Immergas CAESAR EXTRA 11, CAESAR EXTRA 14 Instructions And Warnings
Instructions and warnings
Installer
User
Maintenance technician
IE
CAESAR EXTRA
11-14
Wall-hung instantaneous water
heaters open chamber
and fan assisted for outdoors
(Type A2)
*1.042039ENG*
*1.042039ENG*
Dear Customer,
Congratulations for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas Customer,
you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your water heater. Read the following pages
carefully: you will be able to draw useful tips on the proper use of the device, compliance with which will conrm your satisfaction with the Immergas product.
For assistance and routine maintenance, contact Authorised Service Centres: they have original spare parts and are specically trained directly by the manufacturer.
General warnings
All Immergas products are protected with suitable transport packaging.
e material must be stored in a dry place protected from the weather.
e instruction booklet is an integral and essential part of the product and must be given to the new user in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instructions manual provides technical information for installing Immergas water heaters. As for the other issues related to water heater installation (e.g.
safety in the work site, environment protection, injury prevention), it is necessary to comply with the provisions of the regulations in force and the principles
of good practice.
Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by professionally
qualied sta, intended as sta with specic technical skills in the system sector, as envisioned by the Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kits and devices can cause unexpected problems for people,
animals and objects. Read the instructions provided with the product carefully to ensure proper installation.
Maintenance must be carried out by skilled technical sta. e Authorised Aer-Sales Service represents a guarantee in terms of qualications and professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially
dangerous.
If errors occur during installation, operation and maintenance, due to non-compliance with technical laws in force, standards or instructions contained in
this book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damage and
the appliance warranty is invalidated.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manufacturing and aer-sales
assistance processes comply with the requirements of standard UNI EN ISO 9001:2015.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the appliance model
and the language of the country.
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without forewarning.
INDEX
USER page INSTALLER page MAINTENANCE TECHNICIAN page
1 Water heater installation .........................5
1.1 Installation recommendations. .............. 5
1.2 Main dimensions. ....................................6
1.3 Antifreeze protection. .............................7
1.4 Gas connection. ....................................... 7
1.5 Hydraulic connection..............................7
1.6 Electrical connection. ............................. 7
1.7 Gas system commissioning. ...................8
1.8 Water heater start up (ignition). ............8
1.9 Procedure for rst ignition,
preparation to use the appliance. ...........8
1.10 Water heater components. ...................... 9
2 Instructions for use and maintenance 10
2.1 Cleaning and maintenance. ..................10
2.2 General warnings. .................................. 10
2.3 Quick appliance operation guide. ........10
2.4 Control panel. ........................................11
2.5 Faults and screen displays.....................11
2.6 Emptying the water heater. ................... 12
2.7 Antifreeze protection. ...........................12
2.8 Cleaning the case. .................................. 12
2.9 Decommissioning. .................................12
2.10 Temporary deactivation. .......................12
2.11 Gas system not used for periods over 12
months. ...................................................12
3 Check and maintenance .......................13
3.1 Hydraulic diagram. ................................13
3.2 Wiring diagram. .....................................14
3.3 Service Menu. .........................................14
3.4 Possible problems and their causes. ....16
3.5 Converting the water heater to other
types of gas. ............................................16
3.6 Check the network pressure (minimum
power supply pressure - only with
appliances operating with methane). .. 17
3.7 Yearly appliance check
and maintenance. ...................................17
3.8 Casing removal. .....................................18
3.9 Combustion parameters. ......................19
3.10 Technical data. .......................................19
3.11 Product che (in compliance with
Regulation 812/2013). ...........................20
3.12 Parameters for lling
in the package che. ..............................21
WATER HEATER
1
INSTALLATION
1.1 INSTALLATION RECOMMENDATIONS.
e water heaters have been designed for wall
installation only, for the production of domestic
hot water in domestic and similar uses.
e place of installation of the appliance and
relative Immergas accessories must have suitable
features (technical and structural), such as to allow for (always in safe, ecient and comfortable
conditions):
- installation (according to the provisions of
technical legislation and technical regulations);
- maintenance operations (including scheduled,
periodic, routine and special maintenance);
- removal (outdoors in the place for loading and
transporting the appliances and components)
as well as their eventual replacement with
appliances and/or equivalent components.
In the case of wall installation the wall surface
must be smooth, without any protrusions or
recesses enabling access to the rear part. ey
are not designed to be installed on plinths or
oors (Fig. 1).
e water heater is classied as:
- Type A2 water heater, it does not require ue
exhaust/air intake systems.
Combustion products are exhausted from the
front grid.
Only professionally qualified companies are
authorised to install Immergas gas appliances.
Installation must be carried out according to
regulation standards, current legislation and in
compliance with local technical regulations and
the required technical procedures.
Attention: it is forbidden to install water heaters
removed from other systems. e manufacturer
declines all liability in the event of damage caused
by water heaters removed from other systems or
for any non-conformities with such equipment.
Attention: before commissioning the water
heater, if it is operated with LPG, make sure
parameters 2 and 13 on page 15 have been set
correctly.
Installation of the water heater when powered
by LPG must comply with the rules regarding
gases with a greater density than air (remember,
as an example, that it is prohibited to install systems powered with the above-mentioned gas in
rooms where the oor is at a lower quota that the
average external country one). Before installing
the appliance, ensure it has been delivered in
perfect condition; if in doubt, contact the supplier
immediately.
Packing materials (staples, nails, plastic bags,
polystyrene foam, etc.) constitute a hazard and
must be kept out of the reach of children. If
the appliance is enclosed between two pieces
of furniture, ensure sucient space for normal
servicing; therefore it is essential to leave the
minimum distances indicated in Fig. 2 and 3
around it.
Keep all ammable objects away from the appliance (paper, rags, plastic, polystyrene, etc.).
It is recommended not to position household
appliances under the water heater because they
could undergo damage in the case of leaks from
the hydraulic ttings. If this is not the case, the
manufacturer cannot be considered liable for
any damage caused to the household appliances.
For the aforementioned reasons, we recommend
not placing furnishings, furniture, etc. under the
water heater.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o and contact an
authorised company (e.g. the Authorised Technical Assistance centre, which has specically
trained sta and original spare parts). Do not
attempt to modify or repair the appliance alone.
Failure to comply with the above implies personal
responsibility and invalidates the warranty.
• Installation Standards:
- this water heater was designed for only
outdoor installation in a partially protected
place. Verify that the installation place is an
external environment with natural aeration
and ventilation, without stagnant areas for
combustion products, which must be quickly
dispersed by natural convection or by wind.
- It is absolutely prohibited to plug the combustion products discharge grid at the front of
the appliance and the combustion air intake
grid at the rear with rags, paper or anything
else.
- Do not install this appliance near a place
with an atmosphere containing grease and/
or corrosive dust or vapours.
- It is prohibited to install it inside any room
as the nominal heat input exceeds 15 kW.
- Installation on the vertical projection of
cooking hobs is forbidden.
- It is forbidden to install the water heater
inside a closed recessed frame (e.g. Omni
Container).
- e appliance was designed to be installed
only outdoors in a partially protected place.
- It must be protected against the direct action
of rain and snow, leaves or other agents.
- e water heater cannot be installed in the
vicinity of heat sources.
Attention: wall mounting of the water heater
must guarantee stable and ecient support for the
generator.
e fastening plugs (standard supply) are only to be
used to x the water heater to the wall; they only
ensure adequate support if inserted correctly (according to technical standards) in walls made of
solid or semi-hollow brick or block. In the case of
walls made of hollow bricks or blocks, partitions with
limited static properties, or in any case walls other
than those indicated, a static test must be carried out
on the mounting system.
YES
ese appliances are used to heat water to below
boiling temperature in atmospheric pressure.
ey must be connected to a DHW distribution
network suited to their performance and power.
450 mm
50 mm 50 mm
NO
1
2
350 mm
300 mm
3
INSTALLERUSER
MAINTENANCE TECHNICIAN
5
1.2 MAIN DIMENSIONS.
Caesar Extra 11
INSTALLERUSER
A
S
MAINTENANCE TECHNICIAN
Caesar Extra 14
CONNECTIONS
GAS DOMESTIC HOT WATER
G AC AF
3/4” 1/2” 1/2”
Key:
AC - Domestic hot water outlet
AF - Domestic hot water inlet
A
S
G - Gas supply
V - Electrical connection
A - Intake
S - Exhaust
4
6
1.3 ANTIFREEZE PROTECTION. Minimum temperature. If the water heater is
installed in places where the temperature falls below 0°C, the connection pipes must be insulated.
Antifreeze operation.
e antifreeze consists of electric resistances applied on the DHW circuit of the product and the
thermostat manages its activation and protects
the appliance at temperature as low as -15°C.
e thermostat triggers the resistances when the
temperature reaches 5°C. e resistances stay
on until the temperature rises to 15°C, at which
point the thermostat triggers and deactivates the
antifreeze circuit.
Water heater anti-freeze protection is thus ensured
only if:
- the water heater is correctly connected to electricity power supply circuits;
- the main switch is on;
- the connection pipes are insulated.
If there is no gas supply (or the water heater has an
ignition failure block) the appliance could freeze.
e warranty does not cover damage due to interruption of the electrical power supply and failure
to comply with that stated on page 5.
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 tting. Before connecting the gas line,
carefully clean inside all the fuel feed system
pipes to remove any residue that could impair
water heater eciency. Also make sure the gas
corresponds to that for which the water heater
is prepared (see water heater data-plate). If
dierent, 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 insucient levels may
reduce generator output and cause discomfort
to the user.
Ensure correct gas cock connection. e gas supply pipe must be suitably dimensioned according
to current regulations in order to guarantee correct gas ow rate to the burner even in conditions
of maximum generator output and to guarantee
appliance eciency (technical specications).
e coupling system must conform to standards
in force (EN 1775).
Fuel gas quality. e 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. is
can cause a variation in the caloric value of
the mixture delivered to the appliance, with
subsequent change in its performance.
- The water heaters working with LPG and
supplied with cylinders equipped with shut
o and adjustment devices, must be connected
so as to guarantee the safety of people and of
the surrounding environment: comply with
regulatory requirements, and we recommend
installing appropriate lters to capture impurities. If the appliance remains idle for a long
time, close the main gas supply cock, empty the
DHW circuit and disconnect power.
Attention: to empty the DHW circuit, always
close the domestic cold water inlet upstream of
the appliance. Open any domestic hot water tap
to discharge the pressure from the circuit.
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: water hotter than 50°C causes severe
burns.
Always check the water temperature before any use.
1.6 ELECTRICAL CONNECTION.
e “Caesar Extra” 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 ecient earthing
system as specied 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 ecient earth system or failure to comply with
the technical reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specifications as shown on the water heater
data-plate. Water heaters are supplied complete
with a “Y” type H 05 VVF 3 x 0,75 mm2 power
cable without plug. If the power cable is damaged,
contact a qualied company (e.g. the Authorised
Aer-Sales Technical Assistance Service) for its
replacement to avoid a hazard.
e power cable must be laid as shown (Fig. 6).
If the network fuse on the connection terminal
block needs replacing, this must also be done by
qualied 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.
INSTALLERUSER
MAINTENANCE TECHNICIAN
Power cable
5
6
7
1.7 GAS SYSTEM COMMISSIONING.
To start up the system, refer to the technical
standards in force.
In particular, for new gas systems:
- avoid presence of sparks or naked ames;
- bleed all air from the pipelines;
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force.
1.8 WATER HEATER START UP
INSTALLERUSER
IGNITION.
Attention: before commissioning the water
heater, if it is operated with LPG, make sure
parameters 2 and 13 on page 15 have been
set correctly.
Attention: risk of burns. Hot ue gas exits the
front grid. Make sure no person or object is
damaged by ue gas (Fig. 7).
To commission the water heater (the operations
listed below must only be performed by qualied
personnel and in the presence of sta only):
- check that the internal system is properly sealed
according to the specications set forth by
regulations in force;
- ensure that the type of gas used corresponds to
water heater settings;
- check connection to a 230V-50Hz power
mains, correct L-N polarity and the earthing
connection;
-check that there are no external factors that may
cause the formation of fuel pockets;
- switch the water heater on and ensure correct
ignition;
- ensure that the safety device intervenes in the
event of gas supply failure and check the relative
intervention time;
- check activation of the main switch located
upstream of the water heater;
- check that the intake/ exhaust grids are not
blocked.
e water heater must not be started up even if
only one of the checks should be negative.
1.9 PROCEDURE FOR FIRST IGNITION, PREPARATION TO USE THE APPLIANCE.
Starting the appliance
Aer checking everything, proceed as follows:
- power the water heater;
- open the gas cock installed upstream from the
water heater;
- open the water tap in the lower part of the water
heater;
Press the ignition button ( ). The screen
displays:
• e soware revision.
• e type of gas set up on the water heater (ng:
G20 - Lg: LPG).
• Appliance power in l/min.
• Test symbols (display all on).
Aer the procedure, before ignition, the screen
displays the symbols ( ) (Fig. 8).
Press the button ( ) to start the water heater.
e screen displays the value of the set temperature, the symbol ( ) (in the event of hot water
ow rate in progress) and the symbol (in the
event of burner operation) ( ) (Fig. 9).
Regulation of the water temperature
e water temperature can be set within a range
of 37 and 60°C.
- Turn the ignition button clockwise to increase
the temperature and anticlockwise to decrease
it. e symbol ( ) ashes for 5 seconds and
the screen displays the new temperature set.
Attention: water hotter than 50°C causes severe
burns. Always check the water temperature before any use.
Appliance switch-o
- Press and hold the water heater switch-off
button ( ) for approximately 5 seconds;
- as soon as the symbols ( ) start ashing,
release the button;
- the appliance will go OFF and the screen will
display the xed symbols ( ) (Fig. 8).
From this point on, the appliance is inactive
(stand-by).
To restart the water heater again, press the ignition button ( ).
8
9
MAINTENANCE TECHNICIAN
7
8
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