Viega Prevista Pure 8512 User manual

for WC flush plates for Prevista, walling in and around
Model Year built:
8512 from 03/2019
en_INT
Prevista Pure WC block 3H
Instructions for Use

Prevista Pure WC block 3H 2 from 21

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 Intended use 6
2.1.1 Areas of use 6
2.2 Product description 6
2.2.1 Overview 6
2.2.2 Compatible components 7
2.2.3 Technical data 7
2.3 Accessories 7
3Handling 8
3.1 Assembly information 8
3.1.1 Installation dimensions 8
3.2 Assembly 9
3.2.1 Mounting the WC block 9
3.2.2 Connecting concealed cistern 12
3.2.3 Mounting the drain elbow 15
3.2.4 Setting up and bricking in the WC block 17
3.2.5 Setting the flush volume 19
3.3 Cleaning and maintenance 21
3.4 Disposal 21
Table of contents
Prevista Pure WC block 3H 3 from 21

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
nDrywall 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.
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
Prevista Pure WC block 3H 4 from 21

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

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

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
Product information
Prevista Pure WC block 3H 6 from 21

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:
nPrevista Dry fixing element
nPrevista Dry fixing set model 8573
nFixing set model 8180.73
nAccessory set connection electronic model 8655.11
Mount the components in accordance with the respective instructions
for use.
2.2.3 Technical data
Small flush volume Factory setting approx. 3 l
Setting range approx. 2–4 l
Large flush volume Factory setting approx. 6 l
Setting range approx. 3.5–7.5 l
2.3 Accessories
You require the Prevista Pure standing bracket model 8570.54 to enable
the stand-alone mounting of the Prevista Pure WC block.
Flush volume
Standing bracket for stand-alone mounting
Product information
Prevista Pure WC block 3H 7 from 21

3 Handling
3.1 Assembly information
3.1.1 Installation dimensions
Fig. 1: Dimensional drawing
Handling
Prevista Pure WC block 3H 8 from 21

3.2 Assembly
3.2.1 Mounting the WC block
Remove the protection box.
Break the locking clips off the wall mountings.
Push the wall mountings into the element.
Insert the locking clips.
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
Handling
Prevista Pure WC block 3H 9 from 21

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).
9
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Handling
Prevista Pure WC block 3H 10 from 21

Attach rail to the wall.
Attach each of the cisterns to the Steptec rail connector using two
connection pieces.
Line mounting
Handling
Prevista Pure WC block 3H 11 from 21

3.2.2 Connecting concealed cistern
Turn the cover plate lock 90° in anti-clockwise direction.
Remove the cover plate.
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.
Handling
Prevista Pure WC block 3H 12 from 21

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.
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.
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
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Handling
Prevista Pure WC block 3H 13 from 21

Insert the cover plate into the cistern.
Turn the cover plate lock by 90° in a clockwise direction.
Place the revision shaft on the cover plate.
To remove the revision shaft, press in the fixing clips at the
side.

Handling
Prevista Pure WC block 3H 14 from 21

3.2.3 Mounting the drain elbow
Insert the mounting bracket for the drain elbow.
Fill up the bottom part of the element with mortar.
Replace the protection box.
Handling
Prevista Pure WC block 3H 15 from 21

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
Prevista Pure WC block 3H 16 from 21

3.2.4 Setting up and bricking in the WC block
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.
The tiling format must be at least 10 mm.

min. 10
Handling
Prevista Pure WC block 3H 17 from 21

Tile the WC block.
Handling
Prevista Pure WC block 3H 18 from 21

3.2.5 Setting the flush volume
Requirements:
nThe cistern is freely accessible.
nThe water supply has been shut off.
nThe ceramic has been mounted.
Fold the tabs forward.
Lift the drain valve.
Remove the drain valve through the revision opening.
Handling
Prevista Pure WC block 3H 19 from 21

Set the large flush volume at the drain valve.
Set the small flush volume at the drain valve.
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Handling
Prevista Pure WC block 3H 20 from 21