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Lennox GWM-050IE User Manual

Lennox GWM-050IE
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74
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 ame is detected at end of pre-spark
period (Ignit_0) than lockout will occur.
Re-ignition
If at end of safety period no 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 3 after which lockout
occurs.
Intermittent
Operation
Boiler can be ring continuously for 24
hours. Burner switched off and restart
sequence follows.
Flame out too
late
If 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

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Lennox GWM-050IE Specifications

General IconGeneral
BrandLennox
ModelGWM-050IE
CategoryBoiler
LanguageEnglish

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