4
Sound Power and Pressure Data
Sound Pressure
Model
HW-06-ECM
HW-15-ECM
HW-18-ECM
A-weighted
33.8
24.6
20.7
40.9
27.9
24.3
44.4
39.4
32
Sound Pressure dB(A)
Sound
Pressure
in 1/3
Octave-
bands
(unit: dB)
31.5Hz
11.5
-8.4
-5.1
1.1
-4.6
-3.8
-5.7
-5.3
2.2
63Hz
10
-3.8
-5.9
3.8
-6.2
-5.4
13.1
5.3
1.9
125Hz
17
-0.8
-3.8
12.9
1.7
2.5
17.9
11.2
5.8
250Hz
30.3
13.2
8.6
29
15.3
16.1
33.1
26.9
20.3
500Hz
35.1
17.3
11.9
32.4
20.5
21.3
36.6
31.1
25.9
1000Hz
32.3
11.9
7.1
31
16.4
17.2
34.7
29.3
22.2
2000Hz
26.1
7.7
5.9
26.6
10.3
11.1
31.5
24.6
15.2
4000Hz
18.3
6.6
6.1
16.9
6.3
7.1
22.5
15.3
8.7
8000Hz
14.8
5.7
5.1
7.8
4.9
5.7
11.2
6.9
5.7
16000Hz
8
-1.4
-1.3
-1.3
-2.2
-1.4
-1.1
1.5
-1.4
Speed
H
M
L
H
M
L
H
M
L
Model
Fin Height
(inch)
Fin Length
(inch)
Fins per Inch No. of Rows No. of Copper No. of Circuits Tube Diameter
(inch)
HW-06-ECM
14.1
26.8
19.5
2
20
4
0.3
HW-15-ECM
14.1
26.8
2
26
5
0.3
HW-18-ECM
14.1
26.8
2
34
5
0.3
Coil Data – 2-Pipe Systems
