G2 EXAM. ( EXAM 22) QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
Question 1
What is the largest propane cylinder manufactured TSSA Q
a. 240 pounds WC (108 kg)
b. 300 pounds WC (136 kg)
c. 420 pounds WC (190 kg)
d. 1000 pounds WC (454 kg)
c. 420 pounds WC (190 kg)
Question 2
Excessive gas pressure on the downstream side of a lock-up type pressure
regulator can be caused by:
A. An oversized vent line
B. An oversized supply line
C. A restricted supply line
D. A blocked vent line
Answer: D. A blocked vent line
Explanation: A blocked or restricted vent line prevents the regulator
diaphragm from moving freely and venting trapped air/gas pressure above
the diaphragm. This causes the internal valve seat to stay open or fail to lock
up tight, resulting in pressure buildup downstream.
Question 3
When a baffle is required to prevent the direct entry of rain into an air supply
opening, by how much can the baffle reduce the required free area of the
opening?
A. 0%
B. 1%
C. 3%
D. 5%
Answer: A. 0%
Explanation: According to CSA B149.1 / TSSA code, protective baffles,
louvers, or grilles cannot reduce the net minimum required combustion air
free area. The opening size must be increased accordingly so that the net
unobstructed free area after deducting the area blocked by the baffle is still
100% of the required area (0% reduction allowed).
Question 4
A first-stage regulator installed indoors in a domestic application:
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
Question 1
What is the largest propane cylinder manufactured TSSA Q
a. 240 pounds WC (108 kg)
b. 300 pounds WC (136 kg)
c. 420 pounds WC (190 kg)
d. 1000 pounds WC (454 kg)
c. 420 pounds WC (190 kg)
Question 2
Excessive gas pressure on the downstream side of a lock-up type pressure
regulator can be caused by:
A. An oversized vent line
B. An oversized supply line
C. A restricted supply line
D. A blocked vent line
Answer: D. A blocked vent line
Explanation: A blocked or restricted vent line prevents the regulator
diaphragm from moving freely and venting trapped air/gas pressure above
the diaphragm. This causes the internal valve seat to stay open or fail to lock
up tight, resulting in pressure buildup downstream.
Question 3
When a baffle is required to prevent the direct entry of rain into an air supply
opening, by how much can the baffle reduce the required free area of the
opening?
A. 0%
B. 1%
C. 3%
D. 5%
Answer: A. 0%
Explanation: According to CSA B149.1 / TSSA code, protective baffles,
louvers, or grilles cannot reduce the net minimum required combustion air
free area. The opening size must be increased accordingly so that the net
unobstructed free area after deducting the area blocked by the baffle is still
100% of the required area (0% reduction allowed).
Question 4
A first-stage regulator installed indoors in a domestic application:
