Hello, just joined up because I would like to get some advice from someone experienced with these boilers as I come into regular contact with them (i am a newly qualified gas safe engineer doing LGS and boiler servicing). Simple question, how to adjust the burner pressure when the gas valve is the type with the burner adjustment screw located on the top of it and totally innacesible. Is this bad design or am I reading the manual wrong?
thanks
G
thanks
G