Toshiba RAS-M07G3DV Series, RAS-M10G3DV Series, RAS-M13G3DV Series, RAS-M16G3DV Series Installation Manual

EG55760001-00

English

AIR CONDITIONER (MULTI-SPLIT TYPE)

Installation Manual

Indoor Unit

Model name:

<Concealed Duct Type>

RAS-M07G3DV Series
RAS-M10G3DV Series
RAS-M13G3DV Series
RAS-M16G3DV Series

Español

Français

Italiano

Deutsch

Português

Ελληνικα

Türkçe

Polski

Česky

Русский

Hrvatski

Magyar

Nederlands

Svenska

Suomi

Norsk

Dansk

Română

Български

Eesti

Latviski

Slovenčina

Slovenščina

– 1 –

Installation Manual

Contents

1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Selection of installation place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Duct design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

9 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1 Precautions for safety

The manufacturer shall not assume any liability for the damage
caused by not observing the description of this manual.
Be sure to read this installation manual carefully before installing.
It is recommended that maintenance be performed by a specialist
when the unit has been operated for a long time.
Be sure to follow the precautions provided here to avoid safety risks.
The symbols and their meanings are shown below.
DANGER : It indicates that incorrect use of this unit can result in a

high possibility of severe injury (*1) or death.

WARNING : It indicates that incorrect use of this unit may cause

severe injury or death.

CAUTION : It indicates that incorrect use of this unit may cause

personal injury (*2), or property damage (*3).

*1 : A severe injury refers to blindness, injury, burns (hot

or cold), electrical shock, bone fracture, or poisoning
that leaves aftereffects and requires hospitalization
or extended out-patient treatment.

*2 : Personal injury means a slight accident, burn, or

electrical shock which does not require admission or
repeated hospital treatment.

*3 : Property damage means greater damage which

affects assets or resources.
Power supply cord of parts of appliance for outdoor use shall be at
least polychloroprene sheathed flexible cord (design H07RN-F) or
cord designation60245 IEC66 (1.5 mm2 or more). (Shall be installed
in accordance with national wiring regulations.)

CAUTION

New refrigerant air conditioner installation

EN-1 EN-2

Installation Manual

• THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT
(R410A), WHICH DOES NOT DESTROY THE OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water,
oxidizing membranes, and oils because the pressure of R410A
refrigerant is approx. 1.6 times of refrigerant R22. As well as the
adoption of this new refrigerant, refrigerating machine oil has also
been changed. Therefore, during installation work, be sure that
water, dust, former refrigerant, or refrigerating machine oil does not
enter the refrigeration cycle of a new-refrigerant air conditioner.
To avoid mixing refrigerant and refrigerating machine oil, the sizes
of charging port connecting sections on the main unit are different
from those for the conventional refrigerant, and different size tools
are also required. For connecting pipes, use new and clean piping
materials with high pressure withstand capabilities, designed for
R410A only, and ensure that water or dust does not enter.
Moreover, do not use any existing piping as its pressure withstand
may be insufficient and may contain impurities.

DANGER

• FOR INSTALLATION BY QUALIFIED PERSONS ONLY.

• MEANS FOR DISCONNECTION FROM THE SUPPLY HAVING A
CONTACT SEPERATION OF AT LEAST 3 mm IN ALL POLES
MUST BE INCORPORATED IN THE FIXED WIRING.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY
ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES
ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE
CONNECTING CABLE IS CONNECTED WRONGLY, ELECTRIC
PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR
DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF
COMBUSTIBLE GAS OR GAS VAPORS. FAILURE TO FOLLOW

THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT OVERHEATING THE INDOOR UNIT AND
CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY
(MORE THAN 2 M) FROM HEAT SOURCES SUCH AS
RADIATORS, HEATERS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN
ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT TO GET
THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER
GASEOUS BODY INTO THE REFRIGERATION CYCLE. IF AIR
OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE
GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES
ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST
OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF
THE PIPE DURING THE INSTALLATION WORK, IMMEDIATELY
LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS
IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES
GENERATION OF POISONOUS GAS.

• WHEN INSTALLING OR RE-INSTALLING THE AIR
CONDITIONER, DO NOT INJECT AIR OR OTHER SUBSTANCES
BESIDES THE DESIGNATED REFRIGERANT “R410A” INTO THE
REFRIGERATING CYCLE. IF AIR OR OTHER SUBSTANCES ARE
MIXED, AN ABNORMAL PRESSURE CAN OCCUR IN THE
REFRIGERATING CYCLE, AND THIS CAN CAUSE AN INJURY
DUE TO A PIPE RUPTURE.

WARNING

• Installation work must be requested from the supplying retail
dealership or professional vendors. Self-installation may cause water
leakage, electrical shock, or fire as a result of improper installation.

• Specified tools and pipe parts for model R410A are required, and
installation work must be done in accordance with the manual.
HFC type refrigerant R410A has 1.6 times more pressure than that

EN

EN-3 EN-4

– 2 –

– 3 –

Installation Manual

of conventional refrigerant (R22). Use the specified pipe parts, and
ensure correct installation, otherwise damage and/or injury may be
caused. At the same time, water leakage, electrical shock, and fire
may occur.

• Be sure to install the unit in a place which can sufficiently bear its
weight. If the load bearing of the unit is not enough, or installation
of the unit is improper, the unit may fall and result in injury.

• Electrical work must be performed by a qualified electrical engineer
in accordance with the code governing such installation work,
internal wiring regulations, and the manual. A dedicated circuit and
the rated voltage must be used. Insufficient power supply or
improper installation may cause electrical shock or fire.

• Use a cabtyre cable to connect wires in the indoor/outdoor units.
Midway connection, stranded wire, and single-wire connections are
not allowed. Improper connection or fixing may cause a fire.

• Wiring between the indoor unit and outdoor units must be well
shaped so that the cover can be firmly placed. Improper cover
installation may cause increased heat, fire, or electrical shock at
the terminal area.

• Be sure to use only approved accessories or the specified parts.
Failure to do so may cause the unit to fall, water leakage, fire or
electrical shock.

• After the installation work, ensure that there is no leakage of
refrigerant gas. If the refrigerant gas leaks out of the pipe into the
room and is heated by fire or something else from a fan heater,
stove or gas range, it causes generation of poisonous gas.

• Make sure the equipment is properly earthed. Do not connect the
earth wire to a gas pipe, water pipe, lightning conductor, or
telephone earth wire. Improper earth work may be the cause of
electrical shock.

• Do not install the unit where flammable gas may leak. If there is
any gas leakage or accumulation around the unit, it can cause a
fire.

• Do not select a location for installation where there may be
excessive water or humidity, such as a bathroom. Deterioration of
insulation may cause electrical shock or fire.

• Installation work must be performed following the instructions in
this installation manual. Improper installation may cause water
leakage, electrical shock or fire. Check the following items before
operating the unit.

- Be sure that the pipe connection is well placed and there are no

leaks.

- Check that the service valve is open. If the service valve is

closed, it may cause overpressure and result in compressor
damage. At the same time, if there is a leak in the connection
part, it may cause air suction and overpressure, resulting burst or
injury.

• In pump down operations, ensure to perform the following
procedures.

- Do not inject air into the refrigeration cycle.

- Be sure to close both service valves and stop the compressor

before removing the refrigerant pipe. If removing the refrigerant
pipe while the compressor is operating with the service valves
opened, it may cause to air absorbed and abnormal high
pressure inside the refrigeration cycle and resulting burst or
injury.

• Do not modify the power cable, connect the cable midway, or use a
multiple outlet extension cable. Doing so may cause contact failure,
insulation failure, or excess current, resulting in fire or electrical
shock.

• 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.

• Be sure to comply with local regulations/codes when running the
wire from the outdoor unit to the indoor unit. (Size of wire and

EN-5 EN-6

Installation Manual

wiring method etc.)

• Places where iron or other metal dust is present. If iron or other
metal dust adheres to or collects on the interior of the air
conditioner, it may spontaneously combust and start a fire.

• If you detect any damage, do not install the unit. Contact your
supplying dealer immediately.

• Do not install in a place which cannot bear the weight of the unit.
Personal injury and property damage can result if the unit falls.

• When installing the air conditioner 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. It is not dangerous refrigerant; it has not toxicity or
combustibility. However, a concentration above 0.3 kg/m³ as
criterion still causes suffocation. The volume of refrigerant charged
to the Multi System air conditioner is more than the volume
charged to a conventional individual system.

• When wiring, use the specified cables and connect the terminals
securely to prevent external forces applied to the cable from
affecting the terminals.

• Install the access port (ceiling opening) at least 2.5 m above the
floor level and attach the grille (locally procured) to the air intake
section 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.

• Follow the instructions in this installation manual to arrange the
drain pipe for proper drainage from the unit. Ensure that drained
water is discharged. Improper drainage can result in water leakage,
causing water damage to furniture.

• Tighten the flare nut with a torque wrench using the prescribed
method. Do not apply excess torque. Otherwise, the nut may crack
after a long period of usage and it may cause the leakage of
refrigerant.

• Wear gloves (heavy gloves such as cotton gloves) for installation
work. Failure to do so may cause personal injury when handling
parts with sharp edges.

• Do not touch the air intake section or the aluminum fins of the
outdoor unit. It may cause injury.

• Do not install the outdoor unit in a place which can be a nest for
small animals. Small animals could enter and contact internal
electrical parts, causing a failure or fire.

• Request the user to keep the place around the unit tidy and clean.

• Make sure to conduct a trial operation after the installation work,
and explain how to use the unit to the customer in accordance with
the manual. Ask the customer to keep the operation manual along
with the installation manual.

EN

CAUTION

• Exposure of unit to water or other moisture before installation could
result in electric shock. Do not store it in a wet basement or expose
to rain or water.

• After unpacking the unit, examine it carefully for possible damage.

• Do not install in a place that can increase the vibration of the unit.
Do not install in a place that can amplify the noise level of the unit
or where noise and discharged air might disturb neighbors.

EN-7 EN-8

– 4 –

– 5 –

Installation Manual

2 Accessory parts

Part name Q’ty Shape Usage

Installation Manual 1 This manual (Be sure to hand over to customers)

Insulating pipe 2 For insulating pipe connecting section

Washer 8 M10 × Ø34 For hanging down the unit

Hose band 1 For connecting drain pipe

Flexible hose 1 For adjustment of drain pipe centering

Heat insulator 1 For insulating drain connecting section

Signal receiving unit 1

Mounting bracket 1 For signal receiving unit

Screw 2

Screw 2

Wood Screw 2

Spacer 4 For signal receiving unit

Pattern template 1

Remote controller 1

Battery 2

Remote controller holder 1 For remote controller

95 mm x 51 mm

M4 x 25 mm

M4 x 40 mm

Ø3.8 x 16 mm

For signal receiving unit

For signal receiving unit

For signal receiving unit

For signal receiving unit

3 Selection of installation place

Avoid installing in the following places

Select a location for the indoor unit where the cool or warm air will circulate evenly.
Avoid installation in the following kinds of locations.

• Saline area (coastal area)

• Locations with acidic or alkaline atmospheres (such as areas with hot springs, factories where chemicals or
pharmaceuticals are made and places where the exhaust air from combustion appliances will be sucked into the
unit).
Doing so may cause the heat exchanger (its aluminum fins and copper pipes) and other parts to become corroded.

• Locations with atmospheres with mist of cutting oil or other types of machine oil.
Doing so may cause the heat exchanger to become corroded, mists caused by the blockage of the heat exchanger
to be generated, the plastic parts to be damaged, the heat insulators to peel off, and other such problems to result.

• Locations where vapors from food oils are formed (such as kitchens where food oils are used).
Blocked filters may cause the air conditioner’s performance to deteriorate, condensation to form, the plastic parts to
be damaged, and other such problems to result.

• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of
the air conditioner, it may spontaneously combust and start a fire.

• Locations near obstructions such as ventilation openings or lighting fixtures where the flow of the blown air will be
disrupted (a disruption of the air flow may cause the air conditioner’s performance to deteriorate or the unit to shut
down).

• Locations where an in-house power generator is used for the power supply.
The power line frequency and voltage may fluctuate, and the air conditioner may not work properly as a result.

• On truck cranes, ships or other moving conveyances.

• The air conditioner must not be used for special applications (such as for storing food, plants, precision instruments
or art works).
(The quality of the items stored may be degraded.)

• Locations where high frequencies are generated (by inverter equipment, in-house power generators, medical
equipment or communication equipment).
(Malfunctioning or control trouble in the air conditioner or noise may adversely affect the equipment’s operation.)

• Locations where there is anything under the unit installed that would be exposed to wet risk.
(If the drain has become blocked or when the humidity is over 80 %, condensation from the indoor unit will drip,
possibly causing damage to anything underneath.)

• In the case of the wireless type of system, rooms with the inverter type of fluorescent lighting or locations exposed
to direct sunlight.
(The signals from the wireless remote controller may not be sensed.)

• Locations where organic solvents are being used.

• The air conditioner cannot be used for liquefied carbonic acid cooling or in chemical plants.

• Location near doors or windows where the air conditioner may come into contact with high-temperature, high­humidity outdoor air.
(Condensation may occur as a result.)

• Locations where special sprays are used frequently.

Screw 2

Owner's Manual

CD-ROM 1 For some models only

1

Ø3.1 x 16 mm

For remote controller holder

EN-9 EN-10