Mitsubishi Electric PURY-P200 Service Handbook page 27

a. Indoor/outdoor transmission line
Connection of shielded wire:
b. Centralized control transmission line
No connection is required.
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 the indoor unit (IC) to the terminal
block (TB5) on Lossnay (LC). (with non-polarity two wires)
❉ The interlocking registration of the indoor unit and Lossnay from the remote controller is required. (For the regis-
tration method, see the installation manual of remote controllers.)
e. Switch setting
Address setting is required as listed below.
Order Unit or controller
Main unit
1 Indoor unit
Sub unit
2 LOSSNAY
Main unit
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. (1)
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
indoor units.
LC 01 ~ 50
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
- 24 -
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 controller,
use an unused address
within the setting range.
• The use of a sub BC con-
troller requires a main BC
controller.
Factory
setting
00
00
Main
00