Sadly agree. Step 1 - IT director (nee salesman) hires 'consultant'. Step 2 - Consultant becomes cheerleader for director while not really understanding project team's concerns. Step 3 - Project team no longer with a voice, resort to playing buzzword bingo during meetings. Step 4 - Consultant walks away with about 50% of project cost in 'fees' shortly before sh*t hits fan. Step 5 - Project team get cut, remainder blighted, as they must be to blame.
Making sure that the gas pipe does not pass too close to electric cables, and that it is protected from brick and plaster where it passes through walls etc.
The flues on modern combis I've installed were a doodle to get right. The install instructions were very clear. (I guess they have to be for the average muppet that fits them)
I installed my 1st CH system >25 years ago. It was quite a common DIY thing then. There were books that told you how to do it. I reckon a conscientious and knowledgeable DIYer has every incentive to do a super safe job in his own home, its him who is going to be harmed if its done wrong. That why I started in DIY many years ago. I just wasn't satisfied with the quality of tradesmen's work. It seemed I always had to go round checking upon and correcting what they'd done. Just came across another example when I changed my fusebox to a CU. The neutral meter tail in the orig hadn't been tightened thoroughly by the installer when the house was new 22 years ago. Consequently the bakelite around the connection was all charred. This was not visible until I took the old box apart.
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