noisy radiators

DilbertJones

kenshaz wrote:

Pipework not clipped down correctly,pump setting could be to high ,on the pump it has settings 1,2,3,just click down on the one it is on now.Put a lubricant and inhibitor into the header tank,that is the small tank,DO not put it into the domestic water tank by mistake. also turn your thermostat on your boiler down.But this one sounds like the pump,which is either to high or on its way out.It could be air,but it will not be in the radiator it will be in the pipes and that takes a lot of bleeding.

where would the pump be? near the 3 way valve?

kenshaz

Yes,but it could be any-where,sorry but if it is not part of the boiler set-up.

kenshaz

robodan wrote:

where would the pump be? near the 3 way valve?

Sorry it would be near the motorised 3 or 2 way valve on a conventional system,with an indirect cylinder

i-luv-free-stuff

kenshaz wrote:

The pump is an actual unit not a gauge or control,it has a little switch on the side of it,could be in the casing of the boiler ,on a combi,or might be elseware in the system,do not mean to patronise not sure of your level of knowledge.

lol not patronising at all!
my knowledge is virtually nil!

i-luv-free-stuff

would it be the pump if it was just making noise upstairs?
the downstair radiators dont make any noise.

i-luv-free-stuff

kenshaz wrote:

If it is a Combi boiler you have no tanks,but you still have a pump,is the pressure in the system OK,a little gauge on the boiler,has a red section that the pressure must not go into.
Find the pump and lower it ,resistance against the pressure causes vibration

sorry for going back a post or 2 but the red needle on the the gauge is movable and the black needle is currently on 0.8 bar.

kenshaz

i-luv-free-stuff wrote:

would it be the pump if it was just making noise upstairs?
the downstair radiators dont make any noise.

That is possible because,part of the system might work without the pump for example on gravity feed ,the pump is there to give that extra movement,therefore you might have the extra pressure that the system does not need and it is finding the upper resistance upstairs,wish I could see it

kenshaz

The red needle is what the black one, should not be above,different boilers have different pressure settings,when you allow pressurise water in to the system it increases the pressure and the black one moves up,when you bleed a pressurize system the black one will go down,do not get bogged down to much with that gauge .

i-luv-free-stuff

ok kenshaz
thanks for your help but i dont think we going to sort it. :0(
just one more thing..my other half reckons it sounds like the metal radiator (or pipe) expanding with the heat...could this be when the hot water is pumped upstairs every few minutes and should it be so noticable?

ariba10

It is probably the copper tubes expanding and contracting with the change in temperature as the thermostatic valves open and close on demand.