Elster F90S Installation And Operating Instructions

Compact single-jet heat meter
Installation and Operating Instructions
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
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 specifi ed
in the AGFW Recommendation FW-510.
compostion or consistency of the water deviates from these
requirements, the heat meters must be inspected and refurbished
regularly by the manufacturer.
• The instrument identifi 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 qualifi 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 specifi 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.
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)
F90S
In the case that the
• 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 identifi 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)
4 Mounting the Flow Sensor
– 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 confi 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 verifi 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.
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