5167821-YTG-K-1118
Johnson Controls Ducted Systems
99
Unit description/model
ZT102
Test configuration
Vertical (bottom supply) ducted discharge
External static pressure (IWG)
0.4
1.0
1.6
2.0
Nominal airflow (CFM)
3400
3200
3000
2800
Octave band center frequency
(Hz)
Full stage cooling operation
(dB)
1
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric/free field. The dBA values
provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan manufacture has no way
of knowing the details of each system. This constitutes an exception to any specification or guarantee requiring a dBA value of sound data
in any other form than sound power level ratings
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
63
87
89
90
90
125
87
88
90
91
250
80
81
82
84
500
75
75
78
79
1000
70
71
73
75
2000
68
69
71
73
4000
68
68
71
72
8000
61
62
64
66
Unit description/model
ZT120
Test configuration
Vertical (bottom supply) ducted discharge
External static pressure (IWG)
0.4
1.0
1.6
2.0
Nominal airflow (CFM)
4000
3800
3600
3400
Octave band center frequency
(Hz)
Full stage cooling operation
(dB)
1
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric/free field. The dBA values
provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan manufacture has no way
of knowing the details of each system. This constitutes an exception to any specification or guarantee requiring a dBA value of sound data
in any other form than sound power level ratings
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
63
92
92
91
91
125
91
91
92
93
250
85
85
87
88
500
79
80
81
83
1000
75
76
78
79
2000
73
74
75
77
4000
72
73
75
76
8000
65
66
68
69
