Settings; Parameter; P14 : Supply Air Flow Rate Offset; P15 : Humidity Protection Interval - STIEBEL ELTRON LWZ 130 Bedienung Und Installation

INsTALLATIoN

Settings

12. Settings

12.1 Parameter

Dis- Description Code Unit Min. Max. Options
play
„ „ P1 Set room temperature -
„ „ P2 Intensive ventilation -
runtime
„ „ P3 Passive cooling oper- -
ating mode
„ „ P4 Reset filter -
„ „ P6 Flow rate, stage 0 A1
„ „
P7 Flow rate, stage 1 A1
„ „ P8 Flow rate, stage 2 A1
„ „ P9 Flow rate, stage 3 A1
„ „ P14 Supply air flow rate A1
offset
„ „ P15 Humidity protection A1
interval
„ „ P16 Start-up time for hu- A1
midity measurement
„ „ P17 Extract air humidity A1
limit
„ „ P18 Frost protection tem- A1
perature
„ „ P19 Filter change interval A2
„ „ P22 Enable preheater A1
„ „ P24 Passive cooling re- A1
lease temperature
„ „ P25 Passive cooling block- A1
ing temperature
„ „ P26 Passive cooling hys- A1
teresis
„ „ P27 Temperature differ- A1
ential for enabling
passive cooling
„ „
P70 Delete fault list A1
„ „ P80 Day -
„ „ P81 Time -
„ „ P82 Illumination level -
„ „ P83 Mode of backlighting -
„ „ P84 Illumination duration -
„ „ P85 Lower standard dis- -
play
The "service/fault" symbol appears when scrolling through the
parameter list for all parameters that are reserved for qualified
contractors and are only accessible by entering a code.
40 | LWZ 130
326794-40317-9268_LWZ_130_de_en.indb 40
Stand-
ard
°C 5 28 20
min 1 240
0 | 1 | 2 | 3 2
1 | 0 0
m³/h 50 100
m³/h 70 120
m³/h 90 140
m³/h 110 180
m³/h -100 100 0
h 1 24 1
min 5 15
% 5 95 65
°C -5 15 2
d 1 365 90
0 | 1 1
°C 5 15 10
°C 5 15 8
K 0 5 2
°C 0 5 2
0 | 1 0
1 - 7
00:00 23:59
2 10 10
Auto | On | Auto
Off
s 10 500 60
Off | Time | Off
Set room
tempera-
ture | Extract
air tempera-
ture | Extract
air humidity
„P14 : Supply air flow rate offset „
Use this parameter to adjust the supply air flow rate during com-
missioning. The offset relates to standard ventilation. The offset
is converted internally as a percentage for the other fan stages.
Example
- Nominal flow rate (stage 2) : 125 m³/h
- Offset : 25 m³/h
Stage Set flow Off- Set flow
rate set rate + off-
set
0 50
1 90
2 125 25 125+25 = 150 150/125 = 1.2 125x1.2 = 150
3 180
„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 „
Options Effect
0 The internal preheater is completely deactivated.
1 The internal preheater is activated. In order to keep the heat ex-
changer free from ice, the preheater ensures a minimum supply
air temperature with reference to the frost protection tempera-
ture 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.
Offset Internal set flow
factor rate = set flow
rate x offset factor
50x1.2 = 60
90x1.2 = 108
180x1.2 = 216
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26.10.2017 18:38:24