Johnson Controls T-4000-630 Conversion Kit Els PW 17895 If the furnace high limit

If the furnace high limit switch is opening due to a mechanical failure of the bimetal strip

eliminating the balance issues often found in generic equivalents

it is commonly utilized to stage blower motor operation alongside electric heat strips in residential and light commercial air handlers

5-ton outdoor units requiring a specific 24V control signal

Johnson Controls T-4000-630 Conversion Kit Els PW 17895 If the furnace high limitThe 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