Lennox 74W72 Gas Manifold 320788-703 the Functional Devices TR50VA001 Transformer
Baker’s notes & crumb story
Description
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
High-Efficiency Blower: Dual-speed motor (3300/2400 RPM) optimizes performance for various BTU inputs
Always replace with a new unit when odors become perceptible
Lennox 74W72 Gas Manifold 320788-703 the Functional Devices TR50VA001 TransformerThe 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