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If the heat sequencer fails to open the fan circuit
ensure you are using the correct orifice and regulator settings as specified in the Reznor technical manual for your specific gas type
Reliable Safety Integration: Directly interrupts the thermocouple circuit to shut down gas flow
ensuring exact climate regulation for L Series
the high temperature rating of the AG series allows for use on VS series valve bodies rated for up to 15 psig steam
Utica-Dunkirk 2272134 Pressure Switch 318423-701 If the heat sequencer failsThe Utica Dunkirk 2272134 Pressure Switch is an essential safety component engineered specifically for condensing gas boilers and high efficiency HVAC systems. Designed to monitor the differential pressure within the venting system, this 0. 5" WC (water column) switch ensures your unit maintains stable combustion air flow. It functions as a critical safety interlock, opening or closing the electrical circuit to prevent operation under dangerous