Toshiba RAS-M07U2DVG-E User manual

E0X7200401-00
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AIR CONDITIONER (MULTI-SPLIT TYPE)
Installation Manual
Indoor Unit
Model name:
<Concealed Duct Type>
RAS-M07U2DVG-E
RAS-M10U2DVG-E
RAS-M13U2DVG-E
RAS-M16U2DVG-E
RAS-M22U2DVG-E
RAS-M24U2DVG-E
R32 or R410A
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– 1 – Installation Manual
EN-1 EN-2
ADOPTION OF R32/R410A REFRIGERANT
This Air Conditioner has adopted a HFC (R32/R410A) which does not destroy the ozone layer.
Be sure to combine with an outdoor unit for the R32/R410A refrigerant.
Contents
1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Selection of installation place. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Drain piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Duct design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Refrigerant piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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Installation Manual
– 2 –
EN
1Precautions 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.
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.
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 mm2or more). (Shall be installed
in accordance with national wiring regulations.)
CAUTION
New refrigerant air conditioner installation
•The refrigerant used by this conditioner is the R32/R410A.
This air conditioner has adopted a refrigerant HFC (R32/R410A)
which does not destroy the ozone layer.
•As the R32/R410A refrigerant is easily affected by impurities such
as 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 or R410A 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.
•When using existing pipes, follow the installation manual enclosed
with the outdoor unit.
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.
EN-3 EN-4
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– 3 – Installation Manual
EN-5 EN-6
• 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 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 “R32” 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 R32 are required, and
installation work must be done in accordance with the manual.
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.
• Appliance and pipe-work shall be installed, operated and stored in
a room with a floor area lager than Aminm2
How to get Aminm2= (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.
For detail, refer to Installation Manual of the outdoor unit.
• 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.
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Installation Manual
– 4 –
EN
• 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
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.
EN-7 EN-8
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– 5 – Installation Manual
EN-9 EN-10
• 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.
• This appliance is intended to be used by expert or trained users in
shops, in light industry, or for commercial use by lay persons.
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.
• 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.
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Installation Manual
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EN
2Accessory 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
M4 x 25 mm For signal receiving unit
Screw 2
M4 x 40 mm For signal receiving unit
Wood Screw 2
Ø3.8 x 16 mm For signal receiving unit
Spacer 4 For signal receiving unit
Pattern template 1
95 mm x 51 mm For signal receiving unit
Remote controller 1
Battery 2
Remote controller holder 1 For remote controller
Screw 2
Ø3.1 x 16 mm For remote controller holder
Owner's Manual 1
CD-ROM 1 For some models only
3Selection 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, high-
humidity outdoor air.
(Condensation may occur as a result.)
• Locations where special sprays are used frequently.
EN-11 EN-12
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Installation Manual
– 7 –
EN-13 EN-14
Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 23 °C or higher).
1. Installation to inside of the ceiling with tiles on the roof
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
4. Installation to a kitchen
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to contact
with the high-humidity atmosphere.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
Installation space
[Reference] Condensation test
conditions Indoor side: 27 °C dry bulb temperature
24 °C wet bulb temperature
Air volume: Low air volume, operation time 4 hours
A
235 or
more
Air outlet
Refrigerant piping
5 or
more
Drain piping
210
450
Ceiling
100
100 or
more
2500 or
more
Access port (Ceiling opening)
Floor surface
Access port
A
Air outlet
Access port
450
Model type A
07,10,13 type 1,250
16 type 1,450
22,24 type 1,650
<Under air intake> <Back air intake>
Access port (Ceiling opening)
50 or more
Ceiling Air inlet
450
Air inlet
Access port (Ceiling opening)
Ceiling 450
Access port (Ceiling opening)
Ceiling 450
300 or more
Air inlet
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Installation Manual
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EN
4Installation
CAUTION
Strictly comply with the following rules to prevent damage of the
indoor units and human injury.
• Do not put a heavy article on the indoor unit or let a person get on it.
(Even units are packaged)
• Carry in the indoor unit as it is packaged if possible. If carrying in the
indoor unit unpacked by necessity, use buffering cloth or other
material not to damage the unit.
• To move the indoor unit, hold the hooking brackets (4 positions) only.
• Do not apply force to the other parts (refrigerant pipe, drain pan,
foamed parts, resin parts or other parts).
• Hanging bolt pitch of air intake chamber side is different (centre
position), make sure not to make mistake to install the setting direction.
• Carry the package by two or more persons, and do not bundle it with
plastic band at positions other than specified.
• To install vibration isolation material to hanging bolts, confirm that it
does not increase the unit vibration.
External dimensions
Hanging bolt
Model type A B C
07,10,13 type 770 700 650
16 type 970 900 850
22,24 type 1,170 1,100 1,050
Hanging bolt pitch A
80
80
100
113
90 knockout hole
(For air taking-in)
40
Electrical control box
40
22
Hanging bolt pitch 370
Unit external dimension 450
Unit external dimension B
C(Outside)
125 (Outside)
56
Unit external dimension
210
25 or less
(Only the position of
an access cover.)
Access cover
187
155
58
388
300
260
110
320
37
173
Wires
drawing-out port
Refrigerant pipe
connecting port
(Liquid side)
Drain pipe
connecting port
Refrigerant pipe
connecting port
(Gas side)
(Unit: mm)
35
Some models have no
drain guard here.
EN-15 EN-16
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– 9 – Installation Manual
EN-17 EN-18
Installation of hanging bolt
• Consider the piping / wiring after the unit is hung to
determine the location of the indoor unit installation
and orientation.
• After the location of the indoor unit installation has
been determined, install hanging bolts.
• For the dimensions of the hanging bolt pitches,
refer to the external view.
• When a ceiling already exists, lay the drain pipe,
refrigerant pipe, control wires, and remote controller
wires to their connection locations before hanging
the indoor unit.
Procure hanging bolts washer and nuts for installing
the indoor unit (these are not supplied).
Installation of hanging bolt
Use M10 hanging bolts (4 pcs, locally procured).
Matching to the existing structure, set pitch according
to size in the unit external view as shown below.
Installation of indoor unit
Treatment of ceiling
The ceiling differs according to structure of building.
For details, consult your constructor or interior finish
contractor.
In the process after the ceiling board has been
removed, it is important to reinforce ceiling foundation
(frame) and to keep horizontal level of installed ceiling
correctly in order to prevent vibration of ceiling board.
• Attach the nuts and the M10 flat washers to the
hanging bolt.
• Put washers at up and down of the hanging bracket
of the indoor unit to hang down the indoor unit.
• Check that four sides are horizontal with a level
gauge. (Horizontal degree: Within 5 mm)
REQUIREMENT
• Hang the unit in a horizontal position.
When unit is hanged to slant, it may cause overflow
of drainage.
• Install the unit within the dimension according to the
figure below.
• Use level gauge to confirm whether the unit is hang
horizontally.
Hanging bolt M10 or W3/8 4 pieces
Nut M10 or W3/8 12 pieces
Washer M10 8 pieces
New concrete slab
Install the bolts with insert brackets or anchor bolts.
Steel frame structure
Use existing angles or install new support angles.
Existing concrete slab
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.
Rubber
(Blade type
bracket)
(Slide type
bracket)
(Pipe hanging
anchor bolt)
Anchor bolt
Hanging bolt
Support angle
Hanging bolt
M10 flat washer
M10 flat washer
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Front view
Drain pump side
Incorrect
Drain pump side
Set the drain pipe connecting
port side within 5 mm lower
than opposite side.
5 or
less
Changing from under air intake to back air intake
Remove the suction board cover attached to the back, and screw it to the bottom of unit.
Side view
Incorrect
Set the air intake and air
discharge sides are within
5 mm with each other.
5 or
less
Suction board
Remove the top and bottom fan case screws,
and fasten the fan case with the suction board.
Some models have no
drain guard here.
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