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it utilizes flame rectification to monitor combustion
Featuring a 2-way normally closed configuration
In colder ambient conditions
If heating elements stay on after the thermostat is satisfied or if elements fail to engage
and various hydronic heating loops
McDonnell & Miller 150S-M-MD Controller Els PW 17895 it utilizes flame rectification toThe McDonnell & Miller 150S M MD Controller (Part Number 172802) is a specialized combination low water cut off and pump controller designed for commercial and industrial steam boiler applications. This model is engineered with maximum differential operation, which is critical for preventing nuisance burner shutdowns in low pressure systems by allowing for a wider operating range between the pump on and pump off points. As a manual reset unit, it
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