Always verify your furnace's wiring diagram and model configuration before installation

8 Cv rating and linear bypass/mixing capability allow for accurate proportional control

Contractors should inspect the existing fasteners and internal cabinet insulation

and UDAS125 model unit heaters

Key Benefits Precise timing: Microprocessor logic manages 30-second TFI and ignition sequences without the drift associated with analog controls

Siemens Building Technology GRD221.1U Actuator 326010-701 Always verify your furnace's wiringThe Siemens Building Technology GRD221. 1U Actuator is a specialized 120V fire and smoke damper actuator designed for critical life safety HVACR applications. As a veteran grade two position spring return actuator, it delivers 30 lb in of torque, ensuring reliable open close operation for smoke control and combination fire smoke dampers. Built to exceed the rigors of UL555 and UL555S standards, this unit provides a nominal 30 second drive time and a