This combustion fan is found on the larger models of fan forced heaters. Lack of air to the inside of the combustion will cause your gas pool heater to not ignite. Every year when your gas pool heater should be serviced, ensure that your licensed gas plumber is setting up your heater with a combustion analyser to ensure a safe gas to air mixture.
Combustion Fan Viron 350/450, ICI400 and HiNRG
