flushing a system

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Can someone tell me a good procedure for cleaning and flushing a central heating system before changing a boiler
 
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Alfies are you a trainee??

cos you dont half ask a lot of questions
 
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Just new to domestic heating. I served my time on commercial sites on the serious stuff and just looking for some tips.
 
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depends

honestly this is rather a large question and while you may pick up some great tips here you are not going to learn the ins and outs of the trade.

dont you have a domestic rgi friend you can go out with?


IMO chemical flush alone isnt that great.

mind you I dont powerflushing is that great either but it is better
 
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With the boilers I use, Powerflushing is reserved for restoring the system itself and then it has to be very bad to warrant the work.

For plate heat exchangered boilers it is more often than not a necessary part of installation and maintenance.

I would strongly advise one or more courses to teach you the ins and outs. Investing in a machine is perhaps something for further down the road - or if you know you are going to be doing one a month or something.
 
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