Vokera Easiheat i25c opentherm

[AndyJ73]

Hi all, I have a Vokera easiheat i25c boiler and I am currently trying to swap out my draytin timer for drayton wiser controls. The issue is have is that when wiring it as per manual I am not getting opentherm control. I am.womdering if there is any steps I am missing to get this to work. I have attached pics pic of my boiler its board and wiring diagrams to see if it helps. Thanks Andy

 

[Stuckinarut]

Was the previous thermostat removed? Have links been removed? @vulcancontinental is likely your man for this.

 

[AndyJ73]

Previous was just a timer and it was fitted to terminals 1+2 where the bridge can currently be seen. Bridge has been refitted just to enable use of boiler while I sort the issue.
The bridge is vokera original just refitted.

 

[vulcancontinental]

I don't have mAnuals here but look at parameters, one, I think in the 7's group will be enabled/disabled OT, that needs to be 1.

 

[AndyJ73]

Thanks, I'll try that tomorrow. Just to check I'm reading it right opentherm is terminals 2 & 4?

 

[AndyJ73]

803 was the parameter i believe. Set to 1 from 0

 

[vulcancontinental]

Password is 53

 

[AndyJ73]

No luck with that. Not sure if wiring is incorrect the stat isn't compatible or there's a bigger issue?

 

[vulcancontinental]

This is on my easiheat-i in the training room, polarity unimportant.