the valve should be closed at 2-11/16" above the cast line and full-open as the water level drops toward the 7/8" mark

Disconnect the sensor and measure resistance across the leads

This kit is specifically calibrated for the Series 20 TMV

also identified as the Lennox 78F9001

the inverted bucket design is inherently resistant to damage from freezing when properly installed with a thermal sleeve or in a vertical orientation that allows for natural drainage

ASCO 8044A2CSA Solenoid Valve 30067439-890 the valve should be closedThe ASCO 8044A2CSA is a high performance 2 way normally closed solenoid valve specifically engineered for critical fuel gas shut off applications. Featuring a robust aluminum body and high grade NBR seals, this valve ensures reliable operation within a 0 25 PSI pressure range. Designed with a 1 inch NPT connection and a high 22 Cv flow coefficient, it provides exceptional capacity for industrial combustion systems. This model operates on 120Vac and