York ZT SERIES - Page 96

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.