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General| HSPF Rating | Up to 9.5 |
|---|---|
| Refrigerant | R-410A |
| Compressor Type | Scroll |
| Stages | Single-Stage |
| Sound Level | As low as 72 dB |
| Voltage | 208/230V |
| Cooling Capacity | 24, 000 - 60, 000 BTU/h |
| Heating Capacity | 24, 000 - 60, 000 BTU/h |
| Phase | 1 |
General safety advice for installing and servicing AC units due to system hazards.
Only trained and qualified personnel should install or service this equipment.
Observe precautions in literature, tags, stickers, and labels attached to equipment.
Tasks before installing the unit, including uncrating and inspecting shipment.
Consult codes, allow space for airflow, wiring, and piping, ensure unrestricted airflow.
Details on model numbers, cooling capacities, and power supply information.
Specifications for compressor type, quantity, RLA, LRA, and fan motor performance.
Information on safety devices, electrical controls, refrigerant type, and piping.
Guidance on voltage range, power supply, ground wire, and circuit breaker sizing.
Diagrams showing physical dimensions and piping connections for specific models.
Diagrams illustrating physical dimensions and component locations for larger models.
Instructions for safely rigging, lifting, and positioning the unit.
Procedure to loosen self-locking bolts on the compressor before starting.
Guidance on installing filter driers and sight glasses at specified locations.
Recommendations for installing solenoid valves in liquid lines for specific applications.
Instructions for making pipe connections, including using nitrogen during brazing.
Details on routing power wires and ensuring the unit is properly grounded.
Procedures for evacuating, dehydrating, and leak testing the refrigerant system.
Steps for energizing crankcase heaters and adding preliminary refrigerant charge.
Steps to start the unit and check/add compressor oil to the correct level.
Explanation of capacity control mechanisms and the Time Guard II circuit.
Function of the crankcase heater and details on outdoor fan assembly.
Information on lubrication for fan motors and compressors.
Step-by-step guide on how to clean the unit's coils.
Diagnosing and resolving issues when the compressor fails to start or cycles improperly.
Troubleshooting causes for insufficient cooling or excessive unit run times.
Addressing noise issues, oil loss, frosted lines, and compressor load/unload faults.
Schematic and component arrangement for 38AE020/38AF020 models.
Schematic and component arrangement for 38AE025-040/38AF025-040 models.
Schematic and component arrangement for 38AE050-060/38AF050-060 models.
Operation of the power LED and 3-minute compressor delay timer upon power application.
Module checks for 24vac, delay status, and HPS/COTP during a cooling call.
Module monitors HPS/COTP and OPS states, shutting down compressor on alarms.
Recording outdoor unit, indoor unit, and accessory details before start-up.
Checking for shipping damage, power supply, grounding, and circuit protection.
Verifying thermostat wiring, crankcase heater, solenoid valves, and leak checks.
Measuring voltage imbalance and recording operational data during start-up.
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