Engineering Manual

PRODUCT DATA | 17
Product Data
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INDOOR UNIT ACOUSTIC DATA
Figure 5: Extended Piping Wall Mounted
Indoor Unit Sound Level Measurement
Location.
2.6 feet
(0.8 m)
3.3 feet (1 m)
Microphone
Model
Cooling Heating
HMLHML
LSN243HLV3 49 44 40 49 44 40
LSN303HLV3 51 47 43 51 47 43
LSN363HLV3 51 47 43 51 47 43
Table 6: Extended Piping Wall Mounted Indoor Unit Sound Pressure Data.
• Measurements are taken 3.3 feet (1 m) away from the front of the unit.
• Sound pressure levels are measured in dB(A) with a tolerance of ±1.
• Reference acoustic pressure 0dB=20μPa.
• Data is valid at nominal operation conditions. Operating conditions are assumed to be standard.
• Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745, and may
be different according to the test condition or equipment.
• Sound level will vary depending on a range of factors including the construction (acoustic ab-
sorption coefficient) of a particular room in which the unit was installed.
LSN243HLV3
Cooling Heating
Octave Band Sound Pressure Level
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Octave Band Center Frequency (Hz
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Ŷ High
Ɣ Low
Ÿ Middle
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Sound Pressure Level
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Octave Band Center Frequency (Hz
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Ŷ High
Ɣ Low
Ÿ Middle
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Figure 6: Sound Pressure Levels for LSN243HLV3 Indoor Units.
Indoor Unit Sound Pressure Measurement / Sound Pressure Levels
LSN243HLV3 Sound Pressure Levels
Extended Piping Wall Mounted Systems