Dhw Tapping Recognition With A Flow Switch - Samson TROVIS 5757-3 Configuration Manual

Functions and parameters
Operation with a DHW sensor
A Pt 1000 temperature sensor (e.g. Type 5207-0060, ideally combined with a sensor pocket
to provide the best positioning of the sensor at the heat exchanger) measures the DHW tem-
perature at the heat exchanger. The measured temperature is compared with the set point
and the valve is moved accordingly to achieve this temperature (see above).
Operation with a current input
As an alternative to a flow sensor, the input of the current flow temperature can be also be
implemented by the current input (0 to 20 mA or 4 to 20 mA). The input signal is based on
the measuring range (Xmin to Xmax). The measured DHW temperature is compared with the
set point and the valve is moved accordingly to achieve this temperature (see above).
NOTICE
!
The function to maintain the water temperature at a constant temperature (see section 2.3)
cannot be used when the current input is active.
Functions
F05: Current input
F06: Function of current input
F07: Measuring range of current input
Parameters
P03: Lower measuring range value Xmin
P04: Upper measuring range value Xmax
2.1.1

DHW tapping recognition with a flow switch

The flow switch is used to indicate when DHW tapping is starts and finishes. A closed contact
causes the pump to start running (the DHW temperature control at the DHW sensor is active).
An open contact causes the valve to close and the pump to be switched off.
Functions
F01: DHW tapping recognition
F02: Flow rate sensor
6
WE Configuration
0 F05 - 1
0 F06 - 0
0 F07 - 0: 0 to 20 mA
F07 - 1: 4 to 20 mA
WE Value range
0 °C –50 to 90 °C
100 °C 10 to 150 °C
WE Configuration
1 F01 - 1
1 F02 - 0
KH 5757 EN