Place Of Installation; Plumbing Connections - Ferroli SFL 3 Instructions D'utilisation, D'installation Et D'entretien

2.4 Adjustments
Important
To prevent condensate from forming in the combustion chamber, it is advisable to turn
the control knob to 60°C; it would be best to turn it to 80°C and adjust the heating water
temperature with the mixer valve.
The only manual operations necessary are:
- Periodical cleaning of the firebox through the front grate, with removal of ash, open-
ing the bottom door.
- Periodical loading of the firebox through the special top door.
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).
3. INSTALLATION
3.1 General Instructions
BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSON-
NEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL
MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF NA-
TIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.

3.2 Place of installation

The boiler must be installed in a special room with ventilation openings to the outside in
conformity with current regulations. If there are several burners or extraction units that
can work together in the same room, the ventilation openings must be sized for simulta-
neous operation of all the units. The place of installation must be free of flammable ob-
jects or materials, corrosive gases, volatile substances or dusts that can be sucked by
the fan. The place must be dry and not exposed to rain, snow or frost.
Enough space must be provided around the unit for removing the casing and
A
for normal maintenance operations. In particular, make sure there is enough
space in the front part of the boiler for loading fuel.
For installation, proceed as follows:
1. Unpack the boiler.
2. Fit the thermostatic regulator "H"fig. 2.
3. Connect the boiler delivery and return to the heating system.
4. Adjust the air inlet door adjustment screw so that with the door touching there is in
any case an air passage of approx. 1 - 2 mm (max.). With boiler cold, set the control
thermostat to 60°C. Hook the chain "C" to the special air inlet door eyelet "D", ad-
justing its length so that the air passage "L" (fig. 2) is approx. 15 mm for "coke III"
and 2 mm for "wood".
fig. 2 - Installation
10
EN
H
C
D
cod. 3540Z902 - 01/2012 (Rev. 00)

3.3 Plumbing connections

The heating capacity of the unit must be previously established by calculating the build-
ing's heat requirement according to the current regulations. The system must be provid-
ed with all the components for correct and regular operation. In particular, provide for all
the protection and safety devices required by the current regulations. They must be in-
stalled on the hot water circuit delivery piping, within a distance of not more than 0.5 me-
tres, with no shutoff devices in between. The unit is not supplied with an expansion tank;
its connection must therefore be carried out by the Installer.
A safety valve suitable for use with this unit is available on request.
B
The safety valve outlet must be connected to a funnel or collection pipe to pre-
vent water spurting onto the floor in case of overpressure in the heating circuit.
Otherwise, if the discharge valve cuts in and floods the room, the boiler manu-
facturer cannot be held liable.
Do not use the water system pipes to earth electrical appliances.
Before installation, carefully clean all the system pipes to remove any residuals or impu-
rities that could affect proper operation of the unit.
Carry out the relevant connections according to the diagram in cap. 5 and the symbols
given on the unit.
System water characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO3), use suitably treated
water in order to avoid possible scaling in the boiler. Treatment must not reduce the hard-
ness to values below 15°F (Decree 236/88 for uses of water intended for human con-
sumption). Treatment of the water used is indispensable in case of very large systems
or with frequent introduction of replenishing water in the system.
Antifreeze system, antifreeze fluids, additives and inhibitors
If necessary, antifreeze fluids, additives and inhibitors can be used only if the manufac-
turer of these products guarantees that they are suitable for this use and do not cause
damage to the boiler exchanger or other components and/or materials of the unit and
system. Do not use antifreeze fluids, additives or inhibitors that are not specific for use
in heating systems and not compatible with the boiler materials and system.
Safety coil connection
It is possible to receive an external (cooling circuit) safety heat exchanger (optional) to-
gether with the boiler.
In countries where Standard EN 303-5 is applied, the boiler must have the availability of
a system allowing a safe outlet for excess of heat without additional energy. In this way
the max. boiler water temperature will not exceed 100°C (overheating protection).
The minimum cooling water supply pressure must be 2.0 bar. A flow-rate of at least 10 l/
min must be available.
• Remove the flange "A" located on the back of the boiler.
• Fit the coil "N", fixing it with the 4 bolts.
• Fit the safety valve "P" on the outlet of the coil "N", respecting the direction of the
arrow. Insert the valve probe "Q" in the special sheathing "G". Connect the water
inlet directly to the safety coil. Connect the outlet to the valve.
N
G
fig. 3 - Safety heat exchanger connection
In pellet use only (with burners FERROLI"SUN P7" - "SUN P12"), as an alter-
A
native to the safety coil it is possible to use the "Thermostatic safety kit" code
033001X0.
A
P
Q
SFL