C
cava55
Hi all looking for some advice on this bosh Worcester 24 sealed boiler fitted in loft all been ok until builder employed a so called plumber to put another rad in a new room. He put 10 mm pipe hidden in the wall run of a 15 mm pipe feed from a 22mm since this rad was changed t does not get hot fully, all so it takes a long time for the front room rad to get fully hot. The up stairs rads are all so hot that you cant touch them !, the pressure gauge on the boiler has all ways been about 1 bar cold and around 2. 5 bar when working hot water. The gauge when operating heating rises so high it around 3 and some times in the red at 4 bar, we have also see the gauge showing that system needs water when cold could It be air in system or does it need balancing ? any ides great fully received as sacked builder an I m8 !.
