[Equest-users] modeling automatic isolation dampers

[Dahlstrom, Aaron]

Anyone know how to shut off primary air flow to VAVS or PIU zones on a schedule?

I am modeling a high-rise building with a central AHU and floor-by-floor isolation dampers.

5 floors of the 40 operate at night, and their isolation dampers remain open 24/7.
The remainder of the floors have isolation dampers that are commanded shut at 6pm and opened at 6am.
(Heating is provided by separately controlled perimeter systems.)

The strategy I've been using is to schedule the zone MIN-FLOW-SCH to be 0 during the night and -999 during the day.
Then set an artificially aggressive setback / setup temp in the hopes that the tstats will close the VAV boxes automatically.

However, this isn't resulting in the airflow / kWh savings I was expecting...

THANKS!

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>




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