[Bldg-sim] economiser for climate zone 1

[Chris Yates]

Great. A minor conundrum remains, quoting:

*"Curiously, in my copy (90.1 2007) economisers are not required for
1b (table G3.1.2.6A).
However, the following table (G3.1.2.6B) denotes that economiser high limit
shutoff should be 75degF for 1b."*
*
*
Chris

On Thu, Jun 13, 2013 at 12:09 PM, Jim Dirkes <
jim at buildingperformanceteam.com> wrote:

> Correct.****
>
> ** **
>
> *James V Dirkes II, PE, BEMP, LEED AP**
> **www.buildingperformanceteam.com*<http://www.buildingperformanceteam.com/>
> *
> **Energy Analysis, Commissioning & Training Services**
> *1631 Acacia Drive, Grand Rapids, MI 49504 USA
> 616 450 8653****
>
> ** **
>
> *From:* Chris Yates [mailto:chris.malcolm.yates at gmail.com]
> *Sent:* Thursday, June 13, 2013 7:08 AM
> *To:* Jim Dirkes
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] economiser for climate zone 1****
>
> ** **
>
> Thanks Jim,****
>
> ** **
>
> So your understanding is that a mixing box still exists, but the control
> that varies outdoor air rate doesn't exist. It is in effect a fixed outdoor
> air rate.****
>
> ** **
>
> ??****
>
> ** **
>
> Many thanks****
>
> ** **
>
> Chris****
>
> On Thu, Jun 13, 2013 at 11:48 AM, Jim Dirkes <
> jim at buildingperformanceteam.com> wrote:****
>
> Chris,****
>
> More warm weather  = less available cooling from outdoor air = less
> justification for spending money to install economizer controls.****
>
> p.s., You must provide minimum outdoor air for ventilation, but need not
> also cool with outdoor air****
>
>  ****
>
> *James V Dirkes II, PE, BEMP, LEED AP**
> **www.buildingperformanceteam.com*<http://www.buildingperformanceteam.com/>
> *
> **Energy Analysis, Commissioning & Training Services**
> *1631 Acacia Drive, Grand Rapids, MI 49504 USA
> 616 450 8653****
>
>  ****
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Chris Yates
> *Sent:* Thursday, June 13, 2013 6:36 AM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] economiser for climate zone 1****
>
>  ****
>
> Is it just me, or is does it seem terrifically wasteful that a climate 1
> building doesn't require an economiser? Or am I missing something?****
>
>  ****
>
> KR / Chris****
>
> ** **
>
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