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FORM 201.23-NM2
ISSUE DATE: 3/9/2015
Sound Limit Setpoint
PROGRAM
◄DEF XXXXX LO XXXXX HI XXXXX
SOUND LIMIT SETPOINT
The sound limit setpoint is programmable from 0 to
100 % with a 0% default. 0% allows operating up to the
full speed capability of the unit with no sound limiting.
Typically the sound limit control setting will be pro-
grammed for 0 % unless sound limiting is utilized on
the chiller. Sound limiting will only permit the unit to
run to a frequency less than the maximum speed capa-
bility of the unit. Programming a value of 1% would be
the minimum sound limiting that can be programmed
and 100% will be the maximum. 100% will only allow
the unit speed to operate at the minimum frequency.
Usually, the sound limit % will be programmed some-
where between 0 and 100% according the limiting
needed to satisfy the sound requirements of the site.
Typically, sound limiting will be utilized in areas sensi-
tive to noise during night-time hours. The sound limit
display will only be present if the sound limit option is
programmed at the factory.
TABLE 17 - PROGRAMMABLE OPERATING PARAMETERS
PROGRAM VALUE
Suction Pressure Cutout
Low Ambient Temp. Cutout
Leaving Chilled Liquid Temp. Cutout
Motor Current Limit
Pulldown Motor Current Limit
Pulldown Motor Current Limit Time
Suction Superheat Setpoint
Unit ID Number
Sound Limit Setpoint
JOHNSON CONTROLS
= XXX %
MODE
Water
Cooling
Glycol
Cooling
-
Water
Cooling
Glycol
Cooling
-
-
-
-
-
Sound Limit
Option Enabled
Default Values
A listing of the low limits, high limits, and default
values for each of the programmable values is noted
in each display and can be found in Table 17 on page
271. Note that the Imperial units are exact values
while the Metric units are only approximate.
LOW LIMIT
HIGH LIMIT
24.0 PSIG
36.0 PSIG
1.65 Bars
2.48 Bars
5.0 PSIG
36.0 PSIG
0.34 Bars
2.48 Bars
-2°F
50.0°F
-18.9°C
10.0°C
-
-
11.0°F
36.0°F
-11.7°C
30%
30%
0 Min
255 Min
8.0°F
12.0°F
4.4°C
0
0%
SECTION 8 - MICROPANEL
DEFAULT
24.0 PSIG
1.65 Bars
24.0 PSIG
1.65 Bars
25.0°F
2.2°C
-
36.0°F
-
2.2°C
36.0°F
2.2°C
2.2°C
103%
103%
100%
100%
0 Min
10.0°F
6.6°C
5.6°C
7
0
100%
0%
271
8
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