Figure 26 - Sample Sound Testing - York EX Series Installation, Operation & Maintenance Instructions Manual

SECTION 4 - TECHNICAL DATA
1
B Side
(Burner Side)
LOCATION* OVERALL
1 78/87
2 76/89
3 79/93
4 80/88
5 67/82
* Position of Measuring instrument
Height:1.5 m, Horizon:1.0 m (from chiller-heater surface)
NOTE: These data are reference value, 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.

FIGURE 26 - SAMPLE SOUND TESTING

76
31.5 Hz 63 Hz 125 Hz
36/70 52/78 65/82
43/77 55/80 65/82
50/85 57/80 69/83
40/74 52/77 64/79
35/73 42/69 60/77
4 Evaporator Side
2 Generator Side
OCTAVE BAND
250 Hz 500 Hz 1 kHz
62/71 63/67 66/66
64/73 61/64 65/64
65/73 61/63 62/62
59/67 58/62 66/66
53/62 51/55 54/54
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
3
A Side
(Flue Gas
Duct Side)
Background
Noise
5
LD20184
2 kHz 4 kHz 8 kHz
70/69 66/63 60/57
66/64 63/61 55/55
66/65 65/63 61/58
70/69 67/66 63/61
53/52 48/47 34/33
JOHNSON CONTROLS
16 kHz
49/47
42/40
38/36
41/39
25/25