Service And Maintenance; Settings - Ferroli SYS 10-23 Installation, Maintenance And User Instruction

3. SERVICE AND MAINTENANCE

3.1 Settings

All the adjustment and conversion operations must be performed by Qualified Personnel, such as per-
sonnel from the Local Customer Service Centre.
FERROLI Ltd. declines all liability for damage to property or injury to persons arising from work under-
taken to the appliance by non-authorised persons
Conversion of supply gas
The appliance can operate on Natural Gas or LPG as the supply gas, and is factory configured for use
with one of the two gases, as is clearly marked on the packaging and on the rating plate on the appli-
ance itself. If the appliance has to be used with a gas other than the one it has been set for, the special
conversion kit must be used, as shown below:
1 Replace the injectors in the main burner, installing the injectors indicated in technical data table in
Chap. 4.4, according to the type of gas used
2 Adjust the minimum and maximum pressures of the burner (ref. corresponding paragraph), setting
the values indicated in technical data table for the type of gas used.
3 Change the position of Jumper 02 on the electronic board (ref. corresponding paragraph).
4 Apply the adhesive label in the conversion kit next to the rating plate, to confirm the conversion
operation.
Adjusting the gas pressure and heat output
The following adjustments must be carried out by qualified personnel only.
To adjust boiler heat input simply adjust the burner pressure gas via the pressure regulator on the gas
valve (fig. 14).
Adjust the gas pressure at the burner by turning the pressure
regulating screw: turn it clockwise to increase the burner
pressure and anticlockwise to decrease it.
The diagrams indicate the variation in heat output to the
water as burner working pressure is varied (fig. 28).
Adjusting boiler output to the actual requirements of the
central heating system will minimise boiler cycling thus saving
fuel, varying the output has virtually no effect on the efficiency
and combustion characteristics of the boiler.
Adjusting the soft light facility
The appliance has a soft light facility to ensure a quiet igni-
tion sequence.
Measuring the gas pressures during ignition is done via the
outlet test point on the gas valve, the pressure should be
kept to a minimum, but sufficient to ensure correct cross
lighting of the burner.
Natural gaz
LPG
20
Min soft setting 2 mbar
Mid soft setting 4 mbar
Max soft setting 6 mbar
Min soft setting 5 mbar
Mid soft setting 12 mbar
Max soft setting 20 mbar
Sys 10 - 23
Pressure regulator
protection plug
Soft light
adjustment
Outlet
pressure
Test Point
Inlet
pressure
Test Point
Inlet
gascock
fig. 14