Electrical Wiring - Fujitsu Ceiling Type Installation Manual

Top view
Drain pan
100mm
Drain hose
Hose opening view
Wind the attached heat insulation around the
hose band. Make sure the alignment is on top.
A. Floor type
Be sure to arrange the drain hose so that it is leveled lower than the drain hose connect-
ing port of the indoor unit.
Good
Arrange the drain
Drain
hose
hose lower than
this portion.
Do not install the unit so that the drain hose side is too high. Height A should be less
than 5 mm.
No good
B. Ceiling type
Be sure to arrange the drain hose so that it is leveled lower than the drain hose connect-
ing port of the indoor unit.
Good
Arrange the drain
hose lower than
this portion.
Drain hose
When drain hose is arranged backward.
Secure the drain hose with the VT wire.
VT wire
hole
Pass the drain hose Cut the grille
through here.

6. ELECTRICAL WIRING

Cable Cable size (mm 2
Connection cable 1.5 (MIN.)
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
For simultaneous multi
Conductor size (mm
Bus wire 0.3 (MIN.)
This length shall be the total extended length in the system of the group
(Total length of bus wire and remote controller cable.)
Drain hose insulation
(Accessories)
No good No good
Lift up
CAUTION
No good
Drain hose
A A
No good
Base (Bottom)
VT wire
Intake grille
Drain hose
) Type Remarks
Type 60245 IEC57 3Cable+Ground, 1φ230V
) Max length (m)
2
500*
.
Electrical work must be performed in accordance with this Manual by a person certifi ed
under the national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insuffi cient power supply circuit or improperly performed electrical work can cause
serious accidents such as electric shock or fi re.
Before starting work, check that power is not being supplied to the indoor unit and
outdoor unit.
Use the included transmission cables and power cables or ones specifi ed by the
manufacturer. Improper connections, insuffi cient insulation, or exceeding the allowable
current can cause electric shock or fi re.
For wiring, use the prescribed type of wires, connect them securely, making sure that
there are no external forces of the wires applied to the terminal connections. Improp-
erly connected or secured wires can cause serious accidents such as overheating the
terminals, electric shock, or fi re.
Do not modify the power cables, use extension cables, or use any branches in the wir-
ing. Improper connections, insuffi cient insulation, or exceeding the allowable current can
cause electric shock or fi re.
Match the terminal block numbers and connection cable colors with those of the outdoor
unit or branch box. Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal blocks. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fi re.
Always fasten the outside covering of the connection cable with the cable clamp. (If the
insulator is chafed, electric leakage may occur.)
Securely install the electrical box cover on the unit. An improperly installed electrical box
Trap
cover can cause serious accidents such as electric shock or fi re through exposure to
dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit
could result.
Install a earth leakage breaker. In addition, install the earth leakage breaker so that the
entire AC main power supply is cut off at the same time. Otherwise, electric shock or fi re
could result.
Always connect the earth wire.
Improper grounding work can cause electric shocks.
Install the remote controller cable and bus wire so as not to be direct touched with your
hand.
(1) Use ring terminals with insulating sleeves as shown in the fi gure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the wires using an appropriate tool so that the
wires do not come loose.
(3) Use the specifi ed wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) 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.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table 1 for the terminal screw tightening torques.
Lift up
Wire
Table 1
M4 screw
Use crimp-type terminals, and tighten the terminal screws to the specifi ed torques. Other-
wise, overheating may be produced, and possibly cause heavy damage inside the unit.
WARNING
Ring terminal
Sleeve
Screw with
special washer
Screw with spe-
cial washer
Ring terminal
Ring
terminal
Wire
Terminal
board
Terminal block
Tightening torque
1.2 to 1.8 N·m (12 to 18 kgf·cm)
WARNING
En-6