Hi there i am pulling my hair out with this one i have a baxi 552 boiler the problem is i have 2 pipes run down the side of my fire place they make an awfull almost like kettling sound at anytime of the day, the heating does not have to be on for these to go off. I have drained the system, bled the radiators and also treated the system with fernox. the other pipes ie under the floorboards are fine and make no noise what so ever it is only the 2 that run down beside my fireplace. I have had an engineer come out and service the fire and he said that it was traped air in the system. I would be very greatfull to anyone with some suggestions on this case
thanks

"bush1207" wrote in message
...

Hi there i am pulling my hair out with this one i have a baxi 552 boiler
the problem is i have 2 pipes run down the side of my fire place they
make an awfull almost like kettling sound at anytime of the day, the
heating does not have to be on for these to go off. I have drained the
system, bled the radiators and also treated the system with fernox. the
other pipes ie under the floorboards are fine and make no noise what so
ever it is only the 2 that run down beside my fireplace. I have had an
engineer come out and service the fire and he said that it was traped
air in the system. I would be very greatfull to anyone with some
suggestions on this case
thanks


--
bush1207
I have a Baxi boiler that has a pump over run , which runs the pump after
the boiler goes off to stop it overheating when the boiler cools off then
the pump stops , but mine presently has a faulty circuit board and the pump
runs continuous even though the heating and water are switched off could
this be the same fault

On Wed, 14 Dec 2005 13:51:08 +0000, bush1207 wrote:


Hi there i am pulling my hair out with this one i have a baxi 552 boiler
the problem is i have 2 pipes run down the side of my fire place they
make an awfull almost like kettling sound at anytime of the day, the
heating does not have to be on for these to go off. I have drained the
system, bled the radiators and also treated the system with fernox. the
other pipes ie under the floorboards are fine and make no noise what so
ever it is only the 2 that run down beside my fireplace. I have had an
engineer come out and service the fire and he said that it was traped
air in the system. I would be very greatfull to anyone with some
suggestions on this case
thanks

I wonder if you have gravity HW?
As time goes on the thermostats on these models get less sensitive and the
running temp may have increased. Try turning the boiler thermostat down
and see if things still work.
A product that may help is the Boiler Noise reducer (by fernox and IIRC
Sentinel do they version) this is distinct from the X100 or MB1 inhibitor
which often goes by the name "fernox".
At the least the noise reducer will change the kettling to dull thuds.

If the system is working for heating and HW then I doubt that trapped air
is a problem, otherwise trapped air could be the cause.

HTH
--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html