SECTION 4 - TECHNICAL DATA
FORM 155.32-ICOM2.EN.UL
ISSUE DATE:1/10/2018
82
JOHNSON CONTROLS
Figure 40 -
Sample Sound Testing
* Position of Measuring instrument
Height:1.5 m, Horizon:1.0 m (from chiller-heater surface)
NOTE: These data are reference values, as the chiller-heater unit was not covered with the thermal insulation materials and the water pipes (for chilled/hot
water, and cooling water) were temporary during the measurement.
NOISE EMISSION INFORMATION
The direct fired chiller-heater running with the burner may produce noise in excess of 80 dB (A). Hearing
protection must be worn at all times according to the UL1995 requirement. when operating the direct fired
chiller-heater. This hearing protection may impact the awareness of the operators surroundings. It is
critical to pay attention to your environment in which you are working.
LOCATION*
OVERALL
OCTAVE BAND
31.5 HZ
63 HZ
125 HZ
250 HZ
500 HZ
1 KHZ
2 KHZ
4 KHZ
8 KHZ
16 KHZ
1
78/87
36/70
52/78
65/82
62/71
63/67
66/66
70/69
66/63
60/57
49/47
2
76/89
43/77
55/80
65/82
64/73
61/64
65/64
66/64
63/61
55/55
42/40
3
79/93
50/85
57/80
69/83
65/73
61/63
62/62
66/65
65/63
61/58
38/36
4
80/88
40/74
52/77
64/79
59/67
58/62
66/66
70/69
67/66
63/61
41/39
5
67/82
35/73
42/69
60/77
53/62
51/55
54/54
53/52
48/47
34/33
25/25
LD20184
B Side
A Side
1
4
2
3
5
Evaporator Side
Burner Side
Flue Gas
Duct Side
Background
Noise
Generator Side
