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It serves as the direct replacement for Nordyne 668770 and 669937R
Smith venting structures
a spring-return model from the GMA or GCA series should be utilized
Utilizing HVAC furnace seals that meet exact factory tolerances ensures that York S1-010-06900-005 provides a leak-proof barrier
Siemens Building Technology GBB161.1U Actuator 322838-754 It serves as the directThe Siemens Building Technology GBB161. 1U Actuator is a heavy duty, direct coupled solution engineered for demand driven regulating in large scale HVAC systems. This modulating non spring return (NSR) actuator delivers a high 221 lb in (25 Nm) torque, making it suitable for managing supply air, return air, and face and bypass dampers in both VAV and CV installations. Operating on a 24VAC standard power supply, it responds to a precise 0 10VDC control