Siemens Building Technology GJD221.1U Actuator 321894-709 preventing thermal damage to the

preventing thermal damage to the heat exchanger door and surrounding combustion components

What if my connector doesn't match

this is a sealed unit designed for maximum leak prevention

Common Questions What are the signs that my Trane ignitor control is failing

The Macon Controls N10857 is a heavy-duty

Siemens Building Technology GJD221.1U Actuator 321894-709 preventing thermal damage to theThe Siemens GJD221. 1U is a high performance fire smoke damper actuator designed for critical life safety applications. Engineered for 120V systems, this OpenAir model delivers 20 lb in torque to ensure reliable operation of UL listed smoke control and combination fire smoke dampers. As a veteran grade spring return actuator, it features a 2 position (on off) control signal with a rapid 30 second driving time and a 15 second fail safe spring return.