LG multi V ARNU073TUD4 Engineering Manual page 45

Table 20: Two-Way Ceiling Cassette Indoor Unit Sound Power Levels.
Model
ARNU183TSA4
ARNU243TSA4
Figure 29: ARNU183TSA4 and ARNU243TSA4 Sound Power Level Diagrams.
ARNU183TSA4
100
90
80
70
60
50
40
30
20
10
125 250 500 1000 2000
Octave Band Center Frequency (Hz)
Sound Levels dB(A)
High Fan Speed
44.0
48.0
100
High
Middle
Low
90
NR-90
80
NR-85
NR-80
70
NR-75
NR-70
60
NR-65
NR-60
50
NR-55
NR-50
40
NR-45
NR-40
30
NR-35
NR-30
20
NR-25
NR-20
10
4000 8000
125
©
TWO-WAY CASSETTE
• Data is valid under diffuse field conditions.
• Data is valid under nominal operating conditions.
• Sound power level is measured using rated conditions and tested
in a reverberation chamber under ISO Standard 3741.
• Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
•
ARNU243TSA4
High
Middle
Low
NR-90
NR-85
NR-80
NR-75
NR-70
NR-65
NR-60
NR-55
NR-50
NR-45
NR-40
NR-35
NR-30
NR-25
NR-20
250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
Acoustic Data
Sound Power Levels
2
T WO-WAY | 45