While the 20162903 replaces a faulty limit control

While the connector is designed for 5/32" O

If you have no hot water at all or only a very small amount of lukewarm water

the Lennox 79J89 is the successor and direct replacement for part numbers 79J8901 and LB-109531B

Ranco O10-2054 Control Els PW 17895 While the 20162903 replaces aThe Ranco O10 2054 High Pressure Control is a rugged, single function pressure switch designed for fan cycling control and head pressure management in commercial refrigeration and air conditioning systems. This veteran preferred SPST open on low (close on high) controller features a broad adjustable pressure range of 100 to 400 PSI, making it compatible with high pressure refrigerants like R 22, R 134A, and R 502. Engineered with a heavy duty plated