JOHNSON CONTROLS
88
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 4 - TECHNICAL DATA
3
5
2
4
1
Evaporator Side
Noise
Generator Side
B Side
(Hot Water
Inlet Side)
A Side
NOISE EMISSION
The chiller may produce the A-weighted emission
sound presssure level in excess of 80 dB (A), normally
the A-weighted sound power level is less than 100 dB
(A).
Hearing protection must be worn at all times when op-
erating the chiller.
This hearing protection may impact the manner in
which operators must communicate to be understood.
FIGURE 42 - SAMPLE SOUND TESTING FOR YHAU-CL/CH CHILLER
SOUND MEASURE LOCATIONS
Optional Condition 1 2 3 4 5
Full Load Operation 77 dba 79 dba 79 dba 78 dba 72 dba
Position of Measuring Instrument
Height: 59 inch, Horizon: 39 inch (from chiller surface)
Note: These are reference values, as the chiller unit was not insulated and water pipes were not permanently secured during the measure-
ment.
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