Air-Conditioners
PLA-A·AA
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FOR INSTALLER
INSTALLATION MANUAL
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing
the air-conditioner unit.
PARA EL INSTALADOR
MANUAL DE INSTALACIÓN
Español
Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad exterior
antes de instalar la unidad de aire acondicionado.
2. Installation location
Refer to the outdoor unit installation manual.
3. Installing the indoor unit
Caution:
Install the indoor unit at least 2.4 m, 8 ft above floor or grade level.
3.1. Check the indoor unit accessories (Fig. 3-1)
The indoor unit should be supplied with the following accessories.
1
2
Accessory name
Installation template
Q’ty
1
2
1
4
4
Washers (with insulation)
Washers (without insulation)
Pipe cover (for refrigerant piping joint)
Small diameter
3
4
3
1
1
8
4
1
1
Large diameter
4
5
6
7
Band
Screw with washer (M5 × 25) for mounting grille
Drain socket
5
6
Insulation
7
Fig. 3-1
3.2. Ceiling openings and suspension bolt installation
locations (Fig. 3-2)
37-3/8
33-27/32 to 35-13/16
31-7/8
D
(inch)
• Using the installation template (top of the package) and the gauge (supplied as an
accessory with the grille), make an opening in the ceiling so that the main unit can
be installed as shown in the diagram. (The method for using the template and the
gauge are shown.)
C
25/32 to 1-25/32
25/32 to 1-25/32
B
6-1/4
* Before using, check the dimensions of template and gauge, because they
change due to fluctuations of temperature and humidity.
* The dimensions of ceiling opening can be regulated within the range shown in
following diagram; so center the main unit against the opening of ceiling, en-
suring that the respective opposite sides on all sides of the clearance between
them becomes identical.
• Use M10 (3/8”) suspension bolts.
* Suspension bolts are to be procured at the field.
• Install securely, ensuring that there is no clearance between the ceiling panel &
grille, and between the main unit & grille.
AOuter side of main unit
7-3/4
6-1/4
33-1/16
A
BBolt pitch
CCeiling opening
DOuter side of Grille
EGrille
G
FCeiling
GMulti function casement (option)
HEntire periphery
*
Note that the space between ceiling panel of the unit and ceiling slab and etc must be 10 to
15 mm, 25/64-19/32 inch.
F
E
F
E
(mm, inch)
Min. 20
Models
C
D
H
A12, A18, A24, A30
A36, A42
241, 9-1/2”
281, 11-1/16”
258, 10-3/16”
298, 11-3/4”
Fig. 3-2
3.3. Refrigerant and drainage piping locations of indoor
G
(inch)
unit
The figure marked with * in the drawing represent the dimensions of the main unit
excluding those of the optional multi function casement. (Fig. 3-3)
ADrain pipe
A
BCeiling
ED
F
A
CGrille
2-3/8 11-1/4
14-23/32
DRefrigerant pipe (liquid)
ERefrigerant pipe (gas)
FWater supply inlet
GMain unit
(mm, inch)
A
Models
• When the optional multi-functional casement is installed, add 135 mm, 5-5/16 inch
to the dimensions marked on the figure.
A12, A18, A24, A30 80, 3-5/32”
A36, A42 84, 3-5/16”
C
B
Fig. 3-3
3
3. Installing the indoor unit
3.4. Branch duct hole and fresh air intake hole (Fig. 3-4)
At the time of installation, use the duct holes (cut out) located at the positions shown
in following diagram, as and when required.
• A fresh air intake hole for the optional multi function casement can also be made.
Note:
The figure marked with * in the drawing represent the dimensions of the main
unit excluding those of the optional multi function casement.
When installing the optional multi function casement, add 135 mm, 5-5/16 inch
to the dimensions marked on the figure.
(inch)
C
K
L
M
120°
B
A
A
N
O
When installing the branch ducts, be sure to insulate adequately. Otherwise
condensation and dripping may occur.
E
D
ABranch duct hole
Iø150 mm, ø5-29/32 inch cut out hole
Jø175 mm, ø6-7/8 inch burring hole pitch
KFresh air intake hole diagram
L3-ø2.8 mm, ø1/8 inch burring hole
Mø125 mm, ø4-29/32 inch burring hole pitch
Nø100 mm, ø3-15/16 inch cut out hole
OCeiling
F
G
3-15/16 3-17/32
3-17/32 3-15/16
BIndoor unit
CFresh air intake hole
DDrain pipe
ERefrigerant pipe
FBranch duct hole diagram (view from
either side)
GCut out hole
H
13-25/32
J
H14-ø2.8 mm, ø1/8 inch burring hole
I
Fig. 3-4
3.5. Suspension structure (Give site of suspension
(inch)
AUnit
strong structure) (Fig. 3-5)
BGrille
A
• The ceiling work differs according to the construction of the building. Building con-
structors and interior decorators should be consulted for details.
(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and the
ceiling foundation (framework: wooden slats and slat holders) must be reinforced
in order to protect the ceiling from vibration.
CPillar
C
B
2
1
J
(2) Cut and remove the ceiling foundation.
(3) Reinforce the ends of the ceiling foundation where it has been cut and add ceiling
foundation for securing the ends of the ceiling board.
(4) When installing the indoor unit on a slanting ceiling, attach a pillar between the
ceiling and the grille and set so that the unit is installed horizontally.
H
I
1 Wooden structures
• Use tie beams (single storied houses) or second floor beams (two story houses) as
reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their sides
must be at least 6 cm, 2-3/8 inch long if the beams are separated by not more than
90 cm, 35-7/16 inch and their sides must be at least 9 cm, 3-9/16 inch long if the
beams are separated by as much as 180 cm, 70-7/18 inch.The size of the suspen-
sion bolts should be ø10 (3/8”). (The bolts do not come with the unit.)
G
F
D
E
DCeiling
ERafter
FBeam
HUse inserts rated at 100-150 kg,
250-350 lbs each (procure locally)
ISuspension bolts M10 (3/8”) (procure
locally)
GRoof beam
JSteel reinforcing rod
2 Ferro-concrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
Fig. 3-5
ASuspension bolt
A
(inch)
3.6. Unit suspension procedures (Fig. 3-6)
Suspend the main unit as shown in the diagram.
Figures given in parentheses represent the dimensions in case of installing optional
multi function casement.
1. In advance, set the parts onto the suspension bolts in the order of the washers
(with insulation), washers (without insulation) and nuts (double).
• Fit the washer with cushion so that the insulation faces downward.
• In case of using upper washers to suspend the main unit, the lower washers (with
insulation) and nuts (double) are to be set later.
BCeiling
CNut
DWasher (with insulation)
B
EMounting plate
FWasher (without insulation)
GCheck using the Installation gauge
A
A
C
D
2. Lift the unit to the proper height of the suspension bolts to insert the mounting
plate between washers and then fasten it securely.
3. When the main unit can not be aligned against the mounting hole on the ceiling, it
is adjustable owing to a slot provided on the mounting plate.
• Make sure that step A is performed within 17-22 mm, 11/16-7/8 inch. Damage
could result by failing to adhere to this range. (Fig. 3-7)
E
Min. 1-3/16
B
C
F
C
G
D
AMain unit
Caution:
B
BCeiling
Use the top half of the box as a protective cover to prevent dust or debris from
getting inside the unit prior to installation of the decorative cover or when ap-
plying ceiling materials.
CGauge
DCeiling opening dimensions
Fig. 3-6
Fig. 3-7
3.7. Confirming the position of main unit and tighten-
ing the suspension bolts (Fig. 3-8)
• Using the gauge attached to the grille, ensure that the bottom of the main unit is
properly aligned with the opening of the ceiling. Be sure to confirm this, otherwise
condensation may form and drip due to air leakage etc.
A
AMain unit
• Confirm that the main unit is horizontally levelled, using a level or a vinyl tube filled
with water.
• After checking the position of the main unit, tighten the nuts of the suspension bolts
securely to fasten the main unit.
• The installation template (top of the package) can be used as a protective sheet to
prevent dust from entering the main unit when the grilles are left unattached for a while
or when the ceiling materials are to be lined after installation of the unit is finished.
* As for the details of fitting, refer to the instructions given on the Installation template.
BCeiling
CInstallation template (top of the
package)
B
C
DScrew with washer (Accessory)
D
Fig. 3-8
4
4. Installing the refrigerant piping
4.1. Precautions
4.1.1. For devices that use R410A refrigerant
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
specified in the table to the below. Make sure the insides of the pipes are
clean and do not contain any harmful contaminants such as sulfuric com-
pounds, oxidants, debris, or dust.
Warning:
When installing or moving the air conditioner, use only the specified refriger-
ant (R410A) to charge the refrigerant lines. Do not mix it with any other refriger-
ant and do not allow air to remain in the lines. Air enclosed in the lines can
cause pressure peaks resulting in a rupture and other hazards.
A12, A18
ø6.35 mm, ø1/4 inch
thickness 0.8 mm, 1/32 inch
A24, A30, A36, A42
ø9.52 mm, ø3/8 inch
thickness 0.8 mm, 1/32 inch
Liquid pipe
Gas pipe
ø12.7 mm, ø1/2 inch
thickness 0.8 mm, 1/32 inch
ø15.88 mm, ø5/8 inch
thickness 1.0 mm, 3/64 inch
• Do not use pipes thinner than those specified above.
4.2. Connecting pipes (Fig. 4-1)
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100 °C, 212 °F or
more, thickness of 12 mm, 1/2 inch or more).
(inch)
B
A
45° 2°
C
• The indoor parts of the drain pipe should be wrapped with polyethylene foam insu-
lation materials (specific gravity of 0.03, thickness of 9 mm, 23/64 inch or more).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening
flare nut.
D
• Use two wrenches to tighten piping connections.
• Use refrigerant piping insulation provided to insulate indoor unit connections. Insu-
late carefully.
Fig. 4-1
B
Flare nut tightening torque
Copper pipe O.D.
(mm, inch)
ø6.35, 1/4”
ø9.52, 3/8”
ø12.7, 1/2”
Flare nut O.D.
(mm, inch)
17, 43/64
Tightening torque
(N·m, ft·lbs)
14 - 18, 10 -13
A
Flare cutting dimensions
Copper pipe O.D.
(mm, inch)
Flare dimensions
øA dimensions (mm, inch)
8.7 - 9.1, 11/32 - 23/64
12.8 - 13.2, 1/2 - 33/64
16.2 - 16.6, 41/64 - 21/32
19.3 - 19.7, 49/64 - 25/32
22
34 - 42
49 - 61
68 - 82
, 7/8
, 25 - 30
, 35 - 44
, 49 - 59
ø6.35, 1/4”
26
29
, 1-3/64
, 1-9/64
ø9.52, 3/8”
ø15.88, 5/8”
ø12.7, 1/2”
CApply refrigerating machine oil over the entire flare seat surface.
ø15.88, 5/8”
DUse correct flare nuts meeting the pipe size of the outdoor unit.
Available pipe size
A12, A18
A24, A30, A36, A42
ø6.35
–
ø9.52
–
ø15.88
–
Liquid side
Gas side
–
ø12.7
–
–
? : Factory flare nut attachment to the heat-exchanger.
5
4. Installing the refrigerant piping
ARefrigerant pipe and insulating ma-
terial
4.3. Indoor unit (Fig. 4-2)
Heat insulation for refrigerant pipes:
A
BPipe cover (large)
CPipe cover (small)
DRefrigerant pipe (gas)
ERefrigerant pipe (liquid)
FBand
1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that
the end of the pipe cover touches the side of the unit.
2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure
that the end of the pipe cover touches the side of the unit.
3 Secure both ends of each pipe cover with the enclosed bands. (Attach the bands
20 mm from the ends of the pipe cover.)
• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe
connections for gas leakage with nitrogen gas. (Check that there is no refrigerant
leakage from the refrigerant piping to the indoor unit.)
GCross-sectional view of connection
HPipe
IInsulating material
JSqueeze
D
B
G
E
C
F
4.4. For twin/triple combination
Refer to the outdoor unit installation manual.
F
B,C
J
I
H
Fig. 4-2
5. Drainage piping work
5.1. Drainage piping work (Fig. 5-1)
• Use VP25 (O.D. ø32 mm, 1-1/4 inch PVC TUBE) for drain piping and provide 1/100
or more downward slope.
Max. 65ft
5 to 7ft
C
• Be sure to connect the piping joints using a polyvinyl type adhesive.
• Observe the figure for piping work.
• Use the included drain hose to change the extraction direction.
Max. 6inch
A
B
1 Correct piping
2 Wrong piping
AInsulation (9 mm, 3/8 inch or more)
BDownward slope (1/100 or more)
CSupport metal
KAir bleeder
LRaised
MOdor trap
J
F
Grouped piping
K
DO.D. ø32 mm, 1-1/4 inch PVC TUBE
EMake it as large as possible
FIndoor unit
IO.D. ø38 mm, 1-1/2 inch PVC TUBE for
grouped piping.
(9 mm, 3/8 inch or more insulation)
L
GMake the piping size large for grouped piping. JUp to 85 cm, 33-7/16 inch
HDownward slope (1/100 or more)
B
M
D
E
D
D
F
F
F
G
H
I
Fig. 5-1
(inch)
1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 5-2)
(Affix the tube using PVC adhesive then secure it with a band.)
2. Install a locally purchased drain pipe (PVC pipe, O.D. ø32 mm, 1-1/4 inch).
(Affix the pipe using PVC adhesive then secure it with a band.)
3. Insulate the tube and pipe. (PVC pipe, O.D. ø32 mm, 1-1/4 inch and socket)
4. Check that drain flows smoothly.
A
B
C
K
F
G
C
J
5. Insulate the drain port with insulating material, then secure the material with a
band. (Both insulating material and band are supplied with the unit.)
7/16
1
1
1
I
H
C
D E E
AUnit
GDrain pipe
BInsulating material
CBand
(O.D. ø32 mm, 1-1/4 inch PVC TUBE)
HInsulating material (purchased locally)
ITransparent PVC pipe
JO.D. ø32 mm, 1-1/4 inch PVC TUBE
(Slope 1/100 or more)
DDrain port (transparent)
EInsertion margin
FMatching
Fig. 5-2
KDrain socket
6
6. Electrical work
G
6.1. Indoor unit (Fig. 6-1)
F
A
1. Remove the two electrical wiring service panels.
B
C
2. Wire the power cable and control cable separately through the respective wiring
entries given in the diagram.
S1
S2 S3
L1
L2 GR
• Do not allow slackening of the terminal screws.
• Leave excess cable so that the electrical box can be suspended below the unit
during servicing. (Approx. 50 to 100 mm, 2 to 4 inch)
E
D
AEntry for control cable
BEntry for power
CClamp
1
2
H
DService panel for indoor controller switch setting
EService panel for electrical wiring
FPower supply terminals (separate indoor/outdoor unit power supplies,
K-control application)
J,K
GIndoor / Outdoor unit connecting terminals
HRemote controller connector
I
ISecure with the clamp
JIntake sensor
KHolder
Fig. 6-1
6.1.1. Indoor unit power supplied from outdoor unit (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
C
F
L1
DIndoor unit/outdoor unit connecting cords
ERemote controller
L2
A B
GR
D
S1
S2
S3
S1
S2
S3
FIndoor unit
GIndoor unit earth
1
2
E
G
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
F F
C
L1
DIndoor unit/outdoor unit connecting cords
ERemote controller
L2
A B
GR
D
G
S1
S2
S3
S1
S2
S3
S1
S2
S3
FIndoor unit
GIndoor unit earth
1
2
1
2
E
G
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
PLA-A12, 18, 24, 30
PLA-A36, 42
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit
–
1A
15A
–
–
–
2A
15A
–
–
*1
3 × AWG16 (polar)
1 × Min. AWG16
2 × AWG22 (Non-polar)
–
3 × AWG16 (polar)
1 × Min. AWG16
2 × AWG22 (Non-polar)
–
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*2
*3
*3
*3
*3
AC 208/230 V
DC24 V
DC12 V
AC 208/230 V
DC24 V
DC12 V
*1. Max. 50 m, 165 ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*3. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.
4. Install an earth longer than other cables.
7
6. Electrical work
6.1.2. Separate indoor unit/outdoor unit power supplies (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
F
L1
L2
GR
C
L1
L2
GR
DIndoor unit/outdoor unit connecting cords
ERemote controller
G
B
B
A
FIndoor unit
GIndoor unit power supply
S1
S2
S3
S1
S2
S3
D
1
2
E
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
C
L1
L2
GR
F F
L1
L2
GR
L1
L2
GR
DIndoor unit/outdoor unit connecting cords
ERemote controller
G
B
A B
S1
S2
S3
S1
S2
S3
S1
S2
S3
FIndoor unit
GIndoor unit power supply
D
1
2
1
2
E
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
If the indoor and outdoor units have separate power supplies, refer to the table at the
below. Change the indoor unit electrical box wiring refering to the figure in the right
and the DIP switch settings of the outdoor unit control board.
If the indoor and
Connectors (connections when shipped
from the factory are for indoor unit power
supplied from outdoor unit)
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
Indoor unit specifications
Indoor unit electrical box connector con-
nection change
L1
Required
L2
GR
ORANGE
CND
figure.
Label affixed near each wiring diagram
Required
for the indoor and outdoor units
Indoor unit
control board
S1
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only)
S2
ON
OFF
3
S3
Connectors
Indoor unit power supplied from outdoor unit
(when shipped from factory)
(SW8)
L1
L2
1
2
GR
ORANGE
CND
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to
the units according to the wiring method.
Indoor unit
control board
S1
S2
S3
Separate indoor unit/outdoor unit power
supplies
Indoor unit model
PLA-A12, 18, 24, 30
PLA-A36, 42
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit
Single 208/230 V, 60 Hz
Single 208/230 V, 60 Hz
1 A
15A
2A
15A
2 × Min. AWG16
1 × Min. AWG16
2 × AWG22 (polar)
–
2 × Min. AWG16
1 × Min. AWG16
2 × AWG22 (polar)
–
*1
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*2
*3
*3
*3
*3
2 × AWG22 (Non-polar)
AC 208/230 V
–
2 × AWG22 (Non-polar)
AC 208/230 V
–
DC24 V
DC12 V
DC24 V
DC12 V
*1. Max. 50 m, 165 ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*3. The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cables.
4. Install an earth longer than other cables.
8
6. Electrical work
6.1.3. K-control application
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
AOutdoor unit power supply
<For heat pump models>
<For cooling only models>
BWiring circuit breaker or isolating switch
COutdoor unit
F
L1
L2
GR
G
L1
L2
GR
C
L1
L2
GR
C
L1
L2
DIndoor unit/outdoor unit connecting cords
ERemote controller
H
H
B
B
B
B
A
A
GR
FIndoor unit <For heat pump models>
GIndoor unit <For cooling only models>
HIndoor unit power supply
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
D
D
1
2
1
2
E
E
Set the DIP switch of the indoor
unit control board.
Set the DIP switch of the indoor
unit control board.
SW5
1
SW5
2
1
2
3
3
SW5–1 : ON SW5–2, 3 : OFF
SW5–1, 2 : ON SW5–3 : OFF
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
AOutdoor unit power supply
<For heat pump models>
<For cooling only models>
BWiring circuit breaker or isolating switch
COutdoor unit
C
L1
F G
C
L1
J K
L1
L2
GR
L1
L2
GR
L1
L2
GR
L1
L2
GR
DIndoor unit/outdoor unit connecting cords
ERemote controller
H
B
H
B
L2
L2
A B
A B
GR
GR
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
FMain indoor unit <For heat pump models>
GSub indoor unit <For heat pump models>
HIndoor unit power supply
D
D
1
2
1
2
1
2
1
2
E
E
JMain indoor unit <For cooling only models
>
>
KSub indoor unit <For cooling only models
Set the DIP switch of the indoor
unit control board.
Set the DIP switch of the indoor
unit control board.
G
H
K
L
Main indoor
Sub indoor
Main indoor
Sub indoor
3
2
2 3
1
1
1
1
2
3
2
3
SW5
SW5
SW5–1 : ON
SW5–2 : OFF
SW5–3 : OFF
SW5–1 : ON
SW5–2 : OFF
SW5–3 : ON
SW5–1 : ON
SW5–2 : ON
SW5–3 : OFF
SW5–1 : ON
SW5–2 : ON
SW5–3 : ON
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
To change to K-control, set the DIP switch (SW5) of the indoor unit control board as
shown in the above figure and change the electric wiring of the indoor unit as shown
in the right figure.
L1
L2
Connectors
Set up Dip switch after turning off Power supply switch.
GR
Be careful that setting the DIP switch (SW5) of the indoor unit control board varies
between the heat pump models and cooling models of the outdoor unit.
ORANGE
CND
DIP switch (SW5)
S1
S2
S3
OFF
A–CONTROL
heat pump models
MAIN
ON
K–CONTROL
cooling only models
SUB
INDOOR UNIT
CONTROL BOARD
SW5–1
SW5–2
SW5–3
Dip switch SW5-2 and SW5-3 is effective only
when Dip switch SW5-1 (K-CONTROL) is ON.
BLUE
CN3C
}
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to
BLACK
CN30
the units according to the wiring method.
PLA-A12, 18, 24, 30
Single 208/230 V, 60 Hz
1 A
PLA-A36, 42
Single 208/230 V, 60 Hz
2A
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
To change to the K-control,
make sure to change the
connectors as shown in the
figure.
15A
15A
L1
L2
2 × Min. AWG16
1 × Min. AWG16
H/P: 3 × AWG22 (polar)
C/O: 2 × AWG22 (polar)
2 × Min. AWG16
1 × Min. AWG16
H/P: 3 × AWG22 (polar)
C/O: 2 × AWG22 (polar)
Indoor unit power supply earth
GR
Indoor unit-Outdoor unit
*1
ORANGE
CND
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S1-S3
Remote controller-Indoor unit
–
2 × AWG22 (Non-polar)
AC 208/230 V
DC12V
–
2 × AWG22 (Non-polar)
AC 208/230 V
DC12V
S1
S2
S3
*2
*3
*3
*3
*3
INDOOR UNIT
CONTROL BOARD
BLUE
CN3C
DC12V
DC12V
DC12V
DC12V
*1. Max. 50 m, 165 ft
BLACK
CN30
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*3. The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cables.
4. Install an earth longer than other cables.
9
6. Electrical work
B
6.2. Remote controller
6.2.1. For wired remote controller
1) Installing procedures
A
(inch)
(1) Select an installing position for the remote controller. (Fig. 6-2)
The temperature sensors are located on both remote controller and indoor unit.
s Procure the following parts locally:
Two piece switch box
1-3/16
1-3/16
D
C
1-37/64
A
E
Thin copper conduit tube
Lock nuts and bushings
F
ARemote controller profile
I
G
BRequired clearances surrounding the remote controller
CInstallation pitch
C
H
(2) Seal the service entrance for the remote controller cord with putty to prevent pos-
sible invasion of dew drops, water, cockroaches or worms. (Fig. 6-3)
AFor installation in the switch box:
Fig. 6-2
BFor direct installation on the wall select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run
the remote controller cord from the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out upper case, then seal the cut-
out notch with putty similarly as above.
B-1. To lead the remote controller cord from the back of the controller:
B-2. To run the remote controller cord through the upper portion:
(3) For direct installation on the wall
B-1.
B-2.
B
H
H
I
J
I
CWall
DConduit
ELock nut
FBushing
GSwitch box
Fig. 6-3
Fig. 6-4
HRemote controller cord
ISeal with putty
A
JWood screw
2) Connecting procedures (Fig. 6-4)
1 Connect the remote controller cord to the terminal block.
ATo TB5 on the indoor unit
BTB6 (No polarity)
3) Two remote controllers setting
AB
TB6
If two remote controllers are connected, set one to “Main” and the other to “Sub”. For
setting procedures, refer to “Function selection of remote controller” in the operation
manual for the indoor unit.
B
6.2.2. For wireless remote controller
1) Installation area
1
• Area in which the remote controller is not exposed to direct sunshine.
• Area in which there is no nearby heating source.
• Area in which the remote controller is not exposed to cold (or hot) winds.
• Area in which the remote controller can be operated easily.
• Area in which the remote controller is beyond the reach of children.
2) Installation method (Fig. 6-5)
1 Attach the remote controller holder to the desired location using two tapping screws.
2 Place the lower end of the controller into the holder.
ARemote controller
MODEL SELECT
C
A
B
ON/OFF
TEMP
A
3
2
FAN
AUTO STOP
MODE VANE
CHECK LOUVER
TEST RUN
AUTO START
h
BWall
CDisplay panel
min
DReceiver
SET
RESET
CLOCK
• The signal can travel up to approximately 7 meters, 23 ft (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
3) Setting (Fig. 6-6)
2,4
D
1 Insert batteries.
Fig. 6-5
2 Press the SET button with something sharp at the end.
Fig. 6-6
blinks and Model No. is lighted.
3 Press the temp
button to set the Model No.
4 Press the SET button with something sharp at the end.
and Model No. are lighted for three seconds, then turned off.
Indoor
Outdoor
AModel No.
heat pump models
cooling only models
heat pump models
cooling only models
001
033
003
035
PLA, PCA, PKA (A12, A18)
PKA (A24, A30, A36)
10
6. Electrical work
4) Assigning a remote controller to each unit (Fig. 6-7)
Each unit can be operated only by the assigned remote controller.
Make sure each pair of an indoor unit PC board and a remote controller is assigned
to the same pair No.
A
MODEL SELECT
5) Wireless remote controller pair number setting operation
1 Press the SET button with something sharp at the end.
Start this operation from the status of remote controller display turned off.
ON/OFF
TEMP
blinks and Model No. is lighted.
3
2
min
2 Press the
Pair No. “0” blinks.
3 Press the temp
button twice continuously.
FAN
MODE VANE
CHECK LOUVER
TEST RUN
AUTO STOP
AUTO START
h
button to set the pair number you want to set.
4 Press the SET button with something sharp at the end.
Set pair number is lighted for three seconds then turned off.
min
SET
RESET
CLOCK
APair No. of wireless remote controller
Indoor PC board
1,4
0
1
Factory setting
Cut J41
2
Cut J42
3–9
Cut J41, J42
Fig. 6-7
6.3. Function settings
3
2
4
6.3.1. Function setting on the unit (Selecting the unit functions)
1) For wired remote controller (Fig. 6-8)
Changing the power voltage setting
• Be sure to change the power voltage setting depending on the voltage used.
1 Go to the function setting mode.
1
⁄ Mode number
2
⁄ Setting number
3
⁄ Refrigerant address
4
⁄ Unit number
1
TEMP.
ON/OFF
Switch OFF the remote controller.
F
MENU
ON/OFF
DAY
CLOCK
FILTER
CHECK TEST
CLEAR
Press the Aand Bbuttons simultaneously and hold them for at least 2
seconds. FUNCTION will start to flash.
A
B
E
G
BACK
MONITOR/SET
PAR-21MAA
OPERATION
2 Use the Cbutton to set the refrigerant address (3) to 00.
3 Press Dand [--] will start to flash in the unit number (4) display.
4 Use the Cbutton to set the unit number (4) to 00.
5 Press the EMODE button to designate the refrigerant address/unit number. [--]
will flash in the mode number (1) display momentarily.
6 Press the Fbuttons to set the mode number (1) to 04.
7 Press the Gbutton and the current set setting number (2) will flash.
Use the Fbutton to switch the setting number in response to the power supply
voltage to be used.
C
D
4
Power supply voltage
1
2
230 V
208 V
:
:
setting number = 1
setting number = 2
1
8 Press the MODE button Eand mode and the setting number (1) and (2) will
change to being on constantly and the contents of the setting can be confirmed.
9 Press the FILTER Aand TEST RUN Bbuttons simultaneously for at least two
seconds. The function selection screen will disappear momentarily and the air
conditioner OFF display will appear.
Fig. 6-8
2) For wireless remote controller (Fig. 6-9)
Changing the power voltage setting
• Be sure to change the power voltage setting depending on the voltage used.
1
2
CHECK
CHECK
CHECK
1 Go to the function select mode
CHECK
Press the
button Ftwice continuously.
(Start this operation from the status of remote controller display turned off.)
is lighted and “00” blinks.
CHECK
ON/OFF
TEMP
Press the temp
button Conce to set “50”. Direct the wireless remote controller
E
F
h
3
4
toward the receiver of the indoor unit and press the
2 Setting the unit number
Press the temp
button A.
C,D
CHECK
CHECK
FAN
AUTO STOP
AUTO START
h
button Cand Dto set the unit number “00”. Direct the wireless
MODE VANE
CHECK LOUVER
TEST RUN
min
remote controller toward the receiver of the indoor unit and press the
3 Selecting a mode
Enter 04 to change the power voltage setting using the Cand Dbuttons.
button B.
A
B
min
Direct the wireless remote controller toward the receiver of the indoor unit and press
SET
RESET
CLOCK
h
the
button A.
Current setting number:
1 = 1 beep (one second)
2 = 2 beeps (one second each)
3 = 3 beeps (one second each)
4 Selecting the setting number
Fig. 6-9
Use the Cand Dbuttons to change the power voltage setting to 01 (240 V).
Direct the wireless remote controller toward the sensor of the indoor unit and press
h
the
button A.
5 To select multiple functions continuously
Repeat steps 3 and 4 to change multiple function settings continuously.
6 Complete function selection
Direct the wireless remote controller toward the sensor of the indoor unit and press
the
button E.
Note:
Whenever changes are made to the function settings after installation or main-
tenance, be sure to record the changes with a mark in the “Setting” column of
the Function table.
6.3.2. Function setting on the remote controller
Refer to the indoor unit operation manual.
11
6. Electrical work
Function table
Select unit number 00
Mode no.
01
Setting no. Initial setting
setting
Mode
Settings
Not available
Available
1
2
1
2
3
1
2
3
1
2
1
2
Power failure automatic recovery
*1
Indoor temperature detecting
LOSSNAY connectivity
Indoor unit operating average
Set by indoor unit’s remote controller
Remote controller’s internal sensor
Not Supported
Supported (indoor unit is not equipped with outdoor-air intake)
Supported (indoor unit is equipped with outdoor-air intake)
230 V
02
03
Power voltage
04
05
208 V
Auto mode (only for PUZ)
Energy saving cycle automatically enabled
Energy saving cycle automatically disabled
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])
Mode no.
07
Setting no. Initial setting
setting
Mode
Filter sign
Settings
100Hr
2500Hr
1
2
3
1
2
3
1
2
3
1
2
1
2
3
1
2
No filter sign indicator
Standard (PLA)/Silent (PCA)
1
Fan speed
08
High ceiling
High ceiling
4 directions
3 directions
2 directions
(PLA)/Standard (PCA)
(PLA)/High ceiling (PCA)
2
No. of air outlets
09
10
11
12
Installed options (high-performance filter)
Up/down vane setting
Not supported
Supported
Equipped with vanes (vanes angle setup 3)
Equipped with vanes (vanes angle setup 1)
Equipped with vanes (vanes angle setup 2)
Disabled
Energy saving air flow
(Heating mode)
Enabled
*1 When the power supply returns, the air conditioner will start 3 minutes later.
7. Test run
7.1. Before test run
s After completing installation and the wiring and piping of the indoor and outdoor
units, check for refrigerant leakage, looseness in the power supply or control
wiring, wrong polarity, and no disconnection of one phase in the supply.
s Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0 MΩ.
s Do not carry out this test on the control wiring (low voltage circuit) termi-
nals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ.
Insulation resistance
D B
AON/OFF button
F E
7.2. Test run
The following 3 methods are available.
BTest run display
CIndoor temperature liquid line
7.2.1. Using wired remote controller (Fig. 7-1)
1 Turn on the power at least 12 hours before the test run.
2 Press the [TEST] button twice. ➡ “TEST RUN” liquid crystal display
3 Press the [Mode selection] button. ➡ Make sure that wind is blown out.
4 Press the [Mode selection] button and switch to the cooling (or heating) mode.
➡ Make sure that cold (or warm) wind is blown out.
5 Press the [Fan speed] button. ➡ Make sure that the wind speed is switched.
6 Check operation of the outdoor unit fan.
7 Release test run by pressing the [ON/OFF] button. ➡ Stop
8 Register a telephone number.
temperature display
DON/OFF lamp
EPower display
FError code display
TEST RUN
COOL, HEAT
˚C
C
˚C
TEMP.
SIMPLE
Test run remaining time dis-
play
ON/OFF
A
MENU
ON/OFF
DAY
FILTER
GSet temperature button
HMode selection button
IFan speed button
MTEST button
BACK
MONITOR/SET
CHECK TEST
CLEAR
PAR-21MAA
CLOCK
OPERATION
The telephone number of the repair shop, sales office, etc., to contact if an error
occurs can be registered in the remote controller. The telephone number will be
displayed when an error occurs. For registration procedures, refer to the opera-
tion manual for the indoor unit.
H G
I M
Fig. 7-1
A
7.2.2. Using wireless remote controller (Fig. 7-2)
1 Turn on the power to the unit at least 12 hours before the test run.
TEST RUN
2 Press the
button twice continuously.
TEST RUN
(Start this operation from the status of remote controller display turned off.)
A
and current operation mode are displayed.
MODE
3 Press the
button to activate
mode, then check whether
mode, then check whether
ON/OFF
TEMP
cool air is blown out from the unit.
7
MODE
4 Press the
button to activate
warm air is blown out from the unit.
FAN
AUTO STOP
FAN
5
6
5 Press the
button and check whether fan speed changes.
MODE VANE
CHECK LOUVER
TEST RUN
AUTO START
h
3,4
VANE
6 Press the
button and check whether the auto vane operates properly.
7 Press the ON/OFF button to stop the test run.
min
2
SET
RESET
CLOCK
Note:
• Point the remote controller towards the indoor unit receiver while following
steps 2 to 7.
• It is not possible to run the in FAN, DRY or AUTO mode.
Fig. 7-2
12
7. Test run
7.2.3. Using SW4 in outdoor unit
Refer to the outdoor unit installation manual.
B
A B
E D
7.3. Self-check
7.3.1. Wired remote controller (Fig. 7-3)
1 Turn on the power.
CHECK
2 Press the [CHECK] button twice.
3 Set refrigerant address with [TEMP] button if system control is used.
4 Press the [ON/OFF] button to stop the self-check.
ACHECK button
ERROR CODE
TEMP.
ON/OFF
ON/OFF
TEMP
C
MENU
ON/OFF
DAY
CLOCK
FILTER
BRefrigerant address
4
2
BACK
MONITOR/SET
CHECK TEST
CLEAR
CTEMP. button
PAR-21MAA
OPERATION
DIC: Indoor unit
OC: Outdoor unit
FAN
MODE VANE
CHECK LOUVER
TEST RUN
AUTO STOP
AUTO START
h
ECheck code
A
FUnit address
3
min
7.3.2. Wireless remote controller (Fig. 7-4)
ERROR CODE
SET
RESET
CLOCK
1 Turn on the power.
CHECK
2 Press the
button twice.
B
E
(Start this operation from the status of remote controller display turned off.)
A
begins to light.
B“00” begins to blink.
ERROR CODE
h
Fig. 7-4
3 While pointing the remote controller toward the unit’s receiver, press the
button. The check code will be indicated by the number of times that the buzzer
sounds from the receiver section and the number of blinks of the operation lamp.
4 Press the ON/OFF button to stop the self-check.
F
Fig. 7-3
• Refer to the following tables for details on the check codes. (Wireless remote controller)
[Output pattern A]
Beeper sounds
Beep
Beep Beep Beep
Beep
nth
Beep
1st
Beep
OPERATION
INDICATOR
lamp flash
pattern
1st
2nd
3rd
2nd · · · Repeated
Off
On
On
On
Off
On
On
On
0.5 sec.
Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
Approx. 2.5 sec. 0.5 sec. 0.5 sec.
Self-check
starts
(Start signal
received)
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of flashes/beeps in pattern indicates
the check code in the following table
[Output pattern B]
Beeper sounds
Beep
Beep Beep Beep
Beep
nth
Beep
1st
Beep
OPERATION
INDICATOR
lamp flash
pattern
1st
2nd
3rd
2nd · · · Repeated
Off
On
On
On
On
On
Off
On
On
On
Approx. 2.5 sec.
Approx. 3 sec.
0.5 sec. 0.5 sec. 0.5 sec.
0.5 sec. Approx. 2.5 sec.
Approx. 3 sec.
0.5 sec. 0.5 sec.
Self-check
starts
(Start signal
received)
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of flashes/beeps in pattern indicates
the check code in the following table
[Output pattern A] Errors detected by indoor unit
Wired remote
Wireless remote controller
controller
Beeper sounds/OPERATION
Symptom
Remark
INDICATOR lamp flashes
Check code
(Number of times)
1
P1
Intake sensor error
2
P2, P9
E6, E7
P4
Pipe (Liquid or 2-phase pipe) sensor error
Indoor/outdoor unit communication error
Drain sensor error
3
4
5
P5
Drain pump error
6
P6
Freezing/Overheating safeguard operation
Communication error between indoor and outdoor units
Pipe temperature error
7
EE
P8
8
9
10
E4
Remote controller signal receiving error
–
–
11
–
–
12
Fb
Indoor unit control system error (memory error, etc.)
No corresponding
No sound
– –
13
7. Test run
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wired remote
Wireless remote controller
controller
Beeper sounds/OPERATION
Symptom
Remark
INDICATOR lamp flashes
Check code
E9
(Number of times)
1
2
Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
Compressor overcurrent interruption
UP
3
U3, U4
UF
Open/short of outdoor unit thermistors
4
Compressor overcurrent interruption (When compressor locked)
Abnormal high discharging temperature/49C worked/insufficient refrigerant
Abnormal high pressure (63H worked)/Overheating safeguard operation
Abnormal temperature of heat sink
5
U2
6
U1, Ud
U5
7
For details, check the LED display
of the outdoor controller board.
8
U8
Outdoor unit fan safeguard stop
9
U6
Compressor overcurrent interruption/Abnormal of power module
Abnormality of super heat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal synchronous
signal to main circuit/Current sensor error
10
11
U7
U9, UH
12
13
14
–
–
–
–
Others
Other errors (Refer to the technical manual for the outdoor unit.)
*1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on,
there are no error records.
*2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm the self-check start signal was received, the
specified refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Cause
Wired remote controller
LED 1, 2 (PCB in outdoor unit)
• For about 2 minutes following power-on, operation of the
remote controller is not possible due to system start-up.(Cor-
rect operation)
For about 2
minutes following
power-on
After LED 1, 2 are lighted, LED 2 is turned off,
then only LED 1 is lighted.(Correct operation)
PLEASE WAIT
• Connector for the outdoor unit’s protection device is not con-
nected.
• Reverse or open phase wiring for the outdoor unit’s power
terminal block (L1, L2, GR)
PLEASE WAIT → Error code
Only LED 1 is lighted. → LED 1, 2 blink.
After about 2
minutes has
expired following
power-on
• Incorrect wiring between indoor and outdoor units (incorrect
polarity of S1, S2, S3)
Display messages do not appear even
when operation switch is turned ON
(operation lamp does not light up).
Only LED 1 is lighted. → LED 1 blinks twice,
LED 2 blinks once.
• Remote controller wire short
On the wireless remote controller with condition above, following phenomena takes place.
• No signals from the remote controller are accepted.
• OPE lamp is blinking.
• The buzzer makes a short pipng sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer)
LED 2 (power for remote controller)
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the remote controller. This LED lights only in the case of the
indoor unit which is connected to the outdoor unit refrigerant address “0”.
LED 3 (communication between indoor and outdoor units only
A-control)
Indicates state of communication between the indoor and outdoor units. Make sure that this LED is
always blinking.
7.4. Check of drainage (Fig. 7-5)
• During the test run, ensure the water is being properly drained out and that no
water is leaking from joints.
A
B
• Always check this during installation even if the unit is not required to provide cool-
ing/drying at that time.
• Similarly, check the drainage before finishing ceiling installation in a new premises.
(1) Remove the cover of the water supply inlet and add about 1000 cc, 1/4 gal of
water using a water supply pump etc. During this process, be careful not to spray
water into the drain pump mechanism.
AInsert the pump end 3 to 5 cm,
C
1-3/16 to 2 inch
BCover of water supply inlet
CAbout 1000 cc, 1/4 gal
DWater
D
E
(2) Confirm that water is being drained out through the drainage outlet, after switch-
ing over from remote control mode to test run mode.
EDrain plug
(3) After checking the drainage, ensure that the cover is replaced and the power
supply is isolated.
(4) After confirming the drainage system is functioning, replace the drain plug.
Fig. 7-5
14
8. System control
Refer to the outdoor unit installation manual.
9. Installing the grille
9.1. Checking the contents (Fig. 9-1)
• This kit contains this manual and the following parts.
1
Accessory name
Q’ty
1
Remark
950 × 950 (mm), 37 - 3/8 × 37 - 3/8 inch
M5 × 0.8 × 25
2
3
5
1
2
3
4
5
6
Grille
Screw with captive washer
Gauge
4
1
(Divided into four parts)
Fastener
2
4
6
Screw
4
4 × 8
for PLP-42AAMD
Wired remote controller
1
Fig. 9-1
A
9.2. Preparing to attach the grille (Fig. 9-2)
• With the gauge 3 supplied with this kit, adjust and check the positioning of the unit
relative to the ceiling. If the unit is not properly positioned relative to the ceiling, it
may allow air leaks or cause condensation to collect.
• Make sure that the opening in the ceiling is within the following tolerances:
860 × 860 - 910 × 910 mm, 33 - 7/8 × 33 - 7/8 to 35 - 13/16 × 35 - 13/16 inch.
• Make sure that step A is performed within 17-22 mm, 11/16-7/8 inch. Damage
could result by failing to adhere to this range.
B
D
C
Fig. 9-2
AMain unit
A
B
BCeiling
CGauge 3 (inserted into the unit)
E
1
1
DCeiling opening dimensions
2
9.2.1. Removing the intake grille (Fig. 9-3)
C
• Slide the levers in the direction indicated by the arrow 1 to open the intake grille.
• Unlatch the hook that secures the grille.
D
* Do not unlatch the hook for the intake grille.
• With the intake grille in the “open” position, remove the hinge of the intake grille
from the grille as indicated by the arrow 2.
Fig. 9-3
G
B
9.2.2. Removing the corner panel (Fig. 9-4)
F
F
• Remove the screw from the corner of the corner panel. Slide the corner panel as
1
indicated by the arrow 1 to remove the corner panel.
AIntake grille
BGrille
EHole for the grille’s hook
FCorner panel
GScrew
CIntake grille levers
DGrille hook
Fig. 9-4
9.3. Selection of the air outlets
4-directional
3-directional
For this grille the discharge direction is available in 11 patterns. Also, by setting the
Remote controller to the appropriate settings, you can adjust the air-flow and speed.
Select the required settings from the Table according to the location in which you
want to install the unit.
One pattern:
Factory setting
4 patterns:
One air outlet fully closed
Blowout
direction
patterns
1) Decide on the discharge direction pattern.
2) Be sure to set the remote contoller to the appropriate settings, according to the
number of air outlets and the height of the ceiling on which the unit will be in-
stalled.
2-directional
Note:
6 patterns:
For 3 and 2-directional, please use the air outlet shutter plate (option).
Two air outlet fully closed
Blowout
direction
patterns
9.4. Installing the grille
AMain unit
9.4.1. Preparations (Fig. 9-5)
BScrew with
captive washer
• Install the two enclosed screws with washer 2 in the main unit (at the corner drain
pipe area and at the opposite corner) as shown in the diagram.
A
B
Fig. 9-5
15
9. Installing the grille
D
A
9.4.2. Temporary installation of the grille (Fig. 9-6)
• Temporarily secure the grille using the bell shaped holes by aligning the corner
drain pipe area of the main unit with the two holes of the grille that are marked A
and B.
B
C
A
C
* Make sure that the lead wiring of the grille does not get pinched between the
grille and the main unit.
D
AMain unit
BDetailed diagram of installed screw with
washer 2.
CCorner drain pipe area
DScrew with washer 2 (for temporary use)
EGrille
G
E
H
FScrew with washer 2
GHole A
HHole B
F
I
IBell shaped hole
Fig. 9-6
9.4.3. Securing the grille (Fig. 9-7)
ACeiling
• Secure the grille to the main unit by tightening the previously installed two screws
(with captive washer) as well as the two remaining screws (with captive washer).
* Make sure that there are no gaps between the main unit and the grille or the
grille and the ceiling.
BMain unit
CGrille
E
DMake sure that there are no gaps.
EAdjust the nut of the main unit using a
wrench, etc.
Fixing gaps between the grille and the ceiling
With the grille attached, adjust the height of the main unit to close the gap.
Fig. 9-7
AClamp of the main unit
BTube
9.4.4. Wire connection (Fig. 9-8)
• Be sure to connect the unit to the connector (white, 10-pole). Next, attach the white
glass tube that comes with the main unit so that the tube covers the connector.
Close the opening of the glass tube with the fastener.
CConnector of the main unit
DGrille connector
EFastener
• Make sure that there is no slack in the lead wire at the clamp of the main unit.
A
Warning:
E
B
If the connector is not covered with the glass tube, tracking resulting in fire
may occur.
C
D
A
Fig. 9-8
9.5. Locking the up/down airflow direction (Fig. 9-9)
The vanes of the unit can be set and locked in up or down orientations depending
upon the environment of use.
B
C
• Set according to the preference of the customer.
The operation of the fixed up/down vanes and all automatic controls cannot be
performed using the remote controller. In addition, the actual position of the vanes
may differ from the position indicated on the remote controller.
1 Turn off the main power switch.
Injuries and or an electrical shock may occur while the fan of the unit is rotating.
2 Disconnect the connector for the vane motor of the vent that you want to lock.
(While pressing the button, remove the connector in the direction indicated by the
arrow as shown in the diagram.) After removing the connector, insulate it with
tape.
D
AButton
BVane motor
CUp/down vanes
DConnector
B
D
A
Fig. 9-9
9.6. Installing the wireless sensor (Fig. 9-10)
• Pull out the wireless sensor cable from the square hole in the corner panel of the
refrigerant piping section of the main unit.
A
B
CN90
• Feed the cable through the electric component box of the main unit as shown in the
illustration, and then connect it to CN90 on the control board. Adjust the length of
the cable so the corner panel can be removed, and then secure the cable with the
clamp.
C
D
AClamp
BCable
9.7. Check
CCorner panel
DHole
• Make sure that there is no gap between the unit and the grille, or between the grille
and the surface of the ceiling. If there is any gap between the unit and the grille, or
between the grille and the surface of the ceiling, it may cause dew to collect.
• Make sure that the wires have been securely connected.
EScrew
E
Fig. 9-10
16
9. Installing the grille
G
9.8. Installing the intake grille (Fig. 9-11)
Note:
C
E
D
H
A
When reinstalling the corner panels (each with a safety wire attached), connect
the other end of each safety wire to the grille using a screw (4 pcs,
4 × 8) as shown in the illustration.
* If the corner panels are not attached, they may fall off while the unit is operating.
• Perform the procedure that is described in “9.2. Preparing to attach the grille” in
reverse order to install the intake grille and the corner panel.
• Multiple units can be installed with grille so that the position of the logo on each
corner panel is consistent with the other units regardless of the orientation of the
intake grille. Align the logo on the panel according to the wishes of the customer as
shown in the diagram to the left. (The position of the grille can be changed.)
DRefrigerant piping of the main unit
B
AScrew (4 × 8) 5
BCorner panel
CSafety wire
F
EDrain piping of the main unit
FPosition of the corner panel when sent from the factory (logo attached).
* Installation in any position is possible.
GPosition of the levers on the intake grille when sent from the factory.
Fig. 9-11
* Although the clips can be installed in any of four positions, the configuration shown here is
recommended.
(It is not necessary to remove the intake grille when maintenance is performed on the elec-
tric component box of the main unit.)
HReceiver (Only PLP-6AALM Panel)
10. Easy maintenance function [This function only for A-control]
Display example (Comp discharge temperature 147 °F)
By using the maintenance mode, you can display many types of maintenance data
on the remote controller such as the heat exchanger temperature and compressor
current consumption for the indoor and outdoor units.
A
C
B
This function can be used whether the air conditioner is operating or not.
During air conditioner operation, data can be checked during either normal operation
or maintenance mode stable operation.
* This function cannot be used during the test run.
* The availability of this function depends on the connecting outdoor unit. Refer to
the brochures.
D
Maintenance mode operation procedures
(1) Press the
button for three seconds to
TEST
MAINTENANCE
Display A
activate the maintenance mode.
(2) Press the TEMP.
buttons to set the refrigerant address.
Display B
(3) Select the data you want to display.
Cumulative
operation time
Operation
current
Compressor
information
ON/OFF
number
COMP ON
x10 HOURS
COMP ON
x100 TIMES
COMP ON
CURRENT (A)
Display A
MENU
Heat exchanger
temperature
Outdoor ambient
temperature
Comp discharge
temperature
Outdoor unit
information
OUTDOOR UNIT
H·EXC. TEMP
OUTDOOR UNIT
OUTLET TEMP
OUTDOOR UNIT
OUTDOOR TEMP
Display A
ON/OFF
Stable operation
Indoor room
temperature
Filter operation
time
Heat exchanger
temperature
Using the maintenance mode, the operation frequency can be fixed and the op-
eration can be stabilized. If the air conditioner is stopped, use the following pro-
cedure to start this operation.
Indoor unit
information
INDOOR UNIT
INLET TEMP
INDOOR UNIT
H·EXC. TEMP
INDOOR UNIT
FILTER USE H
Display A
* The filter operation time displayed is the number of hours the filter has been
used since the filter reset was performed.
Press the
button to select the operation mode.
MODE
Stable cooling
operation
Stable operation
cancellation
Stable heating
operation
COOL
STABLE MODE
(4) Press the
button.
HEAT
STABLE MODE
FILTER
STABLE MODE
CANCEL
Display A
(Airflow temperature display example)
Flashing
(5) The data is displayed in C.
Press the
Waiting for
button.
FILTER
Display C
Approx.
147 °F
Waiting for
response
10 sec.
Stable
operation
stable operation
* Repeat steps (2) to (5) to check another date.
Display D
10-20 min.
(6) Press the
button for three seconds or press the
button to
ON/OFF
TEST
* You can check the data using steps (3) to (5) of the maintenance mode opera-
tion procedures while waiting for the stable operation.
deactivate the maintenance mode.
17
This product is designed and intended for use in the residential,
commercial and light-industrial environment.
Please be sure to put the contact address/telephone number on
this manual before handing it to the customer.
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Printed in JAPAN
BG79U795H01
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