Burner Design; Operating Principle - VENMA COMFORT Series Operating & Maintenance Manual

2. Burner design

The VENMA burner comprises steel components and electrical parts. The combustion
chamber and the grate of the burner are made of heat-resistant stainless steel. The steel
material has been tested for resistance at temperatures above 1,000°C. The fuel feeder duct
is made from galvanized black steel for corrosion protection throughout the operating life.
The design prevents overheating of the burner electrical components for maximum service
life and reliability.
Fuel charging
hopper with a fire
damper
Power input
receptacle
Fuel charging
duct
Fuel feeder sensor
Grate
Combustion chamber

3. Operating principle

The burner starts operating by firing up, followed by sustained combustion of fuel.
The operation ends by quenching the fire and cleaning of the burner.
The external screw fuel feeder handles the fuel from the bunker to the burner.
The first firing-up of a brand-new burner must be started manually; each next firing
up process will be managed automatically by the control unit following the user-defined
settings.
Before each firing-up, the burner is blown through to clean the combustion chamber of any
residues left from prior quenching. Next, a fuel pre-charge is fed, meanwhile the igniter
P E L L E T B U R N E R S
Base plate
Igniter
Positive-pressure
chamber
3
Internal fuel feeder
Flame sensor
Inner screw
Outer casing
Ash removal system
Air fan