Daikin EHYKOMB33AA2 [22/136] Preparation
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Daikin EHYKOMB33AA2 [22/136] Preparation

Daikin EHYKOMB33AA2 [22/136] Preparation
6 Preparation
Installer reference guide
22
EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +
EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1A – 2016.02
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
▪ All wiring must be performed by an authorized
electrician and must comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on the site and all electrical
construction must comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
6.5.2 About preferential kWh rate power supply
Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often
authorized to bill clients at benefit rates. E.g. time-of-use rates,
seasonal rates, Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such preferential kWh rate
power supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the preferential kWh
rate power supply delivery systems available.
When the equipment is connected to such preferential kWh rate
power supply, the electricity company is allowed to:
▪ interrupt power supply to the equipment for certain periods of time;
▪ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the gas boiler
can still operate to provide heating, but the outdoor unit compressor
will NOT operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
6.5.3 Overview of electrical connections except
external actuators
Normal power
supply
Preferential kWh rate power supply
Power supply is
NOT interrupted
Power supply is
interrupted
1
5
8
0
1
5
0
0
0
2
a
3
1
4
5
8
0
1
5
0
0
0
2
b
3
During preferential
kWh rate power
supply activation,
power supply is NOT
interrupted. The
outdoor unit is turned
off by the control. The
gas boiler can still
operate.
Remark: The
electricity company
must always allow the
power consumption
of the indoor unit.
5 3
a
b
14
5
8
0
1
5
0
0
0
5
8
0
1
5
0
0
0
2
During preferential
kWh rate power
supply activation,
power supply is
interrupted
immediately or after
some time by the
electricity company.
In this case, the
indoor unit must be
powered by a
separate normal
power supply. The
outdoor unit
CANNOT operate,
but the gas boiler can
operate.
a Normal power supply
b Preferential kWh rate power supply
1 Power supply for outdoor unit
2 Power supply and interconnection cable to indoor unit
3 Power supply for gas boiler
4 Preferential kWh rate power supply (voltage free contact)
5 Normal kWh rate power supply (to power the indoor unit
PCB in the event of power supply interruption of the
preferential kWh rate power supply)
The following applies ONLY for the French market: "Bleu Ciel
tarif"
In France there is a preferential kWh rate called "Bleu Ciel tarif". This
rate divides the days of the year in:
▪ blue days (preferential electricity rate, ideal for heat pump
operation),
▪ white days (ideal for heat pump and hybrid operation),
▪ and red days (high electricity rate, boiler operation preferred).
It is recommended to use the preferential kWh rate power supply
contact (4) to force boiler operation during red days. Note that
sometimes it is required to set the meter on such that, it only closes
the contact on red days. Please refer to the manual of the applicable
meter.
The indoor unit and gas boiler are NOT compatible with other
combinations of contacts (e.g., closed contacts on white/blue days).
Connect the indoor unit and gas boiler as follows: see illustration in
column "Power supply is NOT interrupted" in the table above.
6.5.4 Overview of electrical connections for
external and internal actuators
The following illustration shows the required field wiring.

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