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48HJD005-007, 48HJE/HJF004-007
48HJL/HJM/HJN/HJG/HJH/HJK004-006 (LOW NO )
x
Single-Package Rooftop Heating/Cooling
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
Disconnect gas piping from unit when leak
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
1
testing at pressure greater than / psig. Pres-
2
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
1
sures g
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2 D ALT “E” “F” “G” CONNECTOR ROOF CURB UNIT SIZE UNIT SIZE B C “A” DRAIN HOLE GAS POWER CONTROL PKG. ACCY. ACCESSORY 48/50HJ 3 3 / ″ [19] NPT 1 CRBTMPWR001A00 / ″ 4 / ″ CRRFCURB001A00 1′-2″ [356] 4 2 004-007 1 [19] NPT [12.7] NPT 1 / ″ [31.7] CRBTMPWR002A00 4 CRRFCURB002A00 2′-0″ [610] 11 3 1 48HJD004-007 1′-9 /16″ 1′-4″ 1 /4″ / ″ 2 3 /4″ [19] NPT CRBTMPWR003A00 50HJF004-007 [551] [406] [44.5] [12.7] NPT 1 / ″ 2 3 [12.7] NPT / ″ 4 1 1 / ″ [31.7] CRBTMPWR004A00 4 [19] NPT NOTES: 6. Service clear
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MAXIMUM ALLOWABLE CONDENSATE PAN (SIDE VIEW) DIFFERENCE (in.) DRAIN PLUG A-B B-C A-C NOTE: Drain plug is shown in factory-installed position. 0.5 1.0 1.0 Fig. 3 — Condensate Drain Pan Fig. 2 — Unit Leveling Tolerances reference. See Table 1 and Fig. 4 for additional information. Operating weight is shown in Table 1 and Fig. 4. Step 2 — Field Fabricate Ductwork — Secure all Lifting holes are provided in base rails as shown in Fig. 5. ducts to roof curb and building structure on vertical discharge
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NOTES: MAX 1. Place unit on curb as close as possible to the duct end. “A” “B” “C” UNIT WEIGHT 2. Dimension in ( ) is in millimeters. 48HJ lb kg in. mm in. mm in. mm 3. Hook rigging shackles through holes in base rail as shown in detail ‘‘A.’’ Holes in base rails are centered around the unit cen- 004 530 240 73.69 1872 35.50 902 33.31 847 ter of gravity. Use wooden top skid when rigging to prevent rig- 005 540 245 73.69 1872 35.50 902 33.31 847 ging straps from damaging unit. 4. Weights includ
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Table 1 — Physical Data BASE UNIT 48 HJE/F/H/K/M/N004 HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006 HJD/HJE/HJF007 NOMINAL CAPACITY 34 5 6 OPERATING WEIGHT (lb) Unit 530 540 560 615 With Durablade Economizer 564 574 594 649 With EconoMi$er 577 587 607 662 With MoistureMiser Dehumidification Package 548 558 578 633 Roof Curb 115 115 115 115 COMPRESSOR Scroll Quantity 11 1 1 Oil (oz) 42 53 50 60 REFRIGERANT TYPE R-22 Operating Charge (lb-oz) Standard Unit 5- 8 8-6 10- 0 9-10 Unit With MoistureMize
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Table 1 — Physical Data (cont) BASE UNIT 48 HJE/F/H/K/M/N004 HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006 HJD/HJE/HJF007 FURNACE SECTION Rollout Switch Cutout Temp (F)† 195 195 195 195 Burner Orifice Diameter (in. ...drill size)** Natural Gas — Std HJE .113...33 HJD .113...33 HJD .113...33 HJD .113...33 HJF .113...33 HJE .113...33 HJE .113...33 HJE .113...33 — HJF .129...30 HJF .129...30 HJF .129...30 HJH .113...33 HJG .113...33 HJG .113...33 — HJK .113...33 HJH .113...33 HJH .113
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BOTTOM POWER CHART, THESE HOLES REQUIRED FOR STANDARD DURABLADE CORNER CORNER CORNER CORNER USE WITH ACCESSORY PACKAGES — CRBTMPWR001A00 ECONOMI$ER UNIT ECONOMIZER WEIGHT WEIGHT WEIGHT WEIGHT UNIT THROUGH CRBTMPWR004A00 WEIGHT WEIGHT WEIGHT (A) (B) (C) (D) 48HJ Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg THREADED WIRE REQURED CONDUIT SIZE USE HOLE SIZES (MAX.) 004 530 240 34 15.4 47 21.3 127 57.6 122 55.3 138 62.6 143 64.9 1 7 / ″ ″ 24 V / ″ ″ [22.2] 005 540 245 34 15.4 47 21.3 129 58.5 124 56.2
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NOTE: If accessory thru-the-bottom connections and roof curb are used, refer to the Thru-the-Bottom Accessory Installation Instructions for information on power wiring and gas connec- tion piping. The power wiring, control wiring and gas piping can be routed through field-drilled holes in the basepan. The basepan is specially designed and dimpled for drilling the access connection holes. FIELD CONTROL WIRING — Install a Carrier-approved accessory thermostat assembly according to installation in-
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LEGEND C— Contactor COMPS — Compressors EQUIP — Equipment GND — Ground IFC — Indoor (Evaporator) Fan Contactor NEC — National Electrical Code TB — Terminal Block Fig. 8 — Power Wiring Connections RACEWAY LOW VOLTAGE INTEGRATED GAS UNIT CONNECTIONS CONTROLLER (IGC) LEGEND AHA — Adjustable Heat Anticipator HOLE IN END PANEL (HIDDEN) CC — Cooling Compensator TC — Thermostat-Cooling TH — Thermostat-Heating Fig. 10 — Field Control Wiring Rac
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Table 2A — 48HJ Electrical Data Standard Motor (Units Without Electrical Convenience Outlet) POWER MINIMUM UNIT VOLTAGE COMBUSTION NOMINAL COMPRESSOR OFM IFM SUPPLY DISCONNECT UNIT RANGE FAN MOTOR VOLTAGE WITH OUTLET SIZE* 48HJ (V-Ph-Hz) Min Max RLA LRA FLA FLA FLA MCA MOCP† FLA LRA 208/230-1-60 187 254 16.0 88.0 0.7 4.9 .57 25.6/25.6 35/35 25/25 101/101 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .57 18.5/18.5 25/25 18/18 90/ 90 004 (3 Tons) 460-3-60 414 508 5.1 39.0 0.4 2.2 .30 9.0 15 9 46 575-3-
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Table 2C — 48HJ High-Static Motor Units Without Electrical Convenience Outlet MINIMUM UNIT VOLTAGE COMPRESSOR COMBUSTION POWER NOMINAL OFM IFM DISCONNECT UNIT RANGE (each) FAN MOTOR SUPPLY VOLTAGE SIZE* 48HJ (V-Ph-Hz) Min Max RLA LRA FLA FLA RLA MCA MOCP† FLA LRA 208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 19.4/19.4 25/25 19/19 120/120 004 460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 9.4 15 9 60 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 7.7 15 8 48 208/230-3-60 187 254 13.5 99.0 0.7 5.8 0.6 23.4/23.4 30/3
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OPTIONAL DURABLADE ECONOMIZER — The option- c. Install horizontal discharge block-off plate over al economizer hood assembly is packaged and shipped in the the opening on the access panel. (Block-off plate filter section. Damper blades and control boards are installed at MUST be installed before installing hood assem- the factory and the economizer is shipped in the vertical dis- bly.) See Fig. 17. charge position. 6. Remove 12-pin blue and yellow wire jumper plug from NOTE: Horizontal discharge
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9. Replace outdoor-air opening panel using screws from ECONOMIZER ECONOMIZER ECONOMIZER TOP CONTROL BOARD PLUG MOTOR SCREW 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 supplied with economizer on OAT. See Fig. 20. Set for 3° F below indoor room thermostat set- ting. If accessory enthalpy control (EC) is u
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3 75 80 198818A TR1 1 ENTHALPY CONTROL 2 85 50 60 65 70 ACTS SHO CONT WN IN HIGH ENTHALPY ATE OR UNPOWERED ST CONTACT RATINGS: 1.5A RUN, 3.5A IN AT 24V 1 VDC RUSH AC 3 mA MIN. AT 1 CW–SETPOINTS–CCW DAMPER CLOSED DAMPER OPEN OUTDOOR TEMP. °F 24V TR AC 55 REV. B TR B C S O D S 5 1 2 3 MINIMUM 4 POSITION T T1 OPEN P P1 30 D C % B A H 90 U 70 M I 60 D I T Y 10 U-SHAPED HOLE (NOT SHOWN) ECONOMIZER PLUG WIRING HARNESS Fig. 18 — Typical Durablade Economizer and OAT Wiring Harness (TERMINALS ARE UP) T
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0.90 the EconoMi$er plug into the unit wiring harness. Refer to wiring diagram Fig. 30 and 31. Also refer to Fig. 32 if installing an accessory power exhaust. 0.80 9. Install the complete hood assembly on the unit and secure using the screws provided. 0.70 10. Remove the indoor fan motor access panel. See Fig. 33. 11. Mount the supply-air temperature sensor to the lower left 0.60 portion of the indoor blower housing with the two (2) screws provided (see Fig. 34). Connect the violet and 0.50 pink
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OUTDOOR AIR ECONOMIZER CLIP SEAL STRIP UNIT FILTER OPENING OUTDOOR AIR HVAC UNIT RACK PANEL HOOD TOP SCREEN ECONOMIZER RETAINER UNIT BASE OUTDOOR AIR SEAL STRIP INLET ECONOMIZER REAR SCREENS FLANGE ASSEMBLED Fig. 28 — Rear EconoMi$er Flange Installation EXHAUST HOOD OUTDOOR AIR HOOD SIDES Fig. 26 — Outdoor-Air Hood Assembly WIRING HARNESS OUTDOOR AIR BLOCK-OFF PLATE Fig. 27 — Completed Hood Assembly Fig. 29 — EconoMi$er Installed LEGEND OAT — Outdoor-Air Thermostat Fig. 30 — EconoMi$er Wiring 16
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CONTROL BOX/BURNER ECONOMI$ER BROWN TEMP ACCESS PANEL CONTROLLER VIOLET TEMP OUTDOOR AIR OAT COM WHITE SENSOR COM OUT RED PWR OAH -15 V BROWN RAT TEMP VIOLET RETURN TEMP COM AIR WHITE COM SENSOR RAH OUT RED +15 V PWR CO SENSOR 2 (+) V+ 24 CO 2 CO COM 2 COM VAC DAT INDOOR FAN MOTOR COM ACCESS PANEL AND BLOWER SUPPLY AIR TEMPERATURE SENSOR REM POT Fig. 33 — Typical Access Panel Locations PINK COM TEMP (Standard Efficiency Unit Shown) LED VIOLET TEMP COM Fig. 31 — EconoMi$er Sensor Wiring POWER EXH
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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 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
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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-fan motors. Refer to Tables 8-25 for performance data. See Tables 26 and 27 for accessory and option static pressure drops. BELT-DRIVE MOTORS — Fan motor pulleys are factory set for speed shown in Table 1. Check pulley alignment and be
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Table 5A — 48HJ Fan Rpm at Motor Pulley Setting With Standard Motor STANDARD MOTOR* MOTOR PULLEY TURNS OPEN UNIT 48HJ 1 1 1 1 1 1 0 / 11 / 22 / 33 / 44 / 55 / 6 2 2 2 2 2 2 004 1090 1055 1025 990 960 925 890 860 825 795 760 —— 005 1185 1150 1115 1080 1045 1015 980 945 910 875 840 —— 006 1460 1425 1385 1350 1315 1275 1240 1205 1165 1130 1095 1055 1020 (single-phase) 006 (3-phase) 1585 1540 1490 1445 1400 1350 1305 1260 1210 1165 1120 —— and 007 *Approximate fan rpm shown (standard motor/drive).
