Underfloor heating

[bringit]

Hi, i am in the middle of securing quotes for the installation of underfloor heating in a new extension, however I have had two different heating engineers round, who are saying different things, so naturally I thought of turning to the internet for a definitive answer!!

I have a boiler in utility.
I have a hot water cylinder in upstairs closet, the pump is also up here
The UFH is to be installed in the soon to be built kitchen/diner next to the utility room

Gent 1 - said that the connection for the manifold would be taken from the boiler
Gent 2 - said that the connection for the manifold would have to be taken from the upstairs closet

Surely they can't both be right? How am I as the consumer know who to go with? Any help from the internet would be appreciated.
thanks,

 

[Dan Robinson]

Gent 2 is correct based on what you have said.

 

[bringit]

thanks Dan, would you need to know any other info that I have not covered to be sure of the answer?

 

[Dan Robinson]

More specifics about the heating system would be useful - boiler, contents of the airing cupboard (apart from your undercrackers).

 

[Agile]

I would say that either could be correct depending on how they were going to do it.

But 2 would usually be easier depending on the existing system layout.

Unless a significant area is involved I never think that UFH is worthwhile. Perhaps only for over 20 sq m.

The different heat up characteristics have to be understood and catered for by the controls.

Tony

 

[DP]

Tony if the pump is in the closet, how will circulation take place if teed to flow and return at the boiler ( think vent connection at flows and feed/ expansion at return)

If living in a tent, UF is useless.

 

[Agile]

Separate pump for UFH.

 

[DP]

Separate pump for UFH.

So you are talking two pumps then, one for UF coil circulation, another primary circulation?

 

[Agile]

Most mixed systems use a separate pump and temperature blending valves for the UFH loops.

How else would you do it?

 

[Dan Robinson]

I feel a facepalm coming on