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For 240V needs
completing the circuit to the burner once the preheater has reached the required thermal set point
It is designed for Reznor UDAP and UDAS gas-fired unit heaters
CFM is determined by multiplying the sensor's K-factor by the square root of the differential pressure (measured in inches of water column) and the cross-sectional area of the duct
Universal Compatibility: Designed as a direct service replacement for Robertshaw
Conbraco 20-104-03 Valves Els PW 17895 For 240V needsThe Conbraco 20 104 03 is a professional grade rough bronze water gauge valve set engineered for reliable liquid level verification in commercial boiler and tank applications. This 1 2" MNPT liquid level gauge features a standard pattern design with high strength ASTM B584 bronze construction to ensure long term structural integrity under thermal stress. The set includes top and bottom valves equipped with Teflon stem packing and EPDM glass seals,
