How to find target superheat.

What is the formula for calculating Total Superheat?

• Sat Temp + Actual Vapor Line Temp

• Actual Vapor Line Temp – Sat Temp

• Sat Temp – Actual Vapor Line Temp

• Actual Vapor Line Temp + Sat Temp

Where does superheat first occur in a split system air conditioner?

• Metering device

• Compressor

• Evaporator coil

• Condenser coil

What is the primary function of the compressor in an air conditioning system?

• Reject heat into the air

• Reduce the pressure of the refrigerant

• Increase the pressure of the refrigerant

• Absorb heat from the air

What state is the refrigerant in when it is referred to as 'saturated'?

• Liquid

• Solid

• Mixed state of liquid and vapor

• Vapor

What is the typical mixture of refrigerant when it enters the evaporator coil?

• 100% liquid

• 100% vapor

• 50% liquid, 50% vapor

• 80% liquid, 20% flash gas

What is the term for the temperature difference between the air entering and exiting the evaporator coil?

• Subcooling

• Superheat

• Delta T

• Total Superheat

What is the purpose of the metering device in an air conditioning system?

• Reject heat into the air

• Reduce the pressure of the refrigerant

• Absorb heat from the air

• Increase the pressure of the refrigerant

What is the target airflow for the indoor coil per 12,000 BTU/HR of heat removal capacity?

• 200-300 CFM

• 425-500 CFM

• 300-350 CFM

• 350-425 CFM

What must be done before checking the refrigerant charge with the total superheat method?

• Disconnect the gauges

• Turn off the unit

• Ensure the indoor and outdoor temps are below 70°F

• Purge the air from the hoses

What does a higher actual total superheat than the target superheat indicate?

• Overcharged refrigerant level

• Undercharged refrigerant level

• Faulty compressor

• Correct refrigerant level