Service And Maintenance; Cleaning The Cross Counter Flow Heat Exchanger; Filter Change - Helios KWL EC 220 D R Montage- Und Betriebsvorschrift

Installation and operating instructions
GB
CHAPTER 3

SERVICE AND MAINTENANCE

WARNING
ATTENTION
IMPORTANT
NOTE
Compact ceiling-mounted units KWL EC 220/340 D
3.0 Service and maintenance
All work must be carried out with the equipment fully isolated from the power supply!
– Allow the unit to cool down or wait for five minutes until the fans have turned off.
– Risk of electric shock, moving parts (fans) and hot surfaces.
3.1

Cleaning the cross counter flow heat exchanger

cross counter flow heat exchanger
☞
The blades must not be damaged in the process!
Do not use water or aggressive cleaning agents!
3.2

Filter change

In order to change the filter,
inspection opening on the front of the compact unit enables easy filter replacement for outside air and
extracted air filters (Fig.32/33). Supply air F7 filters (accessories) are optional.
When using F7 filters, pay attention on air flow direction arrows on the filter labels! The air flow
☞
direction is shown on the unit label.
The KWL compact unit is equipped with outside and extract air filter class G4 as standard (to DIN EN
13779):
Outside air/extract air:
Spare filter Course G4
Spare filter Fine/pollen F7
Spare filter Course G4
Spare filter Fine/pollen F7
The filters are to be checked regularly (see controller display, factory setting every 6 months)
☞
depending on the degree of pollution, to be cleaned if necessary. By vacuuming once or after a
maximum of 1-year operation they must be replaced for hygienic reasons.
If the filters should be moist or mouldy, they must be changed immediately!
TIP!
2 units ELF-KWL 220 D/4/4
1 unit ELF-KWL 220 D/7
2 units ELF-KWL 340 D/4/4
1 unit ELF-KWL 340 D/7
10
.
. The large
Order No. 9638
Order No. 9639
Order No. 4239
Order No. 4240