Drainage Piping Work; Electrical Work - Mitsubishi Electric Mr. Slim PU-P HA Series Installation Manual

4. Installing the refrigerant piping
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.
A
E
A
D
P71-140 : A+B+C(+D) 50 m
Fig. 4-8

5. Drainage piping work

Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).

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.
S1
S2
S3
B
L N S1 S2 S3
D
D
For Power For Power
B
E
C
A
B D
C
A
B
B–C
B–D 8 m
C–D
A
A Indoor unit
B Outdoor unit
C
C Remote controller
D Main switch (Breaker)
E Earth
A A
C
E E
Fig. 6-1
* 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.
Permitted
Model pipe
length
P71-140 -50 m
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
Drain socket
Drain pan
P71-140
A
D
C
E
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.
A
E
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to unit.
Permitted
Additional refrigerant charging amount
vertical
31 - 40 m
difference
-30 m 0.6 kg
P71-140
PAC-SG61DS-E
PAC-SG64DP-E
P71-100V
B
L N S1 S2 S3
P71-140Y
L1 L2 L3 N
Fig. 6-2
41 - 50 m
1.2 kg
S1 S2 S3
7