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double-throw (SPDT) snap-action switch
a malfunctioning primary aquastat
How do I test a Lochinvar thermocouple
Contractor Grade Materials: All components are manufactured from high-grade elastomers designed for longevity in varied water chemistries
This tubing meets the strict ASTM B483 standard for drawn aluminum
Fenwal 35-665535-113 Control Freon double-throw (SPDT) snap-action switchThe Fenwal 35 665535 113 Control is a microprocessor based hot surface ignition (HSI) module engineered to handle automated sequencing and flame monitoring in 24 VAC gas fired heating systems. This Fenwal replacement ignition board features an integrated combustion blower relay with a 60 second post purge and a 15 second pre purge, optimizing airflow before and after the heating cycle. Designed for high reliability start ups, the igniter control