Installation Instruction; Declaration Of Conformity - Zenner WSD Manual De Montaje

English
Remark:
These installation instructions are intended only for trained personnel.
Basic installation steps are therefore not described.
Permissible installation positions:
The WS series is intended for installation in the horizontal position only.
✓

Installation instruction:

■
The WS series has been approved at a flow sensitivity class U0/D0.
However, in order to achieve the best results, we recommend observing
the national regulations and accepted codes of practice.
■
For WS series is recommended a straight inlet section of at least 5xDN.
If there is no sufficient inlet section be present, or behind pipe elbows,
we recommend to use a honeycomb rectifier from ZENNER.
■
Ideally, there should be a straight outlet section distance of at least
2xDN.
■
Before installing the meter, the piping must be thoroughly flushed out.
■
The pipe diameter should not be reduced, directly in front and behind
the meter.
■
Flange gaskets must not protrude into the pipe.
■
It should be taken to ensure that the flow direction of the meter coincides
with the flow direction of the pipeline.
■
Valves or other flow regulation should be mounted as possible behind the
meter.
■
The meter should not be installed at the highest point of the pipe ins-
tallation to prevent air bubbles in the meter and the pipeline is always
completely filled.
■
The meter should be protected against dirt particles like sand or stones by
an appropriate filter.
■
The meter must be protected against pressure blows in the pipeline net-
work.
■
The maximum temperature of the measured medium must not exceed the
permissible 50°C for cold water.
■
To avoid damage of the measuring insert by pressure surges, the pipeline
must be filled slowly after installation.
■
It is important to ensure that the meter is installed free of stress in the pipe.
In a non-stress-free mounting the meter body may be damaged and water
can escape.
■
The pipeline pressure must not exceed the maximum working pressure of
the meter, as this can lead to leaks and damage of the meter.
■
To prevent the disassembly of the meter we recommend to secure the
connection interface with a safety device (adhesive label, seal, etc.)..
Installation instructions for the replacement of the metrological unit:
■
The exchange of exchangeable metrological units (measuring insert
should only be performed by trained specialist staff.
■
Before changing the measuring insert, the pipe must be rinsed carefully
shut off the pressure side and empty the pipe.
ZENNER International GmbH & Co. KG
Römerstadt 6
D-66121 Saarbrücken
Telephone +49 681 99 676-30
Telefax +49 681 99 676-3100
Technical Data WSD / WSDE
Nominal diameter DN mm
Permanent flow m³/h
Q
3
Standard measuring
R
Q /Q
range (*)
3 1
Operating pressure,
MAP/
bar
PN
max.
Pulse value Reed l/pulse 100
Pulse value
l/pulse 10
Modulator disk
Height approx. (**) mm
Installation height of
mm
the measuring unit
Weight approx. kg
(*) Other measuring ranges and overall lengths on request.
(**) Total height of WSDE + 18mm
■
The compliance of the interfaces marking (WS1) on the measuring insert
and at the specified interface (body) must be checked.
■
After disassembly of the measuring insert old gaskets / seals must be
removed. The sealing surfaces must be cleaned and checked for damage.
■
It is important to ensure that the inlet area is free of deposit, before a new
metrological unit is installed, because as these can lead to deviations of
the measurement result.
■
Use only the genuine seals, which are delivered together with the measu-
ring insert. These have to be checked prior to installation for damage and
fit.
■
When using lubricants or assembly pastes for the seals it must be ensured
that they are suitable for contact with drinking water.
■
The screws of the measuring insert crosswise tighten (M12: DN50 - DN100
= 60Nm; M20: DN150 - DN200 = 100Nm).
■
To prevent the disassembly of the replacable measuring insert, it must be
connected with the connection interface (housing) by a sealing wire.

Declaration of conformity

ZENNER International GmbH & Co. KG declares that the product with the
number of EC type-examination certificates DE-14-MI001-PTB-011 complies
with the essential requirements of the EC directive 2014/32/EU (Measuring
instrument directive). ZENNER International GmbH & Co. KG hereby decla-
res that the products for Remote Metering; complies with the application Wi-
reless Communications with the essential requirements of the EC directive
1999/5/CE (R&TTE).
The declaration of conformity and the latest information about this product
can be accessed or downloaded from
E-Mail info@zenner.com
Internet www.zenner.com
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