you never know your heat exchanger might be on his way out
, you better do that GAS RATE
. and report back with results . just looking at your manu's aint going to cut it . oh by the way ; why is vaillant lying in your other statement ???
How do the manufacturers work out the 35 degree rise incorporating the gas rate?

you never know your heat exchanger might be on his way out, you better do that GAS RATE
. and report back with results . just looking at your manu's aint going to cut it . oh by the way ; why is vaillant lying in your other statement ???

How do the manufacturers work out the 35 degree rise incorporating the gas rate?
Physics dear boy, physics.
There could well be a problem as it hasn't been serviced for a fair while that's why I am paying to get the boiler serviced.
Are you referring to Vaillants lie about their 824 only being an 823?

Yes thanks![]()

There could well be a problem as it hasn't been serviced for a fair while that's why I am paying to get the boiler serviced.
Are you referring to Vaillants lie about their 824 only being an 823?
just re read what you said , thought it was something else you was talking about my mistake , the only we are going to tell how your boiler is running is do a gas rate( from behind a screen ) . why haven't you done a gas rate ?, you don't have to look far , thats the second tip I've given you . i bet you wish you didn't give any attitude now .![]()
Yes thanks![]()
And you call me arrogantYou don't have a clue do you!

Yes thanks![]()
And you call me arrogantYou don't have a clue do you!
That's output.
At least I have the courtesy to say please and thank you.

What's the gas rate at 7l/min?

For an engineer you're none too bright.
A formula is used. This formula has 2 variables and a constant. No use giving 1 variable in order to get answer unless you want to fart about putting random numbers in.
Give a gas rate and get an answer simples.
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