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General| Cooling Capacity | 12000 BTU/h |
|---|---|
| Heating Capacity | 12000 BTU/h |
| Refrigerant | R-410A |
| Phase | 1 |
| Voltage | 208/230V |
Provides detailed specifications for LGH/LCH092H and 102H models, covering cooling, refrigerant, gas heating, and electrical data.
Provides detailed specifications for LGH/LCH120H and 150H models, including cooling, refrigerant, gas heating, and electrical data.
Details gas heating performance specifications, including input/output Btuh, temp rise, thermal efficiency, and gas supply connections.
Provides specifications for direct drive models LGH094U4E, LGH122U4E, and LGH152U4E, covering cooling, refrigerant, and electrical data.
Provides specifications for belt drive models LGH094U4M, LGH122U4M, and LGH152U4M, covering cooling, refrigerant, and electrical data.
Details gas heating performance specifications for LGH/LCH094U, 122U, 152U models, including input/output Btuh and gas supply connections.
Electrical data for 7.5 ton high efficiency units, including voltage, compressor amps, and motor specs.
Electrical data for 8.5 ton high efficiency units, detailing voltage, compressor amps, and motor specifications.
Electrical data for 10 ton high efficiency units, covering voltage, compressor, and motor electrical parameters.
Electrical data for 12.5 ton high efficiency units, listing voltage, compressor amps, and motor specs.
Electrical data for 7.5 ton direct drive units, including voltage, compressor, and motor load data.
Electrical data for 10 ton direct drive units, detailing voltage, compressor amps, and motor specifications.
Electrical data for 12.5 ton direct drive units, specifying voltage, compressor, and motor electrical parameters.
Electrical data for 7.5 ton belt drive units, including voltage, compressor, and motor load information.
Electrical data for 10 ton belt drive units, detailing voltage, compressor amps, and motor specs.
Diagram showing parts arrangement for 092H, 102H, 120H, 150S units with all-aluminum coil system.
Diagram showing parts arrangement for 092H, 102H, 120H, 150H units with fin/tube coil.
Diagram showing parts arrangement for 094U, 122U, 152U units with fin/tube coil.
Diagram showing control box parts arrangement for standard and high efficiency non-CE units.
Diagram showing control box parts arrangement for ultra high efficiency non-CE units.
Diagram showing control box parts arrangement for CE units.
Overview of the A55 Unit Controller providing unit control functions, status, diagnostics, and parameter settings.
Description of scroll compressors B1 and B2 and their role in cooling circuits.
Details on auto-reset SPST N.C. high pressure switches S4 and S7 that open on pressure rise.
Details on auto-reset SPST N.O. low pressure switches S87 and S88 that open on pressure drop.
Procedure for setting minimum damper positions to maintain required ventilation air volumes.
Instructions on how to configure the VFD bypass option for manual or automatic operation.
Description of the Johnson Controls burner ignition control, its functions, and sequences.
Details on the flame roll-out limit switch S47, its location, and function in preventing overheating.
Information on the combustion air prove switch S18 that monitors inducer operation and closes on negative pressure.
Information on two-stage redundant gas valves GV1, including types and operation.
Procedure for checking and verifying refrigerant charge in all-aluminum coil units using pressure and temperature measurements.
Procedure for checking refrigerant charge in fin/tube coil units with TXV, using operating pressures.
Method for verifying charge using approach temperature, comparing liquid temp to ambient temp.
Pre-start-up checks including electrical, refrigerant lines, voltage, amp draw, and blower belt.
Instructions for starting up the cooling mode, referencing refrigerant circuit diagrams.
Step-by-step procedure for placing the furnace into operation, including gas valve and burner checks.
Procedures for performing a safety or emergency shutdown of the unit.
Procedures for performing heating system service checks, including gas piping and pressure tests.
Guidelines for gas supply piping requirements, including pressure drop and connection size.
Procedures for testing gas piping, emphasizing isolation of the gas valve and pressure limits.
Instructions for testing gas supply pressure at the unit's inlet, ensuring it falls within specified ranges.
Procedure for checking and adjusting manifold pressure after line pressure is verified and adjusted.
Method to check proper gas flow to burners by determining Btuh input and dividing by gas heating capacity.
Instructions for checking and setting the spark electrode gap for proper unit operation.
Troubleshooting steps for direct drive blower motor faults when the S52 switch is not configured.
Troubleshooting steps for direct drive blower motor faults when the S52 switch is configured.
General failure handling and troubleshooting steps for direct drive blowers, including clearing delays and checking alarms.
