Sound performance – York 251934-YTG-J-0910 User Manual
Page 69
251934-YTG-J-0910
Johnson Controls Unitary Products
69
Sound Performance
Electric Heat Multipliers
Voltage
kW Capacity Multipliers
1
1. Electric heaters are rated at nominal voltage. Use this table to determine the electric heat capacity for
heaters applied at lower voltages.
Nominal
Applied
240
208
0.75
230
0.92
480
460
0.92
600
575
0.92
ZJ/ZR/ZF Indoor Sound Power Levels
Size
(Tons)
CFM
ESP
(IWG)
Blower
Sound Power, dB (10
-12
) Watts
Sound Rating
1
dB (A)
Octave Band Centerline Frequency (Hz)
RPM
BHP
63
125
250
500
1000
2000
4000
8000
180 (15)
6000
1.0
1,080
4.6
91
88
90
90
87
85
81
81
76
210 (17.5)
7000
1.0
940
5.1
85
84
84
82
81
81
77
74
69
240 (20)
8000
1.0
1,020
6.6
86
85
85
83
82
82
78
75
70
300 (25)
10000
1.3
1,160
12.5
92
91
91
89
88
88
84
81
76
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric/free field. The dBA values
provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan manufacturer has no way
of knowing the details of each system. This constitutes an exception to any specification or guarantee requiring a dBA value of sound data
in any other form than sound power level ratings.
ZJ/ZR/ZF Outdoor Sound Power Levels
Size
(Tons)
Sound Rating
1
dB (A)
Sound Power, dB (10
-12
) Watts
Octave Band Centerline Frequency (Hz)
63
125
250
500
1000
2000
4000
8000
180 (15)
92
90
93
91
89
86
83
80
75
210 (17.5)
92
91
94
92
89
86
83
81
76
240 (20)
92
91
94
92
89
87
83
81
76
300 (25)
92
92
95
93
89
87
84
81
77
1. Rated in accordance with ARI 270 standard.