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making it a standard component for hydronic heating maintenance and boiler safety upgrades
Proper brazing technique is essential during installation to protect the internal seal and glass integrity
Standardized Ports: Features the factory-correct tappings for equalizing pipes and blow-down valve integration
Technicians should verify the seal integrity to ensure optimal HVAC combustion efficiency and quiet operation
Fenwal 35-605311-221 Module 322838-754 making it a standard componentUpgrade your gas fired appliance's reliability with the Fenwal 35 605311 221, a microprocessor based Direct Spark Ignition (DSI) control specifically engineered for precision and safety. This 24 VAC module replaces older, less stable ignition boards in furnaces, boilers, and water heaters, offering a robust 30 second pre purge cycle to clear the combustion chamber before the 4 second Trial For Ignition (TFI). As a veteran grade gas ignition module, it
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