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Mitsubishi Electric PURY-HP72 Service Handbook page 44

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[2-7 Example System with an MA Remote Controller ]
(4) Wiring method
1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block
for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS), of the terminal block for indoor-out-
door transmission line (TB02) on the main BC controller
(BC), and of the terminal block for indoor-outdoor trans-
mission line (TB5) on each indoor unit (IC). (Non-polar-
ized two-wire)
Only use shielded cables.
The outdoor units in the same refrigerant circuit are au-
tomatically designated as OC and OS in the order of ca-
pacity from large to small (if two or more units have the
same capacity, in the order of address from small to
large).
Shielded cable connection
Daisy-chain the ground terminal (
units (OC and OS), the S terminal of the terminal block
(TB02) on the BC controller (BC), and the S terminal of
the terminal block (TB5) on the indoor unit (IC) with the
shield of the shielded cable.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Connect terminals 1 and 2 on the terminal block for MA
remote controller line (TB15) on the indoor unit (IC) to the
terminal block on the MA remote controller (MA).
(Non-polarized two-wire)
When 2 remote controllers are connected to the sys-
tem
When 2 remote controllers are connected to the system,
connect terminals 1 and 2 of the terminal block (TB15) on
the indoor unit (IC) to the terminal block on the two MA
(5) Address setting method
Proce-
Unit or controller
dures
1
Indoor unit
Main unit
Sub unit
2
LOSSNAY
3
MA
Main
remote con-
remote con-
troller
troller
Sub
remote con-
troller
4
Outdoor unit
5
Auxiliary
BC
outdoor unit
controller
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).
HWE13080
4) LOSSNAY connection
) on the outdoor
5) Switch setting
Address set-
Setting method
ting range
IC
No settings
required.
IC
LC
No settings
required.
MA
No settings
required.
MA
Sub
Settings to be
remote con-
made with the
troller
Sub/Main
switch
OC
No settings
OS
required.
BC
No settings
required.
- 33 -
33
remote controllers.
Set one of the MA remote controllers as a sub controller.
(Refer to the Instruction Manual for the MA remote con-
troller for the setting method.)
Group operation of indoor units
To perform a group operation of indoor units (IC), daisy-
chain terminals 1 and 2 on the terminal block (TB15) on
all indoor units (IC) in the same group, and then connect
terminals 1 and 2 on the terminal block (TB15) on the in-
door unit on one end to the terminal block on the MA re-
motecontroller. (Non-polarized two-wire)
When performing a group operation of indoor units that
have different functions, "Automatic indoor/outdoor ad-
dresssetup" is not available.
Connect terminals M1 and M2 on the terminal
block(TB5) on the indoor unit (IC) to the appropriate ter-
minals on the terminal block (TB5) on LOSSNAY (LC).
(Non-polarized two-wire)
Interlock operation setting with all the indoor units in the
same system will automatically be made. (It is required
that the Lossnay unit be turned on before the outdoo-
runit.)
For information about certain types of systems (1. Sys-
tems in which the LOSSNAY unit is interlocked with only
part of the indoor units, 2. Systems in which the LOSS-
NAY unit is operated independently from the indoor
units, 3. Systems in which more than 16 indoor units are
interlocked with the LOSSNAY unit, and 4. Systems to
which two ore more LOSSNAY units are connected), re-
fer to the following page(s). [2-7-2 Single Refrigerant
System with Two or More LOSSNAY Units](page 34)
Address setting is required as follows.
Notes
-
Port number setting is required
For information about how to per-
form a group operation of indoor
units that feature different func-
tions, refer to the following
page(s). [2-7-2 Single Refrigerant
System with Two or More LOSS-
NAY Units](page 34)
-
-
It is not possible to connect a pair
of PAR-30MAAU.
-
-
Factory
setting
00
00
Main
00
00
GB

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