Dantherm HCV4 User Manual page 9

Function description,
Manual operation If a different volume of air is desired than what the unit provides automatically through
its automatic demand control, the user can manually select from fan steps 0-4. See the
following examples:
7
continued
Step
On the control panel the unit can be set to four different speeds,
fan step 1-4.
0
The unit is shut off. Should only be used in the event of unpleas-
ant outside odours.
If the fans are shut off for more than four hours, a risk of con-
densation arises in the ducts and unit, which may result in mois-
ture damage.
(all four lights for the fan step are off).
Note that fan step 0 will only remain active for a period of 4
hours, after which the unit will return to fan step 3.
1 Can be used overnight or while away from home, (e.g. while away
on holiday).
When the house is empty, the ventilation can be temporarily re-
duced.
2 Used for normal ventilation needs.
Can also be used while away from home, if fan step 1 does not
provide sufficient air change
3 Normally used for greater ventilation needs
For example: for cooking, bath, drying large quantities of
clothes, guests and excess heat
4 Used as needed for greater levels of air change, such as during
and directly after a party, when the house requires ventilation.
Note that fan step 4 is only active for four hours, after which the
unit will again run at fan step 3.
Function
Continued overleaf