Mitsubishi Electric PUHY-RP200 Service Handbook page 46

[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Only use shielded cables.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Daisy-chain terminals A and B on the system controller,
terminals M1 and M2 on the terminal block for transmis-
sion line for centralized control (TB7) on the outdoor
units (OC) in different refrigerant circuits and on the out-
door units (OC, OS1, and OS2) in the same refrigerant
circuit.
If a power supply unit is not connected to the transmis-
sion line for centralized control, replace the power jump-
er connector on the control board from CN41 to CN40 on
only one of the outdoor units.
If a system controller is connected, set the central control
switch (SW2-1) on the control board of all outdoor units
to "ON."
The outdoor units in the same refrigerant circuit are au-
tomatically designated as OC, OS1, and OS2 in the or-
der of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
ŒOnly use shielded cables.
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor Main unit
unit
Sub unit
2 LOSSNAY
3 MA Main
remote remote
controller controller
Sub
remote
controller
4 Outdoor unit
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010
Address
setting
range
IC 01 to 50 Assign the smallest ad-
dress to the main unit in
the group.
Assign sequential num-
bers starting with the ad-
dress of the main unit in
the same group +1. (Main
unit address +1, main unit
address +2, main unit ad-
dress +3, etc.)
LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assign-
ing an address to all in-
door units.
MA No
settings re-
quired.
MA Sub Settings to be made ac-
remote con- cording to the remote
troller controller function selec-
tion
OC 51 to 100 Assign sequential address
to the outdoor units in the
OS1
same refrigerant circuit.
OS2
The outdoor units are auto-
matically designated as
OC, OS1, and OS2.(Note)
- 37 - 37
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal (
and the S terminal on the terminal block (TB7) on the out-
door unit whose power jumper connector is mated with
CN40.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the sys-
tem
Same as [5] 1.
Group operation of indoor units
Same as [5] 1.
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block for indoor-outdoor transmission line
(TB5) on LOSSNAY (LC). (Non-polarized 2-core cable)
ŒIndoor units must be interlocked with the LOSSNAY unit
using the system controller. (Refer to the operation man-
ual for the system controller for the setting method.) In-
terlock setting from the remote controller is required if the
ON/OFF remote controller alone or the LM adapter alone
is connected.
5) Switch setting
Address setting is required as follows.
Setting method
To perform a group oper-
ation of indoor units that
have different functions,
designate the indoor unit
in the group with the
greatest number of func-
tions as the main unit.
None of these addresses
may overlap any of the in-
door unit addresses.
- Enter the same indoor
unit group settings on the
system controller as the
ones that were entered
on the MA remote con-
troller.
To set the address to
100, set the rotary switch-
es to 50.
)
Factory
Notes
setting
00
00
Main
00
GB