How do I select the AVD supply air dampers and thermostats?
Take the known CFM for each zone then go to table 1 and select the corresponding size. The AVD damper is usually the same size as the duct. Remember use one thermostat per zone – not per damper. Two dampers can be connected to the same channel for larger zones. 3. How should I size the RAD bypass damper? There are two methods to size the RAD bypass damper. • If there is less than six(6) zones the required capacity is determined by subtracting the capacity of the smallest AVD terminal from the HVAC unit’s design CFM. • If the system has six(6) or more zones an arbitary factor of .75 * unit CFM is used to determine bypass air requirements. • NOTE: Depending on the size of the system more than one(1) RAD bypass damper may be required. Starzone 3000 Accessories SC100- Single unit controller to integrate “non-zoned” HVAC units into the Starzone 3000 system. TOA- Outdoor air sensor to shut off heating at specific outdoor temperatures. Starcom95 (windows) Software and the Starcom HUB The star
