Sound Pressure levels
Figure 19: Sound Pressure Measurement Location.
Table 27: Standard Wall-Mounted Sound Pressure Levels.
Figure 20: ARNU053SBL4, ARNU073SBL4, and ARNU093SBL4 Sound Pressure Level Diagrams.
42 | StAndArd
• 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 construction
(acoustic absorption coefficient) of a particular room in which the unit was installed.
High Fan Speed
Due to our policy of continuous product innovation, some specifications may change without notification.
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Sound Pressure Levels dB(A)
Medium Fan Speed
Low Fan Speed