Fenwal 35-705600-005 Control R-410A not for steam boilers

not for steam boilers

Common signs include the condenser coil feeling excessively hot to the touch

or resistance readings exceeding 1600 ohms while the flame is present

What is the primary application for this valve combo

How do I configure the A421 for cooling vs

Fenwal 35-705600-005 Control R-410A not for steam boilersThe Fenwal 35 705600 005 is a professional grade 120 VAC Direct Spark Ignition (DSI) control designed for precise burner management in gas fired equipment. This microprocessor based module replaces older analog systems, offering significantly improved timing accuracy and robust flame sensing capabilities. Engineered with a 10 second Trial for Ignition (TFI) and an integrated 120V gas valve relay, it ensures reliable startup and consistent flame