Immergas CAESAR ECO 17 Instructions And Warnings
Instructions and warnings
Installer
User
Maintenance technician
IE
CAESAR ECO 17
Wall-hung instantaneous
water heaters
with sealed chamber (type C) and
fan assisted
or
open chamber (type B) and
fan assisted
*1.043165ENG*
*1.043165ENG*
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 scheduled maintenance contact Authorised Aer-Sales 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 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. .............................6
1.4 Gas connection. ....................................... 6
1.5 Hydraulic connection..............................7
1.6 Electrical connection. ............................. 7
1.7 Immergas ue systems. ...........................8
1.8 Tables of Resistance Factors and
Equivalent Lengths. .................................9
1.9 Concentric horizontal kit installation. 10
1.10 Concentric vertical kit installation. .....10
1.11 Separator kit installation. ......................11
1.12 Ducting of ues or technical slots. ......12
1.13 Installation of boiler type B with open
chamber and fan assisted (optional). .. 12
1.14 Flue exhaust to ue/chimney. .............. 12
1.15 Flues, chimneys and chimney pots. ....12
1.16 Gas system start-up. ..............................12
1.17 Water heater start up (ignition). ..........12
1.18 Procedure for rst ignition,
preparation to use the appliance. ......... 13
1.19 Kits available on request. ...................... 13
1.20 Water heater components. .................... 14
2 Instructions for use and maintenance 15
2.1 Cleaning and maintenance. ..................15
2.2 General warnings. .................................. 15
2.3 Quick appliance operation guide. ........15
2.4 Control panel. ........................................16
2.5 Faults and screen displays.....................16
2.6 Emptying the water heater. ................... 17
2.7 Anti-freeze protection (optional). .......17
2.8 Cleaning the case. .................................. 17
2.9 Decommissioning. .................................17
2.10 Gas system not used for periods
over 12 months. .....................................17
3 Check and maintenance .......................18
3.1 Hydraulic diagram. ................................18
3.2 Wiring diagram. .....................................19
3.3 Service Menu. .........................................20
3.4 Possible problems and their causes. ....22
3.5 Converting the water heater
to other types of gas...............................22
3.6 Solar panels coupling function. ...........23
3.7 Check the network pressure
(minimum power supply pressure -
only with appliances operating
with methane). .......................................24
3.8 Yearly appliance check
and maintenance. ...................................24
3.9 Casing removal. .....................................25
3.10 Combustion parameters. ......................26
3.11 Technical data. .......................................26
3.12 Product che (in compliance
with Regulation 812/2013). ..................27
3.13 Parameters for lling
in the package che. ..............................28
5 cm 5 cm
WATER HEATER
1
INSTALLATION
1.1 INSTALLATION
RECOMMENDATIONS.
e water heater has 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 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).
By varying the type of installation the classication of the water heater also varies, precisely:
- Type B water heater22 if installed using the
relevant terminal for air intake directly from
the room in which the water heater has been
installed.
- Type C water heater if installed using concen-
tric pipes or other types of pipes envisioned for
the sealed chamber water heaters for intake of
air and expulsion of fumes.
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 21 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 installed inside or between cabinets,
ensure sufficient space for normal servicing;
therefore, leave clearance of at least 5 cm between
the water heater casing and the vertical sides of
the cabinet. Leave adequate space above and
below the water heater for possible water and
ue removal connections (Ref. Fig. 2).
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 and built for
installation inside buildings.
- Installation of gas appliances, ue exhaust
pipes and combustion air intake pipes is
forbidden in places with a re risk (for example: garages, closed parking stalls), and
in potentially dangerous places.
- Installation on the vertical projection of
cooking hobs is forbidden.
- Installation is forbidden in places/rooms
that constitute public areas of apartment
buildings, internal stairways or other escape
routes (e.g. oor landings, entrance halls,
etc.).
- Installation is also forbidden in places/rooms
that constitute public areas of apartment
buildings such as cellars, entrance halls, attics,
los, etc., unless otherwise provided for by
local regulations in force.
- It is forbidden to install the water heater
inside a closed recessed frame (e.g. Omni
Container).
- e appliance was designed to be installed in
indoor and protected places.
- It must also be installed in an environment
in which the temperature cannot fall below
0°C. It must not be exposed to atmospheric
agents.
If the water heater is installed in a place whose
temperature drops below 0°C, it is compulsory
to use the antifreeze accessory that provides for
adequate protection down to -15°C.
YES
- It is prohibited to obstruct the air intake
and aeration grids where the appliance is
installed.
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 from hollow brick or block,
partitions with limited static properties, or in any
case walls other than those indicated, a static test
must be carried out to ensure adequate mount.
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.
NO
1
INSTALLERUSER
MAINTENANCE TECHNICIAN
20 cm
2
5
1.2 MAIN DIMENSIONS.
Caesar Eco 17
INSTALLERUSER
A
A/S
A A/S
CONNECTIONS
GAS DOMESTIC HOT WATER
G AC AF
3/4” 1/2” 1/2”
Key:
A
A/S
AC - Domestic hot water outlet
AF - Domestic hot water inlet
G - Gas supply
V - Electrical connection
A - Intake
S - Exhaust
A/S - Intake/Exhaust
3
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 instructions 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
MAINTENANCE TECHNICIAN
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 electricity 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.
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.
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.
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.
6
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 eciency, 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.
e “Caesar Eco” 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 specications as shown on the water heater data-plate.
Water heaters are supplied complete with an
“X” type power cable without plug. e power
cable must be connected to a 230V ±10% / 50Hz
mains, respecting 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 Aer-sales Service. It is recommended to
contact a qualied company (e.g. the Authorised
After-Sales Technical Assistance Service) for
replacement to avoid a hazard. e 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
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
Power cable
4
MAINTENANCE TECHNICIAN
7
1.7 IMMERGAS FLUE SYSTEMS.
1
1
14
0 2 4 6 8 10 12 14 16 18 20 22 24
Immergas supplies various solutions separately
from the water heaters regarding the installation of
air intake terminals and ue extraction, which are
fundamental for water heater operation.
Attention: e water heater must only be installed
together with an original Immergas air intake and
ue gas exhaust system, in compliance with the
standards in force. is system can be identied
by an identication mark and special distinctive
marking bearing the note "not for condensing
boilers".
INSTALLERUSER
e ue exhaust pipes must not be in contact with
or be near to ammable materials. Moreover, they
must not pass through buildings or walls made of
ammable material.
• Positioning of double lip seals. For correct posi-
tioning of lip seals on elbows and extensions, follow
the assembly direction (Fig. 5).
• Coupling extension pipes and concentric
elbows. To install snap-fit extensions with
other elements of the ue extraction elements
assembly, follows:
Fit the concentric pipe or elbow with the male
side (smooth) on the female section (with lip
seal) to the end stop on the previously installed
element. is will ensure sealing and joining of
the elements correctly.
Attention: if the exhaust terminal and/or
concentric extension pipe needs shortening,
consider that the internal duct must always
protrude by 5 mm with respect to the external
duct.
• N.B.: for safety purposes, do not obstruct the
water heater intake-exhaust terminal, even
temporarily.
• N.B.: when installing horizontal pipes, a min-
imum inclination towards the water either of
3% must be maintained and a section clamp
with plug must be installed every 3 metres.
• Diaphragm installation. For proper water
heater operation, a diaphragm must be installed
on the outlet of the sealed chamber and before
the exhaust pipe (Fig. 6).
N.B.: the diaphragm is supplied as per standard
with the water heater.
e head loss of the
90° bend coming
out from the appliance must NOT be
calculated
Duct length/metres
Maximum completed length
5
6
7
duct length [m]
type of exhaust
B22
Type C
d.60/100
horizontal
Type C
d.60/100
vertical
Type C
d.80/80
MAINTENANCE TECHNICIAN
Attention: if installation requires signicant ue exhaust sections, it is necessary to consider the formation of condensate and thus use the “blue series”
insulated type of ue.
excluding the 90°
outlet bend from the
appliance.
Ref. g. 7
up to 4 46
from 8 to 12 none
up to 1 46
from 1.6 to 3.2 none
up to 2 46
from 2.6 to 4.2 none
3+3 46
from 3+3 to 6+6 48
from 6+6 to 9+9 none
ue gas
diaphragm
[d. mm]
head loss of
every additional
bend
45° 90°
1.3 m 1.8 mfrom 4 to 8 48
1 m 1.4 mfrom 1 to 1.6 48
1 m 1.4 mfrom 2 to 2.6 48
1.3 m 1.8 m
without diaphragm - with a 48 diam. diaphragm - with a 46 diam. diaphragm
With separate ducts having dierent lengths
2
0
8
6
4
Length of ue exhaust pipe (m)
2
0
Air intake pipe length (m)
Caesar Eco 17
8
1.8 TABLES OF RESISTANCE FACTORS
AND EQUIVALENT LENGTHS.
TYPE OF DUCT
Concentric pipe Ø 60/100 m 1
Terminal complete with intake-exhaust
horizontal concentric Ø 60/100
Intake-exhaust terminal
horizontal concentric Ø 60/100
Intake-exhaust terminal
vertical concentric Ø 60/100
Pipe Ø 80 m 1 (with and without insulation)
Complete intake terminal Ø 80 m 1
(with or without insulation)
Length
in m of concentric pipe
Ø 60/100
m 1
m 2.8
m 1.9
m 2.5
m 0.1 Intake m 1.0
m 0.2 Exhaust m 1.0
m 0.3 Intake m 2.2
Length
in metres
of pipe
Ø 80
Intake m 7.1
Exhaust m 5.5
Intake m 20
Exhaust m 15
Intake m 14
Exhaust m 10.6
Intake m 18
Exhaust 14
INSTALLERUSER
Intake terminal Ø 80
Exhaust terminal Ø 80
Split parallel Ø 80
from Ø 60/100 to Ø 80/80
m 0.2 Intake m 1.3
m 0.1 Exhaust m 0.8
Intake m 3.8
m 0.5
Exhaust m 2.9
MAINTENANCE TECHNICIAN
9
1.9 CONCENTRIC HORIZONTAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
Installation of this terminal is governed by current technical regulations.
is terminal is connected directly to the outside
of the building for air intake and ue exhaust. e
horizontal kit can be installed with the rear, right
side, le side or front outlet.
• External grid. e Ø 60/100 intake/exhaust
INSTALLERUSER
terminal, if properly installed, is pleasant to
look at on the outside of the building. Make
sure that the external silicone wall sealing plate
is properly inserted in the wall.
Horizontal intake-exhaust kit Ø 60/100. Kit
assembly (Fig. 8): install the bend with ange
(2) onto the central hole of the water heater
inserting the gasket (1) and tighten using the
screws included in the kit. Couple the concentric
terminal pipe Ø 60/100 (3) with the male end
(smooth) into the female end (with lip seals)
of the bend (2) up to the stop, making sure that
the internal and external wall sealing plate have
been tted, this will ensure sealing and joining
of the kit elements.
• Extensions for Ø 60/100 horizontal kit (Fig. 9).
e kit with this conguration can be extended
up to a max. horizontal length of 3.2 m includ-
ing the terminal with grid and excluding the
concentric bend leaving the water heater. In this
case the special extensions must be requested.
1.10 CONCENTRIC VERTICAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
Concentric vertical intake and exhaust kit. is
vertical terminal is connected directly to the outside of the building for air intake and ue exhaust.
N.B.: the vertical kit with aluminium tile enables
installation on terraces and roofs with a maximum slope of 45% (approx 25°) and the height
between the terminal cap and half-shell (374
mm) must always be respected.
Vertical kit with aluminium tile Ø 60/100.
To use this kit one must use the xing plate kit
60/100 (sold separately).
Kit assembly (Fig. 10): install the concentric
ange (2) on the central hole of the water heater
inserting the gasket (1) and tighten using the
screws in the kit. Fit the male end (smooth) of the
adapter (3) into the female end of the concentric
ange (2). Imitation aluminium tile installation.
Replace the tile with the aluminium sheet (5),
shaping it to ensure that rainwater runs off.
Position the xed half-shell (7) and insert the intake-exhaust pipe (6). Fit the Ø 80/125 concentric
terminal pipe with the male end (6) (smooth) to
the female end of the adapter (3) (with lip gasket)
up to the stop; making sure that the wall sealing
plate (4) has been tted, this will ensure sealing
and joining of the elements making up the kit.
• Extensions for vertical kit Ø 60/100 (Fig. 11).
e kit with this conguration can be extended to a max. straight vertical length of 4.2 m,
including the terminal. This configuration
corresponds to a resistance factor of 100. In
this case specic extensions must be requested.
2
1
3
e kit includes:
N° 1 - Gasket (1)
N° 1 - Concentric bend Ø 60/100 (2)
N° 1 - Int./exhaust concentric terminal Ø 60/100 (3)
N° 1 - Internal wall sealing plate (4)
N° 1 - External wall sealing plate (5)
MAINTENANCE TECHNICIAN
7
6
5
4
3
2
1
4
5
e xing plate kit includes:
N° 1 - Gasket (1)
N° 1 - Female concentric
ange (2)
e Kit includes:
N° 1 - Concentric intake-
exhaust pipe
Ø 60/100 (3)
N° 1 - Wall sealing plate (4)
N° 1 - Aluminium tile (5)
N° 1 - Fixed half-shell (6)
N° 1 - Mobile half-shell (7)
C
12
MAXIMUM EQUIVALENT LENGTH 3200
N.B.: to calculate the equivalent lengths, refer to the table on page 8.
8 9
C
32
Max. 45%
MAXIMUM EQUIVALENT LENGTH 4200
N.B.: to calculate the equivalent lengths,
refer to the table on page 8.
10
C
12
C
32
11
10
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