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Removing a radiator

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  • 27-02-2021 11:32am
    #1
    johndaman66
    Registered Users Posts: 4,095 ✭✭✭


    Hello folks, I have previously re-tiled the bathroom floor back home and am moving onto re-tiling the walls now. I will need to remove the radiator from the wall. I have no problem with the mechanics of removing the radiator itself and putting stoppers on as have done plenty of small plumbing jobs before. I know what to expect

    However, I'm wondering if after removing the radiator will water need to be replenished to the central heating system through the boiler? Also can the heating be used ok with the radiator off? It is oil fired central heating with a Grant boiler (can provide the exact model if that's relevant).

    Many thanks in advance for all constructive input and apologies if this question has being asked previously on the forum.


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    #2
    youtheman
    Registered Users Posts: 1,268 ✭✭✭youtheman


    In theory, you can remove the rad without draining down the system by just closing the valves on either side and breaking the connection between the radiator and the valve. You have to put something under the connection to collect the full contents of the radiator. I would prefer to drain down the fully system before I take off the radiator. If both valves are holding then you don't need to install blanks. If your system is vented (with a tank in the attic) then the system will automatically refill and make up for any volume loss. If it's a sealed system and if the autofill valve is open the the same will apply. If it's a sealed system with the autofill valve closed then you'll have to open it to top. Remember to add corrosion inhibitor if you drain down the system.


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    #3
    karlitob
    Registered Users Posts: 2,574 ✭✭✭karlitob


    youtheman wrote: »
    In theory, you can remove the rad without draining down the system by just closing the valves on either side and breaking the connection between the radiator and the valve. You have to put something under the connection to collect the full contents of the radiator. I would prefer to drain down the fully system before I take off the radiator. If both valves are holding then you don't need to install blanks. If your system is vented (with a tank in the attic) then the system will automatically refill and make up for any volume loss. If it's a sealed system and if the autofill valve is open the the same will apply. If it's a sealed system with the autofill valve closed then you'll have to open it to top. Remember to add corrosion inhibitor if you drain down the system.

    Good info here. I’m thinking about changing the type and position of my radiators in a few rooms. I’ve a sealed system (at least I think i do) and a flexicom 18k boiler. Is it straightforward enough to drain the system? I’ve no drain cock on the lowest rad. Thanks in advance.


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    #4
    karlitob
    Registered Users Posts: 2,574 ✭✭✭karlitob


    karlitob wrote: »
    Good info here. I’m thinking about changing the type and position of my radiators in a few rooms. I’ve a sealed system (at least I think i do) and a flexicom 18k boiler. Is it straightforward enough to drain the system? I’ve no drain cock on the lowest rad. Thanks in advance.

    Any advice on this? Thank you.


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    #5
    niallers1
    Registered Users Posts: 799 ✭✭✭niallers1


    You'll probably need to repressurize after you out the new radiator back on.


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