8
Sound Levels
8 -- 1
Liebert HPC---S 006---022---PD---273571---01.03.2012
Sound Levels
Sound Pressure and Power Levels
SPL
The values of Sound Pressure Level SPL for every octave band frequency, measured with unit on full load
operation, at nominal working conditions (ambient air temperature 35
_
C, evaporator water inlet/outlet
temperature 12/7
_
C), free field conditions and 1 m from unit in according to ISO 3744 average method
are indicated in the following tables.
PWL
The values of Power Level PWL for every octave band frequency, with unit on full load operation, at nom-
inal working conditions (ambient air temperature 35
_
C, evaporator water inlet/outlet temperature
12/7
_
C), calculated in according to ISO 3744 procedure method are indicated in the following tables.
Tab. 8a --- SPL CB0 --- FB0 900AC
Models
Octave band frequency [Hz]
Total
[dB(A)]
“SPL” Sound Pressure Levels [dB]
63
125
250
500
1000
2000
4000
8000
CB0006
FB0006
70
73
73
73
71
65
59
56
75.0
CB0007
FB0007
70
73
73
73
71
65
59
56
75.0
CB0009
FB0009
71
74
74
74
72
66
60
57
76.0
CB0011
FB0011
74
74
74
74
72
67
60
57
76.0
CB0014
FB0014
75
75
74
74
72
69
61
58
76.5
CB0015
FB0015
75
75
74
74
72
69
61
58
76.5
CB0018
FB0018
75
75
74
74
73
69
62
59
77.0
CB0019
FB0019
76
75
75
74
74
69
63
59
77.5
CB0022
FB0022
77
75
76
75
74
70
63
60
78.0
Tab. 8b --- PWL CB0 --- FB0 900AC
Models
Octave band frequency [Hz]
Total
[dB(A)]
“PWL” Sound Power Levels [dB]
63
125
250
500
1000
2000
4000
8000
CB0006
FB0006
87
90
90
90
88
82
76
73
92.0
CB0007
FB0007
87
90
90
90
88
82
76
73
92.0
CB0009
FB0009
89
92
92
92
90
84
78
75
94.0
CB0011
FB0011
92
92
92
92
90
85
78
75
94.0
CB0014
FB0014
93
93
92
92
90
87
79
76
94.5
CB0015
FB0015
93
93
92
92
90
87
79
76
94.5
CB0018
FB0018
94
94
93
93
92
88
81
78
96.0
CB0019
FB0019
95
94
94
93
93
88
82
78
96.5
CB0022
FB0022
96
94
95
94
93
89
82
79
97.0
Note:
Sound power levels tolerance for each octave band: ---0/+2 dB
Summary of Contents for HPC-S 006
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