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Nope no problems for 25 years, apart from the boiler gradually giving up the ghost. Looks like a vast majority of installers are unable to think for themselves and anyone that doesn't agree with them must be an idiot. The fact that a system was working for 25 years without problem doesn't...

manometer: Device for measuring pressure, originally using a column of liquid. What term would you use? Or are you referring to the word "Connection".

On the flow side of the boiler as close as the fittings would allow.

Not concerned that they were lifted or not.

Please explain

No faults, the system had been working well for 25 years. The messed up pump was the one the installer had fitted, well it was the second one 'cause he had put an automatic air vent vertically above the first pump he installed and the air vent leaked. Please specify the original fook up...

Please read carefully. The original rads were fine until the cowboy got to work. There was so much crud in the system from the pump over that there was a danger that the rads would end up with pinholes very soon. Black sludge == ferrous oxide == the insides of the rads. Ok so you needed the...

Please read the previous post. Oh I forgot, that is a problem ...... :D

Glow Worm Space Saver 45-60B There is an issue when the circulator is not connected to the boiler (to make use of pump over run and frost protection). There was also an issue that it blew up the switches in the valves. Probably a manufacturers cost reduction exercise. 'S' Plan, 'Y' ...

Do plumbers have problems with reading, like the guy that messed up the boiler install for me? Original, ie 30 years ago specd and fitted by me. Replacement boiler 5 years ago that lasted less than 18 months till the first serious fail was specd, supplied and fitted by the installer. No...

You would lose. The original installer was myself. in the days when I was a lot fitter and nimbler than now. Though I must admit I did get a reduction from the wholesaler who supplied the kit.

When did I say I knew it all? Certainly not clueless, eventually picked up sufficient additional knowledge to know what the installer had done wrong, though he couldn't see his mistakes. I suppose you know it all, like the installer I used. Because I knew there had been a lot of changes I...

Let's get this straight, I installed the original system 25 years before this so called expert changed the boiler. This was the second heating system I had installed. The first one is still running, albeit with a change of boiler so the rest of the equipment must be over 35 years old now. And...

The sensors seem to be thermistors on the input and output pipes therefore no flow = no detection. Will eventually detect but too late. If what you say is true then why did my boiler bang and crash. Explosive boiling due to lack of flow I suspect. The very thing that pump over run is meant...

But you still didn't answer the questions. Not lucky with court, just an open and shut case and no defence other than it was a long time and he was a professional engineer(!) and fully qualified.

Thanks Agile, The microswitches were rated at 3A and the pump would probably have taken .8A - 1A when running but the inrush current when switched on would be several times that and the inductive spark when switching off probably destroyed the contacts. As you say the old way was to switch...

Yes I know now that it could have been resolved easily but then I am not the alleged expert. It should not even have got to court, the installer should have rectified it but he just walked away, probably because he had run out of ideas. As you say the original installer was a prat so what...

After being hammered previously about my actions is there no one willing/able to make a comment about this "professional" installer's abilities?

And now for some input from you guys in the trade who have been having a knock at me. The plumber gave evidence in court that the microswitch on installed Horstmann zone valves kept failing but he replaced them as required. This was not only for me but for several other customers. It...

I agree, easily corrected IF you know it is wrong. The installer didn't know it was wrong, it was only me, as the customer, investigating after hints from others that identified the problems. He admitted that he had not wired the pump to the boiler because that was not how he did it with the...