How can I calculate the length down rod required?
For safety reasons the fan blades should not be lower than 2300mm above floor level. The fan blades can be higher than 2300mm.
The formula for calculating down rod length is:
Floor to ceiling height minus 2300mm (min blade height regulation from floor) minus 110mm (motor Measurement) minus 60mm(hanging shackle) equals Down rod length.
If you require the fan to be higher than 2300mm above the floor substitute the 2300mm in the formula with the desired height: Floor to ceiling height minus 3000mm(desired height from floor) minus 110mm minus 60mm equals Down Rod length.