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MULTICAL®
602
60
Kamstrup
A/S
∙
Technical
Description
∙
5512
‐
931_N1_GB_11.2016
6.14.5
Surveillance, but no automatic blocking
The leak surveillance system is based on installation at a large number of private district heating customers’.
Usually, the individual utility installs and maintains the leak surveillance, integrated with the compulsory heat
metering at all district heating customers in their area. In this way, the individual private district heating customers
neither maintain the system nor perform other technical tasks in connection with the installed leak surveillance
system, and the surveillance system must not imply an increased risk of faulty blocking that may lead to frost
bursts. As a consequence of this the entire system must have a reliability that ensures operation for 12 years
without maintenance. As neither thermally nor electrically activated shut-off valves can be expected to have such
a long lifetime it will not be possible to use automatic blocking.
6.14.6
First day after reset
The first day after installation (when the meter has had no supply voltage) no infocodes will be set and no alarms
will be sent in case of calculated district heating or cold-water leak.
This limitation has been introduced to avoid wrong alarms as a result of the installation and the shortened metering
period.
The alarm function can be tested via remote communication by pressing both push buttons simultaneously, until
a ”Call” appears in the display.