[Equest-users] Water-Side Economizers

[Pasha Korber-Gonzalez]

Jeff,

if you have chilled water coils through your unit MZ unit and the chilled
water is coming from a chiller, then the water size economizing function
comes from the cooling tower that is connected to the chiller which supplies
the chilled water coils.  If you are talking about economizer --in general
terms, then maybe you are trying to air-economize which should be able to be
input in the air-side tab-cooling  for your MZ AHU.

Look at the plant & cooling tower for your water econo inputs.

Pasha

On Thu, Apr 15, 2010 at 1:40 PM, Jeff Ross-Bain <
jross-bain at rbgreenbuilding.com> wrote:

>  Hi All,
>
>
>
> I have an existing building with a multi-zone air handling system with
> chilled water and hot water coils. The system consists of the air handling
> units, a centrifugal chiller, cooling tower, and gas fired boiler. I am
> trying to introduce a water-side economizer into the system. In the detailed
> mode, I notice that a water-side economizer is not allowed with a multi-zone
> system. The spreadsheet input simply has an inaccessible “n/a” shown for the
> economizer and does not allow access.
>
>
>
> Am I missing something?
>
>
>
> Thanks for your help.
>
>
>
> *Jeffrey G Ross-Bain, PE, LEED, BEMP*
>
> Ross-Bain Green Building, LLC
>
> 404-228-2893
>
>
>
> P Build Green...Save Time
>
>
>
>
>
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