Underfloor heating + Viessmann 222F

[Realist]

hi all,

Just purchased a property and looking at boilers etc. We’re going to have all of downstairs with underfloor heating (approx: 100 sq meters.) running backup rad pipes also downstairs (just in case!)

4 beds, will have an en-suite bedroom in the loft and also mid level bathroom. Rads in the other 4 bedrooms

Will the Viessmann 222F 35kw handle all this, or would a different setup be better suited?

 

[Aire]

The boiler will be fine for your heating but your hot water usage will determine if the boiler has enough hot water output or you may need a system boiler with unvented cylinder. Was the boiler recommended by your enginner?

 

[SimonG]

System boiler and unvented cylinder (if flow and pressures allow)

 

[ShaunCorbs]

Recommend the top mount kit for the underfloor heating

 

[Sharp Point]

Recommend the top mount kit for the underfloor heating

Top mount kit?

 

[ShaunCorbs]

Top mount kit?

Has its own plate to separate the heating from ufh

Vitodens 222-F Assembly Kit with Mixer

 

[Realist]

the mains is going to be upgraded.

I wanted a system where there isn’t so many factors, i.e. cylinder, boiler, pump etc.

This seemed like a good solution as it’s a complete all in one, with a water tank too.

I just want to be sure that if i run 2 showers, or two taps at the same time, it doesn’t reduce flow/pressure. And obviously in winter months with heating it won’t cause any problems.

Only 2 adults in the home at the moment, but thinking more towards future really.

Thanks for your help guys!

 

[Riley]

It will work but if you are going to the effort of upgrading the mains I would look at the unvented cylinder as it will give you a much better result as you will be able to open multiple outlets at the same time and still not see any performance drop

 

[Riley]

And regarding the number of components have you considered the fact that if your boiler packed up with an unvented cylinder you would still have hot water

 

[townfanjon]

As Shaun above says , you will need a top or side mount , on a system like that please do yourself a favour and run the UFH through the Viessmann divicon , expensive but made for the job .
222’s come with 2 cylinder sizes , not huge sorry cant remember exactly about