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Anyway back to the topic in hand @TCCHeating I noticed you completely avoided my question about the less than manual specified flow rate. You don't actually know do you? And you call me a muppet! :mrgreen:

I can't see any other explanation. Fresh air is not as clean as you think. The previous owners smoked like chimneys in the house as well. Everything was yellow and horrible.

^^^ That is a comment. Fair play you take stupidity to a whole new level :mrgreen:

If you don't give a **** then why are you commenting?

One of the clips for the front panel is broken which means the whole panel can move back compromising the seal. I didn't find the broken part so who knows how long it's been like that for. The BG engineer obviously missed it. I thought you'd say that. You can see staining from where air...

Yes because the room seal of the boiler is compromised.

It's working spot on (y) Although I have noticed something with it that is really dangerous that the supposed 'RGI' missed when he serviced it.

If my boiler was achieving a 35 degree rise but only at 6 l/min then there would definitely be something wrong with it.

What do you do if the flow rate isn't what is specified in the boiler manual?

I'm just interested to see what happens in the real world but it appears nobody knows the answer. I just assumed you guys would do this kind of thing to check out how a boiler is functioning.

Do they achieve their stated rise though? When new or in good order?

Why is it irrelevant? It's got to be a good indicator of boiler performance which is what this forum is all about isn't it? I don't proclaim to be an expert on gas. I'm just asking a simple question about flow and DHW temp which nobody seems to be able to answer. Do they normally achieve...

As I've already said about 10 times I don't touch anything to do with gas (y)

No you haven't. What results have you seen on a 24kw boiler? Or any boiler.

You're really don't get it done you. Most instruments tend to go out on their zero but maintain their linear scaling. For example my thermocouple could have a zero error of -1. It would read -1 degrees at 0 degrees and 99 degrees at 100 degrees. It could also have a zero error of +1. You...

1 degree on a 7/8 year old boiler that hasn't been serviced for a while seems pretty good IMO so I'm not worried. The reason for posting was to make a comparison to the results other people have seen. It appears so far that nobody seems to do it though.

Yes of course as it's not calibrated. You can buy them calibrated though and they are normally pretty accurate. Fluke specify an accuracy of +/- 1.1 degrees. It could have a zero error but it will still measure the temp rise accurately. I'm not interested in the actual temps only the...

With the thermocouple on my Fluke.

Very amusing. They're a 35 degree rise at 15.2 l/min. How can you say my flow rate is poor without knowing my incoming water pressure? Another clown joins the thread. :mrgreen:

It's an 824. If it was an 837 the temperature rise would be a hell of a lot higher at 8 litres per minute. I'm sure you can tell me what it should be if it was an 837. (y)