Tjernlund UC1 Universal Safety Interlock Control for Sidewall Power Venters, Draft Inducers & Combustion Air Fans - HVAC System Safety Device for Home & Commercial Use

The UC1 is the new standard interlock control for Tjernlund' s full line of Fixed Speed Power Venter's, Draft Inducers and Combustion Air In-Forcers. It can be interlocked with virtually any burner control circuit.  Features include: adjustable pre & post purge, LED status / diagnostic indicators, 10 second prover switch delay to avoid burner start up and wind induced short cycling.  Interlocks with any 24-120 VAC burner control circuit and also includes “dry” contact actuation option. Selectable voltage eliminates false activation by burner control circuits.  After each burner cycle the UC1 will continue to operate in post-purge mode to allow the venter to purge the heater and vent of residual flue gases.  A factory post-purge time is set at 2 minutes and is adjustable up to 16 minutes.  .

Pair with Tjernlund Draft Inducers and PS1505 for Complete Interlock

Can be interlocked with virtually any burner control circuit

Compatible with MAC1E or MAC4E Multiple Appliance Controls

Country of origin United States