Appliance Description; Standard Delivery; Accessories; Preparation - STIEBEL ELTRON LWZ 130 Bedienung Und Installation

INsTALLATIoN
Appliance description
Simultaneous operation
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).
If open flue combustion equipment is operated in the dwelling
at the same time as a ventilation unit, combustion exhaust gases
must be prevented from penetrating the home as a result of pos-
sible negative pressure in the room.
The ventilation unit may only be operated in combination with
intrinsically safe combustion equipment. This combustion equip-
ment has, for example, a draught hood or an exhaust gas monitor
and is permitted to be operated in conjunction with ventilation
units. Alternatively, external, tested safety equipment can be con-
nected to monitor the operation of the combustion equipment.
For example, you can install differential pressure monitoring to
monitor the chimney draught and to switch off the ventilation unit
in the event of a fault.
The equipment for differential pressure monitoring must fulfil the
following requirements:
- Monitoring of the differential pressure between the connec-
tion piece to the chimney and the room where the combus-
tion equipment is installed
- 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 ventilation
- 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
avoided
Note
Differential pressure switches that use the pressure
differential between the outdoor air pressure and the
pressure in the room where the combustion equipment
is sited as a response criterion are not suitable.
Note
We recommend installing and regularly maintaining a
carbon monoxide detector in accordance with EN 50291
for operation of any combustion equipment.
7.3.2 Commissioning
When commissioning the ventilation unit, it is important to check
and document in the commissioning log that combustion exhaust
gases are not penetrating the dwelling in a quantity that is harmful
to health.
Commissioning in Germany
Acceptance is carried out by the local flue gas inspector.
Commissioning outside Germany
Acceptance must be carried out by a specialist. In case of doubt,
you must involve an independent expert in the acceptance pro-
cedure.
38 | LWZ 130
7.3.3 Maintenance
Regular maintenance of the combustion equipment is prescribed.
Maintenance includes checking the exhaust gas extraction system,
the free pipe cross-sections and the safety equipment. The rele-
vant qualified contractor responsible must prove that there is a
sufficient flow of combustion air.
8.

Appliance description

8.1

Standard delivery

The following are delivered with the appliance:
- Hardwired programming unit for wall mounting on finished
walls, with adaptor cable
- Rubber buffer
- Plug and strain relief casing for the programming unit and
the external floating contacts and switches (intensive ventila-
tion, window contact)
8.2

Accessories

- Condensate pump with mounting enclosure
- DN 150 air duct connectors
You can obtain ventilation pipes, extract air and supply air vents
and similar accessories from us.
9.

Preparation

9.1

Storage

Material losses
!
Never store the appliance in dusty places.
9.2

Installation site

WARNING Electrocution
You must not install the appliance in safety zones 0, 1
and 2. The safety zones are defined in the IEC 60364-7-
701 standard.
Material losses
!
The appliance is not approved for outdoor installation.
Material losses
!
Check whether the ceiling can bear the weight of the
appliance.
Material losses
!
The installation room must be free from the risk of frost.
Material losses
!
In dwellings in which only one air conditioning unit is
installed or planned, the appliance must only be operated
with one enthalpy heat exchanger.
Otherwise material losses may arise due to the formation
of condensation.
Ensure the appliance is level after installation.
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