105
Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Planning
5
Table I: Maximum refrigerant charge allowed in a room
A
room
(m²)
Maximum refrigerant
charge (m
max
) (kg)
A
room
(m²)
Maximum refrigerant
charge (m
max
) (kg)
A
room
(m²)
Maximum refrigerant
charge (m
max
) (kg)
H = 0.6 m
H = 0.6 m
H = 0.6 m
1
0.138
16
1.371
31
1.909
2
0.276
17
1.413
32
1.939
3
0.414
18
1.454
33
1.969
4
0.553
19
1.494
34
1.999
5
0.691
20
1.533
35
2.028
6
0.829
21
1.571
36
2.057
7
0.907
22
1.608
37
2.085
8
0.970
23
1.644
38
2.113
9
1.028
24
1.679
39
2.141
10
1.084
25
1.714
40
2.168
11
1.137
26
1.748
41
2.195
12
1.187
27
1.781
42
2.221
13
1.236
28
1.814
43
2.248
14
1.283
29
1.846
44
2.274
15
1.328
30
1.877
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 A
room
values, the value that corresponds to the
lower
A
room
value from the table is to be considered.
Example: For A
room
= 10.5 m², the value that corresponds to “A
room
= 10 m²” is to be considered.
Step B: Determine compliance of total floor area (A
room
+ B
room
) to minimum required total floor area
(A
min total
):
1.
Calculate the floor area (B
room
) of the room adjacent to the installation room.
2.
Determine the minimum required total floor area (A
min total
) based on the total refrigerant
charge (m
c
) as specified in Table II (see below).
3.
If the total floor area of both rooms (A
room
+ B
room
) exceeds the minimum required total floor
area (A
min total
), proceed to Step C, to determine how large the ventilation openings between
the two rooms must be. If not, the unit must not be installed.
Table II: Minimum allowed total floor area
m
c
(kg)
Minimum floor area
(A
min total
) (m²)
m
c
(kg)
Minimum floor area
(A
min total
) (m²)
m
c
(kg)
Minimum floor area
(A
min total
) (m²)
H = 0.6 m
H = 0.6 m
H = 0.6 m
1.84
28.81
2.00
34.04
2.16
39.71
1.86
29.44
2.02
34.73
2.18
40.45
1.88
30.08
2.04
35.42
2.20
41.19
1.90
30.72
2.06
36.12
2.22
41.94
1.92
31.37
2.08
36.82
2.24
42.70
1.94
32.03
2.10
37.53
2.26
43.47
1.96
32.70
2.12
38.25
2.27
43.86
1.98
33.37
2.14
38.98
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
c
values, the value that corresponds to the
higher
m
c
value from the table is to be considered.
Example: If m
c
= 1.85 kg, the value that corresponds to “m
c
= 1.86 kg” is to be considered.
Systems with total refrigerant charge lower than 1.84 kg are not subjected to any floor area requirements.
Charges above 2.27 kg are not allowed in the unit.
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