New Boiler Cleaning System

Status
Not open for further replies.
Steveb1964, it seems from what I've seen - though others will disagree:
All older systems have SOME grot in them.
Some are remarkably cleaner than others. Probably due to combination of good design, correct flux, cleaning filling and emptying after installation, good quality inhibitor use and replenishment. But it's very rare to have the installation info available in that much detail to do really objective comparisons.

I have often shoved the mains through a system before doing anything else. That does give a good idea of how dirty the system is, very quickly. Sometimes it all comes out clean within 20 minutes, with just a couple of minutes per rad. Then you have to look at your powerflusher and wonder how much any further effort is going to yield. SOmetimes half an hour per rad isn't enough though - bash the rad and more dirt comes out every time.

It IS worthwhile making sure the rad isn't being bypassed by the boiler or HW cylinder, which may mean adding a couple of extra valves. SOmetimes you can just shut a pump valve or rely on S plan 2 ports to be shut. You cannot flush through a drain cock! Also rad valves aren't very good, and trv's are the worst - holes can be tiny.

Power flushing/ chemical flushing aren't mutually exclusive - you use chems in powerflushing!. We've all come across systems which had sludge in where putting chems in, running for a week or two, followed by emptying and refilling, leaves all the downstairs radiators not working! For those Fernox DS40 or Kamco FX-2 are your only hope, without mains or power flushing.

Given the chance we'd all love to run a system with chems for a week or four before power flushing, but if that isn't possible you have to use chems designed for a 1 day Pflush. X400 takes longer than they say - like 4-6 weeks. Otherwise dirty sytems will not come clean.

Reversing, easier with a machine, does lift the sludge well. I've seen a demo with a perspex "rad" which was impressive.
Mains is useful for shifting the mobile grot out, Powerflushing is better for circulating chems to act on stuff which won't come straight out.

Getting the rads outside, inverting them when 1/3rd full for 5-10 minutes, until the water comes out clear despite whacking them, appeals to me. Flow from end to end can bypass grot, but inverting does at least try to shift it.

Systems which have always been sealed tend to be far cleaner than old ones which have been open. I've never seen a sealed system be very dirty, though I daresay others have. COmbis clog up on a whim though.

Remember Fernox claim you can get "up to 80%" of dirt out of a system. 20% of what some old systems have in them would kipper a combi in no time at all. If you're changing an old cast iron lump of a boiler in an open system to a new combi, and the rads are 30 odd years old, replacing them isn't a bad idea.
 
Sponsored Links
Querty now likes to rubbish professionals in the heating business however only a month ago he knew nothing according to his own words:-

""" Posted: Tue 14 Feb, 2006 11:03 pm Post Subject:

--------------------------------------------------------------------------------

i can do general DIY but haven't a clue when it comes to plumbing! I think i'll leave the cleaning of the sludge to you professionals! """

Its dissapointing that he asks advice and then is abusive to people who try to help him. Even stooping to posting libelious statements!

Tony
 
Agile,

I believe that the "libelous" posts to which you took offence have been deleted. You reputation remains unsullied !!
 
Sponsored Links
corgiman said:
mmm, I am very aware of agile in a professional capacity i know that he is highly respected in the trade, and his opinions are sort by all professionals within the industry

whereas you are a tit, qwerty

nuff said
:LOL: you should see his mate...UIOPA.even worser
 
people must be taking notice, look at the number of views and replies!

how can you trust someone who post's on one website

'powerflushing is just a show for the customer'

then on here says it's essential. hmmm he's not trying to make extra money out of people :LOL: ;) :LOL: ;)
 
hi, guys. Is there a current British standard for powerflushing which tells you the procedure and a standard of cleanliness that should be achieved or is the standard for cleanimg and flushing still Bs5449 might be wrong number though that states mains flush minimum of 3 times to remove all solid objects. Only interested because my system is due for a good rinse. :?: :?:
 
qweerty go away you sad boring little t i t

where is this magical web thing on tony anyway
 
laughing-smiley-014.gif
laughing-smiley-014.gif
laughing-smiley-014.gif
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Status
Not open for further replies.
Sponsored Links
Back
Top