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

Richard Miller

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

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