20
GB
D
F
I
NL
E
P
GR
RU
TR
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
i.
When using a transmission booster (RP)
• Let the number of indoor units and remote control units connected be within the limit for the number of units shown in the following table for the total number of units
connected between the outdoor unit (OC) and the transmission booster (RP) N
1
and the number of units connected after the transmission booster (RP) N
2
.
• Connect the power supply ground to the transmission booster (RP) securely.
Connect the transmission lines of the outdoor unit side to terminals A and B of transmission line terminal block 1 (TB2) of the transmission booster (RP).
Connect the transmission lines of the expansion indoor unit side to terminals A and B of the of transmission line terminal block 2 (TB3) of the transmission booster (RP).
The number of indoor units and the total number of remote controllers is displayed within the parenthesis (
).
*1 If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or higher”.
<Branch Setting> *Case of R2/WR2/BIG-R2 series
Set the indoor unit branch No. switch to the branch No. of the BC controller connecting the piping and that indoor unit.
When using two or more branches, set the lowest branch No.
The indoor unit capacity that can be connected per branch is P80 or less and the number of connectable units is 3.
<Permissible Lengths>
1
M-NET Remote controller
•
Max length via outdoor units: L
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
3
+L
5
and L
1
+L
2
+L
6
+L
7
=
500 m (1.25 mm
2
or more)
•
Max transmission cable length: L
1
and L
3
+L
4
and L
3
+L
5
and L
6
and L
2
+L
6
and L
7
=
200 m (1.25 mm
2
or more)
•
Remote controller cable length:
r
1
,
r
2
,
r
3
,
r
4
=
10 m (0.3 to 1.25 mm
2
)
If the length exceeds 10 m, use a 1.25 mm
2
shielded wire. The length of this section (L
8
) should be included in the calculation of the
maximum length and overall length.
2
MA Remote controller
•
Max length via outdoor unit (M-NET cable): L
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
6
+L
7
=
500 m (1.25 mm
2
or more)
•
Max transmission cable length (M-NET cable): L
1
and L
3
+L
4
and L
6
and L
2
+L
6
and L
7
=
200 m (1.25 mm
2
or more)
•
Remote controller cable length:
c
1
and
c
1
+
c
2
+
c
3
and
c
1
+
c
2
+
c
3
+
c
4
=
200 m (0.3 to 1.25 mm
2
)
3
Transmission booster
•
Max transmission cable length (M-NET cable):
1
L
1
+L
2
+L
3
+L
5
+L
6
=
200 m (1.25 mm
2
)
2
L
1
+L
2
+L
3
+L
5
+L
7
=
200 m (1.25 mm
2
)
3
L
1
+L
2
+L
4
=
200 m (1.25 mm
2
)
4
L
6
+L
5
+L
3
+L
4
, L
4
+L
3
+L
5
+L
7
=
200 m (1.25 mm
2
)
•
Remote controller cable length:
r
1
,
r
2
=
10 m (0.3 to 1.25 mm
2
)
If the length exceeds 10 m, use 1.25 mm
2
shielded cable and calculate the length of that portion (L
4
and L
7
) as within the total extended
length and the longest remote length.
10.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example)
[Fig. 10.4.1]
(P.9)
A
Switch (Breakers for wiring)
B
Breakers for current leakage
C
Outdoor unit
D
Outdoor unit (Variable capacity unit)
E
Outdoor unit (Constant capacity unit)
F
Indoor unit
G
Pull box
H
Transmission booster
Å
Å
Å
Å
Å
Note:
1. The transmission booster may be required according to the number of indoor units connected.
2. For switch capacity, see the installation manual for transmission booster.
Remote controller
MA R/C
M-NET R/C
32
20 (40)
26
16 (32)
(*1)
Capability of the
connected indoor units
Remote controller type
Number of connected indoor units that can be
connected without a RP
200 or lower
200 or higher
No OS
One OS
No OS
One OS
Unit
Range
Setting Method
IC (Main)
01 to 50
Use the most recent address within the same group of indoor units. Make the indoor units address connected to the
BC controller (Slave) larger than the indoor units address connected to the BC controller (Master) (*1)
IC (Sub)
01 to 50
Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must
be in sequence with the IC (Main)
Outdoor Unit
51 to 100
Use the most recent address of all the indoor units plus 50
(Variable capacity unit)
Outdoor Unit
(Constant capacity unit)
51 to 100
Variable capacity unit address plus 1
BC controller (Master) (*2)
51 to 100
Outdoor unit address plus 1. When the set indoor unit address duplicates the address of another indoor unit, set the
new address to a vacant address within the setting range.
BC controller (Slave) (*1)
51 to 100
Lowest address within the indoor units connected to the BC controller (slave) plus 50
M-NET R/C (Main)
101 to 150
Set at an IC (Main) address within the same group plus 100
M-NET R/C (Sub)
151 to 200
Set at an IC (Main) address within the same group plus 150
MA R/C
–
Unnecessary address setting (Necessary main/sub setting)
*1: Case of BIG-R2 series, *2: Case of R2/WR2/BIG-R2 series
