A30
SINGLE DUCT TERMINAL UNITS
A
SINGLE DUCT TERMINAL UNITS • 3000Q SERIES
Performance Data • AHRI Certification and Performance Notes
3000Q Series • Quiet • Dissipative Silencer • AHRI Certification Rating Points
Fiberglass Acoustic Media (FAM)
Ratings are certified in
accordance with AHRI
Standards.
Performance Notes for Sound Power Levels:
1. Discharge sound power is the noise emitted from the unit
discharge into the downstream duct. Discharge Sound
Power Levels (SWL) now include duct end reflection
energy as part of the standard rating. Including the duct
end correction provides sound power levels that would
normally be transmitted into an acoustically, non-reflective
duct. The effect of including the energy correction to
the discharge SWL, is higher sound power levels when
compared to previous AHRI certified data. For more
information on duct end reflection calculations see AHRI
Standard 880.
2. Radiated sound power is the breakout noise transmitted
through the unit casing walls.
3. Sound power levels are in decibels, dB re 10
-12
watts.
4. All sound data listed by octave bands is raw data without
any corrections for room absorption or duct attenuation.
Dash (-) in space indicates sound power level is less than
20 dB or equal to background.
5. Minimum inlet
'
Ps is the minimum operating pressure
requirement of the unit (damper full open) and the
difference in static pressure from inlet to discharge of the
unit.
6. Asterisk (*) in space indicates that the minimum inlet static
pressure requirement is greater than 0.5" w.g. (125 Pa) at
rated airflow.
7.
Data derived from independent tests conducted in
accordance with ANSI/ASHRAE Standard 130 and AHRI
Standard 880.
Inlet
Size
Airflow
Min. Inlet
Discharge Sound Power Levels
@ 1.5" w.g. (375 Pa)
'
Ps
Radiated Sound Power Levels
@ 1.5" w.g. (375 Pa)
'
Ps
'
Ps
Octave Band
Octave Band
cfm
I/s
"w.g. Pa
2
3
4
5
6
7
2
3
4
5
6
7
4
150
71
0.21
52
62
58
55
48
29
37
49
50
47
39
31
30
5
250
118
0.10
25
66
62
53
49
30
38
55
48
45
35
35
30
6
400
189
0.05
12
66
61
54
52
39
41
59
52
47
40
36
33
7
550
260
0.04
10
68
63
56
51
38
43
61
54
49
43
36
33
8
700
330
0.01
2
72
67
59
51
37
46
61
53
50
40
39
35
9
900
425
0.01
2
71
65
57
49
41
48
60
54
49
44
39
36
10
1100
519
0.02
5
71
65
56
49
46
51
60
54
50
45
39
36
12
1600
755
0.02
5
73
66
57
51
54
55
61
58
53
49
42
39
14
2100
991
0.02
5
72
66
61
56
57
57
63
61
55
48
44
43
16
2800 1321 0.12
30
73
67
61
55
57
59
65
63
57
50
44
39
24 x 16
5350 2525 0.01
2
87
80
77
72
74
75
72
70
70
65
60
55
