STIEBEL ELTRON STE, Commissioning Manual

Page: 44 / 52

COmmISSIONING
Controller menu
44 | STE www.stiebel-eltron.com
„
Building management system (BMS)
„ Activate BMS
„ Modbus mode
„ Address
„ Baud rate
„ Parity
„ Port number
Parameter
Number of stop bits
The heat pump can be monitored and controlled via a Modbus.
The heat pump sends data to the Modbus on request.
„ Activate BMS
f f Activate or deactivate the function.
When the function is activated, there is a higher ranking control
unit.
„
Modbus mode
f f
Set how communication with the higher ranking control unit
takes place.
RTU
Communication takes place directly via an external Modbus.
TCP
Communication takes place via a router at the RJ45 connector for
the heat pump.
„
Address
Can only be adjusted if the “RTU” Modbus mode is selected.
f f Set the correct address.
„ Baud rate
Can only be adjusted if the “RTU” Modbus mode is selected.
f f Set the speed, at which the data should be transferred.
„ Parity
Can only be adjusted if the “RTU” Modbus mode is selected.
f f
Set the required parity.
„ Port number
Can only be adjusted if the “TCP” Modbus mode is selected.
„
Buffer cylinder
„ Activate buffer cylinder mixer circuit control
„ Heat pump connected to cylinder
„ Buffer cylinder temperature, automatic mode
„ Required buffer temperature
„ Buffer cylinder overcharge
„ Booster heater increase
„ Booster heater max. application limit
„ Buffer cylinder configuration
„ Heat pump start offset
„ Booster heater start offset
„ Summer mode permissible
Parameter Unit
Buffer cylinder temperature °C
Current temperature in buffer cylinder
System flow °C
Current temperature in system flow
„ Activate buffer cylinder mixer circuit control
f f Activate or deactivate the function.
When the function is activated, there is a buffer cylinder with
mixer circuit control in the heating system.
The mixer circuit controller must be set lower than heating cir-
cuit 1, otherwise it will be purely mixer circuit control.
„ Heat pump connected to cylinder
„ Buffer cylinder temperature, automatic mode
Can only be activated if the “Activate buffer cylinder mixer circuit
control” function is switched on.
f f Activate or deactivate the function.
When this function is activated, the appliance automatically regu-
lates the set mixer circuit temperature under consideration of the
“Buffer cylinder overcharge”.
„ Required buffer temperature
Can only be adjusted if the “Buffer cylinder temperature, auto-
matic mode” function is deactivated.
f f
Set the required DHW temperature for the cylinder capacity.
„
Buffer cylinder overcharge
Can only be adjusted if the “Buffer cylinder temperature, auto-
matic mode” function is activated.
f f
Set the temperature deviation to which the buffer cylinder
should be heated.
The overcharge is an increase of the set mixer circuit temperature
and is therefore an offset value for the mixer circuit.