This diagram details a variable air volume box featuring a heating coil connected to heating hot water supply and return piping via a three-way control valve. The unit integrates a supply duct main connection with a flow sensor, damper actuator, and discharge temperature sensor. Space temperature and carbon dioxide sensors are indicated for demand-controlled ventilation coordination per the mechanical plans and schedules.
DA VA F T T CO2 HHWR HHWS FS TS TS SPACE CO2 SENSOR (SEE VAV BOX SCHEDULE AND PLANS FOR LOCATIONS AND DCV) CO2 SUPPLY DUCT MAIN H C SPACE TEMPERATURE SENSOR
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