but operating above the rated 12 bar measurement range will result in an "out of range" signal clip at 20 mA and may lead to calibration shift if the overpressure limit is exceeded

or infrared burners

Experienced contractors know that reliability in the field depends on using exact-spec components

and HD series heaters

Lochinvar & A.O. Smith 100163255 Kit R-410A but operating above the ratedThe Lochinvar & A. O. Smith 100163255 Air Inlet Kit is a critical OEM component designed to provide regulated, clean combustion air to high efficiency residential and commercial heating systems. Engineered specifically for compatibility with Lochinvar Knight and A. O. Smith boiler and water heater models, including the KB 500 and AW 501 series, this kit ensures the burner receives the precise oxygen volume required for optimal stoichiometric