On Demand HW or Electric HW

lsayre · Post by **lsayre** » Wed. Feb. 14, 2018 9:01 am

hotblast1357 wrote: ↑
Wed. Feb. 14, 2018 8:45 am
No I do not, I could be using water when the heat is on.

Do you have an indirect HWT that is heated via the plate exchanger, or does your plate exchanger directly function similarly to a DHW coil (sans for being remote from the boiler)?

McGiever · Post by **McGiever** » Wed. Feb. 14, 2018 9:44 am

With a plate exchanger feeding a indirect tank there would be an extra, needless zone circuit involved there, so not likely.

hotblast1357 · Post by **hotblast1357** » Wed. Feb. 14, 2018 10:07 am

My plate exchanger feeds my electric water tank.

McGiever · Post by **McGiever** » Wed. Feb. 14, 2018 10:12 am

hotblast1357 wrote: ↑
Wed. Feb. 14, 2018 10:07 am
My plate exchanger feeds my electric water tank.

Like Larry's "remote tankless coil" description, right?

windyhill4.2 · Post by **windyhill4.2** » Wed. Feb. 14, 2018 10:17 am

hotblast1357 wrote: ↑
Wed. Feb. 14, 2018 10:07 am
My plate exchanger feeds my electric water tank.

What is the purpose of a water tank after the plate exchanger ?..... Especially if circulation is constant thru the plate exchanger ?
Curiosity killed the cat, but without asking,i might never learn.

I have been using my plate exchanger since 2009 with no tank.

hotblast1357 · Post by **hotblast1357** » Wed. Feb. 14, 2018 10:20 am

Yes kinda like a remote tankless, and a indirect all in one.

It gives me 40 gallons of buffer IF somehow my boiler can’t keep up, and it prolongs the life of my electric tank.

Post by **Rob R.** » Wed. Feb. 14, 2018 10:26 am

Also very handy if you don't want to burn coal all summer.

hotblast1357 · Post by **hotblast1357** » Wed. Feb. 14, 2018 10:31 am

Yes that too, I am going to try to! But I don’t think it will be cheaper than electric, all depends!

windyhill4.2 · Post by **windyhill4.2** » Wed. Feb. 14, 2018 11:41 am

hotblast1357 wrote: ↑
Wed. Feb. 14, 2018 10:20 am

It gives me 40 gallons of buffer IF somehow my boiler can’t keep up,

IF your boiler can't keep up

hotblast1357 · Post by **hotblast1357** » Wed. Feb. 14, 2018 11:43 am

You never know!

-25 below, boiler is on low side of aquastat set point, 156 degrees, basement radiators come on and house heat comes on, it will drop a little for a couple minutes.