7
4.3. Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire CVVS or CPEVS
Cable diameter
More than 1.25 mm² (AWG16)
Length
Less than 200m (656 ft)
2. M-NET Remote control cables
Types of remote control cable Shielding wire MVVS
Cable diameter
0.5 (AWG20) to 1.25 mm² (AWG16)
Length
Add any portion in excess of 10m to within the
longest allowable transmission cable length 200m
(656 ft)
3. MA Remote control cables
Types of remote control cable 2-core cable (unshielded)
Cable diameter
0.3 (AWG22) to 1.25 mm² (AWG16)
Length
Less than 200m (656 ft)
<Example of "F2" calculation>
*Condition PEFY-NMSU × 4 + PEFY-NMAU × 1, C = 8 (refer to right sample chart)
F2 = 18.6 × 4/8 + 38 × 1/8
= 14.05
→
16A breaker (Tripping current = 8 × 16A at 0.01s)
*3 Current sensitivity is calculated using the following formula.
G1 = V2 × (Quantity of Type1) + V2 × (Quantity of Type2) + V2 × (Quantity of Type3) + V2 × (Quantity of Others)
+ V3 × (Wire length[km])
G1
Current sensitivity
30 or less
30 mA 0.1sec or less
100 or less
100 mA 0.1sec or less
Wire thickness (mm
2
/AWG)
V3
2.1/14
48
3.3/12
56
5.3/10
66
6000
600
60
10
Tripping Time [s]
1
0.1
0.01
1
2
Rated Tripping current (x)
3
4
6 8
C
10
20
SAMPLE
Sample chart
Fig. 4-3
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
4.4. Connecting remote controller, indoor and outdoor
transmission cables (Fig. 4-3)
• 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, 33 ft using a
0.75 mm
2
core cable. If the distance is more than 10 m, 33 ft, use a 1.25 mm
2
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 change Pair No. setting, refer to installation manual attached to wireless re-
mote controller. (In the default setting of indoor unit and wireless remote control-
ler, 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
4. Electrical work