Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual page 39

C. Example of a MA remote controller system (address setting is not necessary.)
NOTE : In the case of same group operation, need to set the address that is only main M-NET control indoor unit.
Example of wiring control cables
1. Standard operation
L
1
OC
(00)
TB3 TB7
M1 M2 S M1 M2 S
• 1 MA remote controller for
each indoor unit
2. Operation using 2 remote controllers
OC
(00)
TB3 TB7
M1 M2 S M1 M2 S
• Using 2 MA remote control-
lers for each M-NET control
indoor unit
3. Group operation
OC
(00)
TB3 TB7
M1 M2 S M1 M2 S
• Multiple indoor units operated
together by 1 MA remote con-
troller
Combinations of 1 through 3 above are possible.
OCH668B
L
2
M-IC M-IC
(00) (00)
TB5 TB15
TB5
1 2
M1 M2 S M1 M2 S
A B
MA-RC
M-IC M-IC
(00) (00)
TB5 TB15 TB5 TB15
M1 M2 S 1 2 M1 M2 S
1 2
A B A B
A B
MA-RC MA-RC MA-RC
(Main) (Sub)
M-IC
(00)
TB5 TB15
M1 M2 S 1 2 M1 M2 S
A B
MA-RC
r8
Wiring Method and Address Setting
a. Use feed wiring to connect terminals M1 and M2
on transmission cable block (TB3) for the outdoor
unit (OC) to terminals M1 and M2 on the trans-
mission cable block (TB5) of each M-NET control
indoor unit (M-IC). Use non-polarized 2-core wire.
b. Connect terminals 1 and 2 on transmission cable
terminal block (TB15) for each M-NET control
TB15
indoor unit with the terminal block for the MA
1 2
remote controller (MA-RC).
A B
MA-RC
a. The same as above a
b. The same as above b
c. In the case of using 2 remote controllers, connect
terminals 1 and 2 on transmission cable terminal
block (TB15) for each indoor unit with the terminal
block for 2 MA remote controllers.
· Set either one of the MA remote controllers to
"sub remote controller".
Refer to the installation manual of MA remote con-
troller.
a. The same as above a
b. The same as above b
c. Connect terminals 1 and 2 on transmission cable
M-IC
terminal block (TB15) of each M-NET control indoor
(00) unit, which is doing group operation with the terminal
block the MA remote controller. Use non-polarized
TB5 TB15
2-core wire.
1 2
d. In the case of same group operation, need to set
the address that is only main M-NET control indoor
unit. Please set the smallest address within number
01–50 of the M-NET control indoor unit with the
most functions in the same group.
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