This is what my CH sounds like...

http://homepage.ntlworld.com/mike_wh...r/clips/ch.wav

It is quite loud. It is not a gurgling air sound. But more a rushing
around like billio sound!
I've got a setting to reduce flow, but it is supposed to be self regulating
anyhow.
Boiler is brand new combi and whole system has been flushed and I'm
confident that it was done well.
Is a noise reducing additive going to be useful? What else do you need to
know?
15mm copper with 22mm from/to boiler and between floors.

--
Mike W

visionset wrote:


This is what my CH sounds like...

http://homepage.ntlworld.com/mike_wh...r/clips/ch.wav

It is quite loud. It is not a gurgling air sound. But more a
rushing around like billio sound! I've got a setting to reduce flow,
but it is supposed to be self regulating anyhow. Boiler is brand new
combi and whole system has been flushed and I'm confident that it was
done well. Is a noise reducing additive going to be useful? What
else do you need to know? 15mm copper with 22mm from/to boiler and
between floors.

Call in the installer. It's air the whole system needs to be bled.
Expansion chamber to low?

--
zaax

In article ,
visionset wrote:

This is what my CH sounds like...

http://homepage.ntlworld.com/mike_wh...r/clips/ch.wav

It is quite loud. It is not a gurgling air sound. But more a rushing
around like billio sound! I've got a setting to reduce flow, but it is
supposed to be self regulating anyhow. Boiler is brand new combi and
whole system has been flushed and I'm confident that it was done well.
Is a noise reducing additive going to be useful? What else do you need
to know? 15mm copper with 22mm from/to boiler and between floors.

If it is really brand new it might settle down after a few days. When I
refill mine after maintenance work which has required a drain down
therefore fresh water it is noisy for a while despite thorough bleeding.
IIRC, water contains air in suspension for a while.

--
*Why are they called apartments, when they're all stuck together? *

Dave Plowman London SW
To e-mail, change noise into sound.