7
General information
Read thes e instr uction s caref ully rig ht up to the
end before starting to mount the device!
The installation has to be done by qualied professional personnel.
The cur rent laws an d regulat ions as wel l as the
genera lly recognis ed codes of pra ctice have to
be observed for installation and mounting, especia lly the P TB tec hnic al guid eline s R K 8 and
K 9 EN1434 par t 1+6 ( in Germany also AGFW
directives FW202, FW208 und FW510). The seal
must not be d estroyed other wise the vali dity of
calibration and warranty is void.
The ow sensor is preferably to be installed in
the colder pipe (for heat meters in colder line and
for for heat meters in w armer li ne) of the system.
The inst a ll at i on a n d op e r at in g in st ructi on s of t h e
calc ulato r and t he tem per atur e sens or s must b e
observed.
Caution with dircharge of hot water during the installation – scalding danger!
No unhin der ed st rai ght i nlet i n fro nt of t he mete r
or outle t behi nd the m eter ne ede d. However, for
heating systems with missing temperature mix-
ing and temperature stratication a straight pipe
length o f min. 10 x D is n ec e ss ary befo re t he installation point.
It is impo rta nt to ensure ad equate system p ressure to avoid cavitation.
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Flush the system before installation.
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Mount free of clamping, torsion and vibrations.
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Do not lay signal cables parallel to live cables.
The ow sensor IMF is a multi jet impeller meter.
The ow sensor IMF is a multi jet impeller meter.
The IM F is available in nom inal sizes 3.5 m ³/h,
6 m³/h or 10 m³/h and is used for a variety of
measurement tasks.
The IM F is maintenance f ree during it s servic e
lifetime. The ow sensor is intended for connection to a se parate ca lculator fo r heat meter s for
the optional installation in the supply or return
pipe of a heat exchanger circuit system. For
electrical connection a cable exists which can be
easily c onnect ed to the cal culator. Repairs m ay
only be carried out by the manufacturer or authorized service partners.
Note before installation
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The volume pulse input of the calculator must
be compatible to the pulse output of the IMF
(see technical data device of pulse output).
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Pulse value of calculator unit (RW) and IMF
must match (compare nameplates!).
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The installation (supply or return) of the IMF is
to be done according to the instruction on the
calculator.
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The ow sensor IMF may only be operated
with one to the connection data (see data ow
sensor / device of pulse output) compatible
calculator.
Installation flow sensor
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Close valves upstream and downstream of
the point of installation, release pressure.
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Normally this is the return (the colder pipe in
heating systems).
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Respect the installation place.
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Please observe the indication on the type
plate.
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Respect the direction of ow.
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This is indicated by an arrow on the side of
the ow sensor.
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Dismount the existing ow sensor / tting.
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Use only new sealing material, clean sealing
surfaces and check for damage.
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Install the new ow sensor in the correct
ow direction and in the correct installation
position.
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The register always has to face upwards.
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Open the valves slowly – purge and start
operation, avoid water hammers make sure
there is no leakage.
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Check the installation place for leaks.
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Make electrical connections to the calculator.