Connections - Immergas HE COMBI INTERNAL Manual

1.3
Minimum temperature -5°C.
standard with an anti-freeze function that
activates the pump and burner when the system
water temperature in the boiler falls below 4°C.
- the boiler is correctly connected to gas and
electricity power supply circuits;
- the boiler is powered constantly;
- the boiler is not in no ignition block (Par. 2.5);
- the boiler essential components are not faulty.
In these conditions the boiler is protected against
freezing to an environmental temperature of -5°C.
Minimum temperature -15°C. If the boiler is
installed in a place where the temperature falls
below -5°C and in the event there is no gas, or
the boiler goes into ignition block, the appliance
may freeze.
To prevent the risk of freezing follow the
instructions below:
- Protect the central heating circuit from
freezing by introducing a good quality
anti-freeze liquid (speci cally for central
heating systems), carefully following the
manufacturer's instructions regarding the
percentage necessary with respect to the
minimum temperature required for preserving
the system.
resistant to ethylene and propylene glycol-based
anti-freeze liquids.
For life and possible disposal, follow the
supplier's instructions.
- Protect the condensate drain trap and circuit
board against freezing by using an accessory
that is supplied on request (anti-freeze kit)
comprising two electric heating elements
the relevant cables and a control thermostat
(carefully read the installation instructions
contained in the accessory kit pack).
Boiler anti-freeze protection is thus ensured only if
- the boiler is correctly connected to gas and
electricity power supply circuits and powered;
-
In these conditions the boiler is protected against
freezing to temperature of -15°C.
e warranty does not cover damage due to
interruption of the electrical power supply and
failure to comply with that stated on the previous
page.
N.B.: if the boiler is installed in places where the
temperature falls below 0°C the domestic water
and heating attachment pipes must be insulated

1.4 CONNECTIONS.

Gas connection
Our boilers are designed to operate with Natural
Gas and LPG.
Before connecting the gas line, carefully clean
inside all the gas pipes to remove any residue that
make sure the gas corresponds to that for which
the boiler is prepared (see boiler data-plate).
for operation with the other type of gas (see
dynamic gas supply (NG or LPG) pressure
must also be checked according to the type used
in the boiler, which must be in compliance, as
and cause malfunctions.
supply pipe must be suitably dimensioned
according to current regulations in order to
in conditions of maximum generator output
speci cations). e coupling system must
conform to standards.
Fuel gas quality. e appliance has been
designed to operate with gas free of impurities;
otherwise 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
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
Hydraulic connection.
Attention:
Hunt Heating
Attention: in order not to void the warranty
before making the boiler connections, carefully
clean the heating system on the primary heat
exchanger (pipes, radiators, etc.) with Fernox
etc, to remove any deposits that could
compromise correct boiler operation.
A chemical treatment of the thermal system
water 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 to australian
codes using the couplings on the boiler template.
to a draining funnel. Otherwise, if the drain
manufacturer declines all responsibility.
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 having an
.
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 start-up, ensure that the condensate
can be correctly removed. Also, comply with
national and local regulations on discharging
waste waters. It must also have fall to the drain point.
N.B.:
the boiler.
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