leading to "false-no-flame" lockouts

this specific kit is precision-engineered only for the 1/2" 38-200 series

Robust Construction: Designed to withstand high-ambient temperatures near the combustion collector box

If the sensor remains open during heavy frost

Common Questions: What is the difference between 3/4" OD and 5/8" nominal for this fitting

Johnson Controls T-4000-2140 Plastic Cover leading to "false-no-flame" lockoutsThe Johnson Controls T 4000 2140 is a high durability beige plastic cover engineered specifically for horizontal mounted thermostats within the T 4000 series pneumatic control family. This rugged thermostat cover provides essential protection for bimetal sensing elements while maintaining a professional aesthetic with the integrated Johnson Controls logo. Designed for utility and precision, the faceplate features a high visibility F C thermometer for