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50HG014-028
Single Package Rooftop Units
Electric Cooling with Electric Heat Option
Installation Instructions
Follow all safety codes. Wear safety glasses and work
CONTENTS
gloves. Use quenching cloth for unbrazing operations. Have
Page
fire extinguishers available for all brazing operations.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Step 1 — Provide Unit Support . . . . . . . . . . . . .
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Fig. 1 — Roof Curb Details 2
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Four lifting holes are provided in the unit base rails as Step 2 — Remove Shipping Rails — Remove ship- shown in Fig. 3. Refer to rigging instructions on unit. ping rails prior to lowering unit onto roof curb. See Fig. 2. The rails are attached to the unit at both the return end and condens- POSITIONING — Maintain clearance, per Fig. 4, around and er end. Remove the screws from both ends of each rail. Be above unit to provide minimum distance from combustible careful not to drop the rails onto a
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Fig. 3 — Rigging Details 4
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Fig. 4 — Base Unit Dimensions 5
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Table 1 — Physical Data UNIT 50HG 014 016 020 208/230 208/230 208/230 VOLTAGE 575 575 575 and 460 and 460 and 460 NOMINAL CAPACITY (Tons) 12.5 12.5 15 15 17.5 17.5 OPERATING WEIGHT (lb) 50 SERIES (Cooling Only) 2017 2017 2111 2111 2139 2139 COMPRESSOR Quantity 2 2 3333 Number of Refrigerant Circuits 2 2 3333 Oil (ounces) Ckt A...Ckt B...Ckt C 72...72...NA 72...72...NA 68...68...68 68...68...68 68...68...72 68...68...72 REFRIGERANT TYPE R-22 Expansion Device TXV TXV TXV TXV TXV TXV Operating Char
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Table 1 — Physical Data (cont) UNIT 50HG 024 028 208/230 VOLTAGE 575 ALL and 460 NOMINAL CAPACITY (Tons) 20 20 25 OPERATING WEIGHT (lb) 50 SERIES (Cooling Only) 2187 2187 2446 COMPRESSOR Quantity 33 2 Number of Refrigerant Circuits 33 2 Oil (ounces) Ckt A...Ckt B...Ckt C 72...72...72 72...72...72 110...110...NA REFRIGERANT TYPE R-22 Expansion Device TXV TXV TXV Operating Charge (lb) Circuit A 13.8 13.8 23.9 Circuit B 13.9 13.9 21.5 Circuit C 15.5 15.5 NA CONDENSER COIL Rows...Fins/inch 2...17 2.
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HORIZONTAL APPLICATIONS — Horizontal units are ALIGNMENT HOLE shipped with outer panels that allow for side by side horizontal (IN BASE RAIL) duct connections. If specified during ordering, the unit will be shipped with the vertical duct openings blocked off from the factory, ready for side supply installation. If the horizontal ALIGNMENT option was not specified at time of ordering the unit, a field- HOLE SHOULD installed accessory kit is required to convert the vertical unit LINE UP WITH into
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Operating voltage to compressor must be within voltage range indicated on unit nameplate. On 3-phase units, voltages between phases must be balanced within 2%. Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. FIELD CONTROL WIRING — Unit can be controlled with either a Carrier-approved accessory thermostat or a Carrier- approved space temperature sensor. Install thermostat accord- ing to th
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Table 2A — Electrical Data (Units Without Optional Convenience Outlet) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT UNIT NOMINAL OFM IFM RANGE No. 1 No. 2 No. 3 HEAT EXHAUST SUPPLY SIZE SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 60/ 59 70/ 70 70/ 70 3.7 10.6/ 9.6 21.0 5.9 72/ 71 90/ 80 80/ 80 —— —— — 66/ 64 80/ 80 80/ 70 5.0 16.7/15.2 21.0 5.9 78/ 7690/ 90 90/ 90 —— — 60/ 60 70/ 70 70/ 70 3.7 10.6/ 9.6 21
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Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 71/ 70 80/ 80 80/ 80 3.7 10.6/ 9.6 2 1.0 5.9 83/ 82 90/ 90 100/ 90 —— —— — 77/ 75 90/ 90 90/ 90 5.0 16.7/15.2 2 1.0 5.9 89/ 87 100/100 100/100 —— — 78/ 87 80/ 90 80/ 90 3.7
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Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 84/ 83 100/100 100/ 90 5.0 16.7/15.2 2 1.0 5.9 96/ 94 110/110 110/110 —— —— — 92/ 89 110/110 100/100 7.5 24.2/22.0 2 1.0 5.9 104/101 125/110 125/110 —— — 86/ 94 100/100 100
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Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 96/ 94 110/110 110/110 5.0 16.7/15.2 2 1.0 5.9 107/106 125/125 125/125 —— —— — 104/101 125/110 125/110 7.5 24.2/22.0 2 1.0 5.9 115/113 125/125 150/125 —— — 96/ 94 110/110 1
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Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 139/137 175/175 150/150 7.5 24.2/22.0 2 1.0 5.9 151/149 175/175 175/175 —— —— — 146/143 175/175 175/175 10.0 30.8/28.0 2 1.0 5.9 158/155 200/200 175/175 —— — 139/137 175/17
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Table 2B — Electrical Data (Units With Optional Convenience Outlet) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 65/ 64 80/ 80 70/ 70 3.7 10.6/ 9.6 2 1.0 5.9 77/ 76 90/ 90 80/ 80 —— —— — 71/ 69 90/ 80 80/ 70 5.0 16.7/15.2 2 1.0 5.9 83/ 81 100/100 90/ 90 —— — 65/ 66 80/ 80 70/ 70 3.7 10.6/ 9.6 2
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Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No.1 No.2 No.3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 76/ 75 90/ 90 80/ 80 3.7 10.6/ 9.6 2 1.0 5.9 88/ 87 100/100 100/ 90 —— —— — 82/ 80 90/ 90 90/ 90 5.0 16.7/15.2 2 1.0 5.9 94/ 92 110/100 100/100 —— — 85/ 93 90/100 80/ 90 3.7 10.6
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Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 89/ 88 110/110 100/ 90 5.0 16.7/15.2 2 1.0 5.9 101/ 99 110/110 110/110 —— —— — 97/ 94 110/110 100/100 7.5 24.2/22.0 2 1.0 5.9 109/106 125/125 125/110 —— — 92/100 110/110 100/
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Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 101/ 99 110/110 110/110 5.0 16.7/15.2 2 1.0 5.9 112/111 125/125 125/125 —— —— — 109/106 125/125 125/110 7.5 24.2/22.0 2 1.0 5.9 120/118 125/125 150/125 —— — 101/100 110/110 11
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Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont) COMPRESSOR VOLTAGE ELECTRIC POWER POWER DISCONNECT OFM IFM UNIT NOMINAL RANGE HEAT EXHAUST SUPPLY SIZE No. 1 No. 2 No. 3 SIZE VOLTAGE 50HG (3 Ph, 60 Hz) FLA FLA Min Max RLA LRA RLA LRA RLA LRA Qty Hp kW FLA Hp FLA Qty Hp MCA MOCP* FLA (ea) (ea) —— — 144/142 175/175 150/150 7.5 24.2/22.0 2 1.0 5.9 156/154 200/200 175/175 —— —— — 151/148 175/175 175/175 10.0 30.8/28.0 2 1.0 5.9 163/160 200/200 175/175 —— — 144/142 175/175 1
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3. Remove the bracket holding the bottom half of the hood in the shipping position. Remove the hood bottom half and filters (or manual dampers on units so equipped) from outdoor section. NOTE: On units without economizers, the components are attached to the unit basepan. To access the compo- nents, remove the panel below the outdoor air intake section. 4. Remove inner filter track from shipping position in out- door section. Position inner filter track so the track is fac- ing outward from the u
