Specifications

83
JOHNSON CONTROLS
Form 201.28-NM1.EN.PED/CE (0211)
8
The Holiday schedule must be programmed weekly. If
there is no holiday, the “*” key is also used to delete the
“*”. The  (ENTER) key is used to accept the holiday
schedule for the entire week.
The HOLIDAY SCHEDULE is a temporary
schedule. Once the schedule is executed,
the selected holidays will be cleared from
memory for the following week.
Sound Limit Schedule
The SOUND LIMIT SCHEDULE allows setting the
day and time when the user desires using the “SILENT
NIGHT” factory programmed option to limit chiller
loading and fan operation for reduced audible noise in the
surrounding area. If the SOUND LIMIT SCHEDULE is
selected under the CHOOSE SCHEDULE display, the
following message will appear:
SCHEDULE SOUND LIMIT = XXX %
SUN START = 00:00 AM STOP = 00:00 AM
The Sound Limit option can be enabled and disabled
once each day or the chiller can be set to run continuously
in this mode for sound limiting whenever the chiller is
operating. When sound limiting is enabled, the unit will
be limited by the Sound Limit setpoint % as set under
the PROGRAM key. XXX in the display above will
show the Sound Limit Setpoint % programmed under
the PROGRAM key. 0% will cause no speed reduction,
while 100% only allows running at minimum speed.
The START Time for a specific day (hour and minute)
is entered using the same guidelines used for the start/
stop schedules, and press the  (ENTER) key to store it
into memory. The cursor will then move to the AM/PM
selection.
The AM/PM selection may be chosen using the ◄ (LEFT
ARROW) or ► (RIGHT ARROW) keys and pressing
 (ENTER) key to store the value.
This process is repeated for the STOP time.
Once the schedule for a specific day is programmed and
entered, the schedule for the next day will appear. The
schedule for each day may be programmed the same or
differently.
To view the schedule without changing it, simply press
the SCHEDULE key or the ▼ (DOWN ARROW) key
until the desired day is displayed. The ▲ (UP ARROW)
key will scroll backwards to the previous screen.
If the schedule is changed for Monday, all
other days will change to the Monday
schedule. Be aware of this when
programming.
MANUAL OVERRIDE KEY
Manual Override Key Operation
If the MANUAL OVERRIDE key is pressed during a
schedule shutdown, the STATUS display will display the
message below. This indicates that the Daily Schedule is
being ignored and the chiller will start when chilled liquid
temperature allows, Remote Contacts, UNIT switch and
SYSTEM switches permitting. This is a priority message
and cannot be overridden by anti-recycle messages,
fault messages, etc. when in the STATUS display mode.
Therefore, do not expect to see any other STATUS
messages when in the MANUAL OVERRIDE mode.
MANUAL OVERRIDE is to only be used in emergencies
or for servicing. Manual override mode automatically
disables itself after 30 minutes.
UNIT STATUS
MANUAL OVERRIDE