McQuay MDS030AR Applications Manual page 50

Design & installation Guide For McQuay MDS Multi System
-50-
2.7.3 MDS080 240B/BR
Outdoor
380V/3N~/50Hz
Unit electric control box
L1 L2 L3 N
QF
Main board
Main power
Communic-
terminal support
ation port
Connecting central control(optional)
2.7.4 MDS260 300B/BR
Outdoor
380V/3N~/50Hz
Unit electric control box
L1 L2 L3 N
QF
Main power
terminal support
380V/3N~/50Hz
Unit electric control box
L1 L2 L3 N
Outdoor
QF
Main power
terminal support
Connecting central control(optional)
Indoor
Shielded wire
Communication wire
Main board
Communic-
ation port
Indoor
Slave unit
Main board
Communic-
ation port
Communication wire
Master unit
Main board
Communic-
ation port
Indoor unit 1 Indoor unit 2
Main board Main board
Communic- Communic-
ation port ation port
A
A B
Communication wire
Indoor unit i
J2
A
B
The communication cable at the end of
indoor unit J2-1 needs to be set to ON.
Indoor unit 1 Indoor unit 2
Main board
Main board
Communic-
Communic-
ation port
ation port
A
A B
Communication wire
Indoor unit i
Main board
J2
Communic-
ation port
A
B
The communication cable at the end of
indoor unit J2-1 needs to be set to ON.
B
Indoor unit 3
Communication wire
B
Communication wire