Panasonic CS-YW7MKD / CS-YW9MKD / CS-YW12MKD / CS-YW7MKD-1 / CS-YW9MKD-1 / CS-YW12MKD-1 / CU-YW7MKD / CU-YW9MKD / CU-YW12MKD / CU-YW7MKD-1 / CU-YW9MKD-1 / CU-YW12MKD-1 Service Manual ▷ View online
17
9.2.3 Indoor Unit Installation
18
t
u
c
o
T
.
1
e
h
t
f
o
e
c
a
f
r
u
s
l
a
n
r
e
t
n
i
e
h
t
,
d
e
r
a
l
f
y
l
r
e
p
o
r
p
n
e
h
W
.
s
s
e
n
k
c
i
h
t
n
e
v
e
f
o
e
b
d
n
a
e
n
i
h
s
y
l
n
e
v
e
ll
i
w
e
r
a
l
f
e
h
t
h
t
i
w
t
c
a
t
n
o
c
o
t
n
i
s
e
m
o
c
t
r
a
p
e
r
a
l
f
e
h
t
e
c
n
i
S
.
h
s
i
n
i
f
e
r
a
l
f
e
h
t
k
c
e
h
c
y
ll
u
f
e
r
a
c
,
s
n
o
i
t
c
e
n
n
o
c
g
n
i
r
a
l
f
r
e
p
o
r
p
m
I
e
c
a
f
r
u
S
d
e
n
il
c
n
I
d
e
g
a
m
a
d
n
e
v
e
n
U
d
e
k
c
a
r
C
s
s
e
n
k
c
i
h
t
e
r
a
l
f
o
T
.
3
r
a
B
k
r
a
m
w
o
r
r
a
d
e
R
e
l
d
n
a
H
e
r
o
C
e
k
o
Y
e
l
d
n
a
h
p
m
a
l
C
r
a
B
m
m
5
.
0
–
0
e
p
i
p
r
e
p
p
o
C
r
e
m
a
e
R
s
r
r
u
b
e
v
o
m
e
r
o
T
.
2
n
w
o
d
t
n
i
o
P
e
p
i
P
9.2.4 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 5 x 1.0
mm2 (YW7MKD, YW9MKD,YW7MKD-1, YW9MKD-1) or 5 x 1.5 mm2 (YW12MKD,YW12MKD-1) flexible cord,
type designation 245 IEC 57 or heavier cord. The attached wire 8 with two connectors should be applied.
type designation 245 IEC 57 or heavier cord. The attached wire 8 with two connectors should be applied.
Ensure the color of wires of outdoor unit and the terminal numbers are the same to the indoor’s
respectively.
Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety
in case of the slipping out of the cord from the anchorage.
Secure the cable onto the board with the holder (clamper).
9.2.4.1
Wiring Stripping and connecting requirement
Wire stripping
5 mm
or more
(gap between
wires)
ACCEPT
PROHIBITED
Conductor
over insert
over insert
No loose strand when insert
Indoor/outdoor
connecting
terminal board
connecting
terminal board
10
±
1
m
m
Conductor
fully insert
fully insert
PROHIBITED
Conductor not
fully insert
9.2.5 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 are not removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe.
end down to avoid the metal powder entering the pipe.
3
Please make flare after inserting the flare nut onto the copper pipes.
19
9.3 Outdoor
Unit
9.3.1 Install the Outdoor Unit
• After selecting the best location, start installation according to indoor/outdoor unit installation diagram.
1
Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).
2
When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand
firmly with bolt or nails.
firmly with bolt or nails.
9.3.2 Connecting the Piping
9.3.2.1 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.
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.
9.3.2.2 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 (locate 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.
flare nut (locate 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.
9.3.3 Evacuation of the equipment
When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following
procedures.
A B C D
474
474
86.7
19.9
261
Piping size (Torque)
Model
Gas Liquid
CS/CU-YW7MKD
3/8" (42N•m )
1/4" (18N•m)
CS/CU-YW9MKD
3/8" (42N•m )
1/4" (18N•m)
CS/CU-YW12MKD
3/8" (55N•m )
1/4" (18N•m)
CS/CU-YW7MKD-1
3/8" (42N•m )
1/4" (18N•m)
CS/CU-YW9MKD-1
3/8" (42N•m )
1/4" (18N•m)
CS/CU-YW12MKD-1 3/8" (55N•m )
1/4" (18N•m)
Do not over tighten, over tightening
cause gas leakage
B
A
C
D
e
u
q
r
o
T
h
c
n
e
r
w
r
e
n
n
a
p
S
h
c
n
e
r
W
r
o
20
1
Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
valve.
z
Be sure to connect the end of the charging hose with the push pin to the service port.
2
Connect the center hose of the charging set to a vacuum pump.
3
Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0cmHg (0 Mpa) to -76cmHg (-0.1Mpa). Then evacuate the air approximately ten minutes.
0cmHg (0 Mpa) to -76cmHg (-0.1Mpa). Then evacuate the air approximately ten minutes.
4
Close the Low side valve of the charging set and turn off the vacuum pump. Make sure the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
gauge does not move after approximately five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5
Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6
Tighten the service port caps of the 3-way valve at a torque of 18N
ym with a torque wrench.
7
Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4mm).
using a hexagonal wrench (4mm).
8
Mount valve caps onto the 2-way valve and the 3-way valve.
z
Be sure to check for gas leakage.
Caution
• If gauge needle does not move from 0cmHg (0Mpa) to -76cmHg (-0.1Mpa), 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 location of leak.
• Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant,
it may cause frostbite.
9.3.4 Connect the cable to the outdoor unit
1
Remove the control board cover from the unit by loosening the screw.
Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 x 1.0
mm2 (YW7MKD, YW9MKD,YW7MKD-1, YW9MKD-1) or 5 x 1.5 mm2 (YW12MKD,YW12MKD-1) flexible
cord, type designation 245 IEC 57 or heavier cord. The attached wire 8 with two connectors should be
applied.
cord, type designation 245 IEC 57 or heavier cord. The attached wire 8 with two connectors should be
applied.
2
Secure the cable onto the control board with the holder (clamper).
3
Attach the control board cover back to the original position with the screw.
4
For wiring stripping and connection requirement, refer to instruction 9.2.4.1 of indoor unit.
9.3.5 Piping insulation
1
Please carry insulation at piping connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram.
Please wrap the insulated piping end to prevent water from going inside the piping.
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 6mm or above.
using POLY-E-FOAM with thickness 6mm or above.
Click on the first or last page to see other CS-YW7MKD / CS-YW9MKD / CS-YW12MKD / CS-YW7MKD-1 / CS-YW9MKD-1 / CS-YW12MKD-1 / CU-YW7MKD / CU-YW9MKD / CU-YW12MKD / CU-YW7MKD-1 / CU-YW9MKD-1 / CU-YW12MKD-1 service manuals if exist.