Panasonic CS-ME9SB4U Manual

© Panasonic Corporation 2016
Air Conditioner
Indoor Unit
CS-ME9SB4U
Destination
USA
Canada
Please file and use this manual together with service manual for Model No. CU-2E18SBU, CU-3E19RBU, CU-4E24RBU, CU-5E36QBU
Order No. PAPAMY1604017CE, PAPAMY1505100CE, PAPAMY1312037CE.
OPENCLOSE
CLOSEOPEN
PO
W
ER
T
IMER
A
IRS
W
IN
G
O
FF/O
N
MODE
POWERFUL/
QUIET
TEMP
OFF/ON
TIMER
SET
CANCEL
ON
OFF
123
AIRSWING
FAN SPEED
SET CHECK CLOCK RESET
AC RC
FAN
SPEED
AIR
SWING
AUTO
HEAT
COOL
DRY
FAN
T E M P
O
FF/ON
T
I
M
E
R
S
ET
CANCEL
O
N
O
FF
1
2
3
C
HEC
K
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
WARNING
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
Install Manual

16
11. Installation Instruction
11.1 Attached Accessories
11.2 Indoor Unit
11.2.1 Selecting the Location for the Indoor Unit
Provide a check port on the piping side ceiling for repair and maintenance.
Install the indoor unit once the following conditions are satisfied and after receiving the customer approval.
1 The indoor unit must be within a maintenance space.
2 The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading
of air throughout the room.
3 Mount with the lowest moving parts at least 8 ft (2.4 m) above floor or grade level.
* If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is
decreased.
4 The installation position must be able to support a load four times the indoor unit weight.
5 The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance.
Installation parts you
should purchase ( )
Sleeve ( )
Bend the pipe as
closely on the wall as
possible, but be careful
that it doesn’t break.
Putty (Gum Type Sealer) ( )
Bushing-Sleeve ( )
Vinyl tape (Wide) ( )
• Apply after carrying
out a drainage test.
Saddle ( )
It is advisable to avoid more than 2 blockage
directions. For better ventilation & multiple-
outdoor installation, please consult authorized
dealer/specialist.
• This illustration is for explanation purposes only.
The indoor unit will actually face a different way.
• Respective outdoor unit installation procedure
shall refer to instruction manual provided in the
outdoor unit packaging.
a
Indoor unit
b
Outdoor
unit
Remote control holder
Remote
Remote control holder fixing screws
control
Attaching the remote control holder to the wall
yt’QemaN
Drainhosewithaclip 1
Heat Insulator 2
Band 4
Flat washer for M10 8
Screw M5 4
Remote Control 1
Remote control holder
Remote control holder fixing screw
1
2
Battery 2
Applicable piping kit Piping size
Gas Liquid
CZ-3F5, 7BP 3/8" (9.52 mm) 1/4" (6.35 mm)
CZ-4F5, 7, 10BP 1/2" (12.7 mm) 1/4" (6.35 mm)
8ft(2.4m)
or more
FloororGradelevel
(Unit: inch (mm))
Obstacles Floor
39
3
/ 8 "
(1000)
or more
19
11
/ 16 "
(500) or
more
96"–118
1
/
8
"
(2400 – 3000)
11
13
/
16
"
(300) or less
19 11/16"
(500) or
more
19 11/16"
(500) or
more
(Unit: inch (mm))

17
6 The indoor unit must allow easy draining.
7 The indoor unit must allow easy connection to the outdoor unit.
8 Place the indoor unit according to the height from the ceiling shown in the illustration below.
9 The indoor unit must be from at least 9.8 ft (3 m) away from any noise-generating equipment. The electrical
wiring must be shielded with a steel conduit.
10 If the power supply is subject to noise generation, add a suppressor.
11 Do not install the indoor unit in a laundry. Electric shocks may result.
Note Thoroughly study the following installation locations
1 In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo
fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying,
dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
oMake sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so
that it draws oily steam which should not flow into the suction of the air conditioner.
oMake enough distance from the cooking room to install the air conditioner in such place where it may not
suck in oily steam.
2 Avoid installing the air conditioner in such
circumstances where cutting oil mist or iron
powder exist especially in factories, etc.
3 Avoid places where inflammable gas is
generated, flows-in, contaminated, or leaked.
4 Avoid places where sulphurous acid gas or
corrosive gas can be generated.
5 Avoid places near high frequency generators.
Model Name Height in the ceiling
ME9*** 11" (280 mm) or
more
11.2.2 Installation of Indoor Unit
This air conditioner uses a drain up motor.
Horizontally install the unit using a level gauge.
CEILING OPENING DIMENSIONS AND HANGING
BOLT LOCATION
The paper model for installation expand or shrink
according to temperature and humidity.
Check on dimensions before using it.
Caution During the installation, care must be taken
not to damage electric wires.
The dimensions of the paper model for installation
are the same as those of the ceiling opening
dimensions.
Be sure to discuss the ceiling drilling work with the
workers concerned.
Air conditioner
Cooking table
Ensure ample
distance
Use the ventilation fan for smoke-
collection hood with sufficient capacity.
Drain pipe
25
9
/ 16 "(650) (Ceiling opening)
(Hanging bolt)
(U
n
it: i
n
c
h
(mm))
25
9
/
16
"(650) (Ceiling opening)
20
7
/
8
"(530)
(Hanging bolt)
22
13
/
16
"(580)
(Unit size)
22
13
/ 16 "(580)
(Unit size)
Refrigerant pipe
20
7
/ 8 "(530)
2
3
/ 8 "
(60)
2
3
/
8
"
(60)
2
3
/ 8 "
(60)
2
3
/ 8 "
(60)

18
POSITIONS OF AIR CONDITIONER BODY AND CEILING SURFACE
11.2.3 Refrigerant Piping
Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit.
(Additional charging, etc.)
1 Brazing for piping.
a. Execute brazing before tightening the flare
nut.
b. Brazing must be executed while blowing
nitrogen gas. (This prevents generation of
oxidized scale in copper pipe.)
2 When there is a lot of brazings for long piping,
install a strainer midway of the piping. (The
strainer is locally supplied.)
3 Use clean copper pipe with inner wall surface
free from mist and dust. Blow nitrogen gas or
air to blow off dust in the pipe before
connection.
4 Form the piping according to its routing. Avoid
bending and bending back the same piping
point more than three times. (This will result in
hardening of the pipe).
5 After deforming the pipe, align centers of the
union fitting of the indoor unit and the piping,
and tighten them firmly with wrenches.
6 Connect pipe to the service valve or ball valve
which is located below the outdoor unit.
7 After completed the piping connection, be sure to check if there is gas leakage in indoor and outdoor
connection.
Vacuum drying
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.
CAUTION Use two wrenches and tighten with regular torque.
Do not overtighten, overtightening may cause gas leakage.
Piping size Torque
1/4" (6.35 mm) 13.3 Ibf•ft [18 N•m (1.8 kgf•m)]
3/8" (9.52 mm) 31.0 Ibf•ft [42 N•m (4.3 kgf•m)]
1/2" (12.7 mm) 40.6 Ibf•ft [55 N•m (5.6 kgf•m)]
5/8" (15.88 mm) 47.9 Ibf•ft [65 N•m (6.6 kgf•m)]
3/4" (19.05 mm) 73.8 Ibf•ft [100 N•m (10.2 kgf•m)]
H
anging
b
olt
(W3/8 or M10) Keep the length of the bolt from
the bracket to 1
9
/ 16 "(40 mm)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
M10Springwasher Air conditioner body
Ceiling
4
7
/
16
"
(113 mm)
11
1
/
8
"
(282 mm)
11
1
/
2
"(292 mm)
a
n
d
a
b
ov
e
Adjust to the same height
Nut
(W3/8 or M10)
Paper model
for installation Set screw for paper
model (4 pieces)
Open the ceiling board along the
outer edge of the paper model.
Flat washer for M10
(accessory)
Warning Tighten the nut and bolt to prevent unit from falling
•
Confirm the red mark of the union (thin side)
is always at lower direction after connecting
piping.
Union
Red mark

19
11.2.4 Indoor Unit Drain Piping
During drain piping connection, be careful not to exert extra force on the drain port at the indoor unit.
The outside diameter of the drain connection at the indoor unit is 1-1/4" (32 mm).
Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings.
Be sure to perform heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with thickness more than 5/16" (8 mm) (local supply).
Drain piping must have down-slope (1/50 to 1/100); be sure not to provide up-and-down slope to prevent reversal
flow.
Be sure to check no air trap on drain hose and to ensure smooth water flow and no abnormal sound.
The height of drain may be possible up to 29-1/2"
(750 mm).
When drain set piping, install as shown in the
figure below.
Drain Test The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain
up motor operation.
Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end.
Feed water to the flexible drain hose and check the piping for leakage.
Be sure to check the drain up motor for normal operating and noise when electric wiring is complete.
When the test is complete, connect the flexible drain hose to the drain port.
Pour about 600-700cc of water in the drain pan of the indoor unit. (Pour from the position specified in the drawing
by using a water supply bottle or other suitable tool.)
Press the drain pump test run on PCB to start the drain motor, and verify water drainage.
(The drain motor will automatically stop after operating for about five minutes.)
Upward routing
Pipe clamp
Indoor
unit
Tr a p
Down-slope
Down-slope Upward-slope
Air Trap No Air Trap
Down-slope (1/50 ~ 1/100)
D
r
ain
p
o
r
t
29
1
/
2
"(750 mm)
or less
Elbow
Elbow
Indoor unit
Apply t
h
e
h
e
a
d
w
h
e
n
c
o
n
n
e
c
ti
n
g
w
it
h
t
h
e
confluence pipe. (about 3
15
/ 16 "(100 mm))
Indoor
unit
D
own-slope (1/50 ~ 1/100) Use VP30 or more confluence
Feed water Drain hose
Drain up motor
Glue the joint
Drain hose connection
Use the clip (accessory)
Main drain pipe
Drain
port
Drain pan
Air outlet vent

20
11.2.5 Heat Insulation
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation
work leads to water leakage.
1 Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 248°F
(120°C)).
2 Precautions in high humidity circumstance.
This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been
confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew
point temperature: more than 73.4°F (23°C)), water drops are liable to fall. In this case, add heat insulation
material according to the following procedure:
oHeat insulation material to be prepared… Adiabatic glass wool with thickness 3/8" to 1 3/16" (10 to
20 mm).
oStick glass wool on all air conditioners that are located in ceiling atmosphere.
oIn addition to the normal heat insulation (thickness: more than 5/16" (8 mm) for refrigerant piping (gas
piping: thick piping) and drain piping, add a further of 3/8" (10 mm) to 1 3/16" (30 mm) thickness
material.
Wall seal
When the outdoor unit is installed on a higher
position than the indoor unit, install the trap so as
not to instill rain water into the wall by transmitting
in piping.
Stuff the space among piping, the electric wire,
and- the drain hose with “Putty” and seal the
penetration wall hole.
Make sure that rain water do not instill into the
wall.
Overlapwithheat
insulator for piping.
Indoor
u
nit
Band
(Accessory)
Heat insulator
for piping
(Local supply)
Heat insulator
(Accessory)
Hose clip (Accessory)
Heat insulator (Local supply)
(The thickness must be at
least
5
/ 16 "(8 mm).)
Flexible hose with
heat insulator
(Accessory) PVC pipe
(O.D. ø1"
(ø26)
(Local
supply)
To be glued
It may be required to take off this part for checking or
servicing the drain up motor. Please do not glue.
Make sure that there is no clearance here.
ÂPut the incision at the trap part of the heat
i
n
sul
a
tor (
f
or w
a
t
e
r
d
r
a
i
n
)
Pi
p
e
d
o
w
n
Indoor
unit
Pipe
Putty
Tra p
Incision
Drain pipe

21
11.2.6 Connect the Cable to the Indoor
Open the control board cover by removing 2 pcs of screw.
Unscrew and open the conduit cover upper case. Remove the plug and fix the conduit connector to conduit cover
with lock nut.
Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor UL listed
or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes. Allowable
connection cable length of each indoor unit shall be 98.4 ft (30 m) or less.
Secure the connection cable onto the control board with the holder (clamper).
Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively.
Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
11.2.7 Installation of Decorative Panel
The decorative panel has its installation direction. Confirm the direction by displaying the piping side.
1 Remove the air inlet grille by moving the catchers to center.
WARNING
RISK OF FIRE
JOINING OF WIRES
MAY CAUSE
OVERHEATING AND
FIRE.
Wire stripping
7/32"(5 mm)
or more
Conductor
over inserted
No loose strand
when inserted
Indoor/outdoor
connection
terminal
board
13/32"±1/16"
(10±1 mm)
WIRE STRIPPING,
CONNECTING
REQUIREMENT
Conductor
fully inserted
Conductor not
fully inserted
(gap between wires) ACCEPT PROHIBITED PROHIBITED
WARNING
This equipment must be properly earthed.
Terminals on the indoor unit 1 2 3
Colour of wires
Terminals on the outdoor unit 1 2 3
Control box cover
Wire insertion hole
S
c
r
e
w
s
12 3
Installer should
open the earth
wire screw on
the metal part
when necessary
for installation or
service purpose.
Connector
Connector
inlet hole
Lock nut
Screw Conduit Cover
upper case
Indoor-Outdoor
connection wire
inlet
Plug
Terminal
Indoor
Do not joint wires
OR
OROR
Use complete wire without joining.
Use approved socket and plug with earth pin.
Wire connection in this area must follow to
national wiring rules.
* Hang the hinge on the hole of
decorative panel. (The direction of
the installation is free.)
Hinge
Air inlet grill
Air inlet grill
C
a
tch
e
r
Decorative panel

22
2 Fitting the decorative panel
oTemporarily secure the fixing screws (3
pcs.) before fitting the decorative panel.
(For temporarily securing the front grille.)
oPlace decorative panel on the screws (3
pcs.) before fitting, move decorative
panel as illustrated and tighten all the
screws (4 pcs.).
Check before hand the height from the ceiling to
the unit.
The front grille fitting direction is determined by
the unit direction.
Only use the screws with the length of 1-3/8"
(35 mm) which is provided, to fix the decorative
panel.
Do not use other screw which is longer it may
cause damage to the drain-pan and other
components.
3 Fit the decorative panel and ceiling wall together and confirm no gap in between. Readjust indoor unit height,
if there is a gap between ceiling wall and decorative panel.
4 Open the indoor control box cover by
removing 2 pcs of screw.
5 Insert firmly the connector of cosmetic louver
to indoor pcb CN-STM1, CN-STM2 and
CN-DISP.
Be caution not to clamp the cord in between
control board and control board cover.
6 After complete, install back removed part
follow reverse procedure.
Be sure to hook the air inlet grill string,
to prevent grill from falling and causing
injury from it.
Approx. 3/4"(20 mm)
Decorative
Front grille fixing
scews (4 pcs.)
Tighten this
screw first
after hanging
the grille
f
r
a
m
e
Securing the tentative
fixing screw
Panel moving
direction
Piping
direction
Good example
Cool air leakage
(no good) Air
Air conditioner
unit
Decorative
panel
Ceiling
Air conditioner
unit
Decorative
panel
Fit the insulator (this part) and
be careful for cool air leakage.
Ceiling
Air
Bad example
CN-STM1
C
N
-
S
T
M
2
Clamp lead
wire with band
here
CN-DISP
Hang the
string Catcher
Catche
r
Air inlet grille