It will automatically close the circuit once the furnace temperature drops below 110

The 1/4 inch pneumatic tubing features a 0

Where is the optimal location to install this sight glass

Engineered for high-duty cycle applications

Lennox 63K93 Pressure Switch Els PW 17895 It will automatically close theThe Lennox 63K93 Pressure Switch is a critical OEM safety component engineered for precise furnace pressure switch troubleshooting and replacement in high efficiency Lennox heating systems. This single pole single throw (SPST) switch is factory calibrated for an activation pressure of 0. 20" WC, ensuring the inducer motor maintains proper static pressure before the ignition sequence initiates. Featuring a dual 1 4" barb connection, it provides a