7
1-3
CAVO ALIMENTAZIONE
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.4 CONNECTIONS.
Gas connection
(Appliance category II
2H3+
).
Our boilers are designed to operate with methane
gas (G20) or LPG. Supply pipes must be the same
as or larger than the 3/4”G boiler tting. Before
connecting the gas line, carefully clean inside
all the fuel feed system pipes to remove any
residue that could impair boiler eciency. Also
make sure the gas corresponds to that for which
the boiler is prepared (see boiler data-plate).
If dierent, the appliance must be converted
for operation with the other type of gas (see
converting appliance for other gas types). e
dynamic gas supply (methane or LPG) pressure
must also be checked according to the type used
in the boiler, which must be in compliance, as
insucient levels can reduce generator output
and cause malfunctions.
Ensure correct gas cock connection. e gas
supply pipe must be suitably dimensioned
according to current regulations in order to
guarantee correct gas ow to the burner even
in conditions of maximum generator output
and to guarantee appliance eciency (technical
specifications). The coupling system must
conform to standards.
Fuel gas quality. The appliance has been
designed to operate with gas free of impurities;
otherwise it is advisable to fit special filters
upstream from the appliance to restore the
purity of the gas.
Storage tanks (in case of supply from LPG
depot).
- New LPG storage tanks may contain residual
inert gases (nitrogen) that degrade the mixture
delivered to the appliance casing functioning
anomalies.
- Due to the composition of the LPG mixture,
layering of the mixture components may occur
during the period of storage in the tanks. is
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
Hydraulic connection.
Attention: In order not to void the warranty
before making the boiler connections, carefully
clean the heating system (pipes, radiators, etc.))
with special pickling or de-scaling products to
remove any deposits that could compromise
correct boiler operation.
A chemical treatment of the thermal system
water is required, in compliance with the
technical standards in force, in order to protect
the system and the appliance from deposits (e.g.,
lime scale), slurry or other hazardous deposits.
Water connections must be made in a rational
way using the couplings on the boiler template.
e boiler safety valve outlet must be connected
to a draining funnel. Otherwise, the manufacturer
declines any responsibility in case of ooding if
the drain valve cuts in.
Attention: the manufacturer declines all liability
in the event of damage caused by the installation
of an automatic lling system.
Attention: to preserve the duration of appliance
eciency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the “polyphosphate dispenser” kit
is recommended.
Electrical connection. e "Mini Eolo 24 3E"
boiler has an IPX5D protection rating for the
entire appliance. Electrical safety of the appliance
is reached only when it is correctly connected
to an ecient earthing system as specied by
current safety standards.
Attention: the manufacturer declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an
ecient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specications as shown on the boiler data-plate.
Boilers are supplied complete with a special “X”
type power cable without plug. e power supply
cable must be connected to a 230V ±10% / 50Hz
mains supply respecting L-N polarity and earth
connection
; this network must also have a
multi-pole circuit breaker with class III over-
voltage category. When replacing the power
supply cable, contact a qualied technician (e.g.
the Authorized Aer-Sales Technical Assistance
Service). e power cable must be laid as shown
(Fig. 1-3).
In the event of mains fuses replacement on the
connection board, use a 3.15A quick-blow fuses.
For the main power supply to the appliance,
never use adapters, multiple sockets or extension
leads.
POWER CABLE
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