G2 EXAM PREPARATION VERSION 1
G2 EXAM PREPARATION VERSION 1 NEWEST 2025/2026
COMPLETE 300 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW VERSION!!
You're taking a shower at home and you notice that the water temperature starts
to drop after 1 minute with no other faucets running and your gas bill is paid on
time. What would be the likely cause of this?
a.
The dip tube is either cracked or broken
b.
The system is out of calibration
c.
The new shower head is passing too much water
d.
The Inver steel sensor has calcium deposits - ANSWER-The dip tube is either
cracked or broken
A 90,000 BTU Category IV furnace shall have a minimum vent termination distance
from a Window or door of?
a.
1|Page
, G2 EXAM PREPARATION VERSION 1
2400mm (96 in)
b.
900mm (36 in)
c.
300mm (12 in)
d.
1800m111(72 in) - ANSWER-300mm (12 in) (8.14.8)
A forced warm air furnace is operating at 85% efficiency. If the temperature rise is
78°F and the fan is moving 950 cfm, what is the input?
a.
70 000 Btuh
b.
81 500 Btuh
c.
96 000 Btuh
2|Page
, G2 EXAM PREPARATION VERSION 1
d.
56,510 Btuh - ANSWER-70 000 Btuh (Unit 19 P.52)
A forced-air appliance installation in a garage shall be done in accordance with?
a.
Local Building code or national building code of Canada
b.
Local Electrical code or national building code of Canada
c.
Local Plumbing code or national building code of Canada
d.
Is not recommended for this application - ANSWER-Local Building code or national
building code of Canada
If a 24 volts gas valve solenoid is working properly but a humming sound is heard
coming from the gas valve, what would be the cause of this?
a.
High voltage
3|Page
, G2 EXAM PREPARATION VERSION 1
b.
Solenoid coil it broken or burnt out
c.
The common wire is on the wrong terminal
d.
Low voltage - ANSWER-Low voltage
If a category III appliance is equipped with an electrically operated automatic vent
damper, when should it operate?
a.
As soon as gas reaches upstream of the appliance regulator
b.
When the damper is proven to be fully open before ignition of the main burner
c.
When the appliance surface temperature reaches 140°F
d.
4|Page
G2 EXAM PREPARATION VERSION 1 NEWEST 2025/2026
COMPLETE 300 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW VERSION!!
You're taking a shower at home and you notice that the water temperature starts
to drop after 1 minute with no other faucets running and your gas bill is paid on
time. What would be the likely cause of this?
a.
The dip tube is either cracked or broken
b.
The system is out of calibration
c.
The new shower head is passing too much water
d.
The Inver steel sensor has calcium deposits - ANSWER-The dip tube is either
cracked or broken
A 90,000 BTU Category IV furnace shall have a minimum vent termination distance
from a Window or door of?
a.
1|Page
, G2 EXAM PREPARATION VERSION 1
2400mm (96 in)
b.
900mm (36 in)
c.
300mm (12 in)
d.
1800m111(72 in) - ANSWER-300mm (12 in) (8.14.8)
A forced warm air furnace is operating at 85% efficiency. If the temperature rise is
78°F and the fan is moving 950 cfm, what is the input?
a.
70 000 Btuh
b.
81 500 Btuh
c.
96 000 Btuh
2|Page
, G2 EXAM PREPARATION VERSION 1
d.
56,510 Btuh - ANSWER-70 000 Btuh (Unit 19 P.52)
A forced-air appliance installation in a garage shall be done in accordance with?
a.
Local Building code or national building code of Canada
b.
Local Electrical code or national building code of Canada
c.
Local Plumbing code or national building code of Canada
d.
Is not recommended for this application - ANSWER-Local Building code or national
building code of Canada
If a 24 volts gas valve solenoid is working properly but a humming sound is heard
coming from the gas valve, what would be the cause of this?
a.
High voltage
3|Page
, G2 EXAM PREPARATION VERSION 1
b.
Solenoid coil it broken or burnt out
c.
The common wire is on the wrong terminal
d.
Low voltage - ANSWER-Low voltage
If a category III appliance is equipped with an electrically operated automatic vent
damper, when should it operate?
a.
As soon as gas reaches upstream of the appliance regulator
b.
When the damper is proven to be fully open before ignition of the main burner
c.
When the appliance surface temperature reaches 140°F
d.
4|Page
