ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A relief valve discharge capacity is rated in

  • PSIA
  • temperature minus pounds of air per second divided by release rate squared
  • PSIG
  • Pounds of air per minute.

2: When air is ducted through a machine room that services occupied space, What must be done?

  • Flanged and gasketed
  • Insulated and cross broke
  • Ducted and sealed
  • Welded and seamed.

3: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

4: What is the refrigerant chlorodifluoromethane?

  • R-123
  • R-134a
  • R-12
  • R-22

5: What do you need to do when you install a new system?

  • Document the superheat and subcooling reading
  • Have it inspected
  • Insulate the suction line before you take a superheat reading
  • Add refrigerant

6: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

7: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

8: R-22 is considered a(n)

  • CFC
  • HFC
  • HCFC
  • HCFCH

9: What is a Category "D" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact

10: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 24
  • 48
  • 36
  • 18

11: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

12: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-22
  • R-113
  • R-11
  • R-12

13: Ammonia is under what safety classification?

  • A3
  • B1
  • B3
  • B2

14: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 800F
  • 700F
  • 600F

15: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 9.00'
  • 8'4"
  • 7.25'
  • 7.00'

16: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

17: Refrigerant restricted in 2004 but used for transition for decades:

  • R-134A
  • R-123
  • R-22
  • R-11

18: Name three things that must be done when changing refrigeration lubricant?

  • Place sign, check for leaks, insulate
  • Nothing must be done
  • You can't change lubricants.
  • Make sure it's compatible, notify owner, notify AHJ

19: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 3
  • 5
  • 1
  • 2

20: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and non-flammable
  • non-toxic and highly flammable
  • toxic and somewhat flammable

21: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 13.9 lbs
  • 6.6 lbs
  • 22 lbs
  • 44 lbs

22: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 33
  • 18
  • 22

23: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 500 lbs
  • 330 lbs
  • 660 lbs
  • 55 lbs

24: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

25: What is an example of institutional occupancy?

  • Hospital
  • Shopping mall
  • Football stadium
  • Dorms