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Soft-blob field with ribbon-tape seals — cool ice-lab sheet for description and returns.
Automatic Reset Logic: Features a 20°F differential for reliable HVAC system reset without manual intervention
Industrial Durability: Forged brass construction paired with NBR seating for long-term resilient service
While this is the OEM blower assembly
it operates with significantly lower power consumption than standard PSC alternatives
it requires a start capacitor to effectively kick over under load
Siemens Building Technology GCA221.1U Actuator 320819-301 Automatic Reset Logic: Features aThe Siemens GCA221. 1U is a high torque spring return rotary actuator engineered for reliable control of building automation dampers and valves. Operating on 120 VAC, this Open Closed (on off) actuator delivers 142 lb in (16 Nm) of torque, making it a standard choice for large air handlers and systems requiring fail safe positioning. Designed for mechanical spring return during power loss, it ensures the controlled component returns to its safety
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