Curved inshot burner and method for vent-within-casing furnace

A heating apparatus for delivering heated air to an enclosure, said heating apparatus comprising:

• a casing with at least two compartments separated by a panel;
• an inshot burner located within a first compartment of said casing for burning a combustible fuel-air mixture delivered thereto, said inshot burner having an arcuate profile and producing products of combustion flowing axially therefrom;
• a heat exchanger located within a second compartment of said casing and having an opposed inlet and outlet, said inlet being in fluid communication with said inshot burner through an aperture in said panel, said heat exchanger receiving said products of combustion;
• a blower located within said casing for directing a flow of air across said heat exchanger into the enclosure, whereby heat is transferred from said products of combustion to said air;
• and,
• exhaust means in fluid communication with said outlet, said exhaust means including a vent for exhausting the products of combustion from said casing, said vent contained within said casing;
• whereby, a clear space is provided for said vent to be located between said burner and a wall of the casing.