2. Product Data
2-2. Sound pressure levels
1.5m
(4-7/8ft)
1m (3-1/4ft)
Sound Pressure Level: 56 dB
10
20
30
40
50
60
70
80
90
63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
Octave band central frequency (Hz)
Octave band sound level (0dB=20μPa)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
Measurement
location
Operation mode: Energy saving operation 1 mode
Outdoor temperature: 80.6°F (27°C)
Outlet water temperature: 120°F (49°C)
Outlet water temperature: 149°F (65°C)
Approximate minimum
audible limit on
continuous noise