Electric Wiring Work - Daikin FUY71FJV1 Installation Manual

8.

ELECTRIC WIRING WORK

• All field supplied parts and materials and electric works
must conform to local codes.
• Use copper wire only.
• For electric wiring work, refer also to "WIRING DIAGRAM"
attached to the unit body.
• For remote controller wiring details, refer to the installation
manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• A circuit breaker capable of shutting down power supply to
the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit
for the size of power supply electric wire connected to the
outdoor unit, the capacity of the circuit breaker and switch,
and wiring instructions.
• Be sure to ground the air conditioner
• Do not connect the ground wire to gas pipes, plumbing
pipes, lightning rods, or telephone ground wires.
• Gas pipes: might cause explosions or fire if gas leaks.
• Plumbing: no grounding effect if hard vinyl piping is used.
• Telephone ground wires or lightning rods: might cause
abnormally high electric potential in the ground during
lighting storms.
• Specifications for field wire
The remote control cord should be procured locally. Refer to
the Table 4 when preparing one.
Table 4
Wire
H05VV - U4G
Wiring the units
(NOTE 1)
Vinyl cord with
Remote
sheath or cable
controller cord
(2 wire) (NOTE 2)
NOTE
1. Shows only in case of protected pipes. Use H07RN-F in
case of no protection.
2. Insulated thickness : 1mm or more
<Methods of wiring units and connecting remote control-
ler cords> (Refer to Fig. 32)
• Wiring the units connections
Remove the switch box cover, and align the phases with
those of the power terminal block inside to connect.
Securely fix the wires with the included clamp material A,
then fix them with the clamp material C likewise.
• Remote controller cords connections
(not necessary for slave unit of simultaneous operation sys-
tem)
Connect to the remote controller terminal block. (no polarity)
Securely fix the remote controller cord with the included
clamp material B, then fix it with the clamp material D like-
wise.
How to connect wiring
Clamp B
Blue
Blue
Remote controller cord
Wiring the units
1 2 3
Clamp A
Ground terminal
How to connect power supply
terminal board (4P)
11
Size (mm ) Length
2
2.5 —
Max.
0.75 - 1.25
500m
Terminal board for remote
controller (2P)
Tab
Clamp C and D
Clamp D
Remote controller
transmission wire
Power supply
Power supply wire
terminal
board (4P)
Clamp C
Fig. 32
CAUTION
• When clamping wiring, use the included clamping material
to prevent outside pressure being exerted on the wiring con-
nections and clamp firmly. When doing the wiring, make
sure the wiring is neat and does not cause the control box
lid to stick up, then close the cover firmly.
• When attaching the control box lid, make sure you do not
pinch any wires.
• After all the wiring connections are done, fill in any gaps in
the through holes with putty or insulation (procured locally)
to prevent small animals and insects from entering the unit
from outside. (If any do get in, they could cause short cir-
cuits in the electric box.)
• Outside the machine, separate the weak wiring (remote con-
trol cord) and strong wiring (interunit, ground, and other
power wiring) at least 50 mm so that they do not pass
through the same place together. Proximity may cause elec-
trical interference, malfunctions, and breakage.
CAUTION
• Do not connect wires of different gauge to the same power
supply terminal.
(Looseness in the connection may cause overheating.)
• Observe the notes when wiring to the power supply terminal
board.
(Use a round crimp-style terminal with insulation sleeve for
connection to the power supply terminal board. In case it
cannot be used due to unavoidable reasons, connect wires
of the same gauge to the both side as shown in Fig. 33.)
Attach insulation sleeve
Round
crimp-style
terminal
Connect wires of Do not connect wires
of the same gauge to
the same gauge to
both side.(GOOD) one side.(WRONG)
Fig. 33
Follow the instructions below if the wiring gets very hot
due to slack in the power wiring.
• In wiring, make certain that prescribed wires are used, carry
out complete connections, and fix the wires so that outside
forces are not applied to the terminals.
• Use the correct screwdriver for tightening the terminal
screws. If the blade of screwdriver is too small, the head of
the screw might be damaged, and the screw will not be
properly tightened.
• If the terminal screw are tightened too hard, screws might
be damaged.
• Refer to the table below for the tightening torque of the ter-
minal screws.
Tightening torque (N
Terminal block for remote
controller
Terminal block for wiring the
units
Earth terminal
Electric wire
Do not connect
wires of different
gauges.(WRONG)
·
m)
0.79 to 0.97
1.18 to 1.44
1.44 to 1.94
English