Heat Pumps
On the ground
A Packaged heat pump installed in a manufactured home is likely to be located
True
A ductless split-system heat pump is ideal for heating and cooling in a single area (T/F)
The earth
A geothermal heat pump extracts heat from
In the liquid line
A heat pump by-flow filter dryer is installed
Electric heat
A heat pumps COP is a ratio that compares its efficiency at producing heat to the heat produce by
Ensures a complete defrost
A wind baffle is used to
35 deg
Above what temperature is typically more economical to heat with a compression heat than a gas or oil furnace
Auxiliary heat
Air to air heat pumps are usually equipped with some form of
False
An electric force-air heating units used a sealed heat exchanger (T/F)
8 to 1
Compression ratios in a heat pump compressor can reach as high as
SEER
Dividing a units cooling output in Btus during its normal annual usage period by the total energy consumed during the same time determines
Temper the indoor air
During defrost, supplemental heaters supply
False
Frost cannot form on the outdoor coil of an operating heat pump unless the temperature is below 32 deg or less (T/F)
Limit switch
Fusible links in an electric heater are design to act as a back-up for the
kW input x 3413
Heating COP is calculated by deviding Btuh output by
At or near 100% or the buildings full heat load
How are auxiliary electric heaters typically sized for a heat pump system
Multiply each kW by 3413
How are kilowatts converted to Btus
It reverses the refrigerant flow through the indoor and outdoor coils
How does the reversing valve switch a heat pump between the heating and cooling modes
100 psi
How much pressure difference is needed to move the piston inside a reversing valve
Compressor operation for heating is locked out
In a hybrid heat pump, when the outdoor temperature drops the balance point
Outdoor coil
In a split-system air-to-air heat pump, the coil that absorbs heat in the heating mode is referred to as
The roof
In southwestern United States, package heat pumps are often installed on
Vapor line
In the heating mode, refrigerant leave the compressor and enters the indoor coil through the
The condenser
In the heating mode, the indoor coil is
5kW
In what increments are electric resistive heaters package usually sized
The evaporator
On the heating mode, the outdoor coil is
Wireless remote
Room temperature control using a ductless split-system is often done with a
1
The COP of an electric resistance heater can never be higher than
Season
The Preference Factor provides the ratio of the total heating or cooling energy delivered to the energy consumed during a
The Air Conditioning and Refrigeration institute (ARI)
The SEER standard was develop by
Number of resistance heaters used
The heat output of an electric force-air heating system is determined by the
Spiraled wire
The heating elements in a electric force-air heating systems are made of
Prevent overheating
The pospuse or a limit switch in an electric heat fan coil is to
False
There is still heat available that a heat pump can extract, even if the air temperature drops to 0 deg K (T/F)
14
To achieve an ENERGY STAR rating, a package heat pump must have minimum SEER of
Compression heat is locked out
What happens in a electric heat pump heating system when emergency heat is selected
Protect agains the lost of charge
What is the primary purpose of a low-pressure control on a heat pump
A wind baffle
What might be required when installing a split system heat out door unit on a exposed roof top
False
When a particular heat pump is referred to as a water-source unit, it is generally accepted that it is circulating water thought the building to provide heat (T/F)
Heater is cold
When calculating the kW output of a resistive heating element, a correction factor is apply when
On the indoor and out door coils
Where do you install a fix-orifice metering device on a air-to-air split-system heat pump
Outdoor unit
Where is the reversing valve typically located in a split-system air-to-air heat pump
The indoor fan runs
Which condition occurs during the defrost cycle of a single stage air-to-air heat pump
Air-to-water
Which heat pump type is commonly used to supply domestic hot water
Plastic tubing
Which material is used in the buried ground loop of a geothermal heat pump
Proper water drainage
Which of the following is the most important reason to level the outdoor section of an air Sourse heat pump
Electronic defrost control uses logic to determine the need for a defrost cycle
Which of the following statements are correct
It is warmer in Florida
Why is the actual HSPF of a heat pump installed in Florida higher than the same unit installed in Vermont
