Service manual for International Comfort Products 440 08 2002 02 multi‑position 2‑stage gas furnace, covering installation, operation, and maintenance.
This Service Manual provides qualified HVAC technicians with detailed instructions for installing, servicing, and maintaining the multi‑position, two‑stage gas furnaces identified by part number 440 08 2002 02. It includes safety warnings, unit identification, furnace theory of operation, electrical supply requirements, interlock and pressure switch functions, gas supply guidelines, burner details, and temperature‑rise verification.
The manual also contains wiring diagrams, technical service data, blower performance tables, and high‑altitude operation procedures. It is intended to be used alongside the installation manual and technical support documents to ensure correct diagnosis and repair of the furnace.
| Supply Voltage (nominal) | 115 V |
|---|---|
| L.P. Pressure Switch Closure Pressure | ≥ 8.0 in. WC |
The furnace requires a nominal 115 V supply, and the voltage must be between 97 V and 132 V.
This manual explains 1 error code. Open a code for its meaning, causes and what to do: