Antifreeze Protection; Gas Connection; Hydraulic Connection; Electrical Connection - Immergas CAESAR ECO 11 Instructions And Warnings

1.3 ANTIFREEZE PROTECTION.

Minimum temperature. If the water heater
is installed in a place where the temperature
falls below 0°C, the connection pipes must be
insulated and, in the event there is no gas (or
the water heater goes into no ignition block), the
appliance can freeze.
To prevent the risk of freezing follow the instruc-
tions below:
- Protect the domestic hot water circuit 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 and
follow 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 elec-
tricity power supply circuits;
- the main switch is on;
- the antifreeze kit is installed correctly;
- the connection pipes are insulated.
In these conditions the water heater is protected
against freezing to temperature of -15°C.
The warranty does not cover damage due to inter-
ruption of the electrical power supply and failure
to comply with that stated on the previous page.
Power cable

1.4 GAS CONNECTION.

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). It is
also important to check the dynamic pressure
of the mains (methane or LPG) used to supply
the water heater, which must comply with EN
437 and its attachment, as insufficient levels may
reduce generator output and cause discomfort
to the user.
Ensure correct gas cock connection. The gas sup-
ply pipe must be suitably dimensioned according
to current regulations in order to guarantee cor-
rect gas flow rate to the burner even in conditions
of maximum generator output and to guarantee
appliance efficiency (technical specifications).
The coupling system must conform to standards
in force (EN 1775).
Fuel gas quality. The appliance was designed to
operate with combustible gas free of impurities;
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 calorific value of
the mixture delivered to the appliance, with
subsequent change in its performance.
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1.5 HYDRAULIC CONNECTION.

Attention: 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 residue 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.
Attention: to preserve the duration and features
of appliance efficiency, in the presence of water
whose features can lead to the deposit of lime
scale, it is necessary to install the "polyphosphate
dispenser" kit.

1.6 ELECTRICAL CONNECTION.

The "Caesar Eco" water heater has an IPX5D pro-
tection 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.
Attention: the manufacturer 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 technical reference standards.
Also ensure that the electrical installation corre-
sponds 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 cable must be
connected to a 230V ±10% / 50Hz mains, respect-
ing L-N polarity and the earthing connection
this network must have a multi-pole circuit breaker
with Class III overvoltage category. If the power
supply cable is damaged, it must be replaced by a
special cable or assembly, which are only available
from the manufacturer or its After-sales Service. It is
recommended to contact a qualified company (e.g.
the Authorised After-Sales Technical Assistance
Service) for replacement to avoid a hazard. The
power cable must be laid as shown (Fig. 4).
If the network fuse on the connection terminal
block needs replacing, this must also be done by
qualified personnel: use a 3.15 A fast fuse. For
the main power supply to the appliance, 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.
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