Technical Information; Dimensional And Technical Characteristics - Ferroli GN2 Installation And Operating Instructions Manual

Technical information

1.01 Introduction
GN2 is a new high efficiency heat generator producing hot water for heating purposes. It can operate with either
a liquid and/or gas fuel fired burner 1° or 2° stage.
The boiler unit consists of cast iron parts assembled by steel rods and links, the shape of which has been particularly
designed to achieve optimum fin distribution. This ensures high thermal efficiency and consequently high energy
savings. The boiler is insulated by a thick layer of glass wool to reduce heat loss to the minimum.
Key
1 Thermometer
2 Arrangement for automatic control
3 Mains switch
4 Overheat cut-off thermostat
5 C.H. boiler thermostat
1.02 Function of the adjusting and safety devices
Fig. 1
Manually reset safety thermostat 3 (fig. 1)
This is activated when the temperature in the boiler during the heating phase reaches a value beyond which a dangerous
condition could be created.
Boiler regulating thermostat 5 (fig. 1)
Used to adjust the temperature in the boiler by means of its adjuster knob. This thermostat controls the 1° or
2° stage burner. In the case of use of 1° stage burner, you must not connect the B2 block (2° stage burner).
Ambient thermostat
This is not standard supply, but can be mounted at the Installer's charge.
It is connected in series with the regulating thermostat and contemporaneously controls both the burner and the plant
circulator during the heating phase. It is advisable to install this thermostat for greater comfort and energy savings.
2. Dimensional and technical
characteristics
2.01 Load loss characteristics (fig. 2)
The load losses of the hydraulic circuit pertaining to each
boiler model, are specified in the following diagram
which refers to the water flow rates corresponding to
temperatures between 10 and 20°C.
Q (m 3 /h)
Fig. 2
GN2
3