Mitsubishi Electronics PUHY-P144 User Manual
- 32 -
[
II Restrictions ]
GB
HWE08040
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Only use shielded cables.
Shielded cable connection
Same as [5] 1.
Same as [5] 1.
2) Transmission line for centralized control
Daisy-chain terminals M1 and M2 on the terminal block
for transmission line for centralized control (TB7) on the
outdoor units (OC) in different refrigerant circuits and on
the OC, OS1, and OS2 in the same refrigerant circuit
If a power supply unit is not connected to the transmis-
sion line for centralized control, replace the power jump-
er connector on the control board from CN41 to CN40 on
only one of the outdoor units.
for transmission line for centralized control (TB7) on the
outdoor units (OC) in different refrigerant circuits and on
the OC, OS1, and OS2 in the same refrigerant circuit
If a power supply unit is not connected to the transmis-
sion line for centralized control, replace the power jump-
er connector on the control board from CN41 to CN40 on
only one of the outdoor units.
The outdoor units in the same refrigerant circuit are au-
tomatically designated as OC, OS1, and OS2 in the or-
der of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
tomatically designated as OC, OS1, and OS2 in the or-
der of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal (
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal (
)
and the S terminal on the terminal block (TB7) on the out-
door unit whose power jumper connector is mated with
CN40.
door unit whose power jumper connector is mated with
CN40.
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] 2.
When 2 remote controllers are connected to the sys-
tem
Same as [5] 1.
Group operation of indoor units
Same as [5] 2.
4) LOSSNAY connection
Same as [5] 2.
5) 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.
Proce-
dures
Unit or controller
Address setting
range
Setting method
Notes
Factory
setting
1
Indoor
unit
unit
Main unit
IC
01 to 50
Assign the smallest ad-
dress to the main unit in
the group.
dress to the main unit in
the group.
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.
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.
00
Sub unit
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 ad-
dress +3, etc.)
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 ad-
dress +3, etc.)
2
LOSSNAY
LC
01 to 50
Assign an arbitrary but
unique address to each of
these units after assigning
an address to all indoor
units.
unique address to each of
these units after assigning
an address to all indoor
units.
None of these ad-
dresses may overlap
any of the indoor unit
addresses.
dresses may overlap
any of the indoor unit
addresses.
00
3
MA
re-
mote
con-
troller
re-
mote
con-
troller
Main
remote
controller
remote
controller
MA
No
settings required.
settings required.
-
Main
Sub
remote
controller
remote
controller
MA
Sub
remote controller
remote controller
Settings to be made ac-
cording to the remote con-
troller function selection
cording to the remote con-
troller function selection
4
Outdoor unit
OC
OS1
OS2
OS1
OS2
51 to 100
Assign sequential address
to the outdoor units in the
same refrigerant circuit.
The outdoor units are au-
tomatically designated as
OC, OS1, and OS2.
(Note)
to the outdoor units in the
same refrigerant circuit.
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.
100, set the rotary
switches to 50.
00