DRAYTON TEMPUS 7 heating programmer (WIRING)

[BIGRONMAC]

My old randell 3060 is to be replaced with a new tempus 7, the problem is on the tempus wiring i have. N L 1234 and on the randell i have 1 which is a black wire 2 red 3 red 4 red 5 dead 6 red 7 black 8 earth , sorry for be thick, to many wires not enough holes.
black to black blue to bits

 

[electronicsuk]

http://www.danfoss-randall.co.uk/de...Lang=2|strLang=en|intLevel=2|intLevel2ID=1087 has a wiring diagram for your old programmer, it shouldn't be difficult to translate this using the instructions for your new programmer. If you can't then it's probably best you call in an electrician to do the work.

 

[Gaz the Sparky]

This will be better just follow the wiring should be easy if not then as already stated call an electrician
http://www.danfoss-randall.co.uk/site/downloads/7485.pdf

G.T.S

 

[ODB]

I have exactly the same problem as BIGRONMAC - I have a big terminal on the Danfoss which is a (non mains) neutral, with 2 wires going to it. On the new Drayton there is no indication as to where these wires should go!

I was thinking 'Well, maybe they should go into the mains neutral' but then why have a seperate Neutral on the Danfoss then?

The wires are neutrals from CH and DHW I think - should these go to the CH and DHW 'OFF' terminals?

 

[ODB]

How is this a hijack? It's exactly the same problem!

The solutions posted above do not help and I've already had one electrician look at it (who was stumped). The documentation maps the wires across fine but doesn't tell you what to do if there are other wires present...

 

[ODB]

OK I sorted this out eventually for those with the same problem:

Even though the old Randall has 2 different negatives you put the spare wires from the Randall (in slot '1') into the negative of the Tempus ('N'). I ended up with 3 wires in the negative.

Everything sprang into life.

Hot water tonight, YESSSSSSSSSS!