Vokera linea 24 Nest install

[cybermaster]

Hi all,
I have a Nest stat, heatlink mounted and has a 4 way & earth connected with a separate 2 way connected.
2 way to go to wall stat T1 & T2 12v from the heatlink.

Earth to earth
Heatlink L to L on boiler
Heatlink N to N on boiler

Question is 2 & 3 on heatlink ( i think are supposed to go to TA TA ) on boiler can someone confirm and can they go either way round.

Currently the TA TA go to the old wall Stat (still connected until I'm sure which way round it needs to go)

Cheers guys

 

[davesparks]

If the two TA terminals current have the thermostat connected between them then yes you would remove the existing connections and connect the nest terminals 2 and 3 to them. It's just a switch so it doesn't matter which way round they are.

 

[cybermaster]

Thanks for the quick reply, to confirm I have realised it's not both TA connections it is the Top one which is = and the next one down which is TA.
Attached are 3 photos
1. Nest diagram 2 & 3 used.
2. Vokera terminal block diagram.
3. Actual photo of current active connections.

I'm presuming it's still the same no 2 and 3 from heatlink to the = and 1st TA terminal to replace the 2 that I will take out.

Cheers all.
[automerge]1586186572[/automerge]
Forgot to add attachments.

 

[davesparks]

Yes connect to = and TA to replace the existing thermostat.