HVAC Equipment Supplement. AIR-HANDLING UNIT (AHU) AHU DAMPERS COORDINATED FOR AIR- SIDE ECONOMIZER OPERATION.

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Presentation transcript:

HVAC Equipment Supplement

AIR-HANDLING UNIT (AHU) AHU DAMPERS COORDINATED FOR AIR- SIDE ECONOMIZER OPERATION

Earlier Generation of HVAC – AHU DUAL DUCT DISTRIBUTION MULTI-ZONE DISTRIBUTION HOT/COLD DECK AHU

Types of VAV Box “VAV boxes are not all created equal” VAV Box, Un-powered – Direct damper control of air to zone (“2- way valve”) – Diverting damper (to return duct or plenum) (“3-way valve”) Fan-Powered Box – Series: fan runs continuously, with damper controlling mix of SA and re- circulated room air – Parallel: fan runs re-circulate room (or plenum) air as damper throttles SA, maintaining constant volume to diffusers.