NZR WZ FW 662, Краткое руководство

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NZR – Ihr Partner für Energiemessung
Technische Änderung
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Technical details subjec
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General
The integrator unit may be operated only within the conditions outlined on the
identification plate and in the technical specifications! In the case of disregard of these
conditions the manufacturer’s responsibility is excluded. The manufacturer is not liable
for inappropriate installation and operation.
Seals may not be removed and/or only by authorized persons and country-specific - local
regulations as well as the manufacturer data must be observed! The manufacturer does
not take any responsibility for the change of the calibrated and measuring relevant
data, if the manufacturer’s seal has been broken or damaged. When using several heat
counters in an accounting unit, one should select, in the interest of a possible fair heat
consumption measurement, the same types of devices and installation positions.
Before installation
• Check the design layout data of the installation.
• The pulse value and the installation location of the flow sensor must match the values
indicated on the integrator; consult the identification plate!
• The permissible ambient temperature range in the case of the integrator is 5…55 ºC.
• The installation and project prescriptions must be observed.
• The readability of the integrator and also the identification plates must be observed.
Refers to for the meter installation
• Integrators are parameterized as standard for installation into the return flow. Special
parameterization is necessary for installation in the supply and this must be specified
on the order.
• All wiring must be installed with a minimum distance of 300 mm from heavy voltage
and high frequency cables.
• In general, the integrator should be installed away from the cooling line.
• It has to be ensured that no condensate water can run along the wiring into the integrator.
• If the danger of vibrations in the piping system exists, the integrator should be instal-
led separately on the wall.
• Installations combining mixed -> different measuring ranges.
• The recommended inlet and outflow zone of the flow sensor must be observed.
• For the flow sensors, please observe the flow direction (arrow on flow sensor).
• Radiated heat and interfering electrical fields close to the integrator must be avoided.
• The flow sensor should be installed between two shut-off valves.
• In no case the flow sensor should be isolated unless it is a floodable - waterproofed execution!
• It is recommended to flush the pipe before installing the flow sensors. This procedure
Short Manual
Radio arithmetic unit WZ FW 662
ENG