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Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Planning
5
5.2.2.4 Requirements of the room for installation of the indoor unit
When designing the installation room, consider all devices and components of the heat pump
system, which are not installed outside the building:
● Hydrokit or All in One unit (only for bi-bloc systems).
● Pipes, cables and wall bushings should be arranged in a useful manner and using the
shortest path (electrical cables, refrigerant and heating water pipes).
● Tank (domestic hot water tank as well as possibly buer tank)
Further, see that the installation room is dry and frost-free and that the installation location is easily
accessible for maintenance work.
Required volume of the installation room
In bi-bloc systems, the refrigerant is partly in the building, which must be taken into consideration
with respect to the minimum required volume. If no special machine room is available according to
EN 378 - Part 1, the minimum required volume of the installation room (V
min
) according to EN 378 –
Part 1) is calculated for heat pumps as follows:
V
min
=
G
c
Where:
G = Refrigerant charge in kg
c = practical limit in kg / m³
(for R32 is c = 0.061 kg/m³, for R410A is c = 0.44 kg/m³; for R407C is c = 0.31 kg/m³)
ATTENTION
Danger of the devices being damaged by incorrect refrigerant
The devices must only be operated with the refrigerants described in this Manual or the respective
operating instructions. The use of other refrigerants or multi-component refrigerants can lead to the
devices being damaged and to safety risks. Panasonic will not accept any responsibility or liability
whatsoever if incorrect refrigerants are used.
► Only use R32 refrigerant for Aquarea High Performance and T-CAP series models of the
J Generation, only use R410A refrigerant for the Aquarea High Performance and T-CAP
series models of the H Generation and only use R407C refrigerant for the Aquarea HT
series models of the F and G Generation.
► Do not mix the prescribed refrigerant with refrigerants of another type or replace it with a
refrigerant of another type.
!
IMPORTANT
The refrigerant and the refrigerant charge quantity dier for the individual models and are
also dependent on the additional refrigerant charge, which is added in the eld due to longer
pipe runs exceeding the pre-lled pipe length. Details to be taken from the technical data
(→ 4.6.2.3 Technical Data (bi-bloc systems), p. 40, → 4.6.3.3 Technical Data (mono-bloc
systems), p. 55).
29.11.2021, cH
Specific requirements for R32 added here, OK?
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