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always confirm medium compatibility with the manufacturer's technical data
or if the DC resistance is significantly different from 7
This part is a direct replacement for Lennox 89M77
ensuring the internal media does not degrade over the service interval
High Pressure Rating: Rated for 650 PSI
McDonnell & Miller RB-24E-L Control Els PW 17895 always confirm medium compatibility withThe McDonnell & Miller RB 24E L (Part Number 144690) is a specialized residential low water cut off designed for 24V hot water boiler systems. This electronic LWCO utilizes a 3 4" NPT probe style sensing element to monitor for hazardous low water conditions, ensuring the burner circuit is interrupted before equipment damage occurs. Unlike manual reset models, this unit features an auto reset function that restores operation once the water level
