PB-1525 Wood Pellet Burner System: Installation and Operation Manual
Rev 1.0, OCTOBER 2011
Page 31 of 67
Firing 14
T 237 328°F F _
Starts: 489
Disa
Figure 3.5: PB-1525 Burner Controller in the Firing State
As depicted above, the System State is “Firing”. The unit is now firing at its
set firing rate. No new indicators have been displayed. If the system fails
to maintain a healthy flame during the Firing State the system will trigger
the Alarm State and a lost flame error will be displayed. The system can
be forced into the Shutting Down State by pressing and holding the
Disable button for five seconds.
Shutting Down
The Shutting Down state indicates the system has detected the loss of the
thermostat input and is entering the shut down mode. In the Shutting
Down state, the unit is running the combustion blower at high speed and
monitoring the flame sensor value; the system will no longer feed pellets
into the burn chamber. Once the system has met the shutting down
criteria the system will enter the Purging State. Figure 3.6 below illustrates
the controller in the Shutting Down state.
