Specifications

242
(b) If plural outdoor units are used
1) A maximum of 48 indoor units can be connected by using the crossover wiring method, with 2 wires for
each side of the outdoor and indoor units.
Double cores 0.75 ~ 2 mm
2
Total length of signal wires: 1000 m or less
AB
Outdoor unit
AB
Indoor unit
AB
Outdoor unit
AB
Indoor unit
AB
Outdoor unit
AB
Indoor unit
AB
Outdoor unit
AB
Indoor unit
2) Indoor/outdoor wiring method for multiple floors.
3) Loop wiring is inhibited
(5) Remote controller wiring
(a) Wiring for controlling only one indoor unit.
Double cores 0.75 ~ 2 mm
2
Total length of signal wires: 1000 m or less
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Outdoor
unit
Indoor
unit
Outdoor
unit
Indoor
unit
Outdoor
unit
Indoor
unit
Outdoor
unit
Indoor
unit
(No)
Loop wiring of signal wires is inhibiteed
Wiring at the Portion indicated by a
dotted line is inhibited.
Note (1) Cables for the remote controller have polarity. Be sure to connect
terminal blocks with the same numbers. If mis wiring occurs, E1 is
displayed and disables the unit from operating.
X Y Z
Red White Black
X Y Z
Red White Black
Indoor unit
terminal blocks
Remote controller
terminal blocks