Daikin ATB03RA, Technical Data Manual

Page: 39 / 49

Databook Modular T - October 2022 - Rev. 00 39
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
Air flow: 600 m
3
/h, ESP: 50 Pa
Point
A
Frequency (Hz) 63 125 250 500 1000 2000 4000 8000
Avg
(dBA)
Sound
power
(dB)
Supply inlet 66 72 55 42 39 36 23 12 57
Supply outlet 65 78 67 62 58 58 49 42 66
Return inlet 65 72 54 42 39 35 23 12 56
Return outlet 65 78 67 62 57 57 49 42 66
Surrounding power 68 69 50 44 37 35 27 16 54
Surrounding pressure (dBA) 47
Air flow: 1000 m
3
/h, ESP: 50 Pa
Point
B
Frequency (Hz) 63 125 250 500 1000 2000 4000 8000
Avg
(dBA)
Sound
power
(dB)
Supply inlet 61 69 64 46 45 41 30 21 57
Supply outlet 62 76 81 67 64 64 57 51 74
Return inlet 61 69 64 45 45 41 30 21 57
Return outlet 62 76 81 67 64 63 57 51 74
Surrounding power 65 67 64 49 44 41 34 24 57
Surrounding pressure (dBA)
50
Air flow: 600 m
3
/h, ESP: 150 Pa
Point C Frequency (Hz) 63 125 250 500 1000 2000 4000 8000
Avg
(dBA)
Sound
power
(dB)
Supply inlet 73 74 62 48 44 40 28 17 59
Supply outlet 72 79 75 67 62 63 55 48 71
Return inlet 73 73 62 47 44 40 28 17 59
Return outlet 72 79 75 67 62 63 54 48 71
Surrounding power 75 70 58 50 42 40 32 21 57
Surrounding pressure (dBA) 50
Air flow: 1000 m
3
/h, ESP: 150 Pa
Point
D
Frequency (Hz) 63 125 250 500 1000 2000 4000 8000
Avg
(dBA)
Sound
power
(dB)
Supply inlet 66 70 68 49 47 43 32 24 60
Supply outlet 68 76 85 70 66 66 59 54 77
Return inlet 66 70 68 49 47 43 32 24 60
Return outlet 67 76 85 69 66 66 59 54 77
Surrounding power 71 67 68 52 46 43 37 27 60
Surrounding pressure (dBA)
53
Allowances on declared data: +/- 3 dB(A)