JOHNSON CONTROLS
264
FORM 201.23-NM2
ISSUE DATE: 09/25/2020
SECTION 8 - MICROPANEL
Local / Remote Control Mode Selection
Local or Remote Control Mode allows the user to se-
lect the chilled liquid temperature control mode.
OPTIONS LOCAL / REMOTE CONTROL MODE
◄ ► XXXXXXXXXXXXXXXXXX
When LOCAL CONTROL mode is selected, chilled
liquid control is from the keypad of the chiller. In local
mode, a remote device can read system data, but not
reset operating parameters.
OPTIONS LOCAL / REMOTE CONTROL MODE
◄ ► LOCAL CONTROL
When REMOTE CONTROL mode is selected, control
of the chilled liquid setpoint is from a remote device
such as an ISN/BAS controller.
OPTIONS LOCAL / REMOTE CONTROL MODE
◄ ► REMOTE CONTROL
The default mode will be LOCAL.
Display Units Selection
Imperial or SI display units may be selected for data
display.
OPTIONS DISPLAY UNITS
◄ ► XXXXXXXXXXXXXXXXXX
The user may select system operating temperatures and
pressures to be displayed in either SI (°C, Barg) or Im-
perial units (°F, PSIG).
OPTIONS DISPLAY UNITS
◄ ►
IMPERIAL
OPTIONS DISPLAY UNITS
◄ ► SI
The default mode is IMPERIAL.
System Lead/Lag Control Mode Selection
The operator may select the type of lead/lag control
desired.
OPTIONS LEAD / LAG CONTROL MODE
◄ ► XXXXXXXXXXXXXXXXXX
In most cases, automatic lead/lag will be selected.
When automatic lead/lag is selected, the microproces-
sor will attempt to balance run time by switching the
lead compressor whenever all compressors are shut
off. If a compressor is not able to run when the mi-
croprocessor attempts a start, the microprocessor will
select another compressor in an effort to control chilled
liquid temperature. Manual lead/lag allows selecting a
specific compressor to be the lead. If #2 is selected as
the lead in a 3 compressor chiller, the sequence will be
2, 3, and 1.
OPTIONS LEAD / LAG CONTROL MODE
◄ ►
AUTOMATIC
The default mode will be AUTOMATIC.
Lag selections of individual systems will appear as:
OPTIONS LEAD / LAG CONTROL MODE
◄ ► MANUAL SYS 1 LEAD
OPTIONS LEAD / LAG CONTROL MODE
◄ ► MANUAL SYS 2 LEAD
OPTIONS LEAD / LAG CONTROL MODE
◄ ► MANUAL SYS 3 LEAD
SYSTEM 3 LEAD may be selected only on 3 and 4
compressor units.
OPTIONS LEAD / LAG CONTROL MODE
◄ ► MANUAL SYS 4 LEAD
SYSTEM 4 LEAD may be selected only on 4 compres-
sor units.
Содержание YCIV Series
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