Hysteresis; Heat Pump Controller For Cooling; Cooling Program Description; Cooling Operating Mode - Dimplex WPR 2006 Notice De Montage Et Mise En Service

Heat Pump Controller for Cooling

9.5 Hysteresis

The so-called hysteresis for the different requests can be set in
the "Settings" menu. The hysteresis forms a "neutral zone"
around the corresponding set temperature. If the current
temperature is lower than the reduced set temperature around
the hysteresis, the request is then recognised. This request
remains pending until the current temperature exceeds the upper
limit of the neutral zone. This results in a switching cycle around
the set value.
Hysteresis of the return set temperature
A hysteresis can be set around the return set temperature for the
heating request.
10 Heat Pump Controller for Cooling

10.1 Cooling Program Description

10.1.1 Cooling Operating Mode

The cooling functions are manually activated as operating
mode 6. There is no automatic switching between heating
and cooling operation.
Switching off the generation of cold
The following limits are provided as safeguards:

10.1.2 Activation of Cooling Functions

Special regulatory functions are performed when cooling
operation is activated.
The cooling functions can fail to activate due to the following
reasons:
The external temperature is below 3 °C (danger of frost)
Neither silent or dynamic cooling was selected with "Yes" in
the settings

10.1.3 Silent and Dynamic Cooling

Different system configurations can be implemented according to
each integration diagram:
Dynamic cooling (e.g. fan convectors)
Regulation according to a fixed setpoint. Adjust the return
set temperature in the settings menu item.
Silent cooling (e.g. underfloor heating, wall panel heating
or cooled ceilings)
Regulation according to the room temperature. Regulation is
based on the temperature in the room where the room
climate control station 1 is connected according to the circuit
diagram. Set the desired room temperature in the settings
menu item.

10.2 Regulation of the Room Temperature

Heating systems are normally equipped with an automatic
mechanism for separately regulating the room temperature in
each room.
The room thermostats measure the current temperature in
heating operation. If the current temperature undershoots the set
temperature, the thermostats activate the regulating device (e.g.
actuator).
All manuals and user guides at all-guides.com
If the hysteresis is large, the heat pump will operate longer,
whereupon the temperature fluctuations in the return flow are
correspondingly large. A smaller hysteresis reduces the
compressor runtimes and the temperature fluctuations.
NOTE
For panel heating with relatively flat characteristic curves, set a
hysteresis of approx. 1 K because a hysteresis which is too large can
prevent the heat pump from switching on.
The flow temperature falls below a value of 7 °C
Activation of the dew point monitor at vulnerable points in
the cooling system
The dew point is reached with silent cooling only
In all these cases, the cooling operating mode will remain active.
However, the regulation system responds as in the summer
operating mode.
NOTE
The cooling circulating pump (M17) operates continuously in the
"Cooling" operating mode.
Combination of dynamic and silent cooling
Regulation is carried out separately in two different control
circuits.
The dynamic circuit is regulated according to a fixed setpoint
(as described for dynamic cooling).
Silent cooling is regulated on the basis of the room
temperature (as described for silent cooling) by controlling
the mixer for heating circuit 2 (silent heating and cooling
circuit).
Make selections in the menu item "Settings – Cooling".
In cooling operation, the room thermostats must be either
deactivated or replaced with units which are suitable for both
heating and cooling.
The room thermostat responds inversely in cooling operation. If
the set temperature exceeds the current temperature, the
regulating device is activated.
10.2
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