[Hap-users] LEED System type 5: Supply Air Temp Reset (Orlinvelin Hotmail)

Aaron Smith asmith at mreng.ca
Mon Nov 12 07:30:28 PST 2012


When you are describing the Chilled Water Plant in the "configuration" tab
you can reset the Leaving Chilled Water Temperature (LCHWT) by outdoor air
temperature schedule or by Load (Constant RWT).  Refer to the attached
screen shot.  I believe 90.1 allows either.

Aaron Smith, P.Eng 
M&R Engineering 


Message: 1
Date: Thu, 8 Nov 2012 06:54:47 -0600
From: Orlinvelin Hotmail <orlinvelin at hotmail.com>
To: Matthew Scott <MScott at nefisher.com>
Cc: "<hap-users at lists.onebuilding.org>"
	<hap-users at lists.onebuilding.org>,	nef mail
<nefmail at nefisher.com>
Subject: Re: [Hap-users] LEED System type 5: Supply Air Temp Reset
Message-ID: <BLU0-SMTP1875E86F8B7AB0B18FC107FC1690 at phx.gbl>
Content-Type: text/plain; charset="utf-8"

I have similar question on how do you simulate chilled water reset which is
required for the baseline model? Actually I have a comment from USGBC on


Sent from my iPad

On Nov 5, 2012, at 9:14 AM, "Matthew Scott" <MScott at nefisher.com> wrote:

> For LEED baseline system type 5, the Supply Air Temperature for cooling
?shall be reset higher by 5 degrees F under the minimum cooling load
> I take this to mean under Capacity Control, I should select ?Temp Reset by
Greatest Zone Demand? and set the Max Supply Temperature to 60 degrees since
I have the Supply Temp set to 55 degrees. Reading the Help description on
this setting makes me think otherwise, but there doesn?t appear to be a
better option.
> I?ve attached a screen shot of the cooling settings:
> <image001.png>
> Perhaps the tech team could post a guide on how to properly execute all of
the LEED / Appendix G requirements for each system type in HAP.
> Thanks for your help!
> Matt Scott
> N.E. Fisher & Associates, Inc.
> 329 East Second St, 2nd Flr
> Boyertown, PA 19512
> e: mscott at nefisher.com
> p: 610-369-3190
> f: 610-369-3194
> _______________________________________________
> Hap-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/hap-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
-------------- next part --------------
An HTML attachment was scrubbed...


Hap-users mailing list
Hap-users at lists.onebuilding.org

End of Hap-users Digest, Vol 35, Issue 6
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HAP LCHWT Reset.jpg
Type: image/jpeg
Size: 128328 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/hap-users-onebuilding.org/attachments/20121112/56a005f0/attachment.jpg>

More information about the Hap-users mailing list