A yellow flame often indicates an incorrect orifice size

The unit is housed in a NEMA 1 rated plenum enclosure and includes an external LED indicator to provide real-time status of the relay coil activation

standardized mounting solution for large-scale air handlers

Efficient Termination: Box lugs and quick-connect terminals allow for fast field wiring and secure HVAC electrical component integration

What causes a Copeland protector to trip frequently

Tjernlund Products UC1 Interlock Controller 340793-762 A yellow flame often indicatesThe Tjernlund UC1 Universal Interlock Control is an essential component for technicians managing draft inducer and power venter installations. This interlock controller acts as the central logic board, coordinating the sequence of operation between the HVAC appliance and the venting system. Designed for 24VAC, 115VAC, or dry contact call for heat signals, the UC1 features a pre purge and post purge cycle to ensure proper combustion gas evacuation.