6
SW14
SW11
SW12
1 2 3 4 5 6 7 8 9 10
ON
OFF
SW1
SWC
CN82
CN43
3
2
SWA
1
0 1
2
3
4
5
6
7
8
9
0 1
2
3
4
5
6
7
8
9
0 12
3
4
5
67
89
AB
C
D
EF
(10ths DIGIT)
(1s DIGIT)
. /
.
(BRANCH No.)
TB5
TB15 TB5
TB15
S
M1 M2
S
M1 M2
TB3
M1 M2
2
1
2
1
TB5
TB5
S
M1 M2
S
M1 M2
TB3
M1 M2
TB5
CN90
Pair No.
0
Pair No.
0
Pair No.
0
9
9
CN90
TB15
TB5
TB15
S
M1 M2
S
M1 M2
TB3
M1 M2
2
1
2
1
1 2
M1 M2 S
TB2
TB5
TB15
L N
6. Electrical work
Fig. 6-3
[Fig.6-2]
A
Switch 16 A
D
Total operating current be less than 16 A
B
Overcurrent protection 16 A
E
Pull box
C
Indoor unit
6.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire CVVS or CPEVS
Cable diameter
More than 1.25 mm²
Length
Less than 200m
2. M-NET Remote control cables
Types of remote control cable Shielding wire MVVS
Cable diameter
0.5 to 1.25 mm²
Length
Add any portion in excess of 10m to within the
longest allowable transmission cable length 200m
3. MA Remote control cables
Types of remote control cable 2-core cable (unshielded)
Cable diameter
0.3 to 1.25 mm²
Length
Less than 200m
6.4. Connecting remote controller, indoor and out-
door transmission cables (Fig. 6-3)
• Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The “S” on indoor unit TB5 is a shielding wire connection. For specifications
about the connecting cables, refer to the outdoor unit installation manual.
• Install a remote controller following the manual supplied with the remote control-
ler.
• Connect the remote controller’s transmission cable within 10 m using a 0.75 mm²
core cable. If the distance is more than 10 m, use a 1.25 mm² junction cable.
1
MA Remote controller
• Connect the “1” and “2” on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
• DC 9 to 13 V between 1 and 2 (MA remote controller)
2
M-NET Remote controller
• Connect the “M1” and “M2” on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
3
Wireless remote controller(When installing wireless signal receiver)
• Connect the wire of wireless signal receiver (9-pole cable) to CN90 of indoor con-
troller board.
• When more than two units are run under group control using wireless remote
controller, connect TB15 each with the same number.
• To chang Pair No. setting, refer to installation manual attached to wireless remote
controller. (In initial setting of indoor unit and wireless remote controller, Pair No.
is 0.)
A
Terminal block for indoor transmission cable
B
Terminal block for outdoor transmission cable(M1(A), M2(B),
(S))
C
Remote controller
D
wireless signal receiver
E
wireless remote controller
6.5. Setting addresses (Fig. 6-4)
(Be sure to operate with the main power turned OFF.)
• There are 2 types of rotary switch setting available: setting addresses 1 to 9 and
over 10, and setting branch numbers.
1
How to set addresses
Example: If Address is “3”, remain SW12 (for over 10) at “0”, and match
SW11(for 1 to 9) with “3”.
2
How to set branch numbers SW14 (Series R2 only)
Match the indoor unit’s refrigerant pipe with the BC controller’s end connection
number.
Remain other than series R2 at “0”.
• The rotary switches are all set to “0” when shipped from the factory. These
switches can be used to set unit addresses and branch numbers at will.
• The determination of indoor unit addresses varies with the system at site. Set
them referring to the Data Book.
A
Address board
Fig. 6-4
Fig. 6-2
01̲RG79D452H01̲EN.indd 6
01̲RG79D452H01̲EN.indd 6
2008/08/08 15:50:00
2008/08/08 15:50:00