OPERATING AND INSTALLATION INSTRUCTIONS LBE 250 / LBE 500
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6. Versions
LBE with warm water heater battery
(for connection on the left)
Item number: 08LBE250LW, 08LBE500LW
LBE with warm water heater battery
(for connection on the right)
Item number: 08LBE250RW, 08LBE500RW
LBE with PTC electric heater battery
(for connection on the left)
Item number: 08LBE250LE
LBE with PTC electric heater battery
(for connection on the right)
Item number: 08LBE250RE
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7. Description of functions
7.1 WORKING PRINCIPLE
The air humidification unit works
according to the principle of natural
evaporation and guarantees a constant
relative air humidity that can be adjusted
between 40 % and 60 % in the supply air.
The unit works automatically, and the air
humidity is electronically monitored in
the device. The indoor air can thus not
be overhumidified.
The air humidification unit is dimensi-
oned for a maximum operating air
volume flow of 250 m³/h (LBE 250) /
500 m³/h (LBE 500). The water tank is
supplied with mains water from the
mains water supply. According to the
evaporative power, a maximum of 2.5
litres of water, which is continuously
placed, is located in the tank. The
maximum filling level is limited using a
floating switch and mechanical overflow.
The water in the tank is continuously
disinfected using UVC light, whereby the
UVC pipe illuminates the complete water
tank and evaporation surface. The UVC
pipe has a radiant power of 4.3 watt at a
wavelength of 253.7 nm.
For safety reasons, the UVC pipe is
monitored by UV diode. This monitoring
process can detect a failure, soiling, or
line breakage of the disinfection unit. If
the radiant power is too low, the water is
drained and a error message is output.
The unit is automatically shut down in
case the UVC pipe malfunctions. To
prevent deposits during operation,
especially scale deposits on the bladed
rotary evaporator and the water tank,
the standard version of the air humidifi-
cation unit is equipped with a reverse
osmosis unit. In the standard design, the
reverse osmosis unit is integrated into
the water inlet pipe between the
solenoid valve and the water tank.
A prefiltering unit for the water supply,
which should be installed during the
course of mounting, is included in the
scope of supply. As an additional safety
measure, the water is drained and an
error message output in case of the air
humidity is exceeded by more than 25 %
of the reference value of the water for
longer tan 25 hours.
