En-10
6. 3. Selecting power supply cable and breaker
CAUTION
Regulation of cable size and circuit breaker diff ers from each locality, please refer in
accordance with local rules.
Refer to the table for the wiring and breaker specifi cations of each installation condition.
MODEL
Breaker (Time delay fuse or circuit capacity)
Fuse capacity (A) Leakage current
AJT040LCLAH 32
30mA
0.1sec or less
AJT045LCLAH 32
AJT054LCLAH 32
MODEL
Outdoor unit power supply cable
Recommended cable size (mm
2
)
Limited wiring
length (m)
Power cable Earth cable
AJT040LCLAH 6 4 18
AJT045LCLAH 6 4 18
AJT054LCLAH 6 4 18
1) These values are recommended data.
2) Specifi cation: Use conformed cord with Type 60245 IEC66
Remarks : 230V ~ 50Hz 2Wire+ground
3) Max. cable length: Set a length so that the voltage drop is less than 2%. Increase
the cable diameter when the cable length is long.
Fig. In case of connected outdoor unit
GOOD
Transmission cable
Remote controller
cable
Breaker
230 V 1ø 50 Hz
Breaker
230 V 1ø 50 Hz
Outdoor unit
Power supply cable
Indoor unit
Power supply
cable
6. 4. Transmission line
CAUTION
• Caution when wiring cable
When stripping off the coating of lead wire, always use the exclusive tool such
as a wire stripper. If there is no exclusive tool available necessarily, carefully
strip the coating by a cutter etc. so that the conductive wire is not damaged.
If it is damaged, it may lead to an open circuit and a communication error.
• Pay attention to the following points while attaching wires on the terminal board.
Do not attach 2 wires on one side.
Do not twist wires.
Do not cross the wires.
Do not shorted at edge at root.
PROHIBITED
GOOD
PROHIBITED
PROHIBITED PROHIBITED
GOOD
2pcs at one side
Shorted at edge
Wires twisted
Shorted at root
1 wire
2 wires
6. 4. 1. Transmission wiring specifi cations
Follow the specifi cations below for the transmission cable.
Use Size Cable type Remarks
Transmission cable 0.33mm
2
22AWG LEVEL 4 (NEMA)
non-polar 2core, twisted pair
solid core diameter 0.65mm
LONWORKS ®
compatible cable
Twisted pair with shielded type.
Use the shielded wire specifi ed and always ground it both end.
6. 4. 2. Wiring rules
(1)Total length of transmission cable
Total transmission line length: MAX 3600m
EF+EG+GH+HJ+HK+KL < 3600m (Fig.2)
In the following cases , Signal Amplifi er is required.
1
When the total length of the transmission line exceeded 500m.
AB+BC+BD > 500m (Fig.1)
2
When the total number of units* is over 64.
3
Transmission line length between each unit* ≥ 400m
(2)Length of transmission cable between 1 network segment (NS)
EF+EG+GH+HJ+HK ≤ 500m (Fig.2)
KL ≤ 400m (Fig.2)
Unit* means indoor unit, outdoor unit, Touch Panel Controller and System Controller,
Signal Amplifi er, single split adaptor, Network Convertor etc..
Fig. 1
Transmission line
Outdoor unit
Indoor unit
System
Controller
Touch
Panel
Controller
Terminal
resistor
When AB+BC+BD>500m
:Signal Amplifi er is required.
A
B
C
D
Fig. 2
Outdoor unit
Indoor unit
Signal Amplifi er
System
Controller
Touch
Panel
Controller
Transmission line
Terminal resistor
Terminal resistor
NS 1
NS 2
F
H
L
G
K
J
E
NOTE:
Do not use loop wiring. This may lead to parts damage and erroneous opera-
tion.
9380545149-02_IM_EN.indd 109380545149-02_IM_EN.indd 10 9/7/2021 1:38:54 PM9/7/2021 1:38:54 PM
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