Weil-McLain Gas Fired Boiler?

if you have got a sealed system,no tank in the loft,then you have to put water in yourself through a filling loop until a pressure gauge shows 1.5 bar. this filling loop looks like a braided hose with a tap at one or both ends . turn on untill pressure reads 2 turn off then bleed highest rads if air stops coming out without water , then top up again to 1.5 bar.

combiking
March 2008