This dilution fan is part of a range which which is suitable for commercial gas boilers with input ratings from 30kW to 650kW (2,200Btu). The GBDF3 unit is suitable for commercial gas boilers which have a boiler input rating of 81kW to 160kW. Each unit includes a robust output flange, with mounting holes, pressure switch actuated fail-safe system and flying lead with two piece, snap-in plug and socket.
The Airflow Developments Ltd flue dilution range consists of five sizes, each size is available in a GBDF or SSDF version. GBDF fans are for atmospheric commercial type boilers and water heaters, circa 75% efficient. SSDF fans have enhanced corrosion resistance by using Aisi 316 stainless steel fan casings. These are usually used on installations where regulations / specifications call for stainless steel. They are also used where high efficient boilers such as a modular design type are use. Condensation should not be allowed to collect in the fan casing.
For more information on where flue dilution fans are used and why, see Airflow Developments Ltd. Flue Gas Dilution Fan Data Sheet.