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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. 30) hood as- sembly to unit at this time. 6. Slide the EconoMi$er assembly into the rooftop unit. See Fig. 31 and 32. NOTE: Be sure to engage rear EconoMi$er flange under tabs in return-air opening of the unit base. See Fig.
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LEGEND OAT — Outdoor-Air Thermostat Fig. 33 — EconoMi$er Wiring ECONOMI$ER BROWN TEMP CONTROLLER VIOLET TEMP OUTDOOR AIR OAT COM SENSOR WHITE COM OUT RED PWR OAH -15 V BROWN RAT TEMP VIOLET RETURN TEMP COM AIR WHITE COM SENSOR RAH OUT RED +15 V PWR CO SENSOR 2 (+) V+ 24 CO2 CO COM 2 COM VAC DAT COM SUPPLY AIR TEMPERATURE SENSOR REM POT PINK COM TEMP LED VIOLET TEMP COM Fig. 34 — EconoMi$er Sensor Wiring 17
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TO FUSED FAN 1 FAN 2 CAPACITOR 2 DISCONNECT CAPACITOR 1 RELAY 2 RED GRAY RED YEL BLU GRAY RELAY 1 H1 H2 H1 H3 H2 H4 4-PIN 3-PIN CONNECTOR PLUG CONNECTOR PLUG (HIGH VOLTAGE) (LOW VOLTAGE) X4 X2 X1 X4 X2 X3 X1 X3 FIELD SUPPLIED WIRING SECONDARY SECONDARY 230VAC 230VAC BLACK BLACK COMPRESSOR 1 OR CONTACTOR LT. BLUE B 11 21 3 6 9 230VAC BLACK BROWN 13 23 FAN 1 R1 3-PIN 2 5 8 24 VAC C1 CONNECTOR GREEN/ PLUG YELLOW 1 4 7 A 4-PIN CONNECTOR 2 x 4 IN. BLUE ORANGE 1 PLUG HANDY BOX YELLOW L1 2 BLACK L1 1
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Ventilation Air (Minimum Position Set up) — If ventilation air is not required, proceed to Step 5. If ventilation air is required, 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 jumper the R and G terminals at the rooftop unit connection SUPPLY AIR TEMPERATURE board. SENSOR MOUNTING 2. Locate the minimum position (MIN POS) potentiometer. LOCATION Turn the potentiometer full CCW to fully close the out- door a
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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. 3. 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
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48TJE,TJF004
48TJD,TJE,TJF005-007
Single-Package Rooftop Heating/Cooling Units
Installation, Start-Up and
Service Instructions
CONTENTS
Page
Disconnect gas piping from unit when leak
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
1
testing at pressure greater than / psig. Pres-
2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
1
sures greater than / psig will cause gas valve
2
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . .
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Fig. 1 — Horizontal Conversion Panels (Viewed from Duct End) Curb should be level. Unit leveling tolerances are shown in Step 3 — Install External Trap for Condensate 3 Fig. 3. This is necessary for unit drain to function properly. Re- Drain — The unit’s / -in. condensate drain connections are 4 fer to Accessory Roof Curb Installation Instructions for addi- located on the bottom and side of the unit. Unit discharge tional information as required. connections do not determine the use of drain con
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ROOF CURB UNIT SIZE ‘‘D’’ ALT ‘‘E’’ “F” “G” CONNECTOR ‘‘B’’ ‘‘C’’ ‘‘A’’ ACCESSORY 48TJ DRAIN HOLE Gas Power Control PKG ACY 3 1′-2″ / ″ 4 CRRFCURB001A00 CRBTMPWR001A00 [356] 3 [19] NPT / ″ 4 004-007 [19] NPT 1 2′-0″ 1 / ″ 4 CRBTMPWR002A00 CRRFCURB002A00 [610] 11 3 [31.7] 1 1′-9 / ″ 1′-4″ 1 / ″ / ″ 16 4 2 [551] [406] [44.5] 1 3 [12.7] NPT / ″ / ″ 2 4 NOTES: CRBTMPWR003A00 [12.7] NPT [19] NPT 1. Roof curb accessory is shipped disassembled. 3 1 2. Insulated panels: / ″ 1 / ″ 4 4 CRBTMPWR004A00 3.
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Be sure that unit is installed so that snow will not block the combustion intake or flue outlet. Unit may be installed directly on wood flooring or on Class A, B, or C roof-covering material when roof curb is used. Although unit is weatherproof, guard against water from higher level runoff and overhangs. Flue vent discharge must have a minimum horizontal clear- ance of 4 ft from electric and gas meters, gas regulators, and gas relief equipment. Minimum distance between unit and other electricall
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NOTES: 1. Dimension in ( ) is in millimeters. 2. Hook rigging shackles through holes in base rail, as shown in detail ‘‘A.’’ Holes in base rails are centered around the unit cen- ter of gravity. Use wooden top skid when rigging to prevent rig- DIMENSIONS MAX ging straps from damaging unit. WEIGHT UNIT ‘‘A’’ ‘‘B’’ ‘‘C’’ 3. Unit weights do not include economizer. See Table 1 for econo- lb kg in. mm in. mm in. mm mizer weights. 48TJE,TJF004 510 231 48TJD,TJE,TJF005 520 236 73.69 1872 37.50 953 33
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Table 1 — Physical Data UNIT SIZE 48TJ E/F004 D/E/F005 D/E/F006 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) Circuit 1 4-4 6-6 6-14 9-0 Cir
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Table 1 — Physical data (cont) UNIT SIZE 48TJ E/F004 D/E/F005 D/E/F006 D/E/F007 FURNACE SECTION Rollout Switch Cutout Temp (F)†† 195 195 195 195 Burner Orifice Diameter (in. ...drill size) Natural Gas Std .113...33 .113...33/.113...33/.129...30 .113...33/.113...33/.129...30 .113...33/.113...33/.129...30 Liquid Propane Alt .089...43 .089...43/.089...43/.102...38 .089...43/.089...43/.102...38 .089...43/.089...43/.102...38 Thermostat Heat Anticipator Setting (amps) 208/230 v and 575 Stage 1 .14 .14
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BOTTOM POWER CHART, THESE HOLES REQUIRED FOR STANDARD DURABLADE CORNER CORNER CORNER CORNER USE WITH ACCESSORY PACKAGES — CRBTMPWR001A00, ECONOMI$ER UNIT ECONOMIZER WEIGHT WEIGHT WEIGHT WEIGHT UNIT (POWER AND CONTROL) AND CRBTMPWR003A00 WEIGHT WEIGHT WEIGHT (A) (B) (C) (D) 48TJ (POWER, CONTROL, AND GAS) Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg THREADED WIRE REQURED E/F004 460 209 34 15.4 47 21.3 140 63.5 105 47.6 159 72.1 56 25.4 CONDUIT SIZE USE HOLE SIZES (MAX.) D/E/F005 470 213 34 15.4 47
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CONDENSER INTAKE COIL LOUVERS TOP COVER CORNER POST FLUE HOOD END PANEL Fig. 7 — Flue Hood Details Fig. 9 — Conduit Installation LEGEND NFGC — National Fuel Gas Code *Field supplied. NOTE: Follow all local codes. SPACING OF SUPPORTS STEEL PIPE X NOMINAL DIMENSIONS DIAMETER (feet) (in.) 1 / 6 2 LEGEND 3 / or 1 8 4 1 1 / or larger 10 IGC — Integrated Gas Unit Controller 4 LED — Light-Emitting Diode Fig. 8 — Gas Piping Guide (With Accessory Thru-the-Curb Ser
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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. 11 — Power Wiring Connections LEGEND AHA — Adjustable Heat Anticipator Field Wiring Factory Wiring Fig. 12 — Low-Voltage Connections 10
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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 /4 1.4 4.9 .6 19.1/19.1 25/25 19/19 90/90 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. 14 for hood details. Secure top of hood with the Install Outdoor-Air Hood 4 screws removed in Step 3. See Fig. 15. 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 option- al economizer hood assembly is packaged and shipped in the fil- ter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical 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. NOTE: Be sure to engage Durablade economizer flange under tabs in return-air opening of the
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3 80 75 198818A TR1 1 ENTHALPY CONTROL 2 65 70 85 50 60 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 24VAC TR 55 REV. B TR B C SO D S 5 1 2 MINIMUM 3 4 POSITION T T1 OPEN P P1 30 D C % B A 90 H U 70 M I D 60 I T Y 10 BLOCK-OFF PLATE Fig. 20 — Horizontal Discharge Block-Off Plate U-SHAPED ECONOMIZER OAT HOLE CONTROL ECONOMIZER ECONOMIZER TOP (TERMINALS ARE UP) T
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ECONOMI$ER CONTROLLER PLUG GEAR-DRIVEN DAMPER LEGEND OAT — Outdoor-Air Thermostat OUTDOOR AIR NOTE: See unit wiring diagram for details. TEMPERATURE SENSOR Fig. 24 — Wiring Connections for Outdoor-Air Thermostat ACTUATOR 0.90 0.80 BAROMETRIC RELIEF DAMPERS Fig. 26 — EconoMi$er Component Locations 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 100 200 300 400 500 600 700 800 CFM Fig. 25 — Durablade Economizer Barometric Relief Damper Characteristics OPTIONAL ECONOMI$ER — See Fig. 26 for E
