8 Operating and display functions
8
–
You can use this function to read the heating installa-
tion's operating mode.
Standby
: The heating installation does not report any energy
requirement.
Heat. mode
: The heating installation is in heating mode for
the heating circuits.
Cooling
: The heating installation is in cooling mode.
DHW
: The heating installation is in heating mode for the hot
water in the cylinder.
8.2.4
Setting the frost protection delay
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Frost protect. delay
–
You can use this function to delay activation of the frost
protection function by setting a delay time.
8.2.5
Setting the temperature threshold for
constant heating
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
OT constant heating
–
If the outside temperature is lower than or equal to the
defined temperature value, the controller regulates the
heating circuit with the set day temperature and heating
curve, even outside of the time period.
AT
≤
set temperature value: No night set-back or total shut-
down
8.2.6
Reading the software version
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Control modules
–
You can use this function to read the software versions of
the display, the heat generator and the expansion mod-
ules.
8.2.7
Activating the adaptive heating curve
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Adaptive heat curve
–
You can use this function to activate an automatic heat-
ing curve.
If you have activated this function using the set value
Yes
,
the controller automatically adjusts the heating curve. The
automatic adjustment of the heating curve is performed in
small steps. Use the
Heating curve
function to adapt the
heating curve to the building so that the
Adaptive heat.
curve
function still has to carry out the fine adjustment.
The prerequisite for this is:
–
The controller is installed in the living room.
–
Any
VR 91
remote control unit that is present has been
installed in the living room
–
The controller or, if required, the
VR 91
remote control
unit is assigned to the correct zone in the
Zone assign-
ment
function.
–
The
Thermost.
or
Temp. mod.
value is selected for the
Room temp. mod.
function.
8.2.8
Configuring the heating circuit
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Heating circuit conf.
–
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
Automatic mode
.
If the operator now uses the right-hand selection button
Op-
erating mode
to change the operating mode to
Comfort
mode
, only the operating mode for
ZONE1
is changed. For
ZONE2
,
Automatic mode
remains in place.
8.2.9
Activating automatic cooling
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Auto. cooling
–
Use this function to activate or deactivate automatic cool-
ing.
If a heat pump is connected and the
Automatic cooling
function is activated, the controller automatically switches
between heating and cooling.
8.2.10 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 13)
8.2.11 Activating the source regeneration
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Source regeneration
–
If the
Automatic cooling
function has been activated,
you can use the
Source regeneration
function.
If the
Day Away
function is activated, the controller switches
the heating and cooling off. If you also activate the
Source
regeneration
function, the controller switches the cooling
on again and ensures that the heat from the living room is
returned to the ground via the heat pump.
8.2.12 Read current room air humidity
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Curr. room air humidity
–
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.
8.2.13 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.
Installation instructions
VRC 700/2
0020200781_01
