thermoi.pdf 

atmo‑turboblock‑plus‑ruk‑155454.pdf 

Vaillant
boiler: VUW SOE 202/2‑5 R3
 thermostat: VRT 390
• http://knx‑user‑forum.de/knx‑eib‑forum/6872‑vaillant‑gas‑brennwertkessel‑mit‑ebus‑eib‑anbinden‑2.html 
• http://knx‑user‑forum.de/wiregate/20249‑ebus‑usb‑plugin‑knx‑87.html 
• http://knx‑user‑forum.de/wiregate/20249‑ebus‑usb‑plugin‑knx‑96.html 
• https://github.com/mknx/smarthome 
• https://github.com/john30/ebusd  and https://github.com/john30/ebusd‑configuration 
• https://github.com/JuMi2006/ebusd 
See also Vaillant serial  port on boiler information
7‑8‑9 interface
• http://www.mikrocontroller.net/topic/126250 
• http://www.seidat.de/hp/heizung/ 
• https://en.wikipedia.org/wiki/OpenTherm 
I think that PWM doesn't apply for my VRT 390 thermometar
It also seems that it's not ebus  protocol