Ferroli GN1 Mode D'emploi page 16

4.02 Hydraulic connections
Boiler must be connected to the system according to boiler back part indications and those provided at fig.
2. Pipe must be free of any kind of strain and security valves must be provided in both central heating system
and domestic hot water system location of such security valves be as close is possible to the boiler and
between the boiler and valve no obstructions or gate valves must be placed.
The boiler is not supplied with expansion tank it has to be provided during the boiler installation. It is advised
that the pressure in the hydraulic system has to be between 0,5 and 1 bar measured in cold water condition.
4.03 Connection to the chimney
It is recommended to connect the boiler to a good working chimney built according to the regulations. The
connection between boiler and chimney must be done by using suitable material proof against high
temperature and corrosion. Where flue sections have to be connected it is advised pay attention to avoid
leaking and provided good insulation through all the flue length to avoid condensing problem.
5. Testing
5.01 Before the first light of the boiler
Before the first light of the boiler follow these check list:
a) check the system is filled with water at the right pressure;
b)check against any leakage of water fuel;
c) check that the correct electric power is supplied to the unit;
d)check size and perfect flue installation;
e) check against any type of flammable materials where the boiler is installed;
f) check the burner has the right heat input according to the boiler size;
g)control that the water valves are open.
5.02 First lighting
After the boiler preliminaries checking , the appliance can be lights in the following way;
1) Open the fuel gate valve.
2) Set the regulating thermostat at the required temperature level.
3) Give electric power to the boiler and switch on the main switch 4 (fig. 1) on the boiler control panel.
After above operations the burner will start to run and the boiler will begin to work.
5.03 After the first lighting
After the first lighting it is advisable check:
burner works properly, this checking must be done by appropriate instruments.
Thermostats operate correctly.
Water flows through the system.
Smoke gases evacuate through the flue duct.
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