Mitsubishi Electric PUHZ-W85VHA Manuel D'installation page 5

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
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