I am moving to a new house that has a combi boiler installed. I can see from the gas safety record that the combi boiler has an operating pressure in Mbar of 10mbr. I don't know what this means. When I search for a new shower that I would like to instal, it says either 1bar or 2bar pressure is required. Can anyone tell me whether my combi boiler is suitable for either of those systems?
mbr is material balance report mbar or bar is the measurement of pressure. in your case it is the pressure you require to operate the shower efficiently. Being your boiler is a 10mbar you shouldnt have any problem operating a 2bar shower. A plumber should be able to answer you in more detail though if you still need it.
Link below will help you understand 'bar'. It's a pressure rating....as PSI. The shower head uses the house water system pressure. Your boiler has a reduced operating pressure and gas supply pressure versus the house water pressure. Totally separate water systems. You will be fine installing any style shower head since it uses the house water system pressure and NOT the boiler water system pressure. Did I confuse you?
