Central Heating - Add a zone for underfloor heating?

[LocoBlade]

Hi All

We're having a single room ground floor extension built in the spring and would like wet underfloor heating rather than a radiator. Our current central heating comprises of a Vaillant condensing system boiler (slightly over-specced when we fitted it ~5 years ago so has sufficient capacity) using a single zone heating and hot tank circuits in an S plan configuration I believe.

To add underfloor heating for a single room (~4m x 4m) I'm guessing we'll need to add a new zone which can then be controlled by a separate room stat something like this, would that be correct?



The boiler is mounted on the wall of an existing single storey utility room extension backing onto the new extension so its all nice and close for plumbing in. My thinking at the moment would be to install the new zone valve and underfloor manifold in the loft above the boiler where the boiler outlet pipe already runs, rather than having the manifold at floor level. The underfloor piping would then actually connect to the manifold at ceiling height and run inside the wall down into the floor like this, does anyone see an issue doing that?



cheers

Edited by LocoBlade on Thursday 26th January 08:15

[LocoBlade]

Thanks for the confirmation about not having it on the same circuit

Regarding control, the plan at the moment is to get a system that can be controlled via a regular room stat then add it as a zone to our Hive system.

Any thoughts on running the UFH pipe from the loft of the existing extension rather than having the manifold at floor height in the new extension, how flexible is the pipe for going round 90 degree corners going from the wall to the floor (assuming elbows / joints are a no-no)

Edited by LocoBlade on Thursday 26th January 08:26