[Equest-users] No Heating from PVVT Heat Pump

[Eddie Corwin]

So I determined why I was not getting any heating, and the resolutions perplexes 
me.

 I am modeling an Air-to-Air heat pump, so in the air-side system --> Basics tab 
I selected "NO" for the field "WL/GS Ht Pump".  In doing so, I get no heating 
out of the system.  When I change the field to "YES"  I now get heating. 
 Attached are two images showing the field i am referring to, and 
showing that I have an air-cooled condenser.  Does anyone know why this might be 
happening.  I am worried that eQuest is treating my HP like a ground or 
water source HP instead of an air-to-air system.  Any thoughts on the matter 
would be appreciated.  By the way, I am using eQuest 3.64

-Eddie





________________________________
From: Eddie Corwin <ecorwin at altanova-energy.com>
To: equest-users at lists.onebuilding.org
Sent: Tue, September 28, 2010 5:17:21 PM
Subject: [Equest-users] No Heating from PVVT Heat Pump


I am trying to model a PVVT system, that uses an air-cooled heat pump for 
heating and cooling.  For some reason, the system refuses to supply any heating. 
 When I change the condenser type from air-cooled to water-cooled, the system 
WILL provide heat.  Has anyone experienced problems like this, or has 
someone successful modeled a PVVT air-cooled heat pump?  I have attached my IDF 
and PD2 file for review.  
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