Mitsubishi Electric CITY MULTI PUMY-P112VKM5 Technical & Service Manual page 35

B. Example of a group operation system with 2 or more outdoor units and an M-NET remote controller.
(Address settings are necessary.)
L
2
L
5
A: Group
B: Group
C: Group
D: Shielded Wire
E: Sub M-NET Remote Controller
( ): Address example
a. Always use shielded wire when making connections between the outdoor unit (OC) and the CITY MULTI series
indoor unit (M-IC), as well for all OC-OC, and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3)
of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable terminal block of the
CITY MULTI series indoor unit (M-IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the CITY MULTI series indoor unit (M-IC)
that has the most recent address within the same group to the terminal block on the M-NET remote controller (M-NET
RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor
unit (OC).
e. DO NOT change the jumper connector CN41 on outdoor multi controller circuit board.
f. The earth processing of S terminal for the centralized control terminal block (TB7) is unnecessary. Connect the termi-
nal S on the power supply unit with the earth.
g. Set the address setting switch as follows.
Unit
M-IC (Main)
M-IC (Sub)
Outdoor Unit
Main M-NET Remote Controller 101 to 150
Sub M-NET Remote Controller
MA Remote Controller
h. The group setting operations among the multiple CITY MULTI series indoor units are done by the M-NET remote con-
troller (M-NET RC) after the electrical power has been turned on.
OCH740
OC
(51)
TB3
TB7
M1 M2 S M1 M2 S
D
L
3
OC
(53)
NO
TB7
TB3
M1 M2 S M1 M2 S
Power Supply
Unit
M1 M2 S
System
controller
M1 M2 S
Range
01 to 50
Use the smallest address within the same group of CITY MULTI series indoor units.
Use an address, other than the M-IC (Main) in the same group of CITY MULTI series
01 to 50
indoor units. This must be in sequence with the M-IC (Main).
Use the smallest address of all the CITY MULTI series indoor units plus 50.
51 to 100
The address automatically becomes ˝100˝ if it is set as ˝01–50˝.
Set at an M-IC (Main) address within the same group plus 100.
151 to 200
Set at an M-IC (Main) address within the same group plus 150.
—
Address setting is not necessary. (Main/sub setting is necessary.)
L
1
A
M-IC
M-IC
(01) (02)
TB5 TB5
M1 M2 S M1 M2 S
A B
(101)
M-NET RC
L
4
M-IC
M-IC
(04)
(03)
TB5 TB5
M1 M2 S M1 M2 S
A B
(104)
M-NET RC
B
Setting Method
35
C
M-IC M-IC
(05) (06)
TB5 TB5
M1 M2 S
M1 M2 S
A B A B
(105) (155)
M-NET RC M-NET RC
E
M-IC
(07)
TB5
M1 M2 S