1.3 Connections.
Gas connection (Appliance category II
2H3+
).
Our boilers are built to operate on methane gas (G20) and
LPG. Supply pipes must be the same as or larger than the
1/2” G boiler fitting. Before making the gas connection,
carefully clean the inside of all the gas supply piping in order
to remove any residue that could impair boiler efficiency.
Also make sure the gas supply corresponds to that for which
the boiler is arranged (see boiler dataplate). Otherwise, the
appliance must be converted for operation with the other
type of gas (see converting appliances for another type of
gas). e dynamic gas supply pressure must also be checked
(natural or LPG) according to the type used in the boiler;
as insufficient levels can reduce generator output and cause
malfunctions.
Ensure correct gas cock connection as shown in the assembly
sequence shown in the figure.
e gas supply pipe must be suitably dimensioned according
to current regulations in order to guarantee correct gas flow
to the boiler even in conditions of max. generator output
and to guarantee appliance efficiency (technical data). e
coupling system must conform to standards.
Combustible gas quality.
e appliance is designed to
operate on gas free of impurities; otherwise it is advisable
to fit special filters ahead of the appliance for restoring the
purity of the gas.
Storage tanks (in case of supply from LPG depot).
- New LPG storage tanks may contain residuals of inert
gases (nitrogen) that impoverish the mixture delivered to
the appliance, causing anomalous operation.
- 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.
Water connection.
Important:
before carrying out the boiler connections all the
system pipes must be carefully cleaned with special descaling
products for removing any deposits that could compromise
correct boiler operation.
In order to prevent scale forming in the heating system, the
provisions given in the regulations on water treatment in
heating systems for civil use must be respected.
Water connections must be made in a rational way using the
connections on the boiler template. e boiler safety valve
outlet must be connected to a discharge funnel. Otherwise,
the manufacturer declines any responsibility in case of flood-
ing if the drain valve cuts in.
Important:
to preserve the life and efficiency of the domestic
circuit exchanger, it is advisable to install the “polyphosphate
dispenser” kit if the water has characteristics can give rise to the
forming of scale (in particular, the kit is recommended when the
water hardness is higher than 25 degrees French).
Condensate drain.
To drain the condensate produced by
the appliance, it is necessary to connect to the drainage sys-
tem by means of acid condensate resistant pipes having an
internal diameter of at least 13 mm. e appliance drainage
connection system must be executed in such a way as to
prevent freezing of the liquid contained in it. Before appli-
ance start-up, ensure that the condensate can be correctly
removed. Also, comply with national and local regulations
on discharging waste waters.
Electrical connection.
e entire “Victrix” boiler has IPX4D
protection rating. Electrical safety of the appliance is only
guaranteed when it is correctly connected to an efficient
earthing system according to current safety standards.
Important:
Immergas S.p.A. declines any responsibility for
damage to persons or things caused by failure to connect
the boiler to an earthing system or non-compliance with
the reference standards
Also ensure that the electrical system is suitable for the
maximum power absorbed by the appliance, specified on
the boiler dataplate. Boilers are supplied complete with
an “X” type power cable without plug. e power cable
must be connected to a 230V ±10% / 50Hz mains supply
respecting the polarity L-N and earth connection
; the
mains power supply must also be equipped with a multi-pole
circuit breaker with contact opening gap of at least 3 mm.
When replacing the power supply cable, contact a qualified
technician (e.g. Immergas Authorized Technical Assistance
Service). e power cable must be laid as shown.
In the event of mains fuse replacement on the control card,
use a 3.15A quick-blow fuse. Never use adapters, multiple
sockets or extension leads for the main power supply to the
appliance.
If correct L-N polarity is not respected during connection,
the boiler will not detect the flame and inhibits start-up.
Important:
also, whenever L-N polarity is not respected, if
the neutral is live with temporary residual voltage over 30V,
the boiler could operate just the same (but only temporarily).
Measure the voltage with suitable instruments; do not use a
phase tester screwdriver.
Key:
1 - Gas cock
2 - Biconical ring Ø 18
3 - Nut
4 - Gas pipe
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