A.O. Smith XB-1000, User Manual

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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 6).
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 6. bUrNer CoNTrol loCKoUT hiSTorY
DATA CoMMeNT
Lockout time Set by display
Fault Code Unique code defining which
lockout occurred.
Annunciator first out First interlock in limit string
results in a shutdown.
Description Fault description
Burner Lockout/Hold Source/reason for lockout/
hold
Burner control state
Sequence time
Burner control state timer at
time of fault
Cycle Burner control cycle
Run Hours Burner control hours
I/O All digital I/O status at time of
fault
Annunciator 1-8 states All annunciator I/O status at
time of fault
Fault data Fault dependent 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 7).
TAble 7. bUrNer CoNTrol AlerT loG
DATA CoMMeNT
Alert Line Set by display
Alert Code Unique Code defining which
fault occured.
Description Alert 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 25) 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.
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 31).
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.
FiGUre 30. SAFeTY pArAMeTer CoNFirMATioN
FiGUre 31. SAFeTY pArAMeTer reSeT