LG A2UW18GFAC Manual page 153

MULTI
Outdoor Unit
11. Sound levels
11.1 Sound pressure level
1m
A2UW18GFAC
A3UW21GFAC
A3UW24GFA3
A4UW30GFA2
A5UW36GFA2
A5UW48GFA1
A2UW18GFAC
80
75
70
65
60
55
50
45
40
35
30
25
20
Approximate
Hearing
15
Threshold
10
63 125 250 500 1000 2000
Octave Band Center Frequency (Hz)
1.5m
Model
A3UW21GFAC
80
Cooling
75
Heating
70
65
NC-65
60
NC-60
55
NC-55
50
NC-50
45
NC-45
40
NC-40
35
NC-35
30
NC-30
25
NC-25 20
Approximate
Hearing
NC-20 15
Threshold
NC-15
10
63 125
4000 8000
Octave Band Center Frequency (Hz)
Note
1.Data is valid at free field condition.
2.Reference accoustic pressure 0dB = 20μPa.
3.Data is valid at nominal operation condition.
Refer to the Model Specifications for nominal
conditions(Power source and Ambient temperature, etc)
4.Sound levels can be increased in accordance with
installation and operating conditions. (Operating
conditions include some functional condition like Static
pressure mode, air guide use, Room target temperature
setting, etc and these functions are different in
accordance with each model.)
5.Sound level will vary depending on a range of factors such
as the construction(acoustic absorption coefficient) of
particular room in which the equipment in installed.
6.Sound pressure level is measured on the rated condition
in the anechoic rooms by ISO 3745 standard.
Therefore, these values can be increased owing to
ambient conditions during operation.
Sound Pressure Level [dB(A)]
Cooling
48
49
50
50
50
53
Cooling
Heating
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
250 500 1000 2000 4000 8000
Multiple piping type
Heating
51
52
54
54
54
55
A3UW24GFA3
80
75
70
65
60
55
50
45
40
35
30
25
20
Approximate
Hearing
15
Threshold
10
63 125 250 500 1000 2000 4000
Octave Band Center Frequency (Hz)
Cooling
Heating
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
8000
145