Noisy Boiler

jul33y · 7 May 2007

Hi, my boiler bangs when it comes on and someone said it was sludge build up in the heat exchange.

I have a sealed/pressurised system. And was going to inject into one of the rads some stuff called System Silencer?

Should I do this and do I need to drain and refill the system after its been in there for a bit, or does it stay in the system?

I have never drained a sealed system - is thiis simple or do I need the experts...

corgiman · 7 May 2007

what boiler is it??

give us a chance?

gas4you · 7 May 2007

Could be sludge/scale, but have you checked the basics as i is the pump running correctly. Banging is usually a sign of lack of flow through the boiler.

If you bleed your rads is the water clean or black/rusty or like treacle? If so it needs a thorough clean out using a cleansing chemical instead of a silencer chemical. Use a good cleanser from fernox or sentinel and follow M I's. Afterwards flush through with clean water and then drain down, add inhibitor on final fill

Very easy to drain/fill on a sealed system

gas4you · 7 May 2007

corgiman said:
what boiler is it??

give us a chance?

Bl**dy hell corgi, you're fast tonight

jul33y · 7 May 2007

our boiler is an ideal minimiser. there is a new pump and valves fitted as the system was adjusted 2 years ago when an extension was built. up til then it was quiet. its never been right since.

jul33y · 7 May 2007

forgot to mention that the water is clear when you bleed the rads

gas4you · 7 May 2007

You are one of the lucky ones if you have a minimiser that is still working

Treat it with kid gloves, it won't last much longer

jul33y · 7 May 2007

oh dear! that sounds scarey

gas4you · 7 May 2007

Yet another c*** boiler from Ideal. May last a few years but would suggest you start saving your pennies

jul33y · 7 May 2007

sooOooo is it worth putting this stuff in the system to try to stop the noise, or would it be better under the circumstances (nasty boiler) to get a boiler man in??
we are willing to have a bash at draining the system after putting the silencer in or will we just make it worse!?

corgiman · 7 May 2007

jul33y said:
sooOooo is it worth putting this stuff in the system to try to stop the noise, or would it be better under the circumstances (nasty boiler) to get a boiler man in??
we are willing to have a bash at draining the system after putting the silencer in or will we just make it worse!?

if its only doing it on start up then no it aint worth it

it probably needs a service, beaware servicing this is a beeeatch and takes about hour and half!!

I hate them with apassion and they are as bad as the lads say

gas4you · 7 May 2007

Try it your self. Follow M I's and see what happens. You can always call in a CORGI if it doesn't work afterwards

corgiman · 7 May 2007

gas4you said:
Try it your self. Follow M I's and see what happens. You can always call in a CORGI if it doesn't work afterwards

but it cant be the system gas or it wouldbe kettling and banging once it starts to heat up

sounds to me like muck has got on burner and the boiler is suffering from explosive ignition like these heaps are prone to

jul33y · 7 May 2007

thinking about it, it is only on start up (been woken up at 6am every morning for two s****ing years!)
so shall we just have a service and forget about the silencer/inhibitor??

gas4you · 7 May 2007

True, just trying for the cheapest answer for op.

Do as corgiman says and get in a good local corgi. You may have to try a few as not all will touch these boilers

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