Topics: ASHRAE/CMR
1: What would be the classification of a church?
- Industrial
- Place of assembly
- Large mercantile
- Institutional
2: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
3: A relief valve discharge capacity is rated in
- PSIG
- Pounds of air per minute.
- PSIA
- temperature minus pounds of air per second divided by release rate squared
4: What is the intention of the word “should” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the Above
5: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 20
- 50
- 75
6: What is an egress?
- A code violation
- An entrance or exit
- A valve put on the low side of the system to prevent frosting
- An escape route
7: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- high side of the system
- the liquid side of the system
- the vapor side of the system
- low side of the system
8: A professional or office building would be considered what type of occupancy?
- mercantile
- public assembly
- commercial
- business
9: Ammonia is under what safety classification?
- B3
- B1
- B2
- A3
10: Direct systems using Group II refrigerants
- shall be allowed to be used for human comfort.
- shall not be used for air condition for human comfort
- shall be installed per instruction of the AHJ
- shall be installed in Class T machinery rooms
11: Where must a refrigeration contractor's license number be displayed?
- Trucks, license plates, and uniforms
- Uniforms, checks, and invoices.
- Trucks, invoices, and advertising
- Truck, office, every job, and on all equipment
12: Class T machine room
- has no flame producing apparatus permanently installed
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall have remote controls to stop the action of the refrigerant compressor
- shall include closets used for setting equipment
13: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 25
- 10
- 15
- 20
14: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
15: Can ammonia be used on domestic system?
- yes
- yes, for systems under 10 tons
- no
- no, unless there is proper ventilation system installed
16: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
17: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- low pressure
- design pressure
- high pressure
- critical pressure
18: All electrical work done on refrigeration systems must comply with
- ASHREA-15 Section 9.2.1
- Department of Energy
- OSHA
- NEC and Massachusetts Modifications
19: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
20: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and the stop valve
- between the compressor and oil separator
- between the compressor and reciever
21: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or less
22: Halo-carbon refrigerants cannot be used with what material?
- Aluminum
- Stainless Steel
- Magnesium alloy
- Copper
23: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the occupied space
- is such that a leak of refrigerant from failed connections will enter the unoccupied space
- is a system highly likely to leak from 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
24: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
25: R-717 is
- ammonia
- trichloromethane
- carbon dioxide
- water