heating diagram

[gillsgooner]

can anyone help
been asked to connect a heating which i've never come across before,
the system looks like a s plan with 1 x2 port valve and 1 x3port valve with 1 pump but 2 hot water cylinders . how do i connect the 2 cylinders together with 1 programer.Any suggestions or wiring diagrams woud be great thanks

 

[Butchybutch]

It sounds like a "Y" plan with a zone valve installed for further control, if you want to control both valves you will need a 3 channel programmer like a Horstmann.

Just for information I have 2 cylinders in my house standing side by side in the loft, the primarys are connected together and they are controled by a single cylinder stat. Its been working perfectly for 15 years.

I could fit more controls but why bother, its working great!

Happy days

Brian

 

[Gasinayr]

OSO unvented cylinders are controlled that way. Go to www.oso-hotwater.com and you will find all the information you need including wiring diagrams