STIEBEL ELTRON LWZ 130 - Parameter Settings - Part 1; Parameter P1: Set Room Temperature; Parameter P3: Passive Cooling Mode; Parameter P4: Reset Filter Indicator

OPERATION
Settings
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ENGLISH
4.5.1 Parameter
Description Unit Min. Max. Options
P1 Set room temperature °C 5 28
P2 This parameter defines the
runtime for intensive ven-
tilation. After this time has
expired, the appliance returns
to the previously applicable
fan stage.
min 1 240
P3 Passive cooling operating
mode
0| 1| 2 | 3
P4 Reset filter 1 | 0
P28 Enable fan On | OFF
P80 Day 1 - 7
P81 Time 00:00 23:59
P82 Level of lighting 2 10
P83 Mode of backlighting Auto | On | OFF
P84 Illumination duration s 1 500
P85 Lower standard display OFF | Time | Set room
temperature | Extract
air temp. | Extract air
humidity
In order to set the parameter, you must first make it editable by
pressing the "OK" button. Then you can change the value with
the Touch-Wheel. If you do not press the "OK" button to make the
parameter editable, activating the Touch-Wheel causes the next
parameter to be displayed.
Press the "OK" button to save the set value for a parameter. If you
do not confirm the parameter change with the "OK" button, your
change will be lost.
P1 : Set room temperature
Set an outside temperature, above which passive cooling should
ensure that outdoor air bypasses the heat exchanger and flows
directly into the building. During passive cooling, only the extract
air fan is operated and the supply air fan is stopped.
P3 : Passive cooling operating mode
Effect
0 Passive cooling is permanently disabled. Air flows through the heat ex-
changer.
1 Passive cooling is enabled.
2 Passive cooling operates with summer day detection. This option is set in
the delivered condition.
3 Passive cooling operates subject to the extract air temperature.
The appliance checks whether a window contact is connected and
activated at X18. See parameter P34.
Note
The qualified contractor can set the parameters men-
tioned in the description of this parameter.
P24 : Passive cooling release temperature
P25 : Passive cooling blocking temperature
P26 : Passive cooling hysteresis
P27 : Temperature differential for enabling passive cooling
P3 = 2 : Passive cooling with summer day detection
In order for passive cooling to be enabled, the following condition
must apply for 60minutes: Outdoor air temperature > Set room
temperature + P27
If all of the following conditions are met, passive cooling switches
the appliance to extract air mode.
- Outdoor air temperature < Extract air temp. - P26
- Extract air temp. > Set room temperature
If one of the following conditions is met, passive cooling termi-
nates extract air mode.
- Outdoor air temperature < P25
- Outdoor air temperature > Extract air temp. - P26
- Extract air temp. < Set room temperature
P3 = 3 : Passive cooling subject to extract air temperature
In order for passive cooling to be enabled, the following condition
must apply for 60minutes: Extract air temp. > Set room temper-
ature + P27
This delayed activation is intended to prevent cooling down in
spring and autumn.
If all of the following conditions are met, passive cooling switches
the appliance to extract air mode.
- Outdoor air temperature < Extract air temp. - P26
- Extract air temp. > Set room temperature
If one of the following conditions is met, passive cooling termi-
nates extract air mode.
- Outdoor air temperature < P25
- Outdoor air temperature > Extract air temp. - P26
- Extract air temp. < Set room temperature
P4 : Reset filter
f Set this parameter to 1 after changing the filters.
The appliance resets the filter runtime to 0. This parameter is
automatically reset to 0.
P28 : Enable fan
You can switch off the fans at any time via the programming unit
menu, e.g. to deactivate ventilation if there is a fire.
Effect
OFF The fans are deactivated. "OFF" and the fan icon flash on the display.
On The fans are enabled.
P80 : Day
1 Monday
2 Tuesday
3 Wednesday
4 Thursday
5 Friday
6 Saturday
7 Sunday