5
EN-115B_f.1420
Noise
Sound pressure level for different distances from the device.
Power level
acoustic
Lw [dB (A)]
Directivity
factor
Q
Distance from the noise source r [m]
1
2
3
4
5
6
8
10
12
15
Sound pressure level Lp [dB (A)]
60
2
52
46
42
40
38
36
34
32
30
28
4
55
49
45
43
41
39
37
35
33
32
8
58
52
48
46
44
42
40
38
36
35
63
2
55
49
45
43
41
39
37
35
33
31
4
58
52
48
46
44
42
40
38
36
35
8
61
55
51
49
47
45
43
41
39
38
64
2
56
50
46
44
42
40
38
36
34
32
4
59
53
49
47
45
43
41
39
37
36
8
62
56
52
50
48
46
44
42
40
39
Q=2
Q=4
Q=8
Q = 2: freestanding heat pump on the outside of the building.
Q = 4: heat pump on the building's wall.
Q = 8: heat pump on the building's wall situated in the corner
Summary of Contents for HPMI2 - 12
Page 47: ......
