Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

central heating

  • 21-12-2012 9:24am
    #1
    jayceegoodmark
    Registered Users, Registered Users 2 Posts: 7 ✭


    about plumbing.
    Does anybody know if it is acceptable to disregard a heating header tank and tee the cold feed to the heating system from the domestic cold feed to the cylinder, using a non return valve and expansion vessel.


Comments

  • #2
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,757 CMod ✭✭✭✭Spear


    Try the heating forum instead:

    http://www.boards.ie/vbulletin/forumdisplay.php?f=1320


  • #3
    Dtp79
    Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    jayceegoodmark wrote: »
    about plumbing.
    Does anybody know if it is acceptable to disregard a heating header tank and tee the cold feed to the heating system from the domestic cold feed to the cylinder, using a non return valve and expansion vessel.
    It is if its not for a gas boiler and ONLY if you use a filling loop and it is removed from the cold feed and blanked. This can be re joined if a pressure top up is required


  • #4
    jayceegoodmark
    Registered Users, Registered Users 2 Posts: 7 ✭jayceegoodmark


    Yes, I agree a filling loop would be the best method, although I do know of several housing estates here in sligo with a permanent connection from the domestic cold feed to the cylinder just using a non return valve, expansion vessel and safety valve.
    I would have thought that if the non return valve failed, as they do, water from the heating system could expand into the domestic supply, and it would never be known if the expansion vessel was functioning correctly, that can't be healthy.


  • #5
    Dtp79
    Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    jayceegoodmark wrote: »
    Yes, I agree a filling loop would be the best method, although I do know of several housing estates here in sligo with a permanent connection from the domestic cold feed to the cylinder just using a non return valve, expansion vessel and safety valve.
    I would have thought that if the non return valve failed, as they do, water from the heating system could expand into the domestic supply, and it would never be known if the expansion vessel was functioning correctly, that can't be healthy.
    It's not just in Sligo it's nationwide the so called " semi sealed " system


Advertisement