JOHNSON CONTROLS
113
FORM 100.50-NOM12
ISSUE DATE: 04/02/2019
6
SECTION 6 – USER INTERFACE CONTROL CENTER
USER INTERFACE CONTROL CENTER
The User Interface is used to commission, monitor,
and troubleshoot the rooftop unit. It provides access to
operational data, parameter programming, and access
to past “history” information that was recorded at the
time of a unit or system fault.
The User Interface is installed in the low voltage con-
trol compartment of the rooftop unit.
The User Interface uses a flexible membrane style key-
pad and has an 80-character (2 lines of 40 characters)
liquid crystal display. The display has a lighted back-
ground for night viewing and can be viewed in direct
sunlight. The backlighting will energize when any but-
ton is pressed.
The keypad allows complete control of the system
from a central location. The keypad offers a multitude
of commands available to access displays, program pa-
rameters, and initiate system commands. The keypad
consists of 36 keys, that are divided into three catego-
ries: Data Entry, Navigation, and Menu Selection keys.
A description of each of the keys is contained below.
Data Entry Keys
The Data Entry keys provide a means to enter values
for items that support edits. The keys available to sup-
port numeric input are the 0 through 9 keys, the deci-
mal key, the +/- key, the
X
key and the
key. The keys
available to support choice input are the ◄ key, the
► key, the
X
key, and the
key. Editing is started by
pressing the
key.
Once editing has started, the user
must press either the
key or the
X
key
. Any other
key press will result in the “
Press
or
X
to Exit
” mes-
sage displayed for two seconds. If you try to edit an
item that is view only it is ignored by the menu system.
FIGURE 59 -
USER INTERFACE CONTROL PANEL
STATUS
UNIT DATA
COOLING
COMPRESSOR SYSTEMS
SUPPLY SYSTEM
HEATING
ECONOMIZER
VENTILATION
EXHAUST
SETPOINTS
PROGRAM
OPTIONS
DATE/TIME
SCHEDULE
OPERATING HOURS
START COUNTER
SERVICE
HISTORY
UNIT
LD010669