McQuay MCC-CW, Technical Manual, Page: 21 / 146

MFCU_(ii) Sound Data
18
Ceiling Concealed Fan Coil Unit
Ducted Split Fan Coil Unit
Overall Noise
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz (dBA) Criteria
High 33 30 30 29 22 16 10 33 27
Medium 31 28 28 26 20 13 8 30 24
Low 28 25 24 22 16 10 7 26 20
High 39 36 34 32 27 18 11 37 31
Medium 35 34 32 29 23 14 9 34 27
Low 32 29 28 25 17 11 8 29 23
High 42 39 36 24 28 22 17 38 33
Medium 41 37 34 31 26 20 15 36 30
Low 40 36 32 29 23 18 13 34 27
High 42 41 37 34 31 29 23 40 33
Medium 41 40 36 33 29 28 22 39 32
Low 36 35 33 31 26 27 21 36 30
High 45 42 39 35 31 26 22 41 34
Medium 42 38 37 32 28 22 17 38 32
Low 36 33 33 27 23 16 11 34 27
High 50 45 43 42 37 31 26 46 41
Medium 45 40 40 38 32 26 20 42 37
Low 42 36 37 33 28 22 15 38 32
High 54 51 48 46 41 36 31 51 45
Medium 51 48 46 45 37 32 26 48 44
Low 47 45 44 41 34 28 22 45 40
High 54 47 47 45 39 35 29 49 44
Medium 49 42 43 41 35 31 24 45 40
Low 45 39 41 37 30 26 18 41 36
High 54 49 49 48 43 37 32 52 47
Medium 53 47 46 47 40 35 29 50 46
Low 51 45 44 44 36 32 26 47 43
High 55 49 49 50 44 37 33 53 49
Medium 53 46 47 47 39 34 28 50 46
Low 51 43 44 43 35 30 24 47 42
Model
Speed
1/1 Octave Sound Pressure Level (dB, reference 20µPa)
MCC010CW
MCC015CW
MCC050CW
MCC060CW
MCC020CW
MCC025CW
MCC028CW
MCC030CW
MCC038CW
MCC040CW
Microphone position : 1.5m below the centre of the unit.
Tested with 2m length duct at the air discharge outlet and air return inlet.
Microphone position : 1.5m above the centre of the unit.
Tested with 2m length duct at the air discharge outlet and air return inlet.
Overall Noise
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
(dBA) Criteria (NC)
MDB075BW 55 54 54 51 49 44 36 56 50
MDB100BW 56 55 55 52 50 45 37 57 51
MDB125BW 57 55 56 53 51 46 38 58 53
MDB150BW 57 55 56 53 51 46 38 58 53
Model
1/1 Octave Sound Pressure Level (dB, reference 20µPa)