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2. TECHNICAL INFORMATION
2.1 General information
Extraction of stale air and supply of fresh air in public/private premises with heat recovery by a
counter flow aluminium heat exchanger.
Condensation forms during the heat exchange process is recovered in the condensate tray, which
must be connected to a waste water drain.
The CAD HE 325/450/575 has a 100% heat exchanger bypass system which allows free cooling by
night. The principle of free-cooling uses free energy from the outdoor air to ventilate and cool
buildings when outdoor air temperature is lower than the exhaust air temperature, during the night in
summer for example. The system operates automatically or can be used manually.
2.2 Description
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Outdoor air (ODA):
Install the fresh air intake (wall or roof) at a
sufficient distance from any are high pollution
(trees, exhaust fumes, road, etc).
This duct must be sealed and
insulated to prevent condensation.
Supply air (SUP):
To avoid thermal losses and optimize the
performance of the installation, it is
recommended to use insulated ducts.
Extract air (ETA):
To avoid thermal losses and optimize the
performance of the installation, it is
recommended to use insulated ducts.
Exhaust air (EHA):
This duct must be sealed and
insulated to prevent condensation.
By-pass:
The CAD HE 325/450/575 has a 100% heat
exchanger bypass system which allows free
cooling by night. The principle of free-cooling
uses free energy from the outdoor air to
ventilate and cool buildings when outdoor air
temperature is lower than the exhaust air
temperature.
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