Topics: ASHRAE/CMR
1: What is R-22?
- CCFCM
- Chlorofluoromethane
- Chlorodifluoromethane
- HFC
2: How are refrigerant blends classified?
- Based on the oil used
- Based on best case Fractionation
- Based on worst case fractionation
- Blends don't have to be classified
3: R-717 is
- trichloromethane
- carbon dioxide
- ammonia
- water
4: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100,000
- 10,000
- 100
- 1,000
5: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 20'
- 25'
- 15'
6: How much refrigerant can be stored in a mechanical room outside of the system?
- 200
- 330
- 150
- 100
7: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Zinc
- Magnesium
- Nickel
8: 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
9: A restaurant is classified as a
- mixed occupancy
- large mercantile occupancy
- public assembly occupancy
- commercial occupancy
10: Class 3 refrigerants are
- non-toxic
- highly flammable
- toxic
- non-flammable
11: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
12: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
13: What refrigerant is an inorganic compound?
- R-22
- R-410A
- R-132A
- Ammonia
14: When should a relief valve start to function?
- Before the purge station discharges
- At it's set pressure
- 10 psi before it's set pressure
- Two times it's working pressure
15: How many gallons of water do you need per pound of ammonia?
- 50
- 100
- 10
- 1
16: What is a Category "D" fluid?
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
- A typical refrigerant used on newer air conditioning and heat pump ssytems
- Any fluid that exceeds 150 psig and has design temperature of over 366F
17: A hotel is considered a _______ occupancy.
- commercial
- mercantile
- institutional
- residential
18: How many different groups of refrigerants are there?
- 11
- 3
- 15
- 7
19: The Department that certifies the transportation of refrigerant is the
- EPO
- DOT
- EPA
- RSES
20: When an inspection is needed, how often must it be done?
- every 24 months
- annually
- every 36 months
- every 18 months
21: A declaration test is needed when the system contains more than
- 110 lbs
- 65 lbs
- 120 lbs
- 55 lbs
22: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the outdoors
- the mechanical room housing the refrigeration system
- Machinery rooms need not be vented
- the return air ducted system
23: Ammonia (NH3) is a group III refrigerant
- True
- False
24: What type of copper is not permitted on refrigeration systems?
- Type M
- Type K
- Type L
- Type N
25: 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 50 persons congregate on levels above of 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 or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise