Mitsubishi Electric CITY MULTI PUMY-SP112 Installation Manual page 18

6. Electrical work
System chart <mixed system with branch boxes and City Multi indoor units>
[1] Basic system
OC
BC
A B C D
A-IC A-IC A-IC A-IC A-IC
MA-RC MA-RC WL-RC WL-RC WL-RC
3
OC
en
BC
A B C D
A-IC A-IC A-IC A-IC A-IC
WL-RC WL-RC WL-RC WL-RC
6.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example) (Fig. 6-7)
PUMY-SP·VKM
PUMY-SP·YKM
17
BC
M-IC
E A B C
A-IC A-IC A-IC
WL-RC WL-RC WL-RC MA-RC
4
BC
A
E
A-IC
M-IC
MA-RC MA-RC
MA-RC
NO
A
B
A
B
[2] Incorrect systems
1
O C
BC
A
M-IC
A-IC A-IC
MA-RC
MA-RC NO
O C
B C
A-IC A-IC
M-NET
WL-RC
RC
NO
Fig. 6-6
A
A
B
C
Fig. 6-7
2
O C
BC
B C A B C
A-IC A-IC
MA-RC
WL-RC
NO
1
2
3
4
E E
D
E
F
O C
BC
A B C
A-IC A-IC
WL-RC
F
E E