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at which point it breaks the circuit to shut down heating
Streamlined Installation: The NEMA 1 enclosure includes a 1/2" NPT nipple
eliminating the need for additional external air flow restriction components
This genuine Lennox part is supplied as a complete assembly
McDonnell & Miller 7-BM Switch THPU32HP7Y at which point it breaksThe McDonnell & Miller 7 BM Switch (Part Number 110900) is a heavy duty, potentiometer proportional low water cut off switch specifically built for Series 93, 193, 94, and 194 pump controllers. Designed for boiler systems requiring modulated feedwater control, this manual reset switch utilizes a 0 135 ohm slide wire resistor to provide a continuous signal to a proportional domestic or industrial modulating water valve. The single pole double break