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this differential pressure switch ensures the inducer motor is moving sufficient air to support safe ignition and operation
the FS4-33 switch provides reliable mechanical switching with 7
ensuring it handles the unique inrush current requirements of different HVACR equipment
The secondary output provides a steady 24 VAC at 96VA nominal
Robertshaw 780-502 DSI Module Els PW 29614 this differential pressure switch ensuresThe Robertshaw 780 502 is a Universal Direct Spark Ignition (DSI) control module designed for single rod or dual rod sensing applications in natural and LP gas systems. This gas ignition control operates on 24V AC and provides a 4 second Trial For Ignition (TFI) with a single try lockout sequence. As a versatile non prepurge ignition module, it replaces hundreds of legacy Robertshaw and competitive models, including the DS845 and SP715 series. The