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 exceeded, charge the unit with additional R410A refrigerant
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
51 - 60 m
61 - 70 m
P200
70 m
30 m
0.9 kg
1.8 kg
2.7 kg
3.6 kg
P250
1.2 kg
2.4 kg
3.6 kg
4.8 kg
4. Installing the refrigerant piping
4.7. For twin/triple/quadruple combination (Fig. 4-9)
• When this unit is used as a FREE COMPO MULTI unit, install the refrigerant
piping with the restrictions indicated in the drawing on the left. In addition, if the
restrictions are going to be exceeded, or if there are going to be combinations of
indoor and outdoor units, refer to installation instructions for the indoor unit for
details about the installation.
Outdoor unit
Permissible total piping length
A+B+C+D+E
Charge-less piping length
A+B+C+D+E
P200
P250
70 m and less
30 m and less
Outdoor unit
| B-C | or | B-D | or
| B-E | or | C-D | or
| C-E | or | D-E |
No. of bends
P200
P250
8 m and less
Within 15
A+B+(+D)(+E)
70 m
* “D” is for triple.
* “E” is for four (quadruple).
5. Drainage piping work
B–C
B–D
8 m
C–D
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
Fig. 4-9
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
* With Heater
model only
Power supply terminal block (L1, L2, L3, N, )
Indoor/outdoor connection terminal block (S1, S2, S3)
Service panel
Clamp
* Clamp the cables so that they do not contact the center of the service panel or the gas valve.
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to unit.
Indoor unit
Outdoor unit
Remote controller
Main switch (Breaker)
Earth
For Power
For Heater
Indoor unit
Outdoor unit
Multi distribution pipe (option)
Height difference (Indoor unit-
Outdoor unit) Max. 30 m
Height difference (Indoor unit-
Indoor unit) Max. 1 m
A: Main piping
B, C, D, E: Branch piping
Note: If the protective sheet for
the electrical box is re-
moved during servicing,
be sure to reinstall it.
* Except PEA-RP200, 250, 400, 500GA
For Heater
For Heater
For Heater
For Heater
For Power
Summary of Contents for PUHZ-P-YHA Series
Page 111: ......
