Sound Pressure Level - LG HM031M Engineering Product Data Book

11. Noise Criteria

11.1 Sound pressure level

Overall
1m
Sound Pressure Level [dB(A)]
Model
AHBW036H0 [HM031M]
AHBW056A0 [HM051M]
AHBW076A0 [HM071M]
AHBW096A0 [HM091M]
AHBW126A0 [HM121M]
AHBW036H0 [HM031M]
80
n
Heating
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63 125 250 500 1000 2000 4000
Octave Band Center Frequency (Hz)
Notes:
- Sound measured at 1m away with 1.5m height.
- Data is valid at free field condition.
Microphone
- Data is valid at nominal operation condition.
- Reference acoustic pressure acoustic 0dB = 20μPa.
- Sound level will vary depending on a range of factors such as the
1.5m
- The operating conditions are assumed to be standard.
Cooling Heating
- 47
50 51
52 52
52 52
54 53
AHBW056A0 [HM051M]
80
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
8000 63 125 250
Octave Band Center Frequency (Hz)
construction(acoustic absorption coefficient) of particular room in
which the equipment is installed.
Model
AHBW146A0 [HM141M]
AHBW166A0 [HM161M]
AHBW128A0 [HM123M]
AHBW148A0 [HM143M]
AHBW168A0 [HM163M]
80
▲ Cooling
n
Heating
70
NC-65
60
NC-60
NC-55
50
NC-50
NC-45
40
NC-40
NC-35
30
NC-30
20
NC-25
NC-20
NC-15
10
500 1000 2000 4000 8000
Sound Pressure Level [dB(A)]
Cooling Heating
54 53
54 53
54 53
54 53
54 53
AHBW076A0 [HM071M]
AHBW096A0 [HM091M]
▲ Cooling
n
Heating
Approximate
Hearing
Threshold
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
Air-to-Water Heat Pump
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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