Mitsubishi Electric City Multi PUHY-HP144TSHMU-A, Service Handbook

Page: 48 / 265

[
II
Restrictions ]
39 - 39 - HWE0716A GB
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 3.
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) 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) M-NET 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.
5) LOSSNAY connection
Same as [5] 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 and OS.
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 M-NET re-
mote controller.
ΠMake the same indoor unit
group initial settings with the
system controller as the ones
that were made with the MA
remote controller.
Œ
To perform a group operation
of indoor units that have differ-
ent functions, designate the
indoor unit in the group with
the greatest number of func-
tions as the main unit.
00
Sub unit Assign sequential numbers
starting with the address of
the main unit in the same
group +1. (Main unit address
+1, main unit a2,
main unit a3, 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 accord-
ing to the remote controller
function selection
2 Opera-
tion
with the
M-NET
remote
control-
ler In-
door
unit Main unit IC 01 to 50 Assign the smallest ad-
dress to the main unit in
the group.
Œ
Make the indoor unit group ini-
tial settings via the system
controller (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 differ-
ent functions, designate the
indoor unit in the group with
the greatest number of func-
tions as the main unit.
00
Sub unit
Assign sequential numbers
starting with the address of
the main unit in the same
group +1. (Main unit address
+1, main unit a2,
main unit a3, etc.)
M-
NET
re-
mote
con-
troller Main re-
mote con-
troller RC 101 to
150 Add 100 to the main unit ad-
dress in the group. ΠIt is not necessary to set
the 100s digit.
ΠTo 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 ad-
dress 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
OS 51 to 100 Assign sequential address to
the outdoor units in the same
refrigerantcircuit. The out-
door units are automatically
designated as OC and
OS.(Note) To set the address to 100,
set the rotary switches to 50. 00