Drainage Piping Work; Water Piping Work; Electrical Work - Mitsubishi Electric PUHZ-SWHA Série Manuel D'installation

5. Drainage piping work

Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
SW50
Drain socket PAC-SJ08DS-E
Drain pan PAC-SG63DP-E

6. Water piping work

Minimum water quantity
Following water quantity is required in the water circuit.
Model Minimum water quantity (L)
SW50 22
SW75 32
SW100 43
SW120 54
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).

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.
For Power
Fig. 7-1
8
SW75
PAC-SG61DS-E
PAC-SG64DP-E
A Indoor unit
(Interface unit/
Flow temp. controller)
B Outdoor unit
C Remote controller
D Main switch (Earth leakage breaker)
E Earth
SW100, 120
■
SW50
■
SW75-120
F
G
H
I
K
Fig. 7-2
F Terminal block
G Indoor/Outdoor connection terminal block (S1, S2, S3)
H Service panel
I Clamp
* Clamp the cables so that they do not contact the center of the service panel or the gas valve.
J Earth terminal
K Wire the cables so that they do not contact the center of the service panel.
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 unit.
■
SW50
SW75-120V
L N S1 S2 S3
SW100, 120Y
J
L1 L2 L3 N S1 S2 S3
J