47
System: The HyperLink (M1M2) communication wiring with a unified power supply between indoor
unit and outdoor unit can reach a length of up to 2000 meters, supporting any topology
connection. The following figure shows a serial connection:
M1
M2
CN23
M1
M2
L
N
CN1
CN10
M1
M2
L
N
CN1
CN10
L1
La
M1
M2
L
N
CN1
CN10
Ln
××
××
Distribution box
Master
outdoor unit
Indoor unit (n-1)#
···
2-(n-2)# Indoor unit
Indoor unit 1#
Circuit breaker
Power supply for indoor unit
Power supply cable
Communication wires
Indoor unit n#
Distribution box
L1+La+Ln ≤ 2000m
For other connection methods (tree topology, star topology, ring topology), please refer to the technical
manual or consult technical personnel.
CAUTION
When HyperLink (M1M2) with a unified power supply is available, a unified power supply for indoor units is
required. For details, see "Power supply cable Connection".
When HyperLink (M1M2) with a unified power supply is available, there is no need to connect a repeater
to the system.
C
P/Q communication
Single unit: Use a shielded cable for the P/Q communication and properly earth the shield layer. P and
Q ports are located at terminal block "CN6" of the main control board. There is no distinction
between negative and positive electrodes. Connect the shield layer to the sheet metal of the
electric control box, as shown in the following figure:
CN6
P Q
Electric control box sheet metal part
Main control board
Connect to the outdoor unit PQ
