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Elster Messtechnik GmbH, Otto-Hahn-Straße 25, 68623 Lampertheim
Tel: +49 (0) 6206 933 0, Fax: +49 (0) 6206 933 100, www.elstermesstechnik.com
Artikel-Nr. 0080141141 - 2011-03-02 (F90S_M_09.01e/03.11)
Compact single-jet heat meter
F90S
Installation and Operating Instructions
3 General Information
• The valid standard for the application of heat meters is EN 1434,
parts 1 + 6. The regulations for electrical installations are to be
observed.
• The product meets the requirements relating to emissions in the
European Council Directive on EMC 2004/108/EC.
• The measurement stability of the heat meters is only guaranteed
when the quality of the water meets the conditions as speci
fi
ed
in the AGFW Recommendation FW-510.
In the case that the
compostion or consistency of the water deviates from these
requirements, the heat meters must be inspected and refurbished
regularly by the manufacturer.
• The instrument identi
fi
cation and the seals must not be damaged
or removed – otherwise the guarantee and the approved
application of the instrument no longer apply.
• The heat meter left the factory in conformance with all applicable
safety regulations. All maintenance and repair work is to be carried
out only by quali
fi
ed and authorized technical personnel.
• The direct-mounted temperature sensor or the plug on the
temperature sensor installation point may not be altered in any
way, in particular the sealing wire must not be removed.
• The instrument must be stored and transported at above-freezing
temperatures. The storage and/or ambient temperature must not
fall below 5°C.
• All details and speci
fi
cations listed on the data sheet of the heat
meter must be adhered to.
• All electrical connections must be laid at a
minimum distance of
50 cm
to sources of electromagnetic interference (switches,
controllers, pumps, etc.). All instrument connections must be laid
at a
minimum distance of 10 cm
to other current-carrying wires.
• The temperature sensor cables must not be kinked, rolled up,
lengthened or shortened.
• Instruments with a return-
fl
ow temperature sensor mounted
directly in the
fl
ow sensor may only be mounted in the return
fl
ow.
4 Mounting the Flow Sensor
• To protect against damage and dirt the heat meter should only be
removed from the packaging directly before installation.
• For meters with two declarations on the identi
fi
cation plate, such
as:
Q
≥
100l/h
∆
T: 3-100 K / Q
≥
20l/h
∆
T: 6-100 K
the declaration
that is not valid for the local installation situation must be made
unrecognizable;
for example, for
fl
oor heating:
Q
≥
100l/h
∆
T: 3-100 K / Q
≥
20l/h
∆
T: 6-100 K
for example, for radiator heating:
Q
≥
100l/h
∆
T: 3-100 K / Q
≥
20l/h
∆
T: 6-100 K
• To clean the heat meter (only if necessary) use a slightly moist
(not dripping wet!) cloth.
• If more than one heat meter is installed in one unit, care must
be taken to ensure that all the meters have the same installation
conditions.
• Pay attention to the installation point of the heat meter:
standard: in the return
fl
ow pipe
optional: in the forward
fl
ow pipe (state when ordering)
1 Application and Function
This single-jet compact heat meter
F90S
type ESH is designed
for measurement of the consumed heat energy in a closed heating
system.
2 Scope of Delivery
1.
Heat meter, consisting of a calculator,
fl
ow sensor and two
temperature sensors, all permanently connected to each
other.
2. Installation
kit
3.
Installation kit wall support (only F90S separable version)
4.
Installation and Operating Instructions
–
Flush the pipes according to DIN/EN
–
Close the shut-off valves
–
Open the nearest draining valve for pressure release and drain
the closed-off pipe section.
–
Loosen the coupling ring and remove the old heat meter
–
Remove all old gaskets
–
Clean the sealing surfaces
–
Insert new gaskets
–
Position the
fl
ow sensor correctly, taking into account the
direction of
fl
ow (arrow on the side of the
fl
ow sensor)!
–
Tighten the coupling rings
–
Rotate the calculator into the correct reading position.
Note:
In order to simplify mounting in narrow
installation spaces the calculator can be
detached from the
fl
ow sensor.
Only for the separable version.
To detach the calculator, press on the
lateral surfaces shown in the illustration
and carefully lift off the top part of the
housing.
6 Start of Operation
•
Slowly open the shut-off valves
•
Check that the meter is functioning properly and that there are
no leaks
After con
fi
rming that the heat meter is functioning properly, insert
and tighten the sealing wires for the temperature sensors and the
fl
ow sensor itself.
When replacing a meter at the end of a veri
fi
cation period note the
meter readings and the serial numbers of the old and new meters.
Check the following points:
• Is the heat meter of the right size?
• Are the shut-off valves open?
• Is the heating system clear (dirt
fi
lters not clogged?)
• Are the temperature sensors and the
fl
ow sensor sealed (against
manipulation)?
• Is the directional arrow on the
fl
ow sensor in the correct
direction?
• Is a
fl
ow volume displayed?
• Is a plausible temperature difference displayed?
• For instruments with two external temperature sensors, is the
forward
fl
ow sensor (red) in the forward
fl
ow and the return
fl
ow
sensor (blue) in return
fl
ow pipe?
• For instruments with an integrated return
fl
ow temperature
sensor, check the
fl
ow sensor is installed in the return
fl
ow.