Hello,
I'm new to domotica and everything around it.
My final goal is to integrate my boiler (a junkers eurostar) within the home automation system (openhab environment)
I stumbled upon the opentherm gateway to manipulate the boiler, but does this work with the combo of boiler (junkers eurostar) and thermosthat (junkers tr 200) ?
regards
junkers boiler and junkers tr 200 thermosthat with OG ?
Moderator: hvxl
Re: junkers boiler and junkers tr 200 thermosthat with OG ?
From a quick search on the internet, I don't get the impression the junkers equipment uses opentherm. It is therefor unfortunately very unlikely that you will be able to use the opentherm gateway.
Schelte
Re: junkers boiler and junkers tr 200 thermosthat with OG ?
I found this document http://www.thermosmart.nl/wp-content/up ... 112013.pdf
that says that junkers boiler do opentherm, but the wiring is the same as the on/off (aan/uit in the table) so I already had my doubts.
Any way of checking this since I have the hardware (boiler) without spending a lot of euros ?
that says that junkers boiler do opentherm, but the wiring is the same as the on/off (aan/uit in the table) so I already had my doubts.
Any way of checking this since I have the hardware (boiler) without spending a lot of euros ?
Re: junkers boiler and junkers tr 200 thermosthat with OG ?
A simple check you can start with, assuming you have access to a multimeter, is to disconnect the thermostat and measure the current when the wires are shorted via the multimeter. For opentherm the current should be between 5 and 9 mA.
If that's OK, measure the voltage on the line with the thermostat connected. It should normally be below 7 Volts, with short bursts to a higher voltage about once a second.
If either of these tests show a different result, you know the boiler and thermostat are not compatible with opentherm.
If that's OK, measure the voltage on the line with the thermostat connected. It should normally be below 7 Volts, with short bursts to a higher voltage about once a second.
If either of these tests show a different result, you know the boiler and thermostat are not compatible with opentherm.
Schelte