5167821-YTG-K-1118
96
Johnson Controls Ducted Systems
Indoor sound power levels (vertical ducted discharge, high static belt drive)
Unit description/model
ZT061 / 5 ton / high static belt drive
Test configuration
Vertical (bottom return) ducted inlet
Indoor blower speed (RPM)
1,039 - 5 turns open equivalent
1,143 - 3 turns open equivalent
1,201 - 2 turns open equivalent
External static pressure (IWG)
1.0
1.6
2.0
Nominal airflow (CFM)
2,000
1,800
1,600
Blower motor BHP
1.11
1.25
1.39
Octave center freq. Hz
ID blower only (dB)
Cooling operation
1
(dB)
ID blower only (dB)
Cooling operation
1
(dB)
ID blower only (dB)
Cooling operation
1
(dB)
63
79
80
77
77
81
81
125
74
75
71
73
73
74
250
63
65
63
64
63
65
500
62
63
64
64
62
62
1000
61
61
61
61
59
59
2000
55
56
55
56
54
55
4000
52
52
50
51
50
50
8000
47
47
46
46
46
46
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 / high static belt drive
Test configuration
Vertical (bottom supply) ducted discharge
Indoor blower speed (RPM)
920 - 3.0 turns open equivalent
1,074 - fully closed equivalent
1,189 - 2.0 turns open equivalent
1
External static pressure (IWG)
1.0
1.6
2.0
1
Nominal airflow (CFM)
1,200
1,100
1,000
Blower motor BHP
0.68
0.93
1.09
Octave center freq. Hz
ID blower only (dB)
Cooling
operation
2
(dB)
ID blower only (dB)
Cooling
operation
2
(dB)
ID blower only (dB)
Cooling
operation
2
(dB)
63
81
82
81
81
82
82
125
78
78
78
78
81
81
250
69
70
70
71
74
74
500
67
68
68
69
71
71
1000
62
63
67
68
70
71
2000
60
61
62
63
65
66
4000
61
61
63
63
66
66
8000
54
55
57
57
60
61
1. Requires driven pulley #AK-56, normal high static pulley is an #AK-69.
2. 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.
