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CAVO ALIMENTAZIONE
1-2
INS
TALLER
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MAINTEN
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1.3 GAS CONNECTION.
Our boilers are designed to operate with methane
gas (G20) and LPG. Supply pipes must be the
same as or larger than the boiler fitting. Before
connecting the gas line, carefully clean inside all
the fuel feed system pipes to remove any residue
that could impair boiler efficiency. Also make
sure the gas corresponds to that for which the
boiler is prepared (see boiler data name plate). If
different, the appliance must be converted for op-
eration with the other type of gas (see converting
appliance for other gas types). The dynamic gas
supply (methane or LPG) pressure must also be
checked according to the type used in the boiler,
which must comply with the technical standards
in force, as insufficient levels can reduce gen-
erator output and cause malfunctions. Ensure
correct gas cock connection. The gas supply
pipe must be suitably dimensioned according to
current regulations in order to guarantee correct
gas flow rate to the burner even in conditions of
maximum generator output and to guarantee
appliance efficiency (technical specifications).
The coupling system must conform to technical
standards in force.
Risk of material damage after using sprays and
liquids to search for leaks.
Leak sprays and liquids clog the reference hole
PR (Part. 4 Fig. 3-3) of the gas valve, damaging
it irreparably.
During installation and maintenance, do not
use spray or liquids in the upper area of the gas
valve (side referring to the electric connections).
Fuel gas quality.
The appliance was designed
to operate with combustible gas free of impuri-
ties; otherwise it is advisable to fit special filters
upstream of the appliance to restore the purity
of the fuel.
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. This
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
1.4 HYDRAULIC CONNECTION.
Attention:
in order not to void the condensa-
tion module warranty, before making the boiler
connections, carefully wash the heating system
(pipes, radiators, etc.) with special pickling or
descaling products to remove any deposits that
could compromise correct boiler operation.
A treatment of the heating and water system wa-
ter is required, in compliance with the technical
standards in force, in order to protect the system
and the appliance from deposits (e.g. scale),
slurry or other hazardous deposits.
Water connections must be made in a rational
way using the couplings on the boiler template.
The boiler safety valves outlet must be connected
to a draining funnel. Otherwise, the manufactur-
er declines any responsibility in case of flooding
if the drain valve cuts in.
Attention:
the manufacturer declines all liability
in the event of damage caused by the inclusion
of automatic filling that is not its own brand.
In order to meet the system requirements es-
tablished by the technical regulation in force in
relation to the pollution of drinking water, we
recommend installing the IMMERGAS anti-
backflow kit to be used upstream of the cold
water inlet connection of the boiler. It is also
recommended that the heat transfer fluid (e.g.
water + glycol) entered in the primary circuit
of the boiler (heating circuit), complies with the
local regulations in force.
Attention:
to preserve the duration and the ef-
ficiency features of the appliance, in the presence
of water whose features can lead to the deposit
of limescale, installation of the “polyphosphate
dispenser” kit is recommended.
Condensate drain. To drain the condensate
produced by the appliance, it is necessary to
connect to the drainage system by means of
acid condensate resistant pipes, with an internal
Ø of at least 13 mm. The system connecting the
appliance to the drainage system must be carried
out in such a way as to prevent freezing of the
liquid contained in it. Before appliance ignition,
ensure that the condensate can be correctly re-
moved. After first ignition, check that the drain
trap is filled with condensate (para. 1.20). Also,
comply with national and local regulations on
discharging waste waters.
In the event condensate is not discharged into
the wastewater drainage system, a condensate
neutraliser must be installed to ensure compli-
ance with the parameters established by the
legislation in force.
1.5 ELECTRICAL CONNECTION.
The “Hercules Condensing ABT 32 3 ErP” 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
efficient earthing system as specified by current
safety standards.
Attention:
the manufacturer declines any re-
sponsibility for damage or physical injury caused
by failure to connect the boiler to an efficient
earth system or failure to comply with the refer-
ence standards.
Also ensure that the electrical installation cor-
responds to maximum absorbed power specifi-
cations as shown on the boiler data nameplate.
Boilers are supplied complete with an “X” type
power cable without plug.
The power supply cable must be connected to
a 230V ±10% / 50Hz mains supply respecting
L-N polarity and the earth connection
on
this network must also feature a multi-pole
circuit breaker of class III overvoltage category.
When replacing the power supply cable, contact
a qualified firm (e.g. the Authorised After-Sales
Technical Assistance Service). The power cable
must be laid as shown (Fig. 1-2). In the event of
mains fuse replacement on the P.C.B., use a 3.15A
quick-blow fuse. For the main power supply
to the appliance, never use adapters, multiple
sockets or extension leads.
SUPPLY VOLTAGE CABLE
