Selecting Circuit Breaker And Wiring; Knock Out Holes For Wiring; Wiring Method - Fujitsu AOYG36LATT Installation Manual

6.2. Selecting circuit breaker and wiring

Be sure to install a breaker with specified capacity.
Before the electrical working, confirm electrical standards and regulations in each country,
region, or installing place. Then select appropriate cables and breakers that comply with them.
Decide the diameter of wire referring to below table "Breaker and wiring specifications" in
accordance with local and national codes.
Breaker and wiring specifications
Breaker Power supply cable
capacity
Conductor size
[mm²]
[A]
16 2.5 (Min.)
*: If the transmission wire is longer than 50 m, use the bigger conductor size.
• 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.
• Use confirmed cable with type 60245 IEC 57.
• Install a circuit breaker with a contact gap of at least 3 mm in all poles nearby the units.
(Both indoor units and outdoor units)

6.3. Knock out holes for wiring

Be careful not to deform or scratch the panel while opening the knock out holes.
When cables are routed from the unit, a protection sleeve for the conduits can be
inserted at the knock out hole.
If you do not use a wire conduit, be sure to protect the wires to prevent the edge of the
knock out hole from cutting the wires.
It is recommended to apply anti-rust paint to the edge of the knock out hole.
• Knock out holes are provided for wiring. (Fig. A)
• Knock out holes are provided 2 each in the same size in front, lateral and rear sides.
(Fig. B)
Fig. A
Fig. B
Installation method of One-touch bush
Please fix the One-touch bush (accessory) as shown in the figure below.
Front connection Lateral connection
(Pipe cover front)
One-touch cable bush One-touch cable bush
(Accessories) (Accessories)
Note : Please ensure that the power cable and interconnecting cables are not installed
through the same cable bush hole opening. They must be installed into the two
separate hole openings to prevent damage to the cable.
CAUTION
Transmission cable*
Max. length
Conductor size
[mm²] [m]
1.5 (Min.)
75
CAUTION
Rear connection
(Pipe cover rear)
One-touch cable bush
(Accessories)

6.4. Wiring method

6.4.1. Connection diagrams
Control line
Power line
3
2
1
Earthing (Grounding) line
EARTH
(GROUND)
Indoor unit
side terminal
6.4.2. Connection cable preparation
Keep the earth (ground) wire longer than the other wires.
40 mm
Earth (Ground) wire
6.4.3. Wiring procedure
(1) Remove the service panel cover, insulation sheet and connect the wires to the
terminal in accordance with the terminal nameplate. (Fig. A, Fig. B)
Fig. A
(2) After connecting the wires, use cable clips to secure the wires. (Fig. B)
• Connect the wires without applying excessive tension.
Fig. B
Control box
Terminal blocks
Cable clip
Firmly secure the
cable clips so that the
wire terminals will not
receive external stress.
POWER SUPPLY
(R) (S) (T) N
EARTH
(GROUND)
N
L3
L2
L1
3
2
1
EARTH
(GROUND)
Outdoor unit
side terminal
Power supply cable or
Transmission cable
60 mm or more
Direction of the service
panel removal
Terminal blocks
Service panel
Cable clip
Use the specified wire
type and connect the
wires securely.
En-11