16
MID - Declaration of Conformity
zelsius® C5-ISF is produced and
tested in compliance with the Euro-
pean Measuring Instruments Direc-
tive 2014/32/EU (MID). According to
this directive, devices are no longer
carrying an initial verification stamp,
but rather the year of the device’s
declaration of conformity (recogniz
-
able on the front of the device, for ex-
ample: M19=2019). The MID controls
the use of measuring device up to the
moment they are placed on the mar-
ket resp. their first putting into use.
After this, the national regulations
for devices subject to compulsory
verification apply within the EU. The
duration of initial verification validity
in Germany remains 5 years for heat
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
attached to each measuring instru-
ment. The latest information about
this product can be downloaded
from
www.zenner.com
Safety instructions
Electro-magnetic interference
zelsius® C5-ISF fulfils the national
and international requirements for
interference resistance. To avoid
malfunctions due to other interfer-
ences, do not install 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 per
-
sonnel. The current laws and regula-
tions 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 regulations 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 tem-
perature at the flow sensor may not
exceed 90 °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.
No straight lengths of pipe required.
It is important to ensure adequate sys
-
tem pressure to avoid cavitation.
With combined heat and cooling
measuring or only cooling measuring
the calculator has to be mounted on
the wall for protection of external con-
densation (for Germany and Austria:
in the case of cooling and combined
heat / cooling meters, the cooling
registers are not calibrated and may
not be used for billing purposes in
commercial transactions. For this
purpose, devices with a separate type-
examination certificate are currently
required).
All manuals and user guides at all-guides.com
