What do most people do with the loop going to the house from storage? It's either run 24/7 or on a call for heat? And if it's not 24/7 then how can you heat DHW?
Gasser burners with storage and boiler in outbuilding
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maple1
Minister of Fire
You can heat DHW with a heat call, same as the other heating zones call for heat. But I don't have storage outside so not sure how they're doing it.
NateB
Feeling the Heat
Is your storage pressurized? If so you need a side arm which would be kept up to temp by a circulator and a control.
maple1
Minister of Fire
jebatty
Minister of Fire
Deep Portage has this arrangement with its Froling with 1600 gal of storage, and it uses a flatplate exchanger, of a type used in solar hot water systems. The dhw storage tank is an electric hot water heater. The electricity is shutoff during the heating season, and then back on again during the non-heating season.
I have a boilermate DHW tank that runs like another zone, has it own zone valve that opens and closes as needed to pull heat from my 500 gal. of storage in an outbuilding.
woodsmaster
Minister of Fire
maple1
Minister of Fire
That's my setup too. Except I have a sidearm & flatplate in series - started with the sidearm, added the plate & just left the sidearm where it was. I use a B&G E3ecocirc to circulate on the domestic side of the plate, it is wired through an RIB relay that gets activated when a Johnson A419 calls for heat by opening a zone valve on the supply side of that zone loop which then sends the start signal to the relay when its end switch closes.
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