LG LC188HHV4 Engineering Manual page 23

Figure 15: Four-Way Ceiling Cassette Outdoor Unit
Sound Pressure Level Measurement Location.
4.9 ft.
D
3.3 ft.
Figure 16: Four-Way Ceiling Cassette Outdoor Unit Sound Pressure Level Diagrams.
LUU180HHV, LUU240HHV
80
75
70
65
60
55
50
45
40
35
30
25
20
Approximate
Hearing
15
Threshold
10
63 125 250 500 1000
Octave Band Center Frequency (Hz)
• Measurements taken with no attenuation and units operating at full load normal
operating condition.
• Sound level will vary depending on a range of factors such as construction (acous-
tic absorption coefficient) of particular area in which the equipment is installed.
• Sound pressure levels are measured in dB(A)±1.
• Tested in anechoic chamber per ISO Standard 3745.
Table 10: Four-Way Ceiling Cassette Outdoor Unit Sound Pressure Levels (dB[A]).
80
Cooling
Heating
75
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
NC-20 Hearing
15
NC-15
10
2000 4000 8000
63
©
Model
LUU180HHV
LUU240HHV
LUU360HHV
LUU420HHV
LUU480HHV
LUU360HHV
Cooling
Heating
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
ACOUSTIC DATA
Outdoor Units
Sound Pressure Levels (dB[A])
Cooling Heating
51
51
52
54
54
LUU420HHV, LUU480HHV
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)
PRODUCT DATA | 23
52
52
54
56
56
Cooling
Heating
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
4000 8000