Vaillant


thermoi.pdf

atmo-turboblock-plus-ruk-155454.pdf

Vaillant

boiler: VUW SOE 202/2-5 R3
thermostat: VRT 390

See also Vaillant serial port on boiler information

7-8-9 interface

I think that PWM doesn't apply for my VRT 390 thermometar

It also seems that it's not ebus protocol