DHW Thermasiphon vs active
I recently installed a water heating element in my englander 3500 wood burner. Because the 80 gal storage tank and the wood burner are both in the basement and about 12 ft apart I opted to go with an active circulation system. Nothing fancy just a Grundfos pump with an aquastat. The w shaped Heating element is mounted horizontally in the firebox and the 1/2 copper plumbing runs across the ceiling between the tank and heater. To my surprise this system thermalsiphons pretty effectively. My question is how will this effect the performance. the output pipe seems to be hotter with the start stop action of the active system before it inevitably starts siphoning. If I override the aquastat to cycle the pump it temporarily goes back to cycling. I’ve just put this system into service this week but so far it has supplied enough hot water for our family of five. I am also looking to put a solar collector on the roof this spring to supply hot water during the months we do not run the wood burner. I am still getting accustomed to this system so any insight from experienced users would be appreciated.
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