Hitachi YUTAKI RAS-4WHVNPE Instruction Manual page 29

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:
RAS-(4-10)WH(V)NPE
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DSW1: For Test Run
Factory setting
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DSW2: Optional Function Setting
Factory setting
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 become available)
External input/output setting mode (The input
/ output signals selection mode becomes
avaliable)
14 PMML0372B rev.5 - 01/2021
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DSW3: Capacity
Factory setting
RAS-4WHVNPE
ON
1 2 3 4 5 6
RAS-4WHNPE
ON
1 2 3 4 5 6
RAS-8WHNPE
ON
1 2 3 4 5 6
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DSW5: End Terminal Resistance (no setting is
required)
Factory setting
In the case that the outdoor units quantity in the same H-LINK
is 2 or more, set No. 1 pin of DSW5 at "OFF" side from the 2nd
refrigerant group outdoor unit. If only one outdoor unit is used,
no setting is required.
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DSW4 / RSW1: No setting is required
Factory setting
ON
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DSW6: No setting is required
1 2 3 4 5 6
Factory setting
RAS-5WHVNPE RAS-6WHVNPE
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-5WHNPE RAS-6WHNPE
ON
ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-10WHNPE
ON
1 2 3 4 5 6