How I can refill the pressure in my boiler?

Hava a quick Google search for the installation manual. It should be eady enough to find. Have a read.

You MIGHT need to buy a filling loop but some boilers have this buiilt in.

You could akso see if there are any videos on You Tube, which show the general principles, if not your specific boiler.

One question; what is "like 8 tubes"? Is that 7 tubes or 9 tubes, or did you actually mean "8 tubes"

xxx
November 2016