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Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Planning
5
5.4 Electricals
5.4.1 Electrical connection to a power source
WARNING
Danger to life from electric shock!
The devices are operated with 230 V or 400 V alternating current. Improper installation can present
a danger to life from electric shock as well as a danger of fire occurring due to overheating.
► Electrical installation work must be undertaken by a trained electrician.
►
Adherence to national and local standards and regulations is to be observed when
carrying out any installation work.
► The heat pumps must be duly earthed. Earthing is not to be undertaken via gas or water
pipes, lightning conductors or earthing for a telephone system.
►
Adherence is to be paid to the respective national electrical wiring regulations and safety
arrangements with regard to residual current. Panasonic recommends using a residual
current circuit breaker (RCCB).
ATTENTION
Danger of damage due to unprofessional installation
► When making electrical wiring connections, respect the relevant requirements for
cable type, cable cross-section and recommended fuse (→
4.6.3.3 Technical Data (mono-bloc systems), p. 55
minimum required contact clearance (5 mm) and the maximum permissible cable length
(if indicated) as well as the connecting conditions for the individual devices mentioned
below.
►
The connection to the electricity supply must be led via a disconnetor. The disconnetor
must have a contact clearance of minimum 3.0 mm.
►
For the protection fuse of the mains power supply connections, bear in mind the power
consumption and the cable cross-sections used. An unsuitable fuse can cause premature
triggering or damage the cable. Respect the relevant rules, especially IEC 60364-4-43
and IEC 60364-5-52 or their national implementation.
In general, the Aquarea heat pumps can either be single-phase or three-phase devices. Depending
on the nominal heating capacity and the power of the internal electric backup heater, the individual
models further differ in the type of the mains connections.
In the case of a mono-bloc system, the mains connection is made directly on the mono-bloc unit. In
the case of a bi-bloc system, the mains connection is on the indoor unit (hydrokit or All in One unit),
while the power supply to the outdoor unit is provided by an additional connecting cable between
indoor unit and outdoor unit.
An overview of the said differences is shown in the following tables. The connection conditions for
the individual devices are explained in paragraphs following each table.
