[Hap-users] LEED System type 5: Supply Air Temp Reset

[Reba Schaber]

On the plant configuration tab. LCHWT control.  This example uses outside air temp.  Also have the option of reset by load to maintain a constant return water temperature.

[cid:image002.png at 01CDBDDD.5889CB60]

From: hap-users-bounces at lists.onebuilding.org [mailto:hap-users-bounces at lists.onebuilding.org] On Behalf Of Orlinvelin Hotmail
Sent: Thursday, November 08, 2012 5:55 AM
To: Matthew Scott
Cc: <hap-users at lists.onebuilding.org>; nef mail
Subject: Re: [Hap-users] LEED System type 5: Supply Air Temp Reset

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 this!

Thanks,
Orlin

Sent from my iPad

On Nov 5, 2012, at 9:14 AM, "Matthew Scott" <MScott at nefisher.com<mailto: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 conditions.”

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<mailto:mscott at nefisher.com>
p: 610-369-3190
f: 610-369-3194

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