Stack Fans for Gas Rack Ovens

Use a stack fan for better combustion

When using gas burners, stack fans are required. The stack gases from gas burners will have larger volume than those for oil burners making it harder for the stack gas to pass the first section of the heat exchanger. When a stack fan is used in connection with gas burners higher efficiency, longer life and lower wear and tear will be achieved. If the 4-6 mm water column negative pressure that is required in the heat exchanger combustion chamber is not reached, bad combustion and increasing soot in the burner will cause the burner not working at full effect. Air conditioning as well as external wind conditions could create a negative pressure in the bakery. If a stack fan is not used under these conditions the hot stack gases will be drawn backwards through the stack as well as heat exchanger and burner when the burner fan is brought to a stop. This may damage the burner.