the 13A15 vent protector is typically sold separately

or repeated ignition failures

Does this assembly include the flame sensor and igniter

The 3R7C0 includes a standard 1/4" threaded end designed to fit directly into compatible Warrick fittings without additional adapters

Lennox 22J53 Relay 320788-702 the 13A15 vent protector isFor mid to lower sequence staging in electric furnaces and air handlers, the Lennox 22J53 Relay is the industry standard for managing high amperage heating elements and blower motor timing. This genuine OEM sequencer (lower seq) relay operates on a 24V control circuit, providing critical load management to prevent simultaneous activation of multiple heat strips. By utilizing precise time delayed switching, it staggers the electrical draw, effectively