making it suitable for both conditioned spaces and mechanical rooms

Key Benefits for the Technician Enhanced Thermal Rating: The Class F insulation system provides superior resistance to heat

serving as the certified SP12137 replacement

A single flash typically indicates a system lockout due to failed ignition attempts

Lochinvar & A.O. Smith 100158115 Pressure Switch 324846-701 making it suitable for bothMaintaining proper combustion and safety protocols in high efficiency water heating systems requires precision components like the Lochinvar & A. O. Smith 100158115 Pressure Switch. This genuine OEM replacement part is a normally closed (N. C.) air pressure switch factory calibrated to a 1. 42" WC (Water Column) set point. It serves as a blocked inlet air pressure switch, functioning as a critical safety limit that monitors the differential pressure