INsTALLATIoN
Settings
www.stiebel-eltron.com LWZ130 | 45
ENGLISH
P15 : Humidity protection interval
If you set fan stage 0, the appliance switches to a 24 hour dormant
phase. The humidity protection control unit only starts after this.
The appliance measures the humidity of the extract air for the
time set in P16. The appliance compares the last measured value
with the limit value set in P17. If the limit value is exceeded, the
appliance starts to ventilate. The appliance stops the ventilation
once the limit value is fallen below. At this point, the humidity
protection interval restarts, at the end of which the moisture is
measured.
P16 : Start-up time for humidity measurement
The appliance measures the humidity of the extract air for the time
set in P16. The appliance compares the last measured value with
the limit value set in P17.
P22 : Enable preheater
Effect
0 The internal preheater is completely deactivated.
1
The internal preheater is activated. In order to keep the heat exchanger
free from ice, the preheater ensures a minimum supply air temperature
with reference to the frost protection temperature adjustable in parameter
P18.
While this parameter is being displayed or adjusted, the "frost
protection" symbol is shown on the display.
P24 : Passive cooling release temperature
To enable checking of the other parameters for passive cooling,
the outdoor air temperature must be no less than the value set
in this parameter.
P25 : Passive cooling blocking temperature
If the outdoor air temperature falls below this blocking tempera-
ture, passive cooling is deactivated.
P26 : Passive cooling hysteresis
To make cooling possible, the outdoor air temperature must be
lower than the extract air temperature by the value set in this
parameter.
P27 : Temperature differential for enabling passive
cooling
Use this parameter to define the temperature differential that must
be exceeded for passive cooling to be enabled. In order for passive
cooling to be enabled, the following condition must be met.
P3 = 2 : Outdoor air temperature > set room temperature + P27
P3 = 3 : Extract air temperature > set room temperature + P27
P29 : Appliance type
This parameter is set at the factory. The parameter can only be set
after the controller assembly has been replaced.
P30 : Temperature for enabling frost protection
The unit only activates frost protection heating if the outdoor air
temperature drops to the value that can be set in this parameter.
P31 : Enabling of humidity-dependent flow rate
control
With humidity-dependent flow rate control, the air flow rate is
increased or decreased depending on the humidity level.
P70 : Delete fault list
To delete the fault list, set this parameter to 1. Press the "OK"
button to confirm. Afterwards, 0 is displayed again and the fault
list is deleted.
12.2 Actual values
Description Unit
I1 Passive cooling status
I2 Extract air temperature °C
I3 Relative humidity of extract air %
I4 Filter service life h
I5 Appliance software version
I6 Unit software patch
I7 Terminal device serial number
I8 Programming unit software version
I9 Outdoor air temperature °C
I10 Supply air temperature °C
I11 Exhaust air temperature °C
I12 Relative humidity of outdoor air %
I13 Extract air dew point °C
I15 Supply air fan drive output %
I17 Exhaust air fan drive output %
I19 Percentage output of internal preheating %
I20 Ventilation unit operating time d
I21 Fan operating time d
I23 Fan speed, supply air fan rpm
I24 Fan speed, exhaust air fan rpm
I70-79 Fault
12.3 Code
Cod
Enter 1000 to enable actual values and parameters, which are
reserved for qualified contractors. "A1" is shown on the display
when this is entered correctly.
326794-41212-9444_LWZ_130_de_en.indb 45 09.05.2019 12:06:08
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