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Prevista Pure WC block 3H
Instructions for Use
for WC flush plates for Prevista, walling in and around
Model Year built:
8512 from 03/2019
en_INT
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Prevista Pure WC block 3H 2 from 21
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Table of contents
1 About these instructions for use 4
Table of contents
1.1
1.2
1.3
Target groups 4
Labelling of notes 4
About this translated version 5
2 Product information 6
2.1
2.1.1
2.2
2.2.1
2.2.2
2.2.3
2.3
Intended use 6
Areas of use 6
Product description 6
Overview 6
Compatible components 7
Technical data 7
Accessories 7
3 Handling 8
3.1
3.1.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.3
3.4
Assembly information 8
Installation dimensions 8
Assembly 9
Mounting the WC block 9
Connecting concealed cistern 12
Mounting the drain elbow 15
Setting up and bricking in the WC block 17
Setting the flush volume 19
Cleaning and maintenance 21
Disposal 21
Prevista Pure WC block 3H 3 from 21
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About these instructions for use
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:
n Heating and sanitary professionals and trained personnel
n Drywall builder
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.
1.2
The installation of Viega products must take place in accordance with
the general rules of engineering and the Viega instructions for use.
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.
Prevista Pure WC block 3H 4 from 21
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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
Prevista Pure WC block 3H 5 from 21
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2 Product information
2.1 Intended use
2.1.1 Areas of use
The Prevista Pure WC block is suitable for walling in and around, for
single mounting, for line mounting, wall mounting, and stand-alone
mounting.
This model is equipped with dual flush technology. The Prevista Pure
WC block can generally be used with all types of WC ceramic.
2.2 Product description
2.2.1 Overview
Product information
Prevista Pure WC block 3H 6 from 21
1 3H concealed cistern
2 Reducer
3 Holder for drain elbow
4 Drain elbow
5 Wall mounting
6 Threaded rods for fixing sanitary objects (gauges for bore hole 180
or 230 mm)
7 Screws for fixing in support profile
8 Mounting set for WC ceramic
9 Flushing pipe
10 WC connection socket with lip seal
11 Protective plug for flushing pipe elbow
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12 Protective plug for drain elbow DN90
13 Revision shaft cover
14 Corner valve
2.2.2 Compatible components
The WC element is compatible with all common WC ceramics, even
with larger projection (barrier-free).
The WC element can be extended by the following compatible compo‐
nents:
n Prevista Dry fixing element
n Prevista Dry fixing set model 8573
n Fixing set model 8180.73
n Accessory set connection electronic model 8655.11
Product information
Mount the components in accordance with the respective instructions
for use.
2.2.3 Technical data
Flush volume
Small flush volume Factory setting approx. 3 l
Large flush volume Factory setting approx. 6 l
2.3 Accessories
Standing bracket for stand-alone mounting
You require the Prevista Pure standing bracket model 8570.54 to enable
the stand-alone mounting of the Prevista Pure WC block.
Setting range approx. 2–4 l
Setting range approx. 3.5–7.5 l
Prevista Pure WC block 3H 7 from 21
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3 Handling
3.1 Assembly information
3.1.1 Installation dimensions
Handling
Fig. 1: Dimensional drawing
Prevista Pure WC block 3H 8 from 21
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3.2 Assembly
3.2.1 Mounting the WC block
Handling
Remove the protection box.
Break the locking clips off the wall mountings.
Push the wall mountings into the element.
Insert the locking clips.
Prevista Pure WC block 3H 9 from 21
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9
Handling
Adjust the construction height of the WC block in accordance with
the on-site marking of the upper edge of the finished floor.
X = 1000 mm
Mark the fixing points.
Drill the holes.
Insert the dowels.
Tighten the WC block via the mounting brackets using a fork
spanner (size 13).
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Line mounting
Handling
Attach rail to the wall.
Attach each of the cisterns to the Steptec rail connector using two
connection pieces.
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3.2.2 Connecting concealed cistern
Turn the cover plate lock 90° in anti-clockwise direction.
Remove the cover plate.
Handling
Place the press connector on the water inlet.
Press the connection.
Seal the threaded connectors of the corner valve.
Screw the corner valve into the thread side of the Steptec rail con‐
nector.
Prevista Pure WC block 3H 12 from 21
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INFO! For the concealed cistern 3H, the corner valve can be
attached from the top or rear.
Remove the plug.
Insert the corner valve into the cistern.
Handling
INFO! Ensure the corner valve is correctly seated.
Use the lock nut to screw the corner valve and the cistern to one
another.
Remove the protective cap from the water supply hose.
Screw the water supply hose and the corner valve to one another.
Prevista Pure WC block 3H 13 from 21
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Insert the cover plate into the cistern.
Turn the cover plate lock by 90° in a clockwise direction.
Handling
Place the revision shaft on the cover plate.
To remove the revision shaft, press in the fixing clips at the
side.
Prevista Pure WC block 3H 14 from 21
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3.2.3 Mounting the drain elbow
Handling
Insert the mounting bracket for the drain elbow.
Fill up the bottom part of the element with mortar.
Replace the protection box.
Prevista Pure WC block 3H 15 from 21
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Insert the drain elbow.
Fasten the drain elbow using the bow.
Attach the protective plug of the flushing pipe elbow.
Fit the protective plug of the drain elbow.
Handling
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3.2.4 Setting up and bricking in the WC block
min. 10
Turn in the threaded rods by hand.
For 180 mm gauge for bore hole: Counter the threaded rods in front
of the element with a nut.
For 230 mm gauge for bore hole: Counter the threaded rods in front
of and after the element with a nut.
Push the protective caps onto the threaded rods.
Brick in the WC block.
Handling
The tiling format must be at least 10 mm.
Prevista Pure WC block 3H 17 from 21
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Tile the WC block.
Handling
Prevista Pure WC block 3H 18 from 21
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3.2.5 Setting the flush volume
Requirements:
n The cistern is freely accessible.
n The water supply has been shut off.
n The ceramic has been mounted.
Handling
Fold the tabs forward.
Lift the drain valve.
Remove the drain valve through the revision opening.
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Set the large flush volume at the drain valve.
-
-
Set the small flush volume at the drain valve.
Handling
Prevista Pure WC block 3H 20 from 21
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Setting the flush flow
Handling
Requirements:
n The drain valve has been dismounted.
n The flushing throttle has been removed.
Unlock the flushing throttle.
Set the flush flow at the throttle.
Lock the flushing throttle.
3.3
Cleaning and maintenance of the concealed cistern
Cleaning and maintenance
The concealed cistern is constantly under mechanical, chemical, and
physical stress. For this reason, the components must be cleaned as
required, and the drain and filling valve seals renewed.
In areas or regions with hard water due to high concentration of calcium
or magnesium salts, there is the risk of limescale deposits developing
on the inlet and drain valves. The valves may have to be replaced,
depending on the extent of the deposits.
3.4
Prevista Pure WC block 3H 21 from 21
Disposal
Separate the product and packaging materials (e. g. paper, metal,
plastic or non-ferrous metals) and dispose of in accordance with valid
national legal requirements.
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