[Equest-users] Cooling Increase DCV and ERV Measures

[R B]

DCV - For min OA - make sure you have some non-zero value - I think that
triggers the economizer. If you are using the min OA schedule - make sure
it is either .001 or -999 for economizer to work. Let me know if helps.



On Thu, May 30, 2013 at 9:23 PM, Netty Nina <nnina at ers-inc.com> wrote:

>  Hi eQuesters, ****
>
> ** **
>
> The next two questions have been asked on here multiple times, but I have
> scourged the list and haven’t found a resolution. My building is a school
> in New England.****
>
> ** **
>
> I have a DCV measure that shows an increase in cooling. My thought is that
> DCV is taking precedence over the economizer. Is there a way to force
> eQuest to have economizer priority or is there another issue going on?****
>
> ** **
>
> The other issue is in the Heat Recovery. It also shows an increased
> cooling load for the building. I tried setting it on an ERV Schedule and
> limiting it to the heating season. I tried playing with the different
> controls. I know it’s not due to the increase in fan energy needed since
> the majority of units already have ERVs, but the efficiencies are better
> than code (and I also tried messing with the fan energy). Someone on the
> bldg-sim list even suggested controlling the ERV with Exhaust DT and
> increasing the delta-T to 20F. ****
>
> ** **
>
> I couldn’t get any suggestions to work.  How can I avoid overheating? Or
> is there another issue?****
>
> ** **
>
> Thanks in advance for any help you can give me.****
>
> ** **
>
> Sincerely, ****
>
> ** **
>
> Netty****
>
> ** **
>
> ** **
>
> *Netty Nina <nnina at ers-inc.com>, *LEED® AP BD+C****
>
> Project Engineer****
>
> ERS****
>
> 120 Water Street, Suite 350****
>
> North Andover, MA 01845****
>
> ** **
>
> Ph: 978-521-2550 ext. 224****
>
> Fax: 978-521-4588****
>
> nnina at ers-inc.com****
>
> www.ers-inc.com ****
>
> ** **
>
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