ApplicationsDamper Control in Building AutomationSystems Air Handlers VAV Boxes
VAV BoxesA VAV (variable air volume)box controls the air additionto a room or zone dependingon temperatureA damper inside the VAVbox controls the airflowA damper actuatormodulates the damperaccording to temperature
VAV Box with ReheatApplication with anactuator controllingthe damper andgiving positionfeedback
VAV Box In a BAS SystemNegativePressure Room Has VAV Box on air inlet
Bypass Dampers A Bypass Damper isa pressure relief valveplaced between thesupply and returnducts of the forcedair duct work.
Bypass DampersAs Zone dampers start closing,the bypass damper will openand divert some of the supplyair to the return.This prevents a pressurebuildup in the supply ductwhich can cause fan cavitation,excessive air velocities, andexcessive zone damper blow-by
Air HandlersThe air handler decides how much air to reuse,bring in new, and exhaust in a buildingDampers control the airflow through the airhandler Return Air from the building Outside Air from outside the building Exhaust Air from the building and exhausted to outside
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