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a separate 3-1/8 inch gauge boot should be added
The larger dial size provides better visibility and higher resolution for the 0-100 PSI scale
The 1F56N-444 is a robust horizontal thermostat replacement for many legacy mercury models
Common Questions: What is the tonnage rating for the C-165-S
Lennox 79J07 Pressure Switch Els PW 17895 a separate 3-1/8 inch gaugeVerify high side and low side performance with the Lennox 79J07 Pressure Switch, a critical OEM replacement part designed for precision low ambient control in R22 and modern refrigeration and air conditioning systems. Engineered for heavy duty commercial HVAC maintenance and residential applications, this 79J0701 compatible switch ensures your compressor remains protected during low temperature operations. With a fixed setpoint that opens at 150 PSI