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and T51000 mechanical dials
you can typically upgrade from a 30VA to a 40VA transformer as it provides more available "work" capacity for the 24V circuit
Why is my heater requiring a manual reset on the vent switch
While temporary bypassing can aid in rapid diagnostics
Lochinvar & A.O. Smith 100208387 Pressure Switch and T51000 mechanical dialsThe Lochinvar & A. O. Smith 100208387 Pressure Switch is a critical safety component calibrated to a 1. 15" WC setpoint for commercial and residential water heating systems. This SPST (Single Pole Single Throw) air pressure switch is designed to monitor vent pressure and ensure the inducer motor is moving sufficient combustion air before allowing the ignition sequence to proceed. As a direct replacement for the Lochinvar PRS20031 and 100166126, this
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