Prior to beginning work on a jobsite where equipment that is charged with a
flammable refrigerant will be used;
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the jobsite should be evaluated for safety hazards such as possible ignition
sources or the presence of flammable vapors.
A metric that is used to measure a refrigerant's environmental impact as a greenhouse
gas is;
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, Global Warming Potential (GWP).
11 - To avoid fractionation, blended refrigerants should be;
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charged as a liquid
29 - Which of the following is/are used to determine the maximum concentration of a
refrigerant allowed in an occupied space?
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RCL
When sizing and selecting system components for equipment that is charged with a
zeotropic or near-azeotropic refrigerant blend, which of the following methods
should be used?
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midpoint
43 - Patterns of adding refrigerant to an A2L system of at least once per three-year
period, should be considered;
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proof of a leak.
A refrigerant blend behaves like a single compound refrigerant is called a(n);
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azeotropic blend.
When calculating the superheat of a system charged with a zeotropic or near-
azeotropic refrigerant blend, which of the following values should be used?
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dew point
5 - Once a flammable refrigerant has been recovered and stored in a recovery
cylinder;
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Safe Distances
40 - Piping for an A2L system that is installed inside of a wall or floor, where it passes
thru joists or studs, must be;
flammable refrigerant will be used;
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the jobsite should be evaluated for safety hazards such as possible ignition
sources or the presence of flammable vapors.
A metric that is used to measure a refrigerant's environmental impact as a greenhouse
gas is;
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, Global Warming Potential (GWP).
11 - To avoid fractionation, blended refrigerants should be;
Give this one a try later!
charged as a liquid
29 - Which of the following is/are used to determine the maximum concentration of a
refrigerant allowed in an occupied space?
Give this one a try later!
RCL
When sizing and selecting system components for equipment that is charged with a
zeotropic or near-azeotropic refrigerant blend, which of the following methods
should be used?
Give this one a try later!
midpoint
43 - Patterns of adding refrigerant to an A2L system of at least once per three-year
period, should be considered;
, Give this one a try later!
proof of a leak.
A refrigerant blend behaves like a single compound refrigerant is called a(n);
Give this one a try later!
azeotropic blend.
When calculating the superheat of a system charged with a zeotropic or near-
azeotropic refrigerant blend, which of the following values should be used?
Give this one a try later!
dew point
5 - Once a flammable refrigerant has been recovered and stored in a recovery
cylinder;
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Safe Distances
40 - Piping for an A2L system that is installed inside of a wall or floor, where it passes
thru joists or studs, must be;
