A.O. Smith BFM - 120, BFM - 100 manual Concentric wall flue terminal BFM100

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A.O. Smith prescribes the use of a concentric roof or wall flue terminal, exclusively of a type approved for the appliance. Use of an incorrect roof or wall flue terminal can cause the installation to malfunction.

You must also fulfil the following requirements:

•The maximum permissible length of chimney pipe (A+B+C) is 7 metres.

•The maximum permissible number of 45° or 90° bends is 2.

•If you are using a horizontal pipe, you must mount it with a minimum run-off of 5 mm per running metre of pipe towards the appliance!

•The transition piece to convert the air supply and chimney flue from parallel to concentric must be installed immediately before the wall or roof flue terminal.

•The intake duct of the air supply must be approximately the same as the chimney flue.

•Make sure that the chimney flue discharges into an area approved for this type of appliance.

See the figures. Wall flue terminal (3.9.8 "Concentric wall flue terminal BFM100, 120") and Roof flue terminal (3.9.10 "Concentric roof flue terminal BFM 100, 120") for examples of installation.

3.9.8Concentric wall flue terminal BFM100, 120

Wall flue terminal

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B

A

IMD-0226 R1

Instruction manual BFM 31