EnergyPro includes a drop down menu in the solar section of the domestic water heating tab. The manufacturer/product choices in the menu all appear to be of the “built up system” variety, meaning they consist of a separate collector(s) and storage tank with pumped circulation system between the two. There seem to be no listings for integrated collector and storage (ICS) systems such as the SunEarth Copperheart or the TCT ProgressivTube products. These units, as well as similar products, are certified under the SRCC OG-300 program with performance numbers that can be used to calculate annual Solar Savings Fractions. They have also been around for many years and have stood the test of time.
Is there a way to edit the listings in EP to include other legitimate OG-300 certified systems? If not, what limits the listings to only those in the current dropdown menu?
ICS solar DHW is a great way to insure compliance for many projects, particularly those pesky little garage conversion ADU’s. I have seen projects go from a negative 20% compliance margin to a positive 15% (or more) margin with the addition of an ICS with only a 50% Solar Savings Fraction. This solves a lot of problems.
Stay Well & Think Good Thoughts,
David Inger PE, LEED AP, CEM, Certified Gadfly
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