The Wall
Forum / Radiant Heating / type of water to use in radiant floor
  • Post a Reply to this Thread

    type of water to use in radiant floor (7 Posts)

  • bradley bradley February 5, 2011 @ 10:26 AM
    Contact this user

    type of water to use in radiant floor

    Hi.  I have a closed loop hydronic radiant system with a cast iron electric boiler.  I do not have an auto water feed.  My boiler manual says to treat the water if it is hard.  Would it be acceptable to used distilled water instead of using tap water and treating it?
    Reply
  • Gordan Gordan February 5, 2011 @ 11:55 AM
    Contact this user

    Well... sure...

    But how are you going to pressurize it so you can fill the system with it?

    If you don't have a leak (and therefore don't have to constantly replenish with fresh water) the hard water shouldn't pose issues - there simply isn't enough mineral content to do harm. And if you have a leak, fix the leak. That's my opinion, anyway... others may differ.
    This post was edited by an admin on February 5, 2011 11:58 AM.
    Reply
  • Mark Eatherton Mark Eatherton February 5, 2011 @ 8:25 PM
    Contact this user

    I use to say the same thing....

    And in most cases, it stands true, but a friends son in law sent me a report of the well water he'd used in his closed loop hydronic radiant floor heating system, and told me that his TT tank within a tank had completely plugged up, and the lower floors in the basement were completely closed off from the water.

    Conductivity
    1,982 μS/cm
    Maximum recommended =800 μS/cm

    Hardness
    60 gpg
    Maximum recommended = 10.0 gpg


    Iron (Total)
    222 mg/l

    Maximum recommended level = 0.3 mg/l


    Iron (Ferric)
    170.2 mg/l

    Iron (Ferrous)
    51.8 mg/l

    Manganese
    33.6 mg/l

    Maximum recommended = 0.05 mg/l

    pH
    5.23

    recommended range = 6.5-8.5

    Total Dissolved Solids (TDS)
    991 mg/l
    Maximum recommended = 500 mg/l

    The home is about 8 years old. It has a Vitodens boiler in it.

    Now, when someone asks me that water question, I give the only correct answer that can be given, that being "It Depends"

    Nasty water eh...

    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
    Reply
  • Gordan Gordan February 6, 2011 @ 10:37 AM
    Contact this user

    And they drink that?!

    I hope they never need an MRI... could get messy!
    Reply
  • Mark Eatherton Mark Eatherton February 6, 2011 @ 11:10 AM
    Contact this user

    Actually...

    They DON'T drink the water. Taste was the first indicator of a problem. They just purchased the house though Freddie Mac, who had taken the house back from the original purchaser. THe house was listed as having a good safe functioning well. Obviously, not safe. They are probably going to have to let Freddie Mac get it back because it is uninhabitable.

    Bummer....

    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
    Reply
  • bradley bradley February 7, 2011 @ 8:11 AM
    Contact this user

    filling system

    I haven't figured out how to fill the system, but there has to be a way.  Dan says not to rely on auto fill.  Any ideas?
    Reply
  • Slimpickins Slimpickins February 7, 2011 @ 8:32 AM
    Contact this user

    Your answer

    Here ya go:. http://axiomind.sasktelwebhosting.com/mf200.php
    Reply
  •  
Post a Reply to this Thread