Specifications

79
JOHNSON CONTROLS
Form 201.28-NM1.EN.PED/CE (0211)
8
OPTIONS KEY
Options Key Operation
The OPTIONS key provides the user with a display
of unit configuration and the capability to modify the
configuration. These options can only be viewed under
the OPTIONS key. To view the current options settings,
press the OPTIONS key. Each press of the OPTIONS
key or press of the ▲ or ▼ (ARROW) keys will scroll to
the next option setting. The ◄ and ► (ARROW) keys
allow changing the option choices. The  (ENTER)
key must be pressed after a selection is made to save the
change in memory.
An explanation of each option message is provided
below.
Display Language Selection
The display language can be selected for English, Italian,
Polish, Hungarian, German, French, Portuguese, and
Spanish.
OPTIONS DISPLAY LANGUAGE
< > ENGLISH
The default language will be English.
Chilled Liquid Cooling Mode Selection
The Chilled liquid cooling mode can be selected for
Water Cooling or low temperature Glycol Cooling.
OPTIONS CHILLED LIQUID COOLING MODE
< > WATER COOLING
When Water Cooling is chosen, the chilled liquid
temperature setpoint can only be programmed from 4°C
to 21°C (40°F to 70°F).
OPTIONS CHILLED LIQUID COOLING MODE
< > GLYCOL COOLING
When Glycol Cooling is chosen, the chilled liquid
temperature setpoint can be programmed from -12°C to
21°C (10°F to 70°F).
The default Chilled Liquid Mode will be WATER
COOLING.
Local / Remote Control Mode Selection
Local or Remote Control Mode allows the user to select
the chilled liquid temperature control mode.
OPTIONS LOCAL / REMOTE CONTROL MODE
< > LOCAL CONTROL
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
< > REMOTE CONTROL
When REMOTE CONTROL mode is selected, control
of the chilled liquid setpoint is from a remote device
such as an ISN/BAS controller.
The default mode will be LOCAL CONTROL.
Display Units Selection
Imperial or SI display units may be selected for data
display.
OPTIONS DISPLAY UNITS
< > SI
OPTIONS DISPLAY UNITS
< > IMPERIAL
The user may select system operating temperatures
and pressures to be displayed in either SI (°C, barg) or
Imperial units (°F, PSIG).
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
< > AUTOMATIC
In most cases, automatic lead/lag will be selected.
When automatic lead/lag is selected, the microprocessor
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 microprocessor
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.
The default mode will be AUTOMATIC.