Zenner RTKD, Installation Instructions Manual

2

English

Installation instructions

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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.  S

crew 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, 

we recommend the use of a water meter instal

-

lation bracket (WZAG).

■

 Recommended tightening torque for the con-

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

.

General notes

■

 Water meters are precision instruments. Protect 

against  shock and vibration. Store frost-free.

■

 The sealing surfaces are equipped with thread 

protection caps and thus protected from 

damage.

■

Check before beginning the installation:

–

 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 

installation position on the dial.

■

 By polluted or loaded water we recommend to 

install filters or strainers in the inlet upstream of 

the meter.

■

 The meter should always be installed at the 

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 

pipeline being free of any of mechanical forces 

or tensions.

■

 During the operating process water meter has to 

becompletely filled with water.

■

 The meter has to be protected with appropri-

ate measures against pressure shocks in the 

pipeline.

■

 By risk of frost, empty completely and shut off 

the installation (including the meter), if necessa-

ry, dismount the meter.

■

 The meter has always to be easily accessible and 

legible, including all indications on the marking 

ring or dial.

■

 We recommend to ensure installation points on 

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 

personnel.

RTKD/RTKD-L/RTKDE/RTKDE-L/RNK-RP-N/RNK-L-RP-N/RTKP