5167821-YTG-K-1118
Johnson Controls Ducted Systems 101
Unit description/model ZT090
Test configuration Horizontal (side supply) ducted discharge
External static pressure (IWG) 0.4 1.0 1.6 2.0
Nominal airflow (CFM) 3000 2800 2600 2400
Octave band center frequency
(Hz)
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
63 84 86 89 90
125 80 82 84 86
250 73 75 77 79
500 67 68 69 71
1000 64 66 68 70
2000 62 64 66 68
4000 60 63 65 67
8000 53 56 58 60
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
Unit description/model ZT102
Test configuration Horizontal (side 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
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
Full stage cooling operation
(dB)
1
63 87 89 90 91
125 81 83 85 86
250 75 76 79 81
500 70 70 73 75
1000 68 69 72 74
2000 66 67 70 72
4000 64 65 68 71
8000 58 59 63 65
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
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