Noise Level; Indoor Unit - Mitsubishi Heavy Industries FDTVA402HEN1R Technical Manual

Models FDUR501R, 601R
2
18
16
14
12
1
8
6
5
Standard
pressure
4
2
33.5 35.5 37.5 39.5 41.5 43.5 45.5 47.5 49.5
Lower
limit
Air flow(m

1.2.9 Noise level

Notes (1) The data are based on the following conditions.
Ambient air temperature: Indoor unit 27˚C DB, 19˚C WB. Outdoor unit 35˚C DB.
Notes (2) The data in the chart are measured in an unechonic room.
Notes (3) The noise levels measured in the field are usually higher than the data because of reflection.
Notes (4) Noise levels for the FDT, FDEN and FDKN series show the noise level when in the Powerful mode.

(1) Indoor unit

(a) Ceiling recessed type (FDT)
Model FDTA201R
Noise level 36 dB (A) at HIGH
33 dB (A) at MEDIUM
32 dB (A) at LOW
60
50
40
30
20
10
63 125 250 500 1000
Mid Octave Band Frequency (Hz)
5
42
Upper
Standard
limit
air flow
3 /min)
Measured based on JIS B 8616
Mike position as right
Model FDTA251R
Noise level 38 dB (A) at HIGH
60
60
50 50
40 40
30 30
20 20
10 10
2000 4000 8000 63
35 dB (A) at MEDIUM
33 dB (A) at LOW
125 250 500 1000 2000
Mid Octave Band Frequency (Hz)
80
- -
1.5m
Mike (center & low points)
Model FDTA301R
Noise level 38 dB (A) at HIGH
60
60
50 50
40
40
30
30
20 20
10 10
4000 8000 63 125 250
Mid Octave Band Frequency (Hz)
35 dB (A) at MEDIUM
33 dB (A) at LOW
60
50
40
30
20
10
500 1000 2000 4000 8000