Johnson Controls T-4000-630 Conversion Kit Els PW 17895 the switch opens the circuit

the switch opens the circuit

Common signs include the furnace blower running continuously without heat or the burners shutting off prematurely before the thermostat setpoint is reached

this component features a 1/2" ODF sweat inlet and a 5/8" ODF sweat outlet

The valve body and internal plunger assembly are sold separately

Internal Vent Limiting: Features an integral vent limiter to ensure safe operation without secondary piping

Johnson Controls T-4000-630 Conversion Kit Els PW 17895 the switch opens the circuitThe Johnson Controls T 4000 630 Conversion Kit is a field proven solution for transitioning existing field installed pneumatic thermostats to the T 4000 series. This white pneumatic universal conversion kit is designed for technical specialists who need to modernize legacy HVAC controls without a full system overhaul. It facilitates the replacement of dual temperature or single temperature controls, ensuring stable pneumatic signal accuracy and