Dunkirk XEB-4 Installation, Operation & Maintenance Manual page 39

• Recheck ignition sequence as follows.
— Reconnect main valve wire.
— Adjust thermostat above room temperature.
— Verify ignition sequence at burner.
— If spark does not stop after pilot lights, replace
module.
— If main burner does not light or if main burner lights
and system locks out, check module, ground wire
and gas control as described in Operation Error Codes
table. See Table 10.
APPENDIX A - CONTROL MODULE
Figure 19 - Pilot Flame
Correct Pilot Flame: 3/8 to 1/2 inch in flame.
See Figure 15, Page 29.
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PN 240013099 Rev. A [08/15/2020]