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Wiring method
•
Address setting method
a. Indoor/outdoor transmission line
Connection of shielded wire:
The same as 1. (3)
The same as 1. (1)
c. MA remote controller wiring
For 2-remote controller operation:
For indoor group operation:
The same as 1. (1)
The same as 1. (1)
The same as 1. (1)
d. LOSSNAY connection
Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on
the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires)
❉
The interlocking registration of the indoor unit and LOSSNAY from the system controller is required. (For the
registration method, see the installation manual of the system remote controllers.) When connecting ON/OFF
remote controller and LM adaptor only, the interlocking registration from the remote controller is required.
e. Switch setting
Address setting is required as listed below.
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on
each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control
switch (SW2-1) on the main board of all outdoor units to “ON.”
❉
Make sure to use shielded wire.
Connection of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect
S-terminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box.
1
Indoor unit
2
LOSSNAY
3
MA remote
controlle
4
Outdoor unit
r
Main unit
Sub unit
Main unit
BC Controller
(sub)
Hex. unit
BC Controller
(main)
Sub unit
IC
LC
MA
OC
MA
01 ~ 50
01 ~ 50
Not required
52 ~ 100
51 ~ 100
Not required
Order
Unit or controller
Address
Setting method
Caution
Factory
setting range
setting
• Set
•
•
the lowest address within
a same group to the indoor unit
desired to be the main unit.
[Main unit +1, +2, +3, .... ]
Set any address after setting al
5
Auxiliary
units
BS
OS
BC
Set with main/sub selector switch.
l
indoor units.
–
00
00
Main
00
• When operating indoor
units with different function
within a same group, as-
sign the indoor unit with the
most plenty of function to
the main unit.
• Set the address not to be
overlapped with the indoor
unit address.
The lowest address of indoor unit
within refrigerant 50
The address of the indoor unit
connected to the sub BC con-
troller must be larger than that
of the indoor unit connected to
the main BC controller.
If applicable, set the sub BC
controllers in an R2 system in
the following order:
(1) Indoor unit to be connected
to the main BC controller
(2) Indoor unit to be connected
to No.1 sub BC controller
(3) Indoor unit to be connected
to No.2 sub BC controller
Set the address so that (1) < (2) < (3)
•
Use the address that equals the
sum of the smallest indoor unit
address out of all the indoor
units that are connected to the
sub BC controller and 50.
Outdoor unit a1
Requires a branch-num-
ber setting.
Set to the main unit address wit-
hin a same group in serial order
• To set the address to “100,”
set it to “50”.
• If the address of the heat
exchanger unit or main BC
controller overlaps with
the address of the outdoor
unit or the sub BC control-
ler, use an unused ad-
dress within the setting
range.
• The use of a sub BC con-
troller requires a main BC
controller.
