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Is there any kind of gate or damper between the bulk hopper auger and the boiler hopper? If there was burn-back from the boiler hopper for some reason, what would prevent the fire from following the pellets back to the bulk hopper? Is there a deluge tank in there somewhere?
Is there any kind of gate or damper between the bulk hopper auger and the boiler hopper? If there was burn-back from the boiler hopper for some reason, what would prevent the fire from following the pellets back to the bulk hopper? Is there a deluge tank in there somewhere?
From the pic of the auger feeder it looks like the drop tube from the auger to the boiler is a flex tube. If the boiler hopper ever caught fire, that flex tube would probably melt before it could start a burn-back down the auger tube. Many pellet boilers have a deluge system as a secondary safety system, after the air-tight consideration. Belt and suspenders.