JOHNSON CONTROLS
88
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 4 - TECHNICAL DATA
LD19948
3
5
2
4
1
Evaporator Side
Background
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.
