Lochinvar & A.O. Smith 100277772 Pressure Switch 323055-751 This allows the P72MA-1 to

This allows the P72MA-1 to break both lines of a 208/240V circuit or control separate auxiliary components simultaneously

Double Throw) switch

With a 15-second pre-purge and a 7-second ignition period

making it suitable for both hot water and low-pressure steam systems

Lochinvar & A.O. Smith 100277772 Pressure Switch 323055-751 This allows the P72MA-1 toThe Lochinvar & A. O. Smith 100277772 Pressure Switch is a critical safety component engineered for high altitude applications in Crest FBN and FBL heating boilers. This F9 high altitude air pressure switch is factory calibrated with a 4. 1 in WC set point to monitor combustion chamber pressure accurately in thinned atmospheres. It serves as a proving switch, ensuring the combustion air blower provides sufficient flow for a clean, safe burn before the