16
Indoor unit
9. Sound Levels
9.1 Test condition
Note:
1, During actual operation, these values are normally somewhat higher as a result of ambient conditions.
2, Semi-anechoic chamber conversion value, measured at a point which is 4.59ft(1.4m) under the unit.
9.2 Test value
Model
Sound level dB(A)
H
M
L
33
32
21
34
32
22
34
32
22
40
34
27
40
34
27
9.3 Octave Band Level
Octave band center frequency
（
Hz
）
Sou
nd
pre
ssure
lev
el d
B
（
0dB
=0.0
00
2
μ
ba
r
）
Audibility limits of
continuous white
sound
Octave band center frequency
（
Hz
）
Sound pres
sure level
dB
（
0dB=0.0
002
μ
bar
）
Audibility limits of
continuous white
sound
4.59ft
MVD-15Q4/DHN1-A3
MVD-22Q4/DHN1-A3
MVD-28Q4/DHN1-A3
MVD-36Q4/DHN1-A3
MVD-45Q4/DHN1-A3
MVD-15Q4/DHN1-A3
MVD-28Q4/DHN1-A3
MVD-22Q4/DHN1-A3
Service manual
MVD DC Indoor units
16
