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all-Mounted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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StandaRd Wall-Mounted
Acoustic data
Sound Power levels
•
Data is valid under diffuse field conditions.
•
Data is valid under nominal operating conditions.
•
Sound power level is measured using rated conditions, and tested
in a reverberation room per ISO 3741 standards.
•
Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
• Reference acoustic intensity: 0dB = 10E-6μW/m
2
Table 28: Standard Wall-Mounted Indoor Unit Sound Power Levels.
Model
Sound Power Levels dB(A)
High Fan Speed
SB Frames
ARNU053SBL4
54.0
ARNU073SBL4
54.0
ARNU093SBL4
55.0
ARNU123SBL4
55.0
ARNU153SBL4
58.0
SC Frames
ARNU183SCL4
57.0
ARNU243SCL4
62.0
Figure 23: ARNU053SBL4, ARNU073SBL4, and ARNU093SBL4 Sound Power Level Diagrams.
ARNU053SBL4
ARNU073SBL4
ARNU093SBL4