Viega 8624.1 Instructions For Use Manual

WC flush plate for Prevista
Visign for More 204 electronic

Instructions for Use

for all Prevista concealed cisterns

Model Year built:

8624.1 from 03/2019

en_INT

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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

2.3

2.3.1

2.3.2

2.3.3

2.3.4

2.3.5

2.4

Intended use 6

Areas of use 6

General notes 6

Product description 7

Overview 7

Technical data 8

Connection diagram 9

Operating mode 9

System expansions 10

Accessories 10

3 Handling 13

3.1

3.1.1

3.1.2

3.2

3.2.1

3.2.2

3.2.3

3.3

3.3.1

3.4

3.5

3.5.1

3.6

Assembly information 13

Mounting conditions 13

Required material and tools 13

Assembly 13

Prepare cistern 13

Mounting the flush plate 14

Connecting external sensors 21

Commissioning 22

Setting the flush 22

Errors, faults and remedy 24

Care and maintenance 24

Care tips 24

Disposal 25

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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 Operators
n Consumers

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.

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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 Intended use

2.1.1 Areas of use

Suitable cisterns

The flush plate is intended for the actuation of flushes on Viega con‐
cealed cisterns.

Installation is possible in all Prevista concealed cisterns.

2.2 General notes

n If you notice any damage on the product or individual components,

do not carry out a repair. Instead, have the product replaced by
qualified personnel.

n This product is not intended for use by persons (including children)

with restricted physical, sensory or mental aptitude or lack of experi‐
ence and/or knowledge.

n Make sure that children do not play with this product.

Product information

Symbols

Observe the symbol listed on the label:

CE marking, Product Safety in
Europe

EAC marking, registration of prod‐
ucts in the territory of the Cus‐
toms Union

Direct current

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1

234

5

Product information

Protection class III

The marked product must not be
disposed of as household waste.

2.3 Product description

2.3.1 Overview

Fig. 1: Scope of delivery

1 flush plate
2 Actuating rod
3 retaining bolt
4 silicon grease (2 x 2 g)
5 installation frame

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2.3.2 Technical data

Flush volume

Viega Hygiene+ function

Product information

The flush volumes for the flush actuation are:

n Small flush volume: approx. 2 / 3 / 4 litres
n Large flush volume: approx. 3.5 / 4.5 / 6 / 7.5 litres

For the setting of the flush see Ä Chapter 3.3.1 „Setting the flush“
on page 22.

Hygiene flush volume 3 / 7.5 litres

Hygiene flush interval 1 / 12 / 24 / 72 / 168 hours

Voltage and current

Voltage [V] Current [A]

6 0.8

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2.3.3 Connection diagram

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Product information

Fig. 2: Connection diagram, power pack, WC flush plate for Prevista

1 Power pack
2 Control with motor
3 WC flush plate for Prevista

2.3.4 Operating mode

Flushes from Prevista concealed cisterns are actuated electronically via
the flush plate.

Optionally, a large or small flush volume can be flushed.

Viega Hygiene+ function

Stagnation can lead to the build up of germs (e.g. legionella) in potable
water pipelines. It is important to rinse the pipeline regularly to prevent
the build up of bacteria. The Viega Hygiene+ function was developed for
this reason.

Flushes are actuated in a time-controlled manner with the Viega
Hygiene+ function. Interval and flush volume will be set as required and
saved by the control. All settings remain saved during a power cut.

The function can be disabled.

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2.3.5 System expansions

Radio controlled actuation

Product information

The system's range of functions can be expanded through the connec‐
tion of accessories onto the control.

You need the following accessories to connect a radio receiver instead
of a cable-connected external sensor:

2.4

Required accessories

Optional accessories

Accessories

Signals to actuate the flush (e. g. on support hinged handles) sent by
HEWI radio transmitters can be received by a radio receiver (model

8350.35).

For complete mounting of the electronic flush plate, you need the elec‐
tronic accessory set (model 8655.11).

WC installation frame with LED lighting (model 8650.1)

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Product information

The WC installation frame with LED lighting is a backlit installation frame
with proximity sensor.

installation set (model 8640.14)

The installation set contains a hollow wall socket to house the power
pack and an empty pipe to connect the cistern.

Extension cable (model 8352.690)

2 metre cable for the extension of the power supply.

Use a maximum of two extension cables with the power
pack (4.75 meter total length).

Connection cable (model 8570.55)

3-meter cable for external flush actuation with on-site with commercially
available buttons with closing function or potential-free contact (closing
period 350 ms)

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Product information

Y-cable (model 8580.49)

For connection of a radio receiver.

Battery compartment (model 8570.56)

The battery compartment can be connected for a redundant power
supply using the adapter. The battery compartment is included in the
adapter's scope of delivery.

WC remote actuation (models 8640.1 and 8641.1)

For electronic remote actuation at Prevista concealed cisterns.

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3 Handling

3.1 Assembly information

3.1.1 Mounting conditions

External sensors (optional)

If external sensors are to be connected to the control, their connection
cables or empty pipes must be laid in the cistern before tiling is begun,
see Ä Chapter 2.3.5 „System expansions“ on page 10.

3.1.2 Required material and tools

Material

The following material is required for mounting:

Handling

Tool

3.2 Assembly

3.2.1 Prepare cistern

n if necessary, accessories for the extension of the system Ä Chapter

2.3.5 „System expansions“ on page 10

The following tools are required for mounting:

n cutting knife

Requirements:

n The accessory set electronic (model 8655.11) is mounted.
n The cistern is fitted into the pre-wall.
n The pre-wall is tiled.

Remove the shaft cover.

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3.2.2 Mounting the flush plate

Y

Handling

Cut into the corners of the revision shaft.

Fold the sides of the revision shaft outwards up to the tile level and
snap them off.

Turn the cover plate lock 90° in anti-clockwise direction.

Remove the cover plate.

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Close the corner valve.

Loosen the flexible hose at the filling valve.

Handling

Open the corner valve for a few seconds to flush the pipe.

Close the corner valve.

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Connect the flexible hose to the filling valve.

Re-open the corner valve.

INFO! Check the corner valve and the filling valve for leak tight‐
ness.

Handling

Set the desired flush volume, see Ä Chapter 3.3.1 „Setting
the flush“ on page 22.

Insert the cover plate into the cistern.

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Turn the cover plate lock by 90° in a clockwise direction.

Put on the installation frame.

Handling

Insert the retaining bolts.

Turn the retaining bolts by 90° in a clockwise direction.

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Handling

Align the installation frame.

To fix the retaining bolts, turn safety rings in a clockwise direction.

If you are not sure which cistern is installed, identify it by
means of the following dimensions.

n 3H concealed cistern

n concealed cistern 3L

INFO! For installation from the front into the concealed cisterns
3H, and 3L.

Determine the distance for the actuating rod.

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INFO! Cistern 3H and 3L.

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If necessary, cut the actuating rod to length.

n 0: 75–50 mm
n 1: 50–25 mm
n 2: 25–10 mm

INFO! For installation from above into concealed cistern 3L.

Determine the distance for the actuating rod.

Handling

If necessary, cut the actuating rod to length.

n 0: 60–45 mm
n 1: 45–25 mm
n 2: 25–10 mm

Push the actuating rod through the left opening of the installation
frame as far as it will go.

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Align the actuating rod.

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d

Turn the actuating rod clockwise by 90°.

Apply the silicon grease to the electronic connections.

Connect the control line to the flush plate.

Handling

If required, additional external sensors can be connected to the con‐
trol. See Ä Chapter 3.2.3 „Connecting external sensors“ on page 21.

Mount the flush plate.

The flush plate is mounted.

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3.2.3 Connecting external sensors

Requirements:

n Button with locking function or potential-free contact (closure time at

least 350 ms) available

n Connection cable available

Connect the contact to actuate the small flush volume between the
green (1) and yellow cable (3).

Handling

NOTICE!
Damage to property due to excess voltage

If you apply voltage to the connection cable for the external
button, you will damage the control.

– Do not apply any external voltage!

Fig. 3: WC flush plate, terminal assignment
for external sensors

Fig. 4: WC flush plate, terminal assignment
for external sensors

Connect the contact to actuate the large flush volume between the
green (1) and white cable (2).

Strip the end of the brown cable (e.g., with a lustre terminal).

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3.3 Commissioning

1 2 3 4 5 6 7 8

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3.3.1 Setting the flush

Handling

The smallest possible flush volume must be set at the drain
valve in the cistern.

The flush volume is set via the DIP switches of the control.

A Setting of the flush volume
B Interval of the Viega Hygiene+ function

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C Setting the flush volume of the Viega Hygiene+ function
0 DIP switch position: OFF
1 DIP switch position: ON

The assignment of the DIP switches:

n Switches 1-4 define the flush volume.
n Switches 5-7 define the interval of the Viega Hygiene+ function.
n Switch 8 defines the flush volume of the Viega Hygiene+ function.

NOTICE!
Damage due to moisture

Risk of damage to the control if moisture penetrates.

– Do not remove the protective cover of the DIP switches.

Setting the flush volumes (A)

Handling

Program no. Large flush

volume (in litres)

Program 0

6 3 0 0 0 0

Small flush
volume
(in litres)

Position of the
switches 1—4

1 2 3 4

(factory set‐
ting)

Program 1 3.5 2 0 0 0 1

Program 2 4.5 2 0 0 1 0

Program 3 6 2 0 0 1 1

Program 4 7.5 2 0 1 0 0

Program 5 3.5 3 0 1 0 1

Program 6 4.5 3 0 1 1 0

Program 7 7.5 3 0 1 1 1

Program 8 4.5 4 1 0 0 0

Program 9 6 4 1 0 0 1

Program 10 7.5 4 1 0 1 0

Viega Enabling the Hygiene+ function and setting the intervals (B)

Interval (in hours) Position of switches 5—7

5 6 7

Switched off 0 0 0

1 0 0 1

12 0 1 0

24 0 1 1

72 1 0 0

168 1 0 1

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Setting the flush volume of the Viega Hygiene+ function (C)

Flush volume (in litres) Position of switch 8

3 0

7.5 1

3.4 Errors, faults and remedy

Error Cause Remedy

The WC does not flush. The supply voltage has failed. Check the power supply.

Handling

The cistern is not yet completely
full.

There is no water in the cistern.
The corner valve is closed.

The control is defective. Replace the control.

The plugs of control and flush
plate have not been connected.

The WC flush runs through. The seal at the filling valve is dirty

or damaged.

The seal at the drain valve is dirty
or damaged.

3.5 Care and maintenance

3.5.1 Care tips

Use normal soap or a mild cleaning agent for regular care and preven‐
tion of lime scale on the flush plate. Under no circumstances should
scouring agent or scratching objects be used.

Wait until the cistern is sufficiently
full.

Open the corner valve.

Establish the plug connection.

Ä

Chapter 3.2.2 „Mounting the

flush plate“ on page 14

Check the seal, replace if neces‐
sary.

Check the seal, replace if neces‐
sary.

Strong stains can be removed using typical household cleaner. Rinse
the detergent thoroughly with clear water after the prescribed exposure
time. There should be no residue on the components.

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3.6 Disposal

Handling

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.

Electronic components and batteries must not be put in the domestic
waste but must be disposed of appropriately in conformity with the
WEEE guideline 2012/19/EU.

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