What is the purpose of the zero-adjustment screw on this model

Designed for seamless field integration

reducing unnecessary service calls while maintaining critical safety limits

this specific body gasket is compatible with the 813 and 883 (800 Series) as well as the 973 and 983 (900 Series) inverted bucket steam traps

Designed for panel mounting

Fenwal 35-605601-103 Control Els PW 29614 What is the purpose ofThe Fenwal 35 605601 103 is a microprocessor based 24V Direct Spark Ignition (DSI) control engineered for precision timing and safety in gas fired appliances. Built for the rigors of commercial cooking, boilers, and furnaces, this ignition module features a 15 second pre purge to clear the combustion chamber and a 7 second trial for ignition (TFI) to ensure reliable flame establishment. As a veteran grade HVAC control board, it utilizes DETECT A FLAME