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8. Electrical work
8.5. Switch setting
Dip switch setting (Shut off the outdoor unit and branch box power
supply before setting)
SW1
ON
OFF
1 2 3 4 5 6
SW4
ON
OFF
1 2 3 4 5 6 7 8 9 0
The black square ( ) indicates a switch position.
Address switch SW11, SW12 (Shut off the outdoor unit and branch box power supply before setting)
Actual indoor unit address setting varies in different systems. Refer to the installation manual for the outdoor unit for details on how to make the address setting.
Each address is set with a combination of the settings for the tens digit and ones digit.
[Factory default value] Set to "1".
(Example)
• When setting the address to "3", SW12 (tens digit) "0", SW11 (ones digit) "3"
• When setting the address to "25", SW12 (tens digit) "2", SW11 (ones digit) "5"
(Example)
en
• When setting the address of the branch box to "3", an address is assigned to each indoor unit starting with Unit A as shown below no matter if each indoor unit is con-
nected. (SW1-1~5 ON)
Indoor Unit A
Address 3
Indoor Unit B
Address 4
Indoor Unit C
Address 5
Indoor Unit D
Address 6
Indoor Unit E
Address 7
• When the address is set to "25" and also 3 indoor units (Unit A, Unit C, and Unit E) are connected. (SW1-1, 1-3, 1-5 ON)
Indoor Unit A
Address 25
Indoor Unit C
Address 26
Indoor Unit E
Address 27
13
SW4
Model selection
(Example)
• When the indoor units are
connected to Indoor unit
A and C, turn SW1-1 and
SW1-3 to on.
(Example)
• When the system includes a
cooling only indoor unit, turn
on SW4-5 of all the controller
boards on the Branch boxes.
SW12
SW11
Address setting
Address setting
TENS DIGIT
ONES DIGIT
1
2
3
SW1
4
5
6
SW1
Indoor unit
connections
OFF
Indoor unit A
Not connected
Indoor unit B
Not connected
Indoor unit C
Not connected
Indoor unit D
Not connected
Indoor unit E
Not connected
Not used
ON
Connected
Connected
Connected
Connected
Connected
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