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CAUTION
If the total length is less than or equal to 200m and the total number of indoor units is less than or equals
to 10 sets, the electronic expansion valve in indoor unit can be powered and controlled by the master
outdoor unit.
If the total length is longer than 200m or the total number of indoor units is more than 10 sets, a repeater
is required to increase the bus voltage.
The limit of one repeater is 200m cable length or maximum 10 indoor units.
A maximum of two repeaters can be installed in the same refrigerant system.
HyperLink (M1M2) communication can control the electronic expansion valve in indoor unit indenpently,
this function requires the maximum number of indoor units in the same refrigerant system must be less
than or equal to 30 sets.
The repeaters and the outdoor units must connect to an unified power supply system, or the repeater
uses an uninterruptible power supply.
Refer to the Installation and Operation Manual of repeater for detail.
For one repeater application, commucation cable among the master outdoor unit, indoor units and
repeater must use the CN3 port in repater, the commucation cable among repeater and the rest indoor
units must use the CN2 port in repeater.
For two repeaters application, the commucation cable among the master outdoor unit, indoor units and
repeater 1 must use the CN3 port in repater1, the commucation cable among repeater 1, indoor units and
repeater 2 must use the CN2 port in repeater 1 and CN3 port in repeater 2.
The electronic expansion valve in indoor unit can be powered and controlled by the master outdoor unit.
If a separate power supply applied for indoor units.
The repeater is opitional, contact dealer for detail.
B
HyperLink (M1M2) communication (with unified power supply)
Single unit: When the indoor units are provided with unified power supply, it is not necessary for
HyperLink (M1M2) communication wiring to provide an independent power supply for
indoor units. In this case, use 2×0.75mm2 communication cables. M1 and M2 ports
are located at terminal block "CN10" of the main control board. There is no distinction
between negative and positive electrodes. For details, see the following figure:
M1 M2
CN10
Connect to outdoor unit M1M2
(HyperLink)
Main
control
board
CAUTION
Do not connect the HyperLink (M1M2) communication wiring to the PQ or D1D2 communication wiring.
