ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • compressor
  • outside the machinery room
  • boiler
  • evaporator

2: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 50
  • 15
  • 75
  • 55

3: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • low limit control
  • zone valve
  • pressure relief device

4: The discharge relief valve is located (9.4.6)

  • between the compressor and the stop valve
  • between the compressor and oil separator
  • between the compressor and reciever
  • on top of the condensor

5: A Low-Probability System

  • is a system highly likely to leak form a failed connection or component of such system
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space

6: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • breaker panel in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in
  • load-side of the contactor in

7: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • on a conspicuous card located near the evaporator
  • inside the room, immediately adjacent to each door
  • on a conspicuous card located near the compressor
  • outside the room, immediately adjacent to each door

8: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

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

  • 48
  • 36
  • 24
  • 18

10: Ammonia is under what safety classification?

  • B2
  • A3
  • B1
  • B3

11: A declaration test is needed when the system contains more than

  • 55 lbs
  • 65 lbs
  • 110 lbs
  • 120 lbs

12: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • commercial occupancy
  • institutional occupancy
  • mixed occupancy
  • public assembly occupancy

13: What would be the classification for Stop & Shop grocery store?

  • Industrial
  • Large mercantile
  • Instituional
  • Place of assembly

14: _____ and its alloys are suitable for use with ammonia systems.

  • Copper
  • Magnesium
  • Aluminum
  • Zinc

15: Where a refrigeration or air conditioning system is installed,

  • the form or certificate shall be authorized by the Department of Public Safety
  • it shall not be operated below prescribed pressuers
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • A field inspection shall be made before it is put into service

16: A restaurant is classified as a

  • mixed occupancy
  • public assembly occupancy
  • commercial occupancy
  • large mercantile occupancy

17: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-711
  • R-718
  • R-717

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

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

19: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

20: What is the refrigerant chlorodifluoromethane?

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

21: What is not a requirement of a Class T machine room?

  • Tight fitting doors
  • Automatic ventilation
  • Fire hose connected to the building fire protection system.
  • Self-closing doors

22: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 75%
  • 80%
  • 90%
  • 100%

23: 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.

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

24: What kind of material can't be used on the outlet of a relief valve?

  • Aluminum
  • Copper
  • Stainless Steel
  • PVC

25: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False