16
Declaration of Conformity
Some countries (e. g. Germany and
Austria) require a separate type-
examination certificate for the billing
of cooling energy (custody transfer).
The related certificate number is
inscribed at the front of the meter. In
case of combined heating and cooling
meters with double calibration, both
certificate numbers are inscribed.
MID-certicate number for heating:
DE-12-MI004-PTB010
Separate certificate number for cooling:
DE-20-M-PTB-0046
zelsius® C5-IUF is produced and tested
in compliance with the European Mea-
suring Instruments Directive 2014/32/
EU (MID) resp. guideline PTB K 7.2.
According to these directives, devices
are no longer carrying an initial verifica
-
tion stamp, but rather the year of the
device’s declaration of conformity (rec
-
ognizable on the front of the device, for
example: M20 or DE-M 20 = 2020). They
control the use of measuring device up
to the moment they are placed on the
market resp. their first putting into use.
After this, the national regulations for
devices subject to compulsory verifica
-
tion apply within the EU. The duration
of initial verification validity in Germany
remains 5 years for thermal energy
meters. After this period has expired,
the measuring device may no longer be
used for billing in commercial use. The
regulations resp. validity period may
vary in other countries of the EU.
If you have questions, please direct
them to
The declaration of conformity is at-
tached to each measuring instrument.
The latest information about this prod-
uct can be downloaded from
www.
zenner.com
Safety instructions
Electro-magnetic interference
zelsius® C5-IUF fulfils the national and
international requirements for interfer
-
ence resistance. To avoid malfunctions
due to other interferences, do not in-
stall fluorescent lamps, switch cabinets
or electric devices such as motors or
pumps in the immediate vicinity of the
meter. Cables leaving the meter should
not be laid parallel to live cables (230 V)
(minimum distance 0.2 m).
Care instructions
Clean plastic surfaces with a damp
cloth only. Do not use any scouring or
aggressive cleaning agents! The device
is maintenance-free during the service
life. Repairs may only be carried out by
the manufacturer or authorized service
partners.
Installation manual
Safety instructions for installation
Read these instructions carefully right
up to the end before starting to mount
the device! The installation has to be
done by qualified professional person
-
nel. The current laws and regulations
have to be observed, especially the PTB
technical guidelines K8 und K9, EN1434
part 1+6, (in Germany also AGFW
directive FW202, FW510 and FW218). At
devices with M-Bus the general rules of
technology and the respective regula-
tions for electrical installations have to
be followed.
Caution with discharge
of hot water during the installation
– scalding danger!
Do not carry the
meter by the cables.
The maximum heating water tempera-
ture at the flow sensor may not exceed
105 ºC resp. 130 °C. For heating systems
with a lack of temperature mixing
resp. with temperature stratification
a straight pipeline of min. 10 x DN has
to be provided upstream of the meter.
The flow sensor is wear-free, there are
no moving parts. No straight lengths of
pipe required. It is important to ensure
adequate system pressure to avoid
cavitation.
With heating water temperatures of
90 °C and more as well as combined
heat and cooling measuring or only
cooling measuring the calculator has to
be mounted on the wall for protection
of high temperatures resp. external
condensation.
Summary of Contents for zelsius C5 -IUF
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