Daikin EKHVMYD50ABV1 [29/64] Lectrical wiring work

Daikin EKHVMYD50ABV1 [29/64] Lectrical wiring work
EKHVMRD50+80ABV1 + EKHVMYD50+80ABV1
Daikin Altherma indoor unit
4P404420-1 2015.04
Installation manual
27
Charging water
1 Connect the water supply to a ll valve (eld supply).
2 For EKHVMRD unit, make sure to open the automatic air purge.
3 For EKHVMYD unit, the unit has 2 automatic air purge valves.
Make sure to open both of them for these units.
4 When a tank is used, a 3-way valve needs to be installed (refer
to the manual of the domestic hot water tank for details).
5 Fill with water until the manometer indicates a pressure of
approximately 2.0 bar.
Remove air in the circuit as much as possible using the air purge
valves. Air present in the water circuit might cause
malfunctioning of the heater kit (if installed).
6 For units with optional heater kit: remove air in the heater vessel
using the heater kit air purge valve.
For nal purging of the unit, operation of the pump is needed.
Therefore, the unit needs to be nally installed.
8. ELECTRICAL WIRING WORK
8.1. Precautions on electrical wiring work
NOTE
During lling, it might not be possible to remove all
air in the system. Remaining air will be removed
through the automatic air purge valves during rst
operating hours of the system. Additional lling
with water afterwards might be required.
Pump only operation in order to purge the air of
the system is possible through eld settings.
Refer to eld settings "[E-04] Pump only
operation" on page 41 for further details.
The water pressure indicated on the manometer
will vary depending on the water temperature
(higher pressure at higher water temperature).
However, at all times water pressure shall remain
above 1 bar to avoid air entering the circuit.
The unit might dispose some excessive water
through the pressure relief valve.
Water quality must be according to EU directive
98/83 EC.
WARNING: Electrical installation
All eld wiring and components must be installed by an
installer and must comply with the applicable legislation
NOTE
Electrical wiring work recommendations.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. Running the unit before the piping is ready
will break the compressor.
DANGER: ELECTRICAL SHOCK
See "2. General safety precautions" on page 2.
WARNING
A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the xed wiring in accordance with the
applicable legislation.
Use only copper wires.
All eld wiring must be carried out in accordance with
the wiring diagram supplied with the unit and the
instructions given below.
Never squeeze bundled cables and be sure that it
does not come in contact with the non-insulated
piping and sharp edges. Be sure no external pressure
is applied to the terminal connections.
Power supply wires must be attached securely.
If the power supply has a missing or wrong N-phase,
equipment will break down.
Be sure to establish an earth. Do not earth the unit to
a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
Be sure to install an earth leakage protector in
accordance with the applicable legislation. Failure to
do so may cause electric shock or re.
Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.
When installing the earth leakage protector be sure
that it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary
opening of the earth leakage protector.
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
a capacitor abnormal heating accident due to high-
frequency waves. Therefore, never install a phase
advancing capacitor.
Be sure to install the required fuses or circuit
breakers.

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