7
Insulation of ducts in warm rooms
Genvex recommends the following:
Supply air and extract air ducts:
Supply air ducts, which lead to heated rooms in the home,
must be insulated, since condensation can form on the cold
supply air ducts when cooling. For this purpose, diffusion
tight material must be used, for example a 19 mm Kaiflex
mat, self-adhesive, or 50 mm mineral wool finished with
aluminium foil on the outside.
Extract air ducts installed in heated rooms in the house do
not need to be insulated.
Fresh air and exhaust air ducts:
In warm attics and heated rooms in the house, fresh air
and exhaust air ducts must be insulated with a minimum of
50 mm of insulation.
In addition, the insulation must be covered on the outside
with plastic or aluminium foil to avoid condensation in the
insulation.
Contact your local supplier for instructions about national
guidelines concerning insulation.
Electrical connection
The electrical connection must be performed by a certified
electrician in accordance with EN 60364, refer to the elec-
trical diagram.
The cable between the unit and control panel must be a
4-wire min. 0.25 mm
2
cable with a maximum length of 50 m.
Starting up the system
To achieve optimum operation of the system it must be
adjusted with air measuring equipment.
If you wish to start up the unit before adjustment, the
following must be done before the system is started:
1:
Make sure that the unit has been correctly installed
and that all ducts have been insulated in accordance
with the national regulations.
2:
Make sure that the covers can be opened so that it
is possible to perform service and maintenance on
the unit.
3:
Make sure that the filters are clean (they can be dirty
after installation).
4:
Make sure that the condensation drains are correctly
fitted with water traps and protected against frost.
Pour 1 litre of water into the condensation trays and
see if it runs freely through the condensation drain
pipes.
5:
Adjust all the supply valves so that the valve
closest to the unit is opened three turns from closed
position, while the furthest is open eight turns from
closed position. Open the valves in between 4-7
turns depending on how far they are from the unit.
The unit can now be started up and run until adjustment
with air measurement equipment has been carried out.
Exhaust Air
Fresh Air
Extract Air
Supply Air
