Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook page 59

[ II Restrictions ]
(4) Wiring method
1) Indoor-heat source transmission line
Same as [5] 1.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Same as [5] 4.
Shielded cable connection
Same as [5] 4.
3) ME remote controller wiring
ME remote controller is connectable anywhere on the in-
door-heat source transmission line.
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor Main unit
unit
Sub unit
2 LOSSNAY
3 ME re- Main
mote remote
controller controller
Sub
remote
controller
4 Heat source unit
The heat source units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
HWE09080
4) LOSSNAY connection
5) Switch setting
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 address +3,
etc.)
LC 01 to 50 Assign an arbitrary but
unique address to each
of these units after as-
signing an address to all
indoor units.
RC 101 to 150 Add 100 to the main unit
address in the group
RC 151 to 200 Add 150 to the main unit
address in the group
OC 51 to 100 Assign sequential ad-
OS1 dress to the heat source
OS2 units in the same refrig-
erant circuit. The heat
source units are auto-
matically designated as
OC, OS1, and OS2.
(Note)
- 50 -
When 2 remote controllers are connected to the sys-
tem
Refer to the section on Switch Setting.
Performing a group operation (including the group
operation of units in different refrigerant circuits).
Refer to the section on Switch Setting.
Same as [5] 4.
Address setting is required as follows.
Setting method
To perform a group
operation of indoor
units that have differ-
ent functions, desig-
nate the indoor unit in
the group with the
greatest number of
functions as the main
unit.
None of these ad-
dresses may overlap
any of the indoor unit
addresses.
ŒIt is not necessary to
set the 100s digit.
ŒTo set the address
to 200, set the rota-
ry switches to 00.
To set the address to
100, set the rotary
switches to 50.
Factory
Notes
setting
00
00
101
00
GB