Mitsubishi Electric PUMY-P112VKM4 Technical & Service Manual page 48

D. Example of a group operation with 2 or more outdoor units and an MA remote controller.
(Address settings are necessary.)
L
2
L
5
A : Group
B : Group
C : Group
D : Shielded Wire
E : Sub MA 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 1 and 2 on the terminal block for MA remote controller line (TB15) on the indoor unit (IC) to the termi-
nal block on the MA remote controller (MA-RC). (Nonpolarized two-wire)
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
Sub M-NET Remote Controller
MA Remote Controller
h. When connecting PWFY unit
• For PWFY series, do not set up group connection with other indoor units.
• LOSSNAY is not available for use with PWFY series.
• Use a WMA remote controller for operation of PWFY series.
For more details, refer to the service manual for PWFY series.
OCH673D
OC
(51)
TB3 TB7
M1 M2 S M1 M2 S
D
L
3
OC
(53)
NO
TB3
TB7
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 indoor units.
Use an address, other than the M-IC (Main) in the same group of
01 to 50
M-NET indoor units. This must be in sequence with the M-IC (Main).
Use the smallest address of all the indoor units plus 50.
51 to 100
The address automatically becomes "100" if it is set as "01–50".
101 to 150 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
m
2
(01) (02)
TB5 TB5
TB15 TB15
M1 M2 S M1 M2 S
1 2 1 2
A B
MA-RC
L
4
M-IC
M-IC
(04)
(03)
TB5 TB15 TB5 TB15
M1 M2 S M1 M2 S
1 2
1 2
A B
MA-RC
B
Setting Method
48
C
M-IC M-IC
m
2
(05) (06)
TB5 TB5
TB15 TB15
M1 M2 S M1 M2 S
1 2 1 2
A B A B
MA-RC MA-RC
E
M-IC
(07)
TB5 TB15
M1 M2 S
1 2