7
ENG
3.2 Controller SDS 230 V 1~
1
3
4
2
5
6
7
3.3 Working principle
M
H
E
K
F
G
A
B
C
D
I
J
•
If the temperature in a closed heating system or in a
climate control system (K) changes, the volume of the
operating water changes.
•
As a result the water level in the water compartment
•
(A) of the automat (D) changes.
•
This results in a pressure difference in the gas
compartment (C).
•
The pressure sensor (G) records the pressure of the
gas in the gas compartment and transmits the actual
pressure value to the control unit (H).
•
The control unit compares the measured value with the
programmed nominal value.
•
If necessary the compressor (I) or pressure maintaining
solenoid (F) will be activated.
•
The level sensor (E) is installed to monitor the amount of
operating water in the automat.
No. Name
1
Operating panel, graphic display, LED error
display, Selector switch (click and roll).
2
Main switch. ON, glows red.
3
Pico fuse F1, Motor 1, T16A 250 V.
4
Pico fuse F2, Valve 1.1 and 2, T16A 250 V.
5
Serial no. of controller (Menu E2a 1).
6
Terminal strip, feed, inputs and outputs.
7
Serial interface, RS485
