Ask The Trades - Print Page

Ask The Trades
https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Electrical Questions >> Rayburn Wiring https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1249666533 Message started by starflip on Aug 7^th, 2009, 6:35pm

Title: Rayburn Wiring
Post by starflip on Aug 7^th, 2009, 6:35pm

Hi, wondered if anyone could help shed some light on wiring up a rayburn or even show a simplified diagram ;) . Basicly the rayburn itself has a built in 2 channel programmer to control cooker and hot water, but part L of the building regs says you need a programmable room stat to do heating ( i think). there is a mid position valve, a tank stat and the pump

Title: Re: Rayburn Wiring
Post by sparky415 on Aug 7^th, 2009, 8:18pm

Is there a wiring diagram inside the lid of the programmer?
(This might say to remove a link )

if no one else can help you on here you could try looking on this site

http://www.rayburn-web.co.uk/raytech/chtg1.htm

Title: Re: Rayburn Wiring
Post by Lectrician on Aug 7^th, 2009, 9:35pm

Sounds like a standard central heating system using the rayburn as 'a boiler'.

You simply need to place your room stat in series with the live between the CH ON terminal of the built in programmer and the mid position valve. The stat may also require a neutral depending on which you buy.

You can take a 3 core and earth cable from either the programmer or the wiring centre/joint box adjacent the mid position valve.

Take some pics of the wiring centre by the mid position valve, post them here and we could show you how to wire it.

Title: Re: Rayburn Wiring
Post by starflip on Aug 7^th, 2009, 11:05pm

Thanks for the quick response, I do not have any pictures i can show you as im starting it from scratch, have taken a 3core to roomstat, 3 core to tank stat and the pump mid position valve and rayburn are all together so need to wire it all into a wiring centre, here is a copy of the diagram in the instructions manual (no pump connections i notice??) also which programable room stat do i need to buy for this set up? http://www.rayburn-web.co.uk/raytech/chtg5.htm

Title: Re: Rayburn Wiring
Post by Lectrician on Aug 8^th, 2009, 8:23am

Well, all the info you need is in that link you have given ;-)

The pump connect to the rayburns PL and PN (pump live and pump neurtal) by the looks of it, this is because the rayburn has a pumo overrun to keep heat moving away from the rayburn when cooking etc.

The diagram included in the link shows the central heating room stat as a programmable type, and for this reson they have connected this stat to the permenent live on the diagram rather than the CH ON outout on the rayburn. If you use a standard room stat you would swap this over.

I thought you said there was a programmer built in? The diagram certainly suggests so. Often this is an optional extra, and in my experience is just a rayburn rebranded honeywell. Best to order this with the rayburn.

Here is the diagram, I extracted it.

[edit]Ah, the two channel programmer operates the HOT water and the cooker side. This leaves to provision for the heating which is why they tell you to use a programmable room stat and connect it to the permenent live.

You are not going to get a simplified diagram than the one above, it is a very simple schematic. I guess you want a drawing of exactly what to wire to which terminals in a wiring centre, but to be honest, you should be able to produce this yourself by looking at the schematic.[/edit]

Title: Re: Rayburn Wiring
Post by scotspark on Aug 8^th, 2009, 4:40pm

is the rayburn the only heat source for the heating or is there also a boiler???

also the plumbing is very important with a rayburn so that gravity will take hot water away in the event of a power cut

Title: Re: Rayburn Wiring
Post by Lectrician on Aug 8^th, 2009, 5:45pm

scotspark wrote on Aug 8^th, 2009, 4:40pm:

This is not a true rayburn - It is basically a boiler inside a rayburn case.

There is a pump over run on the boiler, and this must be used. You also need to include a bypass on the rads loop - either a towel radiator, or bathroom radiator, or use an automatic bypass loop if the pipe run in long enough. All the info on plumbing is given though - and I am sure you are using an installer?

Title: Re: Rayburn Wiring
Post by starflip on Aug 8^th, 2009, 6:41pm

I am happy to say that I got it all up and running, think the main problem was i tried to rush it late fri and started tearing my hair out. But after writing down the colours I was going to use and following the diagram it wasnt too bad !!

Plumbing looks all good too.

Thanks guys. ;D

(Any one no why is it that all programmable rooms stats these days dont use a neutral and are battery powered. Surely thats not as good ? )