Mitsubishi Electric CITY MULTI PAR-40MAAU Installation Manual page 6

4 How To Wire Transmission Line
The wiring is different when the remote controller is connected to a CITY MULTI control system ("-A"
type and later) and when it is connected to M-series and P-series air conditioners (A control type).
The wiring also differs with the system configuration. Check the system used.
1. Connecting to CITY MULTI control system
The numbers (1) to (4) in the figure correspond to items (1) to (4) in the following description.
Address = 51
Group 01
a
Address = 01
TB7 TB3
TB5
(1)
Address = 55
a
Address = 08
TB7 TB3
TB5
f
(1)
g
Group 04
(1) Wiring from the remote controller
• Connect to the MA remote controller terminal block (TB15) on the indoor unit.
• The terminal block has no polarity. Connect to the terminal block at the bottom of the remote
controller case.
(2) Operating in a group (Groups 03, and 04 above)
• Interconnect the MA remote controller terminal block (TB15) of the indoor units you want to
operate as a group, and connect the MA remote controller to that point.
• When the remote controller is used in combination with the system controller as shown in the
figure above, group setting at the system controller (central controller in the figure above) is
necessary.
(3) Number of connectable remote controllers
• A main remote controller and one sub remote controller, a total of two, can be connected to a
group made up of indoor units.
(4) To interlock to a LOSSNAY or OA processing unit, make the following settings using the remote
controller. (For a description of how to set an interlock, see section 10 "Service menu" (5)
"LOSSNAY setting".)
Set the LOSSNAY or OA processing unit address and the address of all the indoor units you want
to interlock.
(5) Total length of remote controller wiring
• The MA Remote Controller can be wired up to 200 m (656 ft).
Remote controllers cannot be wired together. Only one wire
CAUTION
can be connected to the remote controller terminal block.
NOTE: When interlocking the MA remote controller with a LOSSNAY or OA processing unit,
always set the address of all the indoor units in the group and the address of the
LOSSNAY or OA processing unit.
Group 02
Address = 02
b b
TB15 TB5 TB15
(1)
e
d d
(3) (3)
Address = 07
b b
TB15 TB5 TB15
d e
(3)
Group 03
Address = 03 Address = 04
Address = 09
b b c
TB5 TB15 TB5 TB15 TB5 TB15
(1)
(2)
d
(2)
(3)
Address = 06
Address = 05
b b
TB5 TB15 TB5 TB15
(2)
– 6 –
Connect to TB15
on the indoor unit.
(4)
a Outdoor unit
b Indoor unit
c LOSSNAY or
OA processing unit
d Main Remote Controller
e Sub Remote Controller
f Central controller
g Power supply unit for
transmission line
d e