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[DOCX File]SECTION 23 81 00 - DECENTRALIZED UNITARY HVAC …
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Damper assembly with exhaust damper and spring-return, and low-voltage, modulating damper motor with minimum position adjustment. 2.Water-Side Economizer: Mechanically cleanable, aluminum-fin, copper-tube coil assembly, // two // four // rows deep, allowing precooling of inlet air using condenser water; with piping and bypass control valves.
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SECTION 230111.11 - OPERATION OF HVAC SYSTEMS
If return air temperature is lower, drive outside damper to minimum, close relief damper, and open return damper. For outside air temperatures above 79 degrees F (26 degrees C), drive outside damper to minimum, close relief damper, and open return damper. For heating, drive outside damper to minimum, close relief damper, and open return damper.
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[DOCX File]eHVAC: Wireless Modular Multi-Zone HVAC Controller
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If only zone one is requesting heat, then the other zone dampers would close and only zone one’s damper would stay open, the MCU will turn the heat pump on and supply the zone heated air. Once the zone reaches the requested temperature, the system will turn off the heat pump and the actuator will return the damper to its’ “off” position.
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[DOC File]Automatic Temperature Control Specification
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An independent 24-volt transformer sized at 5 VA per zone damper shall power the GEN V System Controller and all dampers in the system. The bypass dampers shall be served by an independent 40 VA / 24-volt transformer. The load side of the blower motor starter shall power this transformer. All power wiring of this system shall be 24-volt AC.
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[DOC File]Automatic Temperature Control Specification
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An independent 24VAC/100VA transformer sized at 5 VA per zone damper & thermostat or D-Fuser shall power the GEN II System Controller and all dampers in the system. The bypass dampers shall be served by a 40 VA / 24-volt transformer. The load side of the blower motor starter shall power this transformer.
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Hvac zone damper motor