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2.4.8 Electronic control
This is a custom designed electronic controller for
heat/cooling management units. It includes all the
measurement and control circuits to drive pumps,
valves and other devices used in such
applications. It has also three communication
channels to connect it to slave devices as well as
to a main communication bus used to collect data
from the modules.
Relay outputs: 2 (2Amax at 230Vac)
Triac outputs: 5 (3Amax at 230Vac)
Analog Outputs: 1 – 0 -10Vdc, 1 – 3Vdc (20mA)
On/Off inputs: 2 (clean contact)
Sensor inputs: 4 Pt1000, 3 NTC (range 0 -100°C)
Communication channels: 1 RS485 (isolated),
1 RS485 non (isolated), 1 local bus
Power supply: 12 - 18Vdc
Max current: 250mA
Operating temperature: 5 - 60°C
2.4.9 Lime scale reducer
Lime scale has long been a major source of
trouble for domestic water supply pipes and
appliances that use hot water like washing,
machines, dish washers, steam operated irons,
kettles and so on. Many years of research
worldwide has produced evidence that lime scale
build-up can effectively be reduced by applying
electromagnetic fields around the pipe. SCALE-
OFF III is a water conditioning unit based on the
latest technology that employs high frequency
modulated pulses. It is designed to be used on
the feed of appliances that require scale
protection such as electric showers, all kind of
boilers and other water heaters. The high
frequency signals are injected into the pipe by
means of two wires, often called antennas that
are winded around the pipe. A 32 bit microprocessor generates a suitable pattern of high
frequency pulses that ‘IONIZE’ the hardness salt particles passing through the pipe. This
prevents them to stick to the pipe internal walls. Although the hardness salts are not
removed, it prevents hard scale build up.
Power supply/Power: 230Vac/3W
Power cable length: 1.5m
Operating temperature: 5 - 70°C
Humidity: Waterproof
Size: 104mm x 104mm x 58mm
Operating frequency: 1 – 10kHz
Output voltage: 18V (pulses)
Arial length: 2m each (two pieces)
Flow-rate: the greater the flow, the more effective the system is
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