I do agree with you, but government websites are not that bad. They give lot of useful information. But forums are good, but trusting the forums is like taking some risk. We can't believe that everything is forums is correct.
Rahul
I think by law your not allowed to install your boilers. You need to contact registered engineer for that. I think you can get the best advice if you visit the some of the government websites related to registered engineer.
Thanks
Rahul