– 60 –
Setup method
(1) Connect the header units of systems to perform system cooperation defrosting to each other by Uh
(U3, U4) (Central control).
(2) Set the outdoor DN code (O. DN) [01D], [01E], [01F] to the header unit in each system by the following setup
method. (Setting the outdoor DN code (O. DN) to follower unit is not necessary.)
1) Decide a master unit and vassal units from header units of each of the systems, and set the master unit to
[01F] = 0001, and the vassal units to [01F] = 0002 or 0003.
2) Set the outdoor DN code [01E] of each header unit to 0001.
When using the central controller for system cooperation defrosting control, set to 0001 through 0128 in
accordance with the manual for the central controller.
3) Set the number of systems performing defrosting cooperation (0002 or 0003) in the [01D] of the outdoor
unit set to be the master unit.
(3) Reset power supply of outdoor unit, and setup is complete.
<Wiring and setup examples>
Outdoor
DN code
Item
Description
At shipment
01d
System cooperation
defrosting settings 1
(number cooperating)
0000 : None (vassal)
0002 : 2-system cooperation (master unit)
* set [01D] = 0002 or 0003 to outdoor unit set to master unit in outdoor DN code [01F]
0001 : Prohibition
0003 : 3-system cooperation (master unit)
0000: None
(vassal)
01E
System cooperation
defrosting settings 2
(zone address)
0000 : None
0001 when not using central controller for control for system cooperation defrosting,
0001 to 0128 when using central controller
0001 to 0128: Addresses
0000: None
01F
System cooperation
defrosting settings 3
(cooperation address)
0000: None
0002 or 0003: Vassal units 2 or 3
0001: Master unit
0000: None
2-system setup
3-system setup
System
I
Outdoor unit
Uh
Header unit
U3
U4
Indoor
unit
System
II
Outdoor unit
Uh
Header unit
U3
U4
Indoor
unit
System
I
header unit
Master
Vassal
Outdoor
DN code
Setting value
[01D]
[01E]
[01F]
2
1
1
System
II
header unit
Outdoor
DN code
Setting value
[01D]
[01E]
[01F]
0
1
2
System
I
Outdoor unit
Uh
Header unit
U3
U4
Indoor
unit
System
II
Outdoor unit
Uh
Header unit
U3
U4
Indoor
unit
System
I
header unit
Master
Vassal
Outdoor
DN code
Setting value
[01D]
[01E]
[01F]
3
1
1
System
II
header unit
Outdoor
DN code
Setting value
[01D]
[01E]
[01F]
0
1
2
System
III
Outdoor unit
Uh
Header unit
U3
U4
Indoor
unit
Vassal
System
III
header unit
Outdoor
DN code
Setting value
[01D]
[01E]
[01F]
0
1
3
