Even if Sparxs burners have been tested for their natural combustion quality (poor combustion also creates unpleasant odor) they still incorporate a built-in CO2 detector. This CO2 detector activates an emergency shutdown in case of oxygen depletion. Why do we need it?
Ethanol combustion products are H2O & CO2( carbon dioxide is what we normally exhale) . It could produce CO (carbon monoxide) which is odorless and dangerous in case of:
Bad combustion due to poor burner or fireplace design which contribute to inadequate airflow
Inadequate oxygen for proper combustion (e.g. small confined room)
Installation of a CO detector in the fireplace is a possible solution. However, at this time, independent laboratory testing shows that CO detectors are expensive, power hungry and more importantly unreliable over time
In the past , petrol heaters were confronted with the same problem and therefore the same solution has been made compulsory by the French norm authority:
Make sure that “ (CO)N content in steady-state combustion products shall not exceed 0.01% namely 100 ppm” (For this reason the design of "Kleenex boxes” shaped burners are being abandoned
Anticipate oxygen depletion in the room by CO2 continual measuring . The appliance is automatically shutdown if and when CO2 levels reach 0.8%