Sound Emission - Daikin ATB03RA Technical Data Manual

6.3. Sound emission

Surrounding power level: The airborne is the sound power emitted by the unit. The surrounding power level
is the logarithmic sum of the two airborne values (supply and return).
Surrounding pressure level: It is calculated in accordance with EN3744. The evaluation is done at 1 meter
from the source and with a directivity factor equal to 4, in non-reverberant field.
Sound Level Size 03
3
Air flow: 600 m /h, ESP: 50 Pa
Point
Frequency (Hz)
A
Supply inlet
Supply outlet
Sound
power Return inlet
(dB)
Return outlet
Surrounding power
3
Air flow: 1000 m /h, ESP: 50 Pa
Point
Frequency (Hz)
B
Supply inlet
Supply outlet
Sound
power Return inlet
(dB)
Return outlet
Surrounding power
3
Air flow: 600 m /h, ESP: 150 Pa
Point C Frequency (Hz)
Supply inlet
Supply outlet
Sound
power Return inlet
(dB)
Return outlet
Surrounding power
3
Air flow: 1000 m /h, ESP: 150 Pa
Point
Frequency (Hz)
D
Supply inlet
Supply outlet
Sound
power Return inlet
(dB)
Return outlet
Surrounding power
Allowances on declared data: +/- 3 dB(A)
Databook Modular T - October 2022 - Rev. 00
63 125 250
66 72 55
65 78 67
65 72 54
65 78 67
68 69 50
Surrounding pressure (dBA)
63 125 250
61 69 64
62 76 81
61 69 64
62 76 81
65 67 64
Surrounding pressure (dBA)
63 125 250
73 74 62
72 79 75
73 73 62
72 79 75
75 70 58
Surrounding pressure (dBA)
63 125 250
66 70 68
68 76 85
66 70 68
67 76 85
71 67 68
Surrounding pressure (dBA)
500 1000 2000
42 39 36
62 58 58
42 39 35
62 57 57
44 37 35
500 1000 2000
46 45 41
67 64 64
45 45 41
67 64 63
49 44 41
500 1000 2000
48 44 40
67 62 63
47 44 40
67 62 63
50 42 40
500 1000 2000
49 47 43
70 66 66
49 47 43
69 66 66
52 46 43
Avg
4000 8000
(dBA)
23 12 57
49 42 66
23 12 56
49 42 66
27 16 54
47
Avg
4000 8000
(dBA)
30 21 57
57 51 74
30 21 57
57 51 74
34 24 57
50
Avg
4000 8000
(dBA)
28 17 59
55 48 71
28 17 59
54 48 71
32 21 57
50
Avg
4000 8000
(dBA)
32 24 60
59 54 77
32 24 60
59 54 77
37 27 60
53
39