York ZT SERIES - Page 97

5167821-YTG-K-1118
Johnson Controls Ducted Systems 97
Unit description/model ZT049 / 4 ton / high static belt drive
Test configuration Vertical (bottom supply) ducted discharge
Indoor blower speed (RPM)
962 - 5.5 turns open equivalent 1,092 - 3.5 turns open equivalent 1,190 - 2.0 turns open equivalent
External static pressure (IWG)
1.0 1.6 2.0
Nominal airflow (CFM)
1,600 1,400 1,200
Blower motor BHP
0.86 1.03 1.13
Octave center freq. Hz
ID blower only (dB)
Cooling operation
1
(dB)
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.
ID blower only (dB)
Cooling operation
1
(dB)
ID blower only (dB)
Cooling operation
1
(dB)
63
83 84 82 82 83 83
125
80 81 79 80 80 81
250
75 75 74 75 75 75
500
71 72 70 71 71 72
1000
66 67 70 71 72 72
2000
63 64 64 64 65 65
4000
64 64 64 64 65 66
8000
58 59 59 59 60 60
Unit description/model ZT061 / 5 ton / high static belt drive
Test configuration Vertical (bottom supply) ducted discharge
Indoor blower speed (RPM)
1,033 - 5.5 turns open equivalent 1,135 - 3 turns open equivalent 1,175 - 2.5 turns open equivalent
External static pressure (IWG)
1.0 1.6 2.0
Nominal airflow (CFM)
2,000 1,135 1,175
Blower motor BHP
1.11 1.25 1.39
Octave center freq. Hz
ID blower only (dB)
Cooling operation
1
(dB)
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.
ID blower only (dB)
Cooling operation
1
(dB)
ID blower only (dB)
Cooling operation
1
(dB)
63
83 83 83 83 85 86
125
84 84 82 82 79 81
250
79 80 77 78 66 66
500
73 73 70 71 65 66
1000
69 70 69 70 61 65
2000
67 67 65 66 60 61
4000
67 68 66 67 61 62
8000
62 63 60 61 54 54