Installation Guide

Page 6

2. Your Safety

NOTE: Although less than 5 to 6 metres will increase extraction power this will result in higher noise

level. Maximum duct length 15 metres. Check with supplier if longer duct length is required. Do not

reduce the duct size at any time and avoid sharp bends.

Minimum Mounting Height

This fan unit is intended for mounting at a minimum height of 2.1 metres (measured to the lower part

of the fan impeller) above a oor or the ground.

Avoidance of Back Flow

Care should be taken to avoid the back ow of gases into the room from the open ue of gas or

other open re appliances.

Safety of Children

This fan is not intended for use by young children or inrm persons without supervision.

Replacement of supply cord

If the supply cord is damaged, it must be replaced by a service agent or suitably qualied person in

order to avoid a hazard.

Why Flexi-duct

Some internet sites strongly recommend the use of rigid ducting over fully exible ducting. This may

well be the case with conventional rangehoods with internal motor rangehood but not with external

motor rangehood.

Schweigen’s unique Isodrive system works in the opposite way to conventional rangehoods, pulling

air through the hood and acoustically matched ducting, producing almost silent high volume ow.

The use of a complete rigid or semi-rigid ducting system will allow an organ piping effect to occur;

like a didgeridoo where a noise is produced at one end of a hollow rigid pipe and the noise is

amplied out the other.

The Isodrive system places the noise outside the house and it needs to be kept there.

WARNING: Installation without the use of at least the minimum recommended length of acoustically

matched exi-ducting in the system will void performance expectations. Any installation problem

must be reported to Schweigen. Call outs relating to incorrect installation will result in a service fee

direct to the customer. Schweigen takes no responsibility for problems caused by faulty installation,

this may void warranty. A preferred installer list can be obtained from Schweigen website