Combi Boiler Two Zone Central Heating With UFH

[simpic]

Hi,

I'm looking for some help to verify the proposed schematic I have attached.

Untitled

• simpic
• 15 Mar 2012
• 1

The context is replacing an open vented system in a 60's / 70's house with a combi and UFH. Looking at a Intergas Combi.

Also, if someone could point out how to add a zone for a towel radiator as well please.

If the attached pipework diagram is correct I will add the proposed control & wiring to it for you all to look at and correct me!

Thanks in advance. I like to be well armed in advance of quotes from the builders and plumbers.

 

[dcawkwell]

Extra zone for towel rail is just using a zone valve in the same way you have
done for the other radiators and underfloor.

I would forget the underfloor. Never seen it work well yet and expensive to run.

 

[Dan Robinson]

I would forget the underfloor. Never seen it work well yet and expensive to run

Twaddle.

 

[dcawkwell]

I would forget the underfloor. Never seen it work well yet and expensive to run

Twaddle.

 

[Dan Robinson]

8)

Just my few bud.... never had any complaints from my installs.

Although i do go to a fair few that aren't working properly. Problems is once its down and finished the next poor s0d that looks at it has no idea what lies beneath.


Hence I bought the thermal imaging camera.

 

[dcawkwell]

8)

Just my few bud.... never had any complaints from my installs.

Although i do go to a fair few that aren't working properly. Problems is once its down and finished the next poor s0d that looks at it has no idea what lies beneath.


Hence I bought the thermal imaging camera.

Me being the poor s0d.

 

[simpic]

I'll have a look at that boiler.

As a side question.... does anyone know where I can get some software to draw heat schematics properly?

 

[simpic]

The Viessmann Vitodens 200-W with weather compensation and Sub mounting kit with mixer looks like a rather expensive option.

The boiler is £400 more than an Intergas one and then the Sub-mounting kit is ~£550 and WC unit another £150. nearly £2000 on kit before installation.

What benefits does this give over an Intergas Combi on the setup detailed in the schematic?

 

[Agile]

Many would fit the towel rail on the boiler output so that its always being heated when any of the zones are active.

Tony