Dsw2: Pipe Length Setting (Setting Is Required) / Optional Function Setting - Hitachi RAS-(3-6)HVNC1(E) Service Manual

4 Electrical wiring
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DSW2: Pipe length setting (setting is required) / Optional function setting
Pipe length setting should be performed as follows
according to the on-site pipe length.
Cooling only
Control to support existing pipes.
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).
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DSW3: Capacity setting (no setting is required)
Factory setting
RAS-2HVNP1 RAS-2.5HVNP1
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
RAS-4HVNP1E RAS-4HVNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-4HNP1E RAS-4HNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-8HN(P/C)E RAS-10HN(P/C)E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
104
SMGB0087 rev.0 - 12/2013
Setting before
shipment
Pipe length (≤5m)
Pipe length (≥30m)
ON
1 2 3 4 5 6
RAS-3HVNP1E RAS-3HVNC1E
ON ON
1 2 3 4 5 6
1 2 3 4 5 6
RAS-5HVNP1E RAS-5HVNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-5HNP1E RAS-5HNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-12HN(P/C)
ON
1 2 3 4 5 6
RAS-6HVNP1E RAS-6HVNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-6HNP1E RAS-6HNC1E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6