8
Function description,
continued
Manual bypass
The purpose of the bypass function is to cool the home by allowing cool outside air
directly into the home without heat recovery.
During normal operation (when manual bypass is
not activated), the unit cools by
using the automatic bypass control when outdoor and indoor temperatures allow,
which is why, in most cases,
manual bypass is not necessary.
For homes with large, south-facing glass facades that tend to generate more heat,
it may be necessary to activate the manual bypass early in the spring and fall, when
the automatic bypass function will not otherwise activate a cool-down with outside
air because the outdoor temperature is below 15°C.
In manual bypass, the unit delivers cool outdoor air to the home for six hours. In-
formation on set points for manual and automatic bypass is available in the instal-
lation guide.
*) Can only be used in HCV 5
Filters
The purpose of the filters is to remove dust and other contaminants before they are
blown into the house, and to protect the heat exchanger and fans from the accu-
mulation of dust and dirt that come from the home.
The unit is delivered as standard with G4 filters for both supply and exhaust air. An
F7 pollen filter (optional extra) can be connected for the supply air, which is an
even finer filter, for example for individuals who suffer from pollen allergies. The
filters must be changed regularly; read more about filter replacement in the “
Summary of Contents for HCV 4
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