Various embodiments include a combustion apparatus comprising: a burner; a supply channel in fluid communication with the burner; an actuator affecting a supply of a fluid through the supply channel; and a control facility communicatively coupled to the actuator. The control facility is configured to: generate a first change signal from a first end value and to send the first change signal to the actuator; and generate a second change signal from a second end value and to send the second change signal to the actuator. The actuator comprises a processing unit configured to: receive the first and the second change signal; determine a first change speed with the aid of the processing unit, based on the first and the second change signal; and begin a first change of a speed or of a position of the actuator using the first change speed.

A fluid heating system is disclosed. The fluid heating system may include a first valve and a second valve configured to selectively control a supply of a first fuel source and second fuel source respectively. The fluid heating system may further include an air inlet configured to receive ambient air in the fluid heating system. The fluid heating system may further include a controller configured to determine whether the fluid heating system is using the first fuel source and/or the second fuel source. The controller may be further configured to determine an optimal opening area of an air inlet of the fluid heating system based on the determination of whether the fluid heating system is using the first fuel source and/or the second fuel source, and cause to adjust an opening area of the air inlet based on the optimal opening area.

This application relates to a method for controlling the combustion in furnace systems, wherein an oxygen coefficient is determined from the temperature in a combustion chamber area and/or in the waste-gas flues of the furnace system and on the basis of an energy balance of the combustion process in the furnace system, the combustion air and the waste gas, and said oxygen coefficient is used to control the combustion material flows and therefore the thermal output and also the combustion quality. The invention relates to a device for feeding combustion air in the furnace system, which device has a chamber, which on a first side has a main duct for feeding ambient air and/or air from the chimney system and on a second side has a pane-washing air duct and a secondary-air duct, both the pane-washing air duct and the secondary-air duct.

Various embodiments include a method for regulating a burner appliance comprising a combustion chamber, an air supply duct with an actuator to adjust the air supply, and a fuel supply duct with a fuel actuator to adjust the fuel supply. The method comprises: determining the value of the air supply V L; determining the value of an air ratio ; providing an individual scalar fuel parameter h; calculating the power output P_ist of the appliance based on the air supply V L, the air ratio , and the individual scalar fuel parameter h using P_ist=h/.Math.V L; and regulating the burner appliance with the fuel actuator and the air actuator until the actual value reaches the target value.

A system for measuring position of a throttle is provided, the system comprising a throttle, arranged to adjust the flow of a gas; a stepper motor connected to the throttle by a connecting member (204), the stepper motor being arranged to move the connecting member and the throttle; a first member (202), arranged to be movable together with connecting member; a second member (201) arranged such that the movement of the of the first member relative to the second member changes an electrical parameter representative of the position and/or movement of the throttle.

A device for controlling a fuel-oxidizer mixture for a premix gas burner includes: an intake duct, including an inlet, a mixing zone, and a delivery outlet; an injection duct; a gas regulating valve, located along the injection duct; a fan, located in the intake duct to generate therein a flow of the oxidizer fluid or of the mixture; a control unit, configured for generating drive signals; a sensor unit, configured to detect a first differential pressure, between a first detecting section, located in the intake duct upstream of the mixing zone in the direction of inflow and a second detecting section, located in the intake duct downstream of the mixing zone in the direction of inflow, and configured to detect a second differential pressure, between the first detecting section and a third detecting section, located in the injection duct between the gas regulating valve and the mixing zone.

A burner body for a gas burner with complete-premixing and modulable power, including: one inlet opening for the inflow of an air and fuel gas mixture; a plurality n of outlet openings on the surface of said burner body, adapted to allow the outflow of the air and fuel gas mixture; at least one movable element for varying the number of the outlet openings in communication with the inlet opening; a plurality n of chambers delimited by fixed partition walls inside the burner body and by portions of the outer wall thereof, each of the chambers being in communication with the inlet opening and in communication with a part of the plurality n of outlet openings; n1 movable elements positioned upstream of n1 chambers and downstream of the inlet opening, adapted to open and close the communication between the inlet opening and the plurality n of outlet openings.