Electric Wiring Work - Daikin VAM-GVJU Manual

EDUS711116
8.

ELECTRIC WIRING WORK

• Shut off the power supply before doing any work.
• All field supplied parts, materials and electric works must
conform to local codes.
• Use copper wire only.
• All wiring must be performed by an authorized electrician.
• See also the "Wiring Diagram label" attached to the control
box cover when laying electrical wiring.
• Wire the remote controller as shown in the wiring diagram
label. See the "Remote Controller Installation Manual" for
details on how to install and lay the wiring for the remote
controller.
Install a ground fault circuit interrupter for the power supply
wiring.
• Make sure the ground resistance is no greater than 100Ω .
This value can be as high as 500Ω when using a ground
fault circuit interrupter since the protective ground resistance
can be applied.
• Do not let the ground wire come in contact with gas pipes,
water pipes, lightning rods, or telephone ground wires.
• Gas pipes: gas leaks can cause explosions and fire.
• Water pipes: cannot be grounded if hard vinyl pipes are
used.
• Telephone ground and lightning rods: the ground poten-
tial when struck by lightning gets extremely high.
• Do not turn on the power supply (wiring interrupter or
ground fault circuit interrupter) until all other work is done.
• Use vinyl cord with sheath or cable (2 wire) of AWG18-16 for
transmission wiring.
CAUTION
Before obtaining access to terminal devices, all power
supply circuits must be interrupted.
English
VAM-GVJU
8-1 PRECAUTIONS WHEN LAYING POWER SUPPLY
WIRING
[PRECAUTION]
1. A circuit breaker capable of shutting down power supply to
the entire system must be installed.
2. A single switch can be used to supply power to units on the
same system. However, branch switches and branch cir-
cuit breakers must be selected carefully.
3. Fit the power supply wiring of each unit with a disconnect
switch as shown in the drawing below.
4. Be sure to give the electric grounding connection.
5. Tightening torque for the terminal screws.
• 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 screws are tightened too hard, screws
might be damaged.
• Refer to the table below for the tightening torque of the
terminal screws.
Terminal block for remote controller/
Transmission wiring (X2M)
Power supply terminal block (X1M)
Ground terminal (M4)
6. Connect round crimp-style terminals provided with insula-
tion sleeves to the terminal block for power supply.
Be sure to follow the instructions provided below if the
specified terminals cannot be used.
Otherwise, abnormal heat may be generated as a
result of the loosening of the wires.
Attach insulation sleeve
Round crimp-style terminal
Connect the wires Do not connect a
evenly. wire to the single
side only.
7. Do not connect wires of different gauge to the same
grounding terminal. Looseness in the connection may
deteriorate protection.
8. Keep the power supply wiring distant from other wires to
prevent noise.
Installation Manual
Tightening torque (ft·lbf)
0.59 – 0.71
0.88 – 1.06
1.07 – 1.43
Electric wire
Do not connect wires
different from each
other in diameter.
8
3P034928-7Q
23