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
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