Riello 20118250, Installation And Maintenance Manual

Page: 27 / 64

27
INSTALLATION
− close the door and turn the control panel outwards;
− Lift the upper panel (4) and insert the external connec-
tion cables into the preset cable glands (5);
5
4
− Make the electrical connections as shown in the follow-
ing diagrams;
TA TA OT OT 0 10 P P S S SE SE
TA
MO1
A B A B +
MO2
MG MD
L
⏚
N
230 V - 50 Hz
MO3
Connections to be provided by installer
PE Earth/ground
N Neutral
L Live
TA Room thermostat
MG Managing/Zone Modbus
MD Modbus Depending
NOTE The room thermostat connection must be dry (no
voltage).
− on completion of the electrical connections, replace all
removed components in the opposite order.
9
The following is mandatory:
− The use of an omnipolar magnetothermic switch, line
disconnecting switch in compliance with CEI-EN stand-
ards (contact opening of at least 3 mm)
− Respect the connection L (line) - N (neutral). Keep the
earth conductor 2 cm longer than the power supply con-
ductors
− Use cables with a section greater than or equal to 1.5
mm
2
, complete with cable terminal caps
− Refer to the wiring diagrams in this manual for all electric
operations
− Connect the equipment to an effective earthing system.
0
It is strictly forbidden to use pipes of any kind to ground the
appliance.
0
It is prohibited to lay power supply and room/heat demand
thermostat cables near hot surfaces (delivery pipes). If they
may come into contact with parts that have a temperature
of over 50°C, use a suitable type of cable.
The manufacturer is not responsible for any damage caused by
failure to earth connect the device and failure to comply with
what is indicated in the wiring diagrams.