Setting aside any preference for copper or plastic.
What Hepworth actually state on their website is
“Hep2O® has a design life expectancy of 50 years, which is based upon the operating conditions given in Table No. 1.
As a result of its rigorous Quality Management Programme Hepworth...
If correctly installed, the feed from your header tank to your cold taps will be at a lower level than the cold feed to your hot water cylinder. The hot would therefore fail before the cold.
I suggest that you physically check the header or run the cold for a while (if access difficult)...
You could discuss the temperature drop with Invensys.
http://www.invensyscontrolseurope.com/NR/rdonlyres/8850B04F-5323-48E3-BD8B-B33ADB04A2E5/7139/D348v2.pdf
Softus wrote
You could have put forward the argument that Crystal’s post is misleading on that basis, but not that ”Crystal is trying to mislead”. You would have to know Crystal’s mind to sustain such an argument.
Softus wrote
mike.braund wrote
Softus wrote
ad hominem comment is...
Softus, what justification do you have for stating
?
mike.braund has stated that he has forgotten to remove X400 from his system but will now drain and refill using an inhibitor, which is what I would do under such circumstances.
I consider that alarmist statements such as...
raden wrote:
"And as I pointed out a while back - now illegal to dispose of pcbs in such a manner under WEEE"
Not so. The WEEE Regulations have yet to be implemented.