Normal Shutdown
1.
When the operating control circuit (L1-3) opens, the main fuel valve is de-energized. The firing
rate motor is driven to the low purge position (10-12 circuit made).
2.
Following a 15 second post purge, the burner/blower motor is de-energized.
POST PURGE
CYCLE COMPLETE
3.
The burner is now off and the BLV512 will display
STANDBY
L1-3 OPEN
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0:05
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