AIR CONDITIONER (SPLIT TYPE)
Installation Manual
Indoor Unit
Model name:
4-way Air Discharge Cassette Type
RAV-SP180UT-UL
RAV-SP240UT-UL
RAV-SP300UT-UL
RAV-SP360UT-UL
RAV-SP420UT-UL
Installation Manual
Air conditioner (Split type)
English
1
Manuel du proprietaire
Climatiseur (Type split)
Français
37
Installation Manual
4-way Air Discharge Cassette Type
1 ACCESSORY PARTS
„Accessory parts
Part name
Q’ty
Shape
Usage
Installation Manual
2
These manual
(Be sure to hand over to customers)
Heat insulating pipe
Installation pattern
2
1
For heat insulation of pipe connecting section
For confirmation of ceiling opening and indoor unit
position
—
Installation gauge
Washer
– –
4
For positioning of ceiling position
For hanging-down unit
Eccentric washer
Hose band
4
For hanging-down unit
1
For connecting drain pipe
Heat insulator
Flexible hose
1
1
For heat insulation of drain connecting section
For adjusting center of drain pipe
Owner’s Manual
1
(Be sure to hand over to customers)
„Separate sold parts
• The Ceiling panel and remote control are sold separately. For the installation of these products, follow the
Installation Manuals supplied with them.
• The wireless type remote control is designed to be installed by attaching a wireless remote controller kit (sold
separately) to the standard panel. (The wireless remote controller kit consists of a wireless remote control and
adjust corner caps with a signal receiving unit.)
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Installation Manual
4-way Air Discharge Cassette Type
2 PRECAUTIONS FOR SAFETY
Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install, start--up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning heat exchanger. All other
operations should be performed by trained service personnel.
When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached
to the equipment.
Follow all safety codes.Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the
unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety
information. This is the safety--alert symbol
. When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING
signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.
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 ground 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 circuit breaker before attempting any electrical work.
Make sure all circuit breaker is 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.
• 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.
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Installation Manual
4-way Air Discharge Cassette Type
• 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
• 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.
• 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.
• The installation fuse must be used for the power supply line of this conditioner.
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Installation Manual
4-way Air Discharge Cassette Type
3 SELECTION 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 8’ (2.4 m) 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 (turbo 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 fan speed, 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 control is used in a room equipped with an inverter-type fluorescent light or at a place
exposed to direct sunlight, signals from the remote control may not be received correctly.
• Place near a door or window exposed to humid outside air (Dew droping may form.).
• Place where special spray is used frequently.
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Installation Manual
4-way Air Discharge Cassette Type
„Installation space
Secure the specified space in the figure for installation and servicing.
Model RAV-
SP180, SP240 Type
A in (mm)
10.7” (271) or more
13.1” (334) or more
SP300, SP360, SP420 Type
unit : in (mm)
7.9” (200)
200 (7.9)
39.4” (1000) or more
1000 (39.4) or more
Check port
Check port
450×450
17.7” x 17.7”
(17.7×17.7)
(450 x 450)
Check port
Obstacle
Obstacle
Check port
17.7” x 17.7”
450×450
(450 x 450)
(17.7×17.7)
Check port must be located on the
Check port must be located on
Fresh air inlet box side, if it is installed.
the Fresh air inlet box side,
„Selection of installation place
In case of continued operation of the indoor unit under high-humidity conditions as described below, dew may
condense and water may drop.
Especially, high-humidity atmosphere (dew point temperature : 73.4°F (23°C) or more) may generate dew inside
the ceiling.
1. Unit is installed inside the ceiling with slated roof.
2. Unit is installed at a location using inside of the ceiling as fresh air take-in path.
3. Kitchen
Advice
• Set a service check opening panel at right side of the unit (size: 17.7" × 17.7" (450 × 450mm) or more) for piping,
maintenance, and servicing.
• If installing a unit at such place, put insulating material (glass wool, etc.) additionally on all the positions of the
indoor unit which come to contact with high-humidity atmosphere.
REQUIREMENT
When the humidity inside the ceiling seems to be higher than 80%, attach a heat insulator to the side (top)
surface of the indoor unit. (Use a heat insulator that is 0.4" (10 mm) or more thick.)
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Installation Manual
4-way Air Discharge Cassette Type
„Ceiling height
Model RAV-
SP180, SP240 Type
Possible installed ceiling height
Up to 12’6” (3.8 m)
SP300, SP360, SP420 Type
Up to 15’1” (4.6 m)
When the height of the ceiling exceeds the distance of the item Standard/4-way in Table on the next page, the hot
air is difficult to reach the floor.
Therefore, it is necessary to change the setup value of the high ceiling switch or discharge direction.
▼ Height list of ceiling possible to be installed
Unit : ft (m)
Model RAV-
SP180 Type
3-way
SP240 Type
3-way
SP300, SP360, SP420 Type
High ceiling setup
Set data
No. of discharge direction 4-way
2-way
4-way
2-way
4-way
3-way
2-way
9’2”
Standard (Factory default)
(2.8)
10’6”
(3.2)
11’6”
(3.5)
9’10”
(3.0)
10’10” 11’10”
12’10”
(3.9)
13’9”
(4.2)
14’9”
(4.5)
0000
0001
0003
(3.3)
(3.6)
10’6”
11’6”
(3.5)
12’6”
(3.8)
10’10”
(3.3)
11’6”
(3.5)
12’6”
(3.8)
13’9”
(4.2)
14’5”
(4.4)
15’1”
(4.6)
High ceiling (1)
(3.2)
11’6”
12’6”
(3.8)
11’10”
(3.6)
12’6”
(3.8)
14’9”
(4.5)
15’1”
(4.6)
High ceiling (2)
(3.5)
—
—
—
REQUIREMENT
• When using the air conditioner with 2-way/3-way discharge system, a strong wind blows directly if the ceiling
height is lower than the standard.
Therefore, change the setting switch according to height of the ceiling.
• When using the high ceiling (1) or (2) with 4-way discharge system, the draft is apt to be felt due to drop of the
discharge temperature.
The lighting time of the filter sign (notification of filter cleaning) on the remote control can be changed according to
installation conditions.
When it is difficult to obtain satisfactory heating due to location place of the indoor unit or the structure of the room,
the detection temperature of heating can be raised.
Refer to "8 Applicable Controls"in this manual for the setting procedure.
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Installation Manual
4-way Air Discharge Cassette Type
„Discharge direction
As shown in the figure below, air discharge directions can be selected according to the shape of the room and the
location of the indoor unit installation.
3 directions
2 directions
• Use a Air discharge direction kit (sold separately) to change discharge directions.
Discharge directions are limited. Follow the Installation Manual supplied with the Air discharge direction kit.
Air discharge direction kit
(sold separately)
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Installation Manual
4-way Air Discharge Cassette Type
4 INSTALLATION
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 : in (mm)
Ceiling bottom surface
6.8" (172)
Refrigerant
pipe
connecting
port (Liquid) B
4.4" (112)
Ceilingbottom
surface
2.3" (58)
1.7" (42)
Ceiling
opening
dimension
Refrigerant
pipe
connecting
port (Gas) C
Hole for power
supply cable
33.1" (840) Unit external dimension
16.1" (408)
Conduit hole
(knockout)
Electric parts box
Hole for remote
control wires
1.6" (40)
Drain pipe
connecting
port
Ceiling bottom
surface
16.4" (416.5)
27.2" ± 0.8" (690 ± 20) Hanging bolt pitch
33.9" - 35.8" (860 - 910) Ceiling opening dimension
37.4" (950) Panel external dimension
7.4" (189)
Ceiling
bottom
surface
Hanging bolt 3/8" (M10)
(To be procured locally)
Knockout for
Auxiliary fresh air
flange
Z view
For Ø3.9" (100)
Ceiling bottom surface
Ceiling panel (sold separately)
Unit : in (mm)
Model RAV
A
B
C
Model RAV
A
B
C
SP180 Type
SP240 Type
SP300 Type
10.1” (256)
10.1” (256)
12.6” (319)
Ø1/4” (6.4)
Ø3/8” (9.5)
Ø3/8” (9.5)
Ø1/2” (12.7)
Ø5/8” (15.9)
Ø5/8” (15.9)
SP360 Type
SP420 Type
12.6” (319)
12.6” (319)
Ø3/8” (9.5)
Ø3/8” (9.5)
Ø5/8” (15.9)
Ø5/8” (15.9)
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Installation Manual
4-way Air Discharge Cassette Type
Treatment of ceiling
„Opening a ceiling and
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.
installation of hanging bolts
• Consider the piping/wiring after the unit is hung when
determining the location of the indoor unit installation
and orientation.
• After the location of the indoor unit installation has
been determined, open the ceiling and install
hanging bolts.
(1) Cut and remove the ceiling foundation.
• The dimensions of the ceiling opening and hanging
bolt pitches are given in the outline drawing and the
attached installation pattern.
(2) Reinforce the cut surface of ceiling foundation, and
add ceiling foundation for fixing the end of ceiling
board.
• When a ceiling already exists, lay the drain pipe,
refrigerant pipe, system interconnection wires, and
remote control wires to their connection locations
before hanging the indoor unit.
Procure hanging bolts and nuts for installing the indoor
unit (these are not supplied).
Installation of hanging bolt
Use 3/8” (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.
Hanging bolt
Nut
3/8" (M10)
3/8" (M10)
4 pieces
New concrete slab
12 pieces
Install the bolts with insert brackets or anchor bolts.
Using the installation pattern (accessory)
The installation pattern is provided inside the
packaging cap.
Rubber
Anchor bolt
(Slide type
bracket)
(Blade type
bracket)
(Pipe hanging
anchor bolt)
<For existing ceiling>
Use the installation pattern positioning a ceiling
opening and hanging bolts.
Steel flame structure
Use existing angles or install new support angles.
Hanging bolt
<For new ceiling>
Use the installation pattern to position the ceiling
opening when hanging a ceiling.
• After the hanging bolts have been installed, install
the indoor unit.
Hanging bolt Support angle
• Hook the four holes in the installation pattern to the
panel fixing screws of the indoor unit.
• When hanging a ceiling, open the ceiling along the
outside dimensions of the installation pattern.
Existing concrete slab
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.
Indoor unit
Installation of ceiling opening and hanging
bolt
Panel fixing
screw
Hanging bolt
Level
EN
Installation pattern (Accessory)
hole
Hanging bracket
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Installation Manual
4-way Air Discharge Cassette Type
• Attach a nut (3/8" (M10): not supplied) and the Ø1.3"
(34 mm) washer (supplied) to each hanging bolt.
• Insert a washer on both sides of the T groove of the
hanging bracket of the indoor unit, and hang the
indoor unit.
• Check that the four sides of the indoor unit are level
using a level vial (levelness: 0.2" (5 mm) or less).
Indoor unit
(2) 0.5” - 0.7”
(12 - 17 mm)
• Detach the installation gauge (accessory) from the
installation pattern.
(1) 0.4” - 1.4”
(10 - 35 mm)
• Using the installation gauge, check and adjust the
positional relation between the indoor unit and the
ceiling opening (1) (0.4” - 1.4” (10 - 35 mm): 4 sides)
and the hanging-up height (2) (0.5” - 0.7” (12 - 17
mm): 4 corners).
Installation gauge
Ceiling board
REQUIREMENT
(How to use the installation gauge is printed on the
gauge.)
Before installation of the indoor unit, be sure to remove
the cushion for transportation between the fan and the
bell mouth. Running the unit without removing the
cushion may damage the fan motor.
* Procure hanging bolts
and nuts locally.
Hanging bolt
3/8” (M10)
Remove the 5 screws and detach the
wire guard. Remove the cushion
placed between fan and bell mouth.
Attach back the wire guard.
Nut
3/8” (M10)
Washer (Accessory)
To prevent the bolt
from falling off (for
safety), be sure to set
it just under the
Screw
Wire guard
Eccentric washer
(Accessory)
hanging bracket as
shown in the figure.
* Install with the marking
“UP” facing up.
Nut
3/8” (M10)
Screw
Clamp
Screw
* Do not remove the
clamp fixing screw on
the indoor unit.
Cushion
Level vial (levelness: 0.2” (5 mm) or less)
Hanging bolt
Indoor unit
Hanging
bracket
(1) 0.4” - 1.4”
(10 - 35 mm)
Ceiling
board
Installation gauge
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Installation Manual
4-way Air Discharge Cassette Type
„Installation of ceiling panel
(Sold separately)
Install the ceiling panel according to Installation
Manual attached with it after piping/wiring work has
completed.
Check that installation of indoor unit and ceiling
opening part is correct, and then install it.
REQUIREMENT
• Joint the connecting sections of ceiling panel,
ceiling surface, ceiling panel and indoor unit closely.
Any gap between them will cause air leakage and
the generate condensation or water leakage.
• Remove the adjust corner caps at the four corners
of the ceiling panel, and then install the ceiling panel
onto the indoor unit.
• Make sure that the claws of the four adjust corner
caps are securely fit.
* Improper fitting of the claws may cause water
leakage.
„Installation of remote control
(Sold separately)
For installation of the wired remote control, follow the
Installation Manual attached with the remote control.
• Pull out the remote control cord together with the
refrigerant pipe or drain pipe.
Be sure to pass the remote control cord through
upper side of the refrigerant pipe and drain pipe.
• Do not leave the remote control at a place exposed
to the direct sunlight and near a stove.
„Wireless remote control
The sensor of indoor unit with wireless remote control
can receive a signal by distance within approx. 23’ (7
m). Based upon it, determine a place where the remote
control is operated and the installation place.
• Operate the remote control, confirm that the indoor
unit receives a signal surely, and then install it.
• Keep 3’3” (1 m) or more from the devices such as
television, stereo, etc.
(Disturbance of image or noise may generate.)
• To prevent a malfunction, select a place where is not
influenced by a fluorescent light or direct sunlight.
• Two or more (Up to 6 units) indoor units with wireless
type remote control can be installed in the same
room.
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Installation Manual
4-way Air Discharge Cassette Type
5 DRAIN PIPING WORK
• For length of the traversing drain pipe, restrict to
65’7” (20 m) or less.
CAUTION
In case of a long pipe, provide support brackets with
interval of 4’11” - 6’7” (1.5 - 2 m) in order to prevent
waving.
• 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.
Arched
shape
NO
GOOD
Trap
• Set the collective piping as shown in the below
figure.
„
Piping/Heat insulating material
As long as possible (3.9” (100 mm))
Require the following materials for piping and heat
insulating at site.
VP25
VP25
VP25
Hard vinyl chloride pipe VP25
Piping
VP30 or more
Downward slope
1/100 or more
(Outer dia. : Ø1.3" (32 mm))
Foam polyethylene :
Heat insulator
Thickness 0.4" (10 mm) or more
• Be sure not to apply force to the connecting part of
the drain pipe.
• 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 use/fix the attached flexible hose with the
hose band, otherwise a damage or water leak is
caused on the drain pipe connecting port.
„Flexible hose
Use the attached flexible hose to adjust center
discrepancy of the hard vinyl chloride pipe or to adjust
the angle.
• Do not use the flexible hose as stretched, or do not
deform it more extent than that in the following figure.
• Be sure to fix the soft end of the flexible hose with the
attached hose band.
• Use the flexible hose on a horizontal level.
Attached hose
band
VP25 vinyl chloride pipe
(To be local procure)
Drain pipe
connecting port
(Hard socket)
Attached flexible hose
OK
NO GOOD
Socket for VP25
(To be local procure)
Soft socket
Riser (Trap)
max
45°
Hard socket
max
45°
Adhesive inhibited :
Use the attached flexible hose and hose band for
connecting the drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and
cause water leakage.
90° Bend
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.
Align the attached hose band to
the end of hose, set the
tightening position upward, and
then tighten it.
Drain pipe
connectingport
(Transparent)
VP25 vinyl chloride
Flexible hose
(Accessory)
pipe (To be local
procure)
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.
4’11” - 6’7” (1.5 - 2 m)
Support
Socket for VP25 vinyl chloride pipe
(To be local procure)
bracket
1/100 or more
Heat insulator
downward
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Installation Manual
4-way Air Discharge Cassette Type
Pour water gradually so that water does not spread on
the motor of the drain pump.
„Connecting drain pipe
• Connect a hard socket (procured locally) to the hard
socket of the attached supplied flexible hose.
CAUTION
• Connect a drain pipe (procured locally) to the
connected hard socket.
Pour water gently so that it does not spread around
inside the indoor unit, which may cause a malfunction.
REQUIREMENT
• Connect hard vinyl chloride pipes securely using an
adhesive for vinyl chloride to avoid water leakage.
Heat
exchanger
• It takes some time until the adhesive is dried and
hardened (refer to the manual of the adhesive). Do
not apply stress to the joint with the drain pipe
during this time period.
Float switch
connector(3P)
(CN34: red)
Drain pan
„Drain up
When a down-gradient cannot be secured for the
drainpipe, drain-up piping is possible.
• The height of the drain pipe must be 33.5" (850 mm)
or less from the bottom of the ceiling.
• Take the drain pipe out of the drain pipe joint with the
indoor unit in 11.8" (300 mm) or less, and bend up
the pipe vertically.
• Immediately after the pipe is bent up vertically, lay
the pipe making a down-gradient.
• Set downward grading immediately after raising up
vertically.
Insert the hose end between the
Tool for
heat exchanger and the drain pan,
pouring
and then bend the hose downward.
water
Bottle
Water (0.4 - 0.5 gal (1500 - 2000 cc))
• After the electric work has finished, pour water
during COOL mode operation.
• 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 208/230 V power to the terminal blocks L1 and
L2.
11.8” (300 mm)
or less
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.)
Indoor unit
Underside of ceiling
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.)
„Check the draining
In the test run, check that water drain is properly
performed and water does not leak from the connecting
part of the pipes.
EN
Be sure to check draining also when installed in
heating period.
Using a pitcher or hose, pour water (0.4 - 0.5 gal (1500
- 2000 cc)) into the discharge port before installation of
the ceiling panel.
– 14 –
14-EN
Installation Manual
4-way Air Discharge Cassette Type
Single phase
208/230 V
Power
terminals
L
1
L2
CN34
(RED)
White
Red
Black
Pull out connector CN34 (Red)
from P.C. board.
Black
„Perform heat insulating
• As shown in the figure, cover the flexible hose and
hose band with the attached heat insulator up to the
bottom of the indoor unit without gap.
• Cover the drain pipe seamlessly with a heat insulator
to be procured locally so that it overlaps with the
attached heat insulator of the drain connecting
section.
Wrap the attached heat insulator seamlessly from
the surface of the indoor unit.
Heat insulator of the Heat insulator
drain connecting
section (Accessory)
(procured locally)
* Direct the slits and seams of the heat insulator
upward to avoid water leakage.
15-EN
– 15 –
Installation Manual
4-way Air Discharge Cassette Type
6 REFRIGERANT PIPING AND EVACUATING
Flaring
„Refrigerant Piping
• Cut the pipe with a pipe cutter.
1. If the outdoor units are to be mounted on a wall,
Remove burrs completely.
make sure that the supporting platform is sufficiently
Remaining burrs may cause gas leakage.
strong. The platform should be designed and
manufactured to maintain its strength over a long
• Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
period of time, and sufficient consideration should
refrigerant R22, the flare tools newly manufactured
be given to ensuring that the outdoor unit will not fall.
for R410A are recommended.
2. Use copper pipe with 0.03" (0.8 mm) or more
However, the conventional
tools can be used by adjusting
projection margin of the
copper pipe.
B
thickness. (In case pipe size is Ø5/8" (15.9 mm), with
0.04" (1.0 mm) or more.)
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.
▼ Projection margin in
flaring : B (Unit : in (mm))
Rigid (Clutch type)
REQUIREMENT
R410A tool Conventional
When the refrigerant pipe is long, provide support
brackets at intervals of 8’2” - 9’10” (2.5 - 3 m) to clamp
the refrigerant pipe. Otherwise, abnormal sound may
be generated.
Outer dia. of copper
pipe
used
tool used
R410A
R410A
0.06” - 0.08”
(1.5 - 2.0)
1/4” (6.4), 3/8” (9.5)
0 - 0.02”
(0 - 0.5)
0.08” - 0.1”
(2.0 - 2.5)
1/2” (12.7), 5/8” (15.9)
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.
▼ Flaring dia. meter size : A (Unit : in (mm))
+0
A
-0,02"(–0,4)
Outer dia. of copper
pipe
R410A
1/4” (6.4)
3/8” (9.5)
1/2” (12.7)
5/8” (15.9)
0.36” (9.1)
0.52” (13.2)
0.65” (16.6)
0.78” (19.7)
4. Check the gas leakage. (Connected points)
„Pipe size
* In case of flaring for R410A with the
conventional flare tool, pull it out approx.
0.02" (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.
A
SP240,SP300,
Model
name
SP180
type
RAV-
SP360, SP420
type
1/2"
(12.7 mm)
5/8"
(15.9 mm)
Gas side
Pipe size
1/4"
(6.4 mm)
3/8"
(9.5 mm)
Tightening connection
CAUTION
Liquid side
„Permissible Piping Length
• Do not apply excessive torque. Otherwise, the nut
may crack depending on the conditions.
and Height Difference
They vary according to the outdoor unit.
For details, refer to the Installation Manual attached to
the outdoor unit.
EN
– 16 –
16-EN
Installation Manual
4-way Air Discharge Cassette Type
Unit : ft•lbs (N•m)
REQUIREMENT
Outer dia. of copper pipe
1/4" (6.4 mm)
Tightening torque
10 - 13 (14 - 18)
24 - 31 (33 - 42)
37 - 46 (50 - 62)
46 - 57 (63 - 77)
For the tools such as charge hose, etc., use those
manufactured exclusively for R410A.
3/8" (9.5 mm)
1/2" (12.7 mm)
Refrigerant amount to be added
5/8" (15.9 mm)
For addition of the refrigerant, add refrigerant “R410A”
referring to the attached Installation Manual of outdoor
unit.
▼
Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times)
Be sure to use a scale to charge the refrigerant of
specified amount.
Flare at
indoor
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
unit side
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.
Flare at
outdoor
unit side
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.
Half union
Flare nut
Open the valve fully
Open the valve of the outdoor unit fully. A 4 mm
hexagonal wrench is required for opening the valve.
For details, refer to the Installation Manual attached to
the outdoor unit.
Internally
Externally
threaded side
threaded side
Use a wrench to secure.
Use a torque wrench to tighten.
REQUIREMENT
Gas leak check
Tightening with an excessive torque may crack the nut
depending on installation conditions.
Tighten the nut within the specified tightening torque.
Check with a leak detector or soap water whether gas
leaks or not, from the pipe connecting section or cap of
the valve.
REQUIREMENT
Piping with outdoor unit
Use a leak detector manufactured exclusively for HFC
refrigerant (R410A, R134a, etc.).
• Shape of valve differs according to the outdoor unit.
For details of installation, refer to the Installation
Manual of the outdoor unit.
Thermal insulation process
„Evacuation
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 248 °F (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.
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
• Apply the thermal insulation to the pipe connecting
section of the indoor unit securely up to the root
17-EN
– 17 –
Installation Manual
4-way Air Discharge Cassette Type
without exposure of the pipe. (The pipe exposed to
the outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling
side).
Wrap the pipe with the attached heat insulator
without any gap between the indoor unit.
Indoor unit
The seam must be faced upward
(ceiling side).
Heat insulator
of the pipe
Flare nut
Heat insulation
pipe
(Accessory)
Union
EN
– 18 –
18-EN
Installation Manual
4-way Air Discharge Cassette Type
7 ELECTRICAL CONNECTION
Remote control wiring
WARNING
• For single system, use 2 x AWG20 non polarity wire
is used for the remote control wiring.
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.
Wiring
Incomplete connection or fixation may cause a fire,
etc.
1. Connect the connecting wire to the terminal as
identified with their respective numbers on the
terminal block of indoor and outdoor unit.
(4 x AWG12)
2. Insulate the unsheathed redundant cords
(conductors) with electrical insulation tape.
Process them so that they do not touch any electrical
or metal parts.
2. Be sure to connect ground 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.
3. For inter-unit wiring, do not use a wire jointed to
another on the way.
Capacity shortage of circuit breaker or incomplete
installation may cause an electric shock or a fire.
Wire Quantity x size
1
Indoor unit - Outdoor unit *
Ground
3 x AWG12 (polar)
1 x AWG12 or thicker
2 x AWG20 (non-polar)
CAUTION
• Consult local building codes, NEC (National Electrical
Code) or CEC (Canadian Electrical Code) for special
requirements.
• This indoor unit has no power cord.
• If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
Remote control
1
* :Length of the system interconnection wires.
SP300AT2 -
SP420AT2
RAV-
SP180AT2 SP240AT2
• Be sure to install circuit breaker is not tripped by shock
waves.
If circuit breaker is not installed, an electric shock may
be caused.
Wire
length
164’1” (50
m) or less
229’8” (70
m) or less
246’1” (75 m) or
less
• Be sure to use the cord clamps attached to the
product.
CAUTION
• Do not damage or scratch the conductive core and
inner insulator of power and system interconnection
wires when peeling them.
Use the same size wire for the field power supply wire
and system interconnection wires when the outdoor unit
is RAV-SP180AT2.
• Use the power cord and system interconnection wire
of specified thickness, type, and protective devices
required.
NOTE
• Use copper supply wires.
• Use UL wires rated 600 V for the system
interconnection wires.
• Use UL wires rated 300 V for the remote control
wires.
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 208/230 V power to the terminal
blocks (A, B 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.
• Run the refrigerant piping line and control wiring line
in the same line.
• Do not turn on the circuit breaker of the indoor unit
until vacuuming of the refrigerant pipes completes.
19-EN
– 19 –
Installation Manual
4-way Air Discharge Cassette Type
„Wire connection
REQUIREMENT
• Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• The low-voltage circuit is provided for the remote control. (Do not connect the high-voltage circuit)
• Remove the cover of the electric parts box by taking off the mounting screws (2 positions) and pushing the
hooking section. (The cover of the electric parts box remains hanged to the hinge.)
• Remove the 2 screws from the wire cover.
• Attach the conduit pipe to the conduit plate with a lock nut.
• Connect the system interconnection wires and remote control wire to the terminal block of the electric parts box.
Secure the ground wire with the ground screw.
• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electric parts box.
(Do not apply tension to the connecting section of the terminal block.)
• Mount the wire cover without catching the wires. (The wire cover should be mounted before the ceiling panel.)
• Mount the cover of the electric parts box without catching the wires.
(Mount the cover after wiring on the ceiling panel.)
▼ Thermal insulation to wiring connecting port
Hinge
Screws at 2 positions
Power supply
Louver connector
(CN510: White)
Wire cover
Ground screw
Conduit
Piping
Knockout
terminal block
connection hole
Hole for remote
control wires
L1 L2
S
Lock nut
Remote
Electric parts
box cover
control
terminal block
Conduit pipe
Conduit plate
Side D
(Space: 0.33” (8.5 mm))
Side C
Cord clamp
(Space: 0.16” (4 mm))
Insert the wire to Side C.
EN
20-EN
– 20 –
Installation Manual
4-way Air Discharge Cassette Type
„Systeminterconnectionwires „Wiring on the ceiling panel
and ground wire
According to the Installation Manual of the ceiling
panel, connect the connector (20P: White) of the
1. Strip the wire ends.
ceiling panel to the connector (CN510: White) on P.C.
System interconnection wire : 0.4” (10 mm)
board of the electric parts box.
Ground wire : 0.8” (20 mm)
2. Match the wire colors with the terminal numbers on
the indoor and outdoor units’ terminal blocks and
firmly screw the wires to the corresponding
„Remote Control Wiring
terminals.
3. Secure the ground wire with the ground screw.
4. Fix the wires with a cord clamp.
• Strip off the wire approx. 0.4” (9 mm) to connect.
• For a single system, use non polarity, 2 core wire for
the remote control wiring. (2 x AWG 20)
Unit: in (mm)
Terminal block for
remote control wiring
of indoor unit
Terminal block
0.8” (20)
Remote
A
B
1.2” (30)
0.4” (10)
A
B
control
unit
L
1
L
2
S
Remote control wire
(Field procurement)
• For the details of wiring/installation of the remote
control, refer to the Installation Manual enclosed with
the remote control.
Ground wire
„Wiring diagram
CAUTION
▼ Single system
• Firmly tighten the screws of the terminal block.
Low voltage
208/230-1-60
Indoor unit
A
B
L
1
L
2
S
Keep the wire length as shown in figure below when it
is connected to the terminal block.
High voltage
L
1
L
2
S
Remote
control
Outdoor
unit
System
interconnection wire
21-EN
– 21 –
Installation Manual
4-way Air Discharge Cassette Type
8 APPLICABLE CONTROLS
„Changing applicable control
REQUIREMENT
setting
• When you use this air conditioner for the first time,
it takes approx. 5 minutes until the remote control
becomes available after power-on. This is normal.
<When power is turned on for the first time after
installation>
Basic procedure for changing settings
Change the settings while the air conditioner is not
working.
(Be sure to stop the air conditioner before making
settings.)
It takes approx. 5 minutes until the remote control
becomes available.
Approx. 5 minutes
“SETTING”
flashes
“SETTING”
goes out
Remote
control is
available
Power
on
1
3
<When power is turned on for the second (or
later) time>
It takes approx. 1 minute until the remote control
becomes available.
4
6
Approx. 1 minutes
“SETTING”
flashes
“SETTING”
goes out
Remote
control is
available
Power
on
1 5
2
Procedure 1
Push button and temp. setup
simultaneously for at least 4 seconds.
• Normal settings were made as factory default.
Change the indoor unit settings as required.
button
• Use the wired remote control to change the
settings.
After a while, the display flashes as shown in the figure.
Confirm that the CODE No. is [01].
* The settings cannot be changed using the
wireless remote control, sub remote control,
or remote-controlless system (for central
remote control only). Therefore, install the
wired remote control to change the settings.
• If the CODE No. is not [01], push
the display content, and repeat the procedure from
the beginning.
button to erase
(No operation of the remote control is accepted for a
while after
button is pushed.)
(* Display content varies with
the indoor unit model.)
Procedure 2
Each time you push
button, indoor unit
numbers in the control group change cyclically. Select
the indoor unit you want to change settings for.
The fan of the selected unit runs and the louvers start
swinging. You can confirm the indoor unit for which you
want to change settings.
EN
– 22 –
22-EN
Installation Manual
4-way Air Discharge Cassette Type
Procedure 3
Using temp. setup
„Using wireless remote control
/
buttons, specify CODE
Change the high-ceiling settings with the DIP switch on
the receiver section P.C. board.
For details, refer to the manual of the wireless remote
controller kit. The settings can also be changed with
the switch on the indoor microcomputer P.C. board.
No. [ ].
Procedure 4
Using timer time
/
buttons, select SET DATA
[
].
* However, once the setting is changed, setting to
0001 or 0003 is possible but setting to 0000 requires
a setting data change to 0000 using the wired remote
control (sold separately) with the normal switch
setting (factory default).
Procedure 5
Push button. When the display changes from
flashing to lit, the setup is completed.
• To change settings of another indoor unit, repeat
from Procedure 2.
• To change other settings of the selected indoor unit,
repeat from Procedure 3.
Use
button to clear the settings.
To make settings after
button was pushed, repeat
from Procedure 2.
Procedure 6
When settings have been completed, push
button
to determine the settings.
SW501-1
SW501-2
When
button is pushed, “SETTING” flashes and
then the display content disappears and the air
conditioner enters the normal stop mode.
MCU(IC501)
(While “SETTING” is flashing, no operation of the
remote control is accepted.)
Setup data
SW501-1
SW501-2
0000
(Factory default)
OFF
OFF
0001
0003
ON
OFF
ON
OFF
Restore the factory default
„Installing indoor unit on high
To return the DIP switch settings to the factory default,
set SW501-1 and SW501-2 to OFF, connect a
separately sold wired remote control, and then set the
data of CODE No. [5d] to “0000”.
ceiling
When an indoor unit is installed on a ceiling higher than
the standard height, make the high-ceiling setting for
fan speed adjustment.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).
• For the CODE No. in Procedure 3, specify [5d].
• Select the setting data for Procedure 4 from the
“Height list of ceiling possible to be installed” table on
page 7 in this manual.
23-EN
– 23 –
Installation Manual
4-way Air Discharge Cassette Type
„Filter sign setting
„Horizontal louver direction
According to the installation condition, the lighting time
of the filter sign (Notification of filter cleaning) can be
changed.
1. Push
and TEMP.
buttons for at least four
seconds when the air conditioner is not working.
flashes.
Indicates CODE No. “01.”
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).
• For the CODE No. in Procedure 3, specify [01].
• For the [Set data] in Procedure 4, select the setup
data of filter sign lighting time from the following
table.
2. Select an indoor unit to be set by pushing
button (left side of the button).
Indoor unit number changes each time you push the
button.
UNITNo.
UNITNo.
UNITNo.
1-1
1-2
1-3
Setup data
0000
Filter sign lighting time
Not
UNITNo.
1-4
None
150 H
display
0001
The fan of the selected unit runs and the louvers
start swinging.
3. Change the CODE No. to “45” with TEMP.
buttons.
0002
2500 H (Factory default)
5000 H
0003
0004
10000 H
4. Select louver direction setting with TIME
buttons.
„To secure better effect of
Louver
direction
Louver direction setting
heating
setting code
Smudge reducing position
(Air direction to reduce ceiling
contamination) [Factory default]
When it is difficult to obtain satisfactory heating due to
installation place of the indoor unit or structure of the
room, the detection temperature of heating can be
raised. Also use a circulator, etc. to circulate heat air
near the ceiling.
0000
0002
Cold draft position
(Air direction to control cold air fall)
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).
• For the CODE No. in Procedure 3, specify [06].
• For the set data in Procedure 4, select the setup
data of shift value of detection temperature to be set
up from the table below.
5. Push
button to check the setting.
The display state changes from flashing to lighting,
and the setting is fixed.
6. Push
* When the cold draft position is selected, ceiling
contamination is less reduced.
button to end the setting.
Setup
Detection temp shift value
data
0000
0001
No shift
+1.8 °F (+1 °C)
+3.6 °F (+2 °C)
(Factory default)
0002
0003
0004
0005
0006
+5.4 °F (+3 °C)
+7.2 °F (+4 °C)
+9.0 °F (+5 °C)
+10.8 °F (+6 °C)
EN
– 24 –
24-EN
Installation Manual
4-way Air Discharge Cassette Type
„Swing mode
03
1. Push
for at least four seconds when the air
Refrigerant
pipe
conditioner is not working.
flashes.
Indicates CODE No. “F0.”
2. Select an indoor unit to be set by pushing
(left side of the button).
Each time you push the button, unit numbers
change as follows:
04
02
UNITNo.
1-1
UNITNo.
1-2
UNITNo.
1-3
Drain
pipe
Not
display
UNITNo.
1-4
01
The fan of the selected unit runs and the louvers
start swinging.
3. Select a swing mode by pushing TIME
buttons.
4. Push
5. Push
button.
button to complete the setting.
Swing setup code
Swing setup code
0001
Swing of louvers
Standard swing
(Factory default)
0002
0003
Dual swing
Cycle swing
CAUTION
Do not set the swing setup code to “0000”.
(This setting may cause a failure of the louvers.)
• About “Dual swing”
“Dual” means that louvers 01 and 03 are directed
and swing in one direction and louvers 02 and 04 are
directed and swing in the opposite direction.
(When louvers 01 and 03 are directed downward,
louvers 02 and 04 are directed upward.)
• About “Cycle swing”
The four louvers swing independently at respective
timings.
25-EN
– 25 –
Installation Manual
4-way Air Discharge Cassette Type
„Louver lock (No swing)
„Cancel louver lock
1. Push
(right side of the button) for at least
Set the louver direction to “0000” of the louver lock
four seconds when the air conditioner is not working.
flashes.
setup procedure above.
Indicates CODE No. “F1.”
2. Select an indoor unit to be set by pushing
(left side of the button).
Each time you push the button, unit numbers
change as follows:
Setting data
The fan of the selected unit runs and the louvers
start swinging.
0000
• When the setting is canceled,
goes out.
Other operations are the same as those in
“Louver lock (No swing)”.
UNITNo.
1-1
UNITNo.
1-2
UNITNo.
1-3
UNITNo.
1-4
„Power saving mode
3. Select a louver you want to lock by pushing TEMP.
buttons.
1. Push
button for at least four seconds when
the air conditioner is not working.
flashes.
4. Select the louver direction you do not want to swing
Indicates CODE No. “C2.”
by pushing TIME
buttons.
2. Select an indoor unit to be set by pushing
(left side of the button).
Each time you push the button, unit numbers
change as follows:
(1)
(2)
(3)
Setting data
0001
0002
0003
UNITNo.
1-1
UNITNo.
1-2
UNITNo.
1-3
UNITNo.
1-4
(4)
(5)
0004
0005
The fan of the selected unit runs and the louvers
start swinging.
3. Adjust the power save setting by pushing TIME
buttons.
Each push of the button changes the power level by
1% within the range from 100% to 50%.
* The factory default is 75%.
* When (4) or (5) is selected, dew drop may occur
during cooling mode.
5. Determine the setting by pushing
button.
lights
When the setting has been determined,
up.
6. Push
button to complete the setting.
0001-0005
(Louver lock position code)
Setting of power level in
power saving mode
4. Determine the setting by pushing
button.
5. Push button to complete the setting.
EN
– 26 –
26-EN
Installation Manual
4-way Air Discharge Cassette Type
„Remote control switch
Outdoor unit data
Data name
CODE No.
monitoring function
Outdoor unit heat exchanger
temperature (TE)
60
61
62
This function is available to call the service monitor
mode from the remote control during a test run to
acquire temperatures of sensors of the remote control,
indoor unit, and outdoor unit.
Outside air temperature (TO)
Compressor discharge air temperature
(TD)
1. Push
and
buttons simultaneously for at least
Compressor intake air temperature
(TS)
63
4 seconds to call the service monitor mode.
The service monitor indicator lights up and the
header indoor unit number is displayed first. CODE
64
65
6A
—
Heatsink temperature (THS)
Operating current (x1/10)
No.
is also displayed.
2. Pushing TEMP.
buttons, select the
number of sensor, etc. (CODE No.) to be monitored.
(See the following table.)
Compressor cumulative operating
hours (x100h)
F1
3. Pushing
(left side of the button), select an
indoor unit to be monitored. The sensor
temperatures of indoor units and their outdoor unit in
the control group are displayed.
4. Push
button to return to the normal display.
2
4
1
3
Indoor unit data
CODE No.
Data name
01
02
Room temperature (remote control)
Indoor unit intake air temperature (TA)
Indoor unit heat exchanger
temperature (TCJ)
03
04
Indoor unit heat exchanger
temperature (TC)
Indoor unit fan cumulative operating
hours (x1 h)
F3
F8
Indoor unit discharge air temperature
27-EN
– 27 –
Installation Manual
4-way Air Discharge Cassette Type
Group control for system of multiple units
Procedure example 1
One remote control can control maximum 8 indoor
units as a group.
Manual address setup procedure
While the operation stops, change the setup.
(Be sure to stop the operation of the unit.)
▼ Group control in single system
Outdoor unit Outdoor unit Outdoor unit Outdoor unit
Outdoor unit
Indoor unit
7
Indoor unit
Indoor unit
Indoor unit
Indoor unit
(Max. 8 units)
3
4
5
-2,
-2,
-2
4 -1,
3
Remote
control
Finish of address setup by power-ON
5 --11,,
• For wiring procedure and wiring method of the
individual line (Identical refrigerant line) system,
follow to “Electric work”.
• Wiring between lines is performed in the following
procedure.
Connect the terminal block (A/B) of the indoor unit
connected with a remote control to the terminal
blocks (A/B) of the indoor units of other indoor units
by wiring the inter-unit wire of the remote control.
• When the circuit breaker is turned on, the automatic
address setup starts and which indicates that
address is being set up flashes on the display part.
During setup of automatic address, the remote
control operation is not accepted.
7
3
4 --33,,
5
-3,
1
2,6
Procedure 1
Push simultaneously
seconds or more. After a while, the display part flashes
as shown below. Check the displayed CODE No. is
[10].
• When the CODE No. is other than [10], push
button to erase the display and repeat procedure
from the first step.
+
+
buttons for 4
Required time up to the finish of automatic
addressing is approx. 5 minutes.
(After pushing
button, operation of the remote
NOTE
control is not accepted for approx. 1 minute.)
(For a group control, No. of the firstly displayed
indoor unit becomes the header unit.)
In some cases, it is necessary to change the address
manually after setup of the automatic address
according to the system configuration of the group
control.
• The above mentioned system configuration is a
case when complex systems in which systems of
the multiple twin unit is controlled as a group by a
remote control.
(* Display changes according to
the model No. of indoor unit.)
Procedure 2
Every pushing
button, the indoor UNIT No. in
the group control is displayed in order. Select the
indoor unit of which setup is changed.
In this time, the position of the indoor unit of which
setup is changed can be confirmed because fan and
louver of the selected indoor unit operate.
EN
– 28 –
28-EN
Installation Manual
4-way Air Discharge Cassette Type
Procedure 3
1. Using temp. setup
Procedure 5
1. Using temp. setup
No. [14].
/
buttons, specify CODE
/
buttons, specify CODE
No. [12].
(CODE No. [12]: Line address)
2. Using timer time buttons, change the line
address from [3] to [2].
3. Push button.
(CODE No. [14]: Group address)
2. Using timer time buttons, change the setup
data from [0001] to [0002].
/
/
(Setup data [Header unit: 0001] [Follower unit:
0002])
In this time, the setup finishes when the display
changes from flashing to lighting.
3. Push
button.
In this time, the setup finishes when the display
changes from flashing to lighting.
Indoor UNIT No. before setup change is displayed.
Indoor UNIT No. before setup change is displayed.
Procedure 4
1. Using temp. setup
/
buttons, specify CODE
Procedure 6
No. [13].
If there is other indoor unit to be changed, repeat
procedure 2 to 5 to change the setup.
When the above setup has finished, push
select the indoor UNIT No. before change of setup,
specify CODE No. [12], [13], [14] in order with temp.
(CODE No. [13]: Indoor address)
2. Using timer time buttons, change the indoor
address from [3] to [2].
3. Push button.
/
to
In this time, the setup finishes when the display
changes from flashing to lighting.
setup
/
buttons, and then check the changed
contents.
Indoor UNIT No. before setup change is displayed.
Address change check Before change:
[3-3-1] → After change: [2-2-2]
Pushing
button clears the contents of which setup
was changed.
(In this case, procedure from 2 is repeated.)
Indoor UNIT No. before setup change is displayed.
29-EN
– 29 –
Installation Manual
4-way Air Discharge Cassette Type
Procedure 7
Procedure 1
Push simultaneously
or more.
After a while, the display part flashes and the display
appears as shown below.
After check of the changed contents, push
button.
button, the
display disappears and the status becomes the usual
stop status. (When pushing button the operation
+
buttons for 4 seconds
(Setup is determined.) When pushing
from the remote control is not accepted for approx.
1 minute.)
In this time, the position can be checked because fan
and louver of the indoor unit operate.
* If the operation from the remote control is not
accepted even 1 minute or more passed after
• For the group control, the indoor UNIT No. is
displayed as [
] and fans and louvers of all the
pushing
button, it is considered that the address
indoor units in the group control operate.
setup is incorrect.
In this case, the automatic address must be again
set up.
Therefore repeat procedure of the setup change
from the Procedure 1.
Check the displayed CODE No. is [01].
• When the CODE No. is other than [01], push
button to erase the display and repeat procedure
from the first step.
(After pushing
button, operation of the remote
control is not accepted for approx. 1 minute.)
(* Display changes according to
the model No. of indoor unit.)
To recognize the position of the
corresponding indoor unit though the
indoor UNIT No. is known
Procedure 2
In the group control, every pushing
indoor UNIT No. in the group control is displayed in
order.
button, the
Check the position during operation stop.
(Be sure to stop operation of the set.)
In this time, the position of the indoor unit can be
confirmed because only fan and louver of the selected
indoor unit operate.
(For a group control, No. of the firstly displayed indoor
unit becomes the header unit.)
Procedure 3
After confirmation, push
button to return the mode
1
to the usual mode.
2
When pushing
the status becomes the usual stop status.
(When pushing button the operation from the
remote control is not accepted for approx. 1 minute.)
button, the display disappears and
1,3
EN
– 30 –
30-EN
Installation Manual
4-way Air Discharge Cassette Type
9 TEST RUN
„Before test run
Wired remote control
• Before turning on the circuit breaker, carry out the
following procedure.
1) Using 500V-megger, check that resistance of
1MΩ or more exists between the terminal block L1
to L2 and the ground (grounding).
2, 4
3
If resistance of less than 1MΩ is detected, do not
run the unit.
1,5
2) Check the valve of the outdoor unit being opened
fully.
Procedure 1
• To protect the compressor at activation time, leave
power-ON for 12 hours or more be for operating.
Keep
button pushed for 4 seconds or more. [TEST]
is displayed on the display part and the selection of
mode in the test mode is permitted.
„Execute a test run
Using the remote control, operate the unit as usual.
For the procedure of the operation, refer to the
attached Owner’s Manual.
A forced test run can be executed in the following
procedure even if the operation stops by thermo.-OFF.
In order to prevent a serial operation, the forced test
run is released after 60 minutes have passed and
returns to the usual operation.
Procedure 2
Push
button.
Procedure 3
Using
button, select the operation mode,
[COOL] or [HEAT].
CAUTION
• Do not run the air conditioner in a mode other than
[COOL] or [HEAT].
• The temperature controlling function does not work
during test run.
• Do not use the forced test run for cases other than the
test run because it applies an excessive load to the
devices.
• The detection of error is performed as usual.
Procedure 4
After the test run, push
button to stop a test
run.
(Display part is same as procedure 1.)
Procedure 5
Push
check button to cancel (release from) the test
run mode.
([TEST] disappears on the display and the status
returns to a normal.)
31-EN
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Installation Manual
4-way Air Discharge Cassette Type
▼ Heating test run:
Wireless remote control
ON/OFF → 86 °F (30 °C) → 84 °F (29 °C) → 86 °F (30
°C) → 84 °F (29 °C) → 86 °F (30 °C) → 84 °F (29 °C)
→ 86 °F (30 °C) → (test run) → ON/OFF
Procedure 1
Turn on the power of the air conditioner.
When power is turned on for the first time after
installation, it takes approx. 5 minutes until the remote
control becomes available. In the case of subsequent
power-on, it takes approx. 1 minute until the remote
control becomes available. Execute a test run after the
predetermined time has passed.
Always select
[HIGH] fan
speed.
3, 4,
5, 6
2,7
2
2
Procedure 2
Push “ON/OFF” button on the remote control, select
[COOL] or [HEAT] with “MODE” button, and then select
[HIGH] with “FAN” button.
Procedure 3
Cooling test run
Heating test run
Set the temperature to 64 °F Set the temperature to 86 °F
(18°C) with the temp. setup (30°C) with the temp. setup
buttons.
buttons.
Procedure 4
Cooling test run
Heating test run
After confirming a signal
receiving sound “beep”
immediately set the
After confirming a signal
receiving sound “beep”
immediately set the
temperature to 66 °F (19°C) temperature to 84 °F (29°C)
with the temp. setup buttons. with the temp. setup buttons.
Procedure 5
Cooling test run
Heating test run
After confirming a signal
receiving sound “beep”
immediately set the
After confirming a signal
receiving sound “beep”
immediately set the
temperature to 64 °F (18°C) temperature to 86 °F (30°C)
with the temp. setup buttons. with the temp. setup buttons.
Procedure 6
Repeat procedures 4 → 5 → 4 → 5.
Indicators “Operation” (green), “Timer” (green), and
“Ready” (orange) in the wireless receiver section flash
in approx. 10 seconds, and the air conditioner starts
operation. If any of these indicators does not flash,
repeat procedures 2 to 5.
Procedure 7
Upon completion of the test run, push “ON/OFF” button
to stop operation.
<Overview of test run operations using the
wireless remote control>
▼ Cooling test run:
EN
ON/OFF → 64 °F (18 °C) → 66 °F (19 °C) → 64 °F (18
°C) → 66 °F (19 °C) → 64 °F (18 °C) → 66 °F (19 °C)
→ 64 °F (18 °C) → (test run) → ON/OFF
– 32 –
32-EN
Installation Manual
4-way Air Discharge Cassette Type
10TROUBLESHOOTING
Procedure 2
Every pushing of
„Confirmation and check
button used to set
When a trouble occurred in the air conditioner, the
check code and the indoor UNIT No. appear on the
display part of the remote control.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error
history” for confirmation.
temperature, the trouble history stored in memory is
displayed in order.
The numbers in CODE No. indicate CODE No. [01]
(latest) → [04] (oldest).
REQUIREMENT
Do not push
button because all the trouble history
of the indoor unit will be deleted.
Procedure 3
After confirmation, push
button to return to the
usual display.
Check code
Indoor UNIT No. in
which an error occurred
1. Check the troubles according to the above
procedure.
2. Ask an authorized dealer or qualified service
(maintenance) professional to repair or maintain the
air conditioner.
„Confirmation of error history
When a trouble occurred on the air conditioner, the
trouble history can be confirmed with the following
procedure. (The trouble history is stored in memory up
to 4 troubles.)
The history can be confirmed from both operating
status and stop status.
2
3
1
Procedure 1
When pushing
and
buttons at the same time for
4 seconds or more, the following display appears.
If [Service check] is displayed, the mode enters in
the trouble history mode.
• [01 : Order of trouble history] is displayed in CODE
No. window.
• [Check code] is displayed in CHECK window.
• [Indoor unit address in which an error occurred] is
displayed in Unit No.
33-EN
– 33 –
Installation Manual
4-way Air Discharge Cassette Type
„Check codes and parts to be checked
Wired
Wireless remote control
remote
Sensor block display of
Air
control
Judging
device
receiving unit
Main defective parts
Parts to be checked / error description
conditioner
status
display
Operation Timer Ready
Indication
Flashing
GR
GR
OR
No header remote
control
Incorrect remote control setting --- The header remote
control has not been set (including two remote controls).
Remote
control
E01
*
Remote control
communication error
No signal can be received from the indoor unit.
System interconnection wires, indoor P.C. board, remote
control
--- No signal can be sent to the indoor unit.
Remote control
transmission error
Remote
control
E02
E03
*
Indoor unit-remote
control regular
communication error
Remote control, network adapter, indoor P.C. board ---
No data is received from the remote control or network
adapter.
Indoor
Auto-reset
Indoor unit-outdoor
unit serial
communication error
System interconnection wires, indoor P.C. board,
outdoor P.C. board --- Serial communication error
between indoor unit and outdoor unit
E04
E08
E09
Indoor
Indoor
Auto-reset
Auto-reset
*
IPDU-CDB
communication error
Duplicated indoor
addresses
Indoor address setting error --- The same address as the
self-address was detected.
Remote control address setting error --- Two remote
controls are set as header in the double-remote control
control.
Duplicated header
remote controls
Remote
control
(* The header indoor unit stops raising alarm and follower
indoor units continue to operate.)
CPU-CPU
communication error
Indoor P.C. board --- Communication error between main
MCU and motor microcomputer MCU
E10
E18
Indoor
Indoor
Auto-reset
Auto-reset
Entire stop
Header indoor unit-
indoor follower unit
regular communication
error
Indoor P.C. board --- Regular communication is not
possible between header and follower indoor units or
between twin header (main) and follower (sub) units.
IPDU communication
error
E31
F01
Outdoor
Indoor
Communication error between IPDU and CDB
Indoor unit heat
ALT exchanger sensor
(TCJ) error
Heat exchanger sensor (TCJ) , indoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger sensor Auto-reset
(TCJ) was detected.
Indoor unit heat
ALT exchanger sensor (TC) Indoor
error
Heat exchanger sensor (TC), indoor P.C. board --- Open-
circuit or short-circuit of the heat exchanger sensor (TC) Auto-reset
was detected.
F02
F04
F06
Outdoor unit discharge
ALT temp. sensor (TD)
error
Outdoor temp. sensor (TD), outdoor P.C. board --- Open-
circuit or short-circuit of the discharge temp. sensor was Entire stop
detected.
Outdoor
Outdoor temp. sensors (TE/TS), outdoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger temp. Entire stop
sensor was detected.
Outdoor unit temp.
ALT
Outdoor
Outdoor
Outdoor
sensor (TE/TS) error
F07
(F06)
TL sensor may be displaced, disconnected or short-
circuited.
ALT TL sensor error
Entire stop
Outdoor temp. sensor (TO), outdoor P.C. board --- Open-
circuit or short-circuit of the outdoor air temp. sensor was
detected.
Outdoor unit outside
ALT
Operation
continued
F08
F10
air temp. sensor error
Room temp. sensor (TA), indoor P.C. board --- Open-
circuit or short-circuit of the room temp. sensor (TA) was Auto-reset
detected.
Indoor unit room temp.
ALT
Indoor
sensor (TA) error
F12
(F06)
TS sensor may be displaced, disconnected or short-
circuited.
ALT TS sensor error
Outdoor
Entire stop
F13
(L29)
Abnormal temperature was detected by the temp. sensor
of the IGBT heat sink.
ALT Heat sink sensor error Outdoor
Temp. sensor
Entire stop
EN
F15
(F06)
ALT
Outdoor
Temp. sensor (TE/TS) may be connected incorrectly.
Indoor P.C. board --- EEPROM error
Entire stop
Auto-reset
connection error
Indoor unit, other P.C.
board error
F29
SIM
Indoor
– 34 –
34-EN
Installation Manual
4-way Air Discharge Cassette Type
F31
(L29)
Outdoor unit P.C.
board
SIM
Outdoor
Outdoor
Outdoor P.C. board ---- In the case of EEPROM error.
Entire stop
Entire stop
Entire stop
Current detect circuit, power voltage --- Minimum
frequency was reached in the current releasing control or
short-circuit current (Idc) after direct excitation was
detected
Outdoor unit
compressor
breakdown
H01
Wiring error of compressor (open phase)
Outdoor unit
compressor lock
Compressor circuit --- Compressor lock was detected.
Wiring error of compressor (open phase)
H02
H03
Outdoor
Outdoor
Outdoor
Outdoor
Indoor
Current detect circuit, outdoor unit P.C. board ---
Abnormal current was detected in AC-CT or a phase loss Entire stop
was detected.
Outdoor unit current
detect circuit error
H04
(P04)
Case thermostat
operation
Malfunction of the case thermostat
Entire stop
Current, high-pressure switch circuit, outdoor P.C. board
--- Ps pressure sensor error was detected or low-pressure Entire stop
protective operation was activated.
Outdoor unit low-
pressure system error
H06
L03
L07
Duplicated header
indoor units
Indoor address setting error --- There are two or more
Entire stop
SIM
SIM
header units in the group.
Indoor address setting error --- There is at least one
group-connected indoor unit among individual indoor
units.
Group line in individual
indoor unit
Indoor
Entire stop
Indoor group address
not set
Indoor address setting error --- Indoor address group has
not been set.
L08
L09
SIM
SIM
SIM
Indoor
Indoor
Outdoor
Entire stop
Entire stop
Entire stop
Indoor power level not
set
Indoor power level has not been set.
L10
(L29)
Outdoor unit P.C.
board
In the case of outdoor P.C. board jumper wire (for service)
setting error
Network
adapter
central
control
Address setting, central control remote control, network
adapter --- Duplication of address in central control
communication
LAN communication
error
L20
L29
SIM
SIM
Auto-reset
Entire stop
Other outdoor unit error
1) Communication error between IPDU MCU and CDB
MCU
Other outdoor unit
error
Outdoor
Entire stop
2) Abnormal temperature was detected by the heat sink
temp. sensor in IGBT.
Abnormal external
SIM input into indoor unit
(interlock)
External devices, outdoor unit P.C. board --- Abnormal
stop due to incorrect external input into CN80
L30
L31
Indoor
Entire stop
Operation
continued
(thermostat
OFF)
Power supply phase sequence, outdoor unit P.C. board -
-- Abnormal phase sequence of the 3-phase power
supply
Phase sequence error,
SIM
etc.
Outdoor
Indoor fan motor, indoor P.C. board --- Indoor AC fan
error (fan motor thermal relay activated) was detected.
P01
P03
ALT Indoor unit fan error
Indoor
Entire stop
Entire stop
Outdoor unit discharge
An error was detected in the discharge temp. releasing
control.
ALT
Outdoor
temp. error
High-pressure switch --- The IOL was activated or an
error was detected in the high-pressure releasing control Entire stop
using the TE.
Outdoor unit high-
ALT
P04
Outdoor
pressure system error
P05
(P04)
The power cable may be connected incorrectly. Check
Entire stop
ALT Open phase detected Outdoor
open phase and voltages of the power supply.
Abnormal temperature was detected by the temp. sensor
of the IGBT heat sink.
P07
P10
ALT Heat sink overheat
Outdoor
Indoor
Entire stop
Drain pipe, clogging of drainage, float switch circuit,
indoor P.C. board --- Drainage is out of order or the float Entire stop
switch was activated.
Indoor unit water
ALT
overflow detected
P15
(L29)
There may be gas leakage from the pipe or connecting
Entire stop
ALT Gas leakage detected Outdoor
part. Check for gas leakage.
4-way valve, indoor temp. sensors (TC/TCJ) --- An error
Auto-reset
P19
(L29)
Outdoor
ALT 4-way valve error
(Indoor)
was detected due to temperature drop of the indoor unit
(Auto-reset)
heat exchanger sensor when heating.
P20
(P04)
High-pressure
protective operation
ALT
Outdoor
High-pressure protection
Entire stop
35-EN
– 35 –
Installation Manual
4-way Air Discharge Cassette Type
Outdoor unit fan motor, outdoor unit P.C. board --- An
P22
ALT Outdoor unit fan error Outdoor
error (overcurrent, locking, etc.) was detected in the
outdoor unit fan drive circuit.
Entire stop
Entire stop
IGBT, outdoor unit P.C. board, inverter wiring,
compressor --- Short-circuit protection for compressor
drive circuit devices (G-Tr/IGBT) was activated.
Outdoor unit inverter
Idc activated
P26
P29
ALT
ALT
Outdoor
Outdoor
Outdoor unit position
error
Outdoor unit P.C. board, high-pressure switch ---
Compressor motor position error was detected.
Entire stop
Entire stop
Auto-reset
Another indoor unit in the group is raising an alarm.
P31
ALT Other indoor unit error Indoor
E03/L07/L03/L08 alarm check locations and error
description
Check codes in parentheses ( ) are displayed when connected to an outdoor unit other than the new SDI series.
: Lighting : Flashing : OFF : The air conditioner automatically enters the auto-address setting mode.
ALT: When two LEDs are flashing, they flash alternately. SIM: When two LEDs are flashing, they flash in synchronization.
Receiving unit display OR: Orange GR: Green
EN
36-EN
– 36 –
EH99864701
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