HEAT 48HJE005-007, 48HJF004 — 115,000 BTUH INPUT 48HJF005-007 — 150,000 BTUH INPUT

39 TROUBLESHOOTING Refer to Tables 30-36 for troubleshooting details. Table 30 — LED Error Code Service Analysis LEGEND SYMPTOM CAUSE REMEDY Hardware failure.(LED OFF) Loss of power to control module (IGC). Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and transformer. Units without ...

42 Table 35 — MoistureMiser Dehumidification Subcooler Service Analysis PROBLEM CAUSE REMEDY Subcooler will not energize. No power to control transformer fromevaporator-fan motor. Check power source and evaporator-fan relay. Ensure all wire connections are tight. No power from control transformer to...

43 Table 36 — Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and condenser fanwill not start. Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or control relay. Replace component. ...

45 LEGEND AND NOTES FOR FIG. 55 AHA — Adjustable Heat Anticipator C — Contactor, Compressor CAP — Capacitor CC — Cooling Compensator CLO — Compressor Lockout COMP — Compressor Motor D — Diode EC — Enthalpy Control ECON — Economizer EPS — Emergency Power Supply EQUIP — Equipment ER — Economizer Relay...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 534-767 Printed in U.S.A. Form 48HJ-18SI Pg CL-1 9-00 Replaces: 48HJ-17SI Book 1 4 Tab 1a 6a Copyright 2000 Carrier Cor poration - - -...