Co2 readings

[Aquilani]

Hi all.

I'm after some understanding of the measurement of C0 and C02 in natural gas boilers.

I'll list some questions and look forward to any help.

What would cause C02 is to be to low? (wont adjust any higher)
What would be the cause if the CO2 was to high?

Each boiler manufacturer now lists min and Max CO2 but what about those that don't, for example Alpha and older boilers?
What should the co2 be or what should the PPM be?

Thankyou in advance.

 

[Agile]

Now why on earth would a DIYer be asking those questions?

Perhaps you are on some kind of course?

In that case surely you will have a tutor who is the best person you can ask. He will see where your knowledge is lacking or where his teaching is lacking.

Tony

 

[Aquilani]

I'm going on a course and did not want to go in without doing some research first. Thought maybe someone here might have some understanding.

 

[Agile]

Many of us do have some knowledge as its part of the FGA tests we have to make on modern boilers.

You are not very forthcoming about your course are you?

Tony

 

[45yearsagasman]

You are trying to run before walking.You need to know about the combustion process and appliance design before understanding the co/co2 aspects.All will become clear during the course.

 

[Agile]

If I was your tutor, I would consider my course was comprehensive and that if you had any questions that you should ask me.

I would be less happy if you were preloading information which might be out of context or even incorrect.

Teaching is rather formulaic and relies on the information being provided in a certain sequence so that each additional part builds on prior learning.

Tony

 

[Aquilani]

I asked some simple questions, I was not looking for a lecture, if you dont know or your worried about my angle then dont post.

 

[Boilerman2]

Unfortunately although a simple question the answer is somewhat complex as has been said it will be best to ask your "course" tutor, who will be able to answerr using visual and practical aids it would be impossible to answer on this kind of forum as CO2 values vary between fuels and differing combustion equipment fitted to various boilers

 

[transam]

On a course ? what are you doing ??? interested !!

 

[Aquilani]

On a course ? what are you doing ??? interested !!

CPA1

 

[linkyplumb]

As you are doing CPA1, one assumes that you are Gas safe.If so join the combustion chamber, where most engineers will be happy to talk about the questions you raise.

Graham

 

[transam]

Flue gas analyser's & the use of them , most of the imfo & standard's used today were due to the r & d carried out by british gas in the 80;s & early 90's by the than British Gas ( I think) bg carried out research & found that approx ' 20% (?) of all boiler's they serviced would suffer some type of breakdown or malfunction shortly after ward's ?? this was put down to complete strip down's ect ? away of checking boiler's in a lessinvasive way was required hence the development of fga's they there fore determined that the co to co2 ratio would determinehow far a boiler needed to be stripped down ?? as this ratio is relevant to the combustion quality !! 45 years a gas man may (or may not ) comfirm any of this ??

probably not what you are after but ???????

 

[Aquilani]

Flue gas analyser's & the use of them , most of the imfo & standard's used today were due to the r & d carried out by british gas in the 80;s & early 90's by the than British Gas ( I think) bg carried out research & found that approx ' 20% (?) of all boiler's they serviced would suffer some type of breakdown or malfunction shortly after ward's ?? this was put down to complete strip down's ect ? away of checking boiler's in a lessinvasive way was required hence the development of fga's they there fore determined that the co to co2 ratio would determinehow far a boiler needed to be stripped down ?? as this ratio is relevant to the combustion quality !! 45 years a gas man may (or may not ) comfirm any of this ??

probably not what you are after but ???????

The taking of the measurement is straight forward, it's how the results should be interpreted that I need to work on. Hence the course entry. I guess a copy of the Bs 7697-3 would be helpfull.

 

[CMairiD]

If you are looking for copies of British Standards, look into your local library. Some libraries have access to the standards and some even have web-based access which you use from home.

 

[Boilerman2]

To sugest that FGA's were developed during the 80's & 90's very misleading !! there have always been FGA's my father was using Fyrite and Bacharach equipment in the 1950's Combustion analysis is not new ask any oil boiler specialist it is the advent of premix gas burners which have to be set up like an oil fired boiler that has led to the explosion in popularity of FGA's as previous atmospheric burners had little control over excess air, so the only tool needed to commission one was a "U" tube!!!