AirStage ASYE009GTAH Manuel d'installation - Page 7
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Earth (Ground) the unit.
Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a
telephone earth (ground) cable.
Improper earthing (grounding) may cause electric shock.
Do not connect power supply cable to the transmission or remote controller terminals,
as this will damage the product.
Never bundle the power supply cable and transmission cable, remote controller cable
together.
Separate these cable by 50 mm or more.
Bundling these cables together will cause miss operation or breakdown.
When handling PCB, static electricity charged in the body may cause malfunction of the
PCB. Follow the cautions below:
• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor units for more than 10 seconds to discharge static
electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
5.1. Electrical requirement
Voltage rating
Operating range
• Select the power cable type and size in accordance with relevant local and national
regulations.
• Specifications for local wiring power cord and branch wiring are in compliance with local
code.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is long.
Breaker should be installed at every refrigerant system. Do not use a breaker in a different
refrigerant system.
Refer to the table for the breaker specifications of each installation condition. Perform
the power crossover wiring within the range of the same refrigerant system. When the
crossover wiring is done, make a connection for indoor units to satisfy conditions A and B
below.
A. Current breaker requirements
Model
MCA
MFA
AS*A004GTAH
0.16 A
AS*A007GTAH
0.23 A
AS*A009GTAH
0.38 A
AS*E004GTAH
0.16 A
20 A
AS*E007GTAH
0.23 A
AS*E009GTAH
0.38 A
AS*A030GTAH
0.66 A
AS*A034GTAH
0.87 A
B. Earth leakage breaker requirements
Maximum connect-
able "indoor units"
Breaker capacity
or "indoor units +
RB units" *1
30 mA, 0.1 sec or less
44 or less *2
100 mA, 0.1 sec or less
45 to 148
5.1.1 Cable specifi cations
Recommended
cable size (mm²)
Power supply cable
2.5
Transmission cable
0.33
Remote controller
0.33 to 1.25
cable (2-wire type)
*1: Use shielded cable in accordance with local rules for remote controller cable.
CAUTION
230 V
198 to 264 V (50 Hz)
198 to 253 V (60 Hz)
• MCA: Minimum Circuit Ampacity
• MFA: Maximum Fuse Ampacity
When the power crossover wiring is done, make it
so that the total of the MCA of the connected RB
units and indoor units does not exceed the 15 A.
For RB unit MCA, refer to the RB unit installation
manual.
If the capacity of connected RB units and indoor
units exceeds the upper limit, either add breakers
or use a breaker with a greater capacity.
*1: Heat pump type: indoor units,
Heat recovery type: indoor units
and RB units.
*2: If the total number of units con-
nected to the breaker exceeds 44,
either add a 30mA breaker, or use
breakers with a greater capacity.
Cable type
Remark
Type245 IEC57
2 Cable + earth (ground)
or equivalent
LONWORKS
22 AWG LEVEL 4 (NEMA)
compatible
non-polar 2 core, twisted pair
cable
solid core diameter 0.65 mm
Sheathed PVC
Non-polar 2 core, twisted
cable *1
pair
5.2. Wiring method
Example
Outdoor unit or RB unit *1
Transmission
Indoor unit
Remote
Transmission
control
Power supply
*2
Breaker
*3
Power supply
Remote controller
(Master)
*1: When connecting to the Heat Recovery System, refer to the installation manual of the
RB unit.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
*3: The 3-wire type remote controller is not used.
(Crossover wiring of power supply)
Indoor unit
Power supply
Power supply
Pull box
Breaker
Power supply
5.3. Unit wiring
• Before attaching the cable to terminal block.
5.3.1 Power supply cable
20 mm
Earth
L
(ground) cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-
driver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not fix 2 power supply cables with 1 screw.
Strip 25 mm
Screw with
special washer
Cable
Cable end (Loop)
Terminal block
When using solid core cables, do not use the attached ring terminal. If you use the solid
core cables with the ring terminal, the ring terminal's pressure bonding may malfunction
and cause the cables to abnormally heat up.
Indoor unit
Indoor unit
*2
*2
Breaker
Breaker
*3
Remote controller
Remote controller
(Slave)
Indoor unit
Indoor unit
Power supply
Pull box
L (mm)
004/007/009
030/034
model
model
40
Loop
Screw with
special washer
Cable end (Loop)
Cable
WARNING
*3
65
En-6