Mitsubishi Electric PUHY-HP120TNU-A, Service Handbook

Page: 52 / 324

[2-9 Example System with an MA and an ME Remote Controller ]
HWE18240_GB
chapter 2 -
25
2 Restrictions
(4) Wiring method
1) Indoor/outdoor transmission line
Same as 2-7-1
Shielded cable connection
Same as 2-7-1
2) Transmission line for centralized control
Same as 2-7-4
Shielded cable connection
Same as 2-7-4
3) MA remote controller wiring
Same as 2-7-1
When 2 remote controllers are connected to the sys-
tem
Same as 2-7-1
Group operation of indoor units
Same as 2-7-1
4) ME remote controller wiring
Same as 2-8-1
When 2 remote controllers are connected to the sys-
tem
Same as 2-7-1
Group operation of indoor units
Same as 2-7-1
5) LOSSNAY connection
Same as 2-7-4
6) Switch setting
Address setting is required as follows.
(5) Address setting method
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).
Proce-
dures
Unit or controller
Address
setting
range
Setting method Notes
Factory
setting
1 Opera-
tion
with the
MA re-
mote
control-
ler In-
door
unit Main unit IC 01 to 50 Assign the smallest address
to the main unit in the group.
Œ
Assign an address smaller
than that of the indoor unit
that is connected to the ME
remote controller.
Œ
Enter the same indoor unit
group settings on the system
controller as the ones that
were entered on the MA re-
mote controller.
Œ
To perform a group operation
of indoor units that have dif-
ferent functions, designate
the indoor unit in the group
with the greatest number of
functions as the main unit.
00
Sub unit Assign sequential num-
bers starting with the ad-
dress of the main unit in
the same group +1. (Main
unit a1, main unit
a2, main unit ad-
dress +3, etc.)
MA
re-
mote
con-
troller Main re-
mote con-
troller MA No
settings
required. - Main
Sub
remote
controller MA Sub
remote
controller Settings to be made ac-
cording to the remote con-
troller function selection
2 Opera-
tion
with the
ME re-
mote
control-
ler In-
door
unit Main unit IC 01 to 50 Assign the smallest ad-
dress to the main unit in
the group.
Œ
Enter the indoor unit group
settings on the system con-
troller (MELANS).
Œ
Assign an address larger than
those of the indoor units that
are connected to the MA re-
mote controller.
Œ
To perform a group operation
of indoor units that have dif-
ferent functions, designate
the indoor unit in the group
with the greatest number of
functions as the main unit.
00
Sub unit Assign sequential num-
bers starting with the ad-
dress of the main unit in
the same group +1. (Main
unit a1, main unit
a2, main unit ad-
dress +3, etc.)
ME re-
mote
con-
troller Main re-
mote con-
troller RC 101 to
150 Add 100 to the main unit
address in the group.
Œ
It is not necessary to set
the 100s digit.
Œ
To set the address to 200,
set the rotary switches to
00.
101
Sub
remote
controller RC 151 to
200 Add 150 to the main unit
address in the group.
3 LOSSNAY LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning
an address to all indoor
units. None of these addresses
may overlap any of the in-
door unit addresses. 00
4 Outdoor unit OC
OS1
OS2 51 to 100 Assign sequential address
to the outdoor units in the
same refrigerantcircuit.
The outdoor units are au-
tomatically designated as
OC, OS1, and OS2. (Note) To set the address to 100,
set the rotary switches to 50. 00