Mitsubishi Electric CITY MULTI PUMY-SP80 Installation Manual page 18

6. Electrical work
System chart <mixed system with branch boxes and City Multi indoor units>
[1] Basic system
OC
BC (5-branch type)
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 Group operation between A-control system and M-
NET control system
OC
(5-branch type)
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·VKMD
~/N 220-230-240 V 50 Hz
~/N 220 V 60 Hz
■
PUMY-SP·YKMD
3N~ 380-400-415 V 50 Hz
3N~ 380 V 60 Hz
en
17
OC: Outdoor unit
BC: Branch box
M-IC: M-NET control Indoor unit (City Multi indoor unit)
A-IC: A-control indoor unit (M, S, P series indoor unit)
MA-RC: MA remote controller
M-NET RC: M-NET remote controller
WL-RC: Wireless remote controller
BC (3-branch type)
M-IC
E A B C
A-IC A-IC A-IC
WL-RC WL-RC WL-RC MA-RC
4 M-NET remote controller connection to a system
that contains a branch box
BC
A
E
A-IC
M-IC
MA-RC MA-RC
MA-RC
NO
~/N 220-230-240 V 50 Hz
A
B
~/N 220 V 60 Hz
A
B
[2] Incorrect systems
1 Group operation by MA
remote controller
O C
BC (3-branch type)
A
M-IC
A-IC A-IC
MA-RC
NO
MA-RC
O C
(3-branch type)
B C
A-IC A-IC
M-NET
WL-RC
RC
NO
Fig. 6-6
A
A Switch (Breakers for Wiring and Current Leakage)
B Outdoor Unit
C Branch box
Fig. 6-7
2 Group operation between different
refrigerant systems
O C
BC (3-branch type)
B C A B C
A-IC A-IC
MA-RC
WL-RC
NO
1 Plural indoor units cannot be operated by a MA remote
controller.
2 Different refrigerant systems cannot be connected together.
3 Different types control systems (A-IC/M-IC) cannot be con-
nected together.
4 An M-NET remote controller cannot be connected to a
system that contains a branch box.
E E
D A-control indoor unit (M, S, P series indoor unit)
E M-NET control Indoor unit (City Multi indoor unit)
F Pull Box
O C
BC (3-branch type)
A B C
A-IC A-IC
WL-RC
F
E E