Page 2 - Fig. 1 — Horizontal Conversion Panels
2 Curb should be level. Unit leveling tolerances are shown in Fig. 3. This is necessary for unit drain to function properly. Re-fer to Accessory Roof Curb Installation Instructions for addi-tional information as required.SLAB MOUNT (Horizontal Units Only) — Provide a levelconcrete slab that extends ...
Page 3 - Fig. 2 — Roof Curb Dimensions
3 TO ENSURE AIRTIGHT CONNECTIONPLACE UNIT AS CLOSE TOEND AS POSSIBLE. TO ENSURE AIRTIGHT CONNECTIONPLACE UNIT AS CLOSE TOEND AS POSSIBLE. Fig. 2 — Roof Curb Dimensions ROOF CURB ACCESSORY ‘‘A’’ UNIT SIZE 48TJ CRRFCURB001A00 1 ′ -2 ″ [356] 004-007 CRRFCURB002A00 2 ′ -0 ″ [610] NOTES: 1. Roof curb acc...
Page 4 - MAXIMUM ALLOWABLE; Fig. 3 — Unit Leveling Tolerances
4 POSITIONING — Maintain clearance around and above unitto provide minimum distance from combustible materials,proper airflow, and service access. See Fig. 6. A properly posi-tioned unit will have the following clearances between unit androof curb: 1 / 4 -in. clearance between roof curb and base rai...
Page 5 - Step 7 — Make Electrical Connections; Unit weights do not include economizer. See Table 1 for econo-; Fig. 5 — Rigging Details
5 Step 7 — Make Electrical Connections DISCONNECT BOX LOCATION — The field-supplied dis-connect box may be mounted on the unit’s end panel or on thecorner post. Mount disconnect box on the left side of the ratingplate when mounting on the unit’s end panel. Do not mount thedisconnect box over the uni...
Page 6 - Table 1 — Physical Data; Scroll
6 Table 1 — Physical Data 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 or resetting ...
Page 8 - Fig. 6 — Base Unit Dimensions
8 UNIT48TJ STANDARD UNIT WEIGHT DURABLADE ECONOMIZER WEIGHT ECONOMI$ER WEIGHT CORNER WEIGHT (A) CORNER WEIGHT (B) CORNER WEIGHT (C) CORNER WEIGHT (D) Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg E/F004 460 209 34 15.4 47 21.3 140 63.5 105 47.6 159 72.1 56 25.4 D/E/F005 470 213 34 15.4 47 21.3 142 64.4 ...
Page 9 - Fig. 8 — Gas Piping Guide (With Accessory; SPACING OF SUPPORTS; Fig. 7 — Flue Hood Details; LEGEND; Fig. 10 — Component Location; Integrated Gas Unit Controller
9 Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (see Table 2).On 3-phase units, voltages between phases must be balancedwithin 2% and the current within 10%. Use the formula shownin the legend for Table 2, Note 2 to determine the percent of...
Page 10 - Fig. 11 — Power Wiring Connections; COMP —
10 LEGEND Fig. 11 — Power Wiring Connections C — Contactor COMP — Compressor NEC — National Electrical Code TB — Terminal Block Fig. 12 — Low-Voltage Connections LEGEND AHA — Adjustable Heat AnticipatorField WiringFactory Wiring 208/230-1-60 208/230-3-60 460-3-60 (SIZE 007 ONLY) 208/230-3-60 575-3-6...
Page 11 - Table 2 — Electrical Data
11 Table 2 — Electrical Data LEGEND *Used to determine minimum disconnect per NEC. †Fuse or HACR circuit breaker. NOTES: 1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrentprotective device for the unit shall be fu...
Page 14 - Fig. 21 — Durablade Economizer Installed in Unit
14 ECONOMIZERCONTROLBOARD ECONOMIZERPLUG ECONOMIZERMOTOR TOPSCREW BAROMETRICRELIEF DAMPER WIRINGHARNESS POSITION SETTINGBRACKET U-SHAPEDHOLE(NOTSHOWN) SHIPPINGSCREW UNIT TOP OAT(TERMINALS ARE UP) OUTSIDE AIRSCREEN MINIMUM POSITION OPEN 3 1 T P P1 T1 4 2 5 S S O D C TR B RE V . B 1 9 8 8 1 8 A % H U ...
Page 15 - OAT; Outdoor-Air Thermostat
15 OPTIONAL ECONOMI$ER — See Fig. 26 for EconoMi$ercomponent locations. 1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is nowdisengaged from the track and can be removed. Removethe indoor coil access panel and discard. See Fig. 27.If insta...
Page 16 - Fig. 31 — Rear EconoMi$er Flange Installation
16 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. 30) hood as-sembly to un...
Page 18 - OR; Fig. 35 — Wiring Diagram for Power Exhaust System
18 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 ...
Page 19 - Fig. 39 — Barometric Relief Capacity
19 CO 2 Control Set Up — If a CO 2 sensor is not being used, proceed to the next section. If a CO 2 sensor is being used, per- form 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...
Page 20 - Step 9 — Adjust Evaporator-Fan Speed —; Set movable flange at nearest keyway of pulley hub and; Fig. 41 — Belt Drive Motor Mounting
20 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...
Page 37 - Table 30 — Altitude Compensation*; *As the height above sea level increases, there is less oxygen per; Fig. 43 — Service Panel Location
37 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...
Page 38 - Heating; Fig. 44 — Burner Section Details
38 Heating 1. Purge gas supply line of air by opening union ahead of gas valve. If gas odor is detected, tighten union and wait5 minutes before proceeding. 2. Turn on electrical supply and open manual gas valve.3. Set system switch selector at HEAT position and fan switch at AUTO. or ON position. Se...
Page 40 - Fig. 45 — Coil Cleaning
40 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 and tag disconnect. Remove evapora- tor coil access panel. 2. If economizer is installed, remove economizer by discon- necting 12-pi...
Page 41 - Fig. 47 — Separating Coil Sections
41 Lubrication COMPRESSORS — Each compressor is charged with thecorrect amount of oil at the factory.FAN-MOTOR BEARINGS — Fan-motor bearings are ofthe permanently lubricated type. No further lubrication is re-quired. No lubrication of condenser or evaporator fan motors isrequired. Manual Outdoor-Air...
Page 43 - Table 31 — LED Error Code Description*; Main Burners —; Fig. 53 — Burner Section Details
43 Combustion-Air Blower — Clean periodically to as- sure 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...
Page 44 - LOW HEAT
44 Fig. 54 — Burner Tray Details Fig. 55 — Spark Adjustment LOW HEAT 48TJE004, 48TJD005-007 — 74,000 BTUH INPUT MEDIUM ANDHIGH HEAT 48TJE005-007, 48TJF004 — 115,000 BTUH INPUT 48TJF005-007 — 150,000 BTUH INPUT
Page 45 - TROUBLESHOOTING; Table 32 — LED Error Code Service Analysis; Table 33 — Heating Service Analysis; IGC; LED —
45 TROUBLESHOOTING Table 32 — LED Error Code Service Analysis LEGEND Table 33 — Heating Service Analysis 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 a 24-v circuit ...
Page 46 - Table 34 — Cooling Service Analysis
46 Table 34 — 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. ...
Page 47 - Table 35 — Durablade Economizer Troubleshooting
47 Table 35 — Durablade Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does notopen. 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 ispresent at PL6-1 (red wire) and/or PL...
Page 48 - Table 36 — EconoMi$er Troubleshooting; PL —; Plug
48 Table 36 — EconoMi$er Troubleshooting LEGEND PL — Plug PROBLEM POTENTIAL CAUSE REMEDY Damper Does NotOpen Indoor (Evaporator) Fan is Off Check to ensure that 24 vac is present at Ter minal C1 (Common Power)on the IFC (Indoor [Evaporator] Fan Contactor) or that 24 vac is present atthe IFO (Indoor ...
Page 49 - Fig. 56 — Typical Wiring Diagram and Component Arrangement
49 Fig. 56 — Typical Wiring Diagram and Component Arrangement
Page 52 - ELECTRICAL
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 534-774 Printed in U.S.A. Form 48TJ-18SI Pg CL-1 10-00 Replaces: 48TJ-16SI Book 1 4 Tab 1a 6a Copyright 2000 Carrier Cor poration - - ...