banging boiler/pipes

[m.armiger]

Baxi Bermuda W2. If I put the gas water heater on the tank rumbles & bubbles noisily to start, then when the water is hot the pipes or radiator upstairs (not sure which) clang as if being hit by a pan! Doesn't happen if I have hot water and heating on together! Confused!

 

[clf-gas]

Sounds like airlock and/or pump problem.

 

[gas4you]

Have you got gravity hot water or fully pumped? Sounds like gravity to me and you have a blockage. When pump kicks in for heating excess heat is taken out of boiler.

If you have fully pumped then possible zone valve on hot water fault.

 

[m.armiger]

Have read the definitions for gravity and fully pumped and have no idea!! Just a useless female see!

 

[gas4you]

No females are useless

 

[corgiman]

No females are useless

cept for Miss Tullaluha Useless Winner of "Miss Useless Cow" 1996

now she was useless

 

[gas4you]