Adjustments - Ferroli GFN K Instructions For Use, Installation & Maintenance

Shutdown for long periods
To put the boiler out of service for long periods (e.g. at the end of the cold season), carefully clean the boiler to prevent
corrosion.
B
To avoid damage caused by freezing during long idle periods in winter, it is advisable to drain all water from
the boiler, or add a suitable antifreeze to the heating system, in compliance with that prescribed in sec. 2.3.

1.4 Adjustments

Summer mode
Turn the Summer/Winter switch 2 to
element is activated. The boiler is ready to deliver domestic hot water only, without having to load wood.
B
In Summer mode the circulating pumps are deactivated. The boiler must not be loaded with fuel and lit since
the heat produced may not be properly dissipated.
Winter mode
Turn the Summer/Winter switch to
hot water the boiler must be loaded with fuel and lit. Turn the knob 3 to the required domestic hot water temperature
value and the draught thermostatic control knob to the required temperature value.
To prevent condensation in the combustion chamber, it is advisable to turn the adjustment knob to 60°C; turning it to
80°C and adjusting the heating water temperature by means of the mixer valve would be optimum.
Load the combustion chamber with combustible material (paper and wood) and after obtaining a good bed of fire and
embers, add small and medium-size pieces of coke coal: when lit, boiler operation will be automatic.
The only manual operations necessary are:
- Periodical cleaning of the firebox through the front grill, with emptying of the ashpan, opening the bottom door.
- Periodical loading of the firebox with coal coke through the special top door. Remember that with a complete load
of coke coal, operation without reloading varies from a minimum of approx. 4 hours (at nominal output) to a maxi-
mum of approx. 12 hours (at reduced output) with draught control set to a temperature value of between approx. 80°
and 40°C respectively.
- Adjustment of the damper shutter opening in order to adapt the flue draught to the value necessary for balanced
combustion, that is neither too fast nor too slow (e.g. open for normal operation, closed for reduced output, with var-
iable openings at intermediate powers and according to flue draught).
System pressure adjustment
Periodically check that the system is full of water. These checks must be carried out cold, checking the expansion tanks
(open types must have water at the initial level, whereas in closed types the pressure must be equal to or higher than
the initial prefilling pressure).
34
and the knob 3 to the required temperature value. The hot water tank heating
. The hot water tank heating element is deactivated. To deliver heat or domestic
cod. 3540I190 - 10/2007 (Rev. 00)
GFN K
GB