Toshiba RAV-SP122AT2P-UL User manual

AIR CONDITIONER (SPLIT TYPE)
Installation Manual
Outdoor Unit
Model name:
<Heat Pump Model>
RAV-SP122AT2P-UL
RAV-SP182AT2P-UL
1131701101
For commercial use
Pour usage commercial
Para uso comercial
English
Installation Manual 1
1131701101-00_S01_297x210_60p_S_p70_220426.indd 1 26/4/2565 11:41:08

� 1 �
Contents
1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Installation of new refrigerant air conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Installation conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Refrigerant piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9 Finishing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10 Test run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11 Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
12 Functions to be implemented locally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
13 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
14 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
 15Specications........................................................18
1-EN 2-EN
Original instruction
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the outdoor unit.
• For installation of the indoor unit, refer the Installation Manual attached to the indoor unit.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 1 26/4/2565 11:41:08

� 2 �
3-EN 4-EN
Thank you for purchasing this Toshiba Carrier air conditioner.
Please read carefully through these instructions that contain important information and ensure that you
understand them.
After reading these instructions, be sure to keep them in a safe place together with the Owner’s Manual and
Installation Manual supplied with your product.
Generic Denomination: Air Conditioner
DenitionofQualiedInstallerorQualiedServicePerson
The air conditioner must be installed, maintained, repaired and removed by a qualied installer or qualied service
person. When any of these jobs is to be done, ask a qualied installer or qualied service person to do them for you.
A qualied installer or qualied service person is an agent who has the qualications and knowledge described in
the table below.
Agent Qualicationsandknowledgewhichtheagentmusthave
Qualied
installer
• The qualied installer is a person who installs, maintains, relocates and removes the air conditioners
made by Manufacturer. He or she has been trained to install, maintain, relocate and remove the
air conditioners made by Manufacturer or, alternatively, he or she has been instructed in such
operations by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to these operations.
• The qualied installer who is allowed to do the electrical work involved in installation, relocation
and removal has the qualications pertaining to this electrical work as stipulated by the local laws
and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Manufacturer or, alternatively, he or she has been instructed
in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
• The qualied installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who
has been trained in matters relating to refrigerant handling and piping work on the air conditioners
made by Manufacturer or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the
knowledge related to this work.
• The qualied installer who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Manufacturer or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
Qualied service
person
• The qualied service person is a person who installs, repairs, maintains, relocates and removes
the air conditioners made by Manufacturer. He or she has been trained to install, repair, maintain,
relocate and remove the air conditioners made by Manufacturer or, alternatively, he or she has
been instructed in such operations by an individual or individuals who have been trained and is
thus thoroughly acquainted with the knowledge related to these operations.
• The qualied service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualications pertaining to this electrical work as stipulated by the
local laws and regulations, and he or she is a person who has been trained in matters relating to
electrical work on the air conditioners made by Manufacturer or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualied service person who is allowed to do the refrigerant handling and piping work involved
in installation, repair, relocation and removal has the qualications pertaining to this refrigerant
handling and piping work as stipulated by the local laws and regulations, and he or she is a
person who has been trained in matters relating to refrigerant handling and piping work on the
air conditioners made by Manufacturer or, alternatively, he or she has been instructed in such
matters by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to this work.
• The qualied service person who is allowed to work at heights has been trained in matters relating
to working at heights with the air conditioners made by Manufacturer or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained and is
thus thoroughly acquainted with the knowledge related to this work.
DenitionofProtectiveGear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves
and “Safety” work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the special
work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
Work undertaken Protectivegearwear
All types of work Protective gloves
“Safety” working clothing
Electrical-related work
Gloves to provide protection for electricians
Insulating shoes
Clothing to provide protection from electric shock
Work done at heights
(50 cm or more) Helmets for use in industry
Transportation of heavy
objects Shoes with additional protective toe cap
Repair of outdoor unit Gloves to provide protection for electricians
Centerofgravity
Unit : in (mm)
5.5” (140)
8.9” (225)
EN
11.2” (285)
1131701101-00_S01_297x210_60p_S_p70_220426.indd 2 26/4/2565 11:41:09

� 3 �
5-EN 6-EN
Warning indications on the air conditioner unit
Warning indication Description
CAUTION
BURST HAZARD
Open the service valves before
the operation, otherwise there
might be the burst.
CAUTION
BURST HAZARD
Open the service valves before the operation, otherwise
there might be the burst.
WARNING
Capacitor connected within
this disconnect or
downstream upon shutdown
wait 5 minutes to allow
capacitors to discharge
WARNING
Capacitor connected within this disconnect or downstream
upon shutdown wait 5 minutes to allow capacitors to
discharge.
1Precautions for safety
Installing, starting up, and servicing air-conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualied installers and service mechanics should
install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning coils. All other operations should be performed
by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves.
Keep quenching cloth and re extinguisher nearby when brazing.
Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in literature and attached to the unit. Consult
local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information. This is the
safety-alert symbol . When you see this symbol on the unit
and in instructions or manuals, be alert to the potential for personal
injury. Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identies the most serious hazards which will result in
severe personal injury or death. WARNING signies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 3 26/4/2565 11:41:09

� 4 �
7-EN 8-EN
WARNING
• Askanauthorizeddealerorqualiedinstallation
professional to install/maintain the air conditioner.
Perform installation work properly according to the
Installation Manual.
Inappropriate installation may result in water leakage, electric
shock or re.
• Be sure to ground the equipment
Improper grounding may cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning
rods or ground wires for telephone wires.
• Turno󰀨thecircuitbreakerbeforeattemptinganyelectrical
work and maintenance.
Make sure the circuit breaker is o󰀨. Failure to do so may cause
electric shock.
Use an exclusive power circuit for the air conditioner. Use the
rated voltage.
• Whenmovingtheairconditionerforinstallationtoanother
  place,beverycarefulnottoallowthespeciedrefrigerant
(R410A) to become mixed with any other gaseous body
into the refrigeration cycle.
If air or any other gas mixes with the refrigerant, the gas
pressure in the refrigeration cycle will become abnormally high
and it may result in the pipe bursting or personal injuries.
• Donotmodifythisunitbyremovinganyofthesafetyguards
or by by-passing any of the safety interlock switches.
• Donottouchtheintakeoraluminiumnsofthe
outdoor unit.
Doing so may result in injury.
• Tightenthearenutwithatorquewrenchinthespecied
manner.
Excessive tightening of the are nut may cause a crack in the
are nut after a long period, which may result in refrigerant
leakage.
• Install the air conditioner securely in a location where the
base can sustain the weight of the unit adequately.
• If refrigerant gas has leaked during the installation work,
  ventilatetheroomimmediately.
If the leaked refrigerant gas comes in contact with re, noxious
gas may be generated.
• Aftertheinstallationwork,conrmthatrefrigerantgasdoes
not leak.
If refrigerant gas leaks into the room and ows near a re source,
such as a cooking range, noxious gas may be generated.
• Electricalworkmustbeperformedbyaqualiedelectrician
in accordance with the NEC or local code. Make sure the air
  conditionerusesanexclusivepowersupply.
An insu󰀩cient power supply capacity or inappropriate installation
may cause re.
• Useonlythespeciedwiringduringtheunitinstallation.
  Ensurethatallterminalsaresecurelyxed,sopreventing
  anyexternalforceshavinganegativee󰀨ectonthe
terminals.
EN
1131701101-00_S01_297x210_60p_S_p70_220426.indd 4 26/4/2565 11:41:09

� 5 �
9-EN 10-EN
WARNING
• When the air conditioner cannot cool or heat a room well,
contact the dealer from whom you purchased the air
conditioner as refrigerant leakage is considered as the
cause.
  Inthecaseofrepairthatrequiresrellofrefrigerant,ask
  servicepersonnelaboutdetailsoftherepair.
The refrigerant used in the air conditioner is harmless.
Generally, the refrigerant does not leak. However, if the
refrigerant leaks in a room and a heater or stove burner in the
room catches re, it may generate toxic gas.
When you ask service personnel for repairing refrigerant
leakage, conrm that the leakage portion has been completely
repaired.
• Do not install the air conditioner in a location that may be
subjected to a risk of exposure to a combustible gas.
If a combustible gas leaks and becomes concentrated around
the unit, a re may occur.
• Install the refrigerant pipe securely during the installation
work before operating the air conditioner.
If the compressor is operated with the valve open and without
the refrigerant pipe, the compressor sucks air and the
refrigeration cycle is over pressurized, which may cause a burst
or injury.
• When carrying out the pump-down work, shut down the
compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left
open and with the compressor still operating will cause air, etc.
to be sucked in, raising the pressure inside the refrigeration
cycle to an abnormally high level, and possibly resulting in
rupturing, injury, etc.
WARNING
• After installation work, make sure below before operation.
- Connection pipes are connected properly and no leakage.
 -Packedvalvesarefullyopen.
Running compressor without open packed valves may cause
abnormal high pressure and parts failure.
Leakage at connection piping may suck air and make further high
pressure cause burst and injure.
CAUTION
• Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall o󰀨 of the outdoor unit and
result in injury.
• Wearheavyglovesduringtheinstallationworktoavoid
injury.
 EQUIPMENTDAMAGEHAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the
ground. If any section of pipe is buried, there must be a 6 in.
(152 mm) vertical rise to the valve connections on the outdoor units.
If more than the recommended length is buried, refrigerant may
migrate to the cooler buried section during extended periods of
system shutdown. This causes refrigerant slugging and could
possibly damage the compressor at start-up.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 5 26/4/2565 11:41:09

� 6 � 12-EN
11-EN
2Accessory parts
Part name Q’ty Shape Usage
Installation Manual 1 Booklet Hand this directly to the customer.
Drain connector 1
Waterproof rubber cap 2
3Installation of new refrigerant air
conditioner
CAUTION
New refrigerant air conditioner installation
• This air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.
R410A refrigerant is apt to be a󰀨ected by impurities such as water, oxidizing membrane, and oils because the
working pressure of R410A refrigerant is approx. 1.6 times as that of refrigerant R22. Accompanied with the
adoption of the new refrigerant, the refrigerant oil has also been changed. Therefore, during installation work,
be sure that water, dust, former refrigerant, or refrigerant oil does not enter the new type refrigerant R410A air
conditioner cycle.
To prevent mixing of refrigerant or refrigerant oil, the sizes of connecting sections of charging port on main unit
and installation tools are di󰀨erent from those of the conventional refrigerant units. Accordingly, special tools are
required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping materials with high
pressure ttings made for R410A only, so that water and/or dust does not enter.
Required Tools / Equipment and precautions for use
Prepare the tools and equipment listed in the following table before starting the installation work.
Legend
: R410A exclusive
: Generic
Tools / equipment Use
Manifold gauge Vacuuming/charging
refrigerant and operation check
Charging hose
Gas leak detector Gas leak check
Vacuum pump with backow
prevention function Vacuum drying
Flare tool Flare machining of pipes Usable if dimensions are adjusted.
Bender Bending pipes
Refrigerant recovery equipment Refrigerant recovery
Torque wrench Tightening are nuts Ø1/4” (6.4 mm) and Ø1/2” (12.7 mm)
Pipe cutter Cutting pipes
Brazing torch and nitrogen
cylinder Braze pipes
Refrigerant charging scales Charging refrigerant
4 mm hexagon wrench Opening liquid valve
EN
1131701101-00_S01_297x210_60p_S_p70_220426.indd 6 26/4/2565 11:41:09

� 7 �
13-EN 14-EN
■Refrigerant piping
R410A refrigerant
CAUTION
•Incomplete aring may cause refrigerant gas leakage.
•Do not re-use ares. Use new ares to prevent refrigerant gas leakage.
•Use are nuts that are included with the unit. Using di󰀨erent are nuts may cause refrigerant gas leakage.
Use the following item for the refrigerant piping.
Material : Seamless phosphorous deoxidized copper pipe.
Ø6.4, Ø9.52, Ø12.7 Wall thickness 0.8 mm or more Ø15.9
Wall thickness 1.0 mm or more
REQUIREMENT
When the refrigerant pipe is long, provide support brackets at intervals of 2.5 to 3 m to clamp the refrigerant pipe.
Otherwise, abnormal sound may be generated.
4Installation conditions
■Before installation
Be sure to prepare to the following items before
installation.
Length of refrigerant pipe
Model
Length of refrigerant
pipe connected to
indoor / outdoor unit
Additional refrigerant
SP122
SP182
16’5” - 65’7”
(5 - 20 m) None
*65’7” - 164’1”
(20 - 50 m)
Add 0.22 oz/ft (20 g/m)
of refrigerant for piping
that exceeds 65’7”
(20 m) up to 164’1”
(50 m).
* Caution during addition of refrigerant
Max. amount of additional refrigerant is 1.8 lbs
(800 g).
Charge the refrigerant accurately. Overcharging
may cause serious trouble with the compressor.
* Minimum refrigerant pipe is 16’5”(5 m).
This may cause a malfunction of the compressor or
other devices.
Leakage test
1. Before starting an leakage test, further tighten the
spindle valves on the gas and liquid sides.
2. Pressurize the pipe with nitrogen gas charged from
the service port to the design pressure (4.15 MPa)
to conduct an leakage test.
3. Check for gas leaks using a leak tester for the HFC
refrigerant.
4. After the leakage test is completed, evacuate the
nitrogen gas.
Evacuation
•To evacuate system, use a vacuum pump.
•Do not use refrigerant charged in the outdoor unit
for evacuation.
Electrical wiring
•Be sure to x the power wires and system
interconnection wires with clamps so that they do not
come into contact with the cabinet, etc.
Grounding
WARNING
Makesurethatpropergroundingisprovided.
Improper grounding may cause an electric shock.
For details on how to check grounding, contact the
dealer who installed the air conditioner or a profes
sional installation company.
•Proper grounding can prevent charging of electricity
on the outdoor unit surface due to the presence of a
high frequency in the frequency converter (inverter)
of the outdoor unit, as well as prevent electric shock.
If the outdoor unit is not properly earthed, you may
be exposed to an electric shock.
•Be sure to connect the earth wire. (grounding
work)
Incomplete grounding can cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
Test run
Turn on the leakage breaker at least 12 hours before
starting a test run to protect the compressor during
startup.
CAUTION
Incorrect installation work may result in a malfunction
or complaints from customers.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 7 26/4/2565 11:41:09

� 8 �
15-EN 16-EN
Installation Location
WARNING
Install the outdoor unit in a location that can
support the weight of the outdoor unit.
Insu󰀩cient durability may cause the outdoor unit to
fall, which may result in injury.
CAUTION
Do not install the outdoor unit in a location that
is subject to combustible gas leaks.
Accumulation of combustible gas around the outdoor
unit may cause a re.
Install the outdoor unit in a location that meets
the following conditions.
• A well-ventilated location free from obstacles near
the air inlets and air outlet
• A location that does not increase the operating
noise or vibration of the outdoor unit
• A location that does not produce any drainage
problems from discharged water
• Location with easy access to power.
Do not install the outdoor unit in the following
location.
• A location with a saline atmosphere (coastal area)
or one that is full of sulde gas (hot-spring area)
(Special maintenance is required.)
• A location subject to oil, vapor, oily smoke, or
corrosive gases
• A location in which organic solvent is used
• A location where high-frequency equipment
(including inverter equipment, private power
generator, medical equipment, and communication
equipment) is used (Installation in such a location
may cause malfunction of the air conditioner,
abnormal control or problems due to noise from
such equipment.)
• A location in which the discharged air of the
outdoor unit blows against the window of a
neighboring house
• A location where the operating noise of the
outdoor unit is transmitted
• When the outdoor unit is installed in an elevated
position, be sure to secure its feet.
• A location in which drain water poses any problems.
When an outdoor unit is installed in a location that
is always exposed to strong winds like a coast or
on the high stories of a building, one of the following
is recommended.
• Install the unit so that its discharge faces the wall of
the structure.
Keep a distance 19.7” (500 mm) or more between
the unit and wall.
19.7” (500 mm)
• Install the unit so that the discharge is at a right
angle relative to the wind direction.
Strong wind
Strong wind
• Use wind ba󰀪e. Produce those parts in the eld.
• When outside temperature conditions are 23 °F
(-5°C) or lower and unit is running in cooling mode.
<Example>
Wind ba󰀪e
Wind ba󰀪e
■Necessary space for
installation Unit : in (mm)
Obstacle at rear side
Upper side is free
1. Single unit installation
5.9” (150)
or more
2. Obstacles on both right and left sides
5.9” (150)
or more 11.8” (300) or more
7.9” (200)
or more
The height of the
obstacle should be
lower than the height
of the outdoor unit.
3. Serial installation of two or more units
5.9” (150)
or more 11.8” (300) or more 11.8” (300) or more 11.8” 300 or more
7.9” (200) or more
The height of the obstacle should be lower than the
height of the outdoor unit.
Obstaclealsoaboveunit
5.9” (150)
or more
19.7” (500) or more
Obstacle in front
Aboveunitisfree
1. Single unit installation
19.7 ” (500) or more
2. Serial installation of two or more units
39.4” (1,000) or more
Obstaclealsoattheaboveunit
39.4” (1,000) or more
39.4” (1,000)
or more
EN
1131701101-00_S01_297x210_60p_S_p70_220426.indd 8 26/4/2565 11:41:09

� 9 �
17-EN 18-EN
Obstacles in both front and rear of unit
Open above and to the right and left of the unit.
The height of an obstacle in both the front and rear of
the unit, should be lower than the height of the outdoor
unit.
Standard installation
1. Single unit installation
39.4” (1,000) or more 5.9” (150)
or more
2. Serial installation of two or more units
39.4” (1,000) or more 7.9” (200)
or more
11.8” (300) or more
11.8” (300)
or more
Serial installation in front and rear
Open above and to the right and left of the unit.
The height of an obstacle in both the front and rear
of the unit, should be lower than the height of the
outdoor unit.
Standard installation
39.4”
(1,000)
or more
78.7”
(2,000)
or more
59.1”
(1,500)
or more
11.8”
(300)
or more
7.9”
(200)
or more
■Installation of outdoor unit
•Before installation, check the strength and
horizontalness of the base so that abnormal sounds
do not emanate.
• According to the following base diagram, x the base
rmly with the anchor bolts.
(Anchor bolt, nut: 3/8” (M10) × 4 pairs)
Ø1.0” (25)
Drain hole
13.0” (330)
2.4”
(60)
3.5” (90) 3.5” (90)
23.6” (600)
4.3” (108)
12.1” (306)
• As shown in the gure below, install the foundation
and vibration-proof rubber pads to directly support
the bottom surface of the xing leg that is in contact
with and underneath the bottom plate of the outdoor
unit.
* When installing the foundation for an outdoor unit
with downward piping, consider the piping work.
Absorb vibration
with vibration proof
rubber pads
Fixing leg
Correct
Correct
Foundation
Foundation
Foundation
Bottom plate of
outdoor unit
Support the bottom surface of the xing
leg that is in contact with and underneath
the bottom plate of the outdoor unit.
Incorrect
Do not support the
outdoor unit only
with the xing leg.
If only the end of
the xing leg is
supported, it may
deform.
Set the out margin of the anchor bolt to 0.6” (15 mm)
or less.
0.6” (15 mm) or less
• When water is to be drained through the drain hose,
attach the following drain connector and waterproof
rubber cap, and use the drain hose (Inner dia.:
16 mm) eld supplied drain hose. Also seal the
screws securely with silicone material, etc., to
prevent water from leaking. Some conditions may
cause dewing or dripping of water.
• When collectively draining discharged water
completely, use a drain pan.
Drain connector
Base plate
Waterproof
rubber cap
Waterproof rubber cap
(2 pcs.)
■For reference
If a heating operation is to be continuously performed
for a long time under the condition that the outdoor
temperature is 0°C or lower, draining defrosted water
may be di󰀩cult due to the bottom plate freezing,
resulting in trouble with the cabinet or fan.
It is recommended to procure an anti-freeze heater
locally in order to safely install the air conditioner.
For details, contact the dealer.
Drain connector
1131701101-00_S01_297x210_60p_S_p70_220426.indd 9 26/4/2565 11:41:09

� 10 �
19-EN 20-EN
5 Refrigerant piping
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2. Insert the supplied are nut into the pipe, and then
are the pipe. The are tools newly manufactured
for R410A are recommended.
However, the conventional tools
can be used by adjusting the
projection margin of the copper
pipe.
▼Projectionmargininaring:B(Unit:in(mm))
Rigid (Clutch type)
Outer diameter of
copper pipe R410A tool used Conventional tool used
1/4” (6.4) 0 - 0.02” (0 - 0.5) 0.04” - 0.06”
(1.0 - 1.5)
1/2” (12.7)
▼Flaringdiametersize:A(Unit:in(mm))
Outer diameter of copper pipe A+0
-0.02”(–0.4)
1/4” (6.4) 0.39” (9.9)
1/2” (12.7) 0.65” (16.6)
* In case of aring for R410A with the
conventional are tool, pull the tool out
approx. 0.02” (0.5 mm) to adjust it to the
specied are size.
The copper pipe gauge is useful for
adjusting the projection margin size.
CAUTION
TAKE NOTE OF THESE 4 IMPORTANT
POINTS BELOW FOR PIPING WORK
1. Keep dust and moisture away from inside the
connecting pipes.
2. Tightly connect the connection between pipes
and the unit.
3. Evacuate the air in the connecting pipes using
a VACUUM PUMP.
4. Check for gas leaks at connected points.
Tighteningofareconnections
1. Align the centers of the are connections and fully
tighten the are nuts with your ngers.
Valveatliquidside
2. Use two wrenches to loosen or tighten the are nut
on the gas service valve as shown in the gure.
Use only one wrench to loosen or tighten the are
not on the liquid service valve.
The nal tightening with a torque wrench should be
to the specications shown in table below.
Unit : ft•Ibs (N•m)
Outer diameter of copper pipe Tightening torque
1/4” (6.4 mm) 10 - 13 (14 - 18)
1/2” (12.7 mm) 37 - 46 (50 - 62)
Valveatgasside
• After the installation work, be sure to check for gas
leaks of the pipe connections with nitrogen.
NO GOOD
CAUTION
1. Do not put the crescent wrench on the charge
orice or cover.
The valve may be broken.
2. If applying excessive torque, the nut may break
according to some installation conditions.
• Pressure of R410A is higher than that of R22
(Approx. 1.6 times).
Therefore, using a torque wrench, tighten the are
pipe connecting sections that connect the indoor/
outdoor units at the specied tightening torque.
Incomplete connections may cause not only a gas
leak, but also trouble with the refrigeration cycle.
Donotapplyrefrigerantoiltotheared
surface.
EN
1131701101-00_S01_297x210_60p_S_p70_220426.indd 10 26/4/2565 11:41:09

� 11 �
21-EN 22-EN
■Refrigerant pipe length
Single
Model Allowable pipe length (ft (m)) Heightdi󰀨erence(Indoor-outdoorH)(ft(m))
Total length L Indoor unit: Upper Outdoor unit: Lower
SP122, SP182 164’1” (50) 98’5” (30) 98’5” (30)
Model Pipe diameter Number of bent portions
Liquid side Gas side
SP122, SP182 Ø1/4” (6.4 mm) Ø1/2” (12.7 mm) 10 or less
Figure of Single
Indoor unit
Outdoor unit
6Vacuum
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor heat exchanger should
be evacuated using the recommended deep vacuum
method of 500 microns. The alternate triple evacuation
method may be used if the procedure outlined below is
followed. Always break a vacuum with dry nitrogen.
Systemvacuumandcharge
Using Vacuum Pump
1. Completely tighten are nuts A, B, C, D, connect
manifold gage charge hose to a charge port of the
low side service valve.
2. Connect charge hose to vacuum pump.
3. Fully open the low side of manifold gage.
4. Start vacuum pump.
5. Evacuate using either deep vacuum or triple
evacuation method.
6. After evacuation is complete, fully close the low side
of manifold gage and stop operation of vacuum
pump.
ServiceValve
Manifold Manifold Gage
Outdoor Unit
500 microns
Low side valve
High side valve
Vacuum pump
Packed valve at gas side
Charge port
(Valve core (Setting pin))
Indoor Unit
Service Valve
High Side
Refrigerant
Low Side
Charge hose
Charge hose
Deep Vacuum Method
The deep vacuum method requires a vacuum pump
capable of pulling a vacuum of 500 microns and a
vacuum gage capable of accurately measuring this
vacuum depth. The deep vacuum method is the most
positive way of assuring a system is free of air and
liquid water.
TripleEvacuationMethod
The triple evacuation method should only be used
when vacuum pump is only capable of pumping down
to 28 in. of mercury vacuum and system does not
contain any liquid water.
Refer to “Triple Evacuation Method chart” and proceed
as follows:
1. Pump system down to 28 in. of mercury and allow
pump to continue operating for an additional 15
minutes.
2. Close service valves and shut o󰀨 vacuum pump.
3. Connect a nitrogen cylinder and regulator to system
and open until system pressure is 2 psig.
4. Close service valve and allow system to stand for
1 hr. During this time, dry nitrogen will be able to
di󰀨use throughout the system absorbing moisture.
5. Repeat this procedure as indicated in the chart.
System will then be free of any cotaminants and
water vapor.
Deep Vacuum Graph
MICRONS
MINUTES
LEAK IN
SYSTEM
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0 1 2 3 4 5 6 7
VACUUM TIGHT
TOO WET
TIGHT DRY
SYSTEM
1131701101-00_S01_297x210_60p_S_p70_220426.indd 11 26/4/2565 11:41:10

� 12 �
23-EN 24-EN
Final Tubing Check
IMPORTANT:
Check to be certain factory tubing on both indoor and
outdoor unit has not shifted during shipment. Ensure
tubes are not rubbing against each other or any sheet
metal. Pay close attention to feeder rubes, making sure
wire ties on feeder tubes are secure and tight.
TripleEvacuationMethodchart
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
RELEASE CHARGE INTO SYSTEM
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACCUM)
Openservicevalves
Open or close the valve.
▼Liquid side
Open the valve with a 0.16” (4 mm) hexagon wrench.
[Hexagonal wrench is required.]
0.16” (4 mm)
• While the valve is fully opened, after the screwdriver
has reached the stopper, do not apply torque
exceeding 4 ft•lbs (5 N•m). Applying excessive
torque may damage the valve.
Valvehandlingprecautions
• Open the valve stem until it reaches the stop.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Valvesize Ø1/4” (6.4 mm) 10 - 13 ft•lbs (14 - 18 N•m)
Ø1/2” (12.7 mm) 24 - 31 ft•lbs (33 - 42 N•m)
Charge port 10 - 13 ft•lbs (14 - 18 N•m)
EN
Pump down process
1. Turn o󰀨 the Air Conditioner system.
2. Connect the charge hose from the manifold valve to
the service port of the packed valve at gas side.
3. Turn on the Air Conditioner system in cooling
operation more than 10 minutes.
4. Check the operating pressure of the system should
be normal value.
(Ref. with product specication)
5. Release the valve rod cap of both service valves.
6. Use the Hexagon wrench to turning the valve rod of
Liquid side fully close.
(*Make sure no entering air into the system)
7. Continue operate Air Conditioner system until and
the gauge of manifold dropped into the range of
0.5 - 0 kgf/cm2
8. Use the Hexagon wrench to turning the valve rod of
Gas side fully close.
And turn o󰀨 the Air Conditioner system immediately
thereafter.
9. Remove the gauge manifold from the service port of
the packed valve.
10. Securely tighten the valve rod cap to the both
service valves.
CAUTION
Should be check the compressor operating condition
while pumping down process. It must not any
abnormal sound, more vibration. It is abnormal
condition appears and must turn o󰀨 the Air Conditioner
immediately.
Valve cover
System
interconnection wires
Field power
supply wires
Conduit
7Electrical work
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
• The unit cabinet must have an uninterrupted or
unbroken ground to minimize personal injury if an
electrical fault should occur. The ground may consist
of electrical wire or metal conduit when installed in
accordance with existing electrical codes.
• The appliance sahll be installed in accordance with
national wiring regulations.
• Before performing service or maintenance, be sure
main power switch is turned OFF.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage
or improper operation.
• Unit failure as a result of operation on improper line
voltage or excessive phase imbalance constitutes
abuse and may cause damage to electrical
components.
• Wrong wiring may cause a burn-out of some
electrical parts.
• Do not damage or scratch the conductive core or
inner insulator of the power and inter-connecting
wires when peeling them.
Field wiring
The dashed lines show eld wiring.
(Field power
supply)
(System
interconnection wires)
Remote
controller
Input
power
208/230V~,
60 Hz
circuit breaker Outdoor unit Indoor unit
ground
L1L1L1
L2L2L2
S S
1131701101-00_S01_297x210_60p_S_p70_220426.indd 12 26/4/2565 11:41:10

� 13 �
25-EN 26-EN
Connecting power and control
cables (Field supplied)
• The main power is supplied to the outdoor unit.
The eld supplied connecting cables from the
outdoor unit to the indoor unit consist for 4 wires and
provides the power for the indoor unit as well as the
communication signal between the outdoor and
indoor unit.
• Consult local building codes, NEC (National
Electrical Code) or CEC (Canadian Electrical Code)
for special requirements.
• The following are the electrical requirements.
Model RAV- SP122, 182
Power supply 208/230V, 60Hz
MCA 14A
MOCP (MAX Fuse/CB) 20A
Breaker 15A
Field power supply wires AWG14
System interconnection wires AWG16
MCA = Minimum Circuit Amps
MOCP = Maximum Over Protection Device Amps.
Wiring
All wiring and connections must comply with NEC,
CEC, local codes.
1. Connect all wires to the correct terminal on the
wiring terminal blocks.
2. Make sure that all connectors are secure.
3. Size connectors per the ratings listed in the system
requirement section.
4. System interconnections should be minimum,
16 AWG.
Stripping length power cord and connecting wire
Ground wire (in (mm)) Ground wire
System interconnection wire Power supply wire
How to wire
1. Remove the terminal cover by taking o󰀨 the mounting screw (1 piece).
2. Connect the power supply wires and system interconnection wires to the terminal block of the electrical control
box.
3. Tighten the screws of the terminal block, connect the wires matching the terminal numbers (Do not apply
tension to the connecting section of the terminal block.)
4. Attach the terminal cover.
• When connecting the system interconnection wire to the outdoor unit terminal, prevent water from coming into
the outdoor unit.
• Insulate the unsheathed cords (conductors) with electrical insulation tape. Process them so that they do not
touch any electrical or metal parts.
• For system interconnection wires, do not use a wire joined to another on the way.
Use wires long enough to cover the entire length.
Screw
Terminal cover
Earth screw
System interconnection wire Power supply wire
0.39” (10) L1 L1
L2 L2 S
0.39” (10) 0.39” (10)
0.39” (10)
1.57”
(40)
1.57”
(40)
1.18”
(30) 1.18”
(30)
L1 L1L2 L2S
1131701101-00_S01_297x210_60p_S_p70_220426.indd 13 26/4/2565 11:41:10

� 14 �
27-EN 28-EN
EN
12 Functions to be implemented locally
Handling existing pipe
When using the existing pipe, carefully check for the following:
• Wall thickness (within the specied range)
• Scratches and dents
• Water, oil, dirt, or dust in the pipe
• Flare looseness and leakage from welds
• Deterioration of copper pipe and heat insulator
Cautions for using existing pipe
• Do not reuse a are nut to prevent gas leaks.
Replace it with the supplied are nut and then process it to a are.
• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much
residue is discharged, wash the pipe.
• Check welds, if any, on the pipe for gas leaks.
When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.
• The pipe has been opened (disconnected from indoor unit or outdoor unit) for a long period.
• The pipe has been connected to an outdoor unit that does not use refrigerant R22, R410A.
• The existing pipe must have a wall thickness equal to or larger than the following thicknesses.
Reference outside
diameter (in (mm)) Wall thickness (in (mm))
1/4” (6.4) 0.03” (0.8)
3/8” (9.5) 0.03” (0.8)
1/2” (12.7) 0.03” (0.8)
• Do not use any pipe with a wall thickness less than these thicknesses due to insu󰀩cient pressure capacity.
8Grounding
WARNING
Be sure to connect the grounding wire. (grounding work)
Incomplete grounding may cause an electric shock.
Connect the grounding wire properly following applicable technical standards.
Connecting the grounding wire is essential to preventing electric shock and to reducing noise and electrical
chargeson the outdoor unit surface due to the high-frequency wave generated by the frequency converter
(inverter) in the outdoor unit.
If you touch the charged outdoor unit without a grounding wire, you may experience an electric shock.
9Finishing
After the refrigerant pipe, inter-unit wires, and drain pipe have been connected, make sure they are supported and
xed in place for the entire length.
Keep the power wires and system interconnection wires away from all factory wiring and piping.
10 Test run
• Turn on the circuit breaker at least 12 hours before starting the system to preheat the compressor and
 preventdamage.
To protect the compressor, power is supplied from the 208/230 VAC input to the unit to preheat the compressor.
•Check the following before starting a test run:
• That all pipes are connected securely without leaks.
• Thatthevalveisopen.
If the compressor is operated with the valve closed, the outdoor unit will become over pressurized, which may
damage the compressor or other components.
If there is a leak at a connection, air can be sucked in and the internal pressure further increases, which may
cause a burst or injury.
• Operate the air conditioner using the correct procedure as specied in the Owner’s Manual.
11 Annual maintenance
• For an air conditioning system that is operated on a regular basis, cleaning and maintenance of the indoor/
outdoor units are strongly recommended.
As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor/outdoor units will need to be
cleaned at least once every 3 months. This cleaning and maintenance should be carried out by a qualied
service person.
Failure to clean the indoor/outdoor units regularly will result in poor performance, icing, water leaking and even
compressor failure.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 14 26/4/2565 11:41:10

� 15 �
Stepstakentorecovertherefrigerant
1. Operate the indoor unit in the fan mode.
2. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
3. Hold down SW01 for at least 5 seconds, and check that D804 ashes slowly. (Fig. 1)
4. Press SW01 once to set the LED displays (D800 to D805) to the “refrigerant recovery LED display” shown
below. (Fig. 2)
(Fig.1) (Fig.2)
LED displays indicated when step 3 is taken Refrigerant recovery LED display
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Slow ashing : ON, : OFF, : Rapid ashing
5. Press SW02 to set D805 to rapid ashing. (Each time SW02 is pressed, D805 is switched between rapid
ashing and OFF.) (Fig. 3)
6. Hold down SW02 for at least 5 seconds, and when D804 ashes slowly and D805 lights, the forced cooling
operation is started. (Max. 10 minutes) (Fig. 4)
(Fig.3) (Fig.4)
LED displays indicated when step 5 is taken LED displays indicated when step 6 is taken
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Rapid ashing : ON, : OFF, : Slow ashing
7. After operating the system for at least 3 minutes, close the valve on the liquid side.
8. After the refrigerant has been recovered, close the valve on the gas side.
9. Hold down SW01 and SW02 simultaneously for at least 5 seconds. The LED displays are returned to the initial
status, and the cooling operation and indoor fan operation stop.
10. Turn o󰀨 the power.
* If there is any reason to doubt whether the recovery was successful in the course of this operation, hold down
SW01 and SW02 simultaneously for at least 5 seconds to return to the initial status, and then repeat the steps
for recovering the refrigerant.
29-EN 30-EN
Refrigerantrecovery
When recovering the refrigerant in situations such as when relocating an indoor unit or outdoor unit, the recovery
operation can be performed by operating the SW01 and SW02 switches on the P.C. Board of the outdoor unit.
A cover for the electric parts has been installed in order to provide protection from electric shocks while work is
being performed. Operate the service switches and check the LED displays with this electric parts cover in place.
Do not remove this cover while the power is still on.
DANGER
The entire P.C. Board of this air conditioner system is a high-voltage area.
When operating the service switches with the power of the system left on, wear electrically insulated gloves.
• In the initial LED display status, D805 is lighted as shown on the table below. If the initial status is not
established (if D805 is ashing), hold down the SW01 and SW02 service switches simultaneously for at least 5
seconds to return the LED displays to the initial status.
LED display initial status
D800
(Yellow)
D801
(Yellow)
D802
(Yellow)
D803
(Yellow)
D804
(Yellow)
D805
(Green)
or or or or or
Rapid
OFF or ashing
Rapid
OFF or ashing
Rapid
OFF or ashing
Rapid
OFF or ashing
Rapid
OFF or ashing ON
LED displays
D800
(Yellow)
D801
(Yellow)
D802
(Yellow)
D803
(Yellow)
D804
(Yellow)
D805
(Green)
• There are four LEDs display patterns.
: ON
: OFF
: Rapid ashing (5 times/sec.)
: Slow ashing (1 time/sec.)
Service switches
SW01, SW02
1131701101-00_S01_297x210_60p_S_p70_220426.indd 15 26/4/2565 11:41:10

� 16 �
How to check the existing piping settings
You can check whether the existing piping settings are enabled.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 ashes slowly. (Fig. 9)
3. Press SW01 four times to set the LED displays (D800 to D805) to the “LED displays for existing piping settings”
shown below. If the setting is enabled, D802 lights and D804 and D805 ash rapidly. (Fig. 10)
4. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial
status.
(Fig.9) (Fig.10)
LED displays indicated when step 3 is taken LED displays for existing piping settings
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Slow ashing : ON, : OFF, : Rapid ashing
When restoring the factory defaults
To restore the factory defaults in situations such as when relocating the units, follow the steps below.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 ashes slowly. (Fig. 11)
3. Press SW01 14 times to set the LED displays (D800 to D805) to the “LED displays restored to factory defaults”
shown below. (Fig. 12)
(Fig.11) (Fig.12)
LED displays indicated when step 2 is taken LED displays restored to factory defaults
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Slow ashing : ON, : OFF, : Rapid ashing
4. Hold down SW02 for at least 5 seconds, and check that D804 ashes slowly. (Fig. 13)
5. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.
(Fig.13)
LED displays indicated when step 4 is taken
D800 D801 D802 D803 D804 D805
: ON, : OFF, : Slow ashing
EN
31-EN 32-EN
Existing piping
The following settings are required when using a pipe Ø3/4" (19.1 mm) as the existing piping at the gas pipe side.
Steps taken to support existing piping
1. Set the circuit breaker to the ON position to turn on the power.
2. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
3. Hold down SW01 for at least 5 seconds, and check that D804 ashes slowly. (Fig. 5)
4. Press SW01 four times to set the LED displays (D800 to D805) to the “LED displays for existing piping settings”
shown below. (Fig. 6)
(Fig.5) (Fig.6)
LED displays indicated when step 3 is taken LED displays for existing piping settings
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Slow ashing : ON, : OFF, : Rapid ashing
5. Press SW02 to set D805 to rapid ashing. (Each time SW02 is pressed, D805 is switched between rapid
ashing and OFF.) (Fig. 7)
6. Hold down SW02 for at least 5 seconds, and check that D804 ashes slowly and that D805 lights. (Fig. 8)
(Fig.7) (Fig.8)
LED displays indicated when step 5 is taken LED displays indicated when step 6 is taken
D800 D801 D802 D803 D804 D805 D800 D801 D802 D803 D804 D805
: ON, : OFF, : Rapid ashing : ON, : OFF, : Slow ashing
7. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.
The existing piping is now supported by taking the above steps. In this status, the heating capacity may
decrease during heating depending on the outside air temperature and indoor temperature.
* If there is any reason to doubt whether establishing support was successful in the course of this operation, hold
down SW01 and SW02 simultaneously for at least 5 seconds to return to the initial status, and then repeat the
setting steps.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 16 26/4/2565 11:41:11

� 17 �
13 Troubleshooting
You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C. Board of the outdoor unit in addition
to using the check codes displayed on the wired remote controller of the indoor unit.
Use the LEDs and check codes for various checks. Details of the check codes displayed on the wired remote
controller of the indoor unit are described in the Installation Manual of the indoor unit.
LED displays and check codes
No. Error Display
D800 D801 D802 D803 D804 D805
1 Normal
2 Discharge temperature sensor (TD) error
3Heat exchanger temperature sensor (TE) error
4Heat exchanger temperature sensor (TL) error
5 Outside air temperature sensor (TO) error
6 Suction temperature sensor (TS) error
7Heat sink temperature sensor (TH) error
8Heat exchanger sensor (TE, TS) connection error
9 EEPROM error
10 Compressor breakdown
11 Compressor lock
12 Current detection circuit error
13 Case thermostat operation
14 Model data not set
15 Discharge temperature error
16 Power supply error
17 High pressure SW error
18 Heat sink overheating error
19 Gas leak detected
20 4-way valve reverse error
21 High pressure release operation
22 Fan system error
23 Drive device short-circuiting
24 Position detection circuit error
25 Compressor IPDU or other (not specically identied)
: ON, : OFF, : Rapid ashing (5 times/sec)
* The LEDs and switches are located at the top right
of the P.C. Board of the outdoor unit as shown in the
gure on the table below.
LED displays
D800
(Yellow)
D801
(Yellow)
D802
(Yellow)
D803
(Yellow)
D804
(Yellow)
D805
(Green)
33-EN 34-EN
14 Appendix
[1] Existing piping
Work instructions
The existing R22 and R407C piping can be reused for
our digital inverter R410A product installations.
WARNING
Conrmingtheexistenceofscratchesor
dentsontheexistingpipesandconrmingthe
reliabilityofthepipestrengthareconventionally
referred to the local site.
Ifthespeciedconditionscanbecleared,itis
possible to update existing R22 and R407C pipes
to those for R410A models.
Basic conditions needed to reuse
existing pipes
Check and observe the presence of three conditions
in the refrigerant piping works.
1. Dry (There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There are no refrigerant leaks.)
Restrictions for use of existing pipes
In the following cases, the existing pipes should
not be reused as they are. Clean the existing pipes
or exchange them with new pipes.
1. When a scratch or dent is heavy, be sure to use
new pipes for the refrigerant piping works.
2. When the existing pipe thickness is thinner than the
specied “Pipe diameter and thickness,” be sure to
use new pipes for the refrigerant piping works.
• The operating pressure of R410A is high
(1.6 times that of R22 and R407C). If there is a
scratch or dent on the pipe or a thinner pipe is
used, the pressure strength may be inadequate,
which may cause the pipe to break in the worst
case.
* Pipe diameter and thickness (in (mm))
Pipe outer diameter 1/4” (6.4) 3/8” (9.5) 1/2” (12.7)
Thickness R410A 0.03” (0.8) 0.03” (0.8) 0.03” (0.8)
3. When the outdoor unit was left with the pipes
disconnected, or the gas leaked from the pipes and
the pipes were not repaired and relled.
• There is the possibility of rain water or air,
including moisture, entering the pipe.
4. When refrigerant cannot be recovered using a
refrigerant recovery unit.
• There is the possibility that a large quantity of
dirty oil or moisture remains inside the pipes.
5. When a commercially available dryer is attached to
the existing pipes.
• There is the possibility that copper green rust has
been generated.
6. When the existing air conditioner is removed after
refrigerant has been recovered.
Check if the oil is judged to be clearly di󰀨erent from
normal oil.
• The refrigerator oil is copper rust green in color:
There is the possibility that moisture has mixed
with the oil and rust has been generated inside
the pipe.
• There is discolored oil, a large quantity of
residue, or a bad smell.
• A large quantity of shiny metal dust or other wear
residue can be seen in the refrigerant oil.
7. When the air conditioner has a history of the
compressor failing and being replaced.
• When discolored oil, a large quantity of residue,
shiny metal dust, or other wear residue or
mixture of foreign matter is observed, trouble will
occur.
8. When temporary installation and removal of the air
conditioner are repeated such as when leased etc.
9. If the type of refrigerator oil of the existing air
conditioner is other than the following oil (Mineral
oil), Suniso, Freol-S, MS (Synthetic oil), alkyl
benzene (HAB, Barrel-freeze), ester series, PVE
only of ether series.
• The winding-insulation of the compressor may
deteriorate.
NOTE
The above descriptions are results have been
conrmed by our company and represent our
views on our air conditioners, but do not guarantee
the use of the existing pipes of air conditioners
that have adopted R410A in other companies.
Curing of pipes
When removing and opening the indoor or outdoor
unit for a long time, cure the pipes as follows:
• Otherwise rust may be generated when moisture or
foreign matter due to condensation enters the pipes.
• The rust cannot be removed by cleaning, and new
pipes are necessary.
Placement
location Term Curing manner
Outdoors 1 month or more Pinching
Less than 1 month Pinching or taping
Indoors Every time
1131701101-00_S01_297x210_60p_S_p70_220426.indd 17 26/4/2565 11:41:11

� 18 �
Connect the indoor / outdoor units to the existing pipe.
• Use a are nut attached to the main unit for the
indoor / outdoor units. (Do not use the are nut of
the existing pipe.)
• Re-machine the are machining size to size for
R410A.
Is it possible to operate the existing air conditioner?
• Remove the existing air conditioner from the piping
and carry out ushing (nitrogen pressure 0.5 MPa)
to remove any remains inside of the pipe.
Note: In case of twin pipes, also be sure to ush the
branching pipe.
Was largely discolored oil or a large quantity of
remains discharged?
(When the oil deteriorates, the color of the oil
changes to a muddy or black color.)
Nitrogen gas pressure 0.5 MPa
Clean the pipes or use new pipes.
(If there is discharge of remains, it is judged that a
large quantity of remains are present.)
NO
NO
YES
YES
YES
NO
Existing pipes: Cannot be used.
• Use new pipes.
Are there scratches or dents on the existing pipes?
• After the existing air conditioner is operated in
cooling mode for approx. 30 minutes or longer,*
recover the refrigerant.
• For cleaning the pipes and recovering oil
• Refrigerant recovery: Pump down method
Test run
• (Airtight test), Vacuum dry, Refrigerant charge, Gas
leak check
15 Specications
ThisproductcontainsuorinatedgreenhousegasescoveredbytheKyotoProtocol
Chemical Name of Gas R410A
Global Warming Potential (GWP) of Gas 1,975
CAUTION
1. Paste the enclosed refrigerant label adjacent to the charging and/or recovering location.
2. Clearly write the charged refrigerant quantity on the refrigerant label using indelible ink. Then, place the
included transparent protective sheet over the label to prevent the writing from rubbing o󰀨.
3. Prevent emission of the contained uorinated greenhouse gas. Ensure that the uorinated greenhouse
gas is never vented to the atmosphere during installation, service or disposal. When any leakage of the
contained uorinated greenhouse gas is detected, the leak shall be stopped and repaired as soon as
possible.
4. Only qualied service personnel are allowed to access and service this product.
5. Any handling of the uorinated greenhouse gas in this product, such as when moving the product or
recharging the gas, shall comply under (EC) Regulation No. 842/2006 on certain uorinated greenhouse
gases and any relevant local legislation.
6. Periodical inspections for refrigerant leaks may be required depending on European or local legislation.
7. Contact dealers, installers, etc., for any questions.
EN
35-EN 36-EN
Pipingnecessarytochangethearenut/machining
size due to pipe compression
1) Flare nut width: H
(in (mm))
H
Copper pipe
outer diameter 1/4”(6.4) 3/8”(9.5) 1/2”(12.7)
For
R410A 0.67”(17) 0.87”(22) 1.02”(26)
2) Flare machining size: A
(in (mm))
ACopper pipe
outer diameter 1/4”(6.4) 3/8”(9.5) 1/2”(12.7)
For
R410A 0.36”(9.1) 0.52”(13.2) 0.65”(16.6)
Becomes a little larger for R410A
Do not apply refrigerator oil to the are surface.
1131701101-00_S01_297x210_60p_S_p70_220426.indd 18 26/4/2565 11:41:11

� 19 �
Warnings on refrigerant leakage
Check of concentration limit
Theroominwhichtheairconditioneristobeinstalledrequiresadesignthatintheeventofrefrigerant
gas leaking out, its concentration will not exceed a set limit.
The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia,
and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than
air, it poses the risk of su󰀨ocation if its concentration should rise excessively. Su󰀨ocation from leakage of R410A is
almost non-existent.
If a conditioner system is to be installed in a small room, select a suitable model and installation procedure so
that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an
emergency, measures can be made before injury can occur).
In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install
mechanical ventilation combined with a gas leak detection device.
The concentration is as given below.
Total amount of refrigerant (kg) ≤ Concentration limit (kg/m3)
Min. volume of the indoor unit installed room (m3)
The concentration limit of R410A which is used in multi air conditioners is 0.3 kg/m3.
37-EN 38-EN
1131701101-00_S01_297x210_60p_S_p70_220426.indd 19 26/4/2565 11:41:11