Checks Before Commissioning; Initial Start-Up; Recommissioning; Settings - STIEBEL ELTRON LA 100 U Bedienung Und Installation

INsTALLATIoN

settings

According to dIN 18017-3, the extract air flow rate can be re-
duced to 0 at times of low demand in windowless bathrooms
and toilets in which little moisture occurs during normal use.
In this case, the appliance must have a run-on time capable of
extracting at least 15 m³ of air from the room.

11.1 Checks before commissioning

Property damage
!
Never operate the appliance without filters.
f Check whether the filter is installed.

11.2 Initial start-up

Property damage
!
If there are excessively large amounts of dust outside
or inside, the filter and ventilation components may
become clogged. dust is created by cutting tiles or
working with plasterboard, for example.
f do not operate the appliance during building
work.
Appliance handover
f explain the functions of the appliance to the user. show
the user how to operate the appliance.
f Make users aware of potential dangers.
f Make users aware of critical environmental factors and
requirements concerning the installation site.
f Hand over these operating and installation instructions to
users for safekeeping.

11.3 Recommissioning

f switch on the power supply via the fuse/MCB in the distri-
bution board.
12. Settings

12.1 Time programs and air flow rate

on the outside of the fan terminal box, protected by a rubber
cover, there are two dIP switches with four pins each.
The pin positions can be changed to set various setting com-
binations.
definition: 0 = pin up, 1 = pin down (on)
Left DIP switch
Start delay [min.]
0
1
2
4
Stop delay [min.]
0
4
8
15
LA 100
Right DIP switch
Air flow rate at base load [m³/h]
20
30
40
60
Air flow rate at full load [m³/h]
30
50
60
90 For surface-mounted appliances only
100 For flush-mounted appliances only

13. Shutting down the system

The appliance can only be switched off by interrupting the
power supply.
f switch off the power supply to the appliance via the fuse/
MCB in the distribution board.

14. Troubleshooting

Problem
The fan does not stop
running.
when the fan is
switched off, odours
drift into the living
space from the air duct.
when the fan is
switched off, the check
valve makes a banging
noise.
The fan is too loud.
Pin
1 2
0 0
0 1
The fan of appliances
1 0
equipped with a hu-
1 1
midity sensor starts
automatically the first
Pin
time it has power.
3 4
0 0
0 1
1 0
1 1
Cause Remedy
The fan is drawing Check the circuit and the
current from some- connections.
where else (e.g. from
a fluorescent tube in
the lighting system).
The check valve does Check the check valve gas-
not close properly. ket for damage or creases.
Adjust the check valve
spring correctly.
replace the check valve.
Check whether the check
valve is in the correct posi-
tion in the enclosure.
There is negative Check the roof cowl (wind
pressure in the pipe pressure).
system.
Closing a door, Adjust the check valve
for example, created spring correctly.
positive pressure in
the room.
The filter is dirty. Change the filter.
The check valve Adjust the check valve
spring is too taut. spring correctly.
The bearing in the replace the fan motor.
fan motor is dam-
aged.
extractors create ensure that sufficient air
negative pressure in can flow in.
the building. If suffi-
cient air cannot flow
in, this may cause
excessive noise.
The humidity con- No action required. The
trol does not have a fan will switch off again
standard value for automatically. The fan is
the humidity sensor. working as intended.
Pin
1 2
0 1
0 0
1 0
1 1
Pin
3 4
0 1
1 0
0 0
1 1
1 1
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