Hitachi RAS-3HVRNS3 - 16.3.4 DIP Switch Setting for Multiple H-LINK Systems; DIP Switch Settings for Multiple H-LINK Systems

Electrical wiring
25
PMML0318A - P5415337
ENGLISH
16.3.4 DIP switch setting for multiple H-LINK system
The DIP switches of all the outdoor and indoor units have to be set as follows:
Unit Name of DIP switch Mark
Setting before the
shipment
Function
Outdoor unit
Terminal resistance DSW5
DSW5-1 is “ON” position before shipment.
• It is not necessary to set when H-LINK is connected with
only one outdoor unit.
• When H-LINK is connected with more than one outdoor unit,
set as follows:
- First outdoor unit: Keep DSW5-1 in “ON”.
- Other outdoor units: Set DSW5-1 to “OFF”.
Refrigerant cycle
DSW4
RSW1
For setting the refrigerant cycle address of the outdoor unit. Set
the DSW4 and RSW1 to overlap the setting of other outdoor
units in the same H-LINK system.
Indoor unit
Refrigerant cycle
DSW5
RSW2
DSW5
RSW2
For setting the refrigerant cycle address of the indoor unit. Set
the DSW5 and RSW2 corresponding to the address of outdoor
unit in the same refrigerant cycle.
Address of the
indoor unit
DSW6
RSW1
DSW6
RSW1
Setting indoor unit address. Set the DSW6 and RSW1 not to
overlap the setting of other indoor units in the same refrigerant
cycle. (If no set, the automatic address function is performed.)
16
Example of the setting of the DIP switches.
(00) (01)
(02)
(00) (00) (00) (00) (01) (01)
(02)
(02) (02)
(00) (01) (02) (03) (00) (01)
(00)
(01) (02)
Indoor
units
Outdoor
units
Cycle number 0
Cycle number 1
Cycle number 2
DSW5
Terminal resistance
DSW4
Number of refrigerant cycle.
(setting for tenth digit
)
RSW1
Number of refrigerant cycle
(setting for last digit)
DSW6
Address of the indoor unit
(setting for the tenth digit)
.
DSW5
Number of refrigerant cycle.
(setting for tenth digit)
RSW2
Number of refrigerant cycle
(setting for last digit)
RSW1
Address of the indoor unit
(setting for the last digit)