Mitsubishi Electronics Mr Slim Pla A Aa User Manual

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  
Qty  
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
SW51 : ON SW52, 3 : OFF  
SW51, 2 : ON SW53 : 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  
SW51 : ON  
SW52 : OFF  
SW53 : OFF  
SW51 : ON  
SW52 : OFF  
SW53 : ON  
SW51 : ON  
SW52 : ON  
SW53 : OFF  
SW51 : ON  
SW52 : ON  
SW53 : 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  
ACONTROL  
heat pump models  
MAIN  
ON  
KCONTROL  
cooling only models  
SUB  
INDOOR UNIT  
CONTROL BOARD  
SW51  
SW52  
SW53  
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 Mainand the other to Sub. For  
setting procedures, refer to Function selection of remote controllerin 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.  
MODEL SELECT  
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.  
MODEL SELECT  
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.  
MODEL SELECT  
3
2
min  
2 Press the  
Pair No. 0blinks.  
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  
39  
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 00blinks.  
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 Settingcolumn 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 units remote controller  
Remote controllers 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 M.  
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 M.  
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 RUNliquid 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  
TEST RUN  
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.  
CHECK  
B00begins to blink.  
ERROR CODE  
h
Fig. 7-4  
3 While pointing the remote controller toward the units 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 units protection device is not con-  
nected.  
Reverse or open phase wiring for the outdoor units 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  
Qty  
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 openposition, 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 grilles 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 grillein  
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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