[Equest-users] water loop heat pump

Shawn Burstyn srb at kibart.com
Fri Dec 11 07:37:48 PST 2009


I am working on a project and trying to change the HVAC system in the
parametric run from a packaged unit with DX cooling and furnace heat to
a water loop heat pump system.  I inserted the WLHP loop in the detail
edit, but when I ran the simulation the baseline would not run and I got
an error message of "zero design flow".  I then changed the loop sizing
method to primary and inserted sizes for the cooling tower and boiler
based on a response I saw in the archive folder.  The problem I then had
is that energy use in the summary amount was way too high to make sense.
Does anyone have any suggestion of how to make this work.

 

Also when I ran the system I got a warning message of "OA-CONTROL has
been reset to FIXED to allow the fan CYCLING option".  Does anyone know
why when it changes to the WLHP it decides to change the OA-Control to
FIXED without me changing it in the parametric run.

 

Shawn R. Burstyn
Mechanical Design Engineer 

Kibart, Inc.
Consulting Engineers
901 Dulaney Valley Rd, Suite 301
Towson, MD  21204
410.494.1111 (Phone) 
410.494.1112 (Fax)
www.kibart.com <http://www.kibart.com/>  

 

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