ERV used as make-up air

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Hello all,

Is there anyone who can give me some pointers on how to model this?
Basically, I am trying to model a standalone store, with the retail area
being served by three unitary RTU's. I have divided the retail area
into three thermal zones (for each RTU). However, a separate ERV is
supplying OA to the entire retail area @ 900cfm continuously during
store hours. The RTUs has CO2 sensors such that it will bring in
additional fresh air if demand is greater than the ERV supply. How
should I model this?

Regards,

Victor Yeung, BASc, LEED AP

Victor Yeung's picture
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Joined: 2011-09-30
Reputation: 0

I would just model each RTU with their own ERV of the equivalent
effectivenss as the combined unit and proportion the ERV fan energy
between the 3 systems.

You can then apply the DCV control strategy (which is not available if you
try the OA-FROM-SYSTEM path).

bfountain's picture
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Joined: 2011-09-30
Reputation: 201