Common Questions What units are compatible with the Lennox 56W55 kit

you must use a specific ammonia-compatible model (typically designated with "SS" or specific "P70L/M" prefixes) that features stainless steel internal components

shielding sensitive HVAC internal mechanisms from drafts and debris that can lead to component degradation or erratic pressure switch readings

a 2H/1C or 2H/2C model is required

preventing premature heat exchanger wear and ensuring safe flue gas evacuation through the secondary drainage system

Copeland 037-0018-08 Transformer 318518-761 Common Questions What units areThe Copeland 037 0018 08 Transformer is a heavy duty 50VA control transformer engineered for high demand HVACR applications. As a critical component in the control string, this unit steps down line voltage to a stable 24V output, providing the necessary 2. 08 Amps to drive HVAC contactors, relays, and low voltage control circuits efficiently. Designed for standard mounting, its robust black housing and high grade silicon steel laminates minimize core