PV 180a
Working principle
Testing
Before every startup the burner tests itself. At testing time fan is turned on at maximum power. If its
speed doesn´t reach 30 rps, “fan error”will occure on display. Battery loading is turned off and
feeder is turned on. If battery voltage is lower then 12V, “Battery low” error will occure. By testing
the feeder has to make 1 full turn in 8 seconds, if it fails to do it, “feeder error” will occure.
Cleaning
To clean the burner, parameter 48 has to be turned ON. Before every working cycle, burner grate
will be cleaned by pulling the lower grate under the upper grate and pushing away the ash by moving
back. If the grate is stucked, it will move back and try again. After 1 minute trying and failing to move
back to its right position, “grate error” will occure.
Loading
In the loading cycle, internal feeder loads correct amount of fuel into burning chamber needed for
ignition. Loaded fuel amount is measured by counting internal feeder rotations. Loading is correctly
ended when feeder has made 20 half-rotations (or as set in the par24). Internal feeder working
depends on fuel level sensor:
•
The feeder is started when level sensor recognizes fuel in burner for more than 1s,
•
The feeder stops when feeder makes 1.5 rotations without fuel in burner.
External auger is holding permanent fuel level in the feeder tube all loading time depending on level
sensor:
•
The auger is started when level sensor does not recognize fuel in burner more than 1s.
•
The auger is stopped when level sensor recognizes fuel in burner more than 5s.
Maximum loading time is limited with 5 minutes in normal working conditions and 20 minutes after
manual start.
•
Igniter is preheated in the end of loading cycle. When internal auger has made 10 half
-rotations (par24 - 12 ) the igniter is turned on for preheating. If the igniter is turned on more than 1
minute at loading time, the igniter will be turned off.
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