21
Air cooled chillers
LX
PROPELLER
F
ANS
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
1
1
B
B
S
OUND
LEVELS
LOW NOISE version
Low speed fans (715 rpm) + compressors phonic insulation
Acoustic pressure levels ref 2 x 10
-5
Pa ± 3 dB (Lp)
Acoustic power levels ref 10
-12
W ± 3 dB (Lw)
LX - LXH
LXC
SOUND
PRESSURE
LEVEL
SPECTRUM (dB)
T
otal pressure
level dB(A)
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
1200Z
1200Z HPS
57
55
57
55
55
49
44
58
1500Z
1500Z HPS
59
57
59
57
57
51
46
60
1850Z
1850Z HPS
59
57
59
57
57
51
46
60
2150Z
2150Z HPS
59
58
59
61
57
54
46
62
2500Z
2500Z HPS
60
59
60
62
58
55
47
63
2800Z
2800Z HPS
62
61
62
64
61
57
50
65
3050Z HPS
62
60
62
62
60
54
49
64
3400Z HPS
63
61
63
63
61
56
50
65
3750Z HPS
63
61
63
63
61
56
50
65
LX - LXH
LXC
SOUND
POWER
LEVEL
SPECTRUM (dB)
T
otal power
level dB(A)
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
1200Z
1200Z HPS
89
87
89
87
87
81
76
90
1500Z
1500Z HPS
91
89
91
89
89
83
78
92
1850Z
1850Z HPS
91
89
91
89
89
83
78
92
2150Z
2150Z HPS
92
91
92
94
90
87
79
95
2500Z
2500Z HPS
93
92
93
95
91
88
80
96
2800Z
2800Z HPS
95
94
95
97
94
90
83
98
3050Z HPS
95
93
95
95
93
87
82
97
3400Z HPS
96
94
96
96
94
89
83
98
3750Z HPS
96
94
96
96
94
89
83
98
Acoustic pressure levels are calculated following ISO 3744 regulation Lp = Lw - 10 log S,
in free field and at 10 meters
from the unit.
We remind that the acoustic pressure level is given as an indication and that only the sound power level is
comparable and certified.
