Johnson Controls YORK YVAM 0350, Руководство по эксплуатации и техническому обслуживанию

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OptiView control center functions and navigation
Each screen description in this section begins with an overview that describes the graphical
elements on the screen and gives a short summary of the functions available. Each element on the
screen is then categorized into three distinct groups: Display Only, Programmable, and Navigation.
The following section provides a short description of what types of information are included in
these groups.
The Programmable values and Navigation commands are also subject to access level restrictions as
described in the following sections. 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 information about the chiller operation. This
type of information 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 operating range, the high limit
value is displayed along with the greater than (>) symbol. If it is below the normal operating range,
the low limit value is displayed along with the less than (<) symbol. In some cases, the value may be
rendered invalid by other conditions and the display uses Xs to indicate this.
Programmable
Values in this group can be changed by the user. In order to program any setpoints on the system,
the user must first be logged in with the appropriate access level. Each of the programmable values
requires a specific access level that is indicated beside the specified value. All of the programmable
controls in the system fall into one of the categories described in the following sections.
Access level
The OptiView panel restricts certain operations based on password entry by the operator. Three
different access levels are provided as follows:
• View: The panel defaults to the lowest access level, which is termed View. In this mode, the
chiller operating values and setpoints can be observed, but no changes can be made.
• Operator: The second access level is termed Operator and this allows the customer to
change all of the setpoints required to operate the chiller system. In order to gain standard
operator level access, the Home screen logon password is entered as
9 6 7 5
, using the
numeric keypad.
• Service: In case advanced diagnostics are necessary, a Service access level is provided. Only
qualified service personnel use this access level. This level provides advanced control over
many of the chiller functions and allows calibration of many of the chiller controls. The access
levels are listed above in hierarchical order beginning with the lowest level and proceeding
to the highest level. Users logged in under higher access levels can perform any actions
available at lower access levels.
The operator access level has a 10 minute timeout. After 10 successive minutes without a keypress,
the panel reverts to the View access level. This prevents unauthorized changes to the chiller if a
user was logged on at a higher access level and failed to log off. After making necessary setpoint
adjustments, return to the Home Screen and log off.
Change setpoints
On screens that contain setpoints that are programmable at the operator access level, a button
with this label is visible if the present access level is View. This button brings up the Access Level
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