Patent ID: 7422427

Claim:
A burner installation comprising: a combustion chamber having a furnace front wall and a side wall; a plurality of heat transfer pipes, through which a heat transfer medium flows, coupled to or forming the side wall; a burner assembly coupled to the furnace front wall, the burner assembly comprising: a tubular member that has an open distal end located inside the combustion chamber and a portion proximate the other end attached to the furnace front wall; a plurality of combustion air ports extending into the tubular member from the other end of the tubular member and coupled to a combustion air source; a plurality of fuel gas discharge nozzles extending into the tubular member from the other end of the tubular member and coupled to a fuel source; a plurality of furnace gas openings formed in the tubular member which are spaced apart from the distal end, are arranged about the tubular member's periphery and are located relative to the combustion chamber so that furnace gases flow past some of the heat transfer pipes before they reach the furnace gas openings.