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MW-MD
Date of Issue: 08/03
2013
Issue Number: 5.3
© 2012 Sontay Limited. All rights reserved
General Information:
Initial verification
The MW-MD is produced and tested in compliance with the new European measuring instruments directive (MID). According to this
directive, devices do no longer carry an initial verification stamp, but rather the year of the device’s declaration of conformity
(recognizable on the front of the device, for example: M09). The MID controls the use of heat meters up to the moment they are placed
on the market resp. their first putting into use. After this, the national regulations for devices subject to legal verification apply within
the EU.
The duration of initial verification validity in Germany remains 5 years for heat meters. After this period has expired, the measuring
device may no longer be used for billing in commercial use. The regulations resp. validity period may vary in other countries of the EU.
Electro-magnetic interference
The MW-MD fulfils the national and international requirements for interference resistance. To avoid malfunctions due to other
interferences, do not install fluorescent lamps, switch cabinets or electric devices such as motors or pumps in the immediate vicinity of
the meter (minimum distance 1m). Cables leaving the meter should not be laid parallel to live cables (230V, minimum distance 0.2 m).
Care instructions
Clean plastic surfaces with a damp cloth only. Do not use any scouring or aggressive cleaning agents!
The device is maintenance-free during the service life. Repairs can only be made by the manufacturer.
Declaration of Conformity
Sontay Ltd declares that this product with the number of the EC type examination certificate DE-08-MI004-PTB012 complies with the
requirements of the EC directives 2004/22/EC (Measuring instruments directive) and 89/336/ EEC (electro-magnetic compatibility).
Safety instructions
The installation has to be done by qualified personnel. Read the instructions carefully right up to the end before starting to mount the
device.
The current laws and regulations have to be observed, especially EN 1434 part 1+6.
At devices with communication interfaces or mains supply the general technical rules and the correspondent regulations have to be
followed.
While demounting flow sensors and temperature sensors care should be taken to ensure that no heating water escapes from the pipe –
this can cause burns!
Close valves and release pressure before installation.
Take care of:
The display must readable at all times, to avoid malfunctions due to other interferences do not install fluorescent lamps, switch
cabinets or electric devices such as motors or pumps in the immediate vicinity of the meter (minimum distance 1 m).
All welding must be finished.
The ambient temperature must not exceed 55°C.
The type of temperature sensor must correspond with the calculator.
The pulse value of the flow sensor must correspond with the one from the calculator.
The calculator has 7 screwed cable glands for wires with a diameter between 4.2 and 10 mm. Keep unused glands closed.
Mind the connection order: temperature sensors first, flow sensor afterwards!
The MW-MD is delivered ready for operation. It does not need any settings or adjustment.
Installation:
