Airflow GBDF4 flue dilution fan.
A new range of dilution fans which allow ﬂexible siting of gas boilers rated between 30 kW and 650 kW input. Upgraded to include a pressure switch fail safe system and an easy to connect mains ﬂying lead with snap-in plug and socket, the Airﬂow range of ﬂue dilution fans is available in 5 sizes to satisfy the dilution needs of industrial and commercial boilers. Each size is available in standard form (GBDF series) for atmospheric boilers and water heaters of circa 75% efﬁciency.
The Airflow GBDF range of flue dilution fans are suitable for industrial and commercial atmospheric gas fired boilers and water heaters. Regulations require that if the products of combustion are dispersed at a low level, then the CO2 content must be 1% or below. The Airflow flue dilution fans achieve this by introducing fresh air into the boilers discharge flue duct and diluting the flue gases. With the correct selection of fan for the boiler rating and the recommended flue duct layout the 1% CO2 level will be met.
• Built in self proving pressure safety switch (offering a safety interlock with the appliance in instances of flue blockage or fan failure)
• Simple electrical connections, designed with the installer in mind.
• Eliminates the need for unsightly external flues; and the need for expensive installation or refurbishment of internal flues.
• Efficient and quiet centrifugal fans capable of overcoming system resistance in flue duct runs. Please contact us for advice on specifying the correct size fan for your application.
Enhanced corrosion resistance versions (SSDF series) with stainless steel fan cases are also available for installation where regulations or the speciﬁcation calls for stainless steel flue, and, when higher efﬁciency boilers such as modular designs are likely to produce condensation. Condensation should not be allowed to collect in the fan casing.