Sound pressure level
Model
Heating
AM048CNBFCB/AA
42
AM072CNBFCB/AA
42
Unit: dB(A)
• NC Curve
1) AM048CNBFCB/AA
2) AM072CNBFCB/AA
NOTE
• Specifications may be subject to change without prior notice.
- Sound pressure level is obtained in an anechoic room.
- Sound pressure level is a relative value, depending on the distance and acoustic
environment.
- Sound pressure level may differ depending on operation condition.
- dBA = A weighted sound pressure level
- Reference acoustic pressure 0 dB = 20μPa
9. Sound Data
Hydro Unit HT
9 0
90
8 5
85
8 0
80
7 5
75
7 0
70
6 5
65
60
NC 70
60
Heating
55
NC 60
55
5 0
NC 55
50
4 5
NC 50
45
4 0
NC 45
40
3 5
NC 40
35
3 0
NC 35
30
2 5
NC 30
25
20
NC 25
20
NC 20
15
NC 15
10
5
5
0
0
63
125
250
500
1000
2000
4000
8000
Octave Band Center Frequency(Hz)
Sound
Pr
ess
ur
e
Leve
l (
dB
)
90
90
85
85
80
80
75
75
70
70
65
65
60
NC 70
60
NC 60
55
55
50
Heating
NC 55
50
45
NC 50
45
40
NC 45
40
35
NC 40
35
30
NC 35
30
25
NC 30
25
20
NC 25
20
15
NC 20
Hearing threshold
15
10
NC 15
0
63
125
250
500
1000
2000
4000
8000
Octave Band Center Frequency(Hz)
1
5
0
5
0
Sound Pressure Level (dB)
15
Hearing threshold
10
1.5
m
1m
Microphone
Front
