LGWP A2L QUESTIONS WITH ACCURATE ANSWERS
__________ is a near-azeotropic, refrigerant blend that has a GWP of 466. It is an
HFC/HFO blend made up HFC-32 and HFO-1234yf. It is charged as a liquid to avoid
fractionation and has a very low temperature glide (about 2.5°F). correct answer
R-454B
___________ is an HFO refrigerant with a GWP of less than 1. It is primarily used
in automotive air conditioning systems but is also used as a component in many
other HFC/HFO blends. correct answer R-1234yf
________________________ can form when any fluorine-containing refrigerant
undergoes complete or incomplete combustion, or thermal decomposition.
correct answer Hydrogen fluoride (HF)
__________________________ is a measurement of the amount of heat released
when a substance, in this case, a refrigerant, burns. correct answer Heat of
combustion (HOC)
___________________________ are designed and installed to prevent
accumulation and/or ignition of flammable refrigerant vapors should a leak occur.
correct answer Mitigation strategies
___________________________ can activate mechanical ventilation systems,
activate a solenoid to force the system into a pump down, de-energize the system
completely, or a combination of mitigation responses using control logic
electronics. correct answer Active refrigerant sensors
, ________________________________ components such as the contactor or
capacitor are designed to be enclosed, isolating the electrical contacts from the
atmosphere. correct answer Intrinsically safe
_________________________________should be used to prevent unauthorized
access to the refrigerant circuit. correct answer Locking refrigerant caps
__________is a single-compound, HFC refrigerant that has a GWP of 675. It can
be charged as a liquid or a vapor and does not fractionate or have a temperature
glide. correct answer R-32
20. When charging a new A2L system,
_______________________________________________ must be recorded on a
label affixed to the unit by the installing technician. correct answer the total
charge weight (and date of charge)
A2L systems are designed with electrical components that
are________________________. correct answer intrinsically safe (IS).
Accumulation of a flammable refrigerant in a confined space can lead to a
_______________________ or _________________________. correct answer a
severe ignition event or asphyxiation.
After installation, the refrigerant piping must
_______________________________________. correct answer pressurized to
perform a leak test
__________ is a near-azeotropic, refrigerant blend that has a GWP of 466. It is an
HFC/HFO blend made up HFC-32 and HFO-1234yf. It is charged as a liquid to avoid
fractionation and has a very low temperature glide (about 2.5°F). correct answer
R-454B
___________ is an HFO refrigerant with a GWP of less than 1. It is primarily used
in automotive air conditioning systems but is also used as a component in many
other HFC/HFO blends. correct answer R-1234yf
________________________ can form when any fluorine-containing refrigerant
undergoes complete or incomplete combustion, or thermal decomposition.
correct answer Hydrogen fluoride (HF)
__________________________ is a measurement of the amount of heat released
when a substance, in this case, a refrigerant, burns. correct answer Heat of
combustion (HOC)
___________________________ are designed and installed to prevent
accumulation and/or ignition of flammable refrigerant vapors should a leak occur.
correct answer Mitigation strategies
___________________________ can activate mechanical ventilation systems,
activate a solenoid to force the system into a pump down, de-energize the system
completely, or a combination of mitigation responses using control logic
electronics. correct answer Active refrigerant sensors
, ________________________________ components such as the contactor or
capacitor are designed to be enclosed, isolating the electrical contacts from the
atmosphere. correct answer Intrinsically safe
_________________________________should be used to prevent unauthorized
access to the refrigerant circuit. correct answer Locking refrigerant caps
__________is a single-compound, HFC refrigerant that has a GWP of 675. It can
be charged as a liquid or a vapor and does not fractionate or have a temperature
glide. correct answer R-32
20. When charging a new A2L system,
_______________________________________________ must be recorded on a
label affixed to the unit by the installing technician. correct answer the total
charge weight (and date of charge)
A2L systems are designed with electrical components that
are________________________. correct answer intrinsically safe (IS).
Accumulation of a flammable refrigerant in a confined space can lead to a
_______________________ or _________________________. correct answer a
severe ignition event or asphyxiation.
After installation, the refrigerant piping must
_______________________________________. correct answer pressurized to
perform a leak test
