5 Installation Which size for your home? The table below gives an indication what diameter fan is needed for a given room size. The sizes are for square rooms with a ceiling height of between 2.30 m and 3.30 m. In higher rooms, choose the next largest fan diameter. Ultraslim ceiling fans move less air than downrod fans. Very often we are asked: isn’t 132 cm very big? Sure, if you imagine a disc with a diameter of 132 cm on your ceiling, then that’s big indeed. But please remember that the fan’s motor measures only 30 cm in diameter. Depending on the model, fans may have 3, 4 or 5 blades that are much narrower. This means that the device looks much more dainty than a disc of the same diameter. Room size Fan diameter up to 8 m2 75 cm < 10 m2 90 cm 8 - 12 m2 103 cm 10 - 16 m2 120 cm 12 - 25 m2 132 cm 18 - 32 m2 140 cm 25 - 45 m2 160 cm 30 - 50 m2 >180 cm Downrods A ceiling fan with the standard short downrod is perfect for ceiling heights of up to about 2.6 m. Up to a ceiling height of about 4.0 m, it is advisable to use a 60 cm downrod. Alternatively, a 120 cm downrod can be used. For structural reasons and where necessary our downrods can be slightly shortened to any intermediate size. Ceiling height Downrod up to 2,4 m low profile up to 2,6 m standard* up to 3,0 m 50 cm up to 4,0 m 60 cm up to 5,0 m 100 cm > 5,0 m 120 cm * comes with ceiling fan 2, 3, 4 or 5 blades? The number of blades and, in particular, the total blade area determine the volumetric airflow of a fan. Equally important is the blade profile. An optimally profiled fan blade, i.e. one that is twisted, extracts more air than a smooth blade. Thus, for example, a NORDIK-range ceiling fan with three profiled metal blades moves more air than a decorative wooden model with five straight blades. Hence, in all our decorative ceiling fans, the blade attack angle is optimised to the motor’s power and speed to ensure the best possible result with good energy efficiency and barely perceptible noise for use in residential and office spaces. Upon request, e.g. for aesthetic reasons, some models (e.g. the ROYAL) can also be equipped with two or four blades. Decorative natural blades New to our range are decorative blades made of natural materials that have been handcrafted, artfully woven rattan sticks, stained or lacquered bamboo stripes or dried palm leaves stretched on a frame create a special atmosphere and are the highlight of any room. These blades can be combined with many of our ceiling fans, depends on your individual needs and preferences. Please note that these blades are handmade. Small differences, such as divergence in colour among the set of blades, are an indicator of the crafted product. The uneven nature of the upper surface of the blades causes an amount of turbulence, reducing the air flow and effective range of each fan. If you need very high air speed, please choose standard plain wooden blades. Installation In principle, a ceiling fan should be mounted on a solid, vibration-free surface. For suspended ceilings (wood or plasterboard ceilings), make sure that the fan is fixed to a beam, joist or similar. Any ceiling resonance can give rise to considerable noise. Make sure that any objects (lamps, cables, etc.) cannot be struck by the blades. Please use only the mounting hardware we supply for mounting our fans. On the product pages we describe how to mount each and every type of fan. You only need are the appropriate screws for your ceiling with the corresponding wall plugs. If you are unsure whether your ceiling will bear the weight of a fan, please consult a professional, such as your electrician, for advice. “Ultraslim”? Nowadays many rooms have very low ceilings. To help enjoy the convenience of a ceiling fan in such rooms, we offer “ultraslim” low profile models in our porduct range which have a very low overall height. In assessing the users’ safety with ceiling fans, the distance from the floor to the lower edge of the blade is essential. These models are equipped with blades that are very close to the ceiling. However, because of the narrow airflow gap between the blades and the ceiling and because the housing is enclosed up to the ceiling, there is an increased resistance to the delivered airflow, thus reducing the quantity of air moved and its effective range. For this reason, we have modified the suspension of many of our fans so that they can be mounted without a downrod. For example the TITANIUM model (page 25) measures only 190 mm from the ceiling to the bottom edge of the blades - and has only a slightly reduction in the nominal airflow. Angle Ceiling fan Ø 75 103 132 152 180 15° Std. Std. 12 13 18 20° Std. 15 18 21 28 25° 14 22 27 30 38 30° 20 28 35 40 50 35° 25 36 45 50 62 40° 32 45 55 62 75 45° 40 55 68 75 95 Sloping ceiling A B A: Swivel ball joints level s ceiling pitch B: On-site construction for installation It depends on the pitch of the ceiling, if a longer downrod is needed. (length cm see table below). If r idge beam is not used for installation, from a pitch of more than 20° an additional, on-site construction made of wood or metal is needed (i.e. wedge). CasaFan rods can be shortened to any length in between.
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