Toshiba RAV-SM404SDT-E User manual

AIR CONDITIONER (SPLIT TYPE)
Indoor Unit
Model name:
Slim Duct Type
RAV-SM404SDT-E
RAV-SM454SDT-E
RAV-SM564SDT-E
Not accessible to the general public
Vente interdite au grand public
Kein öffentlicher Zugang
Non accessibile a clienti generici
No destinado al público en general
Installation Manual
Installation Manual
Air conditioner (Split type) 1
English
Manuel d’installation
Climatiseur (Type split) 39
Français
Installations-handbuch
Klimagerät (Split-typ) 77
Deutsch
Manuale di installazione
Condizionatore d’aria (Tipo split)115
Italiano
Manual de instalación
Aire acondicionado (Tipo split) 153
Español
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Slim Duct Type Installation Manual
Contents
1 ACCESSORY PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 SELECTION OF INSTALLATION PLACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 DRAIN PIPING WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 AIR DUCTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 REFRIGERANT PIPING AND EVACUATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 ELECTRICAL WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 APPLICABLE CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
11 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12 TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Thank you very much for purchasing TOSHIBA Air Conditioner.
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the indoor unit.
• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
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Slim Duct Type Installation Manual
EN
1ACCESSORY PARTS
Accessory parts
2PRECAUTIONS FOR SAFETY
• Ensure that all Local, National and International regulations are satisfied.
• Read this “PRECAUTIONS FOR SAFETY” carefully before Installation.
• The precautions described below include the important items regarding safety.
Observe them without fail.
• After the installation work, perform a trial operation (test run) to check for any problem.
Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.
• Turn off the main power supply switch (or breaker) before the unit maintenance.
• Ask the customer to keep the Installation Manual together with the Owner’s Manual.
WARNING
•Ask an authorized dealer or qualified installation professional to install (including moving)/
maintain the air conditioner.
Inappropriate installation may result in water leakage, electric shock or fire.
•Be sure to connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
•Turn off the main power supply switch or breaker before attempting any electrical work.
Make sure all power switches are off. Failure to do so may cause electric shock.
•Install the refrigerant pipe securely during the installation work before operating the air
conditioner.
If the air conditioner is operated with the valve open and without the refrigerant pipe, the compressor sucks
air and the refrigeration cycle is overpressurized, which may cause a burst or injury.
•When moving the air conditioner for the installation into another place, be very careful not to enter
any gaseous matter other than the specified refrigerant 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 pipe burst and injuries on persons.
•Perform installation work properly according to the Installation Manual.
Inappropriate installation may result in water leakage, electric shock or fire.
Part name Q’ty Shape Usage
Installation Manual 2 These manual (Be sure to hand over to customers)
Insulating pipe 2 For insulation pipe connecting section
Washer 8 M10 × Ø34 For hanging-down unit
Hose band 1 For connecting drain pipe
Flexible hose 1 For adjusting of drain pipe centering
Heat insulator 1 For insulating drain connecting section
Owner’s Manual 1 (Be sure to hand over to customers)
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Slim Duct Type Installation Manual
•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.
•Install the air conditioner securely in a location where the base can sustain the weight adequately.
•Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
•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.
•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
might generate.
•Electrical work must be performed by a qualified electrician in accordance with the Installation
Manual. Make sure the air conditioner uses an exclusive power supply.
An insufficient power supply capacity or inappropriate installation may cause fire.
•Use the specified wires for wiring connect the terminals securely fix.
To prevent external forces applied to the terminals from affecting the terminals.
•Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
•For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop
the compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor
sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury.
CAUTION
New Refrigerant Air Conditioner Installation
•THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
• The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its
pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant,
refrigerating oil has also been changed. Therefore, during installation work, be sure that water, dust, former
refrigerant, or refrigerating oil does not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of
charging port of the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust
does not enter.
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.
•The installation fuse must be used for the power supply line of this conditioner.
•Tighten the flare nut with a torque wrench in the specified manner.
Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result
in refrigerant leakage.
•Wear heavy gloves during the installation work to avoid injury.
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Slim Duct Type Installation Manual
EN
3SELECTION OF INSTALLATION PLACE
WARNING
•Install the air conditioner at enough strong place to withstand the weight of the unit.
If the strength is not enough, the unit may fall down resulting in injury.
•Install the air conditioner at a height 2.5m or more from the floor.
If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous
because you may contact with revolving fan or active electricity.
CAUTION
•Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas.
If a combustible gas leaks and stays around the unit, a fire may occur.
Upon approval of the customer, install the air conditioner in a place that satisfies the
following conditions.
• Place where the unit can be installed horizontally.
• Place where a sufficient servicing space can be ensured for safety maintenance and check.
• Place where drained water will not cause any problem.
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of
sulfide gas (hot spring).
(Should the unit be used in these places, special protective measures are needed.)
• A restaurant kitchen where a lot of oil is used or place near machines in a factory (Oil adhering to the
heat exchanger and resin part (fan) in the indoor unit may reduce the performance, generate mist or
dew drop, or deform or damage resin parts.)
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
• Place where the discharged air blows directly into the window of the neighbor house. (Outdoor unit)
• Place where noise of the outdoor unit is easily transmitted.
(When install the outdoor unit on the boundary with the neighbor, pay due attention to the level of
noise.)
• Place with poor ventilation. (Before air ducting work, check whether value of air volume, static pressure
and duct resistance are correct.)
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or
art objects, or where breeding animals or growing plants are kept. (This may degrade the quality of
preserved materials.)
• Place where any of high-frequency appliances (including inverter devices, private power generators,
medical equipment, and communication equipment) and inverter-type fluorescent light is installed.
(A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/
equipment may occur.)
• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light
or at a place exposed to direct sunlight, signals from the remote controller may not be received
correctly.
• Place where organic solvent is used.
• Place where special spray is used frequently.
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Slim Duct Type Installation Manual
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
• 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. In this case, arrange the side plate (Check port)
so that it is easily removed.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
Installation space (Unit:mm)
Reserve space required for maintenance the indoor unit and service work.
[Reference] Dewing test conditions
Indoor side: 27°C dry bulb temperature
24°C wet bulb temperature
Air volume: Low air volume, operation time 4 hours
210
210
210
100 or more
Floor surface
Air outlet
250
or more
2500 or more
235 or more
5 or more
<Under air Inlet> <Back air Inlet>
5 or more 5 or more
Ceiling 50 or more
235
or more
235
or more
300 or more
Floor surface
2500 or more
Ceiling
Air outlet
Air outlet
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Slim Duct Type Installation Manual
EN
Service space (Unit:mm)
Arranging the to back air inlet type
50
50
945 645
645
745
645
945
745
945
Ceiling
Service door (Ceiling opening)
Air outlet
Service door (Ceiling opening)
Air filter
Air filter
Air filter
<Back air inlet>
Remove the cover plate
and then fix it to the
bottom surface.
Do surely hooking
to the main unit.
Main unit Air filter
Main unit
(after remover)
Remove the filter from the main unit while
pushing down on the tabs.
Force
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Slim Duct Type Installation Manual
Notification of filter cleaning term setup
The lighting term setup of the filter sign (Notification of filter cleaning) of the remote controller can be
changed according to the condition of installation.
For setup method, refer to “Change of lighting term of filter sign” and “To secure better effect of heating”
in the Applicable controls of this Manual.
In case of wireless type
The sensor of indoor unit with wireless remote controller
can receive a signal 8m or less.
Based upon it, determine a place where the remote
controller is operated and the installation place of the
indoor unit.
• To prevent a malfunction, select a place where is not
influenced by a florescent light or direct sunlight.
• Two or more (Up to 6 units) indoor units with wireless
remote controller can be installed in the same room.
8morless
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Slim Duct Type Installation Manual
EN
4INSTALLATION
WARNING
• Install the air conditioner certainly to sufficiently withstand the weight.
• If the strength is insufficient, the unit may fall down resulting in human injury.
• Perform a specified installation work to guard against strong wind or earthquake.
• An incomplete installation can cause accidents by the units falling and dropping.
REQUIREMENT
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. (Even units are packaged)
• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by
necessity, be sure to use buffering cloth, etc. to not damage the unit.
• To move the indoor unit, hold the hooking metals (4 positions) only.
Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, or resin parts, etc.).
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other
than specified.
External view (Unit:mm)
511 67
67
910
372
359
422
502
103
31
163
33
40
21 803
57
210
845
168
21 21
21
120
805
19
645
168 20
80
59
80
4-Ø4
Ø92
(inside)
Air filter Refrigerant piping
Fresh air inlet
(knock-out hole)
(inside)
Drain-up port
Hung-up plate
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Slim Duct Type Installation Manual
Opening hole on ceiling
and placing of hanging bolt
• Considering the indoor unit and the hanged-up
piping/wiring work, determine the installation
position and direction.
• After installation position of the indoor unit has
been determined, open a hole on the wiring and
place the hanging bolt.
• For opening size of the ceiling and the hanging
bolt pitch, see the external view.
• When the ceiling has already boarded, draw the
drain pipe, refrigerant pipe, inter-unit wire
between indoor and outdoor units, central
control system wire, and remote controller wire
up to the position where pipes and wires are
connected before hanged-up the indoor unit.
The hanging bolts and nuts will be procured
locally.
Installation of hanging bolt
Use M10 hanging bolts (4 pcs, to be local
procure).
Matching to the existing structure, set pitch
according to size in the unit external view as
shown below.
Installation of indoor unit
• Attach the nuts (M10 or W3/8: Procured locally)
and the attached washers (Ø34) to the hanging
bolt.
• Put washers at up and down of T-groove of the
hanging bracket of the indoor unit to hang down
the indoor unit.
• Using a level vial, check that four sides are
horizontal. (Horizontal degree: Within 5mm)
Hanging bolt M10 or W3/8 4 pieces
Nut M10 or W3/8 12 pieces
New concrete slab
Install the bolts with insert brackets or anchor bolts.
Steel flame 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
Anchor bolt
(Blade type
bracket)
(Slide type
bracket) (Pipe hanging
anchor bolt)
Hanging bolt
Hanging bolt Support angle
Nut
(W3/8 or M10)
(1)
M10 flat washer
(Accessory)
(2)
M10 flat washer
(Accessory)
(1) Required those other than M10 flat washer at site.
(2) To prevent falling-off of bolt (safety), be sure to set it just
under the hanging bracket as shown in the figure.
(910mm × 511mm)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
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Slim Duct Type Installation Manual
EN
5DRAIN PIPING WORK
CAUTION
•Following the Installation Manual, perform
the drain piping work so that water is
properly drained, and apply a heat insulation
so as not to cause a dew droping.
Inappropriate piping work may result in water
leakage in the room and wet of furniture.
 Pipe material/Insulator and size
The following materials for piping work and
insulating process are procured locally.
 Connection of flexible hose
• Insert the soft socket of the attached flexible
hose into the connecting port of the drain pipe
until it strikes against the end.
• Align the attached hose band to the end of the
pipe connecting port, and then tighten it surely.
REQUIREMENT
• Be sure to fix the soft socket with the attached
hose band and set the tightening position at
upper side.
• Use the attached flexible hose by bending it
with 45° or less so that no breakage or
clogging occurs.
REQUIREMENT
• Be sure to perform heat insulation of the drain
pipes of the indoor unit.
• Never forget to perform heat insulation of the
connecting part with the indoor unit.
An incomplete heat insulation causes dew droping.
• Set the drain pipe with downward slope (1/100
or more), and do not make swelling or trap on
the piping. It may cause an abnormal sound.
• For length of the traversing drain pipe, restrict
to 20m or less.
In case of a long pipe, provide support
brackets with interval of 1.5 to 2m in order to
prevent waving.
• Set the collective piping as shown in the below
figure.
• The hard vinyl-chloride pipe cannot be directly
connected to the drain pipe connecting port of
the indoor unit.
For connection with the drain pipe connecting
port, be sure to fix the attached flexible hose.
• Adhesive agent cannot be used for the pipe
connecting port (hard socket) of the indoor
unit.
Be sure to use the attached hose band for
fixing, otherwise damage or water leakage of
the drain pipe connecting port is caused.
Pipe material
Hard vinyl chloride pipe socket for
VP25
Hard vinyl chloride pipe VP25
(Nominal outer diameter Ø32mm)
Insulator Foamed polyethylene foam,
thickness: 10mm or more
Top view NO GOOD
max
45°
max
45°
Side view
Side view
Riser (Trap)
90° Bend
Air outlet
Air outlet
Side view
Air outlet
OK
Support
bracket
1/100 or more
downward
Heat insulator
1.5m to 2m
Arched
shape
Trap
NO
GOOD
VP25
As long as possible (100mm or more)
Downward slope
1/100 or more
VP30 or more
VP25 VP25
Drain pipe connecting port
(Hard socket)
Align the attached hose band to the
end of hose, set the tightening
position upward, and then tighten it.
Ø25 vinyl chloride pipe
(Local supply)
Socket for VP25
(Local supply)
Hard socket
Indoor unit
Soft socket
Adhesive agent prohibited
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Slim Duct Type Installation Manual
Connection of drain pipe
• Connect the hard socket (local supply) to the
hard socket side of the attached flexible hose
which has been installed.
• Connect the drain pipes (local supply)
successively to the connected the hard socket.
REQUIREMENT
• Using adhesive agent for vinyl chloride,
connect the hard vinyl chloride pipes certainly
so that water does not leak.
• It requires several times to dry and harden the
adhesive agent.
(Refer to Guide Manual of the adhesive agent.)
In this time, be sure not to apply force to the
connecting section with the drain pipes.
Drain up
When a downward grading cannot be secured on
the drain pipe, a drain-up work is possible.
• Set the height of the drain pipe within 850mm
from the bottom surface of the indoor unit.
• Draw out the drain pipe within 300mm from the
end of the drain pipe connecting port of the
indoor unit, and then raise it vertically.
• After the drain pipe has been raised, set a
grading so that it is immediately bent
downward.
Check the draining
After drain piping work, check that water drain is
properly performed and water does not leak from
the connecting part of the pipes. In this time,
check also there is no abnormal sound of the
motor of the drain pump. Be sure to check draining
when installed in the heating period.
When the electric work has finished:
• Pour water as shown in the following figure,
check water is drained from the drain pipe
connecting port in COOL mode, and then check
there is no water leak from the drain pipes.
CAUTION
Pour water slowly.
If it is poured urgently, water is spread inside of
the indoor unit resulted in a trouble.
• If the electric work has not yet finished, pull out
the float switch connector (CN34 : Red) from the
electric parts box, and check draining by
plugging the single phase 220–240V power to
the terminal blocks ➀ and ➁.
If doing so, the drain pump motor operates.
• Test water drain while checking the operation
sound of the drain pump motor.
(If the operation sound changes from
continuous sound to intermittent sound, water is
normally drained.)
Rising up 687mm or less
Underneath of ceiling
Indoor unit
300mm
or less
Rising up 850mm or less
Cover
plate
Insert the edge of hose
into the drain pan and
bend it downward.
Water
(1500cc~2000cc)
Pump
Vessel
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Slim Duct Type Installation Manual
EN
• After the check, the drain pump motor runs,
connecting the float switch connector.
(In case of check by pulling out the float switch
connector, be sure to return the connector to the
original position.)
Heat insulating process
• After drain check, using the attached heat
insulator for drain connecting section, wrap the
flexible hose without clearance from the end of
the drain pipe connecting port of the indoor unit.
• Covering the attached heat insulator for drain
connecting section, wrap the drain pipe with
heat insulator (local supply) without clearance.
1 2
Pull out connector CN34 (Red)
from P.C. board.
CN34
(RED)
Black
Black
Red
White
Single phase
220–240V
Power
terminals
Attached heat insulator Heat insulator to be
procured locally
Hard vinyl chloride pipe
Flexible hose Hose band
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Slim Duct Type Installation Manual
6AIR DUCTING
Arrangement
Referring to the following dimensions, manufacture duct at the local site.
Be sure to mount an air filter to the air inlet side; otherwise decrease of capacity and etc. may be caused.
825
286.8 8.2
45.3 41.5100100
100100
12.5
100
12.5
100 100
266
100100100
805
825
100
12.5
100100
12.5
44.3 100 44.3
188
100100
805
100 100 100
170
or less
<Under air inlet> <Back air inlet>
<Under air inlet> <Back air inlet>
Air filter Main unit
Force
Remove the filter from the
main unit while pushing
down on the tabs.
Remove the cover plate and
then fix it to the bottom surface.
CAUTION
Take out this cover plate.
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EN
Connecting method of the duct
CAUTION
Incomplete heat insulation of the supply air flange and sealing may occur dewing resulted in falling of
water drop.
Static presure characteristics
RAV-SM404SDT-E/454SDT-E RAV-SM564SDT-E
Aluminum tape
(Local supply)
Heat insulator with sticking material (100mm-width Local supply)
Aluminum tape (Local supply)
Duct:Insulation material
(Local supply)
Heat insulator with sticking material (100mm-width Local supply)
Cover a screw Under surface
Aluminum tape (Local supply)
Aluminum tape (Local supply)
Flange (Local supply)
Connect a duct to the
inside of the flange
Flange
Air outlet side Indoor unit Air inlet side
400
0
10
20
30
40
50
60
500 600 700 800
External static pressure (Pa)
Air volume (m³/h)
Upper limit of external
static pressure (50Pa)
Upper limit of
external static
pressure (35Pa)
Upper limit of
external static
pressure
(20Pa)
Upper limit of
external static
pressure (10Pa)
Low (10Pa)
Low (20Pa)
Low (35Pa)
Low (50Pa)
High
(35Pa) Lower limit of
external static
pressure (50Pa)
Lower limit of
external static
pressure (35Pa)
High (50Pa)
High
(20Pa)
High
(10Pa)
Standard filter
pressure loss
Standard air volume : 690 m³/h
Lower limit of
external static
pressure (20Pa)
400
0
10
20
30
40
50
60
500 600 700 900800
External static pressure (Pa)
Air volume (m³/h)
Upper limit of external
static pressure (50Pa)
Upper limit of
external static
pressure (35Pa)
Upper limit of
external static
pressure (20Pa)
Upper limit of
external static
pressure (10Pa)
Low (10Pa)
Low (20Pa)
Low (35Pa)
Low (50Pa)
High
(35Pa)
Lower limit of
external static
pressure (50Pa)
Lower limit of
external static
pressure (35Pa)
High (50Pa)
High
(20Pa)
High
(10Pa)
Standard filter
pressure loss
Standard air volume : 780 m³/h
Lower limit of
external static
pressure (20Pa)
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Slim Duct Type Installation Manual
Concealed duct type
Ledge ceiling concealed duct type
Channel
Supply chamber
Supply grille
Supplying
Supplying
200mm (diam.)
round duct
Indoor unit
Return air grille
Returning
Supplying
Supply grille
Supplying
Supply
chamber
200mm (diam.)
round duct
Returning
Return air grille
Indoor unit
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Slim Duct Type Installation Manual
EN
7REFRIGERANT PIPING AND EVACUATING
Refrigerant Piping
1. If the outdoor units are to be mounted on a wall,
make sure that the supporting platform is
sufficiently strong. The platform should be
designed and manufactured to maintain its
strength over a long period of time, and
sufficient consideration should be given to
ensuring that the outdoor unit will not fall.
2. Use copper pipe with 0.8 mm or more thickness.
3. Flare nut and flare works are also different from
those of the conventional refrigerant.
Take out the flare nut attached to the main unit
of the air conditioner, and use it.
REQUIREMENT
When the refrigerant pipe is long, provide support
brackets at intervals of 2.5 to 3m to clamp the
refrigerant pipe. Otherwise, abnormal sound may
be generated.
CAUTION
IMPORTANT 4 POINTS FOR PIPING WORK
1. Remove dust and moisture from the inside of the
connecting pipes.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using
VACUUM PUMP.
4. Check the gas leakage. (Connected points)
Pipe size
Permissible Piping Length
and Height Difference
They vary according to the outdoor unit.
For details, refer to the Installation Manual
attached to the outdoor unit.
Flaring
• Cut the pipe with a pipe cutter.
Remove burrs completely.
Remaining burrs may cause gas leakage.
• Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those
of refrigerant R22, the flare tools newly
manufactured for R410A are recommended.
However, the
conventional tools can be
used by adjusting
projection margin of the
copper pipe.
▼Projection margin in flaring : B (Unit : mm)
Rigid (Clutch type)
▼Flaring diam. meter size : A (Unit : mm)
* In case of flaring for R410A with the
conventional flare tool, pull it out
approx.
0.5 mm more than that for R22 to
adjust to the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
Model
name RAV- SM404, 454, 564 type
Pipe size Gas side 12.7 mm
Liquid side 6.4 mm
Outer diam. of
copper pipe
R410A tool
used Conventional tool used
R410A R410A
6.4 0 to 0.5 1.5 to 2.0
12.7 2.0 to 2.5
Outer diam. of copper
pipe
A
R410A
6.4 9.1
12.7 16.6
B
+0
–0.4
A
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Slim Duct Type Installation Manual
Tightening connection
CAUTION
• Do not apply excessive torque. Otherwise, the
nut may crack depending on the conditions.
▼ Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times)
Therefore, using a
torque wrench, tighten
the flare pipe connecting
sections which connect
the indoor and outdoor
units of the specified
tightening torque.
Incorrect connections
may cause not only a
gas leak, but also a
trouble of the refrigeration cycle.
Align the centers of the connecting pipes and
tighten the flare nut as far as possible with your
fingers. Then tighten the nut with a spanner and
torque wrench as shown in the figure.
REQUIREMENT
Tightening with an excessive torque may crack
the nut depending on installation conditions.
Tighten the nut within the specified tightening
torque.
Piping with outdoor unit
• Shape of valve differs according to the outdoor
unit.
For details of installation, refer to the Installation
Manual of the outdoor unit.
Air purge
Using a vacuum pump, perform vacuuming from
the charge port of valve of the outdoor unit.
For details, follow to the Installation Manual
attached to the outdoor unit.
• Never use the refrigerant sealed in the outdoor
unit for air purge.
REQUIREMENT
For the tools such as charge hose, etc., use those
manufactured exclusively for R410A.
Refrigerant amount to be added
For addition of the refrigerant, add refrigerant
“R410A” referring to the attached Installation
Manual of outdoor unit.
Be sure to use a scale to charge the refrigerant of
specified amount.
REQUIREMENT
• Charging an excessive or too little amount of
refrigerant causes a trouble of the compressor.
Be sure to charge the refrigerant of specified
amount.
• A personnel who charged the refrigerant
should write down the pipe length and the
added refrigerant amount in the nameplate
attached to the service panel of the outdoor
unit. It is necessary to troubleshoot the
compressor and refrigeration cycle
malfunction.
Open the valve fully
Open the valve of the outdoor unit fully. A 4mm-
hexagonal wrench is required for opening the
valve.
For details, refer to the Installation Manual
attached to the outdoor unit.
Gas leak check
Check with a leak detector or soap water whether
gas leaks or not, from the pipe connecting section
or cap of the valve.
REQUIREMENT
Use a leak detector manufactured exclusively for
HFC refrigerant (R410A, R134a, etc.).
(Unit : N•m)
Outer diam. of copper
pipe Tightening torque
6.4 mm (diam.) 14 to 18 (1.4 to 1.8 kgf•m)
12.7 mm (diam.) 50 to 62 (5.0 to 6.2 kgf•m)
Flare at
indoor
unit side
Flare at
outdoor
unit side
Externally
threaded side
Half union Flare nut
Internally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
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Slim Duct Type Installation Manual
EN
Thermal insulation process
Apply thermal insulation for the pipes separately
at liquid side and gas side.
For the thermal insulation to the pipes at gas side,
be sure to use the material with heat-resisting
temperature 120°C or higher.
Using the attached thermal insulation material,
apply the thermal insulation to the pipe connecting
section of the indoor unit securely without gap.
REQUIREMENT
• Apply the thermal insulation to the pipe
connecting section of the indoor unit securely
up to the root without exposure of the pipe.
(The pipe exposed to the outside causes water
leak.)
• Wrap heat insulator with its slits facing up
(ceiling side).
Indoor unit
Union
Heat insulation pipe
(Accessory) Flare nut
Heat
insulator of
the pipe
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Slim Duct Type Installation Manual
8ELECTRICAL WORK
WARNING
1. Using the specified wires, ensure to connect
the wires, and fix wires securely so that the
external tension to the wires do not affect the
connecting part of the terminals.
Incomplete connection or fixation may cause a
fire, etc.
2. Be sure to connect earth wire. (grounding
work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for
telephone wires.
3. Appliance shall be installed in accordance
with national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
CAUTION
• This indoor unit has no power cord.
• If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
• Be sure to install an earth leakage breaker that is
not tripped by shock waves.
If an earth leakage breaker is not installed, an
electric shock may be caused.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core
and inner insulator of power and inter-connecting
wires when peeling them.
• Use the power cord and Inter-connecting wire of
specified thickness, type, and protective devices
required.
REQUIREMENT
• For power supply wiring, strictly conform to the
Local Regulation in each country.
• For wiring of power supply of the outdoor units,
follow the Installation Manual of each outdoor
unit.
• Never connect 220–240V power to the
terminal blocks ( , , etc.) for control wiring.
(Otherwise, the system will fail.)
• Perform the electric wiring so that it does not
come to contact with the high-temperature part
of the pipe.
The coating may melt resulting in an accident.
• After connecting wires to the terminal blocks,
provide a trap and fix wires with the cord
clamp.
• Run the refrigerant piping line and control
wiring line in the same line.
• Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes completes.
Remote controller wiring
2-core non polarity wire is used for the remote
controller wiring.
How to wire
1. Connect the connecting wire to the terminal as
identified with their respective numbers on the
terminal block of indoor and outdoor unit.
H07 RN-F or 60245 IEC 66 (1.5 mm2or more)
2. Insulate the unsheathed redundant cords
(conductors) with electrical insulation tape.
Process them so that they do not touch any
electrical or metal parts.
A B
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