Panasonic Cs W7bkp Cs W9bkp Cs W12bkp Repair Manual

							10.2.1. SELECT THE BEST LOCATION
(Refer to “Select the best location”
section)
10.2.2. HOW TO FIX INSTALLATION
PLATE
The mounting wall is strong and solid enough to prevent it from
the vibration.
The centre of installation plate should be at more than 450 mm
at right and left of the wall.
The distance from installation plate edge to ceiling should more
than 67 mm.
From installation plate left edge to unit’s left side is 47 mm.
From installation plate right edge to unit’s right is 73 mm.
:
:
:For left side piping, piping connection for liquid should be
about 14 mm from this line.
For left side piping, piping connection for gas should be
about 56 mm from this line.
For left side piping, piping connecting cable should be
about 785 mm from this line.
 1. Mount the installation plate on the wall with 5 screws or
more.
(If mounting the unit on the concrete wall consider using
anchor bolts.)
 • Always mountthe installation plate horizontally by
aligning the marking-off line with the thread and using a
level gauge.
 2. Drill the piping plate hole with ø70 mm hole-core drill.
 • Line according to the arrows marked on the lower left
and right side of the installation plate. The meeting point
of the extended line is the centre of the hole. Another
method is by putting measuring tape at position as
shown in the diagram above. The hole centre is
obtained by measuring thedistance namely 150 mm
and 125 mm for left and right hole respectively.
 • Drill the piping hole at either the right or the left and the
hole should be slightly slanted to the outdoor side.
10.2.3. TO DRILL A HOLE IN THE WALL
AND INSTALL A SLEEVE OF
PIPING
 1. Insert the piping sleeve to the hole.
 2. Fix the bushing to the sleeve.
 3. Cut the sleeve until it extrudes about 15 mm from the wall.
CautionWhen the wall ishollow, please be sure to use the
sleeve for tubeass’y to prevent dangers caused by
mice biting the connecting cable.
 4. Finish by sealing thesleeve withputty orcaulking
compound at the final stage.
10.2.4. INDOOR UNIT INSTALLATION
 1. For the right rear piping
 2. For the right and right bottom piping
10.2. INDOOR UNIT
41
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							 3. For the embedded piping
(This can be used for left rear piping & left bottom piping also.)
42
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							10.2.5. CONNECT THE CABLE TO THE
INDOOR UNIT
 1. The inside and outside connecting cable can be connected
without removing the front grille.
 2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 3 (C7BK,
C9BK, C12BK, V7BK, V9BK, V12BK) or 5 (A7BK, A9BK,
A12BK, W7BK, W9BK, W12BK) × 1.5 mm
2flexible cord,
type designation 245 IEC57 or heavier cord.
 • Ensure the color of wires of outdoor unit and the
terminal Nos. are the same to the indoor’s respectively.
 • Earth lead wire shall be longer than the other lead wires
as shown in the figure forthe electrical safetyin case of
the slipping out of the cord from the anchorage.
 • Secure the cable onto the control board with the holder
(clamper).
INSTALLATION OFAIR PURIFYING FILTERS
 1. Open the front panel.
 2. Remove the air filters.
 3. Put air purifying filters(left) and solar refreshing deodorizing
filter (right) into place as shown in illustration below.
43
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							HOW TO TAKE OUT FRONT GRILLE
Please follow the steps below to take out front grille if
necessary such as when servicing.
 1. Set the vertical airflow direction louver to the horizontal
position.
 2. Slide down the two caps on the front grille as shown in the
illustration below, and then remove the two mounting
screws.
 3. Pull the lower section of the front grille towards you to
remove the front grille.
When reinstalling the front grille, first set the vertical
airflow direction louver to the horizontal position and
then carry out above steps 2 -3 in the reverse order.
AUTO SWITCH OPERATION
The below operations will be performed by pressing the
“AUTO” switch.
 1. AUTO OPERATION MODE
The Auto operation will be activated immediately once the
Auto Switch is pressed.
 2. TEST RUN OPERATION (FOR PUMP DOWN/SERV ICING
PURPOSE)
The Test Run operation will be activated if the Auto Switch
is pressed continuously for more than 5 sec. to below 10
sec.. A “pep” sound will occur at the fifth sec., in order to
identify the starting ofTest Run operation
 3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF
The ON/OFF of Remote Controller receiving sound can be
change over by pressing the “AUTO” Switch continuously
for 10 sec. and above. A “pep”, “pep” sound will occur at the
tenth sec., in order to indicate the “ON/OFF” change over of
remote control receiving sound.
10.3. OUTDOOR UNIT
10.3.1. SELECT THE BEST LOCATION
(Refer to “Select the best location”
section)
10.3.2. INSTALL THE OUTDOOR UNIT
 • After selecting the best location, start installation according
to Indoor/Outdoor Unit Installation Diagram.
 1. Fix the unit on concreteor rigid frame firmly and horizontally
by bolt nut. (ø10 mm).
 2. When installing at roof, please consider strong wind and
earthquake. Please fasten theinstallation standfirmly with
bolt or nails.
10.3.3. CONNECTING THE PIPING
Connecting The Piping To Indoor Unit
Please make flare after inserting flare nut (locate at joint portion
of tube assembly) onto the copper pipe. (In case of using long
piping)
Connect the piping
 • Align the center of piping and sufficiently tighten the flare
nut with fingers.
 • Further tighten the flare nut with torque wrench in specified
torque as stated in the table.
MODELPiping size (Torque)
GasLiquid
C7BK, C9BK, A7BK,
A9BK, V7BK, V9BK,
W7BK, W9BK3/8” (42 N.m)1/4” (18 N.m)
C12BK, A12BK,
V12BK, W12BK1/2” (55 N.m)1/4” (18 N.m)
Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(located at valve) onto the copper pipe.
Align center of piping to valves and then tighten with torque
wrench to the specified torque as stated in the table.
44
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							CUTTING AND FLARING THE PIPING
 1. Please cut using pipe cutter and then remove the burrs.
 2. Remove the burrs by using reamer. If burrs is not
removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder
entering the pipe.
 3. Please make flare after inserting the flare nut onto the
copper pipes.
10.3.4. (a) EVACUATION OF THE EQUIPMENT (FOR EUROPE & OCEANIA DESTINATION)
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the
following procedure.
 1. Connect a charging hose with a push pin to the Low andHigh side of a charging set andthe service port ofthe 3-wayvalve.
 • Be sure to connect the end of the charginghose with the push pin to the service port.
 2. Connect the center hose of the charging set to avacuum pump with check valve, orvacuum pump and vacuum pump adaptor.
 3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to
-76 cmHg (-0.1 MPa). Thenevacuate the air approximately ten minutes.
 4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not
move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
 5. Disconnect the charging hose from the vacuum pumpand from the service portof the3-way valve.
 6. Tighten the service port capsof the 3-wayvalve at torque of 18 N.m with a torque wrench.
 7. Remove the valve caps of both ofthe 2-wayvalve and3-way valve.Position both of the valves to “OPEN” using a hexagonal
wrench (4 mm).
 8. Mount valve caps onto the2-wayvalve and the3-way valve.
 • Be sure to check for gas leakage.
CAUTION • If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:
 • If the leak stops when the piping connections are tightened further, continue working from step 3.
 • If the leak does not stop when the connections are retightened, repair the location of leak.
 • Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause
frostbite.
45
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							(1)*
*Connect the manifo ld gauge to the service port of 3-way
valve.
Measure the pressure.
10.3.6. CONNECT THE CABLE TO THE
OUTDOOR UNIT
 1. Remove the control board cover from the unit by loosening
the screw.
 2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 3 (C7BK,
C9BK, C12BK, V7BK, V9BK, V12BK) or 5 (A7BK, A9BK,
A12BK, W7BK, W9BK, W12BK) × 1.5 mm
2flexible cord,
type designation 245 IEC57 or heavier cord.
 3. Secure the cable onto the control board with the holder
(clamper).
 4. Attach the control board cover back to the original position
(2)*
*Keep it for 5-10 minutes.
Ensure that the pressure indicated on the gauge is the
same as that of measured during the first time.
with the screw.
10.3.5. (b) AIR PURGING OF THE PIPING AND INDOOR UNIT
The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on the compressor.
 1. Remove the caps fromthe 2-way and3-wayvalves.
 2. Remove the service-portcap from the3-wayvalves.
 3. To open the valve, turn the valvestem of 2-wayvalve counter-clockwise approx. 90° and hold it there for ten seconds, then
close it.
 4. Check gas-leakage of the connecting portion of the pipings.
For the left pipings, refer to item 4(A).
 5. To open2-wayvalve again, turn the valve stem counter-clockwise until it stops.
4(A). Checking gas leakage for the left piping.
46
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							10.3.7. PIPE INSULATION
 1. Please carry out insulation at pipe connection portion as
mentioned in Indoor/Outdoor Unit Installation Diagram.
Please wrap the insulated piping end to prevent water from
going inside the piping.
 2. If drain hose or connecting piping is in the room (where dew
may form), please increase the insulation by using POLY-E
FOAM with thickness 6 mm or above.
DISPOSAL OFOUTDOOR UNIT DRAINWATER
 • If a drain elbow is used, the unit should be placed on a
stand which is taller than 3 cm.
 • If the unit is used in an area where temperature falls below
0°C for 2 or 3 days in succession, it is recommended not to
use a drain elbow, for the drain water freezes and the fan
will not rotate.
CHECK THEDRAINAGE
 • Open front panel and remove air filters.
(Drainage checking can be carriedout without removing the
front grille.)
 • Pour a glass of water into the drain tray-styrofoam.
 • Ensure that water flows out from drain hose of the indoor
unit.
EVALUATION OF THEPERFORMANCE
 • Operate the unit at cooling operation mode for fifteen
minutes or more.
 • Measure the temperature of the intake and discharge air.
 • Ensure the difference between the intake temperature and
the discharge is more than 8°C.
47
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							NOTE:These equipment shall be connected to a suitable mains network
with a main impedance less than the following:
CS-A9BKP / CU-A9BKP5: 0.44Ω
CS-C12BKP / CU-C12BKP5: 0.47Ω
CS-A12BKP / CU-A12BKP5: 0.47Ω
CS-V12BKP / CU-V12BKP5: 0.45Ω
CS-W12BKP / CU-W12BKP5: 0.45Ω
CHECK ITEMS
Is there any gas leakage at flare nut connections?
Has the heat insulation been carried out at flare nut
connection?
Is the connecting cable being fixed to terminal board firmly?
Is the connecting cable being clamped firmly?
Is the drainage OK?
(Refer to “Check the drainage” section)
Is the earth wire connection properly done?
Is the indoor unit properly hooked to the installation plate?
Is the power supplyvoltage complied with rated value?
Is there any abnormal sound?
Is the cooling operation normal?
Is the thermostat operation normal?
Is the remote control’s LCD operation normal?
Is the air purifying filter installed?
48
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							11 2-way, 3-way Valve
2-way Valve (Liquid Side)3-way Valve (Gas Side)
WorksShaft PositionShaft PositionService Port
ShippingCloseCloseClose
(With valve cap)(With valve cap)(With cap)
EvacuationCloseCloseOpen
(Installation and(Counter-Clockwise)(Clockwise)(Push-pin)
Re-installation)
OperationOpenOpenClose
(With valve cap)(With valve cap)(With cap)
Pumping downCloseOpenOpen
(Transferring)(Clockwise)(Counter-Clockwise)(Connected manifo ld
gauge)
EvacuationOpenOpenOpen
(Servicing)With vacuumpump
Gas chargingOpenOpenOpen
(Servicing)(Withchargingcylinder)
Pressure checkOpen
(Servicing)OpenOpen(Connected manifo ld
gauge)
Gas releasingOpen
(Servicing)OpenOpen(Connected manifo ld
gauge)
49
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5 
						

							11.1.1. Evacuation of Installation
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES
in the following procedure.
 1. Connect a charging hose with a push pin to the Low
side of a charging set and the service port of a 3-way
valve.
 • Be sure to connect the endof the charging hose with the
push pin to the service port.
 2. Connect the centre hose of the charging set to a
vacuum pump.
 3. Turn on the power switchof the vacuum pump and
make sure that the needle in the gauge moves from 0
MPa (0 cmHg) to -0.1 MPa (-76 cmHg). Then evacuate
the air for approximately ten minutes.
 4. Close the Lowside valveof the charging set and turn
off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
BE SURE TO TAKE THISPROCEDURE IN ORDER TO
AVOID GAS LEAKAGE.If air remain in the indoor unit and refrigeration pipes, it will
affect the compressor, reduce tocooling capacity, and could
lead to a malfunction.
 5. Disconnect the charging hose from the vacuum pump
and from the service port of the 3-wayvalve.
 6. Tighten the service port cap ata torque of 18 N.m with
a torque wrench.
 7. Remove the valvecaps of the2-wayvalve and the 3-
way valve.Position both of thevalves to“open” using
a hexagonal wrench (4 mm).
 8. Mount thevalve capsonto the 2-wayand 3-way valves.
 • Be sure to check for gas leakage.
CautionIf gauge needle does not move from 0 cmHg to -76
cmHg in step (3) above, take the following measures:
If the leaks stop when the piping connections are
tightened further, continue working from step (3).
If the leaks do not stop when the connections are
retightened, repair the location of the leak.
11.1. Evacuation of the Equipment (For Europe & Oceania Destination)
Procedure:
50
CS-W7BKP CU-W7BKP5 / CS-W9BKP CU-W9BKP5 / CS-W12BKP CU-W12BKP5