16
Declaration of Conformity
Some countries (e. g. Germany and
Austria) require a separate type-
examination certicate for the billing
of cooling energy (custody transfer).
The related certicate number is
inscribed at the front of the meter. In
case of combined heating and cooling
meters with double calibration, both
certicate numbers are inscribed.
MID-certicate number for heating:
DE-12-MI004-PTB010
Separate certicate number for cooling:
DE-20-M-PTB-0046
zelsius®C5-IUFisproducedandtested
in compliance with the European Mea-
suringInstrumentsDirective2014/32/
EU(MID)resp.guidelinePTBK7.2.
Accordingtothesedirectives,devices
arenolongercarryinganinitialverica-
tionstamp,butrathertheyearofthe
device’sdeclarationofconformity(rec-
ognizableonthefrontofthedevice,for
example:M22orDE-M22=2022).They
controltheuseofmeasuringdeviceup
tothemomenttheyareplacedonthe
marketresp.theirrstputtingintouse.
Aerthis,thenationalregulationsfor
devicessubjecttocompulsoryverica-
tionapplywithintheEU.Theduration
ofinitialvericationvalidityinGermany
iscurrently6yearsforthermalenergy
meters.Aerthisperiodhasexpired,
themeasuringdevicemaynolongerbe
used for billing in commercial use. The
regulationsresp.validityperiodmay
varyinothercountriesoftheEU.
Ifyouhavequestions,pleasedirect
them to info@zenner.com
Thedeclarationofconformityisat-
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-IUFfullsthenationaland
internationalrequirementsforinterfer-
enceresistance.Toavoidmalfunctions
due to other interferences, do not in-
stalluorescentlamps,switchcabinets
orelectricdevicessuchasmotorsor
pumpsintheimmediatevicinityofthe
meter.Cablesleavingthemetershould
notbelaidparalleltolivecables(230V)
(minimumdistance0.2m).
Care instructions
Clean plastic surfaces with a damp
clothonly.Donotuseanyscouringor
aggressivecleaningagents!Thedevice
ismaintenance-freeduringtheservice
life.Repairsmayonlybecarriedoutby
themanufacturerorauthorizedservice
partners.
Installation manual
Safety instructions for installation
Readtheseinstructionscarefullyright
up to the end before starting to mount
thedevice!Theinstallationhastobe
donebyqualiedprofessionalperson-
nel. The current laws and regulations
havetobeobserved,especiallythePTB
technicalguidelinesK8undK9,EN1434
part1+6,inGermanyalsoAGFWdirec-
tiveFW202,FW218,FW510andVDI
2035.AtdeviceswithM-Busthegeneral
rulesoftechnologyandtherespective
regulations for electrical installations
havetobefollowed.Caution with
discharge of hot water during the
installation – scalding danger! Do not
carrythemeterbythecables.
The maximum heating water tempera-
tureattheowsensormaynotexceed
105ºCresp.130°C.Forheatingsystems
with a lack of temperature mixing
resp.withtemperaturestratication
a straight pipeline of min. 10 x DN has
tobeprovidedupstreamofthemeter.
Theowsensoriswear-free,thereare
nomovingparts.Nostraightlengthsof
piperequired.Itisimportanttoensure
adequatesystempressuretoavoid
cavitation.
With heating water temperatures of
90 °C and more as well as combined
heatandcoolingmeasuringoronly
cooling measuring the calculator has to
be mounted on the wall for protection
of high temperatures resp. external
condensation.