Mitsubishi Electric PURY-P200, Service Handbook

Page: 27 / 224

- 24 -
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
Wiring method
•
Address setting method
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:
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)
d. LOSSNAY connection
❉
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
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
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)
• 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.