Re, micro bore, as far as I know, (it's 15 years since I was in the trade) there's no difference to the type of boiler, it's the way the water is fed to the radiators, on micro bore the 22mm flow and return pipes on the boiler go to manifolds and then there's a microbore pipe to each radiator so as each rad has its own flow and return the pipes can be smaller. On the other system the flow and return pipes feed more than one rad start out at 22mm then reduce down to 15mm for the last 3 or 4 depending on the size of them.
Microbore can be easier to install as the pipes can be threaded in like cable with no joints and some other reasons which I can't recall? hope this helps.
EDIT........... both these systems need to be designed to prevent pump overload i.e. all the valves are closed and the pump is running.
Microbore can be easier to install as the pipes can be threaded in like cable with no joints and some other reasons which I can't recall? hope this helps.
EDIT........... both these systems need to be designed to prevent pump overload i.e. all the valves are closed and the pump is running.