Topics: ASHRAE/CMR
1: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
2: Large mercantile occupancy is
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
3: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Leak tested
- Inspected
- Insulated
4: How many different groups of refrigerants are there?
- 15
- 11
- 3
- 7
5: How many CFMs are required per square foot of commercial office occupied space
- 20 CFM
- 5 CFM
- 15 CFM
- .5 CFM
6: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 18
- 33
- 50
7: Pipe identification labels are required when the system contains more than
- 65 lbs
- 110 lbs
- 55 lbs
- 120 lbs
8: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-1
- B-2
- A-2
9: What type of relief valve is used on a CO2 system?
- glove disc
- gate valve
- rupture disc
- fusible plug
10: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 15
- 10
- 18
- 24
11: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Moisture indicator
- Foot valve
- Stop valve
- Muffler
12: What is Trichlorotrifluoromethane?
- R-13
- R-11
- R-12
- R-113
13: Ammonia (NH3) is a group III refrigerant
- True
- False
14: A restaurant is classified as a
- large mercantile occupancy
- public assembly occupancy
- mixed occupancy
- commercial occupancy
15: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection and a rupture disc
- over pressure protection
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
16: How many groups of refrigerants are there?
- 5
- 3
- 1
- 7
17: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Flanged and gasketed
- Ducted and sealed
- Welded and seamed.
18: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 1 week
- 30 days
- 2 months
19: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 18
- 36
- 24
- 48
20: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- CO Sensing
- phosgene gas sening
- A group sensing
- refrigerant sensing
21: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- commercial
- mercantile
22: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 5
- 3
- 1
- 2
23: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
24: A relief valve discharge capacity is rated in
- PSIA
- PSIG
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
25: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above