Topics: ASHRAE/CMR
1: 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)
- commercial occupancy
- public assembly occupancy
- institutional occupancy
- illegal occupancy
2: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
- 110
- 90
- 100
- 80
3: R-22 is considered a(n)
- HCFC
- CFC
- HFC
- HCFCH
4: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Leak checked
- Insulated and installed in a pipe duct (Encased)
- Classifed
- Certified
5: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
- 100%
- 75%
- 90%
- 80%
6: What refrigerant is an inorganic compound?
- R-410A
- R-22
- R-132A
- Ammonia
7: What type of material can't be used on the outlet of a relief valve?
- Stainless steel
- Magnesium alloy
- PVC
- Copper
8: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- III
- 15
- 25
- 10
9: Which occupancy can ammonia be used in?
- redifential
- depends on the quantity of freon
- industrial
- commercial
10: How much clearance do you need around the perimeter of electrical panels?
- 36"
- 18"
- 24"
- 12"
11: When must refrigeration system covered by the code be inspected?
- Not required
- Annually and when installed
- Upon installation
- Annually
12: 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
13: Pressure vessels with an internal volume of 3 cubic feet or more
- do not need pressure relief protection
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
- shall use fusible plugs
14: Can you use Ammonia in industrial applications?
- When mixed with R-718
- No, never
- Yes, always
- Yes, Under certain condidtions
15: Evaporators within 18" of a heating coil must be equipped with a
- high limit control
- zone valve
- low limit control
- pressure relief device
16: Doors communicating with outside from a mechanical room must be?
- Self-closing, approved, fire door
- Self-closing, wooden, fire door
- Steel, approved, weather-stripped
- Self-closing, aligned, fire door
17: A hotel is considered a _______ occupancy.
- institutional
- mercantile
- residential
- commercial
18: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
19: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- Copper
- Aluminum
- PVC
20: Refrigerant restricted in 2004 but used for transition for decades:
- R-134A
- R-11
- R-123
- R-22
21: What type of relief valve is used on low pressure centrifugal compressor systems?
- Spring-loaded relief valve
- Rupture disc
- Purge relief
- None of the above
22: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- no flames shall be permitted
- gas masks must be worn
- explosion precautions must be taken
- the owner shall be informed
23: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
24: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Welded and seamed.
- Flanged and gasketed
- Insulated and cross broke
25: How far from the ground does a relief valve need to be?
- At least 15' above grade
- At least 20' above grade
- At least 25' above grade
- Not more than 3' above grade