Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Been a long time since I did this... Electric WH as an indirect

Going to have a wood fired boiler and am using an existing electric WH as an indirect.

Am using a heat exchanger (of course!) but cannot remember how I did it before.

I can't remember... take water out of the bottom and return it into the hot side? Or into the cold side? (That doesn't make sense.)

I have done it and it worked well. Any help?


  • hot_rod
    hot_rod Member Posts: 22,107
    If you can find

    a Bradford White, many of their tanks have additional side taps to make the use of external HX very easy. AO Smith offers a tank with a plate HX mounted on the outside also.

    Or remove the drain cock and add a brass tee for the connect to the woodstove HX. And a tee at the top hot for the other side.

    Actually with a pumped flow on the hx connection points are not that critical. Cold enters the bottom of the tank, I pull from there.

    Or consider the Butler solar wand which screws into the top and doesn't require a circ.

    hot rod
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
This discussion has been closed.