JOHNSON CONTROLS
271
SECTION 8 - MICROPANEL
FORM 201.23-NM2
ISSUE DATE: 3/9/2015
8
Sound Limit Setpoint
PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
SOUND LIMIT SETPOINT = XXX %
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.
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
. Note that the Imperial units are exact values
while the Metric units are only approximate.
TABLE 17 -
PROGRAMMABLE OPERATING PARAMETERS
PROGRAM VALUE
MODE
LOW LIMIT
HIGH LIMIT
DEFAULT
Suction Pressure Cutout
Water
Cooling
24.0 PSIG
36.0 PSIG
24.0 PSIG
1.65 Bars
2.48 Bars
1.65 Bars
Glycol
Cooling
5.0 PSIG
36.0 PSIG
24.0 PSIG
0.34 Bars
2.48 Bars
1.65 Bars
Low Ambient Temp. Cutout
-
-2°F
50.0°F
25.0°F
-18.9°C
10.0°C
2.2°C
Leaving Chilled Liquid Temp. Cutout
Water
Cooling
-
-
36.0°F
-
-
2.2°C
Glycol
Cooling
11.0°F
36.0°F
36.0°F
-11.7°C
2.2°C
2.2°C
Motor Current Limit
-
30%
103%
103%
Pulldown Motor Current Limit
-
30%
100%
100%
Pulldown Motor Current Limit Time
-
0 Min
255 Min
0 Min
Suction Superheat Setpoint
-
8.0°F
12.0°F
10.0°F
4.4°C
6.6°C
5.6°C
Unit ID Number
-
0
7
0
Sound Limit Setpoint
Sound Limit
Option Enabled
0%
100%
0%
Summary of Contents for YCIV0157
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