Sound Levels; Nc Curves - Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book

5. SOUND LEVELS

5-1. Sound levels
5. SOUND LEVELS
PMFY-P-VBM-EC
Measurement location
* Measured in anechoic room

5-2. NC curves

PMFY-P20VBM-EC
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
70
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250 500 1000
OCTAVE BAND CENTER FREQUENCIES (Hz)
PMFY-P25,32VBM-EC
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
70
High speed
Middle1 speed
Middle2 speed
Low speed
60
NC60
50
NC50
40
NC40
30
NC30
20
NC20
10
Approximate minimum
audible limit on
continuous noise
0
63 125
2000 4000 8000
OCTAVE BAND CENTER FREQUENCIES (Hz)
INDOOR UNITS
PMFY-P20VBM-EC
PMFY-P25VBM-EC
PMFY-P32VBM-EC
PMFY-P40VBM-EC
PMFY-P40VBM-EC
External static pressure : 0Pa
Power source : 220,230,240V, 50Hz / 220V, 60Hz
High speed
Middle1 speed
Middle2 speed
Low speed
NC60
NC50
NC40
NC30
NC20
250 500 1000 2000 4000 8000
Sound level at anechoic room : Low-Middle2-Middle1-High
Sound level dB (A)
27-30-33-35
32-34-36-37
33-35-37-39
70
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250 500 1000 2000
OCTAVE BAND CENTER FREQUENCIES (Hz)
C7-R Rev.
High speed
Middle1 speed
Middle2 speed
Low speed
NC60
NC50
NC40
NC30
NC20
4000 8000
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