General Information - Zenner IMF Instrucciones De Montaje

EN

General information

Read these instructions carefully right up to the
end before starting to mount the device!
The installation has to be done by qualified pro-
fessional personnel.
The current laws and regulations as well as the
generally recognised codes of practice have to
be observed for installation and mounting, espe-
cially EN1434 part 1+6 (in Germany also AGFW
directives FW202 and FW510).
The seal must not be destroyed otherwise the
validity of calibration and warranty is void.
The flow sensor is preferably to be installed in
the colder pipe (for heat meters in the return) of
the system. The installation and operating ins-
tructions of the calculator and the temperature
sensors must be observed.
Caution with dircharge of hot water during the in-
stallation – scalding danger!
No unhindered straight inlet in front of the meter
or outlet behind the meter needed.
However, for heating systems with missing tem-
perature mixing and temperature stratification a
straight pipe length of min. 10xD is necessary
before the installation point.
It is important to ensure adequate system pres-
sure to avoid cavitation.
■
Flush the system before installation.
■
Mount free of clamping, torsion and vibrations.
■
Do not lay signal cables parallel to live cables.
The flow sensor IMF is a multi jet impeller me-
ter. It meets the requirements of the European
Measuring Instruments Directive (MID).
The IMF is available in nominal sizes 3.5 m³ / h,
6 m³ / h or 10 m³ / h and is used for a variety of
measurement tasks.
The IMF is maintenance free during its service
lifetime.
The flow sensor is intended for connection to a
separate calculator for heat meters for the op-
tional installation in the supply or return pipe of
a heat exchanger circuit system. For electrical
connection a cable exists which can be easily
connected to the calculator.
Repairs may only be carried out by the manufac-
turer or authorized service partners.
Note before installation
■
The volume pulse input of the calculator must
be compatible to the pulse output of the IMF
(see technical data device of pulse output).
■ Pulse value of calculator unit (RW) and IMF
must match (compare nameplates!).
■
The installation (supply or return) of the IMF is
to be done according to the instruction on the
calculator.
■
The flow sensor IMF may only be operated
with one to the connection data (see data flow
sensor / device of pulse output) compatible
calculator.
Installation Flow sensor
■
Close valves upstream and downstream of the
point of installation, release pressure.
■
Dismount the existing flow sensor / fitting.
■
Use only new sealing material, clean sealing
surfaces and check for damage.
■
Install the new flow sensor in the correct flow
direction and in the correct installation positi-
on. The register always has to face upwards.
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