System install and commissioning pt1

What is the primary factor in selecting a condensing unit with a compressor?

• Capacity

• Color

• Weight

• Shape

What is the purpose of a liquid line filter in a refrigeration system?

• Cools the refrigerant

• Controls the temperature

• Absorbs water and filters contaminants

• Increases pressure

What is the function of a solenoid valve in a refrigerant system?

• Start and stop the flow of refrigerant

• Increase pressure

• Generate heat

• Control humidity

Why is copper not suitable for use with ammonia refrigerant?

• Copper is too expensive

• Ammonia reacts with copper causing corrosion

• Ammonia reacts with copper causing leaks

• Copper is too heavy

What is the purpose of annealing copper in refrigeration piping?

• To cool the copper

• To change the color of the copper

• To increase the copper's strength

• To soften the copper for bending

What is the role of a TXV metering device in a refrigeration system?

• Filters contaminants

• Divides high-side from low-side pressures

• Increases pressure

• Cools the refrigerant

What is the main function of a crankcase heater in a refrigeration system?

• Prevents refrigerant migration during low ambient conditions

• Increases humidity

• Cools the compressor

• Filters the refrigerant

Why is it important to have a step down transformer in the control circuit of an air conditioning system?

• To provide the correct voltage for components

• To increase the temperature

• To control humidity levels

• To reduce noise

What is the purpose of a sight glass in a refrigeration system?

• Permits observation of liquid refrigerant

• Filters contaminants

• Increases pressure

• Controls temperature

What is the advantage of an N shape evaporator coil over an A shaped coil?

• Lower cost

• Better color

• Higher capacity

• More compact configuration