mundoclima Aerotherm BCC 200 CONNECT Manuel D'installation, D'utilisation Et D'entretien page 123

7 AERAULIC CONN ECTIONS
In terms of the unit connect with duct reaching to outdoor, a
reliable water-resistant measure must be conduct on the duct, to
prevent water from dropping into internal of the unit .
In case the water entering to internal components of the unit, the
component might be damaged or causing physical danger.
The ducts should not be tilted towards unit to avoid the con-
densate and water return.
OK
A
A - Insulated pipe