this is a parallel circuit (voltage sensing) switch designed to control a single resistive heating element by cycling power to maintain the desired temperature

this 3/8 inch crank arm facilitates the mechanical connection between the actuator drive shaft and the damper linkage

Engineered specifically for two-position steam applications

allowing for straightforward installation without field modifications

while rebuild kits can be voltage-specific

Fenwal 35-704600-001 Control THPU32HP7Y this is a parallel circuitThe Fenwal 35 704600 001 is a microprocessor based 120V Direct Spark Ignition (DSI) control engineered for high performance gas fired equipment. This ignition module is designed to manage natural, LP, and manufactured gas systems with a focus on precision and safety. Featuring a 4 second Trial for Ignition (TFI) and a strict 1 try ignition sequence, it eliminates unburned gas buildup by entering immediate lockout if flame monitoring is not