Abstract: The invention relates to a device and method for dispensing a heated fluid and an external heating device. The device comprises a supply of fluid, a discharge connected to the supply for drawing off heated fluid, a feed for cold fluid connected to the supply, and the heating device. The heating device for heating fluid comprises a suction conduit connected to the supply and provided with a pump means, a heat exchanger with heat source arranged downstream of the suction conduit, a pressure conduit for heated fluid debouching in the supply, at least one temperature detecting means for measuring the temperature of fluid, and a control coupled to the temperature detecting means for controlling the pump means and/or heat source. The invention is characterized in that an outlet of the feed and an inlet of the suction conduit are arranged in the vicinity of each other in the supply.

Abstract: A heating appliance has a burner of the type having full premixing and forced draught and a mixing chamber to which an air supply line and a fuel supply are connected. The mixing chamber has a burner plate which is provided with apertures and which adjoins a combustion chamber in which a heat exchanger is disposed some distance from the burner plate and is passed through by the medium to be heated. A flue is connected to the combustion chamber. The effective heat transfer of the flue gases to the heat exchanger is varied depending on the load on the heating appliance.

Abstract: Regulating device for a central heating plant containing a hot water supply, comprising a boiler for heating a heating medium, a pipe for feeding the heating medium to space heating elements, a distribution device which is accommodated in the feed pipe and has a connection to a flow-through heat exchanger which is also connected to a return pipe from the space heating elements to the boiler. A pipe for tap water being provided in the flow-through heat exchanger and said flow-through heat exchanger being provided with a thermostat which operates the distribution device in order to change from circulation through the space heating elements to circulation through the flow-through heat exchanger and vice versa. The thermostat being adjustable to permit setting of the minimum temperature in the flow-through heat exchanger at which the distribution device switches over from space heating to circulation through the flow-through heat exchanger.