Replies

1. 
   wallyo | Mar 25, 2003 09:21pm | #1

   As far as I know you cannot feed the radinant floor with steam. You could perhaps use the steam to feed a second Hot water heater then put that in a closed loop to feed the Floor system if the boiler has the capicity.

   One house I did has force air upstairs, the owners dug a basement out put in radinant heat in the slab. The source of hot water is a regular Hot water heater, expanison tank, electric valve and a circulation pump. I don't think it is the best but it was the cheapest and the simplest and it works for them. If it were me I wonder if a instantous hot water heater (BOSH) could be used it is only on when there is a call for hot water.

1. 
   dudewith | Mar 25, 2003 09:38pm | #2

   Thanks wally,

   I was thinking that I probably needed at least another hot water heater and pump along with the necessary control valves; otherwise I can't figure out how the potable water and radiant heating water would remain separated.

1. 
   wallyo | Mar 25, 2003 10:34pm | #3

   Yeah.  The house I r refered to has two water heaters one for domestic the other for the slab loop.

2. 
   BungalowJeff | Mar 27, 2003 08:12am | #4

   Try here:

   http://64.226.150.132/hydronic/steam/steam1.htm#Steam%20Related%20Tech%20Talk%20Articles

   ...that's not a mistake, it's rustic

3. 
   Wet_Head | Mar 27, 2003 08:31am | #5

   nah... just run some open steam pipes into the floor...

   just kidding.

   no need to buy a separate unit.  you need a steam to water heat exchanger.  that's all.  of course you need the temp controls etc after that but...