Fujitsu AUUA7TLAV Installation Manual

Fujitsu AUUA7TLAV Installation Manual
For authorized service personnel only.
MANUEL D’INSTALLATION
UNITÉ INTÉRIEURE (type cassette)
Pour le personnel agréé uniquement.
MANUAL DE INSTALACIÓN
UNIDAD INTERIOR (Tipo casete)
AUUA4TLAV1
AUUA7TLAV
AUUA9TLAV
AUUA12TLAV
AUUA14TLAV
AUUA18TLAV
AUUA24TLAV
Únicamente para personal de servicio autorizado.
Français
INDOOR UNIT (Cassette type)
Español
INSTALLATION MANUAL
English
TM
PART No. 9371022581-02
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INSTALLATION MANUAL
1.2. SPECIAL PRECAUTIONS
PART No. 9371022581-02
VRF system indoor unit (Cassette type)
When Wiring
Contents
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
1.
SAFETY PRECAUTIONS ......................................................................................... 1
1.1. IMPORTANT! Please read before starting ........................................................ 1
1.2. SPECIAL PRECAUTIONS ................................................................................ 1
2.
ABOUT THIS PRODUCT.......................................................................................... 2
2.1. Precautions for using the R410A refrigerant ..................................................... 2
2.2. Special tool for R410A ...................................................................................... 2
2.3. Accessories ...................................................................................................... 2
2.4. Optional parts ................................................................................................... 2
2.5. About unit of the length ..................................................................................... 2
3.
INSTALLATION WORK ............................................................................................ 3
3.1. Selecting an installation location....................................................................... 3
3.2. Installation dimensions ..................................................................................... 3
3.3. Discharge direction setting ............................................................................... 3
3.4. Installing the unit ............................................................................................... 3
4.
PIPE INSTALLATION ............................................................................................... 4
4.1. Selecting the pipe material ............................................................................... 4
4.2. Pipe requirement .............................................................................................. 4
4.3. Flare connection (pipe connection)................................................................... 4
4.4. Installing heat insulation ................................................................................... 5
5.
INSTALLING DRAIN PIPES ..................................................................................... 5
6.
ELECTRICAL WIRING ............................................................................................. 6
6.1. Electrical requirement ....................................................................................... 6
6.2. Wiring method................................................................................................... 7
6.3. Unit wiring ......................................................................................................... 7
6.4. Connection of wiring ......................................................................................... 8
6.5. Optional parts wiring ......................................................................................... 9
6.6. External input and external output (Optional parts) .......................................... 9
7.
FIELD SETTING ..................................................................................................... 11
7.1. Setting the address ......................................................................................... 11
7.2. Custom code setting ....................................................................................... 11
7.3. Function setting .............................................................................................. 12
8.
CASSETTE GRILLE INSTALLATION ..................................................................... 13
8.1. Remove the intake grille ................................................................................. 13
8.2. Install cassette grille to indoor unit.................................................................. 13
8.3. Attach the intake grille .................................................................................... 14
9.
TEST RUN .............................................................................................................. 14
9.1. Test run using Outdoor unit (PCB) .................................................................. 14
9.2. Test run using Outdoor unit (PCB) .................................................................. 14
10. CHECK LIST........................................................................................................... 14
11. ERROR CODES ..................................................................................................... 14
1.1. IMPORTANT! Please read before starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in this manual.
This symbol refers to a hazard or unsafe practice which can result in
severe personal injury or death.
This symbol refers to a hazard or unsafe practice which can result in
CAUTION:
personal injury and the potential for product or property damage.
• Hazard alerting symbols
: Electrical
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary
to construct a strong wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating” that can cause
dripping and water damage to walls and floors.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before
connecting them, then tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before opening the refrigerant valves.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening the unit to check or
repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operating manual.
DANGER
Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 5 minutes or
more before touching electrical components.
• Be sure to read this Manual thoroughly before installation.
• The warnings and precautions indicated in this Manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this Manual, together with the Operating Manual to the customer.
• Request the customer to keep them on hand for future use, such as for relocating or
repairing the unit.
1. SAFETY PRECAUTIONS
WARNING:
• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate
earthing (grounding) can cause accidental injury or death.
• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible fire hazard.
: Safety/alert
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certified
dealer for additional instructions.
WARNING
Request your dealer or a professional installer to install the unit in accordance with this
Manual.
An improperly installed unit can cause serious accidents such as water leakage, electric
shock, or fire.
If the unit is instruction in disregard of the instructions in the Installation Manual, it will
void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed.
Turning ON the power before the work is completed can cause serious accidents such
as electric shock or fire.
If refrigerant leaks while work is being carried out, ventilate the area.
If the refrigerant comes in contact with a flame, it produces a toxic gas.
Installation must be performed in accordance with the requirement of NEC (National
Electrical Code) and CEC (Canadian Electrical Code) by authorized personnel only.
Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units
during operation. It will cause compressor failure as well as water leakage. First, stop
the indoor unit by operating the control unit, converter or external input device and then
cut the breaker.
Make sure to operate through the control unit, converter or external input device.
When the breaker is designed, locate it at a place where the users cannot start and stop
in the daily work.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.
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2. ABOUT THIS PRODUCT
Name and Shape
2.1. Precautions for using the R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle.
If air enters the refrigeration cycle, the pressure in the refrigeration cycle will become
abnormally high and cause the piping to rupture.
If there is a refrigerant leakage, make sure that it does not exceed the concentration
limit.
If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leakage occurs during operation, immediately vacate the premises and
thoroughly ventilate the area.
If the refrigerant comes in contact with a flame, it produces a toxic gas.
Q’ty
Application
For indoor side pipe joint (Large)
Coupler heat
insulation
(Large)
1
Special nut A (Large
flange)
For installing indoor unit
4
Special nut B
(Small flange)
For installing indoor unit
4
Template
(Carton top)
1
Drain hose
1
For ceiling openings cutting
Also used as packing
For installing drain pipe
(Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.])
2.2. Special tool for R410A
For installing drain hose
Hose band
WARNING
To install a unit that uses the R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifically for R410A use.
Because the pressure of the R410A refrigerant is approximately 1.6 times higher than
the R22, failure to use dedicated piping material or improper installation can cause
rupture or injury.
Furthermore, it can cause serious accidents such as water leakage, electric shock, or
fire.
Tool name
Gauge manifold
1
Drain hose
insulation
For installing drain hose
1
Contents of change
Pressure is huge and cannot be measured with a conventional (R22)
gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed.
It is recommended to use a gauge manifold with a high pressure display range 30 in Hg to 768 psi (–0.1 to 5.3 MPa) and a low pressure
display range 30 in Hg to 551 psi (–0.1 to 3.8 MPa).
Cassette grille accessories
Name and Shape
Q’ty
Connector cover
1
Charging hose
To increase pressure resistance, the hose material and base size
were changed.
Vacuum pump
A conventional (R22) vacuum pump can be used by installing a
vacuum pump adapter.
Be sure that the pump oil does not backflow into the system. Use
one capable for vacuum suction of 5 Torr, –755 mm Hg (–100.7 kPa).
Tapping screw
(M5 × 12mm)
4
Special gas leakage detector for HFC refrigerant R410A.
Tapping screw
(M4 × 12mm)
1
Gas leakage
detector
2.3. Accessories
For mounting cassette grille
For mounting connector cover
2.4. Optional parts
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts.
The use of non-prescribed parts can cause serious accidents such as the unit to fall,
water leakage, electric shock, or fire.
Description
The following installation parts are furnished. Use them as required.
Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
External connect kit
Do not discard any accessories needed for installation until the installation work has been
completed.
Name and Shape
Q’ty
Application
Model
Insulation kit for high
humidity
1
(This book)
Installation manual
For output function
(Output terminal / CNB01)
UTY-XWZXZB
For control input function
(Apply voltage terminal / CNA01)
UTY-XWZXZD
For control input function
(Dry contact terminal / CNA02)
UTY-XWZXZ7
For forced thermostat off function
(Apply voltage terminal / CNA03)
UTY-XWZXZE
For forced thermostat off function
(Dry contact terminal / CNA04)
UTZ-KXGC
Install when the condition under the roof is
over 80% in humidity and over 86 °F (30 °C)
in temperature.
4
Cable tie (Medium)
2
2.5. About unit of the length
All Fujitsu General products are manufactured to metric units and tolerances. United
States customary units are provided for reference only. In cases where exact dimensions
and tolerances are required, always refer to metric units.
1
Cable tie (Large)
Application
UTY-XWZXZC
Operating manual
Coupler heat
insulation
(Small)
Application
For covering connector
For fixing the connection pipe
(Large and Small)
For transmission and remote
controller cable binding.
For indoor side pipe joint (Small)
1
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3. INSTALLATION WORK
Fig. A
Strong and durable ceiling
Correct initial installation location is important because it is difficult to move unit after it is
installed.
3.1. Selecting an installation location
11 in (262 mm)
or more
WARNING
CAUTION
Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside.
• It will deteriorate metal parts, causing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen.
• It will deteriorate plastic parts, causing the parts to fail or the unit to leak water.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali.
• It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant
leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline.
• If gas leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not use the unit for special purposes, such as storing food, raising animals, growing
plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or flammable gas.
Install the unit where drainage does not cause any trouble.
Install the indoor unit, power supply cable, transmission cable, and remote controller
cable at least 40 in (1 m) away from a television or radio receivers. The purpose of this
is to prevent TV reception interference or radio noise.
(Even if they are installed more than 40 in (1 m) apart, you could still receive noise
under some signal conditions.)
40 in
(1,000 mm)
or more
71 in (1800 mm) to H
Select installation locations that can properly support the weight of the indoor. Install the
units securely so that they do not topple or fall.
Obstruction
Floor
H: Maximum height from floor to ceiling
Function setting
Standard mode
High Ceiling
mode
H [in (mm)]
AUUA4
AUUA7
AUUA9 AUUA12 AUUA14 AUUA18 AUUA24
106
(2,700)
106
(2,700)
106
(2,700)
106
(2,700)
106
(2,700)
106
(2,700)
106
(2,700)
-
-
-
118
(3,000)
118
(3,000)
118
(3,000)
118
(3,000)
* Be sure to make the function settings with the remote controller according to the
installed ceiling height.
3.3. Discharge direction setting
The discharge direction can be selected as shown below.
Fig. B
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
4 (100) or more
Unit: in (mm)
Use the “Insulation kit for high humidity” (option), when the condition under the roof is
over 80% in humidity and over 86 °F (30 °C) in temperature. Otherwise, there is a risk
of condensation on the ceiling.
Decide the mounting position with the customer as follows:
(1) Install the indoor unit on a place having a sufficient strength so that it withstands
against the weight of the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) A place from where the air can be distributed evenly throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit (or RB unit) is easy.
(6) Install the unit where the connection pipe can be easily installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibrations are not amplified.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
3.2. Installation dimensions
• Leave the space specified in Fig. A so that the air from the blower will cover the entire
room.
• Install the indoor unit on a place having a sufficient strength so that it withstands against
the weight of the indoor unit.
• A place from where drainage can be extracted outdoors easily.
WARNING
Never install in a room where there is the potential of leaking flammable gas. A spark
could ignite the gas and cause an explosion or fire.
Avoid installing in a location with high temperature.
40 in
(1,000 mm)
or more
(4 directions)
(3 directions)
* Select the most appropriate
airflow direction from 3 or 4
directions according to the
shape of the room and the
installation position.
* When changing the number
of outlets, we recommend using the optional AIR OUTLET
SHUTTER PLATE KIT to
close the outlet.
Piping position
* For the specific closing pattern, please refer to the attached AIR OUTLET SHUTTER PLATE KIT’S MANUAL. (Do so before installing the cassette grille as it will be
installed on the body.)
3.4. Installing the unit
WARNING
Install the air conditioner in a location which can withstand a load of at least 5 times the
weight of the main unit and which will not amplify sound or vibration. If the installation
location is not strong enough, the indoor unit may fall and cause injuries.
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
When fastening the hangers, make the bolt positions uniform.
Perform final tightening by tightening the double nut firmly. The product may fall if not
installed properly.
Using a level, or vinyl hose filled with water, fine adjust so that the body is level.
Install the air conditioner as follows.
Indoor unit installation
(1)
(2)
(3)
(4)
(5)
(6)
Make the holes for installing in the ceiling (Fig. D).
Install the hanging bolts (M10), refer to the position in Fig. C.
Install special nut A, then special nut B onto the hanging bolt (Fig. D).
Raise the body and mount its hooks onto the hanging bolt between the special nuts.
Turn special nut B to adjust the height of the body.
Be sure to leave service access for future service at the designated position.
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Fig. C
20-7/8 (530)
(Hanging bolt position)
4. PIPE INSTALLATION
Unit: in (mm)
CAUTION
4.1. Selecting the pipe material
A (Cassette grille)
B (Ceiling openings)
21-1/4 (540)
2-15/16 (75)
(Hanging bolt position)
While welding the pipes, be sure to blow dry nitrogen gas through them.
CAUTION
Do not use existing pipes from another refrigeration system or refrigerant.
Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes
It is desirable that the amount of residual oil is less than 0.04 oz/100 ft (40 mg/10 m).
Do not use copper pipes that have a collapsed, deformed, or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may
become blocked with contaminants.
Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional (R22) refrigerant, it is necessary to
choose adequate materials.
5-5/16 (135)
9-13/16 (250)
Cassette grille
Min. 17-11/16 (450)
5-7/8 to 7-7/8 (150 to 200)
□ 22-7/16 (570) (Indoor unit)
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant R410A models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
Service access
Standard
type
Grid type
A
27-9/16
(700)
24-7/16
(620)
B
22-13/16
to 26 (580
to 660)
22-13/16
to 24 (580
to 610)
• Thicknesses of copper pipes used with R410A are as shown in the table.
• Never use copper pipes thinner than those indicated in the table even if they are available on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [in (mm)]
Thickness [in (mm)]
1/4 (6.35)
0.032 (0.80)
3/8 (9.52)
0.032 (0.80)
1/2 (12.70)
0.032 (0.80)
5/8 (15.88)
0.039 (1.00)
3/4 (19.05)
0.039 (1.20)
Min. 17-11/16 (450)
Fig. D
4 (102)
1-9/16 (40)
3-7/8 (99)
1-3/16 (30)
5-3/4 (146)
1-9/16 (40)
Unit: in (mm)
4.2. Pipe requirement
CAUTION
9-5/8 (245)
Refer to the installation manual for the outdoor unit for description of allowable pipe
length and height difference.
Use pipe with water-resistant heat insulation.
Liquid pipe
10-5/16 (262)
Drain pipe
(Connect the attached drain hose)
2-5/16 (58)
Gas pipe
Control box
4-13/16 (123)
Ceiling
1-3/16 (30)
CAUTION
Special nut A (Accessories)
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause
water leaks.
Use heat insulation with heat resistance above 248 °F (120 °C). (Reverse cycle model
only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70 %, install heat insulation around the refrigerant piping. If the
expected humidity level is 70 to 80 %, use heat insulation that is 9/16 in (15 mm) or
thicker and if the expected humidity exceeds 80 %, use heat insulation that is 13/16 in
(20 mm) or thicker. If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation. In addition, use heat insulation with heat
conductivity of 0.045 W/(m·K) or less (at 68 °F (20 °C)).
1-3/16 (30) or more
Hook
After installing the body,
tighten the nuts.
4.3. Flare connection (pipe connection)
Indoor unit
WARNING
Special nut B (Accessories)
Hanging bolt
(locally purchased) Ceiling
3/4 (19)
Tighten the flare nuts with a torque wrench using the specified tightening method. Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to leak
and generate hazardous gas if the refrigerant comes into contact with a flame.
4.3.1. Flaring
Use special flare tool exclusive for R410A.
Leveling
• Using a level, or vinyl hose filled with water, fine adjust so that the body is level.
• Inclined installation so as the drain pipe side is higher may cause a malfunction of the
float switch, and may cause water leakage.
Drain pipe
Vinyl hoses
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.
(3) Insert the flare nut (always use the flare nut attached to the indoor and outdoor units (or
RB unit) respectively) onto the pipe and perform the flare processing with a flare tool.
Use the special R410A flare tool. Leakage of refrigerant may result if other flare nuts are
used.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
entering the pipes.
Check if [L] is flared uniformly and
is not cracked or scratched.
B
Die
A
Pipe
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Dimension A [in (mm)]
Pipe outside diameter
[in (mm)]
(0)
Dimension B 0-0.015
(-0.4)
[in (mm)]
Flare tool for R410A,
clutch type
1/4 (6.35)
3/8 (9.1)
3/8 (9.52)
1/2 (13.2)
0 to 0.020
(0 to 0.5)
1/2 (12.70)
5/8 (16.6)
5/8 (15.88)
3/4 (19.7)
3/4 (19.05)
15/16 (24.0)
When using conventional (R22) flare tools to flare R410A pipes, the dimension A should
be approximately 0.020 in (0.5 mm) more than indicated in the table (for flaring with
R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the
dimension A. It is recommended that a R410A flaring tool is used.
Width across
flats
Pipe outside diameter
[in (mm)]
Width across flats of Flare
nut [in (mm)]
1/4 (6.35)
11/16 (17)
3/8 (9.52)
7/8 (22)
1/2 (12.70)
1 (26)
5/8 (15.88)
1-1/8 (29)
3/4 (19.05)
1-7/16 (36)
4.3.2. Bending pipes
• If pipes are shaped by hand, be careful not to collapse them.
• Do not bend the pipes in an angle more than 90°.
• When pipes are repeatedly bent or stretched, the material will harden, making it difficult
to bend or stretch them anymore.
• Do not bend or stretch the pipes more than 3 times.
CAUTION
CAUTION
After checking for gas leaks (refer to the Installation Manual of the outdoor unit), perform this section.
Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do
so may cause water leaks.
5. INSTALLING DRAIN PIPES
WARNING
Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat exchange erosion may occur)
Insulate the parts properly so that water will not drip from the connection parts.
Check for proper drainage after the construction by using the visible portion of transparent drain port and the drain piping final outlet on the body.
CAUTION
Do not apply adhesive agent on the drain port of the body. (Use the attached drain hose
and connect the drain piping)
• Install the drain pipe with downward gradient (1/100 to 1/50) and so there are no rises or
traps in the pipe. Unsmooth draining caused by accumulated water flow in the pipe may
cause clogged drain.
• Use general hard polyvinyl chloride pipe (Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]).
• When the pipe is long, install supporters.
• Do not perform air bleeding. Drainage may be blown out.
• Always heat insulate the indoor side of the drain pipe.
• If it is impossible to have sufficient gradient of pipe, perform drain lift-up.
Pipe size
Drain pipe
Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]
To prevent breaking of the pipe, avoid sharp bends.
Hanging fittings
If the pipe is bent repeatedly at the same place, it will break.
60 to 78 in (1.5 to 2.0 m)
4.3.3. Pipe connection
When the flare nut is tightened
properly by your hand, hold the
body side coupling with a separate
spanner, then tighten with a torque
wrench. (See the table below for the
flare nut tightening torques.)
Tighten with 2
wrenches.
Holding
wrench
Flare nut
Torque wrench
CAUTION
Hold the torque wrench at its grip,
keeping it at a right angle with the
pipe, in order to tighten the flare
nut correctly.
Indoor unit pipe
(Body side)
Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]
Downward gradient 1/100 to 1/50
PROHIBITED:
Connection pipe
Rise
Flare nut [in (mm)]
Tightening torque [lbf·ft (N·m)]
1/4 (6.35) dia.
11.8 to 13.3 (16 to 18)
3/8 (9.52) dia.
23.6 to 31.0 (32 to 42)
1/2 (12.70) dia.
36.1 to 45.0 (49 to 61)
5/8 (15.88) dia.
46.5 to 55.3 (63 to 75)
3/4 (19.05) dia.
66.4 to 81.1 (90 to 110)
Trap
Air bleeding
When lifting up drain:
• Height of inclined pipe should be less than 27 in (700 mm) from the ceiling. A rise dimension over this range will cause leakage.
• Lift up the pipe vertically at the position of 11 in (300 mm) or less from the unit.
11 in (300 mm)
or less
Ø 3/4 in [I.D.];
Ø 1-1/16 in [O.D.]
local arrangement
4.4. Installing heat insulation
Install the heat insulation material after performing a refrigerant leak check (see the Installation Manual for the outdoor unit for details).
Downward gradient
1/100 to 1/50
27 in (700 mm)
or less
Horizontal or
upward gradient
Coupler heat insulation
• Insulate by the coupler heat insulation (Accessories) around the gas pipe and liquid pipe
of indoor side.
• After installing the coupler heat insulation, wrap both end with vinyl tape so that there is
no gap.
• After affixing the coupler heat insulation, secure it with 2 cable ties (large), one on each
end of the insulation.
27 in (700 mm)
or less
Ø 1 in [I.D.]; Ø 1-5/16 in [O.D.] or more
Downward gradient 1/100 to 1/50
• Make sure that the cable ties overlap the heat insulation pipe.
Coupler heat insulation
(Accessories)
Cover this portion with
heat insulation.
Heat insulation
Heat insulation
Cable tie (Large)
(Accessories)
En-5
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Working procedure
6. ELECTRICAL WIRING
(1) Install the attached drain hose to the drain port of the body. Install the hose band
from the top of the hose within the graphic display area.
(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe) which is prepared on
site or elbow socket.
(3) (Apply color adhesive agent evenly until the gauge line and seal)
(4) Check the drainage. (See separate diagram)
(5) Install the heat insulation.
(6) Use the attached heat insulation to insulate the drain port and band parts of the body.
Install the knob
faces upward
Locally arranged
vinyl pipe
Attached hose band
(Accessories)
Attached drain hose
(Accessories)
Attached heat insulation
(Accessories)
WARNING
Electrical work must be performed in accordance with this Manual by a person certified
under the national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insufficient power supply circuit or improperly performed electrical work can cause
serious accidents such as electric shock or fire.
Before starting work, check that power is not being supplied to the all units.
For wiring, use the prescribed type of cables, connect them securely, making sure that
there are no external forces of the cables applied to the terminal connections.
Improperly connected or secured cables can cause serious accidents such as overheating the terminals, electric shock, or fire.
Securely install the electrical box cover on the unit.
An improperly installed electrical box cover can cause serious accidents such as electric
shock or fire through exposure to dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit
could result.
Use the included connection cables and power cables or ones specified by the
manufacturer. Improper connections, insufficient insulation, or exceeding the allowable
current can cause electric shock or fire.
Do not modify the power cables, use extension cables, or use any branches in the wiring. Improper connections, insufficient insulation, or exceeding the allowable current can
cause electric shock or fire.
Match the terminal block numbers and connection cable colors with those of the outdoor
unit (or RB unit). Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal board. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fire.
(a) Top view
Always fasten the outside covering of the connection cable with the cable clamp. (If the
insulator is chafed, electric discharge may occur.)
(b) Side view
3/16 to 3/8
(5 to 10)
Unit: in (mm)
Always connect the earth (ground) cable.
Improper earthing (grounding) work can cause electric shocks.
1-3/8 (35)
Drain hose
Applying area
of adhesive
Hose band
Install the remote controller cables so as not to be direct touched with your hand.
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Gauge line
13/16 (20)
Connect the connection cable firmly to the terminal board. Imperfect installation may
cause a fire.
Drain
hose
If the supply cable is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
13/16 (20)
Transparent
visible portion
(c) Hose opening view
We suggest installing GFEB breakers or follow local electrical code. When installing
this system, install using ground fault equipment breakers (GFEB) to reduce the risk of
leaking current which result in electric shock or potential fire.
CAUTION
3/16 (4) or less
Earth (Ground) the unit.
Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a
telephone earth (ground) cable.
Improper earthing (grounding) may cause electric shock.
(d) Top view
Wind the attached heat insulation
around the hose band
Do not connect power supply cables to the transmission or remote controller terminals,
as this will damage the product.
Make sure the
alignment is on top
Never bundle the power supply cable and transmission cable, remote control cable
together.
Separate these cable by 2 in (50 mm) or more.
Bundling these cables together will cause miss operation or breakdown.
NOTE: Check for drainage
When handling PCB, static electricity charged in the body may cause malfunction of the
PCB. Follow the cautions below:
• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor units for more than 10 seconds to discharge static
electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
Pour about 1 liter of water from the position shown in the diagram or from the airflow outlet
to the dew tray. Check for any abnormalities such as strange noises and whether the drain
pump functions normally.
6.1. Electrical requirement
Make sure there
are no gaps
• Select the power cable type and size
in accordance with relevant local and
national regulations.
Drain pipe
Wire cover
Watering pot
Screw
Voltage rating
208/230 V
Operating range
187 to 253 V
• Specifications for local wiring power cord and branch wiring are in compliance with local
code.
• Select the correct cable type and size according to the country or region’s regulations.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is long.
Breaker should be installed at every refrigerant system. Do not use a breaker in a different
refrigerant system.
Refer to the table for the breaker specifications of each installation condition. Perform
the power crossover wiring within the range of the same refrigerant system. When the
crossover wiring is done, make a connection for indoor units to satisfy conditions A and B
below.
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A. Current breaker requirements
Model
MCA
AUUA4TLAV1
0.29 A
AUUA7TLAV
0.51 A
AUUA9TLAV
0.51 A
AUUA12TLAV
0.51 A
AUUA14TLAV
0.51 A
AUUA18TLAV
0.51 A
AUUA24TLAV
0.78 A
6.3. Unit wiring
• MCA: Minimum Circuit Ampacity
• MAX. CKT. BKR: Maximum Circuit
Breaker
MAX. CKT. BKR
(Fuse capacity)
When the power crossover wiring is
done, make it so that the total of the
MCA of the connected RB units and
indoor units does not exceed the 11 A.
For RB unit MCA, refer to the RB unit
installation manual.
If the capacity of connected RB units
and indoor units exceeds the upper
limit, either add breakers or use a
breaker with a greater capacity.
15 A
Breaker capacity
30 mA, 0.1 sec or less
36 or less
100 mA, 0.1 sec or less
37 to 121 (*2)
*1: Heat pump type: indoor units,
Heat recovery type: indoor units
and RB units.
*2: If the 100 mA capacity breaker is
not provided, split the quantity of
the indoor units into small groups
of 9 units or less and provide a
breaker with capacity of 30 mA for
each group.
6.1.1. Cable specifications
Use
Power supply
cable
Cable type
16 to 10
Sheathed PVC cable
2 cable + earth (ground)
22 AWG LEVEL 4
(NEMA) non-polar
2 core, twisted pair
solid core diameter
0.026 in (0.65mm)
LONWORKS® compatible cable
Sheathed PVC cable
Non polar 2 core, twisted
pair
18
Thermostat cable
2 core
Use sheathed non twisted
pair cable
22
Sheathed PVC cable
Polar 3 core
22
22 to 16
Remote
controller cable
(2-wire type)
Remote
controller cable
(3-wire type)
Adjust the length of power supply cable to avoid excessive tension with referring figure
below.
Conduit connector
1-3/4 in (45 mm)
2-3/4 in (70 mm)
Earth (ground)
wire
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
(4) Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not fix 2 power supply cables with 1 screw.
Strip 1 in
(25 mm)
Cable size
(AWG)
Transmission
cable
6.3.1. Power supply cable
A. For solid core wiring
B. Ground Fault Equipment Breaker requirements
Maximum connectable “indoor units”
or “indoor units +
RB units” (*1)
Before attaching the cable to terminal block.
Remark
Loop
Cable
Screw with
special washer
Screw with
special washer
Cable end (Loop)
Cable end (Loop)
Terminal block
Cable
WARNING
When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal's pressure bonding may malfunction and
cause the cables to abnormally heat up.
6.2. Wiring method
Example
B. For strand wiring
Outdoor unit or RB unit *1
Breaker 1: Ground Fault Equipment
Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker
(MAX. CKT. BKR)
Transmission
Indoor unit
Indoor unit
Remote
control
*2
Transmission
Power supply
Indoor unit
*2
*2
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws.
(5) Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the screws from being properly tightened.
(6) Do not tighten the terminal screws too much, otherwise, the screws may break.
(7) See the table for the terminal screw tightening torques.
(8) Please do not fix 2 power supply cables with 1 screw.
Strip 3/8 in
(10 mm)
Breaker2
Breaker2
Breaker2
Breaker1
Breaker1
Breaker1
Power supply
Remote controller
(Master)
Remote controller
(Slave)
Sleeve
Remote controller
Screw with
special washer
Breaker shall be located in sight from and readily accessible from all indoor units.
*1: When connecting to the Heat Recovery System, refer to the installation manual of the
RB unit.
*2: When connecting the 2-wire type remote controller, Y3 is not used.
Cable
Screw with
special washer
Ring terminal
Ring terminal
Terminal block
(Crossover wiring of power supply)
Indoor unit
Indoor unit
Power supply
Ring terminal
Power supply
Cable
Indoor unit
Power supply
WARNING
Use ring terminals and tighten the terminal screws to the specified torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
Pull box
Breaker2
Breaker1
Pull box
Tightening torque
: Disconnect switch
Power supply
M4 screw (Power supply /L1, L2 (N), GND)
11 to 16 lbf·in (1.2 to 1.8N·m)
Disconnect switch shall be installed between indoor unit and pull box.
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6.3.2. Transmission and Remote controller cable
Transmission cable
(2) Connect the connection cable, with the cable tie.
1-3/16 in (30 mm)
3WIRE
SW1
DIP switch (SW1)
Y1,Y2,Y3:
Remote controller
cable
2WIRE
Shielded wire
(no film)
1-9/16 in (40 mm)
Cable tie (Medium)
(Accessories)
Remote controller cable
For 3-wire type
For 2-wire type
X1, X2:
Transmission cable
1-3/16 in (30 mm)
1-3/16 in (30 mm)
For 2-wire type
• When the 2 cables are attached:
PROHIBITED
GOOD
For 3-wire type
Connect the remote controller cable
Y1: Non-polar
Y2: Non-polar
Y3: Do not connect *1
Y1: Red
Y2: White
Y3: Black
Set the DIP switch (SW1)
2WIRE (Factory setting)
3WIRE
*1: If you connect the remote controller cable to the terminal Y3, 2-wire type
remote controller does not work.
Different diameter
Connect to 1 side
WARNING
Tighten the terminal screws to the specified torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Tightening torque
M3 screw (Transmission /X1, X2)
(Remote controller /Y1, Y2, Y3)
4 to 5 lbf·in
(0.5 to 0.6N·m)
Attach the conduit connector.
Earth (Ground)
Lock nut
CAUTION
To peel the film from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the wire by overtightening the
screw. On the other hand, an undertightened screw can cause faulty contact, which will
lead to a communication failure.
Conduit connector
(L1, L2 (N): Power supply cable)
(3) Install control box cover.
6.4. Connection of wiring
(4) Fix the conduit with the supporters as shown below.
Conduit (Power supply cable)
CAUTION
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
Do not bundle the remote controller cable, or wire the remote controller cable in parallel, with the indoor unit connection cable (to the outdoor unit) and the power supply
cable. It may cause erroneous operation.
(1) Remove the control box cover and install each connection cable.
Control box cover
Screw
Supporter
Indoor unit
30 in
(756 mm)
or less
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
54 in
(1,361 mm)
or less
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● Apply voltage terminal ([CNA01], [CNA03])
6.5. Optional parts wiring
When a power supply must be provided at the input device you want to connect, use the
Apply voltage terminal ([CNA01], [CNA03]).
6.5.1 Connector and DIP switch position
DC power supply
12 to 24V
Do not operate any switches other than prescribed, as it can cause the unit to operate
improperly or malfunction.
Use an insulated screwdriver to set the DIP switches.
Input
device 1
CAUTION
P.C.B
*1
Load
resistance
CNA01
*a
Controller PCB
OFF
SW4
SW3
SW2
SW1
Apply voltage terminal
Load
resistance
*a
(CNA01)
(CNA03)
Dry contact terminal
(CNA04)
Input
device 3
ON
Output terminal
(CNB01)
Input
device 2
*b
DIP switch
(SET 2)
Load
resistance
CNA03
*a
(CNA02)
Connected unit
Apply voltage terminal
For external input
CNA02
Dry contact terminal
CNA04
DIP switch SET 2 (SW2)
Input signal type switching
CNB01
Output terminal
For external output
6.5.2 Connection methods
Wire modification
When connected to Apply voltage terminals of multiple indoor units with a connected unit,
be sure to make a branch outside the indoor unit using a pull box, etc. as shown on below
example.
DC power supply
12 to 24V
Input
device 1
Wiring arrangement
Load
resistance
Input
device 2
IMPORTANT:
(1) Remove insulation from wire atBe sure to insulate the connection between the
tached to wire kit connector.
wires.
(2) Remove insulation from field
Wire kit connector
supplied cable. Use crimp type
(optional parts)
insulated butt connector to join field Locally purchased
cable and wire kit wire.
(3) Connect the wire with connecting
wire with solder.
Solder and insulate the connected parts.
Load
resistance
CNA01
CNB01
CNA01
P.C.B
CNA01
In following figure, all the possible connectors are connected for description.
In actual installation, you cannot connect all the connectors at once.
CNA02
P.C.B
P.C.B
connected unit
Transmission cable
CNA01
Indoor unit
CNA01
CNA03
*1 Make the power supply DC12 to 24V. Select a power supply capacity with an ample surplus for the connected load.
Do not impress a voltage exceeding 24V across pins 1-2, and 1-3.
*a The allowable current is DC 5mA to 10mA. (Recommended: DC5mA)
Provide a load resistance such that the current becomes DC10mA or less.
Select very low current use contacts (usable at DC12V, DC1mA or less).
*b The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.
Indoor unit
Application
Indoor unit
Name
● Dry contact terminal ([CNA02], [CNA04])
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal ([CNA02], [CNA04]).
P.C.B
*c
Ch 1
CNA04
CNA03
Cable tie (locally purchased):
Bind to the transmission cable
6.6. External input and external output (Optional parts)
(1) External input
• Indoor unit can be Operation/Stop, Emergency stop or Forced stop by using indoor unit
PCB CNA01 or CNA02.
• “Operation/Stop” mode, “Emergency stop” mode or “Forced stop” mode can be selected
with function setting of indoor unit.
• Indoor unit can be Forced thermostat off by using indoor unit PCB CNA03 or CNA04.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 492 ft
(150 m).
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
*c
Ch 2
*c
Ch 3
CNA02
GND
*d
CNA04
connected unit
*c Select very low current use contacts (usable at DC12V, DC1mA or less).
*d The wiring is different from Apply voltage terminals. Be sufficiently careful when wiring.
When connected to Dry contact terminals of multiple indoor units with a connected unit,
insulate each indoor unit with relay, etc. as shown on below example.
Input select
Use either one of these types of terminal according to the application. (Both types of
terminals cannot be used simultaneously.)
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CNA02
Indoor unit
K4
CNA02
Indoor unit
K5
P.C.B
K3
Input device 1
K6
[“Edge” input only]
Connector
Ch3 of CNA03 or CNA04
CNA02
Indicator 1
Indicator 3
Indicator 4
● Input signal type
Edge
The input signal type can be selected.
It is switched by DIP switch on the indoor unit PCB.
Edge
ON
Pulse
connected unit
● When connecting with unit equipped with a power supply
Input signal type
OFF (Factory setting)
P.C.B
Pulse
Connected
device 1
The width of pulse must be
longer than 200 msec.
Connected
device 2
● When function setting is “Operation/Stop” mode.
[In the case of “Edge” input]
Input signal
OFF → ON
Operation
ON → OFF
Stop
Connected
device 4
connected unit
Input signal
Command
Ch1
OFF → ON
Operation
Ch2
OFF → ON
Stop
* If function setting "60" is set to "00"
Connector
[In the case of “Edge” input]
OFF → ON
ON → OFF
Command
Normal
CNA01 or CNA02
Input signal
Command
Ch1
OFF → ON
Emergency stop
Ch2
OFF → ON
Normal
[In the case of “Edge” input]
Connector
Input signal
Ch1 of CNA01 or CNA02
Command
OFF → ON
Forced stop
ON → OFF
Normal
DC 12 V
0V
Status
Stop
Operation
Normal
DC 12 V
External output3
Pins 1-4
DC 12 V
External output4
Pins 1-5
0V
External heater OFF
DC 12V
External heater ON
0V
Error
Indoor unit fan stop
Indoor unit fan operation
● Indoor unit fan setting for external heater
Fan setting when turning ON output to the connected external heater can be set by
changing Dip switch on PC board.
* All indoor units of same refrigerant system stops when Emergency stop operates.
● When function setting is “Forced stop” mode.
0V
External output2
Pins 1-3
CNB01
Emergency stop
[In the case of “Pulse” input]
Connector
Output voltage
External output1
Pins 1-2
● When function setting is “Emergency stop” mode.
Input signal
Relay (Locally purchased)
Operation behavior
* The last command has priority.
* The indoor units within the same remote controller group operates in the same mode.
Ch1 of CNA01 or CNA02
CNB
01
Connected
device 3
Command
[In the case of “Pulse” input]
Connector
CNB
01
Indicator 2
Operation behavior
CNA01 or CNA02
Normal
P.C.B
When connected to multiple indoor units directly, it will cause breakdown.
Connector
ON → OFF
When indicator etc. are connected directly
NOTE :
Ch1 of CNA01 or CNA02
Thermostat off
Output select
K1 - K6: Relay
(Device for DC Current)
Connector
Command
OFF → ON
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m).
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC12V±2V, Lo 0V.
• Permissible current: 50mA
Input device 2
DIP switch [SET2 SW2]
Input signal
(2) External output
P.C.B
K2
Indoor unit
Power supply for relay
● Forced thermostat off function
P.C.B
K1
Dip switch
[SET2 SW3]
Fan setting when
ON is output to the
external heater
OFF
(Factory setting)
OFF
ON
ON
Explanation
For the fan setting details, see the
Design & Technical Manual.
[In the case of “Pulse” input]
Connector
CNA01 or CNA02
Input signal
Command
Ch1
OFF → ON
Forced stop
Ch2
OFF → ON
Normal
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
* When forced stop function is used with forming a remote controller group, connect the
same equipment to each indoor unit within the group.
• Selection method of functions
“Operation/Stop” mode or “Emergency stop” mode, “Forced stop” mode can be selected
with function setting of indoor unit.
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7. FIELD SETTING
Address
Rotary switch setting
There are 3 methods for address setting by FIELD SETTING as follows.
Set by either of the methods.
Each setting method is described (1) to (3) below.
Refrigerant
circuit
REF AD SW
× 10
×1
0
0
0
(1) IU AD, REF AD SW settings: This section (7.1. Setting the address)
1
0
(2) Remote controller settings:
2
Refer to the wired or wireless remote controller manual
for detailed setting information. (Set IU AD, REF AD
SW to 0)
(3) Automatic address settings: Refer to the outdoor unit manual for detailed setting
information. (Set IU AD, REF AD SW to 0)
CAUTION
Be sure to turn OFF the power before performing the field setting.
Do not operate any switches other than prescribed, as it can cause the unit to operate
improperly or malfunction.
Use an insulated screwdriver to set the DIP switches.
7.1. Setting the address
Manual address setting method
• If the receiver unit is attached, the indoor unit address and the refrigerant circuit address
can also be set up through the wireless remote controller.
CAUTION
Use an insulated screwdriver to set the DIP switches.
Address
Rotary switch setting
IU AD SW
Indoor unit
× 10
×1
0
0
0
1
1
0
1
0
2
2
0
2
3
0
3
3
0
3
4
0
4
4
0
4
5
0
5
5
0
5
6
0
6
6
0
6
7
0
7
7
0
7
8
0
8
8
0
8
9
0
9
9
0
9
10
1
0
10
1
0
11
1
1
11
1
1
12
.
.
.
1
.
.
.
2
.
.
.
12
.
.
.
1
.
.
.
2
.
.
.
99
9
9
63
6
3
Do not set the indoor unit address (IU AD SW) at 64 to 99.
It may result in failure.
(3) Remote controller address
i) 3-wire type
Rotary switch (RC AD SW)...Factory setting “0”
When connecting multiple indoor units to 1 standard wired remote controller, set the address at RC AD SW in sequence from 0.
Rotary switch
Example: “0”
Setting
Rotary switch
Example: “0”
Setting
range
Setting
range
Setting
Remote controller
address
Type of switch
Type of switch
Setting
example 0
0 to 15
RC AD
Indoor unit
address
0 to 63
Setting example 2
Example
IU AD×10
Refrigerant circuit
address
0 to 99
IU AD×1
If 4 indoor units are connected.
Indoor unit
Indoor unit
Indoor unit
Indoor unit
RC AD SW
0
RC AD SW
1
RC AD SW
2
RC AD SW
3
Setting example
63
REF AD×10 REF AD×1
Remote
controller
(1) Indoor unit address
Rotary switch (IU AD ×1)...Factory setting “0”
Rotary switch (IU AD ×10)...Factory setting “0”
When connecting multiple indoor units to 1 refrigerant system, set the address at IU AD SW
as shown in the Table A.
(2) Refrigerant circuit address
Rotary switch (REF AD ×1)...Factory setting “0”
Rotary switch (REF AD ×10)...Factory setting “0”
In the case of multiple refrigerant systems, set REF AD SW as shown in the table below
for each refrigerant system.
Set to the same refrigerant circuit address as the outdoor unit.
• If working in an environment where the wireless remote controller can be used, the addresses can also be set using the remote controller.
• If setting the addresses using the wireless remote controller, set the indoor unit address
and refrigerant circuit address to “00”.
(For information on setting using the wireless remote controller.)
RC AD
SW
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Address
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
ii) 2-wire type
Rotary switch (RC AD SW)...Factory setting “0”
Since the remote controller address settings are automatically configured, you do not
need to configure them.
If configuring manually, it is necessary to configure both the indoor unit and the remote
controller. For details, please refer to the remote controller manual.
7.2. Custom code setting
• Selecting the custom code prevents the indoor unit mix-up. (figure below)
(Up to 4 codes can be set.)
• Perform the setting for both the indoor unit and the remote controller.
Confusion
Indoor unit
Remote
controller
Code change
A
A
• Custom code setting for indoor unit
Set the DIP switch SET3 SW1, 2, referring to the
figure and table below.
B
C
D
B
C
D
IU AD
×10
REF AD
×1
SET3
×10
RC AD
×1
SET4
DIP switch “SET3”
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DIP switch “SET3”
DIP switch
SET3
ON
OFF
SW SW SW SW
1 2 3 4
Custom code
Function
Function
number
B
C
D
00 Mode 0
SW1
OFF
ON
OFF
ON
01 Mode 1
SW2
OFF
OFF
ON
ON
7.3. Function setting
Switching
functions
for external
inputs and
external
outputs
terminals
* Turning on the power to the indoor units initializes EEV, so make sure the piping air tight
test and vacuuming have been conducted before turning on the power.
* Also check again to make sure no wiring mistakes were made before turning on the
power.
Function details
03 Mode 3
60
Setting number
00 standard
Filter indicator interval
11
01 Longer
02 Shorter
Default
05 Mode 5
06 Mode 6
Filter indicator action
13
Display only
on central
02
remote controller
00 standard
Ceiling
airflow
Vertical
airflow direction
Cool air
temperature
trigger
20
01 High Ceiling
00 standard
23
01 Raise
00 standard
30
01 Adjust (1)
02 Adjust (2)
00 standard
01 Adjust (1)
Heat air
temperature
trigger
31
02 Adjust (2)
03 Adjust (3)
00 Enable
Auto restart
40
01 Disable
00 Super low
Cool Air
Prevention
43
Follow the
setting on
01
the remote
controller
00 Start/Stop
01
External
control
Emergency
stop
46
02 Forced stop
00 All
Error report
target
Fan setting when
cooling
thermostat
OFF
47
Display only
on central
01
remote controller
00
49
Follow the
setting on
the remote
controller
01 Stop
00
Auxiliary heater control 1
01
Auxiliary heater control 2
Heat pump
02 prohibition
control
61
03
Heater selection control
using outdoor
temperature 1
04
Heater selection control
using outdoor
temperature 2
Details
Adjust the filter cleaning interval
notification. If the notification
is too early, change to setting
01. If the notification is too late,
change to setting 02.
00 Enable
01 Disable
04 Mode 4
08 Mode 8
Control
switching
of external
heaters
Enable or disable the filter indicator. Setting 02 is for use with a
central remote controller.
Regulate the airflow according
to the needs of the installation
location. When set to 01, the air
flow will be stronger. (Cassette
type only)
Adjust the vertical airflow direction. All airflow direction louvers
are adjusted together.
(Cassette type only)
Adjust the cool air trigger
temperature. To lower the trigger
temperature, use setting 01. To
raise the trigger temperature,
use setting 02.
Adjust the heat air trigger temperature. To lower the trigger temperature by 11 degrees F (6 degrees
C), use setting 01. To lower the
trigger temperature by 7 degrees
F (4 degrees C), use setting 02. To
raise the trigger temperature, use
setting 03.
01 Setting 1
02 Setting 2
62
03 Setting 3
04 Setting 4
05 Setting 5
(Forbidden)
70
Sets the control method for the
external heater being used. For
details of the control method,
see the Design & Technical
Manual.
• Sets the temperature conditions when the external heater
is ON.
• For the temperature conditions,
see "Temperature conditions
when the external heater is
ON". For a more detailed
explanation, see the Design &
Technical Manual.
00 Setting 0
Operating
temperature
switching
of external
heaters
Details
• Set this function when connecting the VRF system to a ventilator, economizer, humidifier, or
other external device.
• The connection terminal
functions can be changed
depending on the type of external device. For details of the
connection terminal functions,
see the Design & Technical
Manual.
07 Mode 7
00
Temperature conditions when the external heater is ON
Temperature (t) when the external heater is ON= Room temperature - set temperature
Set value of function: 61
00
Set value of function: 62
Function
number
Default
02 Mode 2
• FUNCTION SETTING can be performed with the wired or wireless remote controller.
(The remote controller is optional equipment)
• Refer to the wired or wireless remote controller manual for detailed setting information.
• Refer to “7.1. Setting the address.” for indoor unit address and refrigerant circuit address
settings.
• Turn the power of the indoor unit ON before starting the setting.
Function
Setting number
A (Factory
setting)
00
01
t < -5.4°F (-3°C)
02
03
04
t ≤ -0.9°F (-0.5°C)
01
t < -3.6°F (-2°C)
t ≤ -1.8°F (-1°C)
02
t < -3.6°F (-2°C)
t ≤ -3.6°F (-2°C)
03
t < -5.4°F (-3°C)
t ≤ -5.4°F (-3°C)
04
t < -7.2°F (-4°C)
t ≤ -7.2°F (-4°C)
05
t < -9.0°F (-5°C)
t ≤ -9.0°F (-5°C)
7.3.1. Button name and function
Enable or disable automatic
system restart after a power
outage.
Restrain the cold airflow with
making the airflow lower when
starting heating operation. To
correspond to the ventilation,
set to 01.
Allow an external controller to
start or stop the system, or to
perform an emergency stop.
* If an emergency stop is
performed from an external
controller, all refrigerant systems will be disabled.
* If forced stop is set, indoor unit
stops by the input to the external input terminals, and Start/
Stop by a remote controller is
restricted.
Change the target for reporting errors. Errors can either be reported
in all locations, or only on the
central remote controller.
When set to 01, the fan stops
when the thermostat is OFF in
cooling operation. Connection
of the wired remote controller
(2-wire type or 3-wire type)
and switching its thermistor are
necessary.
(1) Filter indicator lamp (Red)
(2) Timer indicator lamp (Orange)
(3) Operation indicator lamp (Green)
(4) Manual auto button
7.3.2. Checking the function settings
• Press and hold the “MANUAL AUTO” button on the indoor unit for 3 seconds to check
the function settings. It is necessary to disconnect the power in order to return to normal
operation mode.
(1) Indoor unit and refrigerant address indication
Indication pattern
Indication pattern
Indicator name
Indoor unit
address
Refrigerant address
OPERATION indicator lamp
(Green)
ON
TIMER indicator lamp (Orange)
Address: tens place (0.5s ON/0.5s OFF)
FILTER indicator lamp (Red)
Address: ones place (0.5s ON/0.5s OFF)
Flash (1.0s ON/1.0s OFF)
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• Indoor unit address example
8.2. Install cassette grille to indoor unit
(Example) ADDRESS : 24
(1) Install the cassette grille on the indoor unit.
“DRAIN” mark
1 cycle 12 sec
OPERATION ON
indicator lamp
(Green)
OFF
ON
TIMER
indicator lamp
(Orange)
OFF
ON
FILTER
indicator lamp
OFF
(Red)
“PIPE” mark
ON
0.5s 0.5s 0.5s 0.5s
10 sec
0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s 0.5s
8 sec
• Refrigerant address example
(Example) ADDRESS : 30
1 cycle 12 sec
ON
OFF
ON
OFF
ON
1.0s
1.0s
1.0s
1.0s
1.0s
1.0s
0.5s 0.5s 0.5s 0.5s 0.5s 0.5s
1.0s
* Align the stamped marks on the cassette grille against the pipe and the drain of the
indoor unit.
9 sec
CAUTION
Use only the supplied screws to install the cassette grille.
OFF
OFF
• Setting details
3/16 to 1/4 in
(5 to 7 mm)
OPERATION
indicator lamp
(Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
Indoor unit
Function number
Item
Setting number
01
Indoor unit address
00 to 63
02
Refrigeration address
00 to 99
For use with a remote controller, set all rotary switches to 0, and refer to “7.1. Setting the
address” for details.
All switches are set to 0 at the factory.
Sealant
Ceiling
Cassette grille
(2) Others
Indication pattern
Indicator Name
No gap between ceiling and
cassette grille around entire
periphery
Indication pattern
OPERATION indicator lamp (Green) Function number; tens place (0.5s ON/0.5s OFF)
TIMER indicator lamp (Orange)
Function number; ones place (0.5s ON/0.5s OFF)
FILTER indicator lamp (Red)
Setting number: (0 to 9) (0.5s ON/0.5s OFF)
(2) Connect the connector.
Cable (louver): WHITE
Cable (display): WHITE
Cable (louver): RED
(Example) Function : 31, Setting number : 2
1 cycle 12 sec
OPERATION
indicator lamp
(Green)
TIMER
indicator lamp
(Orange)
FILTER
indicator lamp
(Red)
ON
OFF
ON
OFF
ON
OFF
0.5s 0.5s 0.5s 0.5s 0.5s 0.5s
9 sec
0.5s 0.5s
11 sec
0.5s 0.5s 0.5s 0.5s
10 sec
8. CASSETTE GRILLE INSTALLATION
8.1. Remove the intake grille
Indoor unit side
• Arrange the cables as illustrated below.
(1) Slide the 2 grille hook
Standard type
Grid type
(3) Attach the connector cover.
Connector cover
Screw
Grille hook
(2) Open the intake grille and remove.
Grille hook
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8.3. Attach the intake grille
Error indications
The installation is the reverse of “REMOVING THE INTAKE GRILLE”.
The intake grille can be rotated and installed 4 ways to suit the user’s preference.
OPERATION
lamp (green)
CAUTION
The louver angle cannot be changed if the power is not on, (If moved by hand, it may
be damaged.)
TIMER
lamp
(orange)
FILTER
lamp (red)
Wired Remote
Controller
Error code
Error contents
(3)
(1)
Indoor unit power supply
abnormal
(3)
(2)
Indoor unit main PCB error
(3)
(10)
Indoor unit communication
circuit (wired remote controller)
error
(4)
(1)
Indoor unit room temp.
thermistor error
(4)
(2)
Indoor unit heat ex. temp.
thermistor error
(5)
(1)
Indoor unit fan motor 1 error
(5)
(2)
Indoor unit coil (expansion
valve) error
(5)
(3)
Indoor unit water drain
abnormal
(9)
(15)
Outdoor unit miscellaneous
error
(13)
(1)
RB unit error
The grille assembly is directional relative to the air conditioner body.
Install so that there is no gap between the grille assembly and the air conditioner body.
9. TEST RUN
9.1. Test run using Outdoor unit (PCB)
• Refer to the Installation Manual for the outdoor unit if the PCB for the outdoor unit is to
be used for the test run.
9.2. Test run using Outdoor unit (PCB)
• Refer to the Installation Manual for the remote controller to perform the test run using the
remote controller.
• When the air conditioner is being test run, the OPERATION and TIMER indicator lamps
flash slowly at the same time.
10. CHECK LIST
Pay special attention to the check items below when installing the indoor unit(s). After
installation is complete, be sure to check the following check items again.
CHECK ITEMS
If not performed correctly
Has the indoor unit been installed correctly?
Vibration, noise, indoor unit
may drop
Has there been a check for gas leaks
(refrigerant pipes)?
No cooling, No heating
Has heat insulation work been completed?
Water leakage
Does water drain easily from the indoor
units?
Water leakage
Is the voltage of the power source the
same as that indicated on the label on the
indoor unit?
No operation, heat or burn
damage
CHECK
BOX
Display mode
Are the wires and pipes all connected
completely?
No operation, heat or burn
damage
Is the indoor unit earthed (grounded)?
Short circuit
Is the connection cable the specified
thickness?
No operation, heat or burn
damage
Are the inlets and outlets free of any
obstacles?
No cooling, No heating
Does start and stop air conditioner operation by remote control unit or external
device?
No operation
()
:
0.5 s ON / 0.5 s OFF
:
0.1 s ON / 0.1 s OFF
:
Number of flashing
Wired remote controller display
UTY-RNKU (3-wire type)
Error code
UTY-RNRUZ* (2-wire type)
Touch the [Next Page] (or [previous page])
to switch to other indoor unit information.
Error icon
After installation is completed, has the
proper operation and handling been
explained to the user?
Fri 10:00AM
Mode
Set Temp.
Fan
Status
Page 1/ 4
Air Flow Direction
VT
1
Individual
Economy
Unoccupied
Status
11. ERROR CODES
If you use a wired type remote controller, error codes will appear on the remote controller
display. If you use a wireless remote controller, the lamp on the photodetector unit will
output error codes by way of blinking patterns. See the lamp blinking patterns and error
codes in the table below.
Error indications
OPERATION
lamp (green)
TIMER
lamp
(orange)
FILTER
lamp (red)
HZ
Wired Remote
Controller
Error code
Menu
Touch the [Status].
Monitor
Off
Anti Freeze
Next
Page
3
Off
Error
Information
Touch the [Error Information].
2-digit numbers are corresponding to
the error code in the preceding table.
For more information, refer to the installation manual of the remote controller.
Error contents
(1)
(2)
Remote controller
communication error
(1)
(4)
Network communication error
(1)
(6)
Peripheral unit communication
error
(2)
(6)
Indoor unit address setting
error
(2)
(9)
Connection unit number error
in wired remote controller
system
For details on marking the ERROR CODES, please refer to the Manual of “IR Receiver
Unit” or “Wired Remote Controller”.
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