Noise Criterion Curves - Midea MCA3U-18HRFNX-QRD0W Service Manual

8. Noise Criterion Curves

8.1 Indoor Unit
Notes:
-Sound measured at 1.4m away from the noisiest location of the unit.
-Data is valid at free field condition
-Data is valid at nominal operation condition
-Reference acoustic pressure OdB = 20µPa
-Sound level will vary depending on a range of factors such as the construction -(acoustic absorption coefficient) of particular room
in which the equipment is installed.
-The operating conditions are assumed to be standard.
Model
MCA3U-18HRFNX-QRD0W
match with MOB30-18HFN8-
QRD0W
MCA3U-18HRFNX-QRD0W
match with MOB30-18HFN1-
QRD0W
Sound Power dB(A)
56
57
 IDU-Compact Cassette 18
Noise level dB(A)
H M
42.5 39
42.5 39

L
35.5
35.5