Description
The Lennox 49W91 Relay is an electromechanical switching component used for low-voltage circuit control in heating and cooling equipment. It is installed within control panels of furnaces, air handlers, and packaged units in HVAC systems to manage electrical signal routing between thermostats, motors, and auxiliary loads. The part operates on a 22 VDC coil supply with DPST contact configuration, enabling dual-circuit switching through a single control input. In application, it is integrated into control assemblies where it supports coordinated operation of system equipment.
