You may consider using a different return for the solar panels. I believe the gas heater will be in-line, but my solar panels are Tee-d off the main return so they get their own flow. To prevent leaks you may well have to restrict the flow to the panels (I do--I can NEVER run wide-flat-out our my panels with burst). I have a separate return for my panels. If I were you, I would tee the solar panels off BEFORE the heater, so you never get hot water going into the panels--otherwise you won't get efficiency from either the heater OR the panels.
Bookmarks