Page |1
AIRC 1060 Exam | Questions with Correct
Answers | 100% Guaranteed Pass.
Compared to hot water heating coils, steam heating coils are: - CORRECT ✓✓ physically
smaller
unit 46: A type system that allows simultaneous heating and cooling to different parts of a
building is the - CORRECT ✓✓ heat recovery system
While multisplit units are limited to a single outdoor unit, large VRF systems can combine as
many as ________ outdoor units manifolded together to increase overall system capacity. -
CORRECT ✓✓ three outdoor units
Manufacturers recommend pressurizing VRF piping to ________ with nitrogen and
performing a 24 hour standing leak test - CORRECT ✓✓ 500 psig to 600 psig
To avoid the creation of oxides in the refrigeration lines of mini-split systems, the lines are
assembled: - CORRECT ✓✓ Using heavy-walled flare fittings
VRF systems are commercial systems. The outdoor units are normally designed to operate on
________ phase power and the indoor units on ________ phase power. - CORRECT ✓✓
three phase and single phase
Wiring for a four-port multisplit system runs: - CORRECT ✓✓ Using heavy-walled flare
fittings
It is possible for one multi-split indoor unit to heat while another cools - CORRECT ✓✓ no
VRF systems use a refrigeration network of: - CORRECT ✓✓ connecting all components of
the system
It is important when wiring multisplit systems that the indoor units connect to their
corresponding A, B, C, or D terminal block on the outdoor unit - CORRECT ✓✓ true
Standard wyes and tees are not used in VRF refrigeration networks as they introduce
turbulence and do not ensure even flow to both branches. - CORRECT ✓✓ true
, Page |2
Which system allows simultaneous heating or cooling? - CORRECT ✓✓ heat recovery
system
Most systems can operate with up to ________ feet of lines and a maximum of ________ feet
vertical distance between the indoor and outdoor units. - CORRECT ✓✓ 50 feet and 10 feet
Multisplit manufacturer's installation instructions will specify the maximum total installed
piping length which can be supported by the charge shipped in the unit. If additional piping is
installed the only correct way to charge the system is to: - CORRECT ✓✓ see the specified
amount of refigerant to add for each additional footof refrigerant line
Variable refrigerant flow systems use: - CORRECT ✓✓ multiple indoor units
Flare connections are used on mini-split systems to avoid oxidation in the lines and also to
avoid heating and destroying the sensitive electronic expansion valves use in the outdoor
units. - CORRECT ✓✓ false
On heat recovery systems: - CORRECT ✓✓ allow simultaneous operation of heating and
cooling
When factory supplied branch joints are not available for VRF refrigerant piping it is
permissible to use standard tees or wyes. - CORRECT ✓✓ false
The wiring connection between the outdoor and indoor unit typically has four wires. One
wire carries power, a second wire carries low voltage communication while a third wire
carries both line voltage power and low voltage communication. A fourth wire is utilized for
ground. - CORRECT ✓✓ true
Designing a heating and cooling system to accommodate load shifts can allow buildings to
operate with ________ capacity to meet the demand. - CORRECT ✓✓ less installed
Branch selectors are boxes in heat recovery VRF systems that allow: - CORRECT ✓✓ One
refrigerant line to feed multiple indoor units.
Like many multisplit units, variable refrigerant flow (VRF) systems use ________
compressors and electronic expansion valves to change the volume of refrigerant being
circulated in the system. - CORRECT ✓✓ inverted driven compressors
AIRC 1060 Exam | Questions with Correct
Answers | 100% Guaranteed Pass.
Compared to hot water heating coils, steam heating coils are: - CORRECT ✓✓ physically
smaller
unit 46: A type system that allows simultaneous heating and cooling to different parts of a
building is the - CORRECT ✓✓ heat recovery system
While multisplit units are limited to a single outdoor unit, large VRF systems can combine as
many as ________ outdoor units manifolded together to increase overall system capacity. -
CORRECT ✓✓ three outdoor units
Manufacturers recommend pressurizing VRF piping to ________ with nitrogen and
performing a 24 hour standing leak test - CORRECT ✓✓ 500 psig to 600 psig
To avoid the creation of oxides in the refrigeration lines of mini-split systems, the lines are
assembled: - CORRECT ✓✓ Using heavy-walled flare fittings
VRF systems are commercial systems. The outdoor units are normally designed to operate on
________ phase power and the indoor units on ________ phase power. - CORRECT ✓✓
three phase and single phase
Wiring for a four-port multisplit system runs: - CORRECT ✓✓ Using heavy-walled flare
fittings
It is possible for one multi-split indoor unit to heat while another cools - CORRECT ✓✓ no
VRF systems use a refrigeration network of: - CORRECT ✓✓ connecting all components of
the system
It is important when wiring multisplit systems that the indoor units connect to their
corresponding A, B, C, or D terminal block on the outdoor unit - CORRECT ✓✓ true
Standard wyes and tees are not used in VRF refrigeration networks as they introduce
turbulence and do not ensure even flow to both branches. - CORRECT ✓✓ true
, Page |2
Which system allows simultaneous heating or cooling? - CORRECT ✓✓ heat recovery
system
Most systems can operate with up to ________ feet of lines and a maximum of ________ feet
vertical distance between the indoor and outdoor units. - CORRECT ✓✓ 50 feet and 10 feet
Multisplit manufacturer's installation instructions will specify the maximum total installed
piping length which can be supported by the charge shipped in the unit. If additional piping is
installed the only correct way to charge the system is to: - CORRECT ✓✓ see the specified
amount of refigerant to add for each additional footof refrigerant line
Variable refrigerant flow systems use: - CORRECT ✓✓ multiple indoor units
Flare connections are used on mini-split systems to avoid oxidation in the lines and also to
avoid heating and destroying the sensitive electronic expansion valves use in the outdoor
units. - CORRECT ✓✓ false
On heat recovery systems: - CORRECT ✓✓ allow simultaneous operation of heating and
cooling
When factory supplied branch joints are not available for VRF refrigerant piping it is
permissible to use standard tees or wyes. - CORRECT ✓✓ false
The wiring connection between the outdoor and indoor unit typically has four wires. One
wire carries power, a second wire carries low voltage communication while a third wire
carries both line voltage power and low voltage communication. A fourth wire is utilized for
ground. - CORRECT ✓✓ true
Designing a heating and cooling system to accommodate load shifts can allow buildings to
operate with ________ capacity to meet the demand. - CORRECT ✓✓ less installed
Branch selectors are boxes in heat recovery VRF systems that allow: - CORRECT ✓✓ One
refrigerant line to feed multiple indoor units.
Like many multisplit units, variable refrigerant flow (VRF) systems use ________
compressors and electronic expansion valves to change the volume of refrigerant being
circulated in the system. - CORRECT ✓✓ inverted driven compressors
