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Plumbing and heating

  • 28-05-2011 3:58pm
    #1
    jimmij
    Closed Accounts Posts: 5 ✭


    The wallis heater beside my hot tank has gone for my hot water I know how to change the heater itself but how do I empty the water?there is a stopcock isolating the cold feed to the main tank with a drain off outlet.
    There is also a stopcock on the heater feed itself which turns off the incoming supply but which is the best way of draining to be able to open the pipe at the top to take the heater out.
    Ps. I'm ok with the electrics.
    Thanks Jim


Comments

  • #2
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 25,763 CMod ✭✭✭✭Spear


    Moved from N&F.


  • #3
    Sparkpea
    Registered Users, Registered Users 2 Posts: 1,118 ✭✭✭Sparkpea


    jimmij wrote: »
    The wallis heater beside my hot tank has gone for my hot water I know how to change the heater itself but how do I empty the water?there is a stopcock isolating the cold feed to the main tank with a drain off outlet.
    There is also a stopcock on the heater feed itself which turns off the incoming supply but which is the best way of draining to be able to open the pipe at the top to take the heater out.
    Ps. I'm ok with the electrics.
    Thanks Jim

    can you take a few pics and post them? its extremely bad practice to have a stopvalve on the feed of an immersion heater but if there is one then turn it off and turn off the cold feed to the tank, open your hot water taps to drain the water out of the pipes, preferrably downstairs if your HW tank is upstairs.

    There will always be water in the pipe at the top of the heater but its only water thats in the pipe there shouldnt be much pressure on it but have a few cloths or a bucket to catch it.


    You can only do the above if theres a valve on the feed to the immersion otherwise you will just need to turn off the cold feed going into the HW tank and if theres no draincock on it for a hose at the bottom you will need to disconnect the plug or drawoff pipe at the top of the tank and put a pipe in the top attached to a hose and siphon it out through the hose, one huge suck on the hose should be enough to start it.


  • #4
    jimmij
    Closed Accounts Posts: 5 ✭jimmij


    Hi Sparkpea
    That's great, there def is a valve on the feed just one question with this valve off why do I turn off the cold feed to the tank is it to do with airlocks?


  • #5
    Sparkpea
    Registered Users, Registered Users 2 Posts: 1,118 ✭✭✭Sparkpea


    jimmij wrote: »
    Hi Sparkpea
    That's great, there def is a valve on the feed just one question with this valve off why do I turn off the cold feed to the tank is it to do with airlocks?

    because if you dont it will push the water out the draw off at the top and down the pipe to the top of the immersion and flood :)


  • #6
    jimmij
    Closed Accounts Posts: 5 ✭jimmij


    Sparkpea
    Excellent sir.


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