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22 | PRODUCT DATA
Single-Zone LGRED° Four-Way Ceiling-Cassette System Engineering Manual
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ACOUSTIC DATA
Indoor Units
Table 9: Four-Way Ceiling Cassette Indoor Unit Sound Power Levels
(dB[A]).
Model Sound Power Levels (dB[A])
LCN188HV4 -
LCN249HV 57
LCN369HV 61
LCN429HV 62
LCN489HV 62
• 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 power level will vary depending on a range of factors such
as construction (acoustic absorption coefficient) of particular area
in which the equipment is installed
• 5HIHUHQFHDFRXVWLFLQWHQVLW\G% (ȝ:P
2
Figure 14: Four-Way Ceiling Cassette Indoor Unit Sound Power Level Diagrams.
LCN249HV
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
125 250 500 1000 2000 4000 8000
Sound Power Level (0dB = 10E-6ȝW/m
2
)
Octave Band Center Frequency (Hz)
NR-70
NR-65
NR-60
NR-55
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
NR-95
NR-100
NR-105
NR-110
LCN369HV
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
125 250 500 1000 2000 4000 8000
S
oun
d
P
ower
L
eve
l
(0dB
=
10E
-
6
ȝW/m
2
)
Octave Band Center Frequency (Hz)
NR-70
NR-65
NR-60
NR-55
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
NR-95
NR-100
NR-105
NR-110
LCN429HV, LCN489HV
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
125 250 500 1000 2000 4000 8000
Sound Power Level (0dB = 10E-6ȝW/m
2
)
Octave Band Center Frequency (Hz)
NR-70
NR-65
NR-60
NR-55
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
NR-95
NR-100
NR-105
NR-110
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