Manifold location + counter battening for running pipework

richardgreene

Hi,

I'm restoring an old house and having underfloor heating installed in ground floor and rads upstairs. Heat source is oil boiler. Hot water tank and heating manifolds will be under the stairs.

Does anyone know if the manifolds can be located underneath the hot water tank. I'm really trying to maximise usage of space.

I think the tank will be a 300 ltr 1.83m high tank.

Another point - the plumber suggested that counter battens be placed on bottom side of first floor joists in order to run heating pipes to rads upstairs. I don't want him to be cutting into the floor joists.

Would anyone know what dimension timbers would work for this, and how they would run, and be attached.

Many thanks in advance

Richard

10-10-20

https://www.boards.ie/discussion/2058427843/manifold-location-counter-battening-for-running-pipework

300l = ~300kgs of water alone, and it's already 1.83 m high and will have to sit on the floor, so I'm not sure how you envisage that you'd also fit manifolds under there as it stands.

Nobody should be cutting into joists - but they can be drilled though, and there is a spec for doing so without weakening them. Counter-battens could be an option, but that's adding 2 to 3 cms into the floor height…

Lenar3556

https://www.boards.ie/discussion/2058427843/manifold-location-counter-battening-for-running-pipework

Typically the manifolds could be located at any convenient point, but as 101020 has pointed out, the cylinder should be on the floor.

On the counter battening, it’s one to discuss with your plumber, but usually at least 2” x 2”. These would be screwed to the underside of the joists (running in the opposite direction) at 400mm centres.