Abstract: The invention relates to a burner system having a number of premixed burners (2), which each have one or more feed openings and outflow openings for a combustible gas/air mixture. The burner system is provided with means (11) for transferring a flame from one burner to another. By making use of such flame transfer means the burner system can be ignited at one of the burners, wherein the flame then overflows sufficiently-rapidly to the other burners in order to ignite them before a dangerously large quantity of the combustible gas/air mixture has flown out. These flame transfer means can define a flame path between the burners which can for instance be formed by an overflow pipe (12) mutually connecting the burners. The burner system can further be provided with a member (13) directed toward the flame path for the purpose of injecting the combustible gas/air mixture (M) therein. This injection member can be connected via a branch conduit (14) to a mixing chamber (5) in which the gas/air mixture is formed.

Abstract: A heat exchanger for a heating appliance, comprising a channel for conveying a heated gas in a longitudinal direction of said channel and a multitude of fins for conveying a liquid, said fins being provided with an inlet and an outlet, which open in a common plane, wherein the fins are provided on a wall of the channel, extending into said channel, wherein the inlets and outlets of the fins open in the plane of the wall and wherein the heat exchanger further comprises connecting elements for connecting at least one outlet to at least one inlet of separate fins.

Abstract: The invention relates to a burner system having a number of premixed burners (2), which each have one or more feed openings and outflow openings for a combustible gas/air mixture. The burner system is provided with means (11) for transferring a flame from one burner to another. By making use of such flame transfer means the burner system can be ignited at one of the burners, wherein the flame then overflows sufficiently -rapidly to the other burners in order to ignite them before a dangerously large quantity of the combustible gas/air mixture has flown out. These flame transfer means can define a flame path between the burners which can for ijistance be formed by an overflow pipe (12) mutually connecting the burners. The burner system can further be provided with a member (13) directed toward the flame path for the purpose of injecting the combustible gas/air mixture (M) therein. This injection member can be connected via a branch conduit (14) to a mixing chamber (5) in which the gas/air mixture is formed.