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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
this model features a factory-calibrated set point of 0
ensuring the furnace maintains safe draft pressure throughout the heating cycle
where the switch will open the circuit to stop the system
Using a valve with an incorrect pressure setting can lead to premature leaking or catastrophic tank failure
Fenwal 35-615955-997 Board 320788-702 this model features a factory-calibratedThe Fenwal 35 615955 997 is a 24 VAC microprocessor based Direct Spark Ignition (DSI) Control engineered for high reliability performance in gas fired heating equipment, including commercial boilers, furnaces, and water heaters. As an intermittent ignition control, this module replaces traditional pilot systems by generating a high voltage spark to initiate combustion only when the thermostat calls for heat. This specific Fenwal 35 61 series board
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