underfloor heating guides

[jase158]

Hi all,
I have secure the underfloor heating job, arranged a plumber who knows his stuff to give me a hand setting it up,

But just want some advice

Boiler is downstairs, pump in boiler, airing cupboard upstairs with 3 port valve and cylinder, manifold will be below boiler.

1. Where is the best place to connect flow and return, given that it has a 2 port valve, could i just connect the flow and return into the boiler flow and return or should it be after the 3 port valve?

2. How high is the insulation on the edges?

Just a little backround, underfloor heating is having 70mm insulation and 70mm screed.

Thanks again, will ask plumber that I am working with but I am really busy this week and want to work out costs.

 

[Gray0689]

Underfloor needs its own pump after mixing valve and teed in to return

 

[peteheat]

Any chance of changing the system to S Plan?

A three channel programmer would give you, hot water, radiators and underfloor as all should be controlled by thermostats.

UFH manifolds usually have their own pump and mixing valve so the S plan might help to make the controls easier to manage.

Just thinking out loud.

 

[Gray0689]

And liquid screed is better for underfloor quicker reaction times

 

[Gray0689]

Any chance of changing the system to S Plan?

A three channel programmer would give you, hot water, radiators and underfloor as all should be controlled by thermostats.

UFH manifolds usually have their own pump and mixing valve so the S plan might help to make the controls easier to manage.

Just thinking out loud.

Thinking correct

 

[plumber0808]

The f&R can be connected off the boiler as it has its own two port to control it.
the perimeter insulation is 150mm high