| Fans, when connected to ducting, operate
best when the ducting is installed so that any restrictions to the
flow of air are minimized. Fans can be mounted anywhere along the
duct system but care should be taken as shown below. Also, all fans
make a noise but, with care and attention to detail when installing
them, there is no good reason why the installation should not be successful. |
| Don't |
| On systems with more than one inlet/outlet don't
leave the system unbalanced |
|
 |
| Do |
| Where more than one inlet/outlet is installed
adjust the dampers in the grilles to balance the airflow |
|
| Don't |
| Don’t mount the fan close to inlet or outlet
terminals. |
|
 |
| Do |
| Maximise the distance between the fan and inlet/outlet
terminals to reduce noise at terminals. |
|
| Don't |
| Don’t position grilles above openable windows
or doors. Such positioning causes short-circuiting of the airflow
and does not provide proper ventilation. |
|
 |
| Do |
| Grilles should be positioned to ensure ventilation
air passes across the room providing ventilation to all areas.
Refer to next diagram. |
|
| Don't |
| Don’t restrict the flow of air into the rooms
being ventilated (for both exhaust and air transfer). |
|
 |
| Do |
| It is essential that air is allowed to get into
the rooms being ventilated. This can be done by increasing the
gap under the door or by installing door grilles. Note: It is
impossible to exhaust more air from a room than is allowed to
enter it |
|
| |
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