UFH to help cooling?

[Mike]

2 hours ago, JohnMo said:

6 hours ago, Mike said:

No more than 6 circuits per manifold

That's a strange one - any obvious reason for this rule?

It isn't obvious, but I've tracked down the 1998 version of the regs that includes an explanation. That says to limit the circuits to 5 or 6 and to optimise the routing of loops to avoid concentrations of pipes, particularly in hallways, but to insulate them if necessary. Which I would take to mean to avoid condensation on parts of the floor that would, if pipes are too bunched up and not insulated, be a few °C cooler than the general floor temperature.

 

UFCH with cooling is pretty common France - apparently 1/3 of all new houses have it - and it has a long history, so their current regs (last updated in 2023) ought to be a good guide; I can spot a few things that have changed since 1998.

 

Edited 9 hours ago by Mike