2. Why Combustion Testing? The purpose of the testing is to see
how well the unit is using the fuel The testing benefits the
customer Should be performed once a year with routine service 3.
Table of Contents Light Off Draft Smoke CO2 Stack Temperature and
Net Temperature Efficiency Combustion Test Report Typical Readings
Conclusion Self Test 4. Lighting Off Safety Glasses Fuel Supply
Reset Button Stand to the Side! 5. Draft Why measure draft? This is
ensures the flue products are going where they are supposed to up
the chimney Measure in inches of water column Measure with a draft
meter: Caution! Probe tip will be hot! 6. Draft: Overfire:
measurement should be -0.02w.c. Insert probe here Caution! Probe
tip will be hot! 7. Draft Insert the probe tip about an inch into
the opening and read the measurement 8. Draft Any adjustments are
made by adjusting the counterweight on the barometric damper Record
this reading 9. Smoke What is smoke? Smoke is simply soft carbon,
remnants of the unburned fuel Not desirable at all Use smoke tester
to check 10. Smoke Start by inserting a clean sheet of test paper
as shown here: Tighten and loosen here 11. Smoke Inert probe tip
about an inch into the opening Pump the tester ten times to obtain
the sample Caution! Probe tip will be hot! 12. Smoke Remove the
test paper sample and compare it to the smoke chart Less than 2 is
desired 13. Smoke Make adjustments to the air shutter to obtain
less than #2 smoke Adjust here: Course and Fine 14. CO2 CO2: Carbon
Dioxide levels We are measuring excess gases within the flue
byproducts Levels should be 10 to 12.5% Measure with Shaker bottle:
15. WARNING ! Shaker bottle contains potassium hydroxide Substance
is highly corrosive Gloves and safety glasses are required For more
information visit http://www.cdc.gov/niosh/npg/npgd052 3.html 16.
CO2: Test Procedure Depress plunger to clear chamber Zero the scale
17. CO2: Test Procedure Insert probe tip one inch into the opening
in the stack Hold sampling tube down on plunger Squeeze bulb 18
times Caution! Probe tip will be hot! 18. CO2: Test Procedure
Important! Release the plunger before removing the probe. Remove
probe from stack Turn shaker bottle upside down twice to mix the
sample 19. CO2: Test Procedure Measure and record the fluid level
20. Stack and Net Temperatures The stack temperature is the
measured temperature in the stack The ambient temperature is the
temperature of the surrounding area (room temperature) The net
temperature is the stack temperature minus the ambient temperature.
21. Stack and Net Temperatures Stack Ambient Measure both
temperatures and record Caution! Probe tip will be hot! 22. Stack
and Net Temperatures Calculate Net Temperature: Our example: Stack
Temperature: 560F Ambient Temperature: 80F 560F - 80F = 460F Net
Temperature Record this reading 23. Efficiency Use the Fire Finder
slide rule to solve for efficiency using CO2 and net temperature
values record values 24. Efficiency: Example 9.5% CO2 550F 76%
Efficient 25. Combustion Testing Report Compile data from testing
into a report for customer and your records Click on the following
link to see an example of a combustion testing report:
http://donibartley.jimdo.com/combustio n-testing-report-form/ 26.
Typical Readings Oil-fired power burners*: O2 (flame retention)
3-6%. CO2 10-12.5%. Stack temp 60-79% AFUE 400 to 600F Stack temp
80-plus AFUE 330 to 450F Stack temp 90-plus AFUE less than 125F
Draft -0.02 inch wc overfire. Draft (stack) -02 inch wc/0.04 inch
wc. Smoke spot #0-#1. * Always follow manufacturers recommendations
27. Conclusion The combustion testing procedures you just learned
about are designed to be performed by a professional Your next step
will be conducting hands-on training in a laboratory environment
under the supervision of a trained professional Now lets test your
knowledge you have acquired about combustion testing: QUIZ 28. Quiz
Question 1: At what location would you make any adjustments to the
draft of an oil burner during combustion testing? A B C D Air
shutter Barometric damper Pressure regulator Indoor fan motor Next
Question 29. That is Correct! Next Question Back to Question 30.
Incorrect. Try Again. Back to Question Next Question 31. Incorrect.
Try Again. Back to Question Next Question 32. Incorrect. Try Again.
Back to Question Next Question 33. Quiz Question 2: What is the
name of the dangerous substance found in the aqueous solution in
the CO2 shaker bottle? A B C D Potassium chloride Potassium sulfate
Potassium hydroxide Potassium nitride Next Question Previous
Question 34. That is Correct! Next Question Back to Question 35.
Incorrect. Try Again. Back to Question Next Question 36. Incorrect.
Try Again. Back to Question Next Question 37. Incorrect. Try Again.
Back to Question Next Question 38. Quiz Question 3: How many times
should you pump the smoke tester during a sample? A B C D 10 18 16
12 Next Question Previous Question 39. That is Correct! Next
Question Back to Question 40. Incorrect. Try Again. Back to
Question Next Question 41. Incorrect. Try Again. Back to Question
Next Question 42. Incorrect. Try Again. Back to Question Next
Question 43. Quiz Question 4: What two values are used to solve for
efficiency? A B C D Stack temperature and smoke number CO2 and
Draft Net Temperature and CO2 Draft and smoke number Table of
Contents Previous Question 44. That is Correct! Table of Contents
45. Incorrect. Try Again. Back to Question 46. Incorrect. Try
Again. Back to Question 47. Incorrect. Try Again. Back to
Question
