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  1. T

    Concerning CET recondition pcb's

    You won't get any manufacturer to sit there and go 'fair cop' either. Fixing faults is one thing, but when it's a claim for damage to property or injury to persons you are on your own mate. Your merchant, manufacturer friends and your insurance underwriter will find any way out they can.
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    Concerning CET recondition pcb's

    Dan, I don't know how old you are but responsibility falls on me whenever anything has gone wrong in life. That has been my experience.
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    Concerning CET recondition pcb's

    The trade in repaired parts is a reflection of the industry. If manufacturers want to rob their installers by poaching customers and hiking parts prices to make them uncompetitive then people will continue to forage for what they can get. I find with aftersales work there's better business to...
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    Concerning CET recondition pcb's

    It's the same in most boiler assembly factories I've visited, though that's not usually where the PCB's are made. As it happens I'm struggling to think of any functional part in a modern Vaillant actually made by them. As for CET, I have used them mostly for friends and family boilers and...
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    Concerning CET recondition pcb's

    Dan, when it comes to PCB's, I doubt the genuine articles are made in a factory resembling a Formula 1 constructor's workshop floor.
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    Second hand boiler

    What is an 'Excel' VC? Obviously not an 'Excell'. Is it another Vision/Compact?
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    Concerning CET recondition pcb's

    Does anyone really believe all the national service organisations, insurance backed providers and even manufacturers covering own extended warranty's, exclusively use only brand new genuine parts every time? Because I don't.
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    Potterton Kingfisher

    You've got carbon monoxide spilling into your home and you're more worried about a call out fee!
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    Monarch Midi Meter Water softener

    All water softeners work on mains pressure. Typically up to 6 bar before requiring a pressure reducing valve. The softener is fitted before any cylinder so that has no bearing.
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    Advice Please

    You can get any RGI to carry out a homeowner's safety check (it's the same as a landlord's one) and issue that paperwork. As for GWN/LABC, it's a self certification scheme, the operative word being 'self'. No RGI can approve another's work. We are self certifiers not gas inspectors.
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    Follow up to condensing Combi exemption

    OP - Could VC be correct? I'm usually quicker off the mark but the version of your story that makes more sense to me is that there is no flat, no installer, no Compact SE and the whole thing is a fabrication.
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    Follow up to condensing Combi exemption

    It's taken all weekend but I'll try once more, THERE IS NO CONDENSATION FORMED IN THE COMBUSTION CHAMBER OF A LOW WATER CONTENT, COPPER FINNED HEAT EXCHANGER AS FOUND IN TYPICAL SE COMBIS AND SYSTEM BOILERS. The fan clears POC's and doesn't clear condensate even in a condensing boiler...
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    Follow up to condensing Combi exemption

    From the outset of our argument we have been talking about copper finned heat exchangers. I didn't think I needed to remind you again on every post, but then again perhaps I should have.
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    Follow up to condensing Combi exemption

    Not sure how I can explain his any clearer NON-CONDENSING BOILERS DON'T CONDENSE IN THE COMBUSTION CHAMBER. THERE IS NO CONDENSATION FOR THE BOILER TO DISPOSE OF. Any suggestion your installer has made about controlling F/R temps to prevent condensation in SE boilers is TOTAL B*******...
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    Follow up to condensing Combi exemption

    You can't change it's efficiency. It will modulate whenever it gets close to set to temp, low or high, During modulation it's efficiency drops. Many non-condensing boilers are spot rated and don't modulate at all. You need to set it according to the design of your system. Traditional rads will...
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    Follow up to condensing Combi exemption

    No because it has no premix burner (so air intake not regulated) and the fan doesn't modulate. Hence they are less efficient at part load/modulation. At low stat setting they simply cut out when set temp is reached but the POC's won't drop to dew point during firing as already explained.
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    Follow up to condensing Combi exemption

    You will only get that effect in a long flue as the POC's cool. In the chamber the fins let too much heat through and the gasses cannot condense for long enough to affect the heat exchanger.
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    Follow up to condensing Combi exemption

    Physics would say different if you could get the combustion chamber temperature low enough during firing, but you can't. There isn't enough water content, or surface area in these to produce the necessary cooling effect
  19. T

    Follow up to condensing Combi exemption

    You show me photographic evidence where a low water content, copper finned heat exchanger (as found in almost every combi and system boiler from 1980 - 2005) has suffered from cold water (back end) corrosion due to low or med stat setting and I'll shut up.
  20. T

    Follow up to condensing Combi exemption

    Non-condensing copper finned heat exchanger boilers (the only ones still produced) will not condense unless they have a long or twin flue. On a standard installation the temperature in the combustion chamber won't fall low enough to cause condensation even with the control stat on a low setting...
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