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2.
USER
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GENERAL
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2.
SPECIALIS
T PERSONNEL
EN
EN
KWL
®
Hygrobox KWL HBX EH/WW
Operating and installation instructions
7
Working on the unit
Installation, commissioning, service and repairs must be carried out by an authorised specialist (specialised heating compa-
ny/installation company). When working on the unit, it must be de-energised to zero potential and protected against restart.
The water supply must be interrupted.
UVC disinfection tube
A UVC tube is an integrated standard part of the unit! It must only be replaced by an originally packaged type as specified on
the unit. The UVC tube must only be changed by authorised qualified personnel! Before opening the unit or prior to replacing
the UVC it is absolutely required to switch the unit to a de-energised state and to disconnect the mains plug. Never look into
the illuminated UVC light source without eye protection.
4.2. Unit installation
The national and local regulations must be heeded when installing and setting up the unit. The unit may only be installed in compli-
ance with national installation regulations. Installation shall be carried out in accordance with the general local building, safety and
installation regulations of the relevant community or the water and electricity department and other bodies.
The unit may only be installed in frost-free and dry rooms. The room temperature at the place of installation must be consistently
b5 °C min. and +35 °C max.
The unit is designed for wall installation and may only be set up on a suitable, load-bearing construction. The unit must not be ex-
posed to vibration of any kind.
Air ducts of the ventilation system that are not installed in heated areas must be designed with suitable thermal insulation (risk of
temperature drop below the dew point temperature) in order to prevent condensation.
Components such as windows with poor thermal insulation properties or faulty construction as well as old buildings may show con-
densation in the living space, e.g. on the window glass, when outdoor temperatures are cold and the room air humidity is increased.
The surface temperature of the components must be above the dew point temperature of the room air (at least approx. +15 °C).
In normal operation, mould cannot form in the unit, since the humidifier water is continuously treated and sterilised during operation.
Mounting
The unit is intended for horizontal mounting. It must be mounted on a massive, load-bearing wall with a maximum permissible
deviation of +/- 1° from the horizontal position. The net operating weight of the humidification unit must be taken into consideration
for the suspension. It must be restored immediately to prevent hazards. These worksteps must only be performed by authorised
qualified professionals.
Water connections
The water, heating and sewage connections must be established by specialist personnel. For connection to the water supply, only the
original connection tubes supplied may be used. Ensure that the pipes are tight. The maximum water pressure of the drinking water
connection of 0.7 MPa and the water heater battery of 1 MPa must not be exceeded. The installation of a water stop valve is mandatory.
Water quality
Only drinking water complying with the Drinking Water Ordinance may be used for the water supply. The connection to the drinking
water pipeline is to be established using the connection set supplied. With a chlorine content of more than 0.1 mg/l, the standard wa-
ter filter (5 μm) must be replaced by a dual filter (5 μm / carbon). If the iron content of the drinking water exceeds a value of 0.1 mg/l,
an additional iron filter must be mounted in the water supply line.
The unit can be utilised for a maximum water hardness up to 26 °dH (German hardness). When this value is exceeded, the durability
of the osmosis membrane is significantly reduced.
Operation of the unit
Any work practices that could potentially impair the safety of the unit are prohibited. All warning and protective devices must be
checked for proper functioning at regular intervals. Safety devices must not be dismounted or deactivated.
Mounting, dismounting, maintenance and repair of the unit
If maintenance work or repairs are carried out, the unit must be switched to a de-energised, zero-potential state. No additional equip-
ment must be added on or installed. In this case, consult the manufacturer.
