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
- Model WMC 1
- Table of Contents 3
- The New Compressor Technology 4
- Greater Reliability 5
- Exceptional Control 6
- Unit Control Features 7
- MicroTech II 8
- Changing Setpoints 9
- Trend Logging 9
- Operating Economy 9
- Give You Even More Control 10
- Building Automation Systems 10
- Network Protocol Options 11
- Unit Design Features 12
- Catalog 602-2 13 13
- AHRI Certification 14
- Weighting 15
- Tolerances 15
- Chiller Identification 16
- Sound Data 17
- 18 Catalog 602-2 18
- Dimensions 19
- WMC 145DBS 20
- WMC 150DBS 21
- WMC250DBS 22
- WMC 290DBS 23
- WMC400DBS 24
- Catalog 602-2 25 25
- Drawing Notes 26
- Physical Data and Weights 27
- Physical Data 28
- Relief Valves 29
- Electrical Data 30
- Continued next page 31
- WMC 400D 3/60/460 ONLY 36
- Catalog 602-2 37 37
- 38 Catalog 602-2 38
- Power Factor Correction 39
- VFD Line Harmonics 39
- The IEEE 519-1991 Standard 40
- Application 41
- Considerations 41
- Condenser Water 42
- Temperature 42
- Variable Speed Chilled 42
- Water Pumping 42
- System Water Volume 43
- Pump Control 43
- Retrofit Knockdown 44
- Pressure Drop Curves 45
- Figure 20, 2-Pass Condensers 46
- (3 pass) 47
- Options and Accessories 48
- Electrical 49
- Refrigerant Recovery Units 50
- Refrigerant Monitors 51
- SPECIFICATIONS 52
- OPTIONS and ACCESSORIES 52
- Specifications 53
- 54 Catalog 602-2 54
- Catalog 602-2 55 55
- Octave Band 56
- Catalog 602-2 57 57
- 58 Catalog 602-2 58
- Catalog 602-2 59 59
- • Modbus 60
- • BACnet IP, (Annex J) 60
- Catalog 602-2 61 61
- Catalog 602-2 (2/12) 64
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