Pipe route for radiator below window

Jupiter01 · 16 Dec 2015

Hi All,

I am in the process of laying out flow and return for the heating and will chase the drops (10mm plastic) into the wall. They will be connected to a 22mm in the floor void.

I have a number of rooms where the window is in the centre of the wall. In this case, which of the following do you reccommend:

a) come down the corner of the wall and then horizontally across at mid height of the radiator as I want the pipes to emerge from behind the rads

b) come down beside the window and then turn horizontally at mid height of the radiator

c) come down on either wise of the window (one side flow and the other return) and then turn horizontally. I thought that this may make the final twist of the pipes (beefore they head out to the radiator valves) easier.

I think each of these has pros and cons. I would be very interested in your opinion and any other options that I may have missed.

dazza87 · 16 Dec 2015

All would probably work,each side of window not ideal think i would keep them together.
I would make runs as short as possible so possibly side of window or as close as to miss future batterns for curtain rails/blinds etc.
You may struggle with angles out of box but you will have enough room behind rad for 10mm elbow(speed fit )if needed.

Other option depending on size of house,type of floor would be 2 run a pair of 22mm pipe down in a corner/cupboard then run pipes under ground floor (22mm)with 10mm up from floor in center of rads.You would probably get a better flow rate/system but more time and money. Dont think there is any need just makes pipes a bit neater and less chance of drilling through them at a later date

Jupiter01 · 16 Dec 2015

thanks dazza87.
The floor isn't an option (certainly not an easy one) as I have a concrete floor. I can try going wide enough as to miss any future curtain rails but clearly I don't know what width rail I will opt for and there is a risk that I will end up in the middle of the wall by making generous allowance for the rails...
I'm inclined to come tight by the window and put a metal capping in the vulnerable spot. What do you think?

dazza87 · 16 Dec 2015

If your living there and no one else is being let loose with a drill you will be fine.Measure where pipes are
Just measure of something thats not moving ie window/ opener,i know this is common sense but dont measure from corner of room .
You dont know if rooms out of square plasterer may have to bring boards out on dab,thickness of boards used etc. so your measurement would be useless

Jupiter01 · 16 Dec 2015

That's perfect.
BTW, when I turn horizontally at the mid height of the rad, presumably it's okay for the pipe to be curved around as I wont be able to get a 90 degree bend with the 10mm plastic and don't want to put a fitting into the wall chase?

Thanks again.

dazza87 · 16 Dec 2015

You will get a fitting behind rad if your struggling with angle.Just bring pipes out of a electrical single /double back box not forgetting rubber gromets that fit where pipe comes into box.Leave your self 100/150mm pipe then put a 10 mm elbow on if needed.
You can cut pipe short and fit elbow so it sits in box but being as its your first time i would leave a bit to play with.Get some 10mm nail on clips and just put a couple to fix back to wall behind rad makes it a bit easier when hanging

Jupiter01 · 28 Dec 2015

I'm struggling to see how I can achieve the horizontal turn without an elbow in the wall. I would welcome your thoughts on this. Here's a picture of one of the drops that I did. I welcome your thoughts on this

denso13 · 28 Dec 2015

You wont get round that internal corner without an elbow.

Jupiter01 · 28 Dec 2015

Is that okay? Is the Hep system robust enough to have fittings in the wall? I was hoping to avoid it but clearly, not possible in this case.

denso13 · 28 Dec 2015

I wouldn't but you don't have an option the way you've done it.

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Pipe route for radiator below window

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