MXZ-SM36NAMHZ Service Manual

47
OCH789
B. Example of a group operation system with 2 or more outdoor units and an M-NET remote controller.
(Address settings are necessary.)
Examples of Transmission Cable WiringWiring Method Address Settings
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.
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.
Unit Range Setting Method
M-IC (Main) 01 to 50
Use the smallest address within the same group of CITY MULTI series indoor units.
M-IC (Sub) 01 to 50
Use an address, other than the M-IC (Main) in the same group of CITY MULTI
series indoor units. This must be in sequence with the M-IC (Main).
Outdoor Unit 51 to 100
Use the smallest address of all the CITY MULTI series indoor units plus 50.
The address automatically becomes “100” if it is set as “01–50”.
Main M-NET Remote Controller 101 to 150
Set at an M-IC (Main) address within the same group plus 100.
Sub M-NET Remote Controller 151 to 200
Set at an M-IC (Main) address within the same group plus 150.
MA Remote Controller —
Address setting is not necessary. (Main/sub setting is necessary.)
A
B
C
E
D
TB7
TB3
M-IC
(51)
TB5
M-NET RC
(01)
M-IC
TB5
(03)
M-IC
TB5
(02)
M-IC
TB5
(04)
M-IC
TB5
(05)
TB5
(07)
M-IC
TB5
(06)
L2
L1
(101)
(105)
(104)
(155)
OC
TB7
(53)
OC
3
Power Supply
Unit
System
controller
L3
L5
L6
L4
2
1
A: Group
B: Group
C: Group
D: Shielded Wire
E: Sub M-NET Remote Controller
( ): Address example
r
r
r
M1 M2 S
M1 M2 S
M1 M2 S M1 M2 S
A BA BA B
M1 M2 S M1 M2 S M1 M2 S
S
M1 M2 S
TB3
M1 M2 S
M1 M2 S
A B
M1 M2
M1 M2 S
M1 M2 S
NO
M-IC
M-NET RC
M-NET RC
M-NET RC