Fujitsu ASTG18LVCC Installation Manual

Fujitsu ASTG18LVCC Installation Manual
AIR CONDITIONER
INSTALLATION MANUAL
INDOOR UNIT (Wall Mounted Type)
For authorized service personnel only.
PART No. 9318658019
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AIR CONDITIONER
INSTALLATION MANUAL
PART No. 9318658019
Never touch electrical components immediately after the power supply
has been turned off. Electric shock may occur. After turning off the
power, always wait 5 minutes before touching electrical components.
1. SAFETY PRECAUTIONS���������������������������������������������������������������������2
This unit contains no user-serviceable parts. Always consult authorized
service personnel to repairs.
INDOOR UNIT (Wall Mounted Type)
Contents
2. ABOUT THE UNIT��������������������������������������������������������������������������������2
3. GENERAL SPECIFICATION����������������������������������������������������������������3
4. ELECTRICAL REQUIREMENT������������������������������������������������������������4
5. SELECTING THE MOUNTING POSITION������������������������������������������4
6. INSTALLATION WORK������������������������������������������������������������������������4
7. ELECTRICAL WIRING�������������������������������������������������������������������������6
8. FINISHING�������������������������������������������������������������������������������������������7
9. FRONT PANEL REMOVAL AND INSTALLATION��������������������������������8
10. TEST RUN������������������������������������������������������������������������������������������8
11. OPTIONAL KIT INSTALLATION (UTY-TWBXF)���������������������������������9
12. FUNCTION SETTING����������������������������������������������������������������������10
13. CUSTOMER GUIDANCE�����������������������������������������������������������������12
14. ERROR CODES�������������������������������������������������������������������������������12
• Branch box which is specified in this manual is the equipment to support the indoor unit of multi-connection type.
1. SAFETY PRECAUTIONS
• 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.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death or serious
injury of the user.
Request your dealer or a professional installer to install the indoor unit
in accordance with this installation manual. An improperly installed unit
can cause serious accidents such as water leakage, electric shock, or
fire. If the indoor unit is installed 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.
When moving, consult authorized service personnel for disconnection
and installation of the unit.
Do not touch the aluminum fi ns of heat exchanger built-in the indoor
or outdoor unit to avoid personal injury when you install or maintain the
unit.
Do not place any other electrical products or household belongings
under indoor unit or outdoor unit.
Dripping condensation from the unit might get them wet, and may
cause damage or malfunction of your property.
2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant
The basic installation work procedures are the same as conventional
refrigerant (R22)models.
However, pay careful attention to the following points:
Since the working pressure is 1.6 times higher than that of conventional refrigerant(R22) models, some of the piping and installation and
service tools are special. (See the table below.)
Especially, when replacing a conventional refrigerant (R22) model with
a new refrigerant R410A model, always replace the conventional piping
and flare nuts with the R410A piping and flare nuts.
Models that use refrigerant R410A have a different charging port thread
diameter to prevent erroneous charging with conventional refrigerant
(R22) and for safety. Therefore, check beforehand. [The charging port
thread diameter for R410A is 1/2 inch.]
Be more careful that foreign matter (oil, water, etc.) does not enter the
piping than with refrigerant (R22) models. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
When charging the refrigerant, take into account the slight change in
the composition of the gas and liquid phases. And always charge from
the liquid phase where refrigerant composition is stable.
2.2. Special tool for R410A
Tool name
Contents of change
Gauge manifold
Pressure is high 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 the gauge with seals -0.1 to
5.3 MPa (-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Charging hose
To increase pressure resistance, the hose
material and base size were changed.
Vacuum pump
A conventional vacuum pump can be used by
installing a vacuum pump adapter.
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A.
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 work must be performed in accordance with national wiring
standards by authorized personnel only.
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in personal
harm to the user, or damage to property.
Read carefully all security information before use or install the air
conditioner.
Do not attempt to install the air conditioner or a part of the air
conditioner by yourself.
This unit must be installed by qualifi ed personnel with a capacity certifi
cate for handling refrigerant fl uids. Refer to regulation and laws in use
on installation place.
The installation must be carried out in compliance with regulations in
force in the place of installation and the installation instructions of the
manufacturer.
This unit is part of a set constituting an air conditioner. It must not be
installed alone or with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker
operating on all wires with a distance between contact of 3 mm for this
unit.
The unit must be correctly grounded and the supply line must be
equipped with a differential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed
in explosive atmosphere.
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Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the
amount of residual oil is less than 40 mg/10 m. Do not use copper pipes
having a collapsed, deformed or discolored portion (especially on the
interior surface). Otherwise, the expansion value or capillary tube may
become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials.
WARNING
Do not use the existing (for R22) piping and flare nuts.
If the existing materials are used, the pressure inside the refrigerant
cycle will rise and cause failure, injury, etc. (Use the special R410A
materials.)
When installing and relocating the air conditioner, do not mix gases
other than the specified refrigerant (R410A) to enter the refrigerant
cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the
cycle will rise to an abnormally high value and cause failure, injury, etc.
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Name
2.3. For authorized service personnel only.
WARNING
For the air conditioner to operate satisfactorily, install it as outlined in
this installation manual.
Connect the indoor unit and outdoor unit or branch box with the air
conditioner piping and cables available from your local distributor. This
installation manual describes the correct connections using the installation set available from your local distributor.
Do not turn on the power until all installation work is complete.
CAUTION
This installation manual describes how to install the indoor unit only.
To install the outdoor unit or branch box, refer to the installation manual
included with the outdoor unit or branch box.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the
operating manual.
2.4. Accessories
Q’ty
Name and Shape
Remote controller
holder
1
1
Wall cap
Connection cable (4-conductor)
1
Saddle
Wall pipe
1
Drain hose
Decorative tape
1
Tapping screws
Vinyl tape
1
Sealant
Q’ty
1
1 set
1
1 set
1
2.4. Optional parts
Refer to each installation manual for the method of installing optional
parts.
Parts name
Model No.
Wired remote controller *
UTY-RNNYN
Simple remote controller *
UTY-RSNYN
External connect kit *
UTY-XWZXZ5
Communication kit
UTY-TWBXF
Application
For air conditioner
operation
For air conditioner
operation
For control input/output
port
For the installation of
optional parts
* Optional communication kit is necessary for the installation.
The following installation accessories are supplied. Use them as required.
Name and Shape
Operating manual
Name
Q’ty
Connection pipe assembly
Q’ty
1
3. GENERAL SPECIFICATION
This installation manual briefly outlines where and how to install the air
conditioning system. Please read over the entire set of instructions for
the indoor and outdoor units and make sure all accessory parts listed are
with the system before beginning.
3.1. Type of copper pipe and insulation material
Installation manual
(This manual)
CAUTION
Cloth tape
1
Wall hook bracket
1
Remote controller
8
Tapping screw
(small)
1
2
Air cleaning filter
Battery
2
Selecting pipe sizes
The diameters of the connection pipes according to the capacity of
the indoor unit.
Refer to the following table for the proper diameters of the connection pipes between the indoor unit and outdoor unit or branch box.
Tapping screw
(big)
1
Refer to the installation manual for the outdoor unit for description of
allowable pipe length and height difference.
2
Seal A
1
It is used when the diameter of gas pipe is Φ 12.70
or more
The following items are necessary to install this air conditioner. (The
items are not included with the air conditioner and must be purchased
separately)
Capacity of indoor
unit
7-12
14-18
22
Gas pipe size
(thickness) [mm]
Ø 9.52(0.8)
Ø 12.70(0.8)
Ø 15.88(1.0)
Liquid pipe size
(thickness) [mm]
Ø 6.35(0.8)
Ø 6.35(0.8)
Ø 6.35(0.8)
CAUTION
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 120°C. (Reverse cycle
model only)
In addition, if the humidity level at the installation lo-cation of the
refrigerant piping is expected to exceed 70%, install heat insulation
around the refrigerant piping. If the expected humidity level is 7080%, use heat insulation that is 15 mm or thicker and if the expected
humidity exceeds 80%, use heat insulation that is 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 20 °C).
3.2. Additional materials required for installation
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
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4. ELECTRICAL REQUIREMENT
The indoor unit is powered from the outdoor unit or branch box. Do not
power indoor unit from separate power source.
WARNING
Refer to local codes for acceptable cable type.
Cable
Cable size [mm] *
Connection cable
1.5
6. INSTALLATION WORK
6.1. Installation dimensions
Wall hook bracket
63 mm or more
70 mm or more
Remarks
3 cable + Ground, 1 Ø 240 V
85 mm or more
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable
gauge if voltage drop is 2% or more.
* Use conformed cable with Type60245 IEC57.
5. SELECTING THE MOUNTING POSITION
1.5 m or more
(Wall cap)
1.8 m or more
Decide the mounting position with the customer as follows:
Remote controller
holder
5.1. Indoor unit
(1) Install the indoor unit level on a strong wall which is not subject to
vibration.
(2) The inlet and outlet ports should not be obstructed : the air should be
able to blow all over the room.
(3) Install the unit near an electric outlet or special branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit or branch box is
easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown
in [5.1. Installation dimensions]. Also install the unit where the filter
can be removed.
Correct initial installation location is important because it is diffi cult to
move unit after it is installed.
Remote
controller
Tapping screw
(small)
Connection Cable
Conform to Type245 IEC57
* The distance between the wall hook bracket and the ceiling should be
120 mm or more.
** The side next to the sidewall must follow the size indicated in the
figure.
6.2. Installation piping direction
The piping can be connected in the 6 directions indicated.
When the piping is connected in direction , , or cut along the
piping groove in the side of the front cover with a hacksaw.
(Rear)
WARNING
elect installation locations that can properly support the weight of the
S
indoor. Install the units securely so that they do not topple or fall.
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 fall 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 fall 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.
Left
outlet
Right
outlet
Bottom outlet
6.3. Cutting the hole the wall for the connecting piping
(1) Cut a 65mm diameter hole in the wall at the position shown in figure.
(2) When cutting the wall hole at the inside of the installation frame, cut
the hole within the range of the left and right center marks 40 mm
below the installation frame. When cutting the wall hole at the outside
of the installation frame, cut the hole at least 10 mm below less.
(3) Cut the hole so that the outside end is lower (5 to 10 mm) than the
inside end.
(4) Always align the center of the wall hole. If misaligned, water leakage
will occur.
(5) Cut the wall pipe to match the wall thickness, stick it into the wall cap,
fasten the cap with vinyl tape, and stick the pipe through the hole.
(The connection pipe is supplied in the installation set.)
(6) For left piping and right piping, cut the hole a little lower so that drain
water will flow freely.
Center mark
If children under 10 years old may approach the unit, take preventive
measures so that they cannot reach the unit.
9318658019_0427.indd
65 mm dia. hole
4
65 mm dia. hole
Fasten with
vinyl tape
(Wall cap)
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Left rear
outlet
The following items are necessary to install this air conditioner. (The
items are not included with the air conditioner and must be purchased
separately.)
Install the indoor unit, outdoor unit, branch box, power supply cable,
transmission cable, and remote control cable at least 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 1 m apart, you could still receive
noise under some signal conditions.)
Install the indoor unit on the wall where the height from the floors more
than 1.8 m.
Left bottom
outlet
Right outlet
5 to 10 mm low
(Wall pipe)
(Inside)
Wall
(Outside)
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Installation method of Drain cap
WARNING
If the wall pipe is not used, the cable interconnecting the indoor and
outdoor units may touch metal and cause electric leakage.
• Use a hexagonal wrench (4 mm at opposite side) to insert the drain
cap, till the drain cap contacts the tip of drain cook.
1RJDS
6.4. Installing the wall hook bracket
(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically. If the wall hook bracket is titled, water will drip to
the floor.
(2) Install the wall hook bracket so that it is strong enough to withstand
the weight of an adult.
• Fasten the wall hook bracket to the wall with 6 or more screws through
the holes near the outer edge of the bracket.
• Check that there is no rattle at the wall hook bracket.
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Removal method of drain hose
• Remove the screw at the left of drain hose and pull out drain hose.
Drain hose
Screw
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Drain fixture
Installation method of drain hose
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CAUTION
Install the wall hook bracket horizontally and perpendicularly.
• Vertically insert the drain hose toward the inside, so that the drain
fixture (blue) can accurately align with the screw hole around the drain
cock. After inserting and before replacing, please reinstall and fix the
removed screws.
Screw hole
Drain cock
Screw
6.5. Forming the drain hose and pipe
[Rear piping, Right piping, Bottom piping]
• Install the indoor unit piping in the direction of the wall hole and bind
the drain hose and pipe together with vinyl tape.
• Install the piping so that the drain hose is at the bottom.
• Wrap the pipes of the indoor unit that are visible from the outside.
Right piping
Drain hose
Drain fixture
• Please hold around the joint of the drain hose during working.
• As the screw is inside, be sure to use screwdriver treated with magnet.
• For left piping and left rear piping, align the marks on the wall hook
bracket and shape the connection pipe.
• Bend the connection piping at the bend radius of 70 mm or more and
install no more than 35 mm from the wall.
• After passing the indoor piping and drain hose through the wall hole,
hang the indoor unit on the hooks at the top and bottom of the wall
hook bracket.
Connection pipe
(6.35 mm dia.)
Pipe (top)
Rear piping
Indoor unit drain hose (bottom)
Bottom
piping Bind with vinyl tape
[For Left rear piping, Left piping]
Interchange the drain cap and the drain hose.
Drain cap
Remove the drain cap
by pulling at the projection
at the end of the cap with
pliers, etc.
Connection pipe Align the marks
(9.52 mm or
12.70 mm or
15.88 mm dia)
Top hooks
For left outlet piping,
cut off the piping outlet
cutting groove
with a hacksaw.
Indoor unit
drain hose
CAUTION
In order to align the drain hose and drain cap, be sure to insert securely and vertically. Incline insertion will cause water leakage.
When inserting, be sure not to attach any material besides water. If any
other material is attached, it will cause deterioration and water leakage.
After removing drain hose, be sure not to forget mounting drain cap.
Be sure to fix the drain hose with tape to the bottom of piping.
Prevent drain water frozen under low temperature environment. When
installing indoor unit’s drain hose outdoors, necessary measure for
frost protection should be taken to prevent drain water frozen. Under
low temperature environment (when outdoor temperature under 0 °C),
after cooling operation is executed, water in the drain hose could be
frozen. Once drain water is frozen, the drain hose will be blocked and
water leakage may be resulted for indoor unit.
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Bottom hooks
Bottom hooks
After hooking the indoor unit to the top hook, hook the fittings of the
indoor unit to the 2 bottom hooks while lowering the unit and pushing it
against the wall.
[Installing the indoor unit]
• Hang the indoor unit from the hooks at the top of the wall hook
bracket.
• Insert the spacer, etc. between the indoor unit and the wall hook
bracket and separate the bottom of the indoor unit from the wall.
Indoor unit
(Spacer)
Wall hook bracket
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In order to prevent water from leaking into the control box, make sure
that the piping is well insulated.
6.6. Flare connection (Pipe connection)
CAUTION
Tighten the flare nuts with a torque wrench using the specified tightening method. Otherwise, the fl are nuts could break after a prolonged
period, causing refrigerant to leak and generate hazardous gas if the
refrigerant comes into contact with a flame.
6.6.1 Flaring
•• Use special pipe cutter and flare tool exclusive for R410A.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that the 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 respectively) onto the pipe and perform the flare
processing with a 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
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
Indoor unit pipe
(Body side)
Connection pipe
Flare nut [mm (in.)]
6.35 (1/4) dia.
9.52 (3/8) dia.
12.70 (1/2) dia.
15.88 (5/8) dia.
19.05 (3/4) dia.
Tightening torque [N·m (kgf·cm)]
16 to 18 (160 to 180)
32 to 42 (320 to 420)
49 to 61 (490 to 610)
63 to 75 (630 to 750)
90 to 110 (900 to 1,100)
7. ELECTRICAL WIRING
Die
A
L
Pipe
Pipe outside
diameter
[mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
7.1. Electrical requirement
Dimension A [mm]
Flare tool for R410A,
clutch type
0
Dimension B-0.4
[mm]
0 to 0.5
9.1
13.2
16.6
19.7
24.0
When using conventional flare tools to flare R410A pipes, the dimension A should be approximately 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.
Width across flats
Pipe outside
diameter [mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
Width across flats
of Flare nut [mm]
17
22
26
29
36
Electrical wire size.
Connection cable (mm2)
1.5
• Always make the air conditioner power supply a special branch circuit
and provide a special breaker.
• Use conformed cable with Type245 IEC57.
• Before starting work check that power is not being supplied to all poles
of the indoor unit and outdoor unit.
• Install all electrical works in accordance to standard.
• Install the disconnect device with a contact gat of at least 3 mm in all
poles nearby the units. (Both indoor unit and outdoor unit)
• Wiring size must comply with the applicable local and national code.
7.2. Indoor unit wiring
(1) Remove the cable clamp.
Wire cover
Cable clamp
Screw
6.6.2 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 bend or stretched, the material will harden,
making it difficult to bend or stretch them any more.
• Do not bend or stretch the pipes more than 3 times.
Connection
cable
Screw
CAUTION
PP
If the pipe is bent repeatedly at the same place, it will break.
6.6.3 Pipe connection
PP
To prevent breaking of the pipe, avoid sharp bends.
CAUTION
Be sure to Install the pipe against the port on the indoor unit correctly.
If the centering is improper, the flare nut cannot tighten smoothly. If the
flare nut is forced to turn, the threads will be damaged.
Do not remove the flare nut from the indoor unit pipe until immediately
before connecting the connection pipe.
Hold the torque wrench at its grip, keeping it in the right angle with the
pipe, in order to tighten the flare nut correctly.
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.
Connect the piping so that the control box cover can easily be removed
for servicing when necessary
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(2) Connect the end of the connection cable fully into the terminal block.
(3) Fasten the connection cable with a cable clamp.
Cable clamp
Screw
Connection
cable
Insert the tab into the square hole of the
indoor unit and fasten with a screw.
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7.3. How to connection wiring to the terminals
Caution when wiring cable
When stripping off the coating of a lead wire, always use a special tool
such as a wire stripper. If there is no special tool available, carefully strip
the coating with a knife etc.
(1) Use crimp-type terminals with insulating sleeves as shown in the
figure below to connect to the terminal block.
(2) Securely clamp the crimp-type terminals to the wires using an
appropriate tool so that the wires do not come loose.
Crimp-type
terminal
Strip : 10 mm
Sleeve
(3) Use the specified wires, 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. 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.
8. FINISHING
(1) Insulate between pipes.
• For rear, right, and bottom piping, overlap the connection pipe insulation and indoor unit pipe insulation and bind them with vinyl tape
so that there is no gap.
• For left and left rear piping, butt the connection pipe insulation and
indoor unit pipe insulation together and bind them with and vinyl
tape so that there is no gap.
• For left and left rear piping, wrap the area which accommodates the
rear piping storage section with cloth tape.
• For left and left rear piping, bind the connection cable to the top of
the pipe with vinyl tape.
• For left and left rear piping, bundle the piping and drain hose together by wrapping them with cloth tape over within the range of which
they fit into the rear piping storage section.
Overlap the insulation
Connection pipe
(insulation)
Bind the pipes together
so that there is no gap.
Wrap with cloth tape
Pipe
Screw with
special washer
Screw with special washer
Crimp-type terminal
Wire
Cloth tape
Drain hose
Crimp-type
terminal
Terminal blocks
Indoor unit pipe
(insulation)
Vinyl tape
It is used when the diameter
of gas pipe is 1/2 inch or more
Wire
(6) See the table below for the terminal screw tightening torques.
Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation)
and wrap with seal A so that
there is no gap.
Tightening torque [N·m (kgf·cm)]
M4 screw
1.2 to 1.8 (12 to 18)
M5 screw
2.0 to 3.0 (20 to 30)
CAUTION
Match the terminal block numbers and connection cable colors with
those of the outdoor unit or branch box.
Erroneous wiring may cause burning of the electric parts.
Connect the connection cables firmly to the terminal block. Imperfect
installation may cause a fire.
Always fasten the outside covering of the connection cable with the
cable clamp. (If the insulator is chafed, electric discharge may occur.)
Always connect the ground wire.
Do not use the earth screw of the indoor unit for the connection other
than a specified outdoor unit or branch box.
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(2) Temporarily fasten the connection cable along the connection pipe
with vinyl tape. (Wrap to about 1/3 the width of the tape from the bottom of the pipe with tape so that water does not enter.)
(3) Fasten the connection pipe to the outside wall with saddles, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealant so that rain water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
(Outside wall cap)
(Saddle)
(Sealant)
Wall
(Outdoors)
Pipe
Check the following:
OK
PROHIBITED
PROHIBITED
PROHIBITED
Lifted up
Wave
End in water
Drain hose
Saddle
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9. FRONT PANEL REMOVAL AND INSTALLATION
9.1. Intake grille removal
(1) Open the intake grille.
(2) Pull down the knob.
(3) Lift the intake grille upward, until the axle at the top of the intake grille
is removed.
Intake grille
Intake grille
Mounting shaft
Bearing
Knob
Front panel
10. TEST RUN
• Perform test run.
• For the test run method, refer to the operating manual.
• The outdoor unit, may not operate, depending on the room temperature. In this case, press the TEST RUN button on the remote controller
while the air conditioner is running. (Point the transmitter section of the
remote controller toward the air conditioner and press the TEST RUN
button with the tip of a ball-point pen, etc.)
• To end test run, press the remote controller START/STOP button.
(When the air conditioner is run by pressing the TEST RUN button, the
OPERATION indicator lamp and TIMER indicator lamp will simultaneously flash slowly.)
[Operation method]
Knob
9.2. Intake grille installation
(1) The fixing axle of the intake grille is installed on the Panel.
(2) Lay down the intake grille.
•For the operation method, refer to the operating manual.
•The outdoor unit may not operate depending on the room temperature.
•In this case, press the test run button on the remote controller while the
air conditioner is running.
(Point the transmitter section of the remote controller toward the air
conditioner and press the TEST RUN button with the tip of a ballpoint
pen, etc.)
Transmitter section
9.3. Front panel removal
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove wire cover.
(3) Remove the 4 screws.
(4) The front panel is pulled to the front, raising the upper surface, and a
front panel is removed.
Wire
Hooks
Screws cover
(2 position)
Front panel
TEST RUN button
•To end test run, press the remote controller START/STOP button.
(When the air conditioner is run by pressing the TEST RUN button, the
OPERATION Lamp and TIMER Lamp will simultaneously flash slowly.)
[Using the wired remote controller] (Option)
Front panel
For the operation method, refer to the operating manual.
(1) Stop the air conditioner operation.
(2) Press the master control button and the FAN control button
simultaneously for 2 seconds or more to start the test run.
9.4. The front panel installation
(1) Firstly, fit the lower part of the front panel, and insert top and bottom
hooks. (3 top sides, 6 bottom sides)
(2) 3 screws is attached.
(3) The wire cover is attached.
(4) The intake grille is attached.
Bottom hooks
(6 position)
Test run display
(3) Press the START/STOP button to stop the test run.
Body
Bottom holes
(6 position)
Front panel
Top holes
(3 position)
Top hooks
(3 position)
Body Center Bottom hooks
(2 position)
Center hooks Front panel
(2 position)
CAUTION
Install the front panel and INTAKE GRILLE securely. If installation is
imperfect, the front panel or INTAKE GRILLE may fall off and cause
injury.
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PP
• When you use wired remote controller, some functions may not be
used.
CAUTION
Before installing, be sure to disconnect all power supply.
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Don’t touch the heat exchanger.
During installing or removing operation, be sure not to have wire
caught by parts or draw it hard. Or it may result troubles to the airconditioner.
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BEFORE INSTALL WIRED REMOTE CONTROLLER
(1) Use a tool to cut off the terminal on the end of the remote controller
cable, and then remove the insulation from the cut end of the cable.
(2) Connect the remote controller cable and connecting cable. (wired
remote controller or simple remote controller).
Important: Be sure to insulate the connection between the cables.
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This air conditioner can be connected with the following optional kits.
• Wired remote controller
• Simple remote controller
• External connect kit
11.2. Remote controller cable modification
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11. OPTION KIT INSTALLATION (UTY-TWBXF)
Select place that will not be affected by the heat from a stove, etc.
Before setting up the optional kit, please confirm whether air-conditioner can receive the signal.
Do not connect the wired remote controller to the terminal for power
supply.
When connecting the wired remote controller with the indoor unit, use
the connecting cable (supplied with wired remote controller or simple
remote controller).
11.3. Front panel, control box shield removal
(1) Refer to “FRONT PANEL REMOVAL AND INSTALLATION” to remove
the front panel.
(2) Remove screws then remove the control box shield.
Recommended cable length of wired remote controller is 10 m. Make
sure to do insulate of connecting part when extended the cable.
Screw
Do not connect power supply with the terminal.
Control box shield
11.3.1 Installing relay control board and relay wire terminal
Control unit board
Connector (CN8)
Relay wire
11.1. Accessories (Communication kit)
The following installation accessories are supplied. Use them as required.
Name and Shape
Relay control board
Q’ty
1
Cable tie
Description
For connecting the wired
remote controller and external
connect wire.
For fixing the wires from
control box.
1
Relay wire
1
Wiring label
1
For connecting the relay
control board and control unit
board.
For display the additional wiring diagram.
Notice *2.
Clasp
Relay control board
Connector (CND01)
Clasps
*2. Notice the installing direction of the relay control board.
(The elevation of the control
box is fit for the recess of the
relay control board.)
(1) Insert the relay control board toward 2 clasps.
(2) Then set the board with the clasp.
(3) Connect the relay wire terminal to the connector (CND01) on the
relay control board.
(4) Connect the relay wire terminal to the connector (CN8) on the control
unit board.
CAUTION
Be careful not to damage the parts on the board.
Otherwise, it will cause malfunction.
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12. FUNCTION SETTING
11.4. Connecting to control unit of wire
11.4.1 Connecting to wired remote controller.
(1) Connect the cable of wired remote controller to the connector (for
wired remote controller).
(2) Hook the wire to the rib.
(3) Firmly fix with cable tie the cable of wired remote controller.
(4) Through the pass space the cable of wired remote controller.
(5) Install the control box shield. (Do not get in between control box
shield.)
Connector (for wired remote controller)
While pressing the FAN button and SET TEMP. ( ) simultaneously,
press the RESET button to enter the function setting mode.
Cord of wired remote controller
11.4.2 Connecting to external connect kit.
(1) Connect the wire of external input/output to the board of external
connect kit.
EXTERNAL INPUT: CONNECT TO NO.CNA01
EXTERNAL OUTPUT: CONNECT TO NO. CNB01,CNB02
)
(2) Hook the wire to the rib.
(3) Firmly fix the cable with the cable tie.
(4) Through the pass space the wire of external connect kit.
(5) Install the control box shield. (Do not get in between control box
shield.)
Operation Status Output
connector : CNB01 (White connector)
onfirm whether the cap for electric control box on the outdoor unit or
C
Branch box is close.
Entering the Function Setting Mode
Pass space
(
CAUTION
Confirm whether the wiring work for outdoor unit or Branch box has
been finished.
• This procedure changes to the function settings used to control the
indoor unit according to the installation conditions. Incorrect settings
can cause the indoor unit malfunction.
• After the power is turned on, perform the “FUNCTION SETTING”
according to the installation conditions using the remote controller.
• The settings may be selected between the following two: Function
Number or Setting Value.
• Settings will not be changed if invalid numbers or setting values are
selected.
• Refer to the installation manual enclosed with the remote controller
when the wired remote controller (option ) is used.
Rib
Cable tie
Perform the “FUNCTION SETTING” according to the installation
conditions using the remote controller.
Control Input
(Operation/Stop or Forced stop)
connector : CNA01 (White connector)
Rib
STEP 1
Selecting the Remote Controller Signal Code
Use the following steps to select the signal code of the remote controller.
(Note that the air conditioner cannot receive a signal code if the air
conditioner has not been set for the signal code.)
The signal codes that are set through this process are applicable only
to the signals in the FUNCTION SETTING. For details on how to set
the signal codes through the normal process, refer to Remote controller
signal code.
1Press SET TEMP. ( ) ( ) button to change
. Match
the signal code between
the code on the display to the air conditioner
signal code. (initially set to )
(If the signal code does not need to be
selected, press the MODE button and
proceed to STEP 2.)
2Press the TIMER MODE button and check
that the indoor unit can receive signals at
the displayed signal code.
3Press the MODE button to accept the signal
code, and proceed to STEP 2.
Error Status Output
connector : CNB02 (Black connector)
External
connect kit cable
Cable tie
Pass space
11.4.3 Labelling
(1) Paste the wiring label beside the label for schematic diagram inside
the front panel.
11.5. Front panel installation
Install front panel by the reverse procedures as stated in “1. FRONT
PANEL, CONTROL BOX SHIELD REMOVAL.”
The air conditioner signal code is set to A prior to shipment. Contact your retailer to change the signal code.
The remote controller resets to signal code A when the batteries in
the remote controller are replaced. If you use a signal code other than
signal code A, reset the signal code after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes (
) until you find the code which operates the air conditioner.
STEP 2
Selecting the Function Number and Setting Value
1Press the SET TEMP. ( ) ( ) buttons to select the function number.
(Press the MODE button to switch between the left and right digits.)
2Press the FAN button to proceed to setting the value.
(Press the FAN button again to return to the function number
selection.)
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3Press the SET TEMP.
( ) ( ) buttons to
select the setting value.
(Press the MODE button
to switch between the
left and right digits.)
Auto Restart
Enable or disable automatic system restart after a power outage.
(♦... Factory setting)
Function
number
Setting
value
4Press the TIMER MODE
button, and START /
STOP button, in the
order listed to confirm
the settings.
Setting Description
♦
No
After turning off the power, wait 10 seconds or more before turning on it
again.
The FUNCTION SETTING doesn’t become effective if it doesn’t do so.
Filter Sign
The indoor unit has a sign to inform the user that it is time to clean the
filter. Select the time setting for the filter sign display interval in the table
below according to the amount of dust or debris in the room. If you do
not wish the filter sign to be displayed, select the setting value for “No
indication”.
(♦... Factory setting)
Setting Description
Function
Number
Standard (400 hours)
Long interval (1,000 hours)
Short interval (200 hours)
(♦... Factory setting)
Setting
Value
Setting Description
♦
11
01
02
No
Yes
Setting Description
♦
Function
Number
Standard
Lower control
Setting
Value
00
30
Warmer control
A
B
C
(♦... Factory setting)
Function
Number
Standard
Slightly warmer control
00
44
01
02
03
Setting Description
♦
Function
Number
Operation/Stop mode
(Setting forbidden)
Setting
Value
00
46
Forced stop mode
01
02
Setting record
Record any changes to the settings in the following table.
Depending on the installed environment, the room tempera-ture sensor
may require a correction.
The settings may be changed as shown in the table below.
Lower control
Setting
Value
“Operation/Stop” mode or “Forced stop” mode can be elected.
(♦... Factory setting)
02
03
01
External input control
01
Heater Room Temperature Correction
Setting Description
Function
Number
D
(♦... Factory setting)
00
Change the indoor unit Signal Code, depending on the remote
controllers.
(♦... Factory setting)
03
Depending on the installed environment, the room tempera-ture sensor
may require a correction.
The settings may be selected as shown in the table below.
Slightly lower control
42
Setting
Value
Remote controller signal code
Cooler Room Temperature Correction
Setting Description
Function
Number
* If setting value is “00” :
Room temperature is controlled by the indoor unit tempera-ture sensor.
* If setting value is “01” :
Room temperature is controlled by either indoor unit temperature
sensor or remote controller unit sensor.
00
No indication
Warmer control
01
(Only for Wired remote controller)
The following settings are needed when use the control by wired remote
controller temperature sensor.
CAUTION
♦
00
Indoor room temperature sensor switching function
6After completing the FUNCTION SETTING, be sure to turn off the
power and turn it on again.
♦
40
Setting
Value
* Auto restart is an emergency function such as for power failure etc. Do
not start and stop the indoor unit by this function in normal operation.
Be sure to operate by the control unit, or external input device.
5Press the RESET button
to cancel the function
setting mode.
♦
Yes
Function
Number
31
Setting
Value
Setting Description
Filter sign
Cooler room temperature correction
Heater room temperature correction
Auto restart
00
Indoor room temperature sensor switching
function
01
Remote controller signal code
02
External input control
03
Setting Value
After completing the FUNCTION SETTING, be sure to turn off the power
and turn it on again.
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13. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating
manual:
(1) Starting and stopping method, operation switching, temperature
adjustment, timer, air flow switching, and other remote controller
operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
14. ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error codes by way of blinking patterns. If you use a
wired remote controller, error codes will appear on the remote controller
display. See the lamp blinking patterns and error codes in the table. An
error display is displayed only during operation.
Error display
Wired
OPERATION TIMER ECONOMY remote
controller
lamp
lamp
lamp
(green)
(orange) (green) Error code
(8)
(2)
(8)
(3)
(8)
(4)
Current sensor error
(8)
(6)
••Discharge pressure
sensor error
••Suction pressure
sensor error
••High pressure
switch error
(9)
(4)
Trip detection
(9)
(5)
(9)
(7)
(9)
(9)
4-way valve error
(10)
(1)
(10)
(3)
Discharge temp.
error
Compressor temp.
error
(10)
(4)
High pressure error
(10)
(5)
Low pressure error
(13)
(2)
Branch boxes error
[Flexible Multi]
Description
Serial communication error
Wired remote controller communication error
Check run unfinished
Indoor unit capacity
error
(1)
(1)
(1)
(2)
(1)
(5)
(2)
(2)
(2)
(3)
(2)
(4)
(3)
(2)
(3)
(5)
(4)
(1)
(4)
(2)
(5)
(1)
(5)
(15)
Indoor unit error
(6)
(2)
Outdoor unit main
PCB model information error or communication error
(6)
(3)
Inverter error
(6)
(4)
Active filter error,
PFC circuit error
(6)
(5)
Trip terminal L error
(6)
(10)
(7)
(1)
(7)
(2)
(7)
(3)
(7)
(4)
(7)
(5)
(7)
(6)
(7)
(7)
Combination error
Connection unit
number error (indoor
unit or branch unit)
[Flexible Multi]
Indoor unit PCB
model information
error
Manual auto switch
error
Inlet air temp. sensor error
Indoor unit Heat Ex.
Middle temp. sensor
error
Indoor unit fan motor
error
••Sub-cool Heat Ex.
gas inlet temp.
sensor error
••Sub-cool Heat Ex.
gas outlet temp.
sensor error
Liquid pipe temp.
sensor error
Display mode
Compressor rotor
position detection
error (permanent
stop)
Outdoor unit fan motor error
: 0.5s ON / 0.5s OFF
( ) : Number of flashing
: 0.1s ON / 0.1s OFF
Wired Remote Controller Display (Option)
Error code
Display PCB microcomputers communication error
Discharge temp.
sensor error
Compressor temp.
sensor error
Outdoor unit Heat
Ex. liquid temp. sensor error
Outdoor temp. sensor error
Suction Gas temp.
sensor error
••2-way valve temp.
sensor error
••3-way valve temp.
sensor error
Heat sink temp. sensor error
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