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Installation and Operating Instructions
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WARNING
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ATTENTION
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WARNING
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WARNING
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WARNING
Central ventilation unit – KWL 220/340 D
The unit door can fall down when removing and cause serious injuries.
> Wear protective footwear.
> Carefully remove the unit door with both hands.
1. Loosen and remove the screws in the unit door.
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Risk of injury due to the high weight of the heat exchanger!
The heat exchanger can fall down and cause serious injuries when removed from the unit.
> Wear protective footwear.
> Carefully remove the heat exchanger from the unit with both hands.
2. Remove heat exchanger.
Damage to the unit due to the use of aggressive cleaning agents
Aggressive cleaning agents can damage the unit.
> Do not use aggressive cleaning agents.
3. Remove dirt with a damp cloth and a small amount of washing-up liquid.
9.2
Filter maintenance and replacement
9.2.1 Filter maintenance
The filters must be checked for contamination and dirt (visual inspection) and, if necessary, replaced, see section 9.2.2
„Filter replacement", page 28 as needed or at least every 6 months.
The maximum service life of the filters is 1 year. The filters must then be replaced.
9.2.2 Filter replacement
The need to change the filters is displayed:
– via the easyControls 3.0 software by the symbol
– via the control element KWL-BE Touch by the symbol
– via the control element KWL-BE Eco by LED lighting up.
The arrangement of the air filters can be found on the unit label. When installing the filter, the air direction according to
the unit label must be observed, which is indicated by arrows on the filters.
When using ePM1 50 %/activated carbon filters, place the filter in the retaining bracket (included in delivery) and insert
in the guide slot in the unit.
Proceed as follows to replace the filters:
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Risk of injury due to the unit door falling down!
The unit door can fall down when removing and cause
serious injuries.
> Wear protective footwear.
> Carefully remove the unit door with both hands.
1. Loosen and remove the screws in the unit door.
2. Pull intake air filter
ò
Fig. 48).
3. Pull extract air filter
(incl. frame) to the front and re-
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place (see Fig. 48).
4. Optional: Pull fine/pollen filter (ePM1 50 %)
frame to the front and replace (see Fig. 48).
5. Confirm the filter replacement:
– enter the filter replacement date and confirm via the
easyControls 3.0 software in the menu "Home-
page"> "Filter replacement".
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– confirm with
via the control element KWL-BE Touch.
– the filter replacement can be confirmed via the slide switch control element KWL-BE Eco. For this purpose, switch
through all operating stages 4x within one second (up–down–up–down.
The unit is equipped with filters ISO Coarse 75 % on the intake air and extract air sides as standard.
The filters are available as accessories:
Replacement air filter Course filter Coarse 75 % (2 pcs) ELF-KWL 220 D/4/4
Replacement air filter Fine/pollen filter ePM1 50% (1 pc) ELF-KWL 220 D/7
Replacement air filter Course filter Coarse 75 % (2 pcs) ELF-KWL 340 D/4/4
Replacement air filter Fine/pollen filter ePM1 50% (1 pc) ELF-KWL 340 D/7
Activated carbon filter (instead of F7 Filter) (1 pc)
Activated carbon filter (instead of F7 Filter) (1 pc)
The filters can be ordered at www.Ersatzluftfilter.de
9.3
Heat exchanger maintenance and cleaning
9.3.1 Heat exchanger maintenance
The heat exchanger must be checked for contamination and dirt (visual inspection) and, if necessary, cleaned, see
section 9.3.2 „Heat exchanger cleaning", page 28.
9.3.2 Heat exchanger cleaning
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Risk of burns due to hot surfaces!
Hot surfaces can cause serious burns.
> Allow unit to cool down for at least 5 minutes or wait until the fans are turned off.
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Risk of injury due to rotating fans!
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.
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to the front and replace (see
incl.
ä
ELF-KWL 220 AK
ELF-KWL 340 AK
28
.
.
ù
ä
Ref. no. 09638
Ref. no. 09639
Ref. no. 04239
Ref. no. 04240
Ref. no. 03050
Ref. no. 03051
EN
Fig. 48
ò
Fig.: Right unit
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