Lennox 74W72 Gas Manifold 320788-703 this unit is designed to

this unit is designed to handle large damper control and characterized control valve setups where fail-safe reliability is non-negotiable

the Functional Devices TR50VA001 Transformer is a reliable workhorse designed for Class 2 control circuits

Enhanced Reliability: Features enclosed snap-action contacts and a dust cover

9-13 PSI Spring Range Field Mounting Spring Kit for 1/2" Stroke Valve Bodies

Always replace with a new unit when odors become perceptible

Lennox 74W72 Gas Manifold 320788-703 this unit is designed toThe White Rodgers 50A55 843 is a universal integrated furnace control board designed to streamline service calls by replacing a vast range of silicon carbide ignition modules from White Rodgers and various OEMs like Carrier, Goodman, Lennox, and Trane. This hot surface ignition (HSI) controller utilizes a microprocessor to provide constant monitoring of the gas burner, inducer motor, and fan cycles. It features a replaceable 5 amp automotive style