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S3
S3
S2
S1
S2
S1
L N
8
4. Installing the refrigerant piping
5. Drainage piping work
Outdoor unit drainage pipe connection
PUHZ-SHW series is not connectable with a drainage pipe because of cold district specification.
7. Electrical work
7.1. Outdoor unit (Fig. 7-1, Fig. 7-2)
1
Remove the service panel.
2
Wire the cables referring to the Fig. 7-1 and the Fig. 7-2.
C
Fig. 7-1
A
Indoor unit
B
Outdoor unit
C
Remote controller
D
Main switch (Breaker)
E
Earth
Fig. 7-2
A
B
D
D
A
A
A
B
C
E
E
E
For Power
For Power
L N
S1 S2 S3
SHW80, 112V
J
J
L1 L2 L3 N
S1 S2 S3
SHW112 - 230Y
J
J
F
Terminal block
G
Indoor/Outdoor connection terminal block (S1, S2, S3)
H
Service panel
I
Clamp
J
Earth terminal
* Clamp the cables so that they do not contact the center of the service panel or the gas valve.
Note :
If the protective sheet for the electrical box is removed during servicing, be
sure to reinstall it.
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
E
Note: Only for Air to Water Heat Pump
When multiple indoor units (Hydro boxes) are connected to the outdoor unit,
wire the PCB of either one of the indoor unit and the outdoor unit (S1, S2,
S3).
It is impossible to connect the PCBs of multiple indoor units to the outdoor
unit.
<Limits of refrigerant piping installation>
SHW112, 140 : A+B+C ≤ 75 m
SHW230
: A+B+C ≤ 80 m
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
A: Main piping
B, C: Branch piping
Max. 20 m
4.7. For twin/triple/quadruple combination (Fig. 4-9)
(Only for Air-Conditioners)
• 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 restric
-
tions 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
Charge-less
piping length
A+B+C
SHW112, 140
75 m or less
30 m or less
SHW230
80 m or less
30 m or less
Outdoor unit
|B-C|
No. of bends
SHW112, 140, 230
8 m or less
Within 15
6. Water piping work (Only for Air to Water Heat Pump)
Minimum water quantity
Following water quantity is required in the water circuit.
Model
Minimum water quantity (L)
SHW80
34
SHW112
48
SHW140
60
SHW230
99
Make sure to perform freeze protection measure such as applying anti-freeze solution when operating the unit on cooling mode under low ambient temperature (under 0 °C).
Fig. 4-9