Energy-Efficient Operation; External Temperature Dependent Heating Curve - Dimplex Wärmepumpenmanager Bedienungsanleitung

3

3 Energy-efficient operation

If heating operation is carried out on the basis of the external
temperature, the heat pump manager calculates a return set
temperature from the set heating characteristic curve and the
current external temperature.
The heating curve should be set to the maximum calculated
return temperature of the heating system. By using the buttons
 
Hotter ( and Colder ( , the heating curve can be shifted
upwards or downwards in parallel according to customer
requirements to attain the actually desired room temperatures.
Regulation via return temperature
Regulating a heat pump heating system via the return
temperature offers the following advantages:

3.1 External temperature dependent heating curve

The heating curve must be adjusted - separately for heating
circuit 1 and 2 / 3 - to suit the respective building and local
conditions so that the desired room temperature is also attained
when the external temperatures vary. If the external temperature
rises, the return set temperature is lowered, thus ensuring
energy-efficient operation of the heating system.
Make selections in the menu 
„Settings – Heating circuit 1/2/3 – Control via – External
temperature". The desired heating curve can be set in the
following menu item "Heating curve – End point".
1) In the Settings - Heating curve end point menu, the
maximum required return temperature at an external
temperature of -20 °C is entered. The aim is to attain an
average constant room temperature even if the external
temperatures vary.
Fig. 3.1:
Setting options for the heating curve
EN-16
1) Long runtimes for the heat pump, with all of the circulated
heating volume heated according to need.
2) Measuring disturbance variables in the heating system.
3) A reduction in the temperature spread at a constant return
temperature results in lower flow temperatures and thus in
more efficient operation.
NOTE
The heating curve should be set as high as necessary but as low as
possible!
2) All heating characteristic curves intersect at an external
temperature of +20 °C and a return temperature of +20 °C.
This means that at this operating point no more heat output
is required. The indicator bar (Hotter
can be used to shift the operating point between 5 °C and
30 °C along the axis marked by a slope. This shifts the entire
heating curve upwards or downwards in parallel, by a
consistent amount of 1 K per indicator bar unit. The user can
make this setting according to their individual temperature
requirements.
3) Each heating curve is limited in an upward direction by the
value set in "Settings – Heating circuit 1/2/3 – Heating curve
maximum". In the downward direction, each heating curve is
limited by the value 15 °C (air HP) or 18 °C (brine or water
HP).
 
and Colder buttons )