This SPST (Single Pole Single Throw) switch is factory-calibrated to a set point of 1

eliminating the need for field modifications or wire splicing

Smith commercial water heaters requiring a 1

providing an airtight seal against the heat exchanger face to prevent flue gas leakage and ensure correct draft inducer motor performance

The service valve design allows for isolateable system access

Hydrolevel 45-353 Wire Harness L99H008 This SPST (Single Pole SingleThe Hydrolevel 45 353 Wire Harness is a critical field service component designed for the seamless integration of Safgard Model 1100 and 1100M Low Water Cut Off (LWCO) sensors. Engineered specifically for atmospheric boilers, this harness interfaces directly with the vent damper plug on Honeywell and United Technologies (UTC) integrated boiler control modules. It simplifies the boiler control wiring process by utilizing a "plug and play" architecture,