Robert Tyrrell
Gas Engineer
- Messages
- 701
Right, I've got the hang of the DuoTech coupled to the NEST but, sadly, I have a problem with an EcoBlue 33 now.
I've wired it as in the diagram attached but I can't seem to get it to fire on the CH. Fine on the DHW. The NEST is working fine, as far as I can tell. It's got 12V from the T1 T2 terminals at both the NEST and the Heatlink, but I just cannot fathom this out.
I've had to use the existing wiring and that's why its got the 3 cable setup as in the diagram, 4 if you count the room stat cable.
So if any of you clever people (I was going to write 'Bright sparks' but I didn't like the pun) can help me out I'd be very grateful.
This was a Keston Celsius with an UVDHW cylinder and my customer wanted it replaced by a combi. Simple I thought
I really should stop counting chickens, it's just that I'm forever the optimist me
I've wired it as in the diagram attached but I can't seem to get it to fire on the CH. Fine on the DHW. The NEST is working fine, as far as I can tell. It's got 12V from the T1 T2 terminals at both the NEST and the Heatlink, but I just cannot fathom this out.
I've had to use the existing wiring and that's why its got the 3 cable setup as in the diagram, 4 if you count the room stat cable.
So if any of you clever people (I was going to write 'Bright sparks' but I didn't like the pun) can help me out I'd be very grateful.
This was a Keston Celsius with an UVDHW cylinder and my customer wanted it replaced by a combi. Simple I thought
I really should stop counting chickens, it's just that I'm forever the optimist me