Zenner IUW Series Installation Instructions Manual

English
Installation instructions
Ultrasonic bulk water meter type IUW
Product description
Ultrasonic bulk water meter IUW type for cold
■
water up to 50 °C
Intended use
For the consumption measurement of drinking
■
water up to 50 °C
For the consumption measurement of clean
■
service water up to 50 °C
Scope of delivery
Water meter, Installation instruction(s),
■
Declaration of Conformity
Remark
This installation manual is intended for qualified
specialists only. Basic installation steps are therefore
not described. In order to ensure a proper flow mea-
surement, the measuring device must be completely
filled with water at all times.
NDC modules or pulse sensors may be retrofitted
to the installation point of the meter if required.
Retrofitting should only be carried out by qualified
specialists. It is recommended to secure the modules
against unauthorised removal with a user safeguard.
Permissible installation positions
Activating of the measuring device
Upon delivery, the display of the measuring device is
in "sleep mode". The display is activated ten seconds
after the measuring device has been filled with water.
For this purpose, the pipeline or measuring device
must be completely vented or filled with water.
The measuring device can be retrofitted with the
following NDC modules: wM-Bus, LoRaWAN®
General information
Water meters are precision devices. Protect against
■
shock and vibration. Store in a frost-free, cool and
dry location.
Suitable measures must be taken to ensure that
■
any contamination or damage is excluded during
transport to the installation location.
The IUW series has been approved with a flow
■
sensitivity class U0/D0 (no inlet or outlet section
required).
All series are not approved for measuring backflow.
■
The pipe cross-section should not be reduced or
■
extended directly in front of or behind the measur-
ing device.
Connection seals must not protrude into the pipe
■
cross-section.
Valves or other flow regulators should be installed
■
behind of the measuring device if possible.
If necessary, the measuring device should be pro-
■
tected by a filter, so that no foreign particles, such
as stones or sand, are flushed into the measuring
device and cause damage.
The measuring device must be protected against
■
pressure surges in the pipe network.
The measuring device may only be installed in a
■
frost-proof location and the ambient temperature
must not exceed +55 °C.
The measuring device should be installed, where
■
possible, at the deepest point of the pipe installa-
tion so that air bubbles are not able to form in the
measuring device and the pipe is always com-
pletely filled.
7