WB Greenstar 24i junior - Vibration noise

[cmaruz]

Hi all,
I'm new to the boiler world and this is the first time I have to deal with a boiler.

I rented a flat that has this WB Greenstar 24i junior condensing combi boiler fitted inside a cupboard in my bedroom.

Sometimes at night, I can hear a strange vibration noise coming from the boiler. When this happens, the boiler is off (I mean, no CH nor HW) and a car is passing on the street in front of my flat; when the car approaches, I can hear the vibration noise from the boiler.

This is the sound coming from the boiler (it starts after the first 5seconds):

http://dl.dropbox.com/u/22150844/boiler-bene.wav

I have already called a plumber. He did a check and said that everything was ok. But the noise is still here and wakes me up at night.

What are your opinions?

 

[Agile]

It sounds as if the flue system is resonating with the noise of loud passing cars.

The obvious solution is to ban all cars from the vincinity!

 

[cmaruz]

Thanks for your answer!

It was my initial thought, but I didn't think it was possible. Do you think it can be dangerous for the boiler? And are there any solutions? (while I write to the council to ask to ban the cars )

 

[Agile]

It could well be that the flue is not correctly sealed into the wall.

But without inspecting it closely I cannot comment further.

One wonders what your "plumber" checked. Perhaps a boiler engineer would have been better?

Ask that plumber how and where the flue had been sealed ! I doubt that he will remember as many dont take what they do very seriously.

Tony

 

[cmaruz]

Thanks Tony.

The plumber (sent by my landlord) checked the interior of the boiler and gas pressure.

Would be useful if I post a picture of the flue from the inside? (I don't have an easy access to the outside wall since I'm on the first floor).

 

[Agile]

Doubt a picture would show what is needed.

Should be cemented round flue on outside. Being first floor that may not have been done! Actually a safety issue which should have been noted on Gas Cert but rarely is!

Should ideally be plaster sealed on the inside too. But many just use a rubber gasket instead !

Tony