Hitachi RAS-2HVNP Installations- Und Betriebshandbuch Seite 31

16
1 Electrical wiring
16.2.1 Setting of DIP switches for outdoor unit
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Quantity and Position of DIP Switches
The PCB in the outdoor unit is operating with 7 types of DIP swit-
ches, and 4 push switch. The location is as follows:
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DSW301: Test run mode
Setting before shipment
Cooling
Heating
Forced stop of compressor
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DSW1: No setting is required
When set pin number 1 to ON, the electric
current detection is cancelled. Pin number
1 should be set back to OFF after electrical
work
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DSW2: Optional function setting and piping lenght
Factory setting
Piping length ≤ 5m
Piping lenght ≥ 30m
Optional function setting
Optional function setting
External input/output setting mode
31
PMML0248A
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DSW3: Capacity Setting (No setting is required)
Setting position
Setting position
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DSW4 / RSW1: Refrigerant cycle number setting
ON
(Setting is required)
1 2 3 4 5 6
Setting for the ten digit
Setting position.
Set by inserting slotted screwdriver into the
groove (setting for the last digit)
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DSW5: End terminal resistance (No setting is required)
Setting before shipment
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DSW6: Setting of multiple indoor units simultaneous
operation (setting is required) (IVX series only)
Optional function setting
ON
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DSW6: Not available for ES series
1 2 3 4 5 6
Factory setting
Model
Model
Model
Setting position
For individual operation (factory
setting position) for IVX series
For simultaneous operation
Set pin number 1 at OFF for simulta-
neous operation
RAS-2HVNP
RAS-2.5HVNP
RAS-3HVNC
RAS-3HVRNS3
or