Preparing Electrical Wiring; About Preparing Electrical Wiring; About Preferential Kwh Rate Power Supply; Overview Of Electrical Connections Except External Actuators - Daikin EBLQ05+07CAV3 Installer's Reference Manual

The outdoor unit is installed 5 m below the highest point in the water
circuit. The total water volume in the water circuit is 100 l.
No actions or adjustments are required.
Example 2
The outdoor unit is installed at the highest point in the water circuit.
The total water volume in the water circuit is 350 l. The concentration
of propylene glycol is 35%.
Actions:
▪ Because the total water volume (350 l) is more than the default
water volume (105 l), the pre-pressure must be decreased.
▪ The required pre-pressure is:
Pg = (0.3+(H/10)) bar = (0.3+(0/10)) bar=0.3 bar.
▪ The corresponding maximum water volume at 0.3 bar is 150 l.
(See the graph in the chapter above).
▪ Because 350 l is more than 150 l, the expansion vessel is NOT
appropriate for the installation. Therefore the system requires an
external expansion vessel.
6.4

Preparing electrical wiring

6.4.1

About preparing electrical wiring

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
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
legislation.
WARNING
The backup heater should have a dedicated power supply.
WARNING
ALWAYS use multicore cable for power supply cables.
EBLQ05+07CAV3 + EDLQ05+07CAV3 + EKCB07CAV3 +
EK2CB07CAV3 + EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
comply with the applicable
6.4.2

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, if any.
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.
Option box EK2CB07CAV3 is designed to receive an input signal by
which it switches the outdoor unit into forced-off mode. At that
moment, the compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.

Overview of electrical connections except external actuators

Normal power Preferential kWh rate power supply
supply
Power supply is
NOT interrupted
b
a
0
0 58 0
1 5 0
5
5 1
4
3
2
f e
f e d c
3
During preferential
kWh rate power
supply activation,
power supply is NOT
interrupted. The
outdoor unit is turned
off by the control.
Remark: The
electricity company
must always allow the
power consumption
of the hydro part of
the outdoor unit (and
of the control box, if
part of the system).
a Normal power supply
b Preferential kWh rate power supply
c Hydro part of the outdoor unit
d Refrigerant part of the outdoor unit
e Control box
f Backup heater kit
1 Power supply for outdoor unit
2 Interconnection cable to control box
3 Interconnection cable to backup heater kit
4 Power supply for control box
5 Power supply for backup heater kit
6 Preferential kWh rate power supply (voltage free contact)
6 Preparation
Power supply is
interrupted
a b
0 0
0 0 58 0
0 58 0
0 58 0 1 5 0 1 5 0
1 5 0
5 4 7
1
4
6
3
6
2
f e c
2
d c
During preferential
kWh rate power
supply activation,
power supply is
interrupted
immediately or after
some time by the
electricity company.
In this case, the
hydro part of the
outdoor unit (and the
control box, if part of
the system) must be
powered by a
separate normal
power supply.
Installer reference guide
1
d
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