Hitachi RAS-(4-12)HNP(1)(E) - DSW4; RSW1: Refrigerant Cycle Number Setting (Setting Is Required); DSW5: End Terminal Resistance (no Setting Is Required); Setting for Transmission by Means of DSW4; RSW1 and DSW5

4 Electrical wiring
105
SMGB0087 rev.0 - 12/2013
4
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DSW4 / RSW1: Refrigerant cycle number setting (Setting is required)
In case of using an H-Link II net it is required to set the refrigerant cycle number.
Setting for the ten digit
(Factory setting)
1 2 3 4 5 6
ON
Setting position.
Set by inserting slotted screwdriver into the groove
(setting for the last digit)
Rotary switche’s positions (RSW1) are set by inserting a screw driver into the groove.
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DSW5: End terminal resistance (No setting is required)
• Before shipment, No. 1 pin of DSW5 is set at ON.
• In case of having 2 or more outdoor units connected to the same H-link, set for the second unit the pin number 1 of
DSW5 at OFF.
• If only one outdoor unit is used, no setting is required.
Factory setting
1 2
ON
Cancellation
(Setting of end terminal resistance)
1 2
ON
Setting for transmission by means of DSW4 / RSW1 and DSW5
It is required to set the outdoor unit number refrigerant cycle and end terminal resistance for the H-LINK.
In the same refrigerant cycle, set the same refrigerant cycle number for the outdoor unit and the indoor units.
Example in case of setting before cycle number 25
DSW4: Turn ON pin number 2
1 2 3 4 5 6
ON
RSW1: set dial number 5
0
9
8
7
6
5
4
3
2
1
In case that the outdoor units quantity in the same H-LINK II is 2 or more, set in the DSW5 the pin number 1 OFF side
from the second refrigerant group outdoor units. If only one outdoor unit is used (in the same H-Link II system), no setting
is required.