LG ATNW18GTLP1 Engineering Product Data Book page 32

Single Indoor Unit Ceiling Cassette 1-Way
2. ATNW24GTLP1
2.7 Sound Levels
2.7.1 Pressure Levels
80
70
60
50
40
30
20
Approximate
Hearing
Threshold
10
63 125 250
Octave Band Center Frequency (Hz)
Cooling ((SH)/H/M/L)
Heating ((SH)/H/M/L)
Note
■ Sound measured at some distance away from the center of the unit.
■ Data is valid at free field condition.
■ Reference accoustic pressure 0dB = 20μPa.
■ Data is valid at nominal operation condition.
Refer to the Model Specifications for nominal conditions(Power source and Ambient temperature, etc)
■ Sound levels can be increased in accordance with installation and operating conditions.
(Static pressure mode, used air guide, Room target temperature setting, etc)
■ Sound pressure level is measured on the rated condition in the anechoic rooms by ISO 3745 standard.
Therefore, these values can be increased owing to ambient conditions during operation.
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
500 1000 2000 4000 8000
Sound level [ dB(A), @ Standard condition ]
- / 46.0 / 43.0 / 40.0
- / 46.0 / 43.0 / 40.0
2-13
Product Data