Ferroli PEGASUS F3 N 2S Instructions For Use, Installation And Maintenance - Pegasus F3 N 2S
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Pegasus F3 N 2S
1.3 Turning on and off
Ignition
• Open the gas valve ahead of the boiler.
• Turn on or insert any switch or plug ahead of the boiler
• Turn the boiler switch “7” onto 1 (Fig. 1).
• Turn knob “6” to the preselected temperature and any room thermostat to the desired temperature
value. At this point, the burner will light and the boiler begins to function automatically, controlled
by its adjustment and safety devices.
• If the boiler is equipped with an electronic thermostatic controller mounted at position 1 of Fig. 1,
the user must also take into account the manufacturer’s instructions.
If, after correctly carrying out the lighting procedure, the burners do not light and the pushbutton
light “5” comes on, wait about 15 seconds and then press the above-mentioned pushbutton.
The flame controller reset in this way will then repeat the ignition cycle. If the burners do not
light after a number of attempts, consult the anomalies paragraph.
In case of an electrical power failure while the boiler is working, the burners will go out and
re-ignite automatically when power is restored.
Turning off
Close the gas cock ahead of the boiler, turn knob “7” onto the 0 position and disconnect the
electrical power.
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the boiler and the system; or add a suitable antifreeze to the heating system.
The boiler switch 7 has 3 positions, “0-1-TEST”; the first two have the on-off function, the third
(unstable) must only be used for service and maintenance purposes.
1.4 Adjustments
System temperature adjustment
Turn knob 6 (Fig. 1) clockwise to increase the heating water temperature, turn anticlockwise to decrease
it. The temperature can be varied from a minimum of 30°C to a maximum of 90°C. However, it is
advisable not to operate the boiler below 45°C.
Room temperature adjustment (with optional room thermostat)
Using the room thermostat, set the temperature desired in the rooms. Controlled by the room
thermostat, the boiler lights and delivers water to the system at the temperature set by boiler
adjustment thermostat 6 (Fig. 1). The generator turns off when the desired temperature in the
rooms is reached.
If the room thermostat is not installed the boiler will keep the system at the temperature set
by the boiler control thermostat.
Water system pressure adjustment
The filling pressure with system cold, read on boiler hydrometer (detail 2 in Fig.1), must be about 1.0 bar.
If, during operation, the system pressure falls (caused by the evaporation of gas dissolved in the water) to
values below the minimum described above, the user must bring it back to the initial value by operating
the filling cock. At the end of the operation always close the filling cock.