Use Of Buffer Tanks - Panasonic Aquarea B1 Planning And Installation Manual

Planning

5.3.7 Use of Buffer Tanks

Buffer tanks can fulfil three functions in the context of heat pumps:
● Bridging cut-off times by the Energy Supply Company (EVU)
● Hydraulic disconnection of the heat pump circuit of heat transfer system.
● Extension of the heat pump run time for avoiding the frequent switching on/off (cy-
cling) that reduces the system efficiency.
With their inverter technology, the Aquarea heat pumps control the system performance accord-
ing to the heat requirement and can therefore also be operated with buffer tanks efficiently and
save on space. To bridge over the cut-off times by the Energy Supply Company, heat transfer
systems can provide adequate intermediate storage with greater tank capacity such as floor
heating.
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Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
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
superheat.
► 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 protection switch (FI protection switch).
CAUTION
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 (compact systems), p.
systems), p. 16,
mum required contact distance (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 separator. The separator
must have a contact distance of minimum 3.0 mm.
► For the protection fuse of the network connections, bear in mind the power consump-
tion 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 are differentiated by the connection in single-phase and
three-phase devices. Depending on the nominal heating capacity and the power of the internal
E heating elements, the individual models further differ in the type of the mains connections.
In the compact system, the network connection is made directly on the compact device. In the
case of split system, the mains connection is on the indoor unit, that is on hydro-module or
combination hydro-module, where the electricity supply of the outdoor unit is made through an
additional connecting cable between indoor unit and outdoor unit.
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Planning
(→ 4 Technical data (split
50), the mini-
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