What does FDF stand for?

Forced Draft Fan

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Field Displacement Filter Financial Detail File (claims) Finished Dosage Form (pharmaceuticals) Finnish Defence Forces Fixture Design and Fabrication Flame Deflector Firex Flight Data File Flight Dynamics Facility Flush Door Fastener Food and Drink Federation (UK)		Formerly Declared Facility Forms Data Format (Adobe Acrobat) Fort De France, Martinique - Fort De France (Airport Code) Forward-Deployed Forces Foundation Degree Forward Free Data Format Frivillig Drenge- og Pigeforbund (Denmark) Front Démocratique des Francophones (French: French Democratic Front; Belgium) Fundamentally Different Factor(s) Federal Department of Foreign Affairs (Switzerland)

Samples in periodicals archive:

A condensing gas furnace, with two or three-inch plastic pipe vents and forced draft fan is about 90% efficient.

How Many BTU?s Does Your Furnace Give You from Your Fuel Source?

It deals primarily with water tube boilers with induced draft and forced draft fans or boilers containing only forced draft fans.

Boiler control systems engineering

Under the turnkey contract, B&W will supply one FM boiler, burner management system and combustion controls, burner assembly, an economizer with associated duct work, support steel, stack, condensing heat exchanger and attemperator, and a forced draft fan equipped with a Variable Frequency Drive system.

Babcock & Wilcox Wins U.S. $2 Million Package Boiler Contract