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MAXIMUM VENT LENGTH TABLE FOR DUCANE 90+ GAS FURNACES Use below table for Standard (2 Pipe) venting system.
Use below table for Concentric venting system.
NIGHT SERVICE KITS
These “Night Service Kits” include all the common service components packaged conveniently for servicing the 33” Armstrong, Ducane and AirEase furnaces. Included in the kit are the appropriate gas valve, transformer, flame sensor, igniter, and control board. These kits are ideal for keeping track of parts used that need replenishing, and to ensure availability of parts for after hour emergency service.
CAT. NO. MFG. NO. FURNACE MODEL PREFIX 4D1129 4D1130 4D1131