York Predator ZT037 Technical Manual page 43

Indoor Sound Power Levels (Vertical Ducted Inlet, High Static Belt Drive)
UNIT DESCRIPTION / MODEL
TEST CONFIGURATION
Indoor Blower Speed (RPM)
External Static Pressure (IWG)
Nominal Airflow (CFM)
Blower Motor BHP
Octave Center Freq. Hz
63
125
250
500
1000
2000
4000
8000
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.
UNIT DESCRIPTION / MODEL
TEST CONFIGURATION
Indoor Blower Speed (RPM)
External Static Pressure (IWG)
Nominal Airflow (CFM)
Blower Motor BHP
Octave Center Freq. Hz
63
125
250
500
1000
2000
4000
8000
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.
Johnson Controls Ducted Systems
927 - 3 Turns Open Equivalent
1.0
1,200
0.68
ID Blower Cooling
2
Only (dB) Operation
77 79
68 69
60 67
58 58
54 55
48 49
43 44
44 44
968 - 5.5 Turns Open Equivalent
1.0
1,600
0.86
ID Blower Cooling
1
Only (dB) Operation
77 79
69 73
63 63
63 64
59 59
54 54
49 49
45 46
ZT037 / 3 Ton / High Static Belt Drive
Vertical (Bottom Return) Ducted Inlet
1,085 - 1/2 Turn Open Equivalent
1.6
1,100
0.93
ID Blower
(dB) Only (dB) Operation
82
70
62
63
60
56
48
45
ZT049 / 4 Ton / High Static Belt Drive
Vertical (Bottom Return) Ducted Inlet
1,120 - 3.5 Turns Open Equivalent
1.6
1,400
1.03
ID Blower
(dB) Only (dB) Operation
78
71
63
62
59
53
48
45
5167821-YTG-J-0518
1,190 - 2.5 Turns Open Equivalent
Cooling ID Blower
2
(dB) Only (dB)
83 79
71 72
69 64
63 62
60 60
56 55
49 51
46 47
1,218 - 2.0 Turns Open Equivalent
Cooling ID Blower
1
(dB) Only (dB)
78 81
73 73
64 66
63 64
59 61
54 56
48 50
46 47
1
1
2.0
1,000
1.09
Cooling
2
Operation (dB)
81
73
67
63
60
55
51
47
2.0
1,200
1.13
Cooling
1
Operation (dB)
81
74
66
64
61
56
51
47
43