Maintenance; Filter And Heat Recovery Cell; Fans; Condensing Water Outlets - Helios KWL EC 500 Eco R Instructions De Montage

MAINTENANCE

ATTENTION: All work only in dead state! Before maintenance an
m
isolator is required for with a minimum of 3 mm contact opening
of each pole. Electrical connection should only be carried out by a
qualified person.

Filter and heat recovery cell

• When the Maintenance reminder turns on the indicator
lamp in the 4-level operation switch, check the filters.
Outdoor air is filtered in the unit with two separate filters.
A coarse filter (A) of class G4 filters off insects, rough pollen
and other dust. A fine filter (B) of class F7 filters off invisible
dust. Extract air is filtered with a filter (C) of class G4.
• Clean the coarse filters (A and C) by washing them at least
twice a year.
• When you open the door of KWL EC 500 Eco, the security
switch turns voltage off. Filters can now be pulled out.
Wash the coarse filters with +25…30 °C warm water and
washingup liquid, pressing them smoothly. Do not handle
the filters with force. When washing is done properly, filters
stand cleaning 4…5 times. In other words, you have to
replace them at least every years or when needed.
• The fine filter is not washable. Clean it at the same time as
the coarse filters, using the brush nozzle of a vacuum clea­
ner. When cleaning, be careful no to break filter material.
To ensure good supply air quality, replace the filter at least
once a year or more often, depending on local air quality.
It is recommended to replace filters in the autumn. This
way the filters stay cleaner through the winter and can ef­
fectively filter off dust in the following spring.
Filters can be ordered via internet: www.ersatzluftfilter.de
• IIt is also recommended to check the cleanliness of the cross-counter heat exchanger in
connection with filters about every 2-years. Handle the thin fins carefully, because they
could bend easily. If the exchanger is contaminated, soak it in a solution of water. Rinse
the exchanger with a jet of water. Pay attention, that no wetness remains inside of the
cross-counter heat exchanger before installation. If the cell is contaminated, soak it in a
solution of water and washing up liquid. Rinse the cell clean with a jet of water.
When all the water has drained from between the laminas, put the cell back in place. Lift
the cell while pushing it in place. For this pull out the sealing strip. Lift and push at the
same time the exchanger and place it on the sealings below. Insert sealing strip again and
check fit of sealing.

Fans

• Check the fans at least every year of pollution or if necessary clean them. Use a small
brush an cathartic against rich. Take care! Do not let water flow to the motor parts.
Dry the fans before mounted them into the unit!
• The exhaust and outdoor air fans (E and F) have been fastened with rubber collars. When
removing the fans for maintenance, release the ear fixed to the fan over the collar flange
by bending it upwards. Remove the rubber collar from the opening and turn the fan so
that it can be removed. Remove the plug behind the fan. Clean the fan blades with
compressed air or with brush. Each blade has to be so clean that the fans stay balanced.
Take care not to remove the balancing pieces attached to the fan blade.
• If you use water in cleaning, do not let it flow to the electrical parts.
Condsensing water outlets
• During the heating season, humidity of extract air condenses to water. Water formation
can be abundant in new buildings, during baths and when wet clothes are being aired.
• Condensing water needs to flow out from the ventilation unit without hindrance. In
connection with maintenance, e.g. in the autumn before the beginning of the heating
season, make sure that the condensing water outlet in the bottom reservoir is not clogged.
You may check it by pouring a little water in the reservoir. Do not let water flow to the
electrical parts.
B
E
12
G
A
C
H
F
Filter G4
A
Fine filter F7 (optional)
B
Coarse filter G4
C
Heat recovery cell
D
Exhaust air fan
E
Outdoor air fan
F
D
Door
G
Sealing strip
H