18
17
135
135
ø 90
ø 70
ø 2.9
900'
55
60
ø112
X
A
WC66000122 - Rev 03
It is strictly forbidden to reproduce this manual, even partially
13
FRESH AIR CONNECTION (IWCi 3-4-5)
• The unit can be connected to an external air duct (17).
• The additional fan motor for the external air inlet must be powered separately
and it must be possible to control it from a bipolar On/Off switch with electric
protection device.
• To avoid operating and noise-related problems, the new
air flow rate must be approximately 10% of the total air flow rate.
- Open the provided hole (18), secure a 70 Ø flange
to the unit and connect the thermally-insulated duct.
- Install a grill, with filter, to the exterior, to stop dust and impurities from
getting drawn in and soiling the units exchanger.
Model
X
IWC 6
220
IWC 8-10
250
IWC 6-8-10
•
The unit can be connected to an outside air inlet conduit.
-
Open the knock-out (A), secure a connection sleeve (not supplied) to the unit
and connect a thermal insulated conduit.
-
On the exterior, install a grille with filter to prevent drawing in dust and debris
which could clog the unit’s exchanger.
