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General| Model | 4DCY4024 |
|---|---|
| Refrigerant | R-410A |
| Phase | 1 |
| Type | Air Conditioner |
| Cooling Capacity | 24, 000 BTU/H |
| Voltage | 208/230V |
Installation considerations for horizontal airflow units, including location and airflow requirements.
Recommended clearances for unit installations to ensure proper operation and service access.
Installation considerations for down airflow units, including location and airflow requirements.
Procedure for installing the flue hood onto the unit for proper venting.
Instructions for installing the unit at ground level on a pad.
Steps for installing the unit on a roof using a mounting curb.
Instructions to change the unit's airflow configuration from horizontal to down.
How to install a roof mounting curb for the unit's base.
Guidelines and warnings for safely lifting and rigging the unit during installation.
Procedure for setting the unit onto a roof mounting curb.
Installing the unit on a roof using a fabricated frame structure.
Installing the unit on a flat roof using sleeper rails instead of a curb.
Connecting downflow ductwork to the unit's roof curb.
Guidelines for constructing downflow ductwork to a roof frame.
Connecting horizontal ductwork to the unit.
Important precautions for gas pressure setup and testing.
How to determine and set the gas supply line pressure.
Procedure and tables for sizing natural gas piping based on input.
How to connect a manometer and adjust manifold pressure.
Procedure to check and adjust gas input based on flow.
Information regarding proper electrical power requirements and voltage.
Requirements for installing a weatherproof disconnect switch.
How to protect the branch circuit feeding the unit.
Instructions for running and connecting power supply wires to the unit.
A checklist of critical items before starting the unit.
Procedure for starting the unit in cooling mode.
How to check and compare operating pressures during cooling.
How to check line voltage at the unit during operation.
How to shut down the unit in cooling mode.
Procedure for starting the unit in heat pump heating mode.
How to shut down the unit in heat pump heating mode.
Overview of the gas furnace heating cycle operation.
Procedure for starting the unit in gas heating mode.
A final checklist to ensure proper installation before final operation.
Explanation of the two heating modes: restricted and non-restricted.
Details on restricted mode operation, using outdoor temperature.
Details on non-restricted mode operation, prioritizing heat pump.
The sequence when the unit calls for first stage heat pump operation.
Describes the unit cycling on first stage heat.
Sequence when gas heat is called after heat pump operation.
Describes the unit cycling on second stage gas heat.
Sequence of transitioning from 3rd to 2nd stage gas heating.
Sequence of transitioning from 2nd stage gas to 1st stage heat pump.
Describes the process of turning off from 1st stage operation.
Maintenance tasks that can be performed by the owner.
Maintenance tasks recommended for qualified service personnel.
Maintenance checks to perform at the start of the cooling season.
Maintenance checks to perform at the start of the heating season.
Procedure for cleaning the flue hood and combustion blower.
