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10-2-1. System Configuration
• Header unit: The header unit receives the indoor unit data (thermostat status) of the follower
(Without identical line address & indoor/outdoor serial) and then finally controls
the outdoor compressor matching with its own thermostat status.
The header unit sends this command information to the follower unit.
• Follower unit: The follower unit receives the indoor unit data from the header
(With identical line address & indoor/outdoor serial) and then performs the
thermostat operation synchronized with the header unit.
The follower unit sends own thermostat ON/OFF demand to the header unit.
(Example)
No. 3-1 header unit sends/receives signal to/from No. 3-2 and No. 3-3 follower units.
(It is not influenced by the refrigerating line 1 or 2 address indoor unit.)
1. Single
Outdoor
Indoor
Remote
controller
1-1
Individual
(Master/Header)
2. Double twin
1-1
Master/Header
1-2
Sub/Follower
1-3
Sub/Follower
1-4
Sub/Follower
3. Twin
5. Single group operation
6. Multiple groups operation (Single, Twin, Triple operation)
(Manually addresses change)
2-1
Sub/Header
1-1
Sub/Header
3-1
Sub/Header
4-1
Master/Header
8-1
Sub/Header
(Max. : 8 units)
2-1
Sub/Header
1-1
Sub/Header
1-2
Sub/Follower
3-1
Master/Header
3-2
Sub/Follower
3-3
Sub/Follower
4. Triple
1-1
Master/Header
1-2
Sub/Follower
1-3
Sub/Follower
1-1
Master/Header
1-2
Sub/Follower
• Each indoor unit controls the outdoor unit individually.
