Zenner ETKDI-N Manual De Montaje página 4

English
Installation instructions
Single / Multi jet meters / Cartridge meters
Product description
Apartment / residential water meter for cold water
up to 50 °C and hot water up to 90 °C (with or without
factory-fitted radio module)
Intended purpose
For measuring the consumption of cold and clean
drinking water or service water up to 50° C
For the consumption measurement of hot and unpol-
luted drinking water or service water up to 90 °C
Scope of delivery
1 water meter, 1 instruction manual, Declaration of
Conformity
1 sealing set including gaskets (only for apartment
water meters)
Comment
This installation manual is intended for qualified
specialists only. Basic installation steps are therefore
not described.
Permissible installation positions
The installation positions may differ depending on the
type or for technical approval reasons.
These are marked accordingly on the meter mask/type
plate of each water meter in accordance with DIN EN
ISO 4064.
General notes
Water meters are precision instruments. Protect
■
against shock and vibration. Store frost-free, cool
and dry.
The sealing surfaces are equipped with thread pro-
■
tection caps and thus protected from damage.
Check before starting installation:
■
–
that all sealing surfaces are plane and free of
damages such as notches, grooves or similar.
–
all indications on the dial are legible (flow rate
indications depend on the respective nominal
size).
3
–
the measuring instrument is suitable in design,
size, temperature range and pressure rating for
the installation site.
In the case of polluted water, we recommend
■
installing dirt filter in the supply line upstream of
the meter.
If possible, install the meter at the lowest point of
■
the installation and frost-proof to avoid air accu-
mulation and damage.
The water meter must be mounted free of mechan-
■
ical forces.
Water meters must be completely filled with water
■
during operation - in the case of wet-dial meters,
the register must also be filled!
The meter must be protected with appropriate
■
measures against pressure shocks in the pipeline.
If there is a risk of frost, shut off the system and
■
drain it completely (including the meter!), if neces-
sary remove the meter.
The meter must be easily accessible and readable
■
at all times, including all information on the dial.
We recommend securing the connection points
■
against unauthorised disassembly with a user safe-
guard. It should not be possible to remove or loos-
en the user safeguard without visibly damaging.
The installation has to be done by qualified profes-
■
sional personnel. We also refer to the regulations of
DIN EN ISO 4064:2017 Part 5 and DVGW Worksheets
W291 and W557.
All series have been approved with a flow sensitivi-
■
ty class U0/D0 (no inlet / outlet section required).
All series are not suitable for measuring reverse
■
flow.