Johnson Controls JA Series, Engineering Manual

Page: 91 / 249

MODEL
:
J
UHX3662
N
SOUND LEVEL :
CONDITION :
SOURCE : 208 - 230 V, Single-phase, 60 Hz
MODEL
:
J
UHX4862
N
SOUND LEVEL :
CONDITION :
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
Frequency at center of sound pressure band (Hz) Frequency at center of sound pressure band (Hz)
MODEL
:
J
UHX5462
N
SOUND LEVEL :
CONDITION :
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
Frequency at center of sound pressure band (Hz)
HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21
Under the unit 4.9 ft.
HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25
Under the unit 4.9 ft.
HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25
Under the unit 4.9 ft.
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002 bar)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002 bar)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002 bar)
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.
TD831149-00̲3WAY.indb 81 2010/01/26 15:11:15
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
91 JOHNSON CONTROLS
Slim Concealed Duct, Standard and Slim (JU, JUM Type)