Dual fuel heating system and air shutter

摘要

A dual fuel heating system can be used in a gas appliance. The system can have an air shutter to regulate an amount of air that can mix with the fuel for combustion. The air shutter can be configured to have different positions depending on the type of fuel to be used.

主权项

1. An apparatus for heating with one of a first fuel and second fuel different than the first fuel comprising:
a sealed combustion chamber; an air shutter within the combustion chamber, said air shutter at least partially surrounding a mixing chamber configured to mix air with either the first fuel or the second fuel; an air shutter control outside the combustion chamber; wherein the air shutter control is coupled to the air shutter and controls the amount of air flow through the air shutter and the type of gas to flow to the combustion chamber, the air shutter control having a first position wherein the air shutter is opened to a first fuel air flow position and a second position wherein the air shutter is opened to a second fuel air flow position, the air shutter further configured for fine tuning adjustment to allow more or less air flow into the mixing chamber from the first position and to allow more or less air flow into the mixing chamber from the second position; and further comprising an outlet valve controlling a flow of fuel to either a first ODS nozzle and first burner nozzle or a second ODS nozzle and second burner nozzle, wherein the first ODS nozzle and first burner nozzle are configured for the first fuel and the second ODS nozzle and second burner nozzle are configured for the second fuel.