Immergas 3.025499, Instruction And Recomendation Booklet

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1-2
INS
TALLER
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MAINTEN
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CE TECHNI
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1.3 MAIN DIMENSIONS OF THE REMOTE ZONE CONTROL.
1.4 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 1/2”G 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 operation 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 accord-
ing to the type used in the boiler, which must
comply with the technical standards in force, as
insufficient levels can reduce generator 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 genera-
tor output and to guarantee appliance efficiency
(technical specifications). The coupling system
must conform to technical standards in force.
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.
1.5 BOILER 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 chemical treatment of the thermal 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., lime 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:
Immergas declines all liability in the
event of damage caused by the inclusion of auto-
matic 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
scale, 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 appli-
ance 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 removed.
After first ignition, check that the drain trap is
filled with condensate (para. 1.23). Also, comply
with national and local regulations on discharg-
ing waste waters.
1.6 SOLAR CIRCUIT HYDRAULIC
CONNECTION.
Attention: when installing the solar circuit (pipes
and fittings), only use suitable materials that
withstand high temperatures.
The pump unit allows you to connect the storage
tank to the solar collector, making the water cir-
culate according to the request of the control unit.
N.B.:
- The pipes for connection to the solar collector
must be ordered separately.
- Every time the solar system is emptied, the
system must be rinsed well with running water.
- The circulation unit is not designed for use in
direct contact with swimming pool water.