Anti-Freeze Protection; Connections - Immergas CAESAR 14 3 E Instruction Booklet And Warning

1.3 ANTI-FREEZE PROTECTION.

Minimum temperature -15°C. If the water heater
is installed in a place where the temperature falls
below 0°C and in the event there is no gas (or
the water heater goes into ignition block), the
appliance can freeze.
To prevent the risk of freezing follow the instructions
below:
- 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).
Water heater anti-freeze protection is thus ensured
only if:
- the water heater is correctly connected to
electricity power supply circuits;
- main switch is inserted;
- the anti-freeze kit components are efficient.
In these conditions the water heater is protected
against freezing to temperature of -15°C.
The 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 water heater is installed in places
where the temperature falls below 0°C, the
heating attachment pipes must be insulated.
1.4 ATTACHMENTS.
Gas connection (Appliance category II
Our water heaters are designed to operate with
methane gas (G20) and LPG. Supply pipes must
be the same as or larger than the 3/4"G water
heater fitting. Before connecting the gas line,
carefully clean inside all the fuel feed system
pipes to remove any residue that could impair
water heater efficiency. Also make sure the gas
corresponds to that for which the water heater is
prepared (see water heater data-plate). If different,
the water heater 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 water
heater, 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 burner even
in conditions of maximum generator output
and to guarantee appliance efficiency (technical
specifications). The coupling system must
conform to standards.
Fuel 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 connection
Important: before connecting the water heater
and so as not to make the warranty null and void
on the DHW heat exchanger, wash the system
thoroughly (piping, etc.) in a way to remove
any residues that could compromise the good
functioning of the water heater.
Water connections must be made in a rational
way using the couplings on the water heater
template.
Important: to preserve the duration of appliance
efficiency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the "polyphosphate dispenser" kit
is recommended . On the basis of the Standards
in force, it is mandatory to treat the supply water
with temporary water hardness over or equal to
25 French degrees in the heating circuit and over
than or equal to 15 French degrees for DHW, using
conditioning chemicals for powers ≤ 100 kW or
with softeners for powers > 100 kW
Electrical connection: The "Caesar" water heater
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.
Important: Immergas S.p.A. declines any
responsibility for damage or physical injury
caused by failure to connect the water heater to
an efficient earth system or failure to comply with
the reference standards.
).
Also ensure that the electrical installation
2H3+
corresponds to maximum absorbed power
specifications as shown on the water heater data-
plate. Water heaters 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
have an omnipolar 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
(Fig. 1-3).
In the event of mains fuses replacement on the
connection board, use a 3.15A quick-blow fuses.
For the main power supply to the appliance,
5 - IE
never use adapters, multiple sockets or extension
leads.
N.B.: all water heater pipes must never be used
to earth the electric or telephone lines. Ensure
elimination of this risk before making the water
heater electrical connections.
This network must also
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Cavo di alimentazione
Power supply cable