Jezzy - setting gas valves is a fundamental ability you need. Instructions ARE in the manual. A digital manometer makes it a bit easier, but it's the same really.
It says you need a special tool, but I've always managed.
http://www.glow-worm.co.uk/manuals/pdf/Boilers/Compact80E_UIS.pdf
It says you need a special tool, but I've always managed.
http://www.glow-worm.co.uk/manuals/pdf/Boilers/Compact80E_UIS.pdf