General Information; Relevant Documents; Safety; General Safety Instructions - STIEBEL ELTRON VRL-C 300 G Premium Installation

INSTALLATIoN

General information

INSTALLATIoN
1. General information
These instructions are intended for qualified contractors.
Note
These instructions only apply to the installation, commis-
sioning and operation of a single appliance with a limited
range of accessories.
Note
Read these instructions carefully before using the appli-
ance and retain them for future reference. Pass on these
instructions to a new user if required.
1.1

Relevant documents

Operation VRL-C 300-870
Commissioning VRL-C 300-870
Further documents relating to this product can be found on our
website www.stiebel-eltron.com.
2.

Safety

Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
Contractors are responsible for adherence to all applicable regu-
lations during installation and commissioning.
2.1

General safety instructions

We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
2.2

Instructions, standards and regulations

Note
Observe all applicable national and regional regulations
and instructions.
WARNING Injury
!
In connection with the fire prevention regulations con-
cerning the installation of ventilation systems, observe
all country-specific regulations and requirements. In
Germany, these are particularly the building regulation
guideline on fire prevention requirements of ventilation
systems in its applicable version.
2.3

Test symbols

See type plate on the appliance.
www.stiebel-eltron.com
2.4 Operation of the appliance in buildings with
combustion equipment
The term "combustion equipment" used below includes, for exam-
ple, tiled stoves, fireplaces and equipment with gas combustion.
WARNING Injury
!
Ventilation units can generate negative pressure in the
dwelling. If combustion equipment is operating at the
same time, combustion exhaust gases can penetrate the
combustion equipment installation room. It is therefore
important to observe a number of points for simulta-
neous operation of a ventilation unit and combustion
equipment.
The engineering, installation and operation of the ventilation unit
and combustion equipment must be carried out in accordance with
national and regional regulations.
2.4.1 Planning safety measures
Together with the relevant authorities, engineers plan the safety
measures that are required for simultaneous operation of a ven-
tilation unit and combustion equipment.
Alternate operation
Alternate operation means that, when the combustion equipment
is started, the mechanical ventilation system is switched off and/
or cannot be started. Alternate operation must be ensured by
appropriate measures, e.g. automatically enforced shutdown of
the ventilation unit.
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 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
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