A burner
assembly including a housing having an air inlet and a burner end, a motor, and an
impeller mounted in the housing. The
impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing. The burner
assembly also includes at least one pre-mix gas injection
nozzle mounted in the housing. Each of the at least one pre-mix gas injection
nozzle has at least one orifice adapted to direct gaseous fuel into the housing. The burner
assembly further includes a spin vane comprising at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end. The burner assembly still further includes a flattening screen located in the housing downstream from the
impeller and an igniter mounted in the burner end of the housing. The igniter is adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main
flame.