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You've explained before how they get over it but no-one can convince me that they meant to design an open vent boiler where you have to divert the flue because it's path interferes with the F/R connections. Anyway my point on this thread is that IG want too much money for the combi models. As...

Mr Centralheating rads will be OK if you have a sealed system. For open vent I'd suggest UK rads.

I like Intergas even with the shortcomings already mentioned. But there are two inescapable facts that make them hard for me to sell. At nearly £1K cost for a 28kW combi that my customers have never heard of, it means I have to fit it for less to stand a chance of an order. Secondly, the DHW...

No, I'm saying that with waterways as narrow as a few mm as well as other design features, that heat exchanger is easily blocked. Systems piped with microbore are also hard to flush.

You can flush it for 3 hours or 3 weeks, it'll make no difference, especially with microbore. If the system is dirty, you'll never get it clean enough to offer a long, blockage-free life to any Vaillant (Giannoni) heat exchanger.

May not have been as expensive as it might be now, had you dealt with it when you first noticed symptoms a month ago.

You simply cannot install these boilers on anything other than a clean system. The level of cleansing required on an old system is, in my opinion unachievable for the level cleanliness required. Unless of course you're lucky enough to have little or no debris in it to start with.

It should be out in time then. I insist on full services only and let the customer choose every year or every couple.

Only consider oil if you intend to have a 'regular' heat only boiler. All oil combi and system boilers are not fit for purpose.

Have a few of these type installed now. They're OK, HW delivery is very good, with enough mains, especially on the 29. However I think the price is about right. Heatlines are cheaper and I would argue their components are dearer (apart from the pump), though they probably buy them well. I...

I'd wager Intergas have never made such a declaration, indeed the problem with OV fluing is not covered in the MI's, so their advice is word of mouth only - hush hush, under the carpet, cement it in the wall, customer won't notice etc... I promise I'm not having a go Dan, far from it. Your...

That reads like a euphemism for bending the rules. Why is that OK for covering up for Intergas' non-approved application but not for CET's?

Telescopic is not deemed as a flue joint for the purposes of the new rules. The offset flue join is. I don't believe someone of your standing would try to explain it other than as a design **** up.

It's naughty because like you say about CET, they have no approval to do so. It's an afterthought borne out of the fact that someone ****** up when designing the F/R connections in the path of the standard flue route. My point is, by the high standards you set, you should refuse to deal with...

Dan, you've made your position and the safety principles you follow clear. Nothing wrong with that. However in the interests of balance and consistency, I'd ask the following about a manufacturer dear to your heart. How do Intergas get away with approving the use of a concealed flue joint...

In any case, as stated in my earlier post. I don't offer them to my customers only a select few friends and family. I know their boilers and usually what part of the board has failed. Eg once had an Ecotec where the mains-in on-off connection was faulty, another that wouldn't send power to the...

Is that a design fault? If so the customer will want to have you if you didn't make it known, new board or not.

The only time I've ever known a PCB to become dangerous is where water has dripped on it or when someone replaced a milliamp with a heavy amp fuse. Otherwise they've all simply stopped the boiler working. I'd worry far more if there were repaired gas valves, high limit stats, PRV's or T&P valves.

They would have settled in a 'Without Prejudice' style compromise. You won't get a manufacturer to admit 'guilty mate how far would you like me to bend over?' I've claimed myself but have some experience dealing with and defending my employer from very large claims. Without going into...

Dan, I don't doubt your ability in the trade, but you are showing your naivety in the ways of the world. When it comes to paying out, the people you want to settle your bill are not plumbing and heating pro's or anything to do with our trade. They are hard nosed, faceless snakes who'll tie...