HVAC Journeyman Prep Test

60 Questions  I  By Ferstade
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1.  11. Where unvented infrared heaters are installed, natural or mechanical means shall provide outdoor ventilation air at a rate of not less than ________ of the aggregateinput rating of all such heaters installed in the space.
A.
B.
C.
D.
2.  35. Smoke detectors shall be installed in return air systems with a design capacity greater than ________ cfm.
A.
B.
C.
D.
3.  62. Oxygen cylinders in storage shall be seperated from fuel-gas cylinders or combustible materials a minimum of ______ feet or by a noncombustible barrier at least 5 feet high having a fire resistance rating of at least 1/2 hour.
A.
B.
C.
D.
4.  36. Equipment and appliances installed at grade level shall be supported on a level concrete slab or other approved material extending not less than _________ inches above adjoining grade.
A.
B.
C.
D.
5.  6.Refrigerant piping that crosses an open space that affords passageway in any building shall not be less than _________ above the floor unless the piping is located against the ceiling of such space.
A.
B.
C.
D.
6.  60. Lifelines shall be secured above the point of operation to an ancorage or structual member capable of supporting a minimum dead weight of ________ pounds.
A.
B.
C.
D.
7.  32. The internal diameter of 2 inch type L copper is __________.
A.
B.
C.
D.
8.  54. Ducts shall be supported with approved hangers at intervals not exceeding _______ feet.
A.
B.
C.
D.
9.  2.Welding cylinders shall be moved by ________?
A.
B.
C.
D.
10.  28. The use of gypsum boards to form plenums shall be limited to systems where the temperatures do not exceed __________ degrees.
A.
B.
C.
D.
11.  20. A run winding in a compressor has _______ resistance than the start winding.
A.
B.
C.
D.
12.  31. A safety belt lanyard shall be a minimum of 1/2" nylon, or equivalent, with a maximum length to provide for a fall of no greater than _______ feet.
A.
B.
C.
D.
13.  8.A level service space in front of an appliance mounted in an attic shall not be less than __________.
A.
B.
C.
D.
14.  63. Oxygen depletion safety systems shall shut off the gas supply to the main and pilot burners when the oxygen in the surrounding atmosphere is depleted to the percent concentration specified by the manufactuer, but not lower than ______ percent.
A.
B.
C.
D.
15.  37. Underground gas piping systems must be buried at a minimum depth of _______ inches below ground.
A.
B.
C.
D.
16.  81. The maximum horizontal support spacing for pex piping shall be a minimum of ________ inches?
A.
B.
C.
D.
17.  4. A 14 inch gas vent protruding through a roof and located within 8 feet of a vertical wall must terminate not less than ________ feet above highest point it passes through the roof.
A.
B.
C.
D.
18.  44. Gas piping systems that are to be supplied with a gas of a specific gravity of ______ or less can be sized directly from the tables provided in the international fuel gas code.
A.
B.
C.
D.
19.  43. An application for a permit for any proposed work shall be deemed to have been abandoned ______ days after the date of filing.
A.
B.
C.
D.
20.  30. Factory built chimneys for medium heat appliances producing flue gases having a temperature above _______ degrees, measured at the entrance to the chimney, shall comply with UL 959.
A.
B.
C.
D.
21.  57. Round metal ducts used for single swelling units of a size of 16 inches shall be of ______ guage.
A.
B.
C.
D.
22.  72. The minimum clearance from appliances mounted below grade shall be at least?
A.
B.
C.
D.
23.  51. Water is considered a refrigerant. What is its name?
A.
B.
C.
D.
24.  58. The flash point of a transfer fluid in a hydronic piping system shall be a minimum of _______ degrees above the maximum system operating pressure.
A.
B.
C.
D.
25.  66. What is the required outdoor air ventalation rate for the bathrooms in motels?
A.
B.
C.
D.
26.  19. The equivalent length of a 8" diameter mitered 90 degree elbow is _________.
A.
B.
C.
D.
27.  74. What is the function of a heat anticipator wire in the thermostat?
A.
B.
C.
D.
28.  1.How many amps can a 40va, 120volt transformer with a 24volt secondary carry?
A.
B.
C.
D.
29.  77. Where openings below grade provide required natural ventilation, the outside horizontal clear space measured perpendicular to the opening shall be ________ times the depth of the opening.
A.
B.
C.
D.
30.  52. Underground ducts shall have a minimum slope of _____ inch per foot to allow drainage to a point provided with access.
A.
B.
C.
D.
31.  50. NFPA 58-08 has to do with __________.
A.
B.
C.
D.
32.  29. A liquid is considered flammable if it has a flash point below ________ degrees and has a vapor pressure not exceeding 50 psia.
A.
B.
C.
D.
33.  76. Interior spaces intended for human occupancy shall be provided with active or passive space-heating systems capable of maintaining a minimum of ______ degrees at a point 3 feet above floor on the design heating day.
A.
B.
C.
D.
34.  39. Guards are required when appliances, equipment, fans or other components that require service and roof hatch openings are located within _________ feet of the roof edge.
A.
B.
C.
D.
35.  34. Where equipment requiring access and appliances are installed on roofs or elevated structures at a heigth exceeding _______ feet, such access shall be provided by a permanent approved means of access.
A.
B.
C.
D.
36.  25. A thermocouple strength is measured in _____________.
A.
B.
C.
D.
37.  71. How thick of a pad shall a condensor be mounted on when installed on grade surfaces?
A.
B.
C.
D.
38.  40.Support bracing for 1 1/4" copper tubing shall be at interavals no less than _______ feet.
A.
B.
C.
D.
39.  46. Vented wall furnaces shall be located such that any door swing shall not come closer than _______ inches to any air inlet or air outlet measured at right angles to the opening.
A.
B.
C.
D.
40.  45. The minimum size cast iron pipe that can be utilized for gas piping is _________.
A.
B.
C.
D.
41.  24. The maximum vent connector length of a 8" diameter connector is _______ feet.
A.
B.
C.
D.
42.  75. What is the minimum height of a guard when a unit is mounted close to the edge of a roof?
A.
B.
C.
D.
43.  3.______________ motors driving exhaust fans shall not be placed inside booths and ducts.
A.
B.
C.
D.
44.  13. If you install a 20 mfd capacitor and a 40 mfd capacitor in parallel, you recieve a total capacitance of ___________.
A.
B.
C.
D.
45.  5.All gas piping installed on top of roofs shall be elevated not less than _______ inches off the roof surface.
A.
B.
C.
D.
46.  68. Which of the following areas can fuel fired appliances not draw combustion air from?
A.
B.
C.
D.
47.  65. What is the minimum height above the flor an appliance must be installed in a private garage?
A.
B.
C.
D.
48.  78. Openings in screens, louvers and grills for exhaust openings shall be _________________________.
A.
B.
C.
D.
49.  59. Unvented room heaters shall not have an input rating in excess of ________ btu/hr.
A.
B.
C.
D.
50.  26. A vent shall terminate through a 12/12 roof slope by ______ feet as long as it is no closer than 8' from a vertical wall.
A.
B.
C.
D.
51.  23. Exhaust airflow rate for a barber shop shall be __________ cfm/square foot.
A.
B.
C.
D.
52.  42. Tare weight ( when talking about recovery tanks) means?
A.
B.
C.
D.
53.  56. The lowest portion of a floor furnace shall not have less than a ________ inch clearance from grade.
A.
B.
C.
D.
54.  61. Quantities of flammable and combustible liquid in excess of ______ gallons shall be stored in an acceptable or approved cabinet. 
A.
B.
C.
D.
55.  15. A natural gas piping system that has a 250,000 btu furnace attached to it and has a longest run of 93', inlet pressure under 2 psi, pressure drop of .5 in w.c., and specific gravity of .60 should have a schedule 40 mettallic pipe no less than ________ in diameter.
A.
B.
C.
D.
56.  67. What part of the code allows the inspector to make rules concerning the reuse of equipment?
A.
B.
C.
D.
57.  7.The length of pipe to be cut of 3/4" pipe that has a 90 and a 45 at each end is _______.
A.
B.
C.
D.
58.  69. An application for a permit must be accompanied by how many sets of construction documents?
A.
B.
C.
D.
59.  10.Electrical wiring, contols and connections to equipment and appliances regulated by this code shall be in accordance with __________.
A.
B.
C.
D.
60.  18. The minimum fire protection rating for a fire damper installed in less than 3 hour fire resistance rated assemblies is ________ hours.
A.
B.
C.
D.
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