5167821-YTG-J-0518
38
Johnson Controls Ducted Systems
Indoor Sound Power Levels (Vertical Ducted Discharge, Standard Static Belt Drive)
UNIT DESCRIPTION / MODEL
ZT061 / 5 Ton / Standard Static Belt Drive
TEST CONFIGURATION
Vertical (Bottom Return) Ducted Inlet
Indoor Blower Speed (RPM)
812 - 3 Turns Open Equivalent
915- 1 Turn Open Equivalent
External Static Pressure (IWG)
0.6
0.8
Airflow (CFM)
1575
1800
Blower Motor BHP
0.64
0.83
Octave Center Freq. Hz
ID Blower Only (dB)
Cooling Operation
1
(dB)
ID Blower Only (dB)
Cooling Operation
1
(dB)
63
75
78
80
80
125
66
80
69
81
250
59
66
62
65
500
60
60
63
63
1000
57
57
60
60
2000
52
53
55
55
4000
49
50
53
53
8000
44
45
47
47
1. Differentials for Cooling Operation (IDB, COMP, & ODF) are logarithmically calculated from the horizontal flow sound test.
• Tested in accordance with AHRI Standard 260-2001. Refer to 2001 Standard for Sound Rating of Ducted Air Moving and Conditioning
Equipment.
• Testing datum includes effect of standard inlet air filters.
• Test duct dimension: 18 in. wide x 28 in. high x 8 ft. long, no elbows.
• Test duct termination is flush with reverberant room wall.
• Duct end (sound reflection) corrections included: (7.2, 3.4, 1.2, 0.4, 0.1, 0, 0, 0) dB at (63, 125, 250, 500, 1k, 2k, 4k, 8k) Hz respectively.
UNIT DESCRIPTION / MODEL
ZT037 / 3 Ton / Standard Static Belt Drive
TEST CONFIGURATION
Vertical (Bottom Supply) Ducted Discharge
Indoor Blower Speed (RPM)
609 - 3 Turns Open Equivalent
712 - 1 Turn Open Equivalent
External Static Pressure (IWG)
0.4
0.6
Airflow (CFM)
850
950
Blower Motor BHP
0.32
0.42
Octave Center Freq. Hz
ID Blower Only (dB)
Cooling Operation
1
(dB)
ID Blower Only (dB)
Cooling Operation
1
(dB)
63
76
77
81
81
125
68
68
72
72
250
55
65
57
57
500
56
57
57
57
1000
51
57
52
56
2000
49
49
50
50
4000
48
48
49
51
8000
46
46
47
48
1. Differentials for Cooling Operation (IDB, COMP, & ODF) are logarithmically calculated from the horizontal flow sound test.
• Tested in accordance with AHRI Standard 260-2001. Refer to 2001 Standard for Sound Rating of Ducted Air Moving and Conditioning
Equipment.
• Testing datum includes effect of standard inlet air filters.
• Test duct dimension: 18 in. wide x 28 in. high x 8 ft. long, no elbows.
• Test duct termination is flush with reverberant room wall.
• Duct end (sound reflection) corrections included: (7.2, 3.4, 1.2, 0.4, 0.1, 0, 0, 0) dB at (63, 125, 250, 500, 1k, 2k, 4k, 8k) Hz respectively.
