What 3 points of the combustion process is the temp affected by excess air?
Flame temp
Ultimate gas
Combustion gas temp
Flue gas temp
Flame retctification
Where is excess air introduced into the heat exchanger?
Burners air shutters
Cold air from outdoors
Venting action
Leaks in the joints,ports
Basement windows
What should an obt do about excess air introduced through leaks?
Elminiate
Leave it be
Call for help
At what point do flue gas temp become dangerous?
750 f
700 f
1000 f
850 f
Does excess air introduced through leaks participate in combustion?
No
Yes
What are 4 causes of high flue gas temp other then excessive air?
Dirty heat exchanger
Excessive draft
Too high firing rate
The heated medium is not properply able to absorb the combustion heat
The heated medium is properply able to absorb the combustion heat
What is 1/8" of soot equavilent compared to fiberglass insulation?
1'
3'
4'
2'
What are a few of the causes of CO in an oil burning system?
Insufficient air
Insufficient oxygen
Flame impingement
Too much excess air
Poor atmoization/vaporization
Enough air
Great flame
What is the general size of a sampling point?
1/4"
1/8"
1'
1/2"
Where should the breech draft sampling hole be loacted?
One flue pipe diameter on appliance side of draft reg
2 flue pipe diameters from breeching or an elbow
Anywhere
2 flue pipe diameters from furnace
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