Storage with a non gasser

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cheapsx

Member
Apr 29, 2010
54
adirondacks
I am getting ready to set up the 500 gallons of pressurized storage for my old smokey indoor non gasser. I am plumbed up using the simple pressurized storage set. Here's the thing, the wood boiler circulator is going to want to move water at a low of lets say 160*. When you get your tank up to a high of lets say 180ish and the fire has not totally gone out, the way I see it is the circulator on the boiler will keep moving water till it sees 160* and that will keep going because there is 180* water in the tank. This will be wasting stored btu's due to heat losses in the pipes an boiler, especially if this is in the warmer parts of the season and there is no heat load. Has anyone come up with a good way to stop the boiler from stealing the heat in the tank while allowing the fire to die out? I have my own idea but I am looking at more aquastats, relays, pumps ect. Just wondering if anyone has a simple method for preventing this.
 
Really depends on your set-up. I cheat a bit. I set my aquastat on tank pump at 160* when starting the fire. When ever I reload, I turn up the aquastat so the stat is about 20* higher then tank temp. This aquastat is installed on supply piping from boiler. For instance if I am putting my last load of wood(for the night) in the boiler and my tank is at 180*, I set the aquastat to 200*. This works well but not an option if you are a set and forget it type. Also, you would need a dedicated pump to tank. If you have any type control system you can program it based on boiler supply and tank temp differentials. There are many ways to skin this cat and this is just the way I do mine. I use 20* temp difference as a base line to explain my process. When you get to know what your boiler can do, you can narrow that gap so the tank will charge faster. There are ways to set it and forget it with relays but it gets more complicated. Would need a complete layout of your boiler/tank piping.

Good luck
 
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