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WorksheetsFlue Gas Analysing Part 1 Phase 3 9189
Total questions: 29
Worksheet time: 29mins
Name
Class
Date
1.
Which manufacturer's instructions should you always read?
a)
Any manufacturer's
b)
Only Anton
c)
Only Kane
d)
Only Blue Laser
2.
What is the standard mentioned to aid in the correct use of the analyser?
a)
BS 7465 2015
b)
BS 7967 2015
c)
BS 8067 2015
d)
BS 8567 2015
3.
What initial reading should the oxygen level show in fresh air?
a)
19.9%
b)
21.5%
c)
20.9%
d)
18.9%
4.
What should you do if you suspect incorrect readings?
a)
Ignore them
b)
Replace the analyser
c)
Perform a leak test
d)
Change the battery
5.
What is the maximum CO reading for an appliance to be deemed safe?
a)
500 ppm
b)
400 ppm
c)
300 ppm
d)
350 ppm
6.
When should you start analysing the flue gas of a boiler?
a)
At the beginning
b)
After 5 minutes
c)
After 15 minutes
d)
At the end of the job
7.
How long should you wait for a stable reading?
a)
5 minutes
b)
10 minutes
c)
15 minutes
d)
20 minutes
8.
What is the purpose of the flue integrity test?
a)
Check for gas leaks
b)
Check the boiler's efficiency
c)
Check the flue seals
d)
Check the water pressure
9.
What is the minimum oxygen level required for the flue integrity test?
a)
19.9%
b)
21.0%
c)
20.6%
d)
20.0%
10.
What should you do if the CO reading exceeds 200 ppm during analysis?
a)
Continue analysing
b)
Wait a further 15 minutes
c)
Ignore it
d)
Call the manufacturer
11.
How long should you let the boiler run before taking readings?
a)
5 minutes
b)
10 minutes
c)
15 minutes
d)
20 minutes
12.
What is the average CO2 reading for high-efficiency boilers?
a)
6.2-8.2
b)
7.2-9.2
c)
8.2-10.2
d)
9.2-11.2
13.
How deep should the probe be inserted when analysing from the outside?
a)
100 mm
b)
150 mm
c)
200 mm
d)
250 mm
14.
What is a sign that the flue seals are compromised?
a)
High CO2 levels
b)
Low oxygen levels
c)
Rusty boiler casing
d)
Low water pressure
15.
What should the CO2 level be during the flue integrity test?
a)
Greater than 0.5
b)
Less than 0.2
c)
Equal to 0.3
d)
Greater than 0.4
16.
What does a CO reading of more than 3 ppm during a sweep test indicate?
a)
Test point left off
b)
Proper seal
c)
High efficiency
d)
Low efficiency
17.
How long should a sweep test be conducted?
a)
1 minute
b)
2 minutes
c)
3 minutes
d)
4 minutes
18.
What is the purpose of the sweep test?
a)
Check water pressure
b)
Check gas pressure
c)
Check for CO leaks
d)
Check for heat loss
19.
What should you do if you get high CO readings at the beginning of the analysis?
a)
Turn off the boiler
b)
Adjust the readings
c)
Wait for it to stabilise
d)
Ignore the readings
20.
What is the correct way to turn off the flue gas analyser?
a)
Directly switch off
b)
Make sure all readings are zero
c)
Remove the probe first
d)
Turn off the boiler first
21.
What does a CO2 ratio of 0.0004 indicate for a condensing boiler?
a)
Unsafe
b)
Safe
c)
At risk
d)
Immediately dangerous
22.
What is the first step when using the flue gas analyser?
a)
Turn on the boiler
b)
Connect the standard probe
c)
Insert the temperature probe
d)
Press the test menu button
23.
How long is the probe for the flue gas analyser?
a)
100 mm
b)
150 mm
c)
200 mm
d)
250 mm
24.
What should you do if the analyser shows a CO reading of 87 ppm?
a)
Continue analysis
b)
Ignore the reading
c)
Investigate further
d)
Turn off the boiler
25.
What is the CO reading threshold for condensing boilers to be deemed safe?
a)
0.0004
b)
0.0008
c)
0.0012
d)
0.0016
26.
What is the significance of a high CO reading at the beginning of the test?
a)
Normal for high-efficiency boilers
b)
Indicates a leak
c)
Indicates low efficiency
d)
Indicates a faulty analyser
27.
What should you do if the analyser gives a warning signal for high CO readings?
a)
Continue analysis
b)
Turn off the analyser
c)
Adjust the boiler
d)
Wait for it to stabilise
28.
How should you start the flue gas analysing procedure?
a)
With the boiler on high fire
b)
With the boiler off
c)
With the boiler on minimum fire
d)
With the boiler in standby
29.
What is the CO reading threshold for non condensing boilers to be deemed safe?
a)
0.0004
b)
0.0005
c)
0.0006
d)
0.0008
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