YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

FORM 201.28-NM1.1
ISSUE DATE: 8/29/2012
CLOCK FRI 18-JUN-2011 10:15:33 AM
YEAR = XXXX
The year can be selected by keying in the numerical
value to select the year. After the year is selected, the �
(ENTER) key must be pressed to store the data.
Pressing the ▼ (DOWN ARROW) key again scrolls
to the hour:
CLOCK FRI 18-JUN-2011 10:15:33 AM
HOUR = XX
The hour can be selected by keying in the numerical
value for the hour. After the hour is selected, the �
(ENTER) key must be pressed to store the data.
One or two “0’s” must be keyed in for
hours 00-09.
Pressing the ▼ (DOWN ARROW) key again scrolls
to the minute:
CLOCK FRI 18-JUN-2011 10:15:33 AM
MINUTE = XX
The minute can be selected by keying in the numerical
value for the hour. After the minute is selected, the �
(ENTER) key must be pressed to store the data.
One or two “0’s” must be keyed in for
minutes 00 through 09.
Pressing the ▼ (DOWN ARROW) key again scrolls
to AM/PM:
CLOCK FRI 18-JUN-2011 10:15:33 AM
AM/PM ◄ ► = XX
AM/PM can be selected by pressing the ◄ or ►
(ARROW) keys. After the meridian is selected, the
�(ENTER) key must be pressed to store the data.
Pressing the ▼ (DOWN ARROW) key again scrolls to
the time format selection:
CLOCK FRI 18-JUN-2011 10:15:33 AM
TIME FORMAT ◄ ► = XXXXXXX
SECTION 8 - MICROPANEL
The time format may be displayed in either a 12 hour
or 24 hour format. Selection can be changed by pressing
the ◄ or ► (ARROW) keys. The �(ENTER) key
must be pressed to store the data.
Schedule Key Operation
The Daily Schedule must be programmed for the unit
start and stop times. To set the schedule, press the
SCHEDULE key. The display will provide a message
allowing access to 2 types of schedule information:
SCHEDULE CHOOSE SCHEDULE TYPE
◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX
The schedule types are:
• UNIT OPERATING SCHEDULE
• (Default selection)
• SOUND LIMIT SCHEDULE
(Only if Sound Limiting is enabled by the factory
when the option is installed.)
The schedule type (UNIT OPERATING SCHEDULE
or SOUND LIMIT SCHEDULE) may be changed by
pressing the ◄ (LEFT ARROW) or ► (RIGHT AR-
ROW) keys followed by the �(ENTER) key. The selection
must be entered by pressing the � (ENTER)
key before a schedule display will appear.
Unit Operating Schedule
The Unit Operating Schedule is used to enable/disable
the chiller unit on time of day. The chiller can be
enabled and disabled once each day or it can be programmed
to run continuously. Any time the daily or
holiday schedule shuts the chiller down, the running
system(s) will go through a controlled ramped shutdown.
If the UNIT OPERATING SCHEDULE is selected
under the CHOOSE SCHEDULE display, the
following message will appear:
SCHEDULE UNIT OPERATING
MON START = 06:00 AM STOP = 10:00 PM
The line under the 0 above is the cursor. If the start
time is wrong, it can be changed by keying in the new
time from the numeric keypad. Once the correct values
for the START hour and minute are entered, press
the � (ENTER) key. The cursor will then move to the
AM/PM selection. The meridian (AM/PM) value may
be changed by the ◄ (LEFT ARROW) or ► (RIGHT
ARROW) keys and entered by pressing � (ENTER)
key. Repeat this process for the STOP time. Once a
schedule is entered, the schedule for the next day will
JOHNSON CONTROLS 121
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