For contractors performing diagnostic services

This bypasses the pressure setting to allow for maximum flow when purging air from the loops or filling the system for the first time

which features a shorter length (2-1/16" insertion) specifically designed to fit into standard 3/4" NPT reducing tees without obstructing flow or causing clearance issues

including the 206A

If the switch detects a blocked vent

Fenwal 35-605601-007 Control Els PW 29614 For contractors performing diagnostic servicesThe Fenwal 35 605601 007 is a high performance 24V Direct Spark Ignition (DSI) control module engineered for precise burner sequencing in commercial and residential gas fired heating systems. This microprocessor based ignition control is designed with no pre purge (0 second) and a 15 second trial for ignition (TFI), making it a reliable solution for applications requiring immediate ignition and robust flame supervision. Utilizing Detect A Flame