128
OCH668B
9-5. SYSTEM SWITCH SETTING
In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series,
each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and
remote controller must be set using their settings switches. Please consult the installation manual that comes with each unit for
detailed information on setting procedures.
9-6. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM (USING PUMY-SP
·
YKM)
Grounded
Group operation
Pull box
M-NET control indoor unit
Breaker for Wiring
and Current Leakage
Breaker for Wiring
and Current Leakage
1.25 mm
2
× 2
Outdoor
unit
Grounded
Pull box
MA
RC
Breaker for Wiring
and Current Leakage
Breaker for Wiring
and Current Leakage
1.25 mm
2
or more
(Shield cable)
3N 380-400-415V, 50 Hz
3N
～
380 V, 60 Hz
■
Example of system when using a Branch Box
■
Example of system when using a M-NET controller
<When power is supplied separately>
～
/N 220-230-240V, 50 Hz
～
/N 220 V, 60 Hz
～
Transmission cable
M-NET control
indoor unit
M-NET control
indoor unit
MA
RC
M-NET
RC
M-NET
RC
M-NET
RC
MA
RC
M-NET control
indoor unit
MA
RC
Branch Box
A-control
indoor unit
MA
RC
A-control
indoor unit
MA
RC
A-control
indoor unit
MA
RC
0.3–1.25 mm
2
(0.75–1.25 mm
2
)
MA-RC cable
Outdoor
unit
Pull box
MA
RC
Breaker for Wiring
and Current Leakage
Breaker for Wiring
and Current Leakage
1.25 mm
2
or more
(Shield cable)
3N 380-400-415V, 50 Hz
3N
～
380 V, 60 Hz
～
/N 220-230-240V, 50 Hz
～
/N 220 V, 60 Hz
～
Transmission cable
M-NET control
indoor unit
M-NET control
indoor unit
MA
RC
Branch Box
A-control
indoor unit
MA
RC
A-control
indoor unit
MA
RC
0.3–1.25 mm
2
(0.75–1.25 mm
2
)
MA-RC cable
<When power is supplied from outdoor unit>
B1
B2
;
Branch Box
A-control
indoor unit
MA
RC
A-control
indoor unit
MA
RC
A-control
indoor unit
MA
RC
3N 380-400-415V, 50 Hz
3N
～
380 V, 60 Hz
～
/N 220-230-240V, 50 Hz
～
/N 220 V, 60 Hz
～
0.3–1.25 mm
2
(0.75–1.25 mm
2
)
MA-RC cable
Outdoor
unit
