Viega 2281.7 User manual

For thermal / hydraulic line calibration in potable water installa‐
tions
Model Year built:
2281.7 from 03/2019
en_INT
Easytop circulation regulation valve S/E
with SC-Contur
Instructions for Use

Easytop circulation regulation valve S/E with SC-Contur 2 from 27

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 8
2.2.1 Areas of use 8
2.2.2 Media 8
2.3 Product description 9
2.3.1 Overview 9
2.3.2 Press connection with SC-Contur 9
2.3.3 Sealing elements 10
2.3.4 Markings on components 11
2.3.5 Compatible components 11
2.3.6 Operating mode 11
2.3.7 Technical data 12
2.4 Information for use 15
2.4.1 Corrosion 15
2.5 Optional accessories 15
3Handling 17
3.1 Assembly information 17
3.1.1 Permitted exchange of sealing elements 17
3.1.2 Mounting instructions 17
3.1.3 Required tools 18
3.2 Assembly 19
3.2.1 Replacing the sealing element 19
3.2.2 Shortening the pipes 20
3.2.3 Pressing the connection 20
3.2.4 Installation position and settings 22
3.2.5 Mounting the Easytop drainage valve and Easytop thermom‐
eter 25
3.2.6 Thermal disinfection 26
3.2.7 Leakage test 27
3.3 Maintenance 27
3.4 Disposal 27
Table of contents
Easytop circulation regulation valve S/E with SC-Contur 3 from 27

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 manual is directed at heating and sanitary pro‐
fessionals 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
Easytop circulation regulation valve S/E with SC-Contur 4 from 27

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
Easytop circulation regulation valve S/E with SC-Contur 5 from 27

2 Product information
2.1 Standards and regulations
The following standards and regulations apply to Germany / Europe and
are provided as a support feature.
Scope / Notice Regulations applicable in Ger‐
many
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 806, part 1
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 806, part 2
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 806, part 3
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 806, part 4
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 806, part 5
Planning, execution, operation
and maintenance of potable water
installations
DIN EN 1717
Planning, execution, operation
and maintenance of potable water
installations
DIN 1988
Planning, execution, operation
and maintenance of potable water
installations
VDI/DVGW 6023
Planning, execution, operation
and maintenance of potable water
installations
Trinkwasserverordnung (TrinkwV)
Planning, execution, operation
and maintenance of potable water
installations
DVGW-Arbeitsblatt W 553
Regulations from section: Fields of application
Product information
Easytop circulation regulation valve S/E with SC-Contur 6 from 27

Scope / Notice Regulations applicable in Ger‐
many
Suitability for drinking water Trinkwasserverordnung (TrinkwV)
Scope / Notice Regulations applicable in Ger‐
many
Suitability for potable water instal‐
lations
Trinkwasserverordnung (TrinkwV)
Suitability for potable water instal‐
lations
DIN 50930-6
Requirements in plastic compo‐
nents in potable water installa‐
tions
DVGW-Arbeitsblatt W270
Scope / Notice Regulations applicable in Ger‐
many
Permitted pipe types DVGW-Arbeitsblatt W 534
Permitted copper pipes DVGW-Arbeitsblatt GW 392
Permitted copper pipes DIN EN 1057
Permitted stainless steel pipes DVGW-Arbeitsblatt GW 541
Permitted stainless steel pipes DIN EN 10312
Permitted stainless steel pipes DIN EN 10088
Scope / Notice Regulations applicable in Ger‐
many
External corrosion protection DIN EN 806-2
External corrosion protection DIN 1988-200
External corrosion protection DKI-Informationsdruck i. 160
Scope / Notice Regulations applicable in Ger‐
many
Dimensioning of circulation sys‐
tems
DVGW-Arbeitsblatt W 553
Regulations from section: Media
Regulations from section: Product description
Regulations from section: Compatible components
Regulations from section: Corrosion
Regulations from section: Installation position and settings
Product information
Easytop circulation regulation valve S/E with SC-Contur 7 from 27

Scope / Notice Regulations applicable in Ger‐
many
Leakage test for potable water
installations
DIN EN 806, part 4
Leakage test for potable water
installations
ZVSHK-Merkblatt
„Dichtheitsprüfungen von Trink‐
wasserinstallationen mit Druckluft,
Inertgas oder Wasser‟
Scope / Notice Regulations applicable in Ger‐
many
Operation and maintenance of
potable water installations
DIN EN 806-5
2.2 Intended use
Coordinate the use of the model for areas of use and media
other than those described with the Viega Service Center.
The functionality of the valve is only ensured by professional
design and assembly of the complete system.
2.2.1 Areas of use
Use is possible in the following areas among others:
nHot water circulation pipelines
nInternally and parallel laid circulation pipes
The general rules of engineering and the applicable regulations must be
observed for planning, execution, operation and maintenance of potable
water installations, see Ä „Regulations from section: Fields of applica‐
tion“ on page 6.
2.2.2 Media
The model is also suitable for the following media, amongst others:
nPotable water without limitations acc. to the applicable directives,
see Ä „Regulations from section: Media“ on page 7
nmaximum chloride concentration 250 mg/l pursuant to applicable
regulations, see Ä „Regulations from section: Media“ on page 7
Regulations from section: Leakage test
Regulations from section: Maintenance
Product information
Easytop circulation regulation valve S/E with SC-Contur 8 from 27

2.3 Product description
According to the applicable regulations, Easytop system fittings can be
used for all types of potable water and are DVGW certified, see Ä „Reg‐
ulations from section: Product description“ on page 7. Their plastic
components comply with the KTW recommendation and the require‐
ments pursuant to the applicable regulations.
2.3.1 Overview
The model is equipped as follows:
nvalve casing made of silicon bronze
ndual-sided press connection with SC-Contur
ndrain plugs for drainage valve G ¼
nregulating unit with valve cone and flexible material element
ntemperature scale for setting temperature between
40 °C and 65 °C
nintegrated ball valve
nconverter flow regulator
The model can be shut off using the integrated ball valve.
The model is available in the following dimensions:
d 15 18 22
DN 15 15 20
2.3.2 Press connection with SC-Contur
Fig. 1: Press connection using a press connector as an example
The press connection has a circumferential bead in which the sealing
element lies. The connector is deformed upstream and downstream of
the bead and permanently connected to the pipe during pressing. The
sealing element is not deformed during pressing.
Product information
Easytop circulation regulation valve S/E with SC-Contur 9 from 27

Fig. 2: SC-Contur
Viega press connectors are equipped with the SC-Contur. The SC-
Contur is a safety technology that is certified by the DVGW and ensures
that the connection is guaranteed to be leaky in an unpressed state. In
this way, unpressed connections are noticed immediately during a
leakage test.
Viega guarantees that unpressed connections are visible during a
leakage test:
nwith wet leakage test in the pressure range from 0.1 hPa–0.65 MPa
(1.0 mbar–6.5 bar)
nwith dry leakage test in the pressure range from 22 hPa–0.3 MPa
(22 mbar–3.0 bar)
2.3.3 Sealing elements
NOTICE!
Only EPDM sealing elements are approved in potable water
installations. The use of other sealing elements is not per‐
mitted.
The model is factory-fitted with EPDM sealing elements.
Area of use Potable water
Operating temperature [Tmax.]80 °C
Operating pressure [Pmax]1.0 MPa (10 bar)
Comments see notes Ä Chapter 2.2.2
„Media“ on page 8
SC-Contur
Product information
Easytop circulation regulation valve S/E with SC-Contur 10 from 27

2.3.4 Markings on components
The model is marked as follows:
nflow direction indicator
nDimension
nDVGW writing
nposition indicator for operating mode
ngreen dot for potable water
2.3.5 Compatible components
The model is equipped with press connections and compatible with the
Profipress, Sanpress and Sanpress Inox system.
The press connections are tested and approved according to the appli‐
cable regulations with the following pipe types:
nCopper pipes
– see Ä „Regulations from section: Compatible components“
on page 7
nStainless steel pipes (material 1.4401 / 1.4521)
– see Ä „Regulations from section: Compatible components“
on page 7
2.3.6 Operating mode
The valve cone of the CRV is equipped with a flexible material element.
The flexible material element reacts to changes in the temperature of
the hot water in the circulation circuit.
Difference between target and
actual value:
The CRV changes flowthrough
volume and regulates the
water temperature in this way.
Target value underrun: Valve opens.
Target value exceeded: Valve closes.
Target value and actual value
match:
Hydraulic / thermal calibration is
completed.
Pipes
Circulation regulation valve (CRV)
Product information
Easytop circulation regulation valve S/E with SC-Contur 11 from 27

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LW<N煄I>
Fig. 3: Diagram minimum flowthrough / temperature
2.3.7 Technical data
Observe the following operating conditions for the installation of the
model:
Operating temperature [Tmax] 80 °C
Operating pressure [Pmax] 1.0 MPa (10 bar)
Temperature range (settable) 40 °C up to 65 °C
Factory settings 57 °C
Product information
Easytop circulation regulation valve S/E with SC-Contur 12 from 27

L7NJOL7NJOU%L7NJO
爙Q<NCBS>
7<MNJO>
Fig. 4: Diagram operating modes / Pressure losses
Pressure loss
Product information
Easytop circulation regulation valve S/E with SC-Contur 13 from 27

Switch
position
Minimum flow‐
through&#x2029;in m3 / h
Maximum flow‐
through&#x2029;in m3 / h
I on the storey: 0.042 on the storey: 1.542
II in the riser pipe: 0.060 in the riser pipe: 1.560
t. D. thermal disinfection at 70 °C:
0.72
Fig. 5: CRV flowthrough regulation
The fllowing values are valid for kV [Δp 1000 hPa (1000 mbar)]:
Temperature
&#x2029;set‐
ting ° C
65 60 57 55 50 45 40 Flowthrough
m3/h switch I
Flowthrough
m3/h switch II
Flowthrough
temperature
65.0 60.0 57.5 55.0 50.0 45.0 40.0 0.042 0.060
60.0 57.5 55.0 52.5 47.5 42.5 37.5 0.258 0.276
57.5 55.0 52.5 50.0 45.0 40.0 35.0 0.407 0.425
55.0 52.5 50.0 47.5 42.5 37.5 32.5 0.618 0.636
52.5 50.0 47.5 45.0 40.0 35.0 30.0 0.803 0.521
50.0 47.5 45.0 42.5 37.5 32.5 27.5 1.056 1.074
47.5 45.0 42.5 40.0 35.0 30.0 25.0 1.178 1.196
45.0 42.5 40.0 37.5 32.5 27.5 22.5 1.296 1.314
42.5 40.0 37.5 35.0 30.0 25.0 20.0 1.325 1.400
40.0 37.5 35.0 32.5 27.5 22.5 - 1.497 1.497
37.5 35.0 32.5 30.0 25.0 20.0 - 1.488 1.506
35.0 32.5 30.0 27.5 22.5 - - 1.506 1.524
Setting the flowthrough regulation
Product information
Easytop circulation regulation valve S/E with SC-Contur 14 from 27

2.4 Information for use
2.4.1 Corrosion
Overground pipelines and fittings in rooms do not normally require
external corrosion protection.
There are exceptions in the following cases:
nContact with aggressive building materials such as nitrite or mate‐
rials containing ammonium
nin aggressive surroundings
If external corrosion protection is required, observe the pertinent guide‐
lines, see Ä „Regulations from section: Corrosion“ on page 7.
Easytop fittings made of gunmetal/silicon bronze are suit‐
able for all types of potable water.
The chloride concentration in the medium must not exceed
a maximum value of 250 mg/l.
This chloride is not a disinfectant, but in fact pertains to the
content in sea and table salt (sodium chloride).
2.5 Optional accessories
The following optional accessories are available:
nActuator set
nDrainage valve
nThermometer
nInsulating shell
Fig. 6: Model 1013.9 Easytop actuator set
Product information
Easytop circulation regulation valve S/E with SC-Contur 15 from 27

Fig. 7: Model 2278.8 Easytop drainage valve
Fig. 8: Model 1026.6 Easytop thermometer
Fig. 9: Model 2210.50 Easytop insulating shell
An EPS insulating shell is available for the circulation regulation valve.
The two-piece insulating shell is self-supporting and is mounted without
tools and holding grips. They close seamlessly on the front surface of
the pipeline insulation.
Product information
Easytop circulation regulation valve S/E with SC-Contur 16 from 27

3 Handling
3.1 Assembly information
3.1.1 Permitted exchange of sealing elements
Important instruction
With their material-specific qualities, sealing elements in
press connectors are adapted for use with the corre‐
sponding media and/or the areas of use of the piping sys‐
tems and are generally only certified for them.
The exchange of a sealing element is generally permitted.
The sealing element must be exchanged for a designated
spare part for the intended application Ä Chapter 2.3.3
„Sealing elements“ on page 10. The use of other sealing ele‐
ments is not permitted.
3.1.2 Mounting instructions
Do not remove the model from the packaging until immedi‐
ately before use.
System components may, in some cases, become damaged through
transportation and storage.
nCheck all parts.
nReplace damaged components.
nDo not repair damaged components.
nContaminated components may not be installed.
Observe the following when mounting:
nuse suitable tools
nflow direction indicator
nWhen tightening the connection screw fitting, counter by holding the
key surface of the valve.
Choose the place of installation so that the fitting is easy to
access and operate and the insulating shell and if applicable
the Easytop actuator set can be mounted without any prob‐
lems.
Checking system components
During assembly
Handling
Easytop circulation regulation valve S/E with SC-Contur 17 from 27

For information, refer to the instructions for use of the Profipress, San‐
press and Sanpress Inox systems.
For information, refer to the instructions for use of the Profipress, San‐
press and Sanpress Inox systems.
3.1.3 Required tools
The following tools are required for production of a press connection:
npipe cutter or a fine-toothed hacksaw
ndeburrer and coloured pen for marking
npress machine with constant pressing force
nPress jaw or press ring with corresponding hinged adapter jaw, suit‐
able for the pipe diameter and suitable profile
Fig. 10: Press jaws
Recommended Viega press machines:
nPressgun 5
nPressgun 4E / 4B
nType PT3-AH
nType PT3-H / EH
nType 2 (PT2)
nPressgun Picco
nPicco
An Allen key (size 6) is required to set the temperature.
Laying and fixing pipes
Length expansion
Press connection
Temperature setting
Handling
Easytop circulation regulation valve S/E with SC-Contur 18 from 27

An Allen key (size 5) is required to remove the drain plug.
3.2 Assembly
3.2.1 Replacing the sealing element
Do not use pointed or sharp-edged objects to remove the
sealing element. They may damage the sealing element or
the bead.
Remove the sealing element from the bead.
Insert a new, undamaged sealing element into the bead.
Ensure that the complete sealing element is in the bead.
Removal drain plugs
Removing the sealing element
Inserting the sealing element
Handling
Easytop circulation regulation valve S/E with SC-Contur 19 from 27

3.2.2 Shortening the pipes
NOTICE!
Leaky press connections due to damaged material!
Press connections can become leaky due to damaged
pipes or sealing elements.
Observe the following instructions to avoid damage to pipes
and sealing elements:
– Do not use cutting discs (angle grinders) or flame cutters
when cutting to length.
– Do not use grease or oils (e. g. cutting oil).
For information about tools, also see Ä Chapter 3.1.3 „Required
tools“ on page 18.
Cut the pipe properly using a pipe cutter or fine-toothed hacksaw.
Avoid grooves on the pipe surface.
3.2.3 Pressing the connection
NOTICE!
Leaky press connections due to pipes being too short
If two press connectors are to be mounted onto a pipe
without an interval, the pipe must not be too short. If the
pipe is not inserted up to the prescribed insertion depth in
the press connector during pressing, the connection may
become leaky.
In the case of pipes with a diameter of d 15–28 mm, the
pipe must be at least as long as the total insertion depth of
both press connectors.
Handling
Easytop circulation regulation valve S/E with SC-Contur 20 from 27