5167821-YTG-K-1118
100 Johnson Controls Ducted Systems
Indoor sound power levels (horizontal ducted discharge)
Unit description/model ZT150
Test configuration Vertical (bottom supply) ducted discharge
External static pressure (IWG) 0.4 1.0 1.6 2.0
Nominal airflow (CFM) 4600 4400 4200 4000
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 86 86 87
125 85 86 88 89
250 76 76 78 78
500 72 73 74 74
1000 66 67 69 69
2000 63 64 66 66
4000 63 64 65 66
8000 56 57 58 59
Unit description/model ZT078
Test configuration Horizontal (side supply) ducted discharge
External static pressure (IWG) 0.4 1.0 1.6 2.0
Nominal airflow (CFM) 2600 2400 2200 2000
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 84 88 91 93
125 76 80 86 90
250 70 73 80 85
500 66 67 74 79
1000 62 65 73 80
2000 60 63 70 75
4000 58 61 69 75
8000 52 54 63 69
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