the 97H76 damper door spring maintains its structural integrity despite constant thermal expansion and contraction within the air handler

which causes hot combustion gases to spill out of the draft hood and reach the 200°F setpoint

Galvanic Protection: Facilitates dielectric isolation to stop the transfer of electrical currents between copper and steel piping

Optimized Flue Performance: Provides a secure

Robertshaw 5500-234 Infinite Switch Els PW 17895 the 97H76 damper door springThe Robertshaw 5500 234 Infinite Switch is a professional grade, voltage sensing control engineered for precise 240V AC resistive load management in commercial cooking and HVAC equipment. Designed as a primary replacement for Robertshaw INF and VSI series energy regulators, this M Series unit features a compact, low profile housing that allows for streamlined installation in tight control panels. Operating with a 5% input at low, it facilitates