Power flush or not!!!!!!!!!!!!!!!

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We have had a new boiler fitted into our home. We have had the system changed from a back boiler/ tank system to a condensing boiler. We have had some issue's with the installer about power flushing the sytem. He has not done one as he said it does not need doing. Can somebody please tell me if this is correct. Is it a costly job to do? Also where the flue comes out of the wall (we have had boiler fitted into the loft) does this need a grommet or some sort of covering. It looks a tight fit from ground level but am concerned about water ingress. Many thanks.
 
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definately needs flushing and preferably a magnaclean/boiler buddy too. get it flushed or long term you'll have problems. . . .
 
Flue should be sealed PREF with mortar. Powerflush is not essential .Alot of people will tell you it needs doing purely to get money out of you .
Every system should be judged differently .
 
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SO can the two of you please tell me how you know the system needs powerflushing without doing a water test or seeing the colour and condition of the water that came out of the existing system and what condition it was in after the installer probably done the cold and hot flushes
 
SO can the two of you please tell me how you know the system needs powerflushing without doing a water test or seeing the colour and condition of the water that came out of the existing system and what condition it was in after the installer probably done the cold and hot flushes

open vented system on a bbu. that's all i need to know.
 
Just going on my experience of going to numerous glow worm cxi and the like that are about 3-4 years old and completely blocked with sludge after being put on old back boiler systems.....and best practice from BS7593:2006 code of practice for treatment of water in domestic hot water central heating systems....

Cheers Jard
 
Just going on my experience of going to numerous glow worm cxi and the like that are about 3-4 years old and completely blocked with sludge after being put on old back boiler systems.....and best practice from BS7593:2006 code of practice for treatment of water in domestic hot water central heating systems....

Cheers Jard

Agree with that.
 
Can somebody please tell me if this is correct. Is it a costly job to do? Also where the flue comes out of the wall (we have had boiler fitted into the loft) does this need a grommet or some sort of covering. It looks a tight fit from ground level but am concerned about water ingress. Many thanks.

Have you recieved a work notification certificate from Corgi.?
 
Dangermouse by your own admission you have not seen many backboilers and why would a properly installed and inhibited boiler on even on an open vented system have sludge problems.
You have fell into the BG trap of thinking a powerflush is required on everything
Celtgas is that not the gloworm that is suspected of having a design fault and plate are blocking in less than a year?
Ollski who posts on here mentioned it a few times
 
So why would it need flushing . Purely , guess work the only person who can answer that question correctly is the guy on site.
 
So why would it need flushing . Purely , guess work the only person who can answer that question correctly is the guy on site.

as a general rule of thumb i would say it does especially if a combi installed.
 
Water doesn't have to be dirty to corrode or block up a HEX it only requires a high PH (8.5 Alkaline) to do in a Aluminium HEX or a low PH (5.0 battery acid ,system full of flux) to do all sorts of damaged to a system ,rads pinholing for example.
 
Which is why installer should follow manufacturers instructions on completion of job and cleanse it and hot and cold flush it then inhibit so water in system is then non aggresive

5 years ago when you looked at these web sites BG where getting slagged to death regards powerflushing and its actual need.
Amazing how peoples now claim its the best thing since sliced bread it would have nothing to do with the fact its an easy £300/ £400 and saying your saving £200 on what BG would charge.
Surely not :rolleyes: :rolleyes:
 

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