Operating and display functions 8
0020237057_00 Installation instructions 13
– You can use this function to define the zones on which
you want the settings for the operating mode and desired
temperature from the operator level to take effect.
Example: Two zones are connected and you set ZONE1. For
both zones, use the left-hand selection button Menu → Basic
settings → Operating mode to activate the Heating → Auto
operating mode. If the operator now uses the right-hand se-
lection button Op. mode to change the operating mode to
Day, the operating mode is changed only for ZONE1. The
Auto operating mode remains in place for ZONE2.
8.3.9 Activating automatic cooling
Menu → Installer level → System configuration → [System
----] → Automatic cooling
– Use this function to activate or deactivate automatic cool-
ing.
If a heat pump is connected and the Automatic cooling
function has been activated, the controller automatically
switches between heating and cooling.
8.3.10 Setting the cooling start temperature
Menu → Installer level → System configuration → [System
----] → Start OT cooling
– You can use this function to set the cooling start tem-
perature. If the outside temperature is greater than the
cooling start temperature that is set, cooling mode is pos-
sible.
Activating Cooling possible (→ Page 18)
8.3.11 Activating Source regeneration
Menu → Installer level → System configuration → [System
----] → Source regeneration
– If the Automatic cooling function is activated, you can
use the Source regeneration function.
When the Days away from home scheduling function is
activated, the controller switches the heating and cooling off.
If you also activate the Source regeneration function, the
controller switches the cooling back on and ensures that the
heat from the living area is returned to the ground via the
heat pump.
8.3.12 Read current room air humidity
Menu → Installer level → System configuration → [System
----] → Current room air hum.
– You can use this function to read the current room air
humidity. The room air humidity sensor is installed in the
controller.
The function is activated only if the controller is installed in
the living room.
8.3.13 Reading the current dew point
Menu → Installer level → System configuration → [System
----] → Current dew point
– You can use this function to read the current dew point.
The current dew point is calculated from the current room
temperature and room air humidity. The controller obtains
the values for calculating the current dew point from the
room temperature sensor and room air humidity sensor.
To do this, the controller must be installed in the living area
and assigned to a zone. The thermostat function must be
activated.
8.3.14 Defining the hybrid manager
Menu → Installer level → System configuration → [System
----] → Hybrid manager
– You can use this function to determine the hybrid man-
ager with which the heating installation should be con-
trolled.
The hybrid heat pump always works with the triVAI function,
meaning that the Hybrid manager function does not appear
as a list point in the display.
triVAI: The price-oriented hybrid manager picks the heat
generator on the basis of the rates set in relation to the
energy requirement.
Biv. point: The bivalence point hybrid manager picks the
heat generator on the basis of the outside temperature.
8.3.15 Setting the heating bivalence point
Menu → Installer level → System configuration → [System
----] → Heat. bivalence point
– If the bivalence point is selected for the Hybrid manager
function, you can then use the Heat. bivalence point
function.
When outside temperatures are low, an auxiliary heater
helps the heat pump to generate the energy required. You
can use this function to set the outside temperature above
which the auxiliary heater remains switched off.
8.3.16 Setting the hot water bivalence point
Menu → Installer level → System configuration → [System
----] → DHW bivalence point
– When outside temperatures are low, an auxiliary heater
helps the heat pump to generate the energy required for
hot water generation. You can use this function to set the
outside temperature below which the auxiliary heater is
enabled.
Irrespective of the affected setting, the auxiliary heater for
the Anti-legionella function is activated.
8.3.17 Setting the alternative point
Menu → Installer level → System configuration → [System
----] → Alternative point
– If the bivalence point is selected for the Hybrid manager
function, you can then use the Alternative point func-
tion.
The function represents the alternative point. When the out-
side temperature lies below the set temperature value, the
controller always switches the heat pump off and the auxili-
ary heater creates the required energy in heating mode.
8.3.18 Setting the limp home mode temperature
Menu → Installer level → System configuration → [System
----] → T. emergency mode
– If a heat pump is connected, you can use the T. emer-
gency mode function.
