Gas Safe boiler failure

[Aquaheat]

No I didn't need to google that, coincidentally it was the reading stated on a print out my Gas safe engineer gave me today, it states 45.3c flue gas temp, 8.47% CO2, (that is near enough 9) so the ratio quoted was 0.0003, so try me next time I could then google!
Oh do you also want a 02 reading, that was 6.1%, which means there was still some oxygen left in the product of combustion, so it did not burn properly despite being 6% oxygen hence it produced 29ppm of CO

What effect does the flue temp have to do with the CO/CO2 ratio?

8.47% is not near enough 9% if the MI ask for 9 then it should be 9! they may allow a tolerance but we work to exacts.

Think you might want to rethink that last statement as well. www.google.com

Thought I'd save you some time.

Jon

 

[Steelmasons]

8.47 CO2%/29ppm yields a ratio of 0.00034.

Are you absolutely positive O2% was 6.1?????

Now think carefully before answering.

 

[Aquaheat]

Hey Mike do you mind if I pick your brains? Got a boiler with 29ppm CO along with 9% CO2 in flue gas , I need to know ratio?

TIA

less than 0.0003 how about that?

.00032 to be anal , so a little higher wouldn't you agree.
100 lines and 1 hours detention.

Well done.

If we're being anal it's 0.00032 recurring lol

 

[Aquaheat]

Bye then @Mikefromlondon it's rude to just leave without saying goodbye x

 

[Steelmasons]

Oh do you also want a 02 reading, that was 6.1%, which means there was still some oxygen left in the product of combustion, so it did not burn properly despite being 6% oxygen and it still produced 29ppm of CO

Would you of been happy with 11.9% CO2 in flue gas? (stoich)..so it would "burn properly"???

 

[Aquaheat]

Oh steel stop playing lol. Stoich (bugger that shows up in google) is the perfect balance of fuel and air so it's the most efficient burn obviously!

 

[Mikefromlondon]

Ha ha, I am a responsible landlord, and If you have any doubts, I will take a picture of that print out slip and post here, tomorrow and you will see i don't lie, the test was carried out today in my rented house in Harlow, where I used to have WAU that served me very well for almost 20 years and with rarely failing tests, even now that WAU is still in place as a back up heating, which can be recommissioned if necessary but I decided to go for wet CH due to higher efficiency and savings on gas bills, that is how much I think for my tenants.

Any ways on that slip, efficiency stated was 97.5% net and gross 88.4%, ambient temp 14.8c and The guy based in Harlow wanted £60.00 and guess what I paid him £70.00, at my own discretion, so where do you get this penny pinching accusations. and yes the O2 is stated as 6.1%

 

[Steelmasons]

Hey Mike a little calc for you.....

CO2% from O2%.

11.9 * (20.9 - 6.1)
------------------------ = 8.42% CO2..
20.9

 

[Mikefromlondon]

Oh steel stop playing lol. Stoich (bugger that shows up in google) is the perfect balance of fuel and air so it's the most efficient burn obviously!

LOL! Stoichiometric ratio of fuel to air for a perfect combustion! obviously that would depend on the type of fuel you are using as well, and the temperature and density of air and gas, so the readings would be open to minor differences.

 

[Steelmasons]

I'm feeling generous Mike...

Ratio...

COppm
--------------------
CO2% (x 10,000)

29ppm
----------= 0.00034 ratio.
840000

 

[Steelmasons]

I like you Mike but you don't half talk some shyte.

 

[Mikefromlondon]

Hey Mike a little calc for you.....

CO2% from O2%.

11.9 * (20.9 - 6.1)
------------------------ = 8.42% CO2..
20.9

brilliant! that makes more sense, thats lean! save on gas!! good night now must hit the bed.

 

[Aquaheat]

I go another way steel its quicker.

(29/8.42)/10000 = 0.00034

 

[Mikefromlondon]

Thanks for learning me!!

 

[Aquaheat]

Thanks for teaching me that landlords might pay £70 for a proper service