Vallox A3609, Manual, Page: 10 / 24

10
CLEANING THE HEAT RECOVERY CELL
Check that the heat recovery cell (D) is clean roughly once a
year when the filters are being replaced. Clean by washing as
required.
To check the heat recovery cell (HR cell):
1. Disconnect the ventilation unit from the mains electricity
supply.
2. Lift the latch to open the door of the ventilation unit.
3. Lift the door off.
CAUTION
The door is heavy.
4. Pull the coarse filters (A, C) and filter supports out of the
unit.
5. Remove the sealing strip (E) above the HR cell.
6. Remove the side sealing strip (F).
7. Remove the fine filter (B).
8. Lift and pull the cell (D) out of the unit.
IMPORTANT
Handle the cell carefully! For example, do not lift the
cell by the layers. The cell layers are very thin and
easily damaged.
9. If the cell is dirty, clean it by immersing it in warm water,
to which a small amount of a mild detergent has been
added.
10. Rinse the cell clean with a water spray. Do not use a high-
pressure cleaner.
11. When all the water has drained from between the layers,
reassemble the ventilation unit in the reverse order.
12. Close the door. Ensure that the safety switch catch of the
door is touching the safety switch.
13. Plug the ventilation unit back into the mains.
14. The heat recovery cell has now been checked and
cleaned.
CONDENSING WATER
In the heating season, the extract air humidity condenses to
water. In new buildings, condensation runoff can form rapidly.
Condensed water must be able to freely leave the unit.
At some time before the heating season begins (e.g. during
autumn maintenance), check that the siphon or the condensing
water outlet in the bottom pool are not clogged. To check this,
pour some water into the pool. Clean as required.
NOTE
Some condensing water
may have accumulated
in the bottom pool
of the unit; this is
normal and requires no
corrective action.
WARNING
Water must at all times
be kept out of the
electrical system.
MAINTENANCE
S
C
A
B