Hello,
I just bought a new buderus delta boiler U012-24K and got installed. I did not have the chance to read the instructions that came with the boiler itself before I received the boiler nor the specific requirements were mentioned in the info sheets made for advertisment purpose. As I read the instructions more carefully, I found out that in a flat like mine where the heating is done through the heating elements under the floor -I mean between the two levels- one should set a lower temperature. On another page in the instructions it says that long term usage on low temperatures causes condensation which may eventually lead to corrosion of the exhaust pipes. To prevent that it says that one should get installed a three-way c*ck which was not installed at all.
As I applied to my firm which sold the boiler and made the installation, they said that it is not necessary though could not say in which situation it would be necessary to install a three-way c*ck.
Do you have any information about that situation? Are the instructions wrong? Which is correct?
Regards
Yalcin