76
User Interface Display
Explanation
Installer Menu
Boiler Status
Control module logs successful and failed ignition attempts.
Information accessed in ‘Ignition Attempts’ Screen as shown.
Ignition attempts are stored in non-volatile memory and are
retained in event of power failure.
Figure A-1 Typical Ignition Cycle
Following control features are implemented to ensure safe and
reliable operation of Combustion System:
False Flame
Detection
If
fl
ame is detected at end of pre-spark
period (Ignit_0) than lockout will occur.
Re-ignition
If at end of safety period no
fl
ame detected
control will go to post-purge removing
unburned gas. Re-ignition attempt started
following same cycle. Number of re-ignition
attempts limited to 4 after which lockout
occurs.
Intermittent
Operation
Boiler can be
fi
ring continuously for 24
hours. Burner switched off and restart
sequence follows.
Flame out too
late
If
fl
ame detected after post purge lockout
follows.
Safety relay test
In Safety ON/OFF state correct operation
of safety relay is proved before ignition.
UL3563
High Limit
Temperature
Device
Boiler comes equipped with UL353
approved temperature high limit device.
Gas Valve de-energized when supply
temperature exceeds 203°F lockout
follows.
APPENDIX A - CONTROL MODULE
Содержание DKVLT-050
Страница 47: ...47 13 TROUBLE SHOOTING ...
Страница 51: ...51 13 TROUBLE SHOOTING ...
Страница 53: ...53 13 TROUBLE SHOOTING ...
Страница 62: ...62 Supply Water Temperature Sensor Resistance Chart 13 TROUBLE SHOOTING ...
Страница 64: ...64 14 WIRING DIAGRAM 14 1 Connection Diagram 050 075 100 150 200 MBH ...
Страница 66: ...66 14 WIRING DIAGRAM 14 3 Connection Diagram 299 MBH EXTERNAL PUMP RELAY LIMIT OF 1 AMP PER PUMP SEE SECTION 8 ...
Страница 83: ...83 NOTES ...
Страница 84: ...ECR International Inc 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...