manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. Toshiba
  6. •
  7. Air Conditioner
  8. •
  9. Toshiba RAV-HM301SDTY-E User manual

Toshiba RAV-HM301SDTY-E User manual

Other manuals for RAV-HM301SDTY-E

2

This manual suits for next models

3

Other Toshiba Air Conditioner manuals

Toshiba HFC R407C User manual

Toshiba

Toshiba HFC R407C User manual

Toshiba RAV-SP181BT-UL User manual

Toshiba

Toshiba RAV-SP181BT-UL User manual

Toshiba RAV-SM564UTP-E (TR) User manual

Toshiba

Toshiba RAV-SM564UTP-E (TR) User manual

Toshiba RAS-167SKV-E5 User manual

Toshiba

Toshiba RAS-167SKV-E5 User manual

Toshiba MMD- AP0091BH User manual

Toshiba

Toshiba MMD- AP0091BH User manual

Toshiba MXZ-2DM40VA User manual

Toshiba

Toshiba MXZ-2DM40VA User manual

Toshiba MMY-MAP0724HT6UL User manual

Toshiba

Toshiba MMY-MAP0724HT6UL User manual

Toshiba RAS-24J2KVG-E User manual

Toshiba

Toshiba RAS-24J2KVG-E User manual

Toshiba RAV-SP1102AT-E User manual

Toshiba

Toshiba RAV-SP1102AT-E User manual

Toshiba RAC-45NHE Mounting instructions

Toshiba

Toshiba RAC-45NHE Mounting instructions

Toshiba RB-N105S-G User manual

Toshiba

Toshiba RB-N105S-G User manual

Toshiba RAS-M10YDV-E User manual

Toshiba

Toshiba RAS-M10YDV-E User manual

Toshiba RAV-SP1104AT8-E1 User manual

Toshiba

Toshiba RAV-SP1104AT8-E1 User manual

Toshiba RAS-B10N3KV2-E User manual

Toshiba

Toshiba RAS-B10N3KV2-E User manual

Toshiba RAS-18NKHD-E5 User manual

Toshiba

Toshiba RAS-18NKHD-E5 User manual

Toshiba RAV-SP1104AT8-E User manual

Toshiba

Toshiba RAV-SP1104AT8-E User manual

Toshiba RAS-H10L4KCVG-V User manual

Toshiba

Toshiba RAS-H10L4KCVG-V User manual

Toshiba RAS-M10PKVPG-E User manual

Toshiba

Toshiba RAS-M10PKVPG-E User manual

Toshiba RAS-18N3KV2 Series User manual

Toshiba

Toshiba RAS-18N3KV2 Series User manual

Toshiba RAV-SM404MUT-E User manual

Toshiba

Toshiba RAV-SM404MUT-E User manual

Toshiba SMMS-e User manual

Toshiba

Toshiba SMMS-e User manual

Toshiba MiNi-SMMS MCY-MAP0401HT User manual

Toshiba

Toshiba MiNi-SMMS MCY-MAP0401HT User manual

Toshiba RAV-SP181BT-UL User manual

Toshiba

Toshiba RAV-SP181BT-UL User manual

Toshiba RAS-18N3KV2 Series User manual

Toshiba

Toshiba RAS-18N3KV2 Series User manual

Popular Air Conditioner manuals by other brands

Fujitsu ASYG 09 LLCA installation manual

Fujitsu

Fujitsu ASYG 09 LLCA installation manual

York HVHC 07-12DS Installation & owner's manual

York

York HVHC 07-12DS Installation & owner's manual

Carrier Fan Coil 42B Installation, operation and maintenance manual

Carrier

Carrier Fan Coil 42B Installation, operation and maintenance manual

intensity IDUFCI60KC-3 installation manual

intensity

intensity IDUFCI60KC-3 installation manual

Frigidaire FAC064K7A2 Factory parts catalog

Frigidaire

Frigidaire FAC064K7A2 Factory parts catalog

Sanyo KS2432 instruction manual

Sanyo

Sanyo KS2432 instruction manual

LG MultiV Series installation manual

LG

LG MultiV Series installation manual

CLIMAVENETA a-CHD U-2T 606+2209 OPERATING AND INSTALLATION Manual

CLIMAVENETA

CLIMAVENETA a-CHD U-2T 606+2209 OPERATING AND INSTALLATION Manual

Midea EWK06CW5 user manual

Midea

Midea EWK06CW5 user manual

Pioneer FAB Series installation manual

Pioneer

Pioneer FAB Series installation manual

SPT WA-1511S user manual

SPT

SPT WA-1511S user manual

Mitsubishi Electric Mr.Slim MSZ-A24NA operating instructions

Mitsubishi Electric

Mitsubishi Electric Mr.Slim MSZ-A24NA operating instructions

Mitsubishi Electric PUHZ-RP50VHA4 Service manual

Mitsubishi Electric

Mitsubishi Electric PUHZ-RP50VHA4 Service manual

Panasonic CS-S18HKQ Service manual

Panasonic

Panasonic CS-S18HKQ Service manual

Panasonic CS-E15NKE3 operating instructions

Panasonic

Panasonic CS-E15NKE3 operating instructions

Gree GWH18TC-K3DNA1B/I Service manual

Gree

Gree GWH18TC-K3DNA1B/I Service manual

Friedrich ZoneAire Compact P08SA owner's manual

Friedrich

Friedrich ZoneAire Compact P08SA owner's manual

Daikin R32 Split Series installation manual

Daikin

Daikin R32 Split Series installation manual

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.

English
D0X7303301- 01
For commercial use
R32
AIR CONDITIONER (SPLIT TYPE)
Owner’s Manual
Indoor Unit
Model name:
<Slim Duct Type>
RAV-HM301SDTY-E
RAV-HM401SDTY-E
RAV-HM561SDTY-E
RAV-HM801SDTY-E
OM_D0X7303301-01_EN_Print.book Page 1 Friday, May 19, 2023 6:48 PM
– 1 –
1-EN 2-EN
Original instruction
Thank you very much for purchasing TOSHIBA Air Conditioner.
Please read this owner’s manual carefully before using your Air Conditioner.
• Be sure to obtain the “Owner’s manual” and “Installation manual” from constructor (or dealer).
• Request to constructor or dealer.
Please clearly explain the contents of the Owner’s manual and hand over it.
ADOPTION OF R32 REFRIGERANT
This Air Conditioner has adopted a HFC (R32) which does not destroy the ozone layer.
Be sure to combine with an outdoor unit for the R32 refrigerant.
Contents
1 Precautions for Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 Précautions de sécurité. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1 Vorsichtsmaßnahmen für die Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1 Precauzioni per la sicurezza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
1 Precauciones de seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
1 Precauções de segurança. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
1 Veiligheidsvoorzorgen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
1Προφυλάξεις ασφαλείας . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
1Меры предосторожности . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
2 Applicable controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
3 Test run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
5 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
6 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
7 Notice code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
OM_D0X7303301-01_EN_Print.book Page 1 Friday, May 19, 2023 6:48 PM
– 2 –
EN
Thank you for purchasing this Toshiba air conditioner.
Please read carefully through these instructions that contain important information, which complies with the
''Machinery'' Directive(Directive 2006/42/EC), and ensure that you understand them.
After completing the installation work, hand over this Installation Manual as well as the Owner’s Manual provided
with the outdoor unit to the user, and ask the user to keep them in a safe place for future reference.
Generic denomination: Air conditioner
Definition of qualified installer or qualified service person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service
person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the
table below.
Agent Qualifications and knowledge which the agent must have
Qualified
installer (*1)
• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners
made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and
remove the air conditioners made by Toshiba Carrier Corporation 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 qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications 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 Toshiba Carrier Corporation 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 qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications 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
Toshiba Carrier Corporation 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 qualified installer who is allowed to work at heights has been trained in matters relating to working at
heights with the air conditioners made by Toshiba Carrier Corporation 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.
Qualified service
person (*1)
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair,
maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation 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 qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications 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 Toshiba Carrier Corporation 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 qualified service person who is allowed to do the refrigerant handling and piping work involved in
installation, repair, relocation and removal has the qualifications 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
Toshiba Carrier Corporation 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 qualified 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 Toshiba Carrier Corporation 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.
Definition 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.
These safety cautions describe important matters concerning safety to prevent injury to users or other people and
damages to property. Please read through this manual after understanding the contents below (meanings of
indications), and be sure to follow the description.
Work undertaken Protective gear worn
All types of work Protective gloves
‘Safety’ working clothing
Electrical-related work
Gloves to provide protection from electric shock
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 toecap
Repair of outdoor unit Gloves to provide protection for electricians
Indication Meaning of Indication
WARNING Text set off in this manner indicates that failure to adhere to the directions in the warning could result
in serious bodily harm (1) or loss of life if the product is handled improperly.
CAUTION Text set off in this manner indicates that failure to adhere to the directions in the caution could result in
slight injury (2) or damage (3) to property if the product is handled improperly.
1: Serious bodily harm indicates loss of eyesight, injury, burns, electric shock, bone fracture, poisoning, and other
injuries which leave aftereffect and require hospitalization or long-term treatment as an outpatient.
2: Slight injury indicates injury, burns, electric shock, and other injuries which do not require hospitalization or long-
term treatment as an outpatient.
3: Damage to property indicates damage extending to buildings, household effects, domestic livestock, and pets.
WARNING
(Risk of fire)
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of
outdoor unit.
In case that refrigerant type is R32, this unit uses a flammable refrigerant.
If refrigerant leaks and comes in contact with fire or heating part, it will create
harmful gas and there is risk of fire.
Read the OWNER’S MANUAL carefully before operation.
Service personnel are required to carefully read the OWNER’S MANUAL and INSTALLATION MANUAL
before operation.
Further information is available in the OWNER’S MANUAL, INSTALLATION MANUAL, and the like.
3-EN 4-EN
OM_D0X7303301-01_EN_Print.book Page 2 Friday, May 19, 2023 6:48 PM
– 3 –
5-EN 6-EN
Warning Indications on the Air Conditioner Unit
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
WARNING
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned when removing this panel.
CAUTION
Do not touch the aluminium fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before the operation, otherwise there might
be the burst.
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote
electric power supplies
before servicing.
WARNING
Moving parts.
Do not operate unit with grille
removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned
when removing this panel.
CAUTION
Do not touch the aluminum
fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before
the operation, otherwise there
might be the burst.
Warning indication Description
1Precautions for Safety
The manufacturer shall not assume any liability for the damage
caused by not observing the description of this manual.
WARNING
General
• Before starting to install the air conditioner, read through the
Installation Manual carefully, and follow its instructions to install the
air conditioner.
• Only a qualified installer or service person is allowed to do
installation work. Inappropriate installation may result in water
leakage, electric shock or fire.
• Do not use any refrigerant different from the one specified for
complement or replacement. Otherwise, abnormally high pressure
may be generated in the refrigeration cycle, which may result in a
failure or explosion of the product or an injury to your body.
• Before opening the intake grille of the indoor unit or service panel
of the outdoor unit, set the circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in
electric shocks through contact with the interior parts. Only a
qualified installer (*1) or qualified service person (*1) is allowed to
remove the intake grille of the indoor unit or service panel of the
outdoor unit and do the work required.
• Before carrying out the installation, maintenance, repair or removal
work, set the circuit breaker to the OFF position. Otherwise, electric
shocks may result.
• Place a “Work in progress” sign near the circuit breaker while the
installation, maintenance, repair or removal work is being carried
out. There is a danger of electric shocks if the circuit breaker is set
to ON by mistake.
• Only a qualified installer (*1) or qualified service person (*1) is
allowed to undertake work at heights using a stand of 50 cm or more
or to remove the intake grille of the indoor unit to undertake work.
OM_D0X7303301-01_EN_Print.book Page 3 Friday, May 19, 2023 6:48 PM
– 4 –
EN
• Wear protective gloves and safety work clothing during installation,
servicing and removal.
• Do not touch the aluminum fin of the unit. You may injure yourself if
you do so. If the fin must be touched for some reason, first put on
protective gloves and safety work clothing, and then proceed.
• Do not climb onto or place objects on top of the outdoor unit. You
may fall or the objects may fall off of the outdoor unit and result in
injury.
• When work is performed at heights, use a ladder which complies
with the ISO 14122 standard, and follow the procedure in the
ladder’s instructions. Also wear a helmet for use in industry as
protective gear to undertake the work.
• Before cleaning the filter or other parts of the indoor unit, set the
circuit breaker to OFF without fail, and place a “Work in progress”
sign near the circuit breaker before proceeding with the work.
• Before working at heights, put a sign in place so that no-one will
approach the work location, before proceeding with the work. Parts
and other objects may fall from above, possibly injuring a person
below. While carrying out the work, wear a helmet for protection
from falling objects.
• The refrigerant used by this air conditioner is the R32.
• The air conditioner must be transported in stable condition. If any
part of the product is broken, contact the dealer.
• When the air conditioner must be transported by hand, carry it by
two or more people.
• Do not move or repair any unit by yourself. There is high voltage
inside the unit. You may get electric shock when removing the
cover and main unit.
• This appliance is intended to be used by expert or trained users in
shops, in light industry, or for commercial use by lay persons.
Selection of installation location
• When the air conditioner is installed in a small room, provide
appropriate measures to ensure that the concentration of
refrigerant leakage occur in the room does not exceed the critical
level.
• Do not install in a location where flammable gas leaks are possible.
If the gas leak and accumulate around the unit, it may ignite and
cause a fire.
• To transport the air conditioner, wear shoes with additional
protective toecap.
• To transport the air conditioner, do not take hold of the bands
around the packing carton. You may injure yourself if the bands
should break.
• Install the indoor unit at least 2.5 m above the floor level since
otherwise the users may injure themselves or receive electric
shocks if they poke their fingers or other objects into the indoor unit
while the air conditioner is running.
• Do not place any combustion appliance in a place where it is
directly exposed to the wind of air conditioner, otherwise it may
cause imperfect combustion.
• Appliance and pipe-work shall be installed, operated and stored in
a room with a floor area larger than Amin m2.
How to get Amin m2: Amin = (M / (2.5 × 0.22759 × h0))2
M is the refrigerant charge amount in appliance in kg;
h0is the installation height of the appliance in m:
0.6 m for floor standing / 1.8 m for wall mounted / 1.0 m for window
mounted / 2.2 m for ceiling mounted.
(R32 refrigerant models only. For detail, refer to Installation Manual
of the outdoor unit.)
Installation
• Suction duct length must be longer than 850mm.
• When the indoor unit is to be suspended, the designated hanging
bolts (M10 or W3/8) and nuts (M10 or W3/8) must be used.
7-EN 8-EN
OM_D0X7303301-01_EN_Print.book Page 4 Friday, May 19, 2023 6:48 PM
– 5 –
9-EN 10-EN
• Install the air conditioner securely in a location where the base can
sustain the weight adequately. If the strength is not enough, the
unit may fall down resulting in injury.
• Follow the instructions in the Installation Manual to install the air
conditioner. Failure to follow these instructions may cause the
product to fall down or topple over or give rise to noise, vibration,
water leakage or other trouble.
• Carry out the specified installation work to guard against the possibility
of high winds and earthquake. If the air conditioner is not installed
appropriately, a unit may topple over or fall down, causing an accident.
• If refrigerant gas has leaked during the installation work, ventilate
the room immediately. If the leaked refrigerant gas comes in
contact with fire, noxious gas may generate.
• Use forklift truck to carry in the air conditioner units and use winch
or hoist at installation of them.
• Helmet must be worn to protect your head from falling objects.
Especially, when you work under an inspection opening, helmet
must be worn to protect your head from falling objects from the
opening.
• The unit can be accessed from the service panel shown in the figure.
• After the unit has been suspended and installed, take dust-proof
measures for the air intake and air discharge openings (cover
these openings) to ensure that no dust will enter inside the unit at
any point until the construction work has been completed.
Refrigerant piping
• 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 refrigerant pipe, the compressor
sucks air and the refrigeration cycles is over pressurized, which
may cause an injury.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut
after a long period, which may result in refrigerant leakage.
• After the installation work, confirm that refrigerant gas does not
leak. If refrigerant gas leaks into the room and flows near a fire
source, such as a cooking range, noxious gas may be generated.
• When the air conditioner has been installed or relocated, follow the
instructions in the Installation Manual and purge the air completely
so that no gases other than the refrigerant will be mixed in the
refrigerating cycle. Failure to purge the air completely may cause
the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.
• The charge hose must be connected tightly and in a proper
manner.
Electrical wiring
• Only a qualified installer (*1) or qualified service person (*1) is
allowed to carry out the electrical work of the air conditioner. Under
no circumstances must this work be done by an unqualified
individual since failure to carry out the work properly may result in
electric shocks and/or electrical leaks.
• To connect the electrical wires, repair the electrical parts or
undertake other electrical jobs, wear gloves to provide protection
for electricians, insulating shoes and clothing to provide protection
from electric shocks. Failure to wear this protective gear may result
in electric shocks.
• Use wiring that meets the specifications in the Installation Manual
and the stipulations in the local regulations and laws. Use of wiring
which does not meet the specifications may give rise to electric
shocks, electrical leakage, smoking and/or a fire.
• Be sure to connect earth wire. (Grounding work)
Incomplete earthing causes an electric shock.
• Do not connect earth wires to gas pipes, water pipes, and lightning
conductor or telephone earth wires.
• After completing the repair or relocation work, check that the earth
wires are connected properly.
OM_D0X7303301-01_EN_Print.book Page 5 Friday, May 19, 2023 6:48 PM
– 6 –
EN
• Install a circuit breaker that meets the specifications in the
Installation Manual and the stipulations in the local regulations and
laws.
• Install the circuit breaker where it can be easily accessed by the
agent.
• When installing the circuit breaker outdoors, install one which is
designed to be used outdoors.
• Under no circumstances, the power supply wire or the indoor and
outdoor connecting wire must be connected in the middle
(Connection using a solderless terminal etc.).
Connection trouble in the places where the wire is connected in the
middle may give rise to smoking and/or a fire.
• Electrical wiring work shall be conducted according to law and
regulation in the community and Installation Manual.
Failure to do so may result in electrocution or short circuit.
Test run
• Before operating the air conditioner after having completed the
work, check that the electrical control box cover of the indoor unit
and service panel of the outdoor unit are closed, and set the circuit
breaker to the ON position. You may receive an electric shock if the
power is turned on without first conducting these checks.
• If there is any kind of trouble (such as check code display has
appeared, smell of burning, abnormal sounds, the air conditioner
fails to cool or heat or water is leaking) has occurred in the air
conditioner, do not touch the air conditioner yourself but set the
circuit breaker to the OFF position, and contact a qualified service
person. Take steps to ensure that the power will not be turned on
(by marking “out of service” near the circuit breaker, for instance)
until qualified service person arrives. Continuing to use the air
conditioner in the trouble status may cause mechanical problems
to escalate or result in electric shocks or other trouble.
• After the work has finished, use an insulation tester set (500V
Megger) to check the resistance is 1 MΩor more between the
charge section and the non-charge metal section (Earth section).
If the resistance value is low, a disaster such as a leak or electric
shock is caused at user’s side.
• Upon completion of the installation work, check for refrigerant leaks
and check the insulation resistance and water drainage. Then
conduct a test run to check that the air conditioner is operating
properly.
Explanations given to user
• Upon completion of the installation work, tell the user where the
circuit breaker is located. If the user does not know where the
circuit breaker is, he or she will not be able to turn it off in the event
that trouble has occurred in the air conditioner.
• After the installation work, follow the Owner’s Manual to explain to
the customer how to use and maintain the unit.
Relocation
• Only a qualified installer (*1) or qualified service person (*1) is
allowed to relocate the air conditioner. It is dangerous for the air
conditioner to be relocated by an unqualified individual since a fire,
electric shocks, injury, water leakage, noise and/or vibration may
result.
• 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 the compressor still operating will cause air or other gas to be
sucked in, raising the pressure inside the refrigeration cycle to an
abnormally high level, and possibly resulting in rupture, injury, or
other trouble.
(*1) Refer to the “Definition of qualified installer or qualified service
person”.
11-EN 12-EN
OM_D0X7303301-01_EN_Print.book Page 6 Friday, May 19, 2023 6:48 PM
– 7 –
13-EN 14-EN
CAUTIONCAUTION
This Air Conditioner has adopted a refrigerant HFC (R32) which
does not destroy the ozone layer.
• As the R32 refrigerant is easily affected by impurities such us
moisture, oxidized film, oil, etc., due to the high pressure, be
careful not to allow the moisture, dirt, existing refrigerant,
refrigerating machine oil, etc., to get mixed up in the refrigeration
cycle during the installation work.
• A special tool for the R32 refrigerant is required for installation.
• Use a new and clean piping materials for the connecting pipe so
that moisture and dirt are not mixed together during the installation
work.
To Disconnect the Appliance from Main Power Supply.
• This appliance must be connected to the main power supply by
means of a switch with a contact separation of at least 3 mm.
Precautions for using R32 refrigerant
The basic installation work procedures are the same as conventional
refrigerant (R410A, R22) models.
However, Please read through this manual after understanding the
contents below;
These safety cautions describe important matters concerning safety
to prevent injury to users or other people and damages to property.
Please read through this manual after understanding the contents
below (meanings of indications), and be sure to follow the description;
WARNING
• Models that use refrigerant R32 have a different charging port
thread diameter to prevent erroneous charging with refrigerant R22
and for safety.
• 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.)
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odor.
• The manufacturer may provide other suitable examples or may
provide additional information about the refrigerant odor.
CAUTIONCAUTION
When a flammable refrigerant is used, all appliances shall be
charged with refrigerant at the manufacturing location or charged on
site as recommended by the manufacturer.
A part of an appliance that is charged on site, which requires brazing
or welding in the installation shall not be shipped with a flammable
refrigerant charge. Joints made in the installation between parts of
the refrigerating system, with at least one part charged, shall be
made in accordance with the following.
• A brazed, welded, or mechanical connection shall be made before
opening the valves to permit refrigerant to flow between the
refrigerating system parts. A vacuum valve shall be provided to
evacuate the interconnecting pipe and/or any uncharged
refrigerating system part.
• Mechanical connectors used indoors shall comply with ISO 14903.
When mechanical connectors are reused indoors, sealing parts
shall be renewed. When flared joints are reused indoors, the flare
part shall be re-fabricated.
• Refrigerant tubing shall be protected or enclosed to avoid damage.
Flexible refrigerant connectors (such as connecting lines between
the indoor and outdoor unit) that may be displaced during normal
operations shall be protected against mechanical damage.
OM_D0X7303301-01_EN_Print.book Page 7 Friday, May 19, 2023 6:48 PM
– 8 –
EN
General (Installation space / area)
• The installation of pipe-work shall be kept to a minimum.
• Pipe-work shall be protected from physical damage.
• The compliance with national gas regulations shall be observed.
• The mechanical connections shall be accessible for maintenance
purposes.
• In cases that require mechanical ventilation, ventilation openings
shall be kept clear of obstruction.
• When disposing of the product is used, be based on national
regulations with properly processed.
• The servicing shall be performed only as recommended by the
manufacturer.
• Where the appliance using flammable refrigerants is installed, Be
aware that;
- The appliance shall be stored in a well-ventilated area where the
room size corresponds to the room area as specified for
operation.
- The appliance shall be stored in a room without continuously
operating open flames (for example an operating gas appliance)
and ignition sources (for example an operating electric heater).
- The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Equipment piping in the occupied space shall be installed in such a
way to protect against accidental damage in operation and service.
• Precautions shall be taken to avoid excessive vibration or pulsation
to refrigerating piping.
• Protection devices, piping and fittings shall be protected as far as
possible against adverse environmental effects, for example, the
danger of water collecting and freezing in relief pipes or the
accumulation of dirt and debris.
• Provision shall be made for expansion and contraction of long runs
of piping.
• Piping in refrigerating systems shall be so designed and installed to
minimize the likelihood hydraulic shock damaging the system.
• Solenoid valves shall be correctly positioned in the piping to avoid
hydraulic shock.
• Solenoid valves shall not block in liquid refrigerant unless adequate
relief is provided to the refrigerant system low pressure side.
• Steel pipes and components shall be protected against corrosion
with a rustproof coating before applying any insulation.
• Flexible pipe elements shall be protected against mechanical
damage, excessive stress by torsion, or other forces. They should
be checked for mechanical damage annually.
• The indoor equipment and pipes shall be securely mounted and
guarded such that accidental rupture of equipment cannot occur
from such events as moving furniture or reconstruction activities.
• Where safety shut off valves are specified, the minimum room area
may be determined based on the maximum amount of refrigerant
that can be leaked as determined in Installation Manual.
• Where safety shut off valves are specified, the location of the valve
in the refrigerating system relative to the occupied spaces shall be
as described in Installation Manual.
• Field-made refrigerant joints indoors shall be tightness tested. The
test method shall have a sensitivity of 5 grams per year of
refrigerant or better under a pressure of at least 0,25 times the
maximum allowable pressure. No leak shall be detected.
• The total refrigerant charge in the system cannot exceed the
requirements for minimum floor area of the smallest room that is
served. For minimum floor area requirements for indoor units, see
the installation and owner's manual of the outdoor unit.
• When connecting to an outdoor unit of R32 refrigerant and using a
leak detector, always turn on the power of the indoor unit after
installation except during service in order to detect refrigerant
leakage and take safety measures.
15-EN 16-EN
OM_D0X7303301-01_EN_Print.book Page 8 Friday, May 19, 2023 6:48 PM
– 9 –
17-EN 18-EN
Unventilated area
• The appliance shall be stored so as to prevent mechanical damage
from occurring.
Information on servicing
1. Check to the area
• Prior to beginning work on systems containing flammable
refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimized. For repair to the refrigerating system, the
precautions in item 2 to 6 shall be complied with prior to conducting
work on the system.
2. Work procedure
• Work shall be undertaken under a controlled procedure so as to
minimize the risk of a flammable gas or vapour being present while
the work is being performed.
• When connecting to an outdoor unit of R32 refrigerant and using a
leak detector, the fan may automatically operate even if the air
conditioner is stopped when a refrigerant leak is detected. Be
careful not to get injured by the fan.
3. General work area
• All maintenance staff and others working in the local area shall be
instructed on the nature of work being carried out.
• Work in confined spaces shall be avoided.
• The area around the workspace shall be sectioned off.
• Ensure that the conditions within the area have been made safe by
control of flammable material.
4. Checking for presence of refrigerant
• The area shall be checked with an appropriate refrigerant detector
prior to and during work, to ensure the technician is aware of
potentially flammable atmospheres.
• Ensure that the leak detection equipment being used is suitable for
use with all applicable refrigerants, i.e. non sparking, adequately
sealed or intrinsically safe.
5. Presence of fire extinguisher
• If any hot work is to be conducted on the refrigeration equipment or
any associated parts, appropriate fire extinguishing equipment
shall be available on hand.
• Have a dry powder or CO2fire extinguisher adjacent to the
charging area.
6. No ignition sources
• No person carrying out work in relation to a refrigeration system
which involves exposing any pipe work shall use any sources of
ignition in such a manner that it may lead to the risk of fire or
explosion.
• All possible ignition sources including cigarette smoking, should be
kept sufficiently far away from the site of installation, repairing,
removing and disposal, during which refrigerant can possibly be
released to the surrounding space.
• Prior to work taking place, the area around the equipment is to be
surveyed to make sure that there are no flammable hazards or
ignition risks. "No Smoking" signs shall be displayed.
7. Ventilated area
• Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting any hot
work.
• A degree of ventilation shall continue during the period that the
work is carried out.
• The ventilation should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
8. Checks to the refrigeration equipment
• Where electrical components are being changed, installer shall be
fit for the purpose and to the correct specification.
OM_D0X7303301-01_EN_Print.book Page 9 Friday, May 19, 2023 6:48 PM