Mitsubishi Electric PUHY-P200 Service Handbook page 30

a. Indoor/outdoor transmission line
The same as 1. (3)
Connection of shielded wire:
The same as 1. (1)
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 (
parts box.
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor group operation:
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.
Order Unit or controller
Main unit
1 Indoor unit
Sub unit
2 LOSSNAY
Main unit
MA remote
3
controller Sub unit
4 Outdoor unit
5 Sub unit Hex. unit
Wiring method Address setting method
•
Address
Setting method
setting range
• Set the lowest address within
a same group to the indoor unit
desired to be the main unit.
IC 01 ~ 50 Set to the main unit address
within a same group in serial or-
der.
[Main unit +1, +2, +3, .... ]
Set any address after setting all
LC 01 ~ 50
indoor units.
MA Not required
Set by the main/sub selector
MA Sub unit switch.
The lowest address of indoor
OC unit within refrigerant system
+ 50
51 ~ 100
OS Oundoor unit address + 1
- 28 -
Caution
• Set the address not to be
overlapped with the indoor
unit address.
– • Conduct initial setting by the
system controller with the
same setting detail of indoor
unit applied in MA remote
controller wiring.
• When setting address to
"100," make it "50."
) of the electrical
Factory
setting
00
00
Main
00