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preventing dangerous "runaway" heating conditions
Is the 998-2661-51 compatible with R-404A and R-22 systems
regulating ignition sequences
The larger expansion outlet reduces backpressure during discharge
Siemens Building Technology GMA166.1U Actuator 320788-704 preventing dangerous "runaway" heating conditionsThe Siemens GMA166. 1U is a high performance OpenAir GMA Series electronic actuator designed for the rigorous demands of commercial HVAC systems. This spring return actuator provides a reliable 62 lb in torque (7 Nm) capacity, making it the standard choice for controlling return air, mixed air, and exhaust dampers in both VAV systems and constant volume installations. Operating on a 24V AC DC power supply, it utilizes a 0 10 VDC modulating control
