[Bldg-sim] Supply temperature reset in ASHRAE baseline

[Mitchell Dec]

Ying,

If you have a heating coil in the air handler one needs to inputm the HOT DECK MAX LEAVING TEMP (HEAT SET-T)- and this enable the Heat Control input. The HOT DECK MAX LEAVING TEMP (HEAT SET-T) should be set to the primary air temperature leaving the air handler. If the HEAT SET-T air temperature is not specified, the primary air temperature will be the mixed air temperature, which could result in a significant increase in reheat energy depending on the climate. 
Hope this helps,
Mitch


Mitchell J. Dec
Senior Energy Analyst
LEED® Accredited Professional

320 SW Washington, Suite 200
Portland, OR 97204-2640
T.  503.227.5280  F. 503.274.7674
Direct: 503.345.6283

Thinking. Inside the building.
http://www.glumac.com/



-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[ mailto:bldg-sim-bounces at lists.onebuilding.org]On Behalf Of
yizhao1 at vt.edu
Sent: Thursday, February 28, 2008 5:00 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Supply temperature reset in ASHRAE baseline


Hi -
In the baseline, ASHRAE requires a supply air temperature reset for system 5,
packaged rooftop VAV w/ reheat (G3.1.3.12). In the air side system level, I can
set up a schedule for cool control, but heat control is in grey.
Does anyone know how to input the reset in the system? Economizer is inlcuded.

Thanks!

Ying

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