A.O. Smith XB-1000 Instruction Manual page 56

FIGURE 62. SAFETY PARAMETER CONFIRMATION
Press the Yes button to confirm each safety parameter block. If
the No button is selected, the safety parameter block remains
unconfirmed and the Configuration menu page is displayed. The
control remains in an unconfigured state in this case.
After all safety parameter blocks have been confirmed, the
installer is asked to press and hold the Reset button on the
Burner Control to complete the safety verification session (see
Figure 63).
FIGURE 63. SAFETY PARAMETER RESET
When the Reset button is pressed and held for 3 seconds the
confirmed safety parameters are saved in the control. The
above Reset dialog box automatically closes when this step is
completed.
If this step is not performed, the control remains in a safety lockout
state until the installer resolves the unverified safety parameters.
FAULT/ALARM HANDLING
Each Burner Control reports to the OI display when a safety
lockout or an Alert occurs.
Safety lockouts are indicated on each configuration page as an
alarm bell symbol. At the status page (for S7999B), the History
button turns red. If the S7999B is displaying the system status
icons, the control in alarm will turn red.
The lockout history can be displayed by pressing on the History
button. The state information about each lockout is displayed
along with the date/time that the lockout occurred (refer to Table
21). Current date/time stamp is a display setup feature.
Note: In the event of a power interruption, the date/time must be
reset. The OI Display does NOT have a backup means.
TABLE 21. BURNER CONTROL LOCKOUT HISTORY
DATA
Lockout time
Fault Code
Annunciator first out
Description
Burner Lockout/Hold
Burner control state
Sequence time
Cycle
Run Hours
I/O
Annunciator 1-8 states
Fault data
An alert log can be displayed for each control by pressing the Alert
button on the bottom of the history status page. A description of
the alert is displayed along with the time when the alert occurred
(refer to Table 22).
TABLE 22. BURNER CONTROL ALERT LOG
DATA
Alert Line
Alert Code
Description
HISTORY BUTTON
The History button on the Home page serves not only as a
button, but also displays Burner Control lockouts, holds, and
alerts as they occur. The History button can be selected at any
time, regardless of which type of information is displayed, to view
history information. Pressing the History button displays a dialog
box (see Figure 64 on Page 57) that allows the user to select
the type of history to view. The user can also silence an audible
alarm generated by the control during a lockout or alert by alarm
condition.
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COMMENT
Set by display
Unique code defining which
lockout occurred.
First interlock in limit string
results in a shutdown.
Fault description
Source/reason for lockout/
hold
Burner control state timer at
time of fault
Burner control cycle
Burner control hours
All digital I/O status at time of
fault
All annunciator I/O status at
time of fault
Fault dependent data
COMMENT
Set by display
Unique Code defining which
fault occured.
Alert description