PRE-MIX BURNER ASSEMBLY FOR LOW NOx EMISSION FURNACE

A burner assembly comprising:

• a burner surface carried by a burner plate, the burner surface extending outward from a front side of the burner surface;
• a housing coupled to the burner plate on a side opposite the front side of the burner plate;
• a gasket disposed between the burner and the housing, the gasket being formed of a single layer of material;
• and
• an igniter positioned adjacent to the burner surface.

A furnace assembly comprising:

• an intake manifold fluidly coupled to a supply line;
• a burner assembly fluidly coupled to the intake manifold, the burner assembly comprising:
• a burner surface carried by a burner, the burner surface extending outward from a front side of the burner;
• a housing coupled to the burner on a side opposite the front side of the burner;
• a gasket disposed between the burner plate and the housing;
• a thermally anisotropic protective covering located on the front side of the burner and surrounding a perimeter of the burner surface, wherein a thermal conductivity across a length and across a width of the thermally anisotropic protective covering is higher than a thermal conductivity across a thickness of the thermally anisotropic protective covering;
• an igniter positioned adjacent to the burner surface;
• a burner box assembly thermally exposed to the burner assembly;
• and
• a heat-exchange tube fluidly coupled to the burner box assembly.