Drainage Piping Work; Water Piping Work; Electrical Work - Mitsubishi Electric PUHZ-W85VHA Installation Manual

4. Drainage piping work

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

5. Water piping work

5.1. Water piping connection (Fig.5-1)
• Connect the water pipes to the outlet and to the inlet pipes
(ISO 228/1-G1B).
• Inlet and outlet pipes position is shown on the Fig.5-1.
• Install the hydraulic fi lter at the water intake.
• Maxmum allowable torque at the water piping connection is 50 N
• Check if water leaks after installation.
• Use the water pressure in more than 0 MPa gauge and less than 0.3MPa gauge.
• Use the inlet water of higher than 5˚C and lower than 55˚C.
5.2. Water quality condition
• The water in a system should be clean and with a pH value of 6.5-8.0.
• The followings are the maximum values;
Calcium : 100mg/L
Chlorine : 100mg/L
Iron/manganese : 0.5mg/L
[Fig. 5-1]
A Water outlet
B Water inlet
Note : Insulate the water piping properly. The performance can be poor if the
insulation is insuffi cient.
Warning:
As the outlet water temperature can reach 60ºC at maximum, do not touch
directly the water piping with a bare hand.

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
m.
•
A Interface unit/
Flow temp. controller
B Outdoor unit
C Remote controller
D Main switch(Earth leakage breaker)
E Earth
Optional parts name Model name
Drain socket PAC-SG61DS-E
Drain pan PAC-SG64DP-E
Fig. 5-1
Fig. 6-2
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.
L N S1 S2 S3
5