3. Applications
In a modern heating, cooling and domestic hot water
supply system there are different circuits in which UPM3
pumps in different versions can be placed. A
differentiation must be made between the heating (or
cooling) production and the distribution.
On the production side there are some applications where
pumps are used in primary or internal circuits e.g. for
geothermal or solar thermal brine circuits.
The distribution side is often split into two circuits - a
primary and a secondary circuit - in order to keep the flow
and temperature independent from each other. A heat
exchanger, a hydraulic separator or a buffer tank can be
used for this separation.
For some heating generators (e.g. condensing boilers,
heat pumps or district heating) it is important to keep the
return temperature as low as possible. Therefore it is
necessary to keep the right balance between flow in
primary and secondary circuits. Without separator, the
primary pump creates a differential pressure in the
secondary circuits. A generator effect can happen in the
secondary pump, from which UPM3 is protected.
The primary pump is mostly integrated into the heating
appliance and controlled via a digital signal (e.g. PWM) to
ensure the optimum operation of the boiler, for instance.
TM072331
Complete domestic heating system combined with renewable energy sources
Pos. Description
1 Solar charging kit
2 Geothermal heat pump
3 Solid fuel boiler
4 Gas fuel boiler
Pos. Description
5 Freshwater station
6 Heating kit
7 Underfloor heating kit
UPM3
3
6
Applications
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