Method for determining an air ratio in a burner for a fuel cell heater, a fuel cell heater

摘要

A method for determining an air ratio in a burner for a fuel cell heater having an ionization sensor in the range of the flame and which is fed with two different gases for combustion, one of said gases being obtained from a gas treatment, wherein a measurement signal of the ionization sensor is converted into an actual value for the air ratio depending on one or more variable of states of the gas treatment.