253
JOHNSON CONTROLS
FORM 201.21-NM4 (616)
253
JOHNSON CONTROLS
8
SCHEDULE
SOUND LIMIT = XXX %
MON START = 06:00 AM STOP = 10:00 PM
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 SCHED-
ULE is selected under the CHOOSE SCHEDULE
display, the following message will appear:
The Sound Limit option can be enabled and disabled
once each day or the chiller can be set to run continuous-
ly 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 Mon-
day schedule. Be aware of this when
programming.
