HEATING APPARATUS COMPRISING COMBUSTIBLE GAS BURNER

A combustible gas heating apparatus is described, in particular an apparatus for heating water, comprising: - a main burner (2) arranged in a combustion chamber (3) of the apparatus, - a pilot burner (4) suitable for generating a pilot flame for igniting the main burner (2), - a valve group (5) comprising a main valve (6) arranged on a main duct (7) for supplying the combustible gas to the main burner, and a pilot valve (8) arranged on said main duct (7), upstream of the main valve, for supplying gas to the pilot burner (4), a pilot duct (9) branching off from a portion (7a) of the main duct (7) between the pilot and main valves in order to feed the gas to the pilot burner, - a system for controlling the supply of gas to the main and pilot burners, including an electronic control unit (10) that is operatively associated with the main and pilot valves, - a thermal safety device (12) which can be activated in the presence of inflammable vapours in the vicinity of the apparatus and is designed to safely extinguish the main burner (2) when a predetermined temperature threshold in the combustion chamber (3) has been exceeded, - the pilot burner (4) being intended as a continuous pilot burner having a permanent flame, - the pilot valve (8) and the main valve (6) being electrically-operated valves, - an auxiliary buffer battery (18) being intended to power the electronic control unit if there is a temporary absence of a mains power supply, such that at least the pilot valve (8) is powered and operated, by means of said control unit (10), in order to ensure that the pilot flame in the pilot burner (4) is maintained during the temporary absence of a mains power supply. La présente invention concerne un appareil de chauffage à gaz combustible, en particulier un appareil de chauffage d'eau, comprenant : - un brûleur principal (2) agencé dans une chambre de combustion (3) de l'appareil, - un brûleur pilote (4) conçu pour générer une flamme pilote pour allumer le brûleur principal (2), - un groupe de vannes (5) comprenant une vanne principale (6) disposée sur un conduit principal (7) pour fournir le gaz combustible au brûleur principal, et une vanne pilote (8) disposée sur ledit conduit principal (7), en amont de la vanne principale, pour fournir du gaz au brûleur pilote (4), un conduit pilote (9) se ramifiant à partir d'une partie (7a) du conduit principal (7) entre les vannes pilote et principale pour acheminer le gaz vers le brûleur pilote, - un système de commande