McQuay MWM-LW Technical Manual page 20

Chilled water fan coil units
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Sound Data
Model
Speed
High
MCM15EW
Med
Low
High
MCM20EW
Med
Low
High
MCM25EW
Med
Low
Microphone position: 1m in front of the unit and 1m below the air discharge opening.
Model
Speed
High
MCC010CW
Med
Low
High
MCC015CW
Med
Low
High
MCC020CW
Med
Low
High
MCC025CW
Med
Low
High
MCC028CW
Med
Low
High
MCC030CW
Med
Low
High
MCC038CW
Med
Low
High
MCC040CW
Med
Low
High
MCC050CW
Med
Low
High
MCC060CW
Med
Low
Microphone position: 1.5m below the centre of the unit.
(Tested with 2m length duct at the air discharge outlet and air return inlet)
17
1/1 Octave A-Weighted Sound Pressure (dBA), ref 20μPa Overall
125Hz
250Hz
500Hz
42
46
49
36
40
43
34
38
41
45
47
51
43
46
49
42
46
47
47
50
53
44
46
49
38
40
43
1/1 Octave A-Weighted Sound Pressure (dBA), ref 20μPa Overall
125Hz
250Hz
500Hz
43
35
35
43
34
34
42
31
31
46
40
40
45
38
38
40
33
33
47
41
43
47
41
41
47
39
39
48
41
40
47
39
39
44
35
35
45
42
39
42
38
37
36
33
33
50
45
43
45
40
40
42
36
37
54
51
48
51
48
46
47
45
44
54
47
47
49
42
43
45
39
41
54
49
49
53
47
46
51
45
44
55
49
49
53
46
47
51
43
44
1kHz
2kHz
4kHz
44
43
36
37
36
27
34
33
23
48
47
40
46
44
37
44
42
35
50
50
43
46
45
38
38
37
28
1kHz
2kHz
4kHz
30
26
18
28
25
17
27
22
14
33
29
21
31
27
18
26
21
11
35
31
24
34
31
23
33
29
21
35
31
24
34
29
22
30
25
17
35
31
26
32
28
22
27
23
16
42
37
31
38
32
26
33
28
22
46
41
36
45
37
32
41
34
28
45
39
35
41
35
31
37
30
26
48
43
37
47
40
35
44
36
32
50
44
37
47
39
34
43
35
30
Noise
(dBA)
Criteria
8kHz
31
50
45
20
43
38
15
41
36
34
53
48
31
51
45
27
49
43
39
56
51
33
51
46
22
44
38
Noise
(dBA)
Criteria
8kHz
13
36
30
12
35
29
9
33
25
17
40
35
14
38
33
9
33
28
19
42
38
18
41
36
16
40
34
19
41
35
17
40
34
12
36
30
22
41
34
17
38
32
11
34
27
26
46
41
20
42
37
15
38
32
31
51
45
26
48
44
22
45
40
29
49
44
24
45
40
18
41
36
32
52
47
29
50
46
26
47
43
33
53
49
28
50
46
24
47
42

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