7 Operating and display functions
14 Installation instructions 0020237057_01
7.4.2 Configuring the inputs and outputs of the
VR 71
Menu → Installer level → System configuration [System
diagram configuration ----] → Config.: VR71
– You can use this function to configure which inputs and
outputs you can use and which functions the inputs and
outputs have.
Each configuration has a unique setting value, which you
need to enter in the Config.: VR71 function. You can find the
set value and the terminal assignment for the selected basic
system diagram in the basic diagram book.
Connecting the sensors to VR 71 (→ Page 37)
Connecting the actuators to VR 71 (→ Page 37)
7.4.3 Configuring the inputs and outputs of the
VR 70
Menu → Installer level → System configuration [System
diagram configuration ----] → Config.: VR70 addr. 1
– You can use this function to configure which inputs and
outputs you can use and which functions the inputs and
outputs have.
Each configuration has a unique set value, which you need
to enter in the Config.: VR70 addr. 1 function. You can find
the set value and the terminal assignment for the selected
basic system diagram in the basic diagram book.
Connecting the actuators and sensors to VR 70 (→ Page 36)
7.4.4 Configuring the VR 70's multi-function
output
Menu → Installer level → System configuration [System
diagram configuration ----] → MA VR70, addr. 1
– You can use this function to set which functions are to be
assigned to the multi-function output.
Connecting the actuators and sensors to VR 70 (→ Page 36)
If you have set configuration 3 (Config.: VR70 addr. 1) for
the VR 70, you cannot set Charg.pump or Leg. pump.
The MA VR70, addr. 1 function does not appear on the
display if the functions of the multi-function output have been
defined by the system configuration.
7.4.5 Configuring the VR 71's multi-function
output
Menu → Installer level → System configuration [System
diagram configuration ----] → MA VR71
– You can use this function to set which functions are to be
assigned to the multi-function output.
Connecting the sensors to VR 71 (→ Page 37)
Connecting the actuators to VR 71 (→ Page 37)
If you have set configuration 3 (Config.: VR71) for the
VR 71, you cannot set TD con.. For configuration 6, you
cannot set Charg.pump, Leg. pump or TD con..
The MA VR71 function does not appear in the display if the
functions of the multi-function output have been set by the
system configuration.
7.5 Additional module
7.5.1 Configuring the multi-function output
Menu → Installer level → System configuration [Addi-
tional module ----] → Multi-funct. output 2
– You can use the multi-function output 2 to control the
circulation pump, dehumidifier or legionella protection
pump.
Depending on the system diagram specified, multi-function
output 2 is specified with a single function, or you can set a
function from a selection of two or three.
7.5.2 Setting the auxiliary heater output
Menu → Installer level → System configuration [Addi-
tional module ----] → Aux. heater output
– If you have connected an aroTHERM, you can use this
function Aux. heater output. You can use this function
to set the level (max. output) at which the auxiliary heater
should work when heat is required.
You can operate the auxiliary heater at three different levels
(outputs).
7.5.3 Configuring the multi-function input
Menu → Installer level → System configuration [Addi-
tional module ----] → Multi-funct. Input
– If a heat pump is connected, you can use the Multi-
funct. Input function. The system control requests the
heat pump's input for this purpose.
– aroTHERM input: ME of the VWZ-AI additional module
– flexoTHERM input: X41, terminal in the functional draw-
ing
If there is a signal at the input of the heat pump, the following
functionalities are possible.
Not conn.: The system control does not activate any func-
tions. The system control ignores the signal present.
Circ. boost: The end user has pressed the circulation but-
ton. The system control activates the circulation pump for a
short time period.
PV: The connected photovoltaic installation generates sur-
plus current, which is intended to be used for the heating in-
stallation. The system control activates the Cylinder boost
function once. If the signal remains at the input, the system
control activates the charging of the buffer cylinder in the
heating circuit. This means that the buffer cylinder is charged
to the flow temperature and Setting the offset for the buffer
cylinder (→ Page 13) until the signal at the input of the heat
pump falls away again.
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