Tjernlund Products UC1 Interlock Controller 321142-301 With a robust 1

With a robust 1

reducing pressure loss

With a high flow coefficient of 4

For low-pressure safety cutout applications

Tjernlund Products UC1 Interlock Controller 321142-301 With a robust 1The 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.