Johnson Controls JX Series Engineering Manual page 91

Slim Concealed Duct, Standard and Slim (JU, JUM Type)
: JUHX3662N
MODEL
SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21
CONDITION : Under the unit 4.9 ft.
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
Frequency at center of sound pressure band (Hz)
: JUHX5462N
MODEL
SOUND LEVEL : HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25
CONDITION : Under the unit 4.9 ft.
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
Frequency at center of sound pressure band (Hz)
REMARKS: 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values
shown in this graph because of the conditions of operation, the structure of the building, the back-
ground noise and other factors.
2. The test results were obtained from an anechoic room.
NOTE
To evaluate the noise level, the maximum value of the measured sound pressure level is used. Read the value at
each frequency level (on horizontal axis, center of the sound pressure band) from 63 Hz to 8000 Hz, and select the
corresponding maximum value indicated on the vertical axis.
91
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
: JUHX4862N
MODEL
SOUND LEVEL : HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25
CONDITION : Under the unit 4.9 ft.
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
Frequency at center of sound pressure band (Hz)
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
JOHNSON CONTROLS