[Equest-users] Simultaneous heating and cooling

[Grando, John]

Kyle,

In the cooling tab there is an availability schedule that you can make.  It is type ON/OFF/TEMP so you just need to create a schedule that reflects the parameters you might want.  Below is the DOE2 item help for that particular keyword.  Attached is a screen print of the tab.  I believe it is the same thing for the heating availability schedule as well.

COOLING-SCHEDULE

Takes the U-name of a SCHEDULE of TYPE = ON/OFF/TEMP that specifies when cooling is available from the system. If not entered, the program will assume that cooling is always available when needed. A zero value for this schedule means that cooling is not available except possibly by outside air via the economizer. A non-zero value indicates that cooling is available. The program interprets a value greater than 1.0 to be the outside temperature below which cooling is unavailable. The program assumes the heating coils are off whenever the air-handling fans are off.

John Grando LEED AP| Mechanical Engineer
Phone: 212-615-3705 | Fax: 212-615-3700
jgrando at cosentini.com

Cosentini Associates - A Tetra Tech Company
Two Pennsylvania Plaza - Third Floor - New York, NY 10121
www.cosentini.com<http://www.cosentini.com/>





________________________________
From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nisonger, Kyle M NWK
Sent: Monday, August 24, 2009 2:38 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Simultaneous heating and cooling


Equesters,

I have a multizone system that is doing simultaneous heating and cooling year round.  I have two questions pertaining to this problem.

1) Any suggestions on how to prevent the simultaneous heating and cooling?

2)  One thing I would like to try is to schedule the heating to only be available above a 65 degree F outside air temp and the cooling only available below a 45 degree F outside air temp.  Is it possible to do this in equest?

Thank you for your help,

Kyle Nisonger
Mechanical Engineer, LEED(r) AP
US Army Corps of Engineers
Kansas City District
(816) 389-3224


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