Daikin WMC Specifications Page 17

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Catalog 602-2 17
Sound Data
The following sound pressure ratings are for
measurements one meter from the unit and in
accordance with ANSI/AHRI Standard 575. The
ratings are for the various part loads shown and at
the center bands. Note that there is a considerable
lowering of sound level as the units unload.
Ratings are “A” weighted measured at one-meter
from the unit. The 25 percent values are with one
compressor running.
Table 3, WMC 145S Sound Pressure (dB), 50/60 Hz
Octave Band
Percent
Load
63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
A-Weighted
100
37.0 50.0 61.0 67.0 74.5 71.5 73.0 75.5
80.5
75
39.5 49.0 60.5 66.0 72.5 69.0 71.0 72.0
78.0
50
37.0 47.5 60.0 64.5 66.5 68.0 69.5 68.0
75.0
25
38.0 50.0 58.0 66.5 68.5 70.0 69.5 70.0
76.5
Table 4, WMC 145D/150D, Sound Pressure (dB), 50/60 Hz
Octave Band
Percent
Load
63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
A-Weighted
100
37.5 49.5 56.0 65.0 72.0 70.0 66.5 64.0
75.5
75
39.5 48.5 55.0 61.0 69.5 64.5 64.0 60.0
72.5
50
35.5 48.0 54.5 58.0 66.0 61.0 58.5 53.5
68.5
25
36.0 48.5 54.5 57.5 65.5 60.5 57.5 52.0
68.0
Table 5, WMC 250D/290D, Sound Pressure (dB), 50/60 Hz
Octave Band
Percent
Load
63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
A-Weighted
100
37.5 51.5 59.5 72.0 75.0 72.5 76.5 75.0
81.5
75
37.0 50.5 62.5 66.5 70.0 69.5 74.0 70.5
78.0
50
37.5 50.0 60.0 65.0 65.5 66.0 71.5 66.0
75.0
25
37.5 49.0 59.0 63.0 65.0 66.0 69.5 64.0
73.5
Table 6, WMC 400D, Sound Pressure (dB), 50/60 Hz
Octave Band
Percent
Load
63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz
A-Weighted
100
46.0 55.5 65.5 70.5 74.5 76.0 80.0 74.5
83.5
75
45.5 55.5 65.5 69.5 73.5 76.5 79.0 72.5
82.5
50
45.0 54.5 64.0 69.0 71.0 74.5 77.5 70.0
81.0
25
44.5 51.5 61.0 64.5 67.5 73.0 73.0 62.0
77.0
One-Third Octave Band
Table 7, WMC 145S, One-Third Octave Band Sound Ratings
Octave Band
Percent
Load
50 Hz 63 Hz 80 Hz 100 Hz 125 Hz 160 Hz 200 Hz 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz
100
33.5 32.0 30.5 38.0 46.5 46.5 49.0 59.0 56.0 60.5 63.0 63.0 69.5
75
34.0 36.0 33.0 39.0 45.0 45.5 49.5 58.5 54.5 58.5 60.0 63.5 71.0
50
31.5 33.5 31.5 37.5 44.5 43.5 48.0 58.5 54.0 53.0 57.0 63.5 58.0
25
32.0 32.5 34.5 37.0 47.0 46.5 49.5 55.5 53.0 55.0 59.0 65.0 59.5
Table 7, continued
Octave Band
Percent
Load
1 kHz 1.25 kHz 1.6 kHz 2 kHz 2.5 kHz 3.15 kHz 4 kHz 5 kHz 6.3 kHz 8 kHz 10 kHz 12.5 kHz
A- Weighted
100
64.0 72.5 66.0 67.5 66.5 66.5 68.0 69.5 72.0 71.0 69.5 67.5
80.5
75
64.0 65.5 64.5 65.5 63.0 64.0 66.0 68.0 69.5 66.5 64.5 62.0
78.0
50
60.5 64.0 63.5 64.5 61.0 61.5 65.5 65.5 65.5 62.5 60.0 58.5
75.0
25
62.5 66.5 65.0 66.5 64.0 63.5 65.0 66.0 67.0 64.5 62.5 60.0
76.5
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