Indoor unit
9. Sound Levels
Model
50
ARNU48GBRA4
38-36-34
ARNU54GBRA4
39-37-35
Sound Pressure Level (50Pa)
ARNU48GBRA4
80
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63
125
250
500
1 000 2 000 4 000 8 000
Octave Band Center Frequency (Hz)
Sound Pressure Level (70Pa)
ARNU48GBRA4
80
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63
125
250
500
1 000 2 000 4 000 8 000
Octave Band Center Frequency (Hz)
26 _
Ceiling Concealed Duct(High Static)
Sound Pressure Levels (dB(A),H-M-L)
External Static Pressure (Pa)
70
100
39-37-35
40-39-37
40-38-36
41-39-38
ARNU54GBRA4
80
n
High
▲ Mid
l Low
70
NC-65
60
NC-60
NC-55
50
NC-50
NC-45
40
NC-40
NC-35
30
NC-30
NC-25
20
Approximate
NC-20
Hearing
Threshold
NC-15
10
63
125
250
Octave Band Center Frequency (Hz)
ARNU54GBRA4
80
n
High
▲ Mid
l Low
70
NC-65
60
NC-60
NC-55
50
NC-50
NC-45
40
NC-40
NC-35
30
NC-30
NC-25
20
Approximate
NC-20
Hearing
Threshold
NC-15
10
63
125
250
Octave Band Center Frequency (Hz)
140
170
41-40-38
42-41-39
-
-
n
High
▲ Mid
l Low
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
500
1 000 2 000 4 000 8 000
n
High
▲ Mid
l Low
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
500
1 000 2 000 4 000 8 000