potable water preheat part 2

Couderay

Thanks I do have out door reset first chance i get will turn it down

Couderay

potable water preheat part 2

Thanks for the replys on other post but still hoping for other answers.Can I or is it possible to use baseboard returns for tempering potable water. Is a buffer tank possible for this. Actually what I'm thinking is a tank with coils to run the returns from the base board thru to temper the incoming well water to the superstore.

Ron Schroeder

Joe

If you use the return water to temper your incoming domestic you will be using the same BTUs that you would in an indirect tank so the loss of BTUs will have to be made up in the boiler. However if you used the heat left in you boiler at the end of a cycle then you would be saving from the waisted BTUs that go up your chimney in an off cycle.

Couderay

I was going to use a seperate tank to do my tempering maybe I'm all wet here. The main concern is my boiler does not condense well when base board is being used. Yes I'm still running at 180 and need to turn down the temp. Havent been able to really play with different temps on the boiler to this date. I was wondering if running the the base board returns thru mentioned tank would help.One to temper the incoming water and two help with the mod-con condense more.

[Deleted User]

Thats what I THOUGHT you were tyring to do and say...

And the best I can suggest is that you put an outdoor reset on the baseboard convection system. You'd be suprised at how much heat you can get out of that stuff at temperatures below 180 degrees F.

The American hydronic heating contractor has been well trained by the industry. They think that in order for finned tube convector to really work, it MUST see a minimum temperature of 180 degrees F. Nothing could be further from the truth. Don't be afraid, turn it down and or add an outdoor rest controller to it.

Even if its not condensing, the minimumn thermal efficiency is around 86% which ain't too shabby in and of itself...

ME

Bob Sweet

Joe

I've got Baseboard heat in my house, mith a CI boiler and outdoor reset. My design day temp. setting on the reset is 10* to supply 180* temps to the BB, for the majority of the winter the BB gets temps in the range of 145 to 160, works great and saves me about 30% on my fuel bills. I'm even a little under radiated, work with your reset to find the sweet spot for your system.

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