Topics: ASHRAE/CMR
1: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be authorized by a notarized insurance company
- shall be posted on the compressor shell or electrical panel at the unit
- shall be $20 and an additional fee of $1 for each tone above 20 tons
2: 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.
- CFC-11
- ammonia
- Lithium bromide
- HCFC-123
3: R-22 is considered a(n)
- CFC
- HCFCH
- HFC
- HCFC
4: Can ammonia be used on domestic system?
- yes
- no, unless there is proper ventilation system installed
- yes, for systems under 10 tons
- no
5: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
6: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 25' above grade
- At least 15' above grade
- At least 20' above grade
7: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- higher
- the same
- there is no Group B1 refrigerants
- lower
8: A hotel is considered a _______ occupancy.
- residential
- mercantile
- commercial
- institutional
9: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
10: Each machinery room shall contain
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- high and low pressure controls
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
11: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UM or UL
- UV or UR
- UL and UR
12: What is the minimum height refrigeration piping should be placed against walls?
- 6'
- 7.25'
- Ceiling height
- 72"
13: Where must a refrigeration contractor's license number be displayed?
- Trucks, license plates, and uniforms
- Truck, office, every job, and on all equipment
- Trucks, invoices, and advertising
- Uniforms, checks, and invoices.
14: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)
- Pressure gauge
- Temperature gauge
- Sight glass gauge
- All of the above
15: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 20'
- At least 40'
- There is no minimum for relief valve and windows.
- At least 30'
16: What is an egress?
- A code violation
- A valve put on the low side of the system to prevent frosting
- An escape route
- An entrance or exit
17: What type refrigerant is NOT ozone depleting?
- HFC
- CFC
- Halon
- HCFC
18: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- PVC
- Copper
- Aluminum
19: How many CFMs are required per square foot of commercial office occupied space
- 15 CFM
- 20 CFM
- .5 CFM
- 5 CFM
20: What type of copper is not permitted on refrigeration systems?
- Type M
- Type L
- Type N
- Type K
21: Halogen refrigerants are corrosive to which type of metal?
- magnesium
- stainless steel
- black iron
- copper
22: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 13.9 lbs
- 6.6 lbs
- 22 lbs
- 44 lbs
23: Direct systems using Group II refrigerants
- shall not be used for air condition for human comfort
- shall be installed in Class T machinery rooms
- shall be installed per instruction of the AHJ
- shall be allowed to be used for human comfort.
24: 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)
- public assembly occupancy
- illegal occupancy
- commercial occupancy
- institutional occupancy
25: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above