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INSTALLATION
Appliance description
22
| LWE 40
www.stiebel-eltron.com
2.3 Operation of the appliance in buildings with
combustion equipment
If the building contains combustion equipment (tiled stoves, fire-
places, etc.), the responsible flue gas inspector must be consulted
at the design stage. The flue gas inspector assesses whether all
statutory regulations are observed. Here, a differentiation is made
between room sealed and open flue combustion equipment.
For simultaneous operation of combustion equipment and a me-
chanical ventilation system, we recommend choosing approved
room sealed combustion equipment (in Germany, with DIBt ap-
proval).
2.3.1 Room sealed combustion equipment
In conjunction with room sealed combustion equipment, no addi-
tional precautions are generally required. Assessment is carried
out by the flue gas inspector.
2.3.2 Open flue combustion equipment
!
WARNING INJURY
If open flue combustion equipment is operated with the
mechanical ventilation system, tested safety equipment
must be installed. The combustion equipment must also
have a separate combustion air supply.
With open flue combustion equipment, a differentiation must be
made between alternate and simultaneous operation of the ven-
tilation system and combustion equipment.
Alternate operation
Alternate operation means that, when the combustion equipment
is commissioned, the mechanical ventilation system is switched
off and/or cannot be started.
Simultaneous operation
!
WARNING INJURY
To prevent any flue gas escaping into the installation
room, it is necessary to ensure that sufficient combustion
air is supplied or that the negative pressure in rooms
where the stove/fireplace is installed is not greater
than 4 Pa. Tested safety equipment must be installed
to monitor the chimney draught (differential pressure
monitoring) and to switch off the ventilation unit in the
event of a fault.
f
f
Install the safety equipment in such a way that it interrupts
the appliance power supply when required.
The equipment for differential pressure monitoring should fulfil
the following requirements:
- Monitoring of the differential pressure between the connec-
tion piece to the chimney and the combustion equipment
installation room
- Possibility of matching the shutdown value for the differential
pressure to the minimum draught requirement for the com-
bustion equipment
- Floating contact to switch off the ventilation function
- Optional connection of a temperature capturing device so
that differential pressure monitoring is only enabled when
the combustion equipment is in operation and so that un-
wanted shutdowns due to environmental influences can be
prevented
Note
Differential pressure switches that use the pressure dif-
ferential between the outdoor air pressure and the pres-
sure in the combustion equipment installation room as a
response criterion are not suitable.
3. Appliance description
3.1 Standard delivery
- Wall mount casing
3.2 Accessories
- Control sets : Programming unit , Control unit , Flush box ,
Power supply unit subject to the number of appliances
- Internal panel
- Internal sound insulation panel
- External panel
- External sound insulation panel
- Filter mat set ISO Coarse > 30 % (G2)
- Filter mat set ISO Coarse > 60 % (G4)
- Filter mat set ePM
10
≥ 50 % (M5)
- Filter mat set ePM
1
≥ 50 % (F7)
- Time switch
- Humidity sensor
- CO
2
sensor
- Reveal duct
- Air duct
4. Preparation
4.1 Transport
Material losses
Heavy impacts may impair functionality and damage the
appliance.
f
f
Always store and transport the appliance in its de-
livery packaging.
f
f
Store the appliance in a dry place protected against
vibrations.
Material losses
Leave the appliance in its protective packaging until
shortly before installation.