Drainage Piping Work; Water Piping Work; Electrical Work - Mitsubishi Electric Mr.Slim PUHZ-SHW-HA Installation Manual

4. Installing the refrigerant piping
<Limits of refrigerant piping installation>
SHW80, 112, 140 : A+B+C ≤ 75 m
Fig. 4-10

5. Drainage piping work

Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
SHW80, 112, 140
Drain socket
Drain pan PAC-SG64DP-E
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 60
SHW112 80
SHW140 100
SHW230 160

7. Electrical work

7.1. Outdoor unit (Fig. 7-1, Fig. 7-2)
Remove the service panel.
Wire the cables referring to the Fig. 7-1 and the Fig. 7-2.
S1
S2
S3
L N S1 S2 S3
For Power For Power
Fig. 7-1
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.
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: Branch piping
Max. 20 m
SHW230
PAC-SG61DS-E
PAC-SH97DP-E
Indoor unit
Outdoor unit
Remote controller
Main switch (Breaker)
Earth
4.8. For twin/triple/quadruple combination (Fig. 4-10)
• 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.
Permissible total
Outdoor unit piping length
SHW80, 112, 140 75 m and less
Outdoor unit
SHW80 - 140 8 m and less
Fig. 7-2
Terminal block
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.
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.
Charge-less
piping length
A+B+C A+B+C
30 m and less
|B-C| No. of bends
Within 15
SHW80, 112V
L N S1 S2 S3
SHW112 - 230Y
L1 L2 L3 N S1 S2 S3
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