Viega 4989 User manual

3-way backflow protection (two automatic and one manual
emergency shut-off)
Model
4989
en_INT
Optifix 3 cellar drain Type 5
Instructions for Use

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Table of contents
1About these instructions for use 4
1.1 Target groups 4
1.2 Labelling of notes 4
1.3 About this translated version 5
2Product information 6
2.1 Standards and regulations 6
2.2 Intended use 6
2.2.1 Areas of use 6
2.2.2 Place of installation and installation conditions 7
2.2.3 Maintenance 7
2.3 Product description 8
2.3.1 Overview 8
2.3.2 Technical data 8
2.3.3 Operating mode 8
3Handling 10
3.1 Assembly information 10
3.1.1 Installation dimensions 10
3.2 Assembly 11
3.3 Inspection 12
3.4 Maintenance 13
3.5 Disposal 17
Table of contents
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1 About these instructions for use
Trade mark rights exist for this document; for further information, go to
viega.com/legal.
1.1 Target groups
The information in this instruction manual is directed at the following
groups of people:
nHeating and sanitary professionals and trained personnel
Individuals without the abovementioned training or qualification are not
permitted to mount, install and, if required, maintain this product. This
restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with
the general rules of engineering and the Viega instructions for use.
1.2 Labelling of notes
Warning and advisory texts are set aside from the remainder of the text
and are labelled with the relevant pictographs.
DANGER!
This symbol warns of possible life-threatening injury.
WARNING!
This symbol warns of possible serious injury.
CAUTION!
This symbol warns of possible injury.
NOTICE!
This symbol warns of possible damage to property.
This symbol gives additional information and hints.
About these instructions for use
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1.3 About this translated version
This instruction for use contains important information about the choice
of product or system, assembly and commissioning as well as intended
use and, if required, maintenance measures. The information about the
products, their properties and application technology are based on the
current standards in Europe (e.g. EN) and/or in Germany
(e.g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/
Germany. These should serve as recommendations in the absence of
corresponding national regulations. The relevant national laws, stand‐
ards, regulations, directives and other technical provisions take priority
over the German/European directives specified in this manual: The
information herein is not binding for other countries and regions; as said
above, they should be understood as a recommendation.
About these instructions for use
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2 Product information
2.1 Standards and regulations
The following standards and regulations apply to Germany / Europe and
are provided as a support feature.
Regulations from section: Place of installation and installation condi‐
tions
Scope / Notice Regulations applicable in Ger‐
many
Correct place of installation of the
backflow trap
EN 12056
Securing of drainage points
beneath the backflow level
DIN EN 12056-4
Securing of drainage points
beneath the backflow level
DIN 1986-100
Requirements in backflow traps
type 3
EN 13564
2.2 Intended use
2.2.1 Areas of use
The backflow trap is suitable for faecal matter free, typical household
wastewater up to a temperature of 95 °C with pH values ≥ 4 or ≤ 10.
Use in industrial areas or in pipelines, which transport aggressive liquids
is not permitted. This includes cleaning agents, which can damage sani‐
tary equipment, drainage equipment and pipe materials.
Viega recommends closing the emergency trap if operation, where no
wastewater is produced, is interrupted for a number of days.
Product information
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2.2.2 Place of installation and installation conditions
12345
1 Street / backflow level
2 Area safe from backflow
3 Backflow level
4 Area at risk of backflow
5 Backflow trap
The connection of the upper floor to the underground pipe must be
made between the backflow trap and sewer within the building – only
then is it possible to ensure that the wastewater system can function
faultlessly. To ensure that drainage is guaranteed, backflow traps may
not be employed as the central safeguard for a building with drainage
equipment installed above the backflow level – in the event of backflow,
it would lead to flooding in the building due to wastewater being unable
to drain away.
See Ä „Regulations from section: Place of installation and installation
conditions“ on page 6
2.2.3 Maintenance
Maintenance must be carried out twice a year to ensure safe operation.
See Ä Chapter 3.4 „Maintenance“ on page 13
Product information
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2.3 Product description
2.3.1 Overview
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1 Grate
2 Odour trap
3 Backflow unit
4 Shutter valves
5 Top, rotatable and height-adjustable
6 Base unit
7 Plug for side inlet
8 Odour trap for side inlet
9 Test device
2.3.2 Technical data
Load class K = 300 kg
Drainage capacity 1.8 l/s at 20 mm accumulation
height
2.3.3 Operating mode
The shutter valves of the backflow trap are closed; they open automati‐
cally when the water drains off.
Product information
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In addition, the backflow trap can be closed manually using a manual
actuator.
Product information
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3 Handling
3.1 Assembly information
3.1.1 Installation dimensions
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
Fig. 1: Installation dimensions
Handling
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