Automatic Address Example From Unset Address (No Miswiring); Group Operation (Twin Operation) - Toshiba RAV-GM561ATP-E Service Manual

10-2-2. Automatic Address Example from Unset Address (No miswiring)

1. Standard (One outdoor unit)
1) Single
1-1
Individual

2) Group operation (Twin operation)

(Multiple outdoor units = Miltiple indoor units only with serial communication)
2-1
Sub/Header
Only turning on source power supply (Automatic completion)
• Header unit: The header unit receives the indoor unit data (thermo status) of the follower
(Without identical line address & indoor/outdoor serial) and then finally controls the
outdoor compressor matching with its own thermo 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 thermo
operation synchronized with the header unit.
The follower unit sends own thermo ON/OFF demand to the header unit.
(Example)
No. 1-1 header unit sends/receives signal to/from No. 1-2 and No. 1-3 follower units.
(It is not influenced by the line 2 or 3 address indoor unit.)
(Master/Sub)
1-1 1-2
Sub/Header Sub/Follower
2-1 2-2
Master/Header Sub/Follower
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FILE NO. SVM-18043