Toshiba MCY-MHP0404HT-E Engineering Data Book page 44

5
Outdoor unit
• Night operation (sound reduction) control
MCY-MHP0404HT-E
Sound pressure level (dB(A))
90
80
70
60
50
40
30
Audibility limits of
20
continuous white noise
10
63 125 250 500
Octave band center frequency (Hz)
MCY-MHP0604HT-E
Sound pressure level (dB(A))
90
80
70
60
50
40
30
Audibility limits of
20
continuous white noise
10
63 125 250 500
Octave band center frequency (Hz)
Cooling Heating
47 50
Cooling
Heating
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
Cooling Heating
48 50
Cooling
Heating
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
MCY-MHP0504HT-E
Sound pressure level (dB(A))
90
80
70
60
50
40
30
A udibility limits of
20
continuous white noise
10
63 125 250
Octave band center frequency (Hz)
[Measuring location]
Center 1 m
Microphone
1.5 m
Air discharge
[Conditions]
Cooling
Outdoor temperature: 25 °CDB, 16 °CWB
Indoor air temperature: 27 °CDB, 19 °CWB
Heating
Outdoor temperature: 7 °CDB, 6 °CWB
Indoor air temperature: 20 °CDB
This sound pressure level are measured in an anechoic
chamber in accordance.
43
Cooling Heating
47 50
Cooling
Heating
500 1000 2000 4000 8000
Air intake
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20