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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
this mechanical bypass damper requires no electrical wiring
This OEM replacement part functions as a SPDT limit switch
we recommend verifying specific mounting hardware requirements for non-Reznor units
audible air hissing at the control head
fan-cooled motor with thermal overload protection to prevent stator burnout during peak summer loads
Fenwal 35-705500-501 Control 30067439-890 this mechanical bypass damper requiresThe Fenwal 35 705500 501 is a microprocessor based Direct Spark Ignition (DSI) control engineered for 120V gas fired systems. This 120V ignition module provides a fixed 5 second pre purge to clear the combustion chamber and a 4 second trial for ignition (TFI) to ensure safe burner startup. Designed for compatibility with both natural gas and LP applications, this replacement furnace control board utilizes Detect A Flame technology for precise flame