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2.
USER
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2.
GENERAL
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2.
SPECIALIS
T PERSONNEL
EN
EN
KWL
®
Hygrobox KWL HBX EH/WW
Operating and installation instructions
30
12.4. Air duct connections
When installing the air duct connections, you must ensure that no metal chips enter the air humidification unit (they may cause
spots of corrosion in the water tank). Upon completion of the assembly work, the air ducts must be cleaned thoroughly.
12.5. Sewage connection
The two sewage connections (1 x from the reverse osmosis unit and 1 x from the drain pump) must protrude freely approx. 3 cm into
the sewage connection pipe supplied (HT- pipe DN 40 mm).
An odour seal (siphon) must be established on site.
No tubes must be connected directly to the drain.
The tank content of 2.5 litres of water is drained within approx. 10 seconds.
12.6. Drinking water connection
Only drinking water complying with the Drinking Water Ordinance may be used for the water supply. For connection to the water
supply only the original connection tubes supplied may be used. The respective limit values, namely a minimum operating pressure
of 0.35 MPa and a maximum operating pressure of 0.7 MPa as well as a minimum water temperature of 8 °C and a maximum water
temperature of 30 °C, must neither be underrun nor exceeded.
With a chlorine content of more than 0.1 mg/l, the standard water filter (5 μm) must be replaced by a dual filter (5 μm /
carbon).
If the iron content of the water exceeds a value of 0.1 mg/l, an additional iron filter must be mounted in the water supply line
upstream of the fine filter. The unit is suited for operation with a maximum water hardness of
26 °dH.
Exceeding the limit values specified substantially reduces the lifetime of the osmosis membrane!
Note!
In the case of connection to the drinking water network, the use of a system separator is recommended.
Let the two sewage connections freely run into
the sewage connection pipe approx. 3 cm.
Detail Z
