Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Whether the DX coil is hard-sized or autosized, the coil model can sometimes fail to find a valid SHR or bypass factor during sizing. This is due to inputs that cause the model to miss the air properties saturation curve when attempting to find the coil apparatus dew point (ADP) temperature. If the coil outlet air temperature and/or humidity ratio are adjusted such that the model can find a valid ADP, the warnings should disappear. This is an iterative process that can take several attempts before the warnings are eliminated.
A recent improvement was added to the interim release of the V8.4 debug version to overcome this shortfall.
