this specific programmable memory chip is pre-programmed with control logic specifically engineered for R-22 refrigerant 2-compressor systems

preventing pressure creep in the manifold

utilizing this genuine OEM part ensures system compatibility and adheres to the original equipment manufacturer’s performance specifications

Can this SPDT relay replace a standard SPST sequencer

Pressure Rated: Optimized for use with high-efficiency fin and tube heat pumps

Lennox 44W55 Collector Box 321702-401 this specific programmable memory chipThe Lennox 44W55 Collector Box is a critical OEM replacement component engineered for high efficiency gas furnaces, specifically designed to manage the transition of flue gases and corrosive condensate. As a veteran grade furnace collector box with gasket, this assembly (also identified by part numbers 102109 02 and 78L3901) ensures the airtight integrity required for the condensate management system. Its robust construction is specifically intended