Carrier 48TF004-007 - Manuals

5 Table 1 — Physical Data — 48TF004-007 LEGEND *Evaporator coil fin material/condenser coil fin material. Contact your local representative for details about coated fins. †Weight of 14-in. roof curb. **Single phase/three-phase. ††Rollout switch lockout is manually reset by interrupting power to unit...

7 Fig. 6 — Base Unit Dimensions UNIT STD UNIT WEIGHT DURABLADE ECONOMIZER WEIGHT ECONOMI$ER WEIGHT (A) CORNER WEIGHT (B) CORNER WEIGHT (C) CORNER WEIGHT (D) CORNER WEIGHT “A” PANEL LENGTH Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg 48TFN,TFM,TFF,TFE004 460 209 34 15.4 47 21.3 140 63.5 105 47.6 ...

8 Step 7 — Make Electrical Connections FIELD POWER SUPPLY — All units except 208/230-vunits are factory wired for the voltage shown on the nameplate.If the 208/230-v unit is to be connected to a 208-v power sup-ply, the transformer must be rewired by moving the black wirewith the 1 / 4 -in. female s...

9 RACEWAY LOW VOLTAGECONNECTIONS INTEGRATED GAS UNITCONTROLLER (IGC) HOLE IN END PANEL (HIDDEN) LEGEND Fig. 9 — Power Wiring Connections C — Contactor COMP — CompressorNEC — National Electrical Code TB — Terminal Block LEGEND NOTES:1. Connect Y2 when unit is equipped with an economizer.2. Connect W2...

10 Table 2 — Electrical Data LEGEND *Used to determine minimum disconnect per NEC. †Fuse or HACR circuit breaker. NOTES: 1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrentprotective device for the unit shall be fu...

13 BLOCK-OFF PLATE ECONOMIZERCONTROLBOARD ECONOMIZERPLUG ECONOMIZERMOTOR TOPSCREW BAROMETRICRELIEF DAMPER WIRINGHARNESS POSITION SETTINGBRACKET U-SHAPEDHOLE(NOTSHOWN) SHIPPINGSCREW Fig. 19 — Horizontal Discharge Block-Off Plate Fig. 20 — Durablade Economizer Installed in Unit EXAMPLE:Given — Negativ...

14 OPTIONAL ECONOMI$ER — See Fig. 25 for EconoMi$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. 26.If insta...

15 5. Slide the outdoor-air inlet screens into the screen track on the hood side panels. While holding the screens in place,fasten the screen retainer to the hood using the screwsprovided. Repeat the process for the barometric exhaustair screen. Do not attach completed (Fig. 29) hood as-sembly to un...

16 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 ...

17 4-PIN CONNECTOR PLUG L1 L2 GREEN 1 12 2 3 3 4 4 GND 230 VAC 1 PHASE GREEN/YELLOW 3 2 1 5 8 6 9 B A 7 4 LT. BLUE BLACK BROWN C1 BLUE GREEN/YELLOW 3 2 1 5 8 6 9 B A 7 4 LT. BLUE BLACK BROWN C1 BLUE FAN 2 FAN 1 BLACK BLACK BLACK R1 24 VAC R2 24 VAC BLACK BLUE 1 2 3 BROWN ORANGE 3-PIN CONNECTOR PLUG ...

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 position of the dampers to begin opening to allow agreater amount of outdoor air to enter. The range ...

19 Step 9 — Adjust Evaporator-Fan Speed — Ad- just evaporator-fan rpm to meet jobsite conditions. Table 5shows fan rpm at motor pulley settings. Table 6 shows motorperformance. See Table 7 for Accessory/FIOP Static Pressure.Refer to Tables 8-29 to determine fan speed settings.DIRECT-DRIVE MOTORS — T...

36 START-UP Unit Preparation — Make sure that unit has been in- stalled in accordance with these installation instructions andapplicable codes. Return-Air Filters — Make sure correct filters are in- stalled in filter tracks. See Table 1. Do not operate unit withoutreturn-air filters. Compressor Moun...

38 HEATING, UNITS WITH ECONOMIZER — When thethermostat calls for heating, terminal W1 is energized. To pre-vent thermostat short-cycling, the unit is locked into the Heat-ing mode for at least 1 minute when W1 is energized. Theinduced-draft motor is energized and the burner ignition se-quence begins...

39 Lubrication COMPRESSORS — Each compressor is charged with thecorrect amount of oil at the factory.FAN MOTOR BEARINGS — Fan motor bearings are of thepermanently lubricated type. No further lubrication is required.No lubrication of condenser or evaporator fan motors isrequired. Manual Outdoor-Air D...

40 4 TON UNIT CHARGING CHART 30 40 50 60 70 80 90 100 20 30 40 50 60 70 80 SUCTION LINE TEMPERATURE (DEG. F) 207 276 345 414 483 552 621 689 -7 -1 4 10 16 21 27 SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP F C 125 52 115 46 105 41 95 35 85 29 75 24 65 18 55 13 45 7 SUCTION LINE PRESSURE (KILOP ASC...

41 5 TON UNIT CHARGING CHART 30 40 50 60 70 80 90 100 20 30 40 50 60 70 80 SUCTION LINE TEMPERATURE (DEG. F) 207 276 345 414 483 552 621 689 -7 -1 4 10 16 21 27 SUCTION LINE TEMPERATURE (DEG. C) OUTDOOR TEMP F C125 52 115 46 105 41 95 35 85 29 75 24 65 18 55 1345 7 SUCTION LINE PRESSURE (PSIG) SUCTI...

42 Combustion-Air Blower — Clean periodically to assure proper airflow and heating efficiency. Inspect blowerwheel every fall and periodically during heating season. For thefirst heating season, inspect blower wheel bimonthly to deter-mine proper cleaning frequency. To access burner section, slide t...

43 Fig. 51 — Burner Tray Details Fig. 52 — Spark Adjustment LOW HEAT 48TFE004, 48TFD005-007 — 74,000 BTUH INPUT48TFM004, 48TFL005-006 — 60,000 BTUH INPUT MEDIUM AND HIGH HEAT 48TFE005-007, 48TFF004 — 115,000 BTUH INPUT 48TFF005-007 — 150,000 BTUH INPUT 48TFN004, 48TFM005-006 — 90,000 BTUH INPUT 48TF...

44 TROUBLESHOOTING Table 32 — LED Error Code Service Analysis LEGEND Table 33 — Heating Service Analysis PROBLEM 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 a 24-v circuit ...

45 Table 34 — Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and condenser fan will 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....

46 Table 35 — Durablade Economizer Troubleshooting LEGEND PROBLEM CAUSE REMEDY Damper does not open. Indoor (evaporator) fan is off. 1. Check to ensure that 24 vac is present at terminal C1 on the IFC or that 24 vac is present at the IFO terminal. Check whether 24 vac is present at PL6-1 (red wire) ...

47 Table 36 — EconoMi$er Troubleshooting LEGEND OAT — Outdoor-Air Temperature PROBLEM CAUSE REMEDY Damper does not open. Indoor (evaporator) fan is Off. Check to ensure that 24 vac is present at terminal C1 (Common Power) on the IFC (Indoor Evaporator Fan Contactor) or that 24 vac is present at the ...

48 Fig. 53 — Typical Wiring Diagram and Component Arrangement

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 534-80000 Printed in U.S.A. Form 48TF-1SI Pg CL-1 8-00 Replaces: New Book 1 4 Tab 1a 6a Copyright 2000 Carrier Corporation - - - - - -...