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9. Group connection
Wiring regulation on the remote controllers in the multi-split systems are reviewed and allowed for
group connection.
Outdoor unit
NOTES:
• Group connection is applicable for models that are produced in 2013 or later in following prod-
ucts:
– KM series other than the following models in wall-mounted type
• ASBH27KMTA
• ASBH31KMTA
– LM/LF series in wall-mounted type
– Floor type
• Connection is possible only on products of the same wire type.
• Up to 16 indoor units can be controlled by using one wired remote controller.
9-1. Precautions on creating a group connection
Take precautions on items described in this section when creating a group connection.
• Maximum wiring length of the remote controller cable: 300 m
Even if the maximum wiring length of the product itself is specified as longer than 300 m, the maxi-
mum length of the remote controller cable will be 300 m if the system is group-connected.
When total wiring length is longer than 100 m, the cable diameter needs to be changed as follows:
Total wiring length of remote controller cable
9-1. Precautions on creating a group connection
Example of group connection
Indoor unit
*Exterior of each device shown above might be different from the actual one.
Unit: m
100 or less
100—200
200—300
Indoor unit
Outdoor unit
Cross section of cable
- 17 -
2
Unit: mm
0.3—0.8
0.5—0.8
0.8
9. Group connection
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