Ferroli QUADRIFOGLIO B 125 Instructions For Use, Installation And Maintenance Download Page 70

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QUADRIFOGLIO B

cod. 3541F574 - Rev. 00 - 09/2017

3.2 Place of installation

The generator must be installed in a suitable room with ventilation openings towards the
outside in conformity with the current regulations. If there are several burners or ex-
hausters that can work together in the same room, the ventilation openings must be
sized for simultaneous operation of all the units. The place of installation must be free of
flammable materials or objects, corrosive gases, powders or volatile substances. The
room must be dry and not exposed to rain, snow or frost. For positioning, leave sufficient
room around the unit for normal maintenance operations. In particular, check that the
burner door can open freely.
Installation outside in a partially protected place or unprotected place with temperatures
reaching -5°C can be done using the optional kits:

code 056007X0

for model

QUADRIFOGLIO B 70

code 056008X0

for model

QUADRIFOGLIO B 125

code 056009X0

for model

QUADRIFOGLIO B 220

code 056010X0

for model

QUADRIFOGLIO B 320

Follow the assembly instructions contained in the kit. Correct installation of the outdoor
kit protects the internal parts of the generator against the atmospheric agents and gives

QUADRIFOGLIO B

the protection rating

IPX4D

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 for the complete
modular generator. They must be installed on the hot water circuit delivery piping, imme-
diately after the last module, within a distance of not more than 0.5 m. and with no shutoff
devices in between.

The unit is not supplied with an expansion tank or safety valve;

their connection must therefore be carried out by the Installer

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, flush all the pipes of the system thoroughly to remove
any residuals or impurities that could affect proper operation of the unit.

Use chemical conditioners suitable for the purpose; i.e. able to remove from the
walls and bottom of the pipes and the various components of the system,
sludge, metal oxides and, in low temperature systems, also biomass, with just
the circulation of the water, with system hot and/or cold. The products used
must not be corrosive and/or aggressive for metals and plastics and must not
significantly alter the natural pH of the water.

Also, a filter must be installed on the system return piping to prevent impurities
or sludge from the system clogging and damaging the heat generators.
The filter must be installed when replacing generators in existing systems. The
manufacturer declines any liability for damage caused to the generator by fail-
ure to install or inadequate installation of this filter.

Carry out the relevant connections according to the diagram in sec. 5.1 and the symbols
on the unit.

Table. 2 - SIZE OF CONNECTIONS

If only one system return is used, connect to the main return connection C.
If two system returns are used, connect the low temperature return (e.g. floor system)

connection C

and the high temperature return

to connection B

(e.g. hot water storage

tank or radiators).

Also, the system return probe must be moved from the pocket in

return pipe C to the pocket in return pipe B. Once the probe is repositioned, make
sure to secure it with the special clip

(see fig. 32).

In case of installation in bank, the water circuit of each boiler must be fitted with a motor-
operated shutoff valve (controlled by the unit, see wiring diagram fig. 87) that prevents
reverse circulation with the boiler not working.
A single safety valve must also be provided for each boiler in accordance with the re-
quirements of

“file R”

The following optional kits are available for this purpose:

052000X0

- MOTOR-OPERATED BUTTERFLY VALVE

DN50

052001X0

- MOTOR-OPERATED BUTTERFLY VALVE

DN65

If the adjustment of the distribution system is independent from the electronics of
the generators, the creation of a bypass between the delivery manifold and that of
the system return is advisable in order to protect the circulating pumps

System water characteristics

QUADRIFOGLIO B

boilers are suitable for installation in heating systems with

non-significant entry of oxygen (ref. systems "case I" EN 14868). A physical
separator (e.g. plate-type heat exchanger) must be provided for in systems with
continuous entry of oxygen (e.g. underfloor systems without antidiffusion pipes
or open vessel), or intermittent (less than 20% of system water content).
The water inside a heating system must comply with the current laws and regu-
lations and the characteristics indicated by UNI 8065, and the requirements of EN
14868 (protection of metallic materials against corrosion) must be respected.
The filling water (first filling and subsequent replenishment) must be clear, with
hardness as per the following table and treated with suitable chemical condi-
tioners against the initiation of scaling or corrosion, that are not aggressive on
metals and plastics, do not develop gases and, in low-temperature systems, do
not cause proliferation of bacterial or microbial masses.
The water contained in the system must be periodically checked (at least twice
a year during the season when the systems are used, as required by UNI
8065), possibly have a clear appearance and must respect the limits given in
the following table.

It must contain chemical conditioners in a concentration sufficient to protect the
system for at least one year. Bacterial or microbial loads must not be present
in systems at low temperature.
Conditioners, additives, inhibitors and antifreeze liquids must declared by the
producer suitable for use in heating systems and that they do not cause dam-
age to the boiler's heat exchanger or other components and/or materials of the
boiler and system.
Chemical conditioners must ensure complete deoxygenation of the water, must
contain specific protection for yellow metals (copper and its alloys), anti-fouling
agents for scale, neutral pH stabilisers and, in low temperature systems, spe-
cific biocides for use in heating systems.

Recommended chemical conditioners:

SENTINEL X100 and SENTINEL X200
FERNOX F1 and FERNOX F3

The unit is equipped with an antifreeze system that activates the boiler in heat-
ing mode when the system delivery water temperature goes below 6 °C. The
device is not active if the power and/or gas supply to the unit is turned off. If nec-
essary, for system protection use a suitable antifreeze liquid that meets the
same requirements as set out above and provided for by UNI 8065.
In the presence of adequate chemical and physical treatments of both system
and feed water and related high-cycle controls able to ensure the required pa-
rameters, for industrial applications only it is permissible to install the product
in open-vessel systems with a hydrostatic height of the vessel able to ensure
compliance with the minimum operating pressure given in the product’s techni-
cal specifications.

The presence of deposits on boiler exchange surfaces due to non-com-
pliance with these requirements will result in non-recognition of the war-
ranty.

MODEL

B 70

B 125

B 220

B 320

- System delivery

1” 1/4 threaded

2” threaded DN65 flanged

- HIGH TEMPERATURE system return

1” 1/4 threaded

2” threaded DN65 flanged

- LOW TEMPERATURE / main system return 1” 1/4 threaded