4.6.1
WIRING DIAGRAM
Instructions for the installer
23
LE
D fl
am
e
LE
D loc
ko
ut
Re
set
+1
2 V
CL
+
GND
Fan PWM
IGNITION TRANSFORMER
O
CI43
0
AGU2
.5
6.
..
BS
B
bu
s
room
uni
t
Room temperature
4
5
3
2
1
X17 EARTH
4
3
2
1
8
6.
3
A
6.
3
A
FU
SE
FU
SE
X1a
X1b
230V~50Hz
X18
Thermalfuse
X1f
PUMP
PE
N
L
X17
EARTH
X17 EARTH
Return W
ater
Temperature
NTC Sensor
Flow W
ater
Temperature
NTC Sensor
Cascade Module
GAS VALVE
FLUE GAS
TEMPERATURE SENSOR
PRESSURE
TRANSDUCER
IGNITION
ELECTRODE
IONISATION
ELECTRODE
External Probe
Boiler sensor
Cascade sensor
X17 EARTH
X17
EARTH
Room Thermostat
X17 EARTH
4.6
ELECTRICAL INSTALLATION
All the wiring is connected to connectors that is fitted in a socket. The connectors can be taken from the sockets on the PCB without
loosening the wiring. The connections are placed in the back of the display, and can be reach by removing the front panel of the boiler
and the connector protection cover. For operation the boiler needs a power supply of 230VAC 50Hz with earth.Power supply must be
removed when you are working on the boiler. Electrical wiring should be done according to national, local or other special standards.
Electrical works must be done by a qualified service engineer that is skilled in electrical installation according to the standards.
1 - Respect the connection L (Line) - N (Neutral) and earth (ground) connections.
2
2 - Use wires with a cross-section greater than or equal to 1.5 mm , complete with pointed end terminals;
3 - Refer to the wiring diagrams in this manual for any operations on the electrical system;
4 - Connect the appliance to an effective earth system.
5 - Power supply and room thermostat cables must not run near hot surfaces (outlet pipes).
The manufacturer is not liable for any damage due to
the failure to earth the appliance and to observe the
information provided on the wiring diagrams.
CH PUMP
