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Question 1 of 112
1. Question
For a specific installation, gas line ____ tables refer to the smallest gas line size.
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Question 2 of 112
2. Question
Before turning horizontal the ____ must be installed as high as possible.
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Question 3 of 112
3. Question
____ GSG metal pipe may be used for an outdoor installed incinerator with the entire venting pipe fully exposed.
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Question 4 of 112
4. Question
Between a combustible surface and a double wall vent pipe is one ____ is the minimum distance that must be maintained.
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Question 5 of 112
5. Question
In gas installations a B pressure qualified welder is allowed by code to perform weld joints as long as the joint has a diameter greater than ____ inches.
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Question 6 of 112
6. Question
Between a combustible surface and a single wall vent pipe is ____ inch is the minimum distance that must be maintained.
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Question 7 of 112
7. Question
The flue gases are removed from the furnace due to the ____ created.
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Question 8 of 112
8. Question
Systems where a thermopile is installed power must be generated for the main gas valve and ____.
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Question 9 of 112
9. Question
A ____ appliance is referred to as a gas appliance that does not depend on the buildings air for operation.
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Question 10 of 112
10. Question
A ____ is a pilot that is automatically ignited each time the main burner is ignited, and which is automatically extinguished at the end of the successful main flame establishment period.
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Question 11 of 112
11. Question
The greater of the piping diameter it serves or three inches is the minimum drip or dirt pocket ____.
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Question 12 of 112
12. Question
The following types of draft control devices are installed in gas fired appliances: Select all that apply (2/5)
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Question 13 of 112
13. Question
____ metal plates must be installed to protect tubing and CCST flexible gas piping that is installed inside a wall.
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Question 14 of 112
14. Question
On the ____ side of the meter is where the start point for the gas line sizing and installation for a low pressure natural gas line.
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Question 15 of 112
15. Question
The utility company owns with of the following: Select all that apply (3/5)
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Question 16 of 112
16. Question
On an unvented appliances two ____ is the flex connectors maximum length.
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Question 17 of 112
17. Question
The operational purpose of a ____ installed on a gas appliance is to ignite the main burner.
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Question 18 of 112
18. Question
Which fittings can be installed with steel pipe: Select all that apply (2/5)
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Question 19 of 112
19. Question
A ____ vent is installed on a high efficiency furnace for venting.
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Question 20 of 112
20. Question
____ can be used for the construction of vent connectors.
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Question 21 of 112
21. Question
____ are installed in process piping system to control velocity and gas volume regulation.
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Question 22 of 112
22. Question
More energy is required for ____ to travel through a piping system due to it being heavier than air.
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Question 23 of 112
23. Question
For a low pressure residential installation ____ is the minimum rough in piping test pressure.
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Question 24 of 112
24. Question
A BH vent installed on a high efficiency furnace for venting may be constructed of the following materials: Select all that apply (2/5)
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Question 25 of 112
25. Question
___ inches squares is a rectangular vent pipes minimum area.
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Question 26 of 112
26. Question
The ____ installed in a residential gas hot water heater never automatically extinguished once the main burner ignition is established.
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Question 27 of 112
27. Question
The installer must verify that a good liner is in place, in the event a gas fireplace is to be installed to a ____ chimney.
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Question 28 of 112
28. Question
If you notice a waving ____ flame heating the appliance thermocouple, the most probable cause is a draft on the flame.
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Question 29 of 112
29. Question
When a vent is installed on a dwelling, it must extend at least ____ above the building’s roof.
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Question 30 of 112
30. Question
How many feet must a installed vent extend above the roof of a dwelling?
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Question 31 of 112
31. Question
After completing a pressure test and gas lines are about to be purged, vehicles must be a minimum of 10 ____ from the air intake and the building.
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Question 32 of 112
32. Question
After completing a pressure test and gas lines are about to be purged, what is the minimum distance vehicles must be from the air intake and the building?
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Question 33 of 112
33. Question
A ____ propane system’s regulator must be within 3 feet of an outside wall.
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Question 34 of 112
34. Question
2 psig low pressure gas lines should be tested for 15 minutes that are ____ or less in length.
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Question 35 of 112
35. Question
How many feet from an outside wall must the system regulator of a 2 psi propane system be within?
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Question 36 of 112
36. Question
In a piping system the density of the gas utilized in a system has a significant impact on ____ loss via the piping system.
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Question 37 of 112
37. Question
To prevent a dwelling from filling up with gas, many gas appliances today are built with a ____, which is a safety measure to turn the gas off if the pilot flame goes out.
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Question 38 of 112
38. Question
An electrically-activated vent damper will open when the appliance ____ valve opens.
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Question 39 of 112
39. Question
The minimum height for a newly installed appliance vent, measured from the flue collar to where the vent ends outside, is 5____.
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Question 40 of 112
40. Question
What is the minimum height for a newly installed appliance vent? (Measured from the flue collar to where the vent ends outside)
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Question 41 of 112
41. Question
A union or a combination of fittings designed and intended to act as a ____ joint shall not be used where piping is concealed.
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Question 42 of 112
42. Question
The key difference between a ____ system and a 100 percent shut-off system is that in the 100 percent shut-off system, if there is no flame, the gas supply to the pilot and the main valve will be cut off.
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Question 43 of 112
43. Question
After completing a pressure test and ready to purge the gas lines, the purge point must be at minimum of ____ away from a building or air intake.
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Question 44 of 112
44. Question
When a gas appliance is turned on, the release of gas that occurs until an updraft is formed is referred to as ____.
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Question 45 of 112
45. Question
On a pressure control device the ____ installed must be no smaller than 1/4 inch in diameter.
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Question 46 of 112
46. Question
The ____ point of brazing alloys must be at least 1000 degrees Fahrenheit.
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Question 47 of 112
47. Question
The longest length of ____ gauge cable millivolt that can be installed in an installation is 24 feet.
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Question 48 of 112
48. Question
Which of the following does not describes manifold pressure? Select all that apply (4/5)
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Question 49 of 112
49. Question
What is manifold pressure?
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Question 50 of 112
50. Question
When low pressure occurs on a regulator, and it has a low pressure trip, the regulator will have to be manually reset in order for ____ to flow.
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Question 51 of 112
51. Question
When low pressure occurs on a regulator, and it has a low pressure trip, the regulator will have to ____ in order for gas to flow.
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Question 52 of 112
52. Question
Any debris or dust particles will be burned off by the ____ pilot installed in gas appliances prior to mixing with the gas.
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Question 53 of 112
53. Question
The maximum allowable ____ for a hose in a permanent gas installation is three meters.
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Question 54 of 112
54. Question
For a permanent gas installation, what is the maximum length of hose allowed?
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Question 55 of 112
55. Question
Which of the following are pilot designs installed in gas appliances ? Select all that apply (4/5)
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Question 56 of 112
56. Question
Unless a natural gas threaded pipe is schedule 80 it must not be smaller than 1/2 inch ____.
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Question 57 of 112
57. Question
A ____ heater should not be installed in a masonry fireplace with a permanently open flue.
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Question 58 of 112
58. Question
Residential gas lines are buried at a minimum depth of ____ inches.
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Question 59 of 112
59. Question
On a low pressure propane gas line, the starting point for size and installation will be on the meter’s ____.
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Question 60 of 112
60. Question
Motive power is the suction caused by combustion products rising up via a ____.
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Question 61 of 112
61. Question
An appliance with an input of more than ____ MBH, the venting shall not terminate within 3 feet of a window that can be opened and closed.
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Question 62 of 112
62. Question
For a gas installation the ____ test gauges maximum range is required to be at least 15% greater than the required test pressure.
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Question 63 of 112
63. Question
For a ____, conventional malleable fitting installed in a saturated steam system, the maximum pressure allowed is 150 psi.
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Question 64 of 112
64. Question
The gas line to an appliance ____ may be purged if the unit is less than 400 MBH.
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Question 65 of 112
65. Question
The best use for ____ piping is installation of underground water main lines.
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Question 66 of 112
66. Question
Type K copper piping can be described as follows. Select all that apply (4/5)
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Question 67 of 112
67. Question
The ____ used in a regulator can has the orifice opening size stamped on it.
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Question 68 of 112
68. Question
When the water in a hot water tank reaches the optimum temperature, the energy cut off will cause the ____ to close.
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Question 69 of 112
69. Question
If a hot water tanks contents reach optimum temperature, what will cause the gas valve to shut off?
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Question 70 of 112
70. Question
On a residential dwelling the installed vent is required to extend at least two feet above any section of the building within ____ feet.
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Question 71 of 112
71. Question
A thermopile, also known as a ____, is made up of numerous thermocouples connected in series.
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Question 72 of 112
72. Question
For the first 10 feet downstream of a ____ vaporizer, plastic piping cannot be installed.
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Question 73 of 112
73. Question
For the first 10 feet downstream of a propane vaporizer, ____ piping cannot be installed.
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Question 74 of 112
74. Question
Mechanical compression joints used to transition ____ to steel in underground gas pipes must be at least 15 feet away from any building.
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Question 75 of 112
75. Question
When transitioning from plastic to steel in underground gas pipes, the mechanical compression joints must be a minimum of ____ feet from any building.
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Question 76 of 112
76. Question
Where the gas line crosses a ____, commercial gas line installations require a minimum of 24 inches of cover.
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Question 77 of 112
77. Question
How many inches of cover are required when a commercial gas line crosses a driveway?
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Question 78 of 112
78. Question
In which of the following locations can a draft vent hood not be installed: Select all that apply (3/5)
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Question 79 of 112
79. Question
While sizing a gas line, which of the following factors are of primary importance? Select all that apply (3/5)
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Question 80 of 112
80. Question
The specific gravity of ____ vapor is 1.50
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Question 81 of 112
81. Question
Who of the following are not responsible for adjusting a service regulator? Select all that apply (4/5)
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Question 82 of 112
82. Question
Which of the following type of tubings are approved for above ground installation? Select all that apply (3/5)
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Question 83 of 112
83. Question
____ disconnect fittings are used to provide fast and easy connection and disconnection of fluid lines.
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Question 84 of 112
84. Question
Using a test adaptor to verify the ____ voltage, a voltage measurement of 8 to 17 mV is normal.
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Question 85 of 112
85. Question
What would be the expected voltage reading on a thermocouple using a test adapter?
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Question 86 of 112
86. Question
An undersized regulator may cause ____ to form on the regulators outer body and head.
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Question 87 of 112
87. Question
When sizing a chimney that serves more than one appliance, take the area of the largest flue plus ____ of the sum of all other flues.
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Question 88 of 112
88. Question
Depending on the sort of area in which the pipeline operates, the pressure of gas in each segment of line normally ranges from ____ pounds to 1,500 pounds per square inch.
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Question 89 of 112
89. Question
Within twenty four ____ of the outlet meter, gas lines for additional appliances must be installed
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Question 90 of 112
90. Question
When the gas ____ in the building is higher than what the appliances demand, a system regulator will be installed to decrease the building supply pressure to the required appliance supply pressure.
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Question 91 of 112
91. Question
When purging a gas line, a ____ with an associated handle must be installed no more than 5 feet from the purge point in the purge piping.
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Question 92 of 112
92. Question
The customer would ____ as a result of a regulator freeze-up.
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Question 93 of 112
93. Question
When a hot water system’s maximum temperature is achieved, a/an ____ opens.
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Question 94 of 112
94. Question
The supply and return connectors on a ____ linear radial panel will be on the same end.
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Question 95 of 112
95. Question
Spring rate would account for the majority of force on a pipe ____.
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Question 96 of 112
96. Question
Offsets can be installed to accommodate pipe expansion on short runs of ____ heating piping.
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Question 97 of 112
97. Question
Calgary’s specified exterior design temperature is ____.
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Question 98 of 112
98. Question
Pipe guide spacing is crucial on a pipe run, with the second pipe guide set no more than 14 pipe diameters from the ____ joint.
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Question 99 of 112
99. Question
The amount of pressure used for pressure testing a ____ will be set by the manufacturer’s instructions.
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Question 100 of 112
100. Question
The condensing boiler, which often includes the installation of an extra heat exchanger, is categorized as a high-efficiency boiler with an efficiency of ____ or higher.
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Question 101 of 112
101. Question
If a boiler is fired up with high water pressure, the ____ valve may blow.
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Question 102 of 112
102. Question
The supply lines that supply a correctly installed vertical unit ____ will be installed with a pitch down from the unit.
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Question 103 of 112
103. Question
A ____ pitch from the unit will be the direction of the lines installed feeding a vertical unit heater.
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Question 104 of 112
104. Question
Which of the following could prevent freeze up if a hydronic unit heater is installed at a residential site in an attached garage? Select all that apply (3/5)
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Question 105 of 112
105. Question
When choosing the right ____ expansion joint, make sure the axial movement is at least equivalent to the maximum pipe movement.
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Question 106 of 112
106. Question
Auxiliary systems are addressed in ____ of the heating code.
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Question 107 of 112
107. Question
If a section of a ____ system travels through a freezing zone, the installation of a wild loop may be required to provide continuous flow between the supply and return pipes.
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Question 108 of 112
108. Question
Which of the following determine the output of a finned baseboard heater? Select all that apply (2/5)
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Question 109 of 112
109. Question
On long run hydronic piping systems, the following methods can be used to facilitate expansion. Select all that apply (3/5)
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Question 110 of 112
110. Question
Because ____ radiators and convectors release heat at different rates, they should not be piped in the same heating zone.
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Question 111 of 112
111. Question
Piping installations that connect ____ that operate at different pressures to one common header may result in operational issues such as experiencing backflow.
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Question 112 of 112
112. Question
The condensing boiler, which commonly incorporates an extra heat exchanger, is categorized as a high-efficiency boiler with an efficiency of ____ or higher.
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