WHISPAIR ducting is designed to ensure optimum performance for your rangehood.
Please follow the installation instructions carefully.
Every WHISPAIR rangehood must be ducted externally or cavity mounted KLEENAIR 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 KLEENAIR 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 200mm in diameter or an approximate area of 31,400mm
2
. Do not reduce the duct size at any time and avoid
sharp bends. If the duct run is longer than six (6) 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 six (6) metres.
Ensure that all ducting is correctly fitted and sealed with pipe clips, duct tape or silicone to ensure that fumes don’t escape
prior to reaching the KLEENAIR unit.
The WHISPAIR extraction calculations are based upon a 50pa change of head of pressure loss and are used to factor the
variance of air flow resistance through the ducting. 50pa is equivalent to approximately 4 metres (the recommended length) of
flexi ducting with one gentle bend, which is above and beyond the industry standard of one straight metre of ducting.
The KLEENAIR LITE offers a powerful 765 cubic meters per hour (213 litres per second) of air movement.
The KLEENAIR PRO offers 1140 cubic meters per hour (317 litres per second) whilst for serious users the
KLEENAIR PRO PLUS boasts a market leading 2010 cubic meters per hour (558 litres per second).
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.
Ducting & Extraction Levels
WHISPAIR ducting is designed to ensure optimum performance for your rangehood. Please follow the installation
instructions carefully.
Every WHISPAIR rangehood must be ducted to the externally or cavity mounted KLEENAIR 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 KLEENAIR 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 200mm in diameter or an approximate area of 31,400mm2. Do not reduce the duct
size at any time and avoid sharp bends. If the duct run is longer than six (6) 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 six (6) metres.
Ensure that all ducting is correctly fitted and sealed with pipe clips, duct tape or silicone to ensure that fumes do
not escape prior to reaching the KLEENAIR unit.
The WHISPAIR extraction calculations are based upon a 50pa change of head of pressure loss and are used to
factor the variance of air flow resistance through the ducting. 50pa is equivalent to approximately 4 metres (the
recommended length) of flexi ducting with one gentle bend, which is above and beyond the industry standard
of one straight metre of ducting. The KLEENAIR LITE offers a powerful 765 cubic meters per hour (213 litres per
second) of air movement. The KLEENAIR PRO offers 1140 cubic meters per hour (317 litres per second) whilst
for serious users the KLEENAIR PRO PLUS boasts a market leading 2010 cubic meters per hour (558 litres per second).
To Rangehood Unit
Gentle Bend
In Ducting
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.
6
DUCTING & EXTRACTION LEVELS
