Zenner RTKD Manuel D'installation page 2

English
Installation instructions
RTKD/RTKD-L/RTKDE/RTKDE-L/RNK-RP-N/RNK-L-RP-N/RTKP
General notes
Water meters are precision instruments. Protect
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against shock and vibration. Store frost-free.
The sealing surfaces are equipped with thread
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protection caps and thus protected from
damage.
Check before beginning the installation:
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–
sealing surfaces have to be flat and free from
damage such as notches, grooves, etc.
–
all of indication marks on the roller dial have to
be readable (Data regarding the flow rates are
depending on the respective nominal size)
–
meter has to fit in type, size, temperature and
pres-sure rating to the installation and meter-
ing point
Please pay attention to the information on
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installation position on the dial.
By polluted or loaded water we recommend to
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install filters or strainers in the inlet upstream of
the meter.
The meter should always be installed at the
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lowest possible point of the piping as well as
frost protected to prevent the accumulation of
air and damages.
The water meter has to be installed into the
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pipeline being free of any of mechanical forces
or tensions.
During the operating process water meter has to
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becompletely filled with water.
The meter has to be protected with appropri-
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ate measures against pressure shocks in the
pipeline.
By risk of frost, empty completely and shut off
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the installation (including the meter), if necessa-
ry, dismount the meter.
The meter has always to be easily accessible and
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legible, including all indications on the marking
ring or dial.
We recommend to ensure installation points on
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the pipeline with a seal against unauthorized
dismounting. The seal should not be removable
or loosened without visible damage.
The installation has to be carry out by qualified
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personnel.
ZENNER International GmbH & Co. KG
Römerstadt 6 | 66121 Saarbrücken | Germany
Phone +49 681 99 676-30
Fax +49 681 99 676-3100
E-Mail info@zenner.com
Internet www.zenner.com
Installation:
1. Read this instruction carefully right up to the end!
2. Close stop valves upstream and downstream the
meter.
3. Discharge pressure at the installation point.
4. Dismantle existing meters or adjusting piece.
5. Use only new and flawless sealing material.
6. Check the sealing surface for damage.
7. Pay attention to correct flow direction while
installing. Ensure that during the installation
process the gaskets do not slip, do not fall out, or
are damaged.
8. Installation position:
–
RNK-RP-N / RNK-L-RP-N:
any installation position possible
–
RTKD / RTKDE / RTKD-L / RTKDE-L / RTKP:
any installation position possible except overhead
9. Screw the connection nuts and tighten them.
10. Open vales carefully to avoid pressure shocks.
11. Check installation point for leak tightness. The
roller dial and conformity /metrology indication
marks have to be visible and readable at any
time.
Additional instructions for installation of plastic
meter:
In order to guarantee a stress-free installation,
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we recommend the use of a water meter instal-
lation bracket (WZAG).
Recommended tightening torque for the con-
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nectors: min. 20Nm up to max. 30Nm.
The declaration of conformity is included in the
delivery. This and the latest information about the
product can also be found at www.zenner.com.
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