Outdoor
Unit
2 Units ARCNB21
3 Units ARCNB31
4 Units ARCNB41
Master
A
Slave 1
B
Slave 2
C
Slave 3
D
A B C D
≥ ≥
≥
(1) (2) (3) (4)
(1) Indoor unit side connection pipe
(2) Outdoor unit to outdoor unit connection pipe (1st branch)
(3) Outdoor unit to outdoor unit connection pipe (2st branch)
(4) Outdoor unit to outdoor unit connection pipe (3rd branch)
For more information including installaion method of connection pipe, refer accessory installation
manual.
*Maximum combination could be different
in accordance with model line up.
Low Pressure Gas
Pipe[Unit : mm]
Liquid Pipe
[Unit : mm]
High Pressure Gas
Pipe[Unit : mm]
Model
4. Refrigerant Piping System
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