Vertiv Liebert MC series, Installer/User Manual

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B.3 Liebert® MC Small Platform Sound Pressure Data
Sound Pressure at Distance = 10 ft. (3.05 m), dB
Octave Band Data A-Weighted, dBA
Frequency
(Hz)
Percent Fan Speed Percent Fan Speed
20% 50% 80% 100% 20% 50% 80% 100%
63 29
1
38 48 50 3
1
11 22 24
125 29 44 51 68 13 27 35 52
250 29 40 51 57 20 32 43 48
500 32 39 51 56 28 36 48 53
1000 27 38 51 55 27 38 51 55
2000 16 32 45 52 17 33 47 53
4000 10
1
25 39 46 11
1
26 40 47
8000 11
1
17 34 41 10
1
16 33 40
Total 37 48 58 69 32 42 54 60
1
These values indicate the upper boundary limit due to background noise levels. Actual field values may be equal to or less than that listed.
Sound pressure level data used to develop this table was determined to be in accordance with AHRI Standard 220 and 270. Source: ASHRAE Fundamentals
2009, 8.8
Table B.4 Sound Pressure Data for MCS028 at 10 ft. (3.05 m), dB
Sound Pressure at Distance = 10 ft. (3.05 m), dB
Octave Band Data A-Weighted, dBA
Frequency
(Hz)
Percent Fan Speed Percent Fan Speed
20% 50% 80% 100% 20% 50% 80% 100%
63 32 41 51 53 6 15 25 27
125 32 47 54 71 16 30 38 55
250 32 43 54 60 23 35 46 51
500 35 42 54 59 31 39 51 56
1000 30 42 54 58 30 42 54 58
2000 19 35 48 55 20 36 50 56
4000 13 28 42 49 14 29 43 50
8000 14 20 37 44 13 19 36 43
Total 40 51 61 72 35 45 57 63
1
These values indicate the upper boundary limit due to background noise levels. Actual field values may be equal to or less than that listed.
Sound pressure level data used to develop this table was determined to be in accordance with AHRI Standard 220 and 270. Source: ASHRAE Fundamentals
2009, 8.8
Table B.5 Sound Pressure Data for MCS056 at 10 ft. (3.05 m), dB
75