Electrical Wiring Work; Precautions On Electrical Wiring Work - Daikin ERLQ036BAVJU Manuel D'installation

5. Once operation stops (after 3 to 5 minutes), close the liquid stop
valve and the gas stop valve.
6. The pump down operation is now finished. The remote controller
may display "U4" and the indoor pump may continue operating
for about 30 seconds. This is not a malfunction. Even when the
ON button on the remote controller is pressed, the unit will not
start to operate. To restart operation of the unit turn off the main
power supply switch and turn it on again.
7. Turn off the main power supply switch.
WARNING
Make sure to re-open both stop valves before restarting
operation of the unit.
E
LECTRICAL WIRING WORK
All wiring must be performed by an authorized
electrician.
All components procured on the site and all electric
construction shall comply with the applicable local
laws and regulations.
DANGER
High voltage
To avoid electrical shock, make sure to disconnect the
power supply 1 minute or more before servicing the
electrical parts. Even after 1 minute, always measure the
voltage at the terminals of main circuit capacitors or
electrical parts and, before touching, make sure that those
voltages are 50 V DC or less.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)

Precautions on electrical wiring work

DANGER
Before obtaining access to terminal devices, all supply
circuits must be interrupted.
Use only copper wires.
A main switch or other means for disconnection, having a contact
separation in all poles, must be incorporated in the fixed wiring in
accordance with relevant local laws and national regulations.
Do not turn on the main switch until all the wiring is completed.
Never squeeze bundled cables into a unit.
Fix cables so that cables do not make contact with the pipes
(especially on high pressure side).
Secure the electrical wiring with cable ties as shown in the figure
below so that it does not come in contact with the piping,
particularly on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.
Be sure to install a ground fault circuit interrupter in accordance
with relevant local laws and regulations. Failure to do so may
cause electrical shock.
When installing the ground fault circuit interrupter make sure
that it is compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the ground
fault circuit interrupter.
WARNING
The ground fault circuit interrupter must be a high
speed type breaker of 30 mA (<0.1 seconds).
ERLQ036~054BAVJU
Outdoor unit for air to water heat pump
4PW55905-1
As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
CAUTION
Be sure to install the required fuses or circuit breakers.
Secure the wiring in the order shown below.
1 Secure the ground wire to the stop valve attachment plate so
that it does not slide.
2 Secure the ground wire to the stop valve attachment plate one
more time along with the electric wiring and the inter-unit wiring.
Lay the electrical wiring so that the front cover does not rise up
when doing wiring work and attach the front cover securely.
7
4
8
5
6
1 Power supply and ground wiring
2 Wiring between unit
3 Power supply of bottom plate heater (from indoor unit)
When cables are routed from the unit, a protection sleeve for the
conduits (PG-insertions) can be inserted at the knock-out hole.
(See figure 3)
1 Wire
2 Bush
3 Nut
4 Frame
5 Hose
A Inside
B Outside
When you do not use a wire conduit, be sure to protect the wires
with vinyl tubes to prevent the edge of the knock-out hole from
cutting the wires.
Follow the electric wiring diagram for electrical wiring works.
Form the wires and fix the cover firmly so that the cover may be
fit in properly.
For field wiring use appropriate wire conduits according to local
laws and regulations.
1 Switch box
2 Stop valve mounting
plate
1
3 Ground
4 Cable tie
2
5 Wiring between units
6 Power supply and
ground wiring
7 Bottom plate heater
cable
8 Power supply of
bottom plate heater
(from indoor unit)
3
2
1
Installation manual
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