Friedrich MULTI ZONE MR24DY3JMA - 8. Sound levels

8. Sound levels
10 _ Ceiling cassette 4-way
Part 2 Product data_Indoor units
MULTI ZONEMULTI ZONE
Overall
Octave Band Sound Pressure Level (0dB = 20μPa) Octave Band Sound Pressure Level (0dB = 20μPa )
Octave Band Center Frequency (Hz) Octave Band Center Frequency (Hz)
63 125 250 500 1000 2000 4000 8000
63 125 250 500 1000 2000 4000 8000
10
20
30
40
50
60
70
80
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
10
20
30
40
50
60
70
80
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
MC12Y3JM MC18Y3JM
Sound pressure level
Model
Sound Level [dB(A)]
HM
L
MC12Y3JM 38 35 32
MC18Y3JM 38 37 34
4.9ft
Ceiling
Notes:
- Sound measured at 4.9ft away from the unit.
- Data is valid at free field condition.
- Data is valid at nominal operation condition.
- Reference accoustic pressure 0dB=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.