CH wiring problem

[ceolmar]

My newly installed cyclinder stat doesn't appear to be switching the pump on/off or changing the 3 port valve. I assume I've wired it incorrectly. Can somebody confirm that the terminal labelled C in the cylinder stat should be wired to the 'CH on' terminal in the programmer? Also, as it is a Honeywell Y plan system, where to the terminals labelled 1 & 2 in the cyclinder stat need to be wired to?

Thanks in advance

 

[ArtfulBodger]

DHW from programmer to common, terminal 2 to grey and linked to DHW off, terminal 1 to orange and live terminal of pump.

 

[shaggy]

I've wired a few of these and I've got '1' to DHW 'on'; '2' to grey & DHW 'off';'C' to orange & boiler+pump live.
We appear to disagree Artful? Don't tell me I've done them all wrong.

 

[mave]

http://content.honeywell.com/uk/homes/Catalogue/Sundial Plans/3.4 Y Plan.pdf

This link should help

 

[shaggy]

Thanks mave, that's the best wiring diag I've seen so artful is definitely right. I've got some houses that I let and the heating works ok so I'm wondering if I copied the wiring circuit wrong. I had to rewire the ch when I bought them and they've got very old combined room stat and programmer so the wiring took a bit of sorting out and I wrote down what I'd done. I've got two with different tank stats that have 1,2 & 3 instead of 1,2 & C. I think that the old 2 becomes 3 and the old C becomes 2.
Anyway, apologies from me artful.

 

[ArtfulBodger]

there's more than one way to skin a cat if you're into that sort of thing

 

[kevplumb]

cant sleep artful ?

 

[ArtfulBodger]

cant sleep artful ?

wimmin trouble playing on my mind oh, and i've pulled something in my back now that really hurts

 

[kevplumb]

prob why youve got wimmen trouble