5167821-YTG-J-0518
34
Johnson Controls Ducted Systems
Sound Performance
Indoor Sound Power Levels (3 thru 5 Ton)
Indoor Sound Power Levels (Horizontal Ducted Inlet, Standard Static Belt Drive)
UNIT DESCRIPTION / MODEL
ZT037 / 3 Ton / Standard Static Belt Drive
TEST CONFIGURATION
Horizontal (Side Return) Ducted Inlet
Indoor Blower Speed (RPM)
612 - 3 Turns Open Equivalent
709 - 1 Turn Open Equivalent
External Static Pressure (IWG)
0.5
0.4
Airflow (CFM)
850
1300
Blower Motor BHP
0.37
0.40
Octave Center Freq. Hz
ID Blower Only (dB)
Cooling Operation
1
(dB)
ID Blower Only (dB)
Cooling Operation
1
(dB)
63
73
77
73
77
125
61
70
66
71
250
56
63
60
64
500
51
56
55
57
1000
44
48
51
52
2000
41
44
48
49
4000
44
47
47
48
8000
42
44
43
44
1. Cooling Operation – ID blower, compressor and outdoor fan operating at 230 VAC.
• 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
ZT049 / 4 Ton / Standard Static Belt Drive
TEST CONFIGURATION
Horizontal (Side Return) Ducted Inlet
Indoor Blower Speed (RPM)
612 - 3 Turns Open Equivalent
709 - 1 Turn Open Equivalent
External Static Pressure (IWG)
0.5
0.4
Airflow (CFM)
850
1300
Blower Motor BHP
0.37
0.40
Octave Center Freq. Hz
ID Blower Only (dB)
Cooling Operation
1
(dB)
1. Cooling Operation – ID blower, compressor and outdoor fan operating at 230 VAC.
• 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)
63
73
77
73
77
125
61
70
66
71
250
56
63
60
64
500
51
56
55
57
1000
44
48
51
52
2000
41
44
48
49
4000
44
47
47
48
8000
42
44
43
44