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3.4 Starting the Boiler
3.4.1 Preliminary Checks
Before starting the boiler it is necessary to perform the following checks:
- flue gas discharge pipe and its terminal are installed in accordance to the instructions: when the boiler is running no products
generated by combustion are to leak from any gasket;
- power supplied to the boiler is 230 V – 50 Hz;
- the system is correctly loaded with water (water pressure gauge reading is 1 / 1,3 bars);
- all system pipes stopcocks are open;
- the gas supplied to the boiler corresponds to that for which the boiler is manufactured: convert the boiler to the available gas when
necessary ( see section 3.6 “Adaptation to other gases and burner adjustment”. The procedure is to be carried out by qualified
technical personnel;
- the gas supply stopcock is open;
- there are no gas leaks;
- the main switch external to the boiler is set to on;
- the 3 bar safety valve is not blocked;
- there are no water leaks;
- the pump is not blocked.
3.4.2. Switching on and switching off
In switching on and switching off the boiler, follow the “Instructions for the user”.
3.5. Wiring Diagram
0SCHEMOD11
:
Electronic pcb
M1-M10
:
Power Supply connector, TA
M13
:
Connector for tele-metering
M2-M12
:
Service
connectors
E
:
Detection/ignition electrode
P
:
Circulation
pump
V
:
Fan (TFS models only)
TF
:
Thermostat preventing flue gas overflow
PV
:
Fan pressure switch (TFS models only)
DK
:
Low water pressure switch
SR
:
CH probe 10 Ohm A 25°C B = 3435
SS
:
DHW probe 10 Ohm A 25°C B = 3435
TA
:
Ambient thermostat (option)
CM1-CM2
:
Boiler type and gas type selection jumpers
FL
:
Flow
sensor
VG
:
Gas
valve
TL
:
Limit
thermostat
