Installing this on a Natural Gas water heater will lead to improper combustion and hazardous operating conditions

a plenum-rated (CMP/CL2P) alternative should be used

By integrating a dedicated BACnet interface

Enhanced Safety Logic: Continuously monitors system sensors to prevent overheating and manages lockout procedures during flame failure

Streamlined Installation: Built-in junction box with red lead wires reduces labor time on the job site

Lennox 12W49 Pressure Switch 320734-701 Installing this on a NaturalThe Lennox 12W49 Pressure Switch (Model R20558702) is a critical OEM safety component engineered for precise combustion air monitoring in Lennox gas furnaces. This SPST pressure switch is factory calibrated to actuate at 1. 35" W. C., ensuring the inducer motor generates sufficient draft for safe venting before the ignition sequence begins. Designed for professional grade reliability, it features a standardized 1 4" barb connection for secure