Sound Levels - LG MULTI V ARNU07GTUA4 Engineering Product Data Book

Indoor unit

9. Sound Levels

Overall
DISCHARGE
DUCT
2m
❈ Measuring place : Anechoic chamber
Model
50
ARNU28GBGA4 29-25-23
ARNU36GBGA4 33-31-28
ARNU42GBGA4 36-33-30
Sound Pressure Level (50Pa)
ARNU28GBGA4
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
Sound Pressure Levels (dB(A),H-M-L)
External Static Pressure (Pa)
80 100
33-29-26 34-33-30
36-34-31 37-35-32
39-36-33 40-38-35
ARNU36GBGA4
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.
120 140 160
35-34-31 36-35-32 37-36-33
39-37-34 40-38-35 41-39-36
42-39-36 43-40-37 44-41-38
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
Ceiling Concealed Duct(High Static)
ARNU42GBGA4
80
n
High
▲ Mid
l Low
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)
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
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