Mitsubishi Electric HP120TNU-A Service Handbook page 54

[2-7 Example System with an MA Remote Controller ]
(5) Address setting method
Pro-
ce-
Unit or controller
dur
es
1 Indoor Main unit IC
unit
Sub unit
2 LOSSNAY
3 MA Main re-
mote
remote
controller
control-
ler Sub re-
mote con-
troller
4 Outdoor unit
5 Auxilia- BC con-
troller
ry unit
(Main)
BC
controller
(Sub)
The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).
HWE18220_GB
Address
setting
range
01 to 50 Assign the smallest address to the main unit in the
group.
In a system with a sub BC controller, make the set-
tings for the indoor units in the following order.
(i) Indoor unit to be connected to the main BC control-
ler
(ii) Indoor unit to be connected to sub BC controller 1
(iii) Indoor unit to be connected to sub BC controller 2
Make the settings for the indoor units in the way that
the formula "(i) < (ii) < (iii)" is true.
When using additional BC controllers (3 to 11 BC
controllers), make the same settings.
Assign sequential numbers starting with the address 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 assigning an address to all indoor units.
MA No set-
tings re-
quired.
MA Sub re- Settings to be made with the Sub/Main switch
mote
controller
OC 51 to 100 The sum of the smallest address of the indoor units in
the same system and 50.
OS
Assign sequential address to the outdoor units in the
same refrigerant circuit.
The outdoor units are automatically designated as
OC and OS.(Note)
BC 51 to 100 OC (or OS if it exists) +1
BS 51 to 100 Assign an address that equals the sum of the smallest
address of the indoor units that are connected to the
sub BC controller and 50.
Setting method
-
Notes
Port number setting is re-
quired
To perform a group opera-
tion of indoor units that
feature 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 indoor unit ad-
dresses.
Make the same indoor unit group
settings with the system controller
as the ones that were made with
the MA remote controller.
To set the address to 100, set
the rotary switches to 50.
To set the address to 100, set
the rotary switches to 50.
If the addresses that is assigned
to the main BC controller over-
laps any of the addresses that
are assigned to the outdoor
units or to the sub BC control-
ler, use a different, unused ad-
dress within the setting range.
The use of a sub BC controller
requires the connection of a
main BC controller.
chapter 2 -
Fac-
tory
set-
ting
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00
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n
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