Main Dimensions; Anti-Freeze Protection; Gas Connection - Immergas Caesar 14 4 ERP Instruction And Recomendation Booklet

1.2 MAIN DIMENSIONS.

1.3 ANTI-FREEZE PROTECTION.

Minimum temperature -15°C. If the water
heater is installed in a place where the tempera-
ture falls below 0°C and in the event there is no
gas (or the water heater goes into failed 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 the
installation instructions contained in the ac-
cessory kit pack).
Water heater anti-freeze protection is thus ensured
only if:
- the water heater is correctly connected to electric-
ity power supply circuits;
- the main switch is on;
- the antifreeze 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 inter-
ruption 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 heat-
ing attachment pipes must be insulated.

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 differ-
ent, the water heater must be converted for op-
eration 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, which must comply with the technical
standards in force, as insufficient levels can
reduce generator output and cause malfunctions.
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 technical
standards in force.
6
Height Width (mm)
(mm) (L)
Caesar 14 3 = 375
630
Super Caesar 17 3 = 420
CONNECTIONS
GAS DOMESTIC HOT WATER
G AC
3/4" 1/2"
Key:
AC - Domestic hot water outlet
AF - Domestic cold water inlet
G - Gas supply
V - Electrical connection
Fuel gas quality. The appliance was designed
to operate with combustible gas free of impuri-
ties; 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 heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
1-2
Depth (mm)
250
AF
1/2"