Daikin VAM Series Engineering Data page 130

Installation Manual
6
ELECTRIC WIRING WORK
Shut off the power before doing any work.
All field supplied parts and materials, electric works must
conform to local codes.
Use copper wire only.
All wiring must be performed by an authorized electrician.
See also the "Electrical Wiring Diagram label" attached to the
electric parts box lid when laying electrical wiring.
Wire the remote controller as shown in the electric 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 wiring interrupter or ground-fault circuit interrupter for
the power wiring.
Make sure the ground resistance is no greater than 100 .
This value can be as high as 500 when using a ground fault
circuit interrupter since the protective ground resistance can be
applied.
Do no let the ground wire should come in contact with gas
pipes, water pipes, lighting 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 potential
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.
CAUTION
Before obtaining access to terminal devices, all power supply
circuits must be interrupted.
6-1 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 circuit
breakers must be selected carefully.
3. Fit the power supply wiring of each unit with a switch and fuse
as shown in the drawing.
4. Be sure to give the electric grounding (earth) connection. Do
not use solid conductor in the wiring of earth terminal.
5. Tightening torque for the terminal screws.
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.
rminal screws are tightened too hard, screws might
be damaged.
fer to the table below for the tightening torque of the
terminal screws.
6
128
ewdriver for tightening the terminal
Treminal block for remote controller/
Transmission wiring (X2M)
Power supply terminal block (X1M)
G o r u n d t r e m n i a ( l M ) 4
6. Connect round crimp-style terminals provided with insulation
sleeves to the terminal block for power supply. Be sure to follow the
instructions provided below if the specifi ed 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
wire to the single
evenly.
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.
EDMMT712101
Tightening torque
(N·m)
0.79 – 0.97
1.18 – 1.44
1 4 . 4 – 1 9 . 4
Electric wire
Do not connect wires
different from each
other in diameter.
English
3P645058-1
VAM-HVE/HVLT Series