7
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.4 CONNECTIONS.
Gas connection (Appliance category II
2H3+
).
Our boilers are designed to operate with methane
gas (G20) and 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 op-
eration 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,
as insucient levels can reduce generator output
and cause malfunctions.
Ensure correct gas cock connection. e gas sup-
ply pipe must be suitably dimensioned according
to current regulations in order to guarantee cor-
rect gas ow to the burner even in conditions of
maximum generator output and to guarantee
appliance eciency (technical specications).
e coupling system must conform to standards.
Fuel gas quality. e appliance has been de-
signed to operate with gas free of impurities; oth-
erwise it is advisable to t special lters 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.
Important: 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.
In compliance with Standards in force it is man-
datory to treat the water in the heating system
chemically in order to protect the system and
appliance from deposits of lime scale.
Hydraulic connections must be made in a
rational way using the couplings on the boiler
template. e boiler safety valves outlet must be
connected to a draining funnel. Otherwise, the
manufacturer declines any responsibility in case
of ooding if the drain valves cut in.
Important: the manufacturer declines all liability
in the event of damage caused by the installation
of an automatic lling system.
Important: 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 28 3 E”
boiler has an IPX5D protection rating for the
entire appliance. Electrical safety of the unit is
reached when it is correctly connected to an
ecient earthing system as specied by current
safety standards.
Important: 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 cor-
responds to maximum absorbed power specica-
tions as shown on the boiler data-plate. Boilers
are supplied complete with an “X” type power
cable without plug. e power supply cable must
be connected to a 230V ±10% / 50Hz network
respecting the L-N polarity and the earth con-
nection . An omnipolar disconnection must
be envisioned on this network with a class III
overvoltage category. When replacing the power
supply cable, contact a qualied technician (e.g.
the Immergas Aer-Sales Technical Assistance
Service). e power cable must be laid as shown.
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 appli-
ance, never use adapters, multiple sockets or
extension leads.
To Next Page
Loading...
