Week 1 Heat Pump Unit 69,70 Exam

What is the main difference between a heat pump and a fossil fuel furnace?

• Heat pumps are easier to install.

• Fossil fuel furnaces have been around longer.

• Fossil fuel furnaces are hotter.

• Heat pumps move heat instead of creating it.hea

How can an air-source heat pump heat when the outdoor temperature is cold?

• All heating is accomplished with electrical resistance heaters, so the air temperature is irrelevant.

• The friction of the air passing over the outdoor coil raises the temperature.

• Air-source heat pumps only use the outdoor air in the cooling season.

• All molecules contain some heat until they reach absolute zero (-460°F).a

The heat source for an air-source heat pump is:

• The air inside the house.

• The air outside the house.

• The water in the water loop.

• Electric strip heat.

The heat sink for an air-source heat pump is:

• The air inside the house.

• The air outside the house.

• The water in the water loop.

• Electric strip heat.

Heat pumps are available in different physical configurations to match many different applications, including packaged units, split systems, and:

• Chiller systems.

• Gas systems

• Ductless mini-split systems.

• Absorption systems.

Why are both lines of a mini-split system insulated?

• Because it can connect up to 8 sections

• Because there is only one metering device

• Because they do not have any ductwork

• Because the entire unit is outdoors

Why are the coils in an air-source heat pump referred to as the outdoor coil and indoor coil instead of the condenser and evaporator?

• Their function (evaporator or condenser) reverses when the unit changes from cooling to heating.

• Refrigerant does not evaporate or condense in a heat pump coil.

• Because both the coils in a heat pump coils are identical.

• It can sometimes be difficult to determine the exact location of the coils.

The outdoor coil is the condenser in:

• The cooling cycle.

• The heating cycle.

• Both the cooling and heating cycles.

• Neither the heating nor cooling cycles.

The indoor coil is the condenser in:

• The cooling cycle.

• The heating cycle.

• Both the cooling and defrost cycles.

• Both the heating and defrost cycles.

The outdoor coil is the evaporator in:

• The heating cycle.

• The cooling cycle.

• Both the cooling and defrost cycles.

• Both the heating and defrost cycles.