Hitachi UTOpIA IvX Series Instruction Manual page 30

ELECTRIC WIRING
10.2.1 Setting of DIP Switches for outdoor unit
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Quantity and Position of DIP Switches
The location is as follows:
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DSW1: For Test Run
Factory setting
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DSW2: Optional function setting and piping
length
Factory setting
Piping length ≤ 5m
Piping length ≥ 30m
Control to support existing pipes or when
using Ø19,05 gas pipe (soft-annealed), switch
ON DSW2 pin 4 in the outdoor unit PCB
Optional function setting mode (The optional
function selection mode becomes available)
External input/output setting mode (The input
/ output signals selection mode becomes
avaliable)
14 PMML0397B rev.3 - 01/2020 - P5416650
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DSW3: Capacity
Factory setting
raS-12HnCe
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DSW4 / RSW1: Refrigerant cycle number setting
Factory setting
(Setting for the tens digit)
Factory setting
(Setting for the last digit)
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DSW5: Transmission setting of end terminal
resistance
Factory setting
Cancellation
In the case that the outdoor units quantity in the same H-LINK
is 2 or more, set pin number 1 of DSW5 at "OFF" side from the
second refrigerant group outdoor unit. If only one outdoor unit is
used, no setting is required.
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DSW6: Optional function setting
For individual operation
(factory setting position)
For simultaneous operation
ON
1 2 3 4 5 6
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