A
C
B
S3
S3
S2
S1
S2
S1
L N
D
L1 L2 L3 N
S1 S2 S3
L N
S1 S2 S3
7
4.6. Addition of refrigerant
• Additional charging is not necessary if the pipe length does not exceed 30 m.
• If the pipe length is exceeds 30 m, charge the unit with additional R410A refrig
-
erant according to the permitted pipe lengths in the following table.
* When the unit is stopped, charge the unit with the additional refrigerant
through the liquid stop valve after the pipe extensions and indoor unit have
been vacuumized.
When the unit is operating, add refrigerant to the gas check valve using a
safety charger. Do not add liquid refrigerant directly to the check valve.
* After charging the unit with refrigerant, note the added refrigerant amount on
the service label (attached to the unit).
Refer to the “1.5. Using R410A refrigerant air conditioners” for more informa
-
tion.
• Be careful when installing multiple units. Connecting to an incorrect indoor unit
can lead to abnormally high pressure and have a serious effect on operation
performance.
Model
Permitted
pipe
length
Permitted
vertical
difference
Additional refrigerant charging amount
31 - 40 m
41 - 50 m
P71-140
-50 m
-30 m
0.6 kg
1.2 kg
4. Installing the refrigerant piping
4.7. For twin/triple combination
Refrigerant piping limitation of length, height difference are shown in the figure. (Fig.
4-8)
A
Indoor unit
B
Outdoor unit
C
Multi distribution pipe (option)
D
Height difference (Indoor unit-Outdoor unit) Max. 30 m
E
Height difference (Indoor unit-Indoor unit) Max. 1 m
P71-140 : A+B+C(+D) 50 m
5. Drainage piping work
B–C
B–D
8 m
C–D
A
C
A
A
B
D
E
B
C
A
D
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
Fig. 4-8
P71-140
Drain socket
PAC-SG61DS-E
Drain pan
PAC-SG64DP-E
6. Electrical work
6.1. Outdoor unit (Fig. 6-1, Fig. 6-2)
1
Remove the service panel.
2
Wire the cables referring to the Fig. 6-1 and the Fig. 6-2.
Fig. 6-1
A
Indoor unit
B
Outdoor unit
C
Remote controller
D
Main switch (Breaker)
E
Earth
A
Earth terminal
B
Terminal block
C
Clamp
D
Service panel
E
Wire the cables so that they do not contact the center of the service panel or the gas valve.
Fig. 6-2
D
A
A
A
B
C
E
E
E
E
For Power
A
B
C
E
D
P71-140
P71-100V
P71-140Y
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to unit.
For Power
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