oPERATIoN
Settings
38
| LWZ 130 | LWZ 130 Enthalpie
www.stiebel-eltron.com
The air flow rate is preset for each fan setting by the qualified con-
tractor during commissioning. Constant flow rate control ensures
that the air flow rates through the supply air and extract air fans
are achieved irrespective of the duct pressure.
operating
mode
Fan
stage
description
Humidity prot.
0
Necessary ventilation for ensuring that the building
structure is protected under normal conditions
of use with somewhat reduced moisture loads,
e.g. during temporary absence of users and no dry-
ing of washing in the residential unit.
Stage 1
1
Reduced ventilation is the ventilation necessary to
meet hygiene standards and ensure protection of the
building structure (moisture level) under standard
conditions of use with partially reduced moisture
and pollutant loads, e.g. as a result of intermittent
user absence.
Stage 2
2
Standard ventilation is the ventilation necessary to
meet hygiene standards and ensure protection of the
building structure when users are present.
Intens. vent.
3
Intensive ventilation is increased ventilation with a
higher flow rate to reduce load peaks, e.g. for rapid
ventilation during or after a party. You can switch on
intensive ventilation with the programming unit or
with an optionally connectible external pushbutton.
Time program
mode
0 to 2
Time controlled fan program with various adjustable
fan settings.
LWZ 130 Enthalpie: Enthalpy heat exchanger
The enthalpy heat exchanger is a highly efficient, moisture-trans-
ferring countercurrent heat exchanger with a selective membrane.
The membrane helps to recover moisture from the extract air and
transfer it to the supply air. This prevents the relative humidity
in the rooms from dropping too low during the winter months.
3.1 Frost protection
The appliance has a frost protection controller, which ensures that
it works to optimum effect even at low outside temperatures. If the
outdoor air temperature falls below the selected frost protection
value, the electric preheating coil is switched on. This prevents
the cross-countercurrent heat exchanger from freezing up. When
the preheating coil is active, the "Frost protection" symbol appears
on the display.
3.2 Bypass mode
Bypass mode is usually used for passive cooling in summer, when
the outside temperature is lower than the set room temperature.
In bypass mode, cooler outdoor air can displace the warm air in
the home by bypassing the cross-countercurrent heat exchanger.
When the conditions are met for bypass mode, the "bypass mode"
symbol appears.
The appliance does not have a built-in bypass damper. The appli-
ance checks whether a window contact is connected and activated
at X18.
When the window with the contact switch is open, only
the extract air fan is activated and the supply air fan switches off.
4. Settings
4.1 Switching the appliance on
D
00000
64
39
4
f
Plug the appliance into a standard socket.
4.2 Programming unit
The programming unit enables convenient operation and the dis-
play of system parameters from the living space.
OK
MENU
D
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71
1
1
4
5
3
2
1 Text field
2 Appliance status symbols
3 Touch-Wheel
4 "MENU" button
5 "OK" button
4.2.1 Display
If you do not perform any settings for a while, the display illumi-
nation switches off and the home screen appears.
Press any button to switch the illumination back on again.
4.2.2 Symbols
Symbol description
Time program mode: The set fan program is active. Depending on
the setting, the unit is operated at various fan stages. The number
indicates the fan setting.
Intens. vent.: The unit runs at the highest fan setting for the set
period of time.
Condensate prevention (depending on unit): Condensate preven-
tion is active.
Filter change: Change the filters when this symbol appears.
Fault: The symbol is displayed permanently in the event of faults
that do not impair the basic function of the appliance.
Bypass mode: When the conditions are met for bypass mode, the
"bypass mode" symbol appears. When the symbol appears and
you wish to activate bypass mode, open the window on which the
contact switch is installed. When the "bypass mode" symbol goes
out, close the window.
Frost prot.: The preheating coil for frost protection is switched on.
Fan disable: The symbol is displayed in the event of the "Enable
fan" is set to "Off".
0
1
2
