LG ARUM080LTE5 Engineering Product Data Book page 710

Multi V 5
Heat Recovery
7. Sound Levels
7.1 Sound pressure level
Overall
※ Measuring place : Anechoic chamber
Operation Mode
Changeover : Cooling
Changeover : Heating
Cooling
80
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63 125 250 500
Octave Band Center Frequency (Hz)
12
1.5m
Microphone
Cooling
Heating
Heating
Cooling
80
70
NC-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
1000 2000 4000 8000
Note
• Sound measured at 1.5m away from the center of the unit.
• 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)
• Reference accoustic pressure 0dB=20μPa.
• Sound level will vary depending on a range of factors such
as the construction(acoustic absorption coefficient) of
particular room in which the equipment is installed.
• The changeover sound was measured by switching the
mode of one indoor unit.
It could vary depending on the number of indoor units in
operation, piping length and installation environment.
Sound pressure Levels [dB(A)]
Heating
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
50Hz, 220-240V
30
30
33
38
Changeover : Cooling
80
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63 125 250 500 1000 2000
Octave Band Center Frequency (Hz)
HR Unit
Heating
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
4000 8000