softened water in sealed pressurised system?


Postby chris_on_tour2002 » Sun Mar 08, 2009 11:04 pm

i installed a water softener last year. finally gotten round to draining down my sealed, unvented system (also brand new last year) and refilled with lovely soft water, no limescale. great - or so i thought.

having done it i've now noticed that (some) softener manufacturers explicitly state that unvented pressurised systems should not be run with water from the softener.

anybody know why? i'm guessing it's to do with boiler components. should i drain down again and refill once again with hard water?

and what happens if you install an unvented system in a naturally soft water area? should one add the minerals to encourage limescale?
chris_on_tour2002
Rank: Project Manager
Posts: 1024
Joined: Thu Aug 30, 2007 9:14 pm

Sponsor

Simply Build It

Postby htg engineer » Mon Mar 09, 2009 5:19 pm

I think it will be more beneficial than a problem.

'Naturally soft waters of low alkalinity have a tendency to increase the corrosion of metals used in boilers. This has led to the misconception that artificially softened water is corrosive and should not be used in domestic boilers and central heating systems under any circumstances. In fact, softening has been shown to be beneficial to most system metals when small amounts of dissolved heavy metal ions that are present in the water are removed by the softening process.'


htg
htg engineer
Rank: Project Manager
Posts: 3224
Joined: Tue May 22, 2007 5:22 pm

Postby chris_on_tour2002 » Mon Mar 09, 2009 5:45 pm

thanks for that htg - as i was hoping.

thank goodness i don't have to drain down again!
chris_on_tour2002
Rank: Project Manager
Posts: 1024
Joined: Thu Aug 30, 2007 9:14 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics