MULTI/SINGLE
Indoor unit
7. Sound Levels
18
Ceiling concealed duct - Low static pressure
7.2 Sound Power Level
Note
1. Operating condition
• Power source : 220-240V 50 Hz / 220V 60 Hz
• Cooling : Indoor temperature (27°C DB, 19°C WB),
Outdoor temperature (35°C DB, 24°C WB)
• Heating : Indoor temperature (20°C DB, 15°C WB),
Outdoor temperature (7°C DB, 6°C WB)
• External static pressure is according to “Standard mode” value. Refer to the specifications.
2. Data is valid at diffuse field condition.
3. Data is valid at nominal operating condition
4. Sound level can be increased in static pressure mode or used air guide.
5. Sound level will vary depending on a range of factors such as the construction (acoustic absorption coefficient).
6. Reference acoustic intensity 0dB = 10E-6μW/m
2
7. Sound power level is measured on the rated condition in the reverberation rooms by ISO 3741 standard.
Therefore, these values can be increased owing to ambient conditions during operation.
Model
Sound power level [dB(A)]
Cooling
ZBNW09GL5A1 [CL09F N50]
ZBNW12GL5A1 [CL12F N50]
55
ZBNW18GL6A1 [CL18F N60]
56
ZBNW24GL3A1 [CL24F N30]
58
ZBNW09GL5A1 [CL09F N50]
ZBNW12GL5A1 [CL12F N50]
ZBNW18GL6A1 [CL18F N60]
ZBNW24GL3A1 [CL24F N30]
10
20
30
40
50
60
70
80
90
100
110
120
125
250
500
1000
2000
4000
8000
Sound Pow
e
r Lev
el
(0
d
B
=
1
0
E-6μ
W
/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
10
20
30
40
50
60
70
80
90
100
110
120
125
250
500
1000
2000
4000
8000
Sound Pow
e
r Lev
el
(0dB
=
1
0
E-6μ
W
/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
PWL (0dB = 10E-6μ
P
a )
Octave Band Center Frequency (Hz)
63 125 250 500
1000
2000
4000 8000
20
30
40
50
60
70
80
90
100
NR-70
NR-65
NR-60
NR-55
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-80
NR-85
NR-90
