Hi Everyone
Vokera HE Boiler Installed last year been running fine - 3 bed - 7 rads.
Just had a radiator moved for room re-arrange. The plumber said there was no reason to drain down the whole system - he isolated all rads at both ends then - cut the pipes - did the business - re-connected.
When it came to re-filling he bled the rads then opened up the boiler and said "I always do this"
He unscrewed the giant screw on the Grundfos pump. I didn't see much evidence of any air coming out only water.
Worried, could he have been letting air in?
I said "Dont these autovent?" He looked like he'd never heard the word.
Now every time the boiler fires up or stops burning there is a hissing sound coming from the boiler like a steam train 'SSSSSSHHHHHHHHH'
Never heard this b4 something has changed.
But what?
Ta.
G.
Vokera HE Boiler Installed last year been running fine - 3 bed - 7 rads.
Just had a radiator moved for room re-arrange. The plumber said there was no reason to drain down the whole system - he isolated all rads at both ends then - cut the pipes - did the business - re-connected.
When it came to re-filling he bled the rads then opened up the boiler and said "I always do this"
He unscrewed the giant screw on the Grundfos pump. I didn't see much evidence of any air coming out only water.
Worried, could he have been letting air in?
I said "Dont these autovent?" He looked like he'd never heard the word.
Now every time the boiler fires up or stops burning there is a hissing sound coming from the boiler like a steam train 'SSSSSSHHHHHHHHH'
Never heard this b4 something has changed.
But what?
Ta.
G.