Mitsubishi Electric PURY-P200 Service Handbook page 31

a. Indoor/outdoor transmission line
Connection of shielded wire:
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 (
c. MA remote controller wiring
For 2-remote controller operation:
For indoor group operation:
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.
Order Unit or controller
Main unit
1 Indoor unit
Sub unit
2 LOSSNAY
Main uni t
MA remote
3
controlle r
Sub unit
4 Outdoor unit
BC Controller
(sub)
Auxiliary
5
units
Hex. unit
BC Controller
(main)
Wiring method Address setting method
•
The same as 1. (3)
The same as 1. (1)
The same as 1. (1)
The same as 1. (1)
The same as 1. (1)
Address
Setting method
setting range
• Set the lowest address within
a same group to the indoor unit
desired to be the main unit.
• 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:
IC 01 ~ 50
(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)
Set to the main unit address wit-
hin a same group in serial order
[Main unit +1, +2, +3, .... ]
Set any address after setting al
LC 01 ~ 50
indoor units.
MA Not required
MA Not required Set with main/sub selector switch.
The lowest address of indoor unit
OC 51 ~ 100
within refrigerant system + 50
Use the address that equals the
sum of the smallest indoor unit
address out of all the indoor
BS
units that are connected to the
sub BC controller and 50.
52 ~ 100
OS
Outdoor unit address +1
BC
- 28 -
Caution
• 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.
• Requires a branch-num-
ber setting.
l • Set the address not to be
overlapped with the indoor
unit address.
–
• 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.
) of the electrical parts box.
Factory
setting
00
00
Main
00