Mitsubishi Electric PURY-P200 Service Handbook page 33

a. Indoor/outdoor transmission line
Connect terminals M1 and M2 of the indoor-outdoor transmission line terminal block (TB3) on the outdoor unit (OC)
to the terminals M1 and M2 of the indoor-outdoor transmission terminal block (TB02) of the main BC controller (BC)
and the sub BC controller (BS) and terminals M1 and M2 of the indoor-outdoor transmission terminal block (TB5) on
each indoor unit (IC).
❉ Make sure to use shielded wire.
Connection of shielded wire:
b. Centralized control transmission line
Connection of shielded wire
c. MA remote controller wiring
For 2-remote controller operation:
For indoor group operation:
d. LOSSNAY connection
e. Switch setting
Order Unit or controller
Main unit
1 Indoor unit
Sub unit
2 LOSSNAY
Main unit
MA remote
3
controller
Sub unit
4 Outdoor unit
BC Controller
(sub)
Auxiliary
5
units
BC Controller
(main)
Wiring method Address setting method
•
The same as 1. (1)
The same as 1. (4)
The same as 1. (4)
The same as 1. (1)
The same as 1. (1)
The same as 1. (1)
The same as 1. (4)
Address setting is required as listed below.
Address
Setting method
setting range
• Assign the smallest address
within the group to the indoor
unit to become 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 all
indoor units.
LC 01 ~ 50
MA Not required
MA Sub unit 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
Outdoor unit address +1
BC
- 30 -
Caution
• R2 types require a branch
number setting.
• Set the address not to be
overlapped with the indoor
unit address.
• Using the system controller,
–
make the same indoor group
setting that was made with
the MA remote controller.
• 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.
Factory
setting
00
00
Main
00