Immergas ZEUS 24 Superior, Instruction Booklet And Warning

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1.3 ATTACHMENTS.
Gas attachment (II
2H3+
category appliance).
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-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 according to the type used
in the boiler, 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 to the boiler even
in conditions of max. generator output and
to guarantee appliance efficiency (technical
specifications). The coupling system must
conform to standards.
Combustible 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. This
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
Hydraulic attachment.
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.
Water connections must be made in a rational way
using the couplings on the boiler template. The
boiler safety valve outlet must be connected to a
discharge funnel. Otherwise, the manufacturer
declines any responsibility in case of flooding if
the drain valve cuts in.
Important: to preserve the life and efficiency of the
domestic hot water exchanger, it is recommended
to install the “polyphosphate proportioner” kit in
the presence of water whose characteristics can
give rise to scale deposits (in particular, and as
an example, the kit is recommended when water
hardness is higher than 25 French degrees).
Electrical connection
. The “Zeus kW” boiler
has an IPX4D protection rating for the entire
appliance. Electrical safety of the unit is reached
when it is correctly connected to an efficient
earthing system as specified by current safety
standards.
Important
: Immergas S.p.A. declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an
efficient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specifications as shown on the boiler data-plate.
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 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 qualified technician (e.g.
the Immergas After-Sales Technical Assistance
Service).
The 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.
For the main power supply to the appliance,
never use adapters, multiple sockets or extension
leads.