20
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
STANDARD version
High speed fans (905 rpm)
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
51
63
62
60
61
54
49
64
1500Z
1500Z HPS
53
65
64
62
63
56
51
66
1850Z
1850Z HPS
53
65
64
62
63
56
51
66
2150Z
2150Z HPS
52
65
64
65
64
59
53
67
2500Z
2500Z HPS
53
66
65
66
65
60
54
68
2800Z
2800Z HPS
55
67
66
64
65
58
53
68
3050Z HPS
55
67
66
64
65
58
53
68
3400Z HPS
56
68
67
65
66
59
54
69
3750Z HPS
56
68
67
65
66
59
54
69
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
83
95
94
92
93
86
81
96
1500Z
1500Z HPS
85
97
96
94
95
88
83
98
1850Z
1850Z HPS
85
97
96
94
95
88
83
98
2150Z
2150Z HPS
85
98
97
98
97
92
86
100
2500Z
2500Z HPS
86
99
98
99
98
93
87
101
2800Z
2800Z HPS
88
100
99
97
98
91
86
101
3050Z HPS
88
100
99
97
98
91
86
101
3400Z HPS
89
101
100
98
99
92
87
102
3750Z HPS
89
101
100
98
99
92
87
102
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.
