KT-Elektronik SOL3-3, Installation And Owner'S Manual, Page: 52 / 88

Installation and operating manual KT-Elektronik
7.6 Temperature difference controller
To applicate a raise return flow temperature of a seperate heating circuit, to realize tank-
to-tank transfer or to charge or discharge of heating energy there is designed one
additional temperture diffrence controller inside.
The temperature sensors used for this function may be used additionally to the defined
function in the chosen system variant (example: storage tank temperature sensors SF1
and SF2).
The relay output is fixed to terminal number 27 (UP). This define requires that the
additionally temperature difference controller is not available in system variants including
heating circuit.
Settings
Functions FS Configuration
Temperature difference control
(TDR) 0 CO3 -> F10 – 0 Off (1 On)
Function block parameter FS Range
Temperature difference set point
10K -30...+160 °C
Reference input
2 Terminal number 1...9
Controlled input
7 Terminal number 1...9
The facrory default setting of these parameteres is designated to use raise return flow
temperature of a seperate heating circuit.
Function
The switching relay output terminal number 27 (UP) becomes active, if the difference of
reference input and controlled input exeeds the temperature difference set point.
The switching relay output terminal number 27 (UP) becomes inactive, if the difference of
reference input and controlled input falls below the temperature difference set point.
The hysteresis is fixed to +/- 2 Kelvin.
In the information level sensors (reference input and controlled input) where shown
each with the terminal defined symbols. The switching output visualizes the symbol
(responsible für circuit 1 mixing valve up signal).
In “Manual operating mode” the switching output may be modified when shown the
indication 'TdS'.
52
EB_37383_SOL3-3_EN002