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  1. W

    Btu size?

    how do I size the btu needed for heating conservatory, 4m x 7m standard 3m ceiling hieght
  2. W

    Flow Rate for 10mm plastic pipe.

    I read the post on Smiths under plinth heaters there was no ref to size of input pipes, I wish to spur off the heating system with plastic 10mm will this support enough flow rate (70gph) I think is what is required. I have a Combi system
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