HVAC (EPA Certification Exam Section 608)
Save Q&A
How many types of HVAC certifications are there? - =There are 4 types.
What does a metering device do? - =The metering device causes a reduction in pressure, and
therefore a reduction in saturation temperature.
What is absorbed in the evaporator? - =Heat is absorbed in the evaporator.
What happens in the evaporator? - =Heat is absorbed in the evaporator and causes the refrigerant
to boil from liquid to vapor.
At the outlet of the evaporator the refrigerant is what? - =The refrigerant is now a low
temperature, low pressure vapor.
As the refrigerant expels heat, the refrigerant condenses to a what? - =It condenses to a liquid.
At the condenser outlet what pressure is the refrigerant? - =The refrigerant is a high pressure
liquid.
What is a metering device used for? - =The metering device causes a reduction in pressure, and
therefore a reduction in saturation temperature.
A system that uses a capillary tube or fixed bore metering device is usually equipped with a
blank? - =Accumulator which would be located in the suction line directly following the
evaporator.
A system that uses a thermostatic expansion valve is usually equipped with a what? - =A
receiver, which would be located in the liquid line directly following the condenser.
, The compound gauge is what color? - =Blue.
The high pressure gauge is what color? - =Red.
The blank measures low pressure (psig) and vacuum (inches Hg.). - =Compound gauge.
What does the high pressure gauge measure. - =It measures high side (discharge) pressure.
EPA regulations require that hoses be equipped with what? - =Low loss fittings that will
minimize refrigerant loss when hoses are disconnected.
The stratosphere is located where? - =Between 10 and 30 miles above sea level.
What is the stratosphere comprised of? - =Ozone.
An Ozone molecule consists of what? - =Three oxygen atoms (03).
What does Ozone protect us from? - =Harmful ultraviolet radiation.
What does Ozone help maintain? - =It helps maintain stable Earth temperatures.
Depletion of Ozone in the stratosphere causes what? - =Crop loss, Increase in eye diseases, Skin
cancer, Reduced marine life, Deforestation , Increased ground level ozone.
What depletes the ozone layer? - =CFC's and HCFC's.
When a chlorine atom meets with an Ozone molecule, it takes how many Oxygen atoms from the
Ozone? - =One.
Save Q&A
How many types of HVAC certifications are there? - =There are 4 types.
What does a metering device do? - =The metering device causes a reduction in pressure, and
therefore a reduction in saturation temperature.
What is absorbed in the evaporator? - =Heat is absorbed in the evaporator.
What happens in the evaporator? - =Heat is absorbed in the evaporator and causes the refrigerant
to boil from liquid to vapor.
At the outlet of the evaporator the refrigerant is what? - =The refrigerant is now a low
temperature, low pressure vapor.
As the refrigerant expels heat, the refrigerant condenses to a what? - =It condenses to a liquid.
At the condenser outlet what pressure is the refrigerant? - =The refrigerant is a high pressure
liquid.
What is a metering device used for? - =The metering device causes a reduction in pressure, and
therefore a reduction in saturation temperature.
A system that uses a capillary tube or fixed bore metering device is usually equipped with a
blank? - =Accumulator which would be located in the suction line directly following the
evaporator.
A system that uses a thermostatic expansion valve is usually equipped with a what? - =A
receiver, which would be located in the liquid line directly following the condenser.
, The compound gauge is what color? - =Blue.
The high pressure gauge is what color? - =Red.
The blank measures low pressure (psig) and vacuum (inches Hg.). - =Compound gauge.
What does the high pressure gauge measure. - =It measures high side (discharge) pressure.
EPA regulations require that hoses be equipped with what? - =Low loss fittings that will
minimize refrigerant loss when hoses are disconnected.
The stratosphere is located where? - =Between 10 and 30 miles above sea level.
What is the stratosphere comprised of? - =Ozone.
An Ozone molecule consists of what? - =Three oxygen atoms (03).
What does Ozone protect us from? - =Harmful ultraviolet radiation.
What does Ozone help maintain? - =It helps maintain stable Earth temperatures.
Depletion of Ozone in the stratosphere causes what? - =Crop loss, Increase in eye diseases, Skin
cancer, Reduced marine life, Deforestation , Increased ground level ozone.
What depletes the ozone layer? - =CFC's and HCFC's.
When a chlorine atom meets with an Ozone molecule, it takes how many Oxygen atoms from the
Ozone? - =One.
