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I am using at home Viessmann and made connection to ON/OFF contacts in the boiler. It was crystal clear. When I was trying to connect one of my friends Vaillant boiler with stats I saw this 24V RT connector. Looks like, that it is just the same ON/OFF connector, but then why to call it 24V RT...

No, switching is simple relay without any voltage.

Is this the correct solution?

Can be, but the control board is very similar to other Vaillant boards, that is why I commentend on an old post, where I saw the same PCB. So what is Burner OFF used for in this case? Why for dry contacts to use 24V RT? As I used Vitopends 100 boiler and thermostat with "volt free" contacts it...

I appologise for that. Next time will do better. Just read discussion and found out it could be relevant to my problem, my mistake. Thank you for informing me.

Hey, Friend, I have Salus same relay and Vaillant ecotec pure 236 boiler. My question is why do you use 24V contacts and not Burner OFF contacts. Isn't this burner OFF contacts for ON/OFF relays, what is written in SALUS solution description? What do you get from this solution 24V RT? Vaillant01...

Vaillant manual

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