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SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
The Programmable values and Navigation commands
are also subject to access level restrictions as described
below. For each of these elements, an indication is
given to show the minimum access level required to
program the value or navigate to the subscreen.
DISPLAY ONLY
Values in this group are read-only parameters of in-
formation about the chiller operation. This type of in-
formation may be represented by a numerical value, a
text string, or an LED image. For numerical values, if
the monitored parameter is above the normal operat-
ing range, the high limit value will be displayed along
with the '>' symbol; if it is below the normal operating
range, the low limit value will be displayed along with
the '<' symbol. In some cases, the value may be ren-
dered invalid by other conditions and the display will
use X's to indicate this.
PROGRAMMABLE
Values in this group are available for change by the
user. In order to program any setpoints on the system,
the user must first be logged in with the appropriate ac-
cess level. Each of the programmable values requires
a specific access level which will be indicated beside
the specified value. All of the programmable controls
in the system fall into one of the categories described
below:
Access Level
In order to program any setpoints on the system, the
user must first login with an appropriate access level.
When power is applied to the chiller, the system begins
with an access level of VIEW. This will allow the user
to navigate to most screens and observe the values dis-
played there. However, the user will not be allowed to
change any values. To change any values, the user must
return to the HOME Screen (shown by default when
power is applied to the system), and use the LOGIN
button or utilize the CHANGE SETPOINTS key de-
scribed below. At this point, the user will be prompted
to enter a User ID and the corresponding password. By
default, the User ID is zero (0). In order to gain stan-
dard OPERATOR level access, the password would be
entered as 9 6 7 5, using the numeric keypad. OPERA-
TOR access reverts to the VIEW level after 10 continu-
ous minutes without a keypress. If a custom User ID
and password have been defined (refer to User Screen
on Page 128), the user may enter that User ID and the
corresponding password value.
18
If the correct password is received, the user is autho-
rized with the appropriate access level. If an incorrect
password is entered, the user is notified of the failure
and prompted again. At this point the user may retry
the password entry, or cancel the login attempt.
Change Setpoints
On screens containing setpoints programmable at the
OPERATOR access level, a key with this label will be
visible if the present access level is VIEW. This key
brings up the access level prompt described above. It
allows the user to login at a higher access level without
returning to the HOME Screen. After login, the user
may then modify setpoints on that screen.
Setpoints
The Control Center uses the setpoint values to control
the chiller and other devices connected to the chiller
system. Setpoints can fall into several categories. They
could be numeric values (such as 45.0°F for the Leav-
ing Chilled Liquid Temperature), or they could enable
or disable a feature or function.
Regardless of which setpoint is being programmed, the
following procedure applies:
1. Press the desired setpoint key. A dialog box ap-
pears displaying the present value, the upper and
lower limits of the programmable range, and the
default value.
2. If the dialog box begins with the word ENTER,
use the numeric keys to enter the desired value.
Leading zeroes are not necessary. If a decimal
point is necessary, press the '•' key (i.e. 45.0).
Pressing the ▲ key, sets the entry value to the de-
fault for that setpoint. Pressing the ▼ key, clears
the present entry. The ◄ key is a backspace key
and causes the entry point to move back one space.
If the dialog box begins with SELECT, use the
◄ and ► keys to select the desired value.
If the previously defined setpoint is desired, press
the 'X' (Cancel) key to dismiss the dialog box.
3. Press the '' (Enter) key.
4. If the value is within range, it is accepted and the
dialog box disappears. The chiller will begin to
operate based on the new programmed value. If
out of range, the value will not be accepted and
the user is prompted to try again.
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
JOHNSON CONTROLS
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