QUADRIFOGLIO B
85
EN
cod. 3541D501 - Rev. 03 - 12/2013
System water pressure adjustment
The filling pressure with system cold must be approx. 1.0 bar. If the system pressure falls
to values below minimum, the boiler card will activate
fault 37
(fig. 30).
fig. 30 - Low system pressure fault
A
Once the system pressure is restored, the boiler will activate the 300-second
air venting cycle indicated on the display by FH.
3. INSTALLATION
3.1 General Instructions
THE BOILER MUST ONLY BE INSTALLED BY QUALIFIED PERSONNEL, IN COMPLI-
ANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE
PROVISIONS OF CURRENT LAW, THE NATIONAL AND LOCAL REGULATIONS,
AND THE RULES OF PROPER WORKMANSHIP.
QUADRIFOGLIO B
is a heat generator arranged to operate alone or in cascade (bank).
FERROLI S.p.A. supplies (on request) all the plumbing fittings and fume manifolds for
the connection of 2 or 3 units in cascade in configurations of 70 + 70 kW to 320 + 320
+320 kW.
When the generators QUADRIFOGLIO B are installed in cascade with the accessories
provided for by FERROLI, they can be considered as a single heat generator with equiv-
alent total capacity equal to the sum of the powers of all the units connected in cascade.
All requirements of the current rules and regulations applicable to this generator of
"equivalent" total heating capacity must be met. In particular the place of installation,
safety devices and fume exhaust system must be adequate for the total heating capacity
of the bank of units. The requirements given in this manual apply to the single unit as well
as connection in cascade. For further information regarding the installation of generators
in cascade, refer to the manual supplied with the cascade connection kits.
A
The boiler electronics have a function for a managing a cascade of up to 6 units.
To create cascade systems with more than three units without using the acces-
sories provided for by FERROLI, it is necessary to arrange hydraulic/gas man-
ifolds of appropriate size and complete with all the safety devices required by
the current regulations, as well as single fume exhausts or manifolds appropri-
ately sized by a qualified technician.
3.2 Place of installation
The generator must be installed in an appropriate 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.
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 not more than 0.5 metres, with no shut-off
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
.
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.
B
Before installation, carefully wash all the pipes of the system to remove
any residuals or impurities that could affect proper operation of the unit.
Use chemical conditioners that are suitable for the purpose, i.e. able to remove
from the walls and bottom of the pipes and the various components of the sys-
tem, 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.
B
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. 5.1and the symbols
given on the unit.
Table. 2 - SIZE OF CONNECTIONS
CODICE:37
MODULO:1
MODEL
B 70
B 125
B 220
B 320
A
- System delivery
1” 1/4 threaded 2” threaded
DN65 flanged
B
- HIGH TEMPERATURE system return
1” 1/4 threaded 2” threaded
DN65 flanged
C
- LOW TEMPERATURE / main system return
1” 1/4 threaded 2” threaded
DN65 flanged
D
- Gas inlet
1” threaded
1” threaded
1” threaded
fig. 31 - Connections
fig. 32 - Probe positioning
A
B
C
D
B
C
1
2
