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4 new rads in extension

Discussion in 'Plumbing and Central Heating' started by rich4nancy, 28 Nov 2010.

  1. rich4nancy

    rich4nancy

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    Hi all

    I have installed 4 new rads in an extension at home with 22mm copper flow and returns with 4 port manifolds on each end. (speedfit and 10mm barrier pipe on new rads) the 22mm copper is not yet connected to the existing heating system.The current system i have is fully pumped y plan with combined open vent and cold feed with air sep. I presume i can connect the 22mm flow to the CH side of the y plan? The return though is where i need help. i know i cant connect to cylinder return as this needs to be the last connection before the boiler(reverse circulation i think if not) the return off the cylinder is 15 mm as far as i can see with limited view. could i connect the new flow and return side by side on the existing flow ? would that work or am i needing to get floors up near rads to find the return? any suggestions greatly recieved.

    Cheers
     
  2. hibeealex

    hibeealex

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    if you connect both to the flow, you'll get nowt coming through as they will cancel each other out, you need to get the boards up and connect to the flow & return
     
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  4. John506

    John506

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    As above, connect to the nearest flow and return possible.
     
  5. rich4nancy

    rich4nancy

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    Cheers Guys thought that was the case. i guess thats the bathroom floor coming up then as new flow and returns are currently under the bath!
     
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