User Manual

12
MAINTENANCE
Before and during the heating season it is necessary to inspect the condition of cables inside EU-427i controller.
Additionally, the controller fasteners needs to be checked and the controller should be cleaned to remove dust
and other dirt. Also the efficiency of motor earthing should be measured.
Technical parameters of EU-427i controller
Power supply
230V ±10% /50Hz
Power consumption
4W
Ambient temperature
5÷50°C
Load on output of each pump
0,5A
Measurement accuracy
1°C
Thermal resistance of the sensor
-30÷99°C
Fuse
3.15A
ASSEMBLY
ATTENTION: The assembly should be done only by the person with proper qualifications! The device in this
time must not be live (you should ensure that plug is disconnected from the grid)!
ATTENTION: wrong connection of wires can cause the damage of the regulator!
The regulator must not work in closed circuit of central heating. The balance tank, safety valves and pressure
valves that protect by boiling the water in the central heating circuit must be mounted.
THE DIAGRAM OF CONNECTING CABLES TO THE CONTROLLER.
While assembly of wiring of the controller you should pay special attention to correct connecting ground wires.
PE- earthing
N- neutral
L- phase