drayton mistat p710r wiring troubles.

[leebleez]

Hi,

I was hoping someone would be able to point me in the right direction.

Ive just attempted to replace my old thermostat with a Drayton p710r
And i only seem to have 4 wires avalible one of which is earth
Wires avalible are , according to my past thermotasts wiring diagram

Blue... Live
Brown... Neutral
Black... neutral???
Earth.

The thermostat was connected up via a box of wiring to a programmer and the boiler.
Ive connected up the Blue to Live and Brown to neutral. And the black to Call for heat.
So that leaves me with common missing.





The boiler is a he15 non combi (naff).Please can anyone point me in the right direction,,,

 

[Whitespirit66]

Your wire colours don't make any sense. Which stat did you have before, and which terminals were the wires connected to?

You won't have two neutrals. It will have live, switched live, neutral and earth.

To make matters worse, the Mistat is new and I can only find user guides online - no installation instructions. I imagine that being battery powered, it will just need live and switched live - the neutral and earth will need to be made safe. But don't take this as read. It needs to be confirmed by referring to the manufacturer's wiring instructions.

 

[leebleez]

Untitled

• leebleez
• 1 Nov 2013
• 1

Untitled

• leebleez
• 1 Nov 2013
• 1

Untitled

• leebleez
• 1 Nov 2013
• 1

Hello mate thanks for the quivk reply.
As you can see its old as the hills and it had
Blue to 1
Brown to 2
Earth to 3
Black to 4

Also the wiring diagram in the manual for the new drayton.

Cheers

 

[Whitespirit66]

Apologies, didn't realise it was wireless. The receiver needs to have permanent L and N, which isn't available from the wires in your old stat. This supply needs to be via a 3 amp fuse, so best to locate the receiver near the wiring centre for system and use permanent L and N from the centre.

Then blue wire to 1 on receiver and brown wire to 3 on receiver. Take these connections from the wires' connections in the wiring centre.

The wires in wiring centre that go to the old stat need to be disconnected from centre and removed from wall at old stat. The new stat transmitter will either go where the old stat was located or in another suitable location of your choice.

 

[leebleez]

Brilliant mate thanks.

As it stood i had the blue to live and brown to neutral, black to call for heating
It did all light up and connect just didnt actually call for heat.

Ill start again i think

Cheers

 

[doitall]

The blue and brown in 1-2 are the switching pair. put either near a neutral and you'll do damage to the boiler.

You really need to find the other end as I think you'll find brown is the live and blue is the switch live.