25
Water chillers
LD
PROPELLER
CONDENSER
A I R C O N D I T I O N I N G - R E F R I G E R A T I O N - A I R H A N D L I N G - H E A T E X C H A N G E -
N
N
A
A
0
0
4
4
.
.
5
5
3
3
0
0
A
A
S
OUND
LEVELS
The AQUACIAT LD(C / H) and ILD (H) range is strictly
designed to combine the "noiseless" assembly techniques for
attenuation of vibrations and sound sources.
■
SCROLL compressor(s) located outside the air flow ➀
.
■
Anti-vibration mounting of several compressors on a structure
isolated from the frame ➁.
■
Pipework independent from the unit structure.
■
Low speed fans (500 rpm) LOW NOISE ➂
.
■
Antivibratil mounts supplied as standard à ➃
.
■
Acoustic pressure levels ref 2 x 10
-5
Pa
±
3 dB
Measurement conditions :
■
Compressor(s) + fan(s) at low speed (500 rpm) LOW NOISE
■
Free field
■
10 m distance from the unit, 1.50 m from the ground
■
Directivity 2
SCROL
L
2
1
3
4
500 rpm
AQUACIAT
PRESSURE LEVEL SPECTRUM (dB)
T
otal
level
dB(A)
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
100
63
54
47
47
43
40
34
48
150
60
57
48
46
46
40
40
50
200
66
57
50
50
46
43
37
51
250
60
53
51
49
45
40
39
50
300
61
55
53
49
46
41
39
51
350 - 400 - 450 - 500
67
60
55
52
48
43
37
54
600 - 750
62
61
57
55
50
46
40
56
753
-
54.5
54.5
56.1
52.5
48.7
44.6
57.5
900 - 1000
-
55.7
55.7
57.3
53.8
50
45.9
58.8
AQUACIAT
POWER LEVEL SPECTRUM (dB)
Total
level
dB(A)
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
100
91
82
75
75
71
68
62
76
150
88
85
76
74
74
68
68
78
200
94
85
78
78
74
71
65
79
250
88
81
79
77
73
68
67
78
300
89
83
81
77
74
69
67
79
350 - 400 - 450 - 500
96
89
84
81
77
72
66
83
600 - 750
91
90
86
84
79
75
69
85
753
-
83.5
83.4
85.1
81.5
77.7
73.6
86.5
900 - 1000
-
84.7
84.7
86.3
82.8
79
74.9
87.8
NOTE
:
we remind that the acoustic pressure level is given as an indication and that only the sound power level is comparable
and certified.
Following ISO 3744 Norm Lp = Lw - 10 log S
■
Acoustic power levels ref 2 x 10
-12
W
±
3 dB
Measurement conditions :
■
Compressor(s) + fan(s) at low speed (500 rpm) LOW NOISE
