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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
35" WC to ensure accurate air proving and system safety
the plastic enclosure is optimized for air-side applications
What causes a draft pressure switch to trip besides a mechanical failure
Technicians should verify the seal integrity to ensure optimal HVAC combustion efficiency and quiet operation
Fenwal 35-605311-221 Module 322838-754 35" WC to ensure accurateUpgrade 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
