Fujitsu AOU24RGLX Installation Manual
AIR CONDITIONER
PART No. 9374995592-02
English
OUTDOOR UNIT
FrançaisEspañol
APPAREIL EXTÉRIEUR
UNIDAD EXTERIOR
INSTALLATION MANUAL
For authorized service personnel only.
MANUEL D’INSTALLATION
MANUAL DE INSTALACIÓN
Pour le personnel d’entretien autorisé uniquement.
Únicamente para personal de servicio autorizado.
PART No. 9374995592-02
English
OUTDOOR UNIT
FrançaisEspañol
APPAREIL EXTÉRIEUR
UNIDAD EXTERIOR
INSTALLATION MANUAL
For authorized service personnel only.
MANUEL D’INSTALLATION
MANUAL DE INSTALACIÓN
Pour le personnel d’entretien autorisé uniquement.
Únicamente para personal de servicio autorizado.
En-2
1.2. Special precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to
the wiring diagram and these instructions when wiring. Improper connections and
inadequate earthing (grounding) can cause accidental injury or death.
• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary
to construct a strong wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating” that can cause
dripping and water damage to walls and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the
outdoor unit. This prevents water damage and abnormal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before
connecting them, then tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before opening the refrigerant valves.
NOTES:
Depending on the system type, liquid and gas lines may be either narrow or wide.
Therefore, to avoid confusion the refrigerant tubing for your particular model is specified
as either “small” or “large” rather than as “liquid” or “gas”.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening the unit to check
or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operating manual.
WARNING
Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 10 minutes or
more before touching electrical components.
• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this Manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this Manual, together with the operating manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the
unit.
WARNING
• Installation of this product must be done by experienced service technicians or
professional installers only in accordance with this manual. Installation by non-
professional or improper installation of the product may cause serious accidents
such as injury, water leakage, electric shock, or fire. If the outdoor unit is installed in
disregard of the instructions in the installation manual, it will void the manufacturer’s
warranty.
• Do not turn on the power until all work has been completed. Turning on the power
before the work is completed can cause serious accidents such as electric shock or
fire.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct flame, it may produce a toxic gas.
• Installation work must be performed in accordance with regulations, codes, or
standards for electrical wiring and equipment in each country, region, or the installing
place.
• Do not use this equipment with air or any other unspecified refrigerant in the
refrigerant lines. Excess pressure can cause a rupture.
• During installation, make sure that the refrigerant pipe is attached firmly before you
run the compressor. Do not operate the compressor under the condition of refrigerant
piping not attached properly with 3-way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to rupture and even injury.
• When installing and relocating the air conditioner, do not mix gases other than the
specified refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause rupture, injury, etc.
• For the air conditioner to work appropriately, install it as written in this manual.
Contents
1. SAFETY PRECAUTIONS ............................................................................................ 2
1.1. IMPORTANT! Please read before starting ......................................................... 2
1.2. Special precautions ............................................................................................ 2
2. ABOUT THIS PRODUCT............................................................................................. 3
2.1. Precautions for using R410A refrigerant ............................................................ 3
2.2. Special tools for R410A refrigerant .................................................................... 3
2.3. Accessories ........................................................................................................ 3
2.4. Operating range ................................................................................................. 3
3. GENERAL SPECIFICATION ....................................................................................... 4
3.1. Selecting circuit breaker and wiring ................................................................... 4
3.2. Selecting the pipe material ................................................................................. 4
3.3. Connection pipe requirement ............................................................................. 4
3.4. Additional charging ............................................................................................. 4
4. INSTALLATION WORK ............................................................................................... 4
4.1. Selecting an installation location ........................................................................ 4
4.2. Installation dimensions ....................................................................................... 4
4.3. Transporting the unit .......................................................................................... 5
4.4. Drain installation ................................................................................................. 6
4.5. Secure the unit ................................................................................................... 6
5. PIPE INSTALLATION .................................................................................................. 6
5.1. Brazing ............................................................................................................... 6
5.2. Flare connection (pipe connection) .................................................................... 6
5.3. Sealing test ........................................................................................................ 7
5.4. Vacuum process ................................................................................................ 7
5.5. Additional charge ............................................................................................... 8
5.6. Gas leakage inspection ...................................................................................... 8
6. ELECTRICAL WIRING ................................................................................................ 8
6.1. Notes for electrical wiring ................................................................................... 8
7. TEST RUN ................................................................................................................... 9
8. PUMP DOWN ............................................................................................................ 10
1. SAFETY PRECAUTIONS
1.1. IMPORTANT! Please read before starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all warning and caution notices given in this manual.
WARNING: This symbol refers to a hazard or unsafe practice which can result in
severe personal injury or death.
CAUTION: This symbol refers to a hazard or unsafe practice which can result in
personal injury and the potential for product or property damage.
• Hazard alerting symbols
: Electrical : Safety/alert
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certified
dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.
INSTALLATION MANUAL
PART No. 9374995592-02
OUTDOOR UNIT
NOTES: This manual describes how to install the air conditioner described above.
Handling and installation shall only be done by professionals as outlined in this
manual.
• Installation must be performed in accordance with the requirement of NEC (National
Electrical Code) and CEC (Canadian Electrical Code) by authorized personnel only.
• All products are manufactured to metric units and tolerances. United States customary
units are provided for reference only. In cases where exact dimensions and tolerances
are required, always refer to metric units.
1.2. Special precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to
the wiring diagram and these instructions when wiring. Improper connections and
inadequate earthing (grounding) can cause accidental injury or death.
• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary
to construct a strong wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating” that can cause
dripping and water damage to walls and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the
outdoor unit. This prevents water damage and abnormal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before
connecting them, then tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before opening the refrigerant valves.
NOTES:
Depending on the system type, liquid and gas lines may be either narrow or wide.
Therefore, to avoid confusion the refrigerant tubing for your particular model is specified
as either “small” or “large” rather than as “liquid” or “gas”.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening the unit to check
or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operating manual.
WARNING
Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 10 minutes or
more before touching electrical components.
• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this Manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this Manual, together with the operating manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the
unit.
WARNING
• Installation of this product must be done by experienced service technicians or
professional installers only in accordance with this manual. Installation by non-
professional or improper installation of the product may cause serious accidents
such as injury, water leakage, electric shock, or fire. If the outdoor unit is installed in
disregard of the instructions in the installation manual, it will void the manufacturer’s
warranty.
• Do not turn on the power until all work has been completed. Turning on the power
before the work is completed can cause serious accidents such as electric shock or
fire.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct flame, it may produce a toxic gas.
• Installation work must be performed in accordance with regulations, codes, or
standards for electrical wiring and equipment in each country, region, or the installing
place.
• Do not use this equipment with air or any other unspecified refrigerant in the
refrigerant lines. Excess pressure can cause a rupture.
• During installation, make sure that the refrigerant pipe is attached firmly before you
run the compressor. Do not operate the compressor under the condition of refrigerant
piping not attached properly with 3-way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to rupture and even injury.
• When installing and relocating the air conditioner, do not mix gases other than the
specified refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause rupture, injury, etc.
• For the air conditioner to work appropriately, install it as written in this manual.
Contents
1. SAFETY PRECAUTIONS ............................................................................................ 2
1.1. IMPORTANT! Please read before starting ......................................................... 2
1.2. Special precautions ............................................................................................ 2
2. ABOUT THIS PRODUCT............................................................................................. 3
2.1. Precautions for using R410A refrigerant ............................................................ 3
2.2. Special tools for R410A refrigerant .................................................................... 3
2.3. Accessories ........................................................................................................ 3
2.4. Operating range ................................................................................................. 3
3. GENERAL SPECIFICATION ....................................................................................... 4
3.1. Selecting circuit breaker and wiring ................................................................... 4
3.2. Selecting the pipe material ................................................................................. 4
3.3. Connection pipe requirement ............................................................................. 4
3.4. Additional charging ............................................................................................. 4
4. INSTALLATION WORK ............................................................................................... 4
4.1. Selecting an installation location ........................................................................ 4
4.2. Installation dimensions ....................................................................................... 4
4.3. Transporting the unit .......................................................................................... 5
4.4. Drain installation ................................................................................................. 6
4.5. Secure the unit ................................................................................................... 6
5. PIPE INSTALLATION .................................................................................................. 6
5.1. Brazing ............................................................................................................... 6
5.2. Flare connection (pipe connection) .................................................................... 6
5.3. Sealing test ........................................................................................................ 7
5.4. Vacuum process ................................................................................................ 7
5.5. Additional charge ............................................................................................... 8
5.6. Gas leakage inspection ...................................................................................... 8
6. ELECTRICAL WIRING ................................................................................................ 8
6.1. Notes for electrical wiring ................................................................................... 8
7. TEST RUN ................................................................................................................... 9
8. PUMP DOWN ............................................................................................................ 10
1. SAFETY PRECAUTIONS
1.1. IMPORTANT! Please read before starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all warning and caution notices given in this manual.
WARNING: This symbol refers to a hazard or unsafe practice which can result in
severe personal injury or death.
CAUTION: This symbol refers to a hazard or unsafe practice which can result in
personal injury and the potential for product or property damage.
• Hazard alerting symbols
: Electrical : Safety/alert
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certified
dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.
INSTALLATION MANUAL
PART No. 9374995592-02
OUTDOOR UNIT
NOTES: This manual describes how to install the air conditioner described above.
Handling and installation shall only be done by professionals as outlined in this
manual.
• Installation must be performed in accordance with the requirement of NEC (National
Electrical Code) and CEC (Canadian Electrical Code) by authorized personnel only.
• All products are manufactured to metric units and tolerances. United States customary
units are provided for reference only. In cases where exact dimensions and tolerances
are required, always refer to metric units.
En-3
- Models that use refrigerant R410A have a different charging port thread diameter
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2-20 UNF.]
- Be careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
- When charging the refrigerant, take into account the slight change in the
composition of the gas and liquid phases. And always charge from the liquid phase
where refrigerant composition is stable.
2.2. Special tools for R410A refrigerant
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifically for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than R22, failure to use dedicated
piping material or improper installation can cause rupture or injury. Furthermore, it can
cause serious accidents such as water leakage, electric shock, or fire.
Tool name Changes
Gauge manifold Pressure is high and cannot be measured with a conventional
gauge. To prevent erroneous mixing of other refrigerants, the
diameter of each port has been changed.
It is recommended the gauge with seals –0.1 to 5.3 MPa (-1 to
53 bar) for high pressure. –0.1 to 3.8 MPa (-1 to 38 bar) for low
pressure.
Charging hose To increase pressure resistance, the hose material and base
size were changed.
Vacuum pump A conventional vacuum pump can be used by installing a
vacuum pump adapter.
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
2.3. Accessories
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts. The use of non-prescribed parts can cause serious accidents such as
the unit falling, water leakage, electric shock, or fire.
Following installation parts are supplied. Use them as required.
Keep this manual in a safe place, and do not discard any other accessories until the
installation work has been completed.
Name and shape Q’ty Description
Installation
manual 1
This manual
Drain pipe
1
(Reverse cycle model only)
Drain cap
5 —
The following items are necessary to install this air conditioner. (The items are not
included with the air conditioner and must be purchased separately.)
Name
Connection pipe assembly Decorative tape Saddle Tapping screws
Connection cable Vinyl tape Drain hose Sealant
Wall pipe Wall cap M10 bold, nut
2.4. Operating range
Outdoor Cooling/Dry Mode Heating Mode
Temperature -5 to 115°F
(-20 to 46°C)
-5 to 75°F
(-20 to 24°C)
• If operated at a temperature beyond the specified operating range, a protection circuit
may be activated to stop the operation of the unit.
• To connect the indoor unit and outdoor unit, use air conditioner piping and cables
available locally as standard parts.
This manual describes proper connections using such installation set.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
• Do not use an extension cable.
• Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fire by poor connection, insufficient insulation or over current.
• Do not purge the air with refrigerants but use a vacuum pump to vacuum the
installation.
• There is no extra refrigerant in the outdoor unit for air purging.
• Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition
sources (for example: open flames, an operating gas appliance or an operating
electric heater.)
• Using the same vacuum pump for different refrigerants may damage the vacuum
pump or the unit.
• Use a clean gauge manifold, vacuum pump and charging hose for R410A exclusively.
• Do not modify this unit, such as opening a hole in the cabinet.
• During the pump-down operation, make sure that the compressor is turned off before
you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way or
3-way valves open. This may cause abnormal pressure in the refrigeration cycle that
leads to rupture and even injury.
• Dispose of the packing materials safely. Tear and dispose of the plastic packing bags
so that children cannot play with them. There is the danger of suffocation if children
play with the original plastic bags.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
• To avoid danger of suffocation, keep the plastic bag or thin film used as the packaging
material away from young children.
• Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
CAUTION
• This unit must be installed by qualified personnel with a capacity certification of
handling refrigerant fluids. Refer to regulation and laws in use on installation place.
• Install the unit by following local codes and regulations in force in the place of
installation, and the installation instructions of the manufacturer.
• This unit is part of a set constituting an air conditioner. The unit must not be installed
alone or be installed with device not authorized by the manufacturer.
• When installing pipes shorter than 5 m, sound of the outdoor unit will be transferred to
the indoor unit, which will cause large operating sound or some abnormal sound.
• Always use a separate power supply line protected by a circuit breaker operating on
all wires with a distance between contact of 3mm for this unit.
• To protect the persons, earth (ground) the unit correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
• The units are not explosion proof, and therefore should not be installed in explosive
atmosphere.
• This unit contains no user-serviceable parts. Always consult experienced service
technician for repairing.
• When moving or relocating the air conditioner, consult experienced service
technicians for disconnection and installation of the unit.
• Children should be monitored to ensure they do not play with the device.
• Do not touch the aluminum fins of heat exchanger built-in the indoor or outdoor unit to
avoid personal injury when you install or maintain the unit.
• Do not place any other electrical products or household belongings under indoor unit
or outdoor unit. Dripping condensation from the unit might get them wet, and may
cause damage or malfunction of your property.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
WARNING
• Do not introduce any substance other than the prescribed refrigerant into the
refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration
cycle will become abnormally high and cause the piping to rupture.
• If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
• Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
areas. Touching the refrigerant directly can cause frostbite.
• If a refrigerant leak occurs during operation, immediately vacate the premises and
thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it
produces a toxic gas.
• The basic installation work procedures are the same as conventional refrigerant
models.
However, pay careful attention to the following points:
- Since the working pressure is 1.6 times higher than that of conventional refrigerant
(R22) models, some of the piping and installation and service tools are special. (See
the table below.)
Especially, when replacing a conventional refrigerant (R22) model with a new
refrigerant R410A model, always replace the conventional piping and flare nuts with
the R410A piping and flare nuts.
- Models that use refrigerant R410A have a different charging port thread diameter
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2-20 UNF.]
- Be careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
- When charging the refrigerant, take into account the slight change in the
composition of the gas and liquid phases. And always charge from the liquid phase
where refrigerant composition is stable.
2.2. Special tools for R410A refrigerant
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifically for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than R22, failure to use dedicated
piping material or improper installation can cause rupture or injury. Furthermore, it can
cause serious accidents such as water leakage, electric shock, or fire.
Tool name Changes
Gauge manifold Pressure is high and cannot be measured with a conventional
gauge. To prevent erroneous mixing of other refrigerants, the
diameter of each port has been changed.
It is recommended the gauge with seals –0.1 to 5.3 MPa (-1 to
53 bar) for high pressure. –0.1 to 3.8 MPa (-1 to 38 bar) for low
pressure.
Charging hose To increase pressure resistance, the hose material and base
size were changed.
Vacuum pump A conventional vacuum pump can be used by installing a
vacuum pump adapter.
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
2.3. Accessories
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts. The use of non-prescribed parts can cause serious accidents such as
the unit falling, water leakage, electric shock, or fire.
Following installation parts are supplied. Use them as required.
Keep this manual in a safe place, and do not discard any other accessories until the
installation work has been completed.
Name and shape Q’ty Description
Installation
manual 1
This manual
Drain pipe
1
(Reverse cycle model only)
Drain cap
5 —
The following items are necessary to install this air conditioner. (The items are not
included with the air conditioner and must be purchased separately.)
Name
Connection pipe assembly Decorative tape Saddle Tapping screws
Connection cable Vinyl tape Drain hose Sealant
Wall pipe Wall cap M10 bold, nut
2.4. Operating range
Outdoor Cooling/Dry Mode Heating Mode
Temperature -5 to 115°F
(-20 to 46°C)
-5 to 75°F
(-20 to 24°C)
• If operated at a temperature beyond the specified operating range, a protection circuit
may be activated to stop the operation of the unit.
• To connect the indoor unit and outdoor unit, use air conditioner piping and cables
available locally as standard parts.
This manual describes proper connections using such installation set.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
• Do not use an extension cable.
• Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fire by poor connection, insufficient insulation or over current.
• Do not purge the air with refrigerants but use a vacuum pump to vacuum the
installation.
• There is no extra refrigerant in the outdoor unit for air purging.
• Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition
sources (for example: open flames, an operating gas appliance or an operating
electric heater.)
• Using the same vacuum pump for different refrigerants may damage the vacuum
pump or the unit.
• Use a clean gauge manifold, vacuum pump and charging hose for R410A exclusively.
• Do not modify this unit, such as opening a hole in the cabinet.
• During the pump-down operation, make sure that the compressor is turned off before
you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way or
3-way valves open. This may cause abnormal pressure in the refrigeration cycle that
leads to rupture and even injury.
• Dispose of the packing materials safely. Tear and dispose of the plastic packing bags
so that children cannot play with them. There is the danger of suffocation if children
play with the original plastic bags.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
• To avoid danger of suffocation, keep the plastic bag or thin film used as the packaging
material away from young children.
• Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
CAUTION
• This unit must be installed by qualified personnel with a capacity certification of
handling refrigerant fluids. Refer to regulation and laws in use on installation place.
• Install the unit by following local codes and regulations in force in the place of
installation, and the installation instructions of the manufacturer.
• This unit is part of a set constituting an air conditioner. The unit must not be installed
alone or be installed with device not authorized by the manufacturer.
• When installing pipes shorter than 5 m, sound of the outdoor unit will be transferred to
the indoor unit, which will cause large operating sound or some abnormal sound.
• Always use a separate power supply line protected by a circuit breaker operating on
all wires with a distance between contact of 3mm for this unit.
• To protect the persons, earth (ground) the unit correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
• The units are not explosion proof, and therefore should not be installed in explosive
atmosphere.
• This unit contains no user-serviceable parts. Always consult experienced service
technician for repairing.
• When moving or relocating the air conditioner, consult experienced service
technicians for disconnection and installation of the unit.
• Children should be monitored to ensure they do not play with the device.
• Do not touch the aluminum fins of heat exchanger built-in the indoor or outdoor unit to
avoid personal injury when you install or maintain the unit.
• Do not place any other electrical products or household belongings under indoor unit
or outdoor unit. Dripping condensation from the unit might get them wet, and may
cause damage or malfunction of your property.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
WARNING
• Do not introduce any substance other than the prescribed refrigerant into the
refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration
cycle will become abnormally high and cause the piping to rupture.
• If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
• Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
areas. Touching the refrigerant directly can cause frostbite.
• If a refrigerant leak occurs during operation, immediately vacate the premises and
thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it
produces a toxic gas.
• The basic installation work procedures are the same as conventional refrigerant
models.
However, pay careful attention to the following points:
- Since the working pressure is 1.6 times higher than that of conventional refrigerant
(R22) models, some of the piping and installation and service tools are special. (See
the table below.)
Especially, when replacing a conventional refrigerant (R22) model with a new
refrigerant R410A model, always replace the conventional piping and flare nuts with
the R410A piping and flare nuts.
En-4
3. GENERAL SPECIFICATION
3.1. Selecting circuit breaker and wiring
CAUTION
• Be sure to install a breaker of the specified capacity.
• Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating 1 ø 208/230 V (60 Hz)
Operating range 188-253 V
Cable Cable size (AWG) Cable type Remark
Power supply
cable AWG 16 to 14 Sheathed PVC
cable 2 wire + Earth (Ground)
Connection
cable AWG 20 to 16 Sheathed PVC
cable 3 wire + Earth (Ground)
Select the correct cable type and size according to the country or region’s regulations.
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
CAUTION
MODEL 18 24 30 36
MINIMUM CIRCUIT AMPACITY 18.3 A 20.8 A 20.8 A 24.6 A
MAX. CKT. BKR. (MAXIMUM CIRCUIT BREAKER) 20 A 30 A 30 A 30 A
• Before starting work check that power is not being supplied to all poles of the indoor
unit and outdoor unit.
• Install all electrical works in accordance to the national standard.
• Install the disconnect device with a contact gap of at least 2/16 in (3 mm) in all poles
nearby the units. (Both indoor unit and outdoor unit)
• Install the circuit breaker nearby the units.
3.2. Selecting the pipe material
CAUTION
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without any contamination
which may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or
water.
• It is necessary to use seamless copper pipes.
Material: Phosphor deoxidized seamless copper pipes.
It is desirable that the amount of residual oil is less than 40 mg/33ft (10m).
• Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially on the interior surface). Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional refrigerant, it is necessary to
choose adequate materials.
NOTES:
Thicknesses of copper pipes used with R410A are as shown in the table.
Never use copper pipes thinner than those indicated in the table even if they are available
on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [in (mm)] Thickness [in (mm)]
1/4 (6.35) 0.032 (0.80)
3/8 (9.52) 0.032 (0.80)
1/2 (12.70) 0.032 (0.80)
5/8 (15.88) 0.039 (1.00)
3/4 (19.05) 0.047 (1.20)
3.3. Connection pipe requirement
CAUTION
If the pipe lengths and height differences are not kept as shown in the table, correct
operation cannot be guaranteed.
Model Diameter Pipe length Maximum height
(between indoor
and outdoor)Liquid Gas MAX. MIN.
18 1/4 in (6.35 mm) 1/2 in (12.70 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
24 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
30 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
36 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
3.4. Additional charging
Refrigerant suitable for a piping length of 66 ft (20 m) is charged in the outdoor unit at the
factory.
When the piping is longer than 66 ft (20 m), additional charging is necessary.
For the additional amount, see the table below.
Model Piping length 66 ft
(20 m)
98 ft
(30 m)
131 ft
(40 m)
165 ft
(50 m) Rate
18
Additional charge
None 7 oz
(200 g)
14 oz
(400g)
1 lb 5 oz
(600 g)
0.22 oz/ft
(20 g)
24/30/36 None 14 oz
(400 g)
1 lb 12 oz
(800 g)
2 lb 10 oz
(1200 g)
0.43 oz/ft
(40 g)
CAUTION
When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
4. INSTALLATION WORK
Make sure to obtain the customer’s approval for selecting and installing the outdoor unit.
4.1. Selecting an installation location
WARNING
• Install at a place that can withstand the weight of the outdoor units and install
positively so that the units will not topple or fall.
• Be sure to install the outdoor unit as prescribed, so that it can withstand earthquakes
and typhoons or other strong winds. Improper installation can cause the unit to topple
or fall, or other accidents.
• Do not install the outdoor unit near the edge of a balcony. Otherwise, children may
climb onto the outdoor unit and fall off of the balcony.
CAUTION
• Do not install the outdoor unit in the following areas:
- Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
- Area filled with mineral oil or containing a large amount of splashed oil or steam,
such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit
to leak water.
- Area that generates substances that adversely affect the equipment, such as
sulfuric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed
joints to corrode, which can cause refrigerant leakage.
- Area containing equipment that generates electromagnetic interference. It will cause
the control system to malfunction, preventing the unit from operating normally.
- Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fire.
- Area where small animals may live. It may cause failure, smoke or fire if small
animals enter and touch internal electrical parts.
- Area where animals may urinate on the unit or ammonia may be generated.
• Do not tilt the outdoor unit more than 3 degrees.
• Install the outdoor unit in a well-ventilated location away from rain or direct sunlight.
• If the outdoor unit must be installed in an area within easy reach of the general public,
install as necessary a protective fence or the like to prevent their access.
• Install the outdoor unit in a location that would not inconvenience your neighbors, as
they could be affected by the airflow coming out from the outlet, noise, or vibration. If
it must be installed in proximity to your neighbors, be sure to obtain their approval.
• Do not install in an area that has heat sources, vapors, or the risk of leakage or
accumulation of flammable gas.
• If the outdoor unit is installed in a cold region that is affected by snow accumulation,
snow fall, or freezing, take appropriate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
• Do not install the unit where a strong wind blows or where it is very dusty.
• Install the unit where keep away more than 3 m from the antenna of TV set and
Radio.
• If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
• Keep the length of the piping of the indoor and outdoor units within the allowable
range.
• Outdoor unit should be set to a place where both drainage and itself will not be
affected when heating.
• For maintenance purposes, do not bury the piping.
4.2. Installation dimensions
CAUTION
• The installation space shown in the following examples is based on an ambient
temperature under cooling operation of 95°F (35°C) (DB) at the air intake of the
outdoor unit. Provide more space around the air intake than shown in the examples if
the ambient temperature exceeds 95°F (35°C) (DB) or if the thermal load of all of the
outdoor units exceeds the capacity.
• Consider the transportation route, installation space, maintenance space, and access,
and install the unit in a location with sufficient space for the refrigerant piping.
• Installation methods not shown in the following examples are not recommended.
Performance may drop significantly.
3. GENERAL SPECIFICATION
3.1. Selecting circuit breaker and wiring
CAUTION
• Be sure to install a breaker of the specified capacity.
• Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating 1 ø 208/230 V (60 Hz)
Operating range 188-253 V
Cable Cable size (AWG) Cable type Remark
Power supply
cable AWG 16 to 14 Sheathed PVC
cable 2 wire + Earth (Ground)
Connection
cable AWG 20 to 16 Sheathed PVC
cable 3 wire + Earth (Ground)
Select the correct cable type and size according to the country or region’s regulations.
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
CAUTION
MODEL 18 24 30 36
MINIMUM CIRCUIT AMPACITY 18.3 A 20.8 A 20.8 A 24.6 A
MAX. CKT. BKR. (MAXIMUM CIRCUIT BREAKER) 20 A 30 A 30 A 30 A
• Before starting work check that power is not being supplied to all poles of the indoor
unit and outdoor unit.
• Install all electrical works in accordance to the national standard.
• Install the disconnect device with a contact gap of at least 2/16 in (3 mm) in all poles
nearby the units. (Both indoor unit and outdoor unit)
• Install the circuit breaker nearby the units.
3.2. Selecting the pipe material
CAUTION
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without any contamination
which may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or
water.
• It is necessary to use seamless copper pipes.
Material: Phosphor deoxidized seamless copper pipes.
It is desirable that the amount of residual oil is less than 40 mg/33ft (10m).
• Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially on the interior surface). Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional refrigerant, it is necessary to
choose adequate materials.
NOTES:
Thicknesses of copper pipes used with R410A are as shown in the table.
Never use copper pipes thinner than those indicated in the table even if they are available
on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [in (mm)] Thickness [in (mm)]
1/4 (6.35) 0.032 (0.80)
3/8 (9.52) 0.032 (0.80)
1/2 (12.70) 0.032 (0.80)
5/8 (15.88) 0.039 (1.00)
3/4 (19.05) 0.047 (1.20)
3.3. Connection pipe requirement
CAUTION
If the pipe lengths and height differences are not kept as shown in the table, correct
operation cannot be guaranteed.
Model Diameter Pipe length Maximum height
(between indoor
and outdoor)Liquid Gas MAX. MIN.
18 1/4 in (6.35 mm) 1/2 in (12.70 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
24 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
30 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
36 3/8 in (9.52 mm) 5/8 in (15.88 mm) 165 ft (50 m) 17 ft (5 m) 98 ft (30 m)
3.4. Additional charging
Refrigerant suitable for a piping length of 66 ft (20 m) is charged in the outdoor unit at the
factory.
When the piping is longer than 66 ft (20 m), additional charging is necessary.
For the additional amount, see the table below.
Model Piping length 66 ft
(20 m)
98 ft
(30 m)
131 ft
(40 m)
165 ft
(50 m) Rate
18
Additional charge
None 7 oz
(200 g)
14 oz
(400g)
1 lb 5 oz
(600 g)
0.22 oz/ft
(20 g)
24/30/36 None 14 oz
(400 g)
1 lb 12 oz
(800 g)
2 lb 10 oz
(1200 g)
0.43 oz/ft
(40 g)
CAUTION
When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
4. INSTALLATION WORK
Make sure to obtain the customer’s approval for selecting and installing the outdoor unit.
4.1. Selecting an installation location
WARNING
• Install at a place that can withstand the weight of the outdoor units and install
positively so that the units will not topple or fall.
• Be sure to install the outdoor unit as prescribed, so that it can withstand earthquakes
and typhoons or other strong winds. Improper installation can cause the unit to topple
or fall, or other accidents.
• Do not install the outdoor unit near the edge of a balcony. Otherwise, children may
climb onto the outdoor unit and fall off of the balcony.
CAUTION
• Do not install the outdoor unit in the following areas:
- Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
- Area filled with mineral oil or containing a large amount of splashed oil or steam,
such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit
to leak water.
- Area that generates substances that adversely affect the equipment, such as
sulfuric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed
joints to corrode, which can cause refrigerant leakage.
- Area containing equipment that generates electromagnetic interference. It will cause
the control system to malfunction, preventing the unit from operating normally.
- Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fire.
- Area where small animals may live. It may cause failure, smoke or fire if small
animals enter and touch internal electrical parts.
- Area where animals may urinate on the unit or ammonia may be generated.
• Do not tilt the outdoor unit more than 3 degrees.
• Install the outdoor unit in a well-ventilated location away from rain or direct sunlight.
• If the outdoor unit must be installed in an area within easy reach of the general public,
install as necessary a protective fence or the like to prevent their access.
• Install the outdoor unit in a location that would not inconvenience your neighbors, as
they could be affected by the airflow coming out from the outlet, noise, or vibration. If
it must be installed in proximity to your neighbors, be sure to obtain their approval.
• Do not install in an area that has heat sources, vapors, or the risk of leakage or
accumulation of flammable gas.
• If the outdoor unit is installed in a cold region that is affected by snow accumulation,
snow fall, or freezing, take appropriate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
• Do not install the unit where a strong wind blows or where it is very dusty.
• Install the unit where keep away more than 3 m from the antenna of TV set and
Radio.
• If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
• Keep the length of the piping of the indoor and outdoor units within the allowable
range.
• Outdoor unit should be set to a place where both drainage and itself will not be
affected when heating.
• For maintenance purposes, do not bury the piping.
4.2. Installation dimensions
CAUTION
• The installation space shown in the following examples is based on an ambient
temperature under cooling operation of 95°F (35°C) (DB) at the air intake of the
outdoor unit. Provide more space around the air intake than shown in the examples if
the ambient temperature exceeds 95°F (35°C) (DB) or if the thermal load of all of the
outdoor units exceeds the capacity.
• Consider the transportation route, installation space, maintenance space, and access,
and install the unit in a location with sufficient space for the refrigerant piping.
• Installation methods not shown in the following examples are not recommended.
Performance may drop significantly.
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