Switched live on Viessmann vitodens 100 boiler

[Artin]

Hi all,

I have installed Viessmann vitodense 100 combi boiler and about to connect to my wiring center, I could not find to which connector/port on the boiler should I wire switch live. Has anyone experience with this?

 

[ShaunCorbs]

any chance you could take a pic of the boiler wiring ?

 

[Gasmk1]

Welcome to one of the worst wiring instructions for any boiler. The manual is terrible

 

[Artin]

any chance you could take a pic of the boiler wiring ?

Unfortunately not now, I don’t have access to the site now, the issue is I cannot find where to connect Lr and Ls on the boiler, even the representative is not sure for 100% !
I found from manual it can be connected to room stat connector (where Viessmann considers to connect Vitotrol), my wiring center (heatmiser UH4) gives Ls, Lr output for switching on/off the boiler, shall I connect both?

 

[townfanjon]

Artin , where are you ?
, Viessmans in England have L and L1 and these are linked in the factory.

 

[ShaunCorbs]

So L From the Viessmann goes to Ls on the heatmiser
Lr From heatmiser goes to L1 on the Viessmann

 

[Artin]

Artin , where are you ?
, Viessmans in England have L and L1 and these are linked in the factory.

i am in Armenia/Yerevan, here Viessmann does not have official representative, only distributor,

 

[OffshoreGas]

From the manual it looks like the boiler is designed to have the thermostats and valves wired directly into it empathetic than using a wiring centre.

 

[Artin]

From the manual it looks like the boiler is designed to have the thermostats and valves wired directly into it empathetic than using a wiring centre.

i think so, but not 100% sure, the output of the wiring center is a volt free, so it is quite similar to thermostat output signal, but since I am not sure i am looking for more concrete schema,

 

[Neil123]

i think so, but not 100% sure, the output of the wiring center is a volt free, so it is quite similar to thermostat output signal, but since I am not sure i am looking for more concrete schema,

Did you get sorted with your wiring? I am installing a uh8 to a viessmann 111w combi and have the same issue. Would be great to know if you found a soloution