LG ARNU423B8A4 - Page 169

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Vertical / Horizontal Air Handler
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Acoustic Data
Sound Pressure Levels
Figure 45: Sound Pressure Measurement Location.
Model
Sound Pressure Levels dB(A)
High Fan Speed Medium Fan Speed Low Fan Speed
NJ Frames
ARNU123NJA4 42 41 39
ARNU183NJA4 42 42 41
ARNU243NJA4 43 42 41
ARNU303NJA4 44 43 42
ARNU363NJA4 45 44 43
NK Frames
ARNU423NKA4 46 44 41
ARNU483NKA4 49 47 41
ARNU543NKA4 50 49 47
Table 129: Vertical / Horizontal Air Handler Unit Sound Pressure Levels.
Figure 46: ARNU123NJA4, ARNU183NJA4, and ARNU243NJA4 Sound Pressure Level Diagrams.
• Measurements are taken 3.3 ft away from the front of the unit.
• Sound pressure levels are measured in dB(A) with a tolerance of ±3.
• Sound pressure levels are tested in an anechoic chamber under ISO Standard
3745.
Operating Conditions:
• Power source: 220V/60 Hz
• Sound level will vary depending on a range of factors including the construc-
tion (acoustic absorption coefficient) of a particular room in which the unit was
installed.
VERTICAL / HORIZONTAL AIR HANDLER
3.3ft
3.3ft
Microphone
ARNU123NJA4 ARNU183NJA4 ARNU243NJA4