Need help with wiring of programmer

[freestyle]

Dear All,

I hope you all had a great Christmas.

Today I decided to remove the programmer from the wall (to allow for decoration)

I've never really been too happy with what I've seen in terms of how the programmer was connected.

After removing it, I am now worried as the wiring looks extreamly dangerous.

Firstly the programmer is a Siemens REV11 does this mean anything to anyone ?

Secondly at the back I have discovered a sindered wire. Although its hard to tell if this was by design or not.

I have found a PDF on it, but I could do with some advice on the wiring just to double check please

PDF is located at http://www.building-solution.com/opc_e/sheet/n2222e.pdf[/img]

 

[freestyle]

More information on the above.

The system is currently wired as follows:

2 brown cables are connected to the REV11

1 blue, and 1 earth from the same cable are basically loose at the back and look to be short circuited (ie. melted... looks like a soldering iron has been near them)

I decided to trace this blue and earth cable to see if they were connected to anything at the other end.

They are indeed connected, however the box seems to have thousands of connection in one of these

One other piece of information, I have a drayton HW / CH connected to all this.

 

[nstreet]

The item you show is a wiring center and is typically used in most central heating systems and yes there will be a number of wires in it.

This is where all if the connections for pumps, motorised valves thermostats and programmer re.

You need to establish what type of central heating system you have, i.e is it an 'S' plan 'Y' plan etc. Until you have done that it will be difficult to work out the wiring and also to get further help.

Have a look on the honeywell website for more info

http://content.honeywell.com/uk/homes/systems.htm

 

[freestyle]

Thanks for the fast reply.

Thats a great website, and one that I will bookmark

Looking at the options I believe I have a Y option.

Although, the other day I could have done with it being a W option.

That is I need LOTS of hot water for christmas day, and the heating came on..... so I ended up with no hot water until I turned off the heating..

The Y PLAN wiring diagram looks good, and should enable me to figure out whats going on.. but I could do with a bigger diagram..

I'll see what google returns

 

[freestyle]

Hmm

I've just come across this

Assuming that my Siemens REV11 is the CLOCK then where are the LIVE and N from the clock connected

 

[breezer]

Assuming that my Siemens REV11 is the CLOCK then where are the LIVE and N from the clock connected

via an fcu to the ring main

 

[freestyle]

On continuing on.

I notice in the diagram that the BOILER is in the wiring diagram. I cannot see any wires linking to my boiler ?

Could it be that my boiler detects when water is being pumped and turns its self on ?

 

[breezer]

I cannot see any wires linking to my boiler ?

thats probably because you haven't found it yet.

sometimes it is quicker / easier to "start from scratch" rather than trying to find what the old wires do / did

 

[kevplumb]

I cannot see any wires linking to my boiler ?

thats probably because you haven't found it yet.

sometimes it is quicker / easier to "start from scratch" rather than trying to find what the old wires do / did

hes only trying to change the stat

 

[breezer]

i should have looked at the pd f document first.

so why all the drawings i wonder?

 

[freestyle]

I'll keep posting things I notice, but you will need to read from the start to help me I think.

I can now confirm that the N (BLUE) is connected to E (earth) via wiring centre number 2 and number 3 based on the Honeywell Y plan diagram.

Does this seem right ?

In addition this connection is simply 2 wires loosely wound and fraid together with a bit of melting..

 

[freestyle]

You are both correct. I tend to like to KNOW how everything works, even if I am only checking / changing the thermostat.

The above question is the most important one.

Thank you for keeping a watchful eye on this thread, I'm already starting to get cold so I really need to get this working again.

But I can confirmThere is no link to the boiler at least from this control system. The pump is all that gets turned on..[/b]

 

[breezer]

since the pdf document says "the unit is supplied with batteries" that implies it is "self powered" and all it really does is connect the live to the switched live as and when required.

so why not connect it to the two brown wires.

 

[freestyle]

Ok.

It took me some time but I've traced each and every cable

PINK is really a WHITE CABLE

For the most part I hope you can ignore some of the connections.

But as the real concern is over this BLUE and EARTH loosely connected

 

[kevplumb]

methinks the stat has replaced an older one with an anticipator heater in it
hence the blue
if your diagram is correct they should not be touching

like breezer said insulate the blue and usr L & L1
and the earth if needed