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Thread: Fitting New Radiator

  1. #1
    Regular Member stevie16v's Avatar
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    Default Fitting New Radiator

    Looking at changing my radiator in the bedroom because it's pathetic. Quite happy to change it myself but a bit confused about the sizes. On the site I'm looking at buying from it states Pipe centres. I might be being a bit naive here but where exactly do I measure from/to? Please don't say pipe centre to pipe centre

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    Regular Member Critch's Avatar
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    Measure in diameter and outer diameter of the pipes

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    Regular Member stevie16v's Avatar
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    Would that not give me the size of the inlet and return pipes? The ones im looking at, the pipe centre size is always 80mm more than the width of the radiator. eg a 400mm radiator is 480mm pipe width

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    Regular Member Critch's Avatar
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    O I'm not sure then mate.

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    Regular Member Ste's Avatar
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    Surely it mean how far apart the pipes are? ie the horizontal gap between the pipes coming up through the floor, or out of the wall. Measuring from the centre of one pipe to the centre of the other, horizontally.

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    Regular Member Critch's Avatar
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    ^^^

    That would make sense.

    Shows how little DIY I do.

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    Regular Member stevie16v's Avatar
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    Quote Originally Posted by Ste View Post
    Surely it mean how far apart the pipes are? ie the horizontal gap between the pipes coming up through the floor, or out of the wall. Measuring from the centre of one pipe to the centre of the other, horizontally.
    I had a fair idea thats what it would be, Mine is measuring in at 700mm so theres going to be 20mm difference. I'll just need to use a tail extension on it or bend the pipe work slightly

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    Don't bend the pipe, you'll either kink it and it need replacing and If you actually manage to spread it 20mm the pipes will be at an agnle and not fit into the valves correctly so will leak.

    Your only option is a small extension, I had to fit one in my living room radiator. Easy to fit and any DIY store will sell them.

    Make sure you get the correct BTU rating to suit your room size.
    http://www.homesupply.co.uk/radiator...calculator.php

    The other cheaper option will be to remove your old radiator, then flush it clean. It could be just full of crap. Unless it's too small.

    When you've fitted it, make sure you put some Inhibitor into the system.
    http://www.screwfix.com/p/sentinel-x...tor-1ltr/79683
    Last edited by Keif; 5th February 2012 at 15:36.

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    Regular Member Keif's Avatar
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    In actual fact are you sure the radiator fitted needs replacing?

    Is your heating system balanced? It could be the fact that that radiator isn't getting enough hot water as all the other units in the system are getting too much.

    Each rad in the system should be set up so the outlet pipe is 12degC hotter than the inlet pipe.
    makes a huge differnce to the effiency of your whole system

  10. #10
    Regular Member stevie16v's Avatar
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    It is definitley all set up correctly, unfortunately whoever originally fitted it put in a 600x750mm radiator single panel with a btu of well, not very much! I knew before I needed a bigger radiator, just never got around to it. The radiator is also fitted at the opposite wall from the window so it isnt getting the cold air as it comes in. Thanks for all the advice

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