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FUMES DISCHARGE (SIENA F3SN60S1, F3SN90S1 and F3SND90S1 ONLY)
In this version the fumes and vapours are discharged outside through the exhaust pipe.
To this end, the hood outlet fitting must be connected via a pipe, to an external output.
The outlet pipe must have:
• A diameter not less than that of the hood fitting.
• A slight slope downwards (drop) in the horizontal sections to prevent condensation from flowing back into the motor.
• The minimum required number of bends.
• The minimum required length to avoid vibrations and reduce the suction performance of the hood.
DUCTING & EXTRACTION LEVELS - (REMOTE MOTORS ONLY)
The Flexi ducting is designed to ensure optimum performance for your rangehood.
Please follow the installation instructions carefully.
Every FALMEC rangehood must be ducted to the external or in-roof motor unit by the use of non-flammable ducting. The
rangehood must not be ducted into a wall cavity or a ceiling space where a build-up of grease can occur and become a
potential fire risk. Ensure the external outlet on the motor unit unit is not covered and the air flow is not restricted in any way as
this may result in reduced performance.
The duct must at all times have a cross sectional surface area equivalent to the hood outlet. The hood outlet has a circular
cross section of 200 mm in diameter or an approximate area of 31,400 mm². Do not reduce the duct size at any time and avoid
sharp bends. If the duct run is longer than five (5) metres, it may be necessary to enlarge the duct size to ensure optimum
performance. The manufacturer does not guarantee performance when the duct length is greater than five (5) metres.
THE RECOMMENDED DUCT
LENGTH (INSTALLATION
DISTANCE) IS 4 METERS.
THE MINIMUM INSTALLATION
DISTANCE IS 3 METERS.
GENTLE BENDS IN THE
DUCTING ARE RECOMMENDED
AS IT ASSISTS IN MUFFLING
NOISE FROM THE
EXTERNAL FAN UNIT.
To Rangehood Unit
Gentle Bend
In Ducting
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