Sound Levels - LG MULTI V ARNU07GTUA4 Engineering Product Data Book

Indoor unit

9. Sound Levels

9.1 Sound Pressure Levels
Overall
DISCHARGE
DUCT
2m
❈ Measuring place : Anechoic chamber
Sound Pressure Levels (dB(A),H-M-L)
Model
20
26-24-23
ARNU07GM1A4
ARNU09GM1A4 27-25-23
ARNU12GM1A4 27-25-23
30-27-23
ARNU15GM1A4
31-28-25
ARNU18GM1A4
ARNU24GM1A4 32-29-26
Sound Pressure Level (20Pa)
ARNU07GM1A4
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)
SUCTION
DUCT
1.5m
2m
External Static Pressure (Pa)
25 59
26-24-23 27-24-23
27-25-23 27-25-23
27-25-23 28-25-23
30-27-23 30-27-24
31-28-25 32-29-27
32-29-26 33-30-28
ARNU09GM1A4
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)
Notes:
1. Sound measured at 1.5m away from the center of the unit
2. Operating condition
- Power source : 220-240V 50Hz / 220V 60Hz
- Cooling : Indoor temperature (27°C DB, 19°C WB),
Outdoor temperature (35°C DB, 24°C WB)
- Heating : Indoor temperature (20°C DB, 15°C WB),
Outdoor temperature (7°C DB, 6°C WB)
3. Reference accoustic pressure 0dB = 20μPa
4. 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.
147
33-28-25
33-29-26
33-30-27
37-33-30
37-34-29
38-35-32
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
NC-20
NC-15
10
500 1 000 2 000 4 000 8 000
Ceiling Concealed Duct(Middle Static)
ARNU12GM1A4
n
High
▲ Mid
l Low
Approximate
Hearing
Threshold
63 125 250 500 1 000 2 000 4 000 8 000
Octave Band Center Frequency (Hz)
_ 27
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15