General ventilation connection
Ventilation installation must be carried out in accord-
ance with current norms and directives.
To prevent fan noise being transferred to the supply
air devices, it may be a good idea to install a silencer
in the duct. This is especially important if there are
supply air devices in bedrooms.
Connections must be made via flexible hoses, which
must be installed so that they are easy to replace. The
air should be routed to the outdoor air duct through
an outside wall grille in the facade. The outer wall grille
must be installed protected from the weather and must
be designed so that no rain water can penetrate the
facade. The outdoor air duct must be provided with
diffusion-tight insulation over its entire length. Ensure
that the condensation insulation is sealed at any joints
and/or at lead-in nipples, silencers, roof cowls or similar.
Provision must be made for inspection and cleaning of
the duct. Make sure that there are no reductions of
cross-sectional area in the form of creases, tight bends
etc, since this will reduce the ventilation capacity. The
air duct system must be a minimum of air tightness
class B.
Ventilation flow
The supply air flow must be lower than the exhaust air
flow to prevent over pressure in the house.
Ensure that the ventilation openings are not blocked.
Set the ventilation capacity in the heat pump's menu
system (menu 5.1.6).
Adjusting ventilation
To obtain the necessary air exchange in every room of
the house, the exhaust air device and the supply air
device must be correctly positioned and adjusted and
the fans in the heat pump and supply air module adjus-
ted.
Immediately after installation adjust the ventilation so
that it is set according to the projected value of the
house.
A defective ventilation installation may lead to reduced
installation efficiency and thus poorer operating eco-
nomy, and may result in moisture damage to the house.
SAM 40Chapter 4 | Pipe and ventilation connections16
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