Daikin RZQ24MVJU Installation Manual page 12

• The outdoor unit has an inverter which generates noise and charges
the outer casing with the leakage current. The outdoor unit should be
grounded so that the effect of the generated noise on other equip-
ment can be reduced, and that the outer casing can be discharged.
• As this unit is equipped with an inverter, installing a phase advancing
capacitor will not only reduce the power factor improvement factor,
but may also cause the capacitor to overheat due to high-frequency
waves. Therefore, never install a phase advancing capacitor.
• Never push excessive electric wires into the units.
• Protect electric wires with conduit tubes or vinyl tubes so that they
will not be damaged by edges of knock holes.
• Fix electric wires with clamps as accessories so that they will not
come to contact with pipes and stop valves.
(Refer to "7-3 Power supply wiring connection procedure".)
7-1 Connection example of whole system wiring
Earth leakage
circuit breaker
Branch switch
Overcurrent
breaker (fuse)
208-230V
Ground
Power
208-230V
Indoor
unit
Ground
7-2 Routing power supply wiring and transmission
wiring
Let the power supply wiring with a conduit pass through one of the
knockout holes on the front or side cover, and let the transmission wiring
with a conduit pass through another knockout hole.
• For protection from uninsulated live parts, thread the transmission
wiring through the included insulating tube and secure it with the
included clamp.
Insulating tube Clamp
(accessory) (accessory)
〈 〈 〈 〈 Precautions when knocking out knock holes〉 〉 〉 〉
• To punch the knockout hole, hit it with a hammer.
• After removing the knockout, it is recommended that the edges
should be painted to prevent rusting.
CAUTION
• Use conduit for both the power supply wiring and transmission wiring.
• Outside the unit, make sure to keep the wirings 5 inch away.
Otherwise, the outdoor unit may be affected by electrical noise
(external noise), and malfunction or fail.
• Be sure to connect the power supply wiring to the terminal block and
secure it as described in "7-3 Power supply wiring connection procedure".
• Fix the wiring between the units in accordance with
"7-4 Transmission wiring connection procedure".
• Secure the wirings with the clamps (accessory) so that do not touch
the piping.
• Make sure the wirings will not be pinched by the front panel, and
close the panel firmly.
• Route the conduit along the unit by using a elbow socket and so on
to prevent it from being stepped on.
12
Outdoor unit
Power
16V
16V
Remote
controller
Transmission
wiring
(3in.)
7-3 Power supply wiring connection procedure
WARNING
• Never connect power supply wiring to the terminal block for remote
controller wiring as this could damage the entire system.
Install an earth leakage circuit breaker.
• It is obliged to install an earth leakage circuit breaker to prevent elec-
tric shock and fire accident.
Phase and
Model Voltage
frequency
RZQ24MVJU
RZQ30MVJU
~ 60Hz 208-230V
RZQ36MVJU
RZQ42MVJU
Electric parts
mounting plate
A1P
Stop valve
mounting plate
Power supply wiring
(including ground wire)
or
Transmission wiring
Control PC
board (A1P)
Ground wiring
(yellow/green)
Power
supply wiring
Clamp (accessory)
This clamp is unnecessary when not
∗
using shield wire.
Rated current Min. Circuit
of fuse Amps.
30A 27A
Power supply wiring
(including ground wire)
or
Transmission wiring
Lock nut
Conduit
Cover
Transmission wiring
between units
∗
When using a
shield wire
Clamp (accessory)
Control
terminal Pass the wiring
block
through the clips.
(X1M)
Power
terminal
Insulating tube (accessory)
block
(X1M)
L1 L2
Terminal block