[TRNSYS-users] Heating and Cooling season scheduler

[thornton at tess-inc.com]

> I am facing a problem in switching from heating to cooling in Ground
> source heat pump system and after connecting type 14 to  Water-Water
> Heat pump , where the simulation goes through the heating season
> normally, but at the beginning of the cooling season, there is a
> warning at the beginning of operation, that is, every 24 hours until
> the matter ends with giving an error to increase the number of
> warnings.

Unless the heat pump is running continuously in the heating season in 
heating mode, and continuously in cooling model in the cooling season, 
there's no reason to directly connect the Type 14 to the heat pump.  The 
heat pump heating and cooling control signals typically come from a 
thermostat, aquastat, or other controller - or from an equation with 
inputs from a seasonal forcing function and a controller.  I would 
suggest that you plot the output of the Type 14 forcing function for a 
year to make sure it's doing as intended and then switch to a controller 
based on/off decision.  But without seeing what the warnings are, it's 
impossible to diagnose what may be causing the problems you are seeing.

Jeff

-- 
Jeff W. Thornton
President
Thermal Energy System Specialists LLC
3 N. Pinckney Street, Suite 202
Madison WI 53703 USA
(608) 274-2577
www.tess-inc.com