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48TF004-007
Single-Package Rooftop
Heating/Cooling Units
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
Disconnect gas piping from unit when leak
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
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testing at pressure greater than / psig.
2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
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Pressures greater than / psig will cause
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Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
gas valve damage resulting i
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Fig. 1 — Horizontal Conversion Panels Curb should be level. Unit leveling tolerances are shown in When using the standard side drain connection, make sure Fig. 3. This is necessary for unit drain to function properly. Re- the plug (Red) in the alternate bottom connection is tight before fer to Accessory Roof Curb Installation Instructions for addi- installing the unit. tional information as required. To use the bottom drain connection for a roof curb installa- SLAB MOUNT (Horizontal Units Only)
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3 NOTES: 7. Direction of airflow. ROOF CURB 1. Roof curb accessory is shipped disassembled. A UNIT SIZE ACCESSORY 8. Connector packages CRBTMPWR001A00 and 002A00 are for thru-the- 2. Insulated panels. curb connections. Packages CRBTMPWR003A00 and 004A00 are for 1′-2″ 3. Dimensions in [ ] are in millimeters. CRRFCURB001A00 thru-the-bottom connections. [356] 4. Roof curb, galvanized steel. 48TF004-007 5. Attach ductwork to curb (flanges of duct rest on curb). 2′-0″ CRRFCURB002A00 6. Service cleara
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Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials. Adequate combustion-air space must be provided for proper operation of this equipment. Be sure that installation complies MAXIMUM ALLOWABLE DIFFERENCE (in.) with all local codes and Section 5.3, Air for Combustion and Ventilation, NFGC (National Fuel Gas Code), and ANSI A-B B-C A-C (American National Standards Institute) Z223.1, and NFPA 0.5 1.0 1.0 (National Fire Protection Associatio
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Table 1 — Physical Data — 48TF004-007 UNIT SIZE 48TF E/F/M/N004 D/E/F/L/M/N005 D/E/F/L/M/N006 D/E/F007 NOMINAL CAPACITY (tons) 3456 OPERATING WEIGHT (lb) Unit Al/Al* 460 470 490 565 Al/Cu* 465 476 497 576 Cu/Cu* 468 482 505 587 Economizer Durablade 34 34 34 34 EconoMi$er 47 47 47 47 Roof Curb† 115 115 115 115 COMPRESSOR Reciprocating Scroll Quantity 1111 No. Cylinders (per Circuit) 2222 Oil (oz) 50 50 50 54 REFRIGERANT TYPE R-22 Expansion Device Acutrol™ Metering Device Operating Charge (lb-oz)
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Table 1 — Physical Data — 48TF004-007 (cont) UNIT SIZE 48TF E/F/M/N004 D/E/F/L/M/N005 D/E/F/L/M/N006 D/E/F007 FURNACE SECTION Rollout Switch Cutout Temp (F)†† 195 195 195 195 Burner Orifice Diameter (in. ...drill size) Natural Gas Std TFD — .113...33 .113...33 .113...33 TFE .113...33 .113...33 .113...33 .113...33 TFF .113...33 .129...30 .129...30 .129...30 TFL — .102...38 .102...38 — TFM .102...38 .102...38 .102...38 — TFN .102...38 .116...32 .116...32 — Liquid Propane Alt TFD — .089...43 .089..
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7 BOTTOM POWER CHART, STD UNIT DURABLADE ECONOMI$ER (A) (B) (C) (D) “A” THESE HOLES REQ’D FOR USE WEIGHT ECONOMIZER WEIGHT WEIGHT CORNER WEIGHT CORNER WEIGHT CORNER WEIGHT CORNER WEIGHT UNIT PANEL WITH ACCESSORY PACKAGES — LENGTH Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg Lbs Kg 1 3 CRBTMPWR001A00, 3A00 ( / ″, / ″) 2 4 3 48TFN,TFM,TFF,TFE004 460 209 140 63.5 105 47.6 159 72.1 56 25.4 1′-10 / ″ [568.0] 8 3 THREADED REQ’D HOLE 48TFN,TFM,TFL,TFF,TFE,TFD005 470 213 142 64.4 106 48.1 162 73.5 60 27.2
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Step 7 — Make Electrical Connections Unit cabinet must have an uninterrupted, unbroken electri- cal ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control com- partment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA, latest edition, and local electrical codes. Do not use gas piping as an electrical ground. F
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208/230-3-60 208/230-1-60 460-3-60 (SIZE 007 ONLY) 575-3-60 208/230-3-60 (SIZE 007 ONLY) 575-3-60, 460-3-60 (SIZES 004-006) LEGEND C— Contactor COMP — Compressor NEC — National Electrical Code TB — Terminal Block Fig. 9 — Power Wiring Connections RACEWAY LOW VOLTAGE INTEGRATED GAS UNIT CONNECTIONS CONTROLLER (IGC) LEGEND AHA — Adjustable Heat Anticipator Field Wiring Factory Wiring NOTES: 1. Connect Y2 when unit is equipped with an economizer. HOLE IN END PANEL (HIDDEN) 2. Connect W2 when unit i
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Table 2 — Electrical Data VOLTAGE COMPRESSOR OFM POWER DISCONNECT COMBUSTION UNIT NOMINAL IFM IFM RANGE (ea) (ea) SUPPLY SIZE* FAN MOTOR 48TF V-Ph-Hz TYPE FLA FLA Min Max RLA LRA Qty Hp FLA MCA MOCP† FLA LRA Std 3.5 24.5/24.5 30/30 23/23 106/106 1 208/230-1-60 187 254 16.2 96.0 1 / 1.4 .6 4 Alt 4.9 26.6/26.6 35/35 26/26 111/111 Std 3.5 17.7/17.7 25/25 17/17 85/85 1 208/230-3-60 Alt 187 254 10.2 75.0 1 / 1.4 4.9 .6 19.1/19.1 25/25 19/19 90/90 4 High 5.2 19.4/19.4 25/25 19/19 109/109 004 Std 1.3 7
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5. Place hood on front of outdoor air opening panel. See Step 8 — Make Outdoor-Air Adjustments and Fig. 13 for hood details. Secure top of hood with the Install Outdoor-Air Hood 4 screws removed in Step 3. See Fig. 14. MANUAL OUTDOOR-AIR DAMPER — The outdoor-air 6. Remove and save 6 screws (3 on each side) from sides of hood and screen are attached to the basepan at the bottom of the manual outdoor-air damper. the unit for shipping. 7. Align screw holes on hood with screw holes on side of Assemb
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OPTIONAL DURABLADE ECONOMIZER — The op- tional economizer hood assembly is packaged and shipped in the filter section. Damper blades and control boards are in- stalled at the factory and the economizer is shipped in the verti- cal discharge position. NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical discharge application, discard this plate. Assembly: 1. Determine if ventilation air is required in building. If so, determine minimu
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3 75 80 198818A TR1 1 ENTHALPY CONTROL 2 85 60 65 70 50 CONTACTS SHOWN IN HIGH ENTHALPY OR UNPOWERED STATE CONTACT RATINGS: 1.5A RUN, 3.5A IN RUSH AT 24VAC 3 mA MIN. AT 11 VDC CW–SETPOINTS–CCW DAMPER CLOSED DAMPER OPEN OUTDOOR TEMP. °F TR 24VAC 55 REV. B TR B C S O D S 5 1 2 3 MINIMUM 4 POSITION T T1 OPEN P P1 D C B A % H 90 U 70 M I D 60 I 30 T Y 10 BLOCK-OFF PLATE Fig. 19 — Horizontal Discharge Block-Off Plate U-SHAPED ECONOMIZER CONTROL ECONOMIZER ECONOMIZER TOP HOLE (NOT BOARD PLUG MOTOR S
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ECONOMI$ER CONTROLLER PLUG GEAR-DRIVEN DAMPER LEGEND OAT — Outdoor-Air Thermostat OUTDOOR AIR TEMPERATURE NOTE: See unit wiring diagram for details. SENSOR Fig. 23 — Wiring Connections for Outdoor-Air Thermostat ACTUATOR 0.90 BAROMETRIC RELIEF DAMPERS 0.80 Fig. 25 — EconoMi$er Component Locations 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 100 200 300 400 500 600 700 800 CFM Fig. 24 — Durablade Economizer Barometric Relief Damper Characteristics OPTIONAL ECONOMI$ER — See Fig. 25 for EconoMi$er compo
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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 screws provided. Repeat the process for the barometric exhaust air screen. Do not attach completed (Fig. 29) hood as- sembly to unit at this time. 6. Slide the EconoMi$er assembly into the rooftop unit. See Fig. 30 and 31. NOTE: Be sure to engage rear EconoMi$er flange under tabs in return-air opening of the unit base. See Fig
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LEGEND OAT — Outdoor-Air Temperature RAT — Return-Air Temperature Fig. 32 — EconoMi$er Wiring ECONOMI$ER BROWN TEMP CONTROLLER VIOLET TEMP OUTDOOR OAT AIR COM WHITE SENSOR COM OUT RED PWR OAH -15 V BROWN TEMP RAT VIOLET RETURN TEMP COM AIR WHITE COM SENSOR RAH OUT RED +15 V PWR CO SENSOR 2 (+) V+ 24 CO 2 CO COM 2 COM VAC DAT COM SUPPLY AIR TEMPERATURE SENSOR REM POT PINK COM TEMP LED VIOLET TEMP COM Fig. 33 — EconoMi$er Sensor Wiring 16
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TO FUSED DISCONNECT RED GRAY RED YEL BLU GRAY H1 H2 H1 H3 H2 H4 X4 X2 X3 X1 X4 X2 X3 X1 FIELD SUPPLIED WIRING SECONDARY SECONDARY 230VAC 230VAC BLACK BLACK COMPRESSOR 1 OR CONTACTOR LT. BLUE 11 21 3 B 6 9 230VAC BLACK BROWN 13 23 FAN 1 R1 2 3-PIN 5 8 24 VAC C1 CONNECTOR PLUG GREEN/ YELLOW 4 A 1 7 4-PIN CONNECTOR 2 x 4 IN. BLUE ORANGE 1 PLUG HANDY BOX YELLOW L1 2 BLACK L1 1 1 L2 BLUE L2 BROWN 22 3 GND GREEN GND 33 BLACK BLACK 44 BLUE 230 VAC LT. BLUE GREEN 1 PHASE B 3 6 9 BLACK R2 BROWN F
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Ventilation Air (Minimum Position Set Up) — If ventilation air is not required, proceed to Step 5. If ventilation air is re- quired, perform the following: 1. The indoor fan must be on to set the ventilation air. Either put the thermostat in the continuous fan mode or SUPPLY AIR jumper the R and G terminals at the rooftop unit con- TEMPERATURE nection board. SENSOR MOUNTING 2. Locate the minimum position (MIN POS) potentiome- LOCATION ter. Turn the potentiometer full CCW to fully close the outdo
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To align fan and motor pulleys: Step 9 — Adjust Evaporator-Fan Speed — Ad- just evaporator-fan rpm to meet jobsite conditions. Table 5 1. Loosen fan pulley setscrews. shows fan rpm at motor pulley settings. Table 6 shows motor 2. Slide fan pulley along fan shaft. performance. See Table 7 for Accessory/FIOP Static Pressure. Make angular alignment by loosening motor from Refer to Tables 8-29 to determine fan speed settings. mounting. DIRECT-DRIVE MOTORS — The evaporator-fan motor To adjust belt t
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Table 5 — Fan Rpm at Motor Pulley Settings* MOTOR PULLEY TURNS OPEN UNIT 48TF 1 1 1 1 1 1 0 / 11/ 22/ 33/ 44/ 55/ 6 2 2 2 2 2 2 004† 1000 976 952 928 904 880 856 832 808 784 760 — — 004** 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 005† 1185 1150 1115 1080 1045 1010 975 940 905 870 835 — — 005** 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 006† 1300 1260 1220 1180 1140 1100 1060 1020 980 940 900 — — 006** 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332
