Panasonic Aquarea WH-ADC0309J3E5 Planning And Installation Manual page 106

Planning
Step C: Determine the minimum venting opening area (VA
5
Table III: Minimum venting opening area for natural ventilation
Notes:
For H values lower than 0.6 m, the value of H is to be considered as 0.6 m to comply to IEC 60335-2-40:2018 Clause GG2.
For intermediate m
Example: m
106
1. Determine the excess refrigerant charge quantity (m
below).
2. Then determine the minimum ventilation opening area (VA
determined m value, as specified in Table III, for natural ventilation between the
excess
installation room and the adjacent room.
3. The unit can be installed in a specific room only if the following conditions are fulfilled:
> Two permanent openings, one at the bottom, another at the top, are made between
the installation room and the adjacent room for ventilation purposes.
Installation
room (A
> The bottom opening fulfills the following requirements:
● Must comply to the minimum area requirement of VA
● Opening must be located 300 mm from the floor.
● At least 50 % of required opening area must be 200 mm from the floor.
● The bottom of the opening shall not be higher than the point of release when
the unit is installed and must be situated 100 mm above the floor.
● Must be as close as possible to the floor and lower than H.
> The top opening fulfills the following requirements:
● The total size of the top opening must be more than 50 % of VA
● Opening must be located 1500 mm above the floor.
> The height of the openings must more than 20 mm.
> A direct ventilation opening to outside is NOT encouraged for ventilation opening
(because the user might block the opening when it is cold).
> The value of H is considered as 0.6 m to comply to IEC 60335-2-40:2018 Clause
GG2.
m (kg) m
c max
2.27 0.1
2.27 0.3
2.27 0.5
2.27 0.7
2.27 0.9
2.27 1.1
2.27 1.3
2.27 1.5
2.27 1.7
2.27 1.9
values, the value that corresponds to the higher m
excess
= 1.45 kg, the value that corresponds to "m
excess
)
room
Bottom opening
(kg) m = m – m (kg)
excess c max
2.17
1.97
1.77
1.57
1.37
1.17
0.97
0.77
0.57
0.37
value from the table is to be considered.
excess
= 1.6 kg" is to be considered.
excess
Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
) for natural ventilation:
min
), as specified in Table III (see
excess
) corresponding to the
min
Adjacent
room (B )
room
Top opening
> 0.5 VA
min
> VA
min
.
min
.
min
Minimum venting opening area (VA
H = 0.6 m
878
797
716
635
570
538
485
414
326
224
) (cm²)
min