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SECTION 4 - TECHNICAL DATA
NOISE EMISSON
LOCATION*
OVERALL
1
80/ 83
2
77 / 83
3
75 / 83
4
78 / 84
5
64 / 80
* Position of Measuring instrument
1
B Side
(Steam Inlet Side)
Height: 59 inch, Horizon: 39 inch (from chiller surface)
NOTE: These data are reference values, as the chiller unit was not covered with the thermal insulation materials and the water pipes (for
chilled water, cooling water, and steam) were temporary during the measurement.
FIGURE 35 - SAMPLE SOUND TESTING FOR YHAU-CW CHILLER
92
31.5 Hz
63 Hz
125 Hz
37 / 76
48 / 74
57 / 73
40 / 79
49 / 75
56 / 72
41 / 80
49 / 75
59 / 75
40 / 79
50 / 76
61 / 77
37 / 76
44 / 70
60 / 76
OCTAVE BAND
250 Hz
500 Hz
1 kHz
64 / 73
69 / 72
73 / 73
62 / 71
68 / 71
70 / 70
62 / 71
65 / 68
69 / 69
64 / 73
71 / 74
71 / 71
56 / 65
54 / 57
57 / 57
4 Evaporator
2 Generator Side
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
2 kHz
4 kHz
8 kHz
75 / 74
75 / 74
70 / 71
71 / 70
70 / 69
70 / 71
71 / 70
67 / 66
58 /59
74 / 73
71 / 70
65 / 66
56 / 55
50 / 49
36 / 37
3
A Side
5
Background
Noise
LD19976
JOHNSON CONTROLS
16 kHz
56 / 63
53 / 60
44 / 51
50 / 57
26 / 33
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Troubleshooting
