Topics: ASHRAE/CMR
1: How far from the window does a relief valve need to be according to ASHRAE-15?
- There is no minimum for relief valve and windows.
- At least 20'
- At least 40'
- At least 30'
2: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- institutional occupancy
- illegal occupancy
- public assembly occupancy
- commercial occupancy
3: Machinery rooms must be vented to ______?
- outdoors
- neutralizing tank
- unoccupied spaces
- basement
4: Pipe identification labels are required when the system contains more than
- 65 lbs
- 120 lbs
- 110 lbs
- 55 lbs
5: 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
- first disconnect in
- load-side of the contactor in
- breaker panel in
- 24 volt secondary side of the Class 2 transformer to the thermostat
6: A relief valve discharge capacity is rated in
- Pounds of air per minute.
- PSIG
- PSIA
- temperature minus pounds of air per second divided by release rate squared
7: A professional or office building would be considered what type of occupancy?
- business
- mercantile
- commercial
- public assembly
8: What is an example of institutional occupancy?
- Hospital
- Shopping mall
- Football stadium
- Dorms
9: What must be done if refrigeration lines pass through a concrete floor?
- moisture barrier
- installed through a pipe casing
- leak checked
- insulated
10: 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.
- 75
- 50
- 15
- 55
11: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 100
- 50
- 550
- 350
12: What is Trichlorotrifluoromethane?
- R-113
- R-11
- R-13
- R-12
13: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
14: Who approves containers for refrigerants?
- D.O.E
- D.O.D
- D.O.T
- E.P.A
15: What is an egress?
- An entrance or exit
- A valve put on the low side of the system to prevent frosting
- An escape route
- A code violation
16: How many different groups of refrigerants are there?
- 3
- 11
- 7
- 15
17: Single compound Refrigerants are classified by what two criteria?
- Flammability and temperature range
- Weight and color
- Temperature range and hazardousness
- Flammability and toxicity
18: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and reciever
- between the compressor and the stop valve
- between the compressor and oil separator
19: Whoever owns/uses a refrigeration or air conditioning system covered by this code
- must notify the Department of Public Safety prior to starting the system
- shall be licensed by the Commonwealth of Massachusetts according to CMR 522
- shall make application for inspections to the Chief of Inspectors
- None of the above
20: What is R-22?
- CCFCM
- HFC
- Chlorodifluoromethane
- Chlorofluoromethane
21: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- Lithium bromide
- HCFC-123
- ammonia
- CFC-11
22: Can you use Ammonia in industrial applications?
- When mixed with R-718
- Yes, Under certain condidtions
- Yes, always
- No, never
23: Indirect systems using Group II refrigerants
- shall be used in refrigeration system less than 1,000 lbs
- shall be used for mechanical equipment only
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
24: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 600F
- 800F
- 700F
- 1000F
25: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with R-718
- Flush with RX-11
- Flush with ammonia
- Flush with R-11