Installer reference guide
25
08 + ERLQ004~008
Daikin Altherma - Low Temperature Split
4P313774-1 – 2012.05
6 Preparation
6.4
Preparing electrical wiring
6.4.1 About preparing electrical wiring
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:
Q
interrupt power supply to the equipment for certain periods of
time;
Q
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 outdoor unit
compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
6.4.3 Overview of electrical connections except external actuators
WARNING
Q
If the power supply has a missing or wrong N-phase,
equipment will break down.
Q
Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
Q
Install the required fuses or circuit breakers.
Q
Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with the piping or
sharp edges, particularly on the high-pressure side
Q
Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
Q
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
Q
All wiring must be performed by an authorized
electrician and must comply with the applicable
legislation.
Q
Make electrical connections to the fixed wiring.
Q
All components procured on the site and all electrical
construction must comply with the applicable
legislation.
WARNING
The backup heater should have a dedicated power supply.
Normal power supply
Preferential kWh rate power supply
Power supply is NOT interrupted
Power supply is interrupted
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 indoor unit.
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.
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 backup heater
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)
1
580
1 50
0
0
2
a
3
1
4
580
1 50
0
0
2
b
3
5
3
a
b
1
4
580
1 50
0
0
580
1 50
0
0
2
