Reply To: Modeling Solar DHW in EnergyPro

Home Support Forum Lowrise Residential Code Questions Modeling Solar DHW in EnergyPro Reply To: Modeling Solar DHW in EnergyPro


Pat Splitt

The OG-100 calculation that seems to run in the current program is also defective.  If I model a simple 1 panel W/50 gal. tank system using the latest CEC F-Chart, I get an NSF of 0.72. The exact same system (with the same SRCC test file) on a house with the same floor area, modeled with the new compliance engine now amazingly has an NSF of 1.0! It has become 100% efficient! Now, if I re-run the program, but change the tank to 80 gal. the NSF is still 1.0. But, the compliance margin has gotten better. So, apparently, this system efficiency is now greater than 100%! This is complete B.S.

Pat Splitt