Topics: ASHRAE/CMR
1: Machinery rooms must be vented to ______?
- basement
- outdoors
- neutralizing tank
- unoccupied spaces
2: What is an egress?
- A code violation
- A valve put on the low side of the system to prevent frosting
- An entrance or exit
- An escape route
3: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with R-718
- Flush with R-11
- Flush with ammonia
- Flush with RX-11
4: What refrigerant doesn't have to be classifted?
- R-134a
- R-717
- R-718
- R-711
5: All electrical work done on refrigeration systems must comply with
- Department of Energy
- ASHREA-15 Section 9.2.1
- OSHA
- NEC and Massachusetts Modifications
6: Class T machine room
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall include closets used for setting equipment
- has no flame producing apparatus permanently installed
- shall have remote controls to stop the action of the refrigerant compressor
7: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
8: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
9: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 15
- 10
- III
- 25
10: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 36"
- 24"
- 18"
11: A class B1 refrigerant is considered
- non-toxic and non-flammable
- non-toxic but highly flammable
- toxic but non-flammable
- toxic and somewhat flammable
12: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 75
- 50
- 15
- 20
13: What refrigerant is an inorganic compound?
- Ammonia
- R-132A
- R-22
- R-410A
14: Each machinery room shall contain
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- high and low pressure controls
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
15: NH3 is
- R-718
- ammonia
- lithium bromide
- R-508A
16: What type of material can't be used on the outlet of a relief valve?
- Stainless steel
- Magnesium alloy
- Copper
- PVC
17: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 99%
- 80%
- 75%
- 90%
18: The color code of a tank of ammonia is
- white
- lavender
- silver
- light green
19: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-12
- R-11
20: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- phosgene gas sening
- A group sensing
- refrigerant sensing
- CO Sensing
21: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class M machinery room
- Class T machinery room
- Class A machinery room
- Class B machinery room
22: What would be the classification for Stop & Shop grocery store?
- Instituional
- Place of assembly
- Large mercantile
- Industrial
23: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- there is no Group B1 refrigerants
- the same
- higher
- lower
24: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
25: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 24
- 36
- 18
- 48