Immergas CAESAR 14 3 E, Super CAESAR 17 3 E Instruction Booklet And Warning
CAESAR 14 3 E
Super CAESAR 17 3 E
*1.032004IE*
Instruction booklet and
warning
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INSTALLATORUSERTECHNICIAN
Dear Client,
Our compliments 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 suggestions regarding the correct use of the appliance, the respect of which, will conrm
your satisfaction for the Immergas product.
For any interventions or routine maintenance contact Immergas Authorised Centres: these have original spare parts and boast of specic preparation directly
from the manufacturer.
General recommendations
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of owne rship.
It must be kept well and consulted carefully, as all of the warnings supply important indications for safety in the installation, use and maintenance stages.
Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by professionally
qualied sta, intending sta with specic technical skills in the plant sector, as envisioned by the Law.
Incorrect installation can cause injury to persons and animals and damage to objects, for which the manufacturer is not liable.
Maintenance must be carried out by skilled technical sta. e Immergas Authorised Aer-sales Service represents a guarantee 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, running and maintenance, due to the non compliance of 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
damages and the appliance warranty is invalidated.
For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas site at the
following address: www.immergas.com
DECLARATION OF CONFORMITY
For the purpose and eect of the 2009/142/CE Gas Appliance Directive, 2004/108/CE EMC Directive and 2006/95/CE Low Voltage Directive.
e Manufacturer: Immergas S.p.A. v. Cisa Ligure n° 95 42041 Brescello (RE)
DECLARES THAT: the Immergas water heaters model:
Caesar 14 3 E and Super Caesar 17 3 E
is in compliance with the same European Community Directives
Mauro Guareschi
Research & Development Director
Signature:
INDEX
USER page
Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without forewarning.
INSTALLER page TECHNICIAN page
1 Water heater installation ..........................4
1.1 Installation recommendations. ................4
1.2 Main dimensions. .....................................4
1.3 Anti-freeze protection. .............................5
1.4 Connections. ..............................................5
1.5 Immergas ue systems. ............................6
1.6 Outdoor installation in partially protected
area. ............................................................. 6
1.7 Indoor installation. ...................................9
1.8 Flue exhaust to ue/chimney. ................ 12
1.9 Ducting of ues or technical
slots. ..........................................................12
1.10 Flues, chimneys and chimney caps. ...... 12
1.11 Gas system start-up. ................................12
1.12 Water heater start up (ignition). ............12
1.13 Kits available on request. ........................12
1.14 Water heater components. .....................13
2 Instructions for use and maintenance. . 14
2.1 Cleaning and maintenance. ...................14
2.2 General warnings. ...................................14
2.3 Control panel. .......................................... 14
2.4 Use of the water heater. ..........................15
2.5 Troubleshooting. .....................................15
2.6 Information menu. .................................. 15
2.7 Switch-o of the water heater. .............. 15
2.8 Emptying the water heater. ....................15
2.9 Anti-freeze protection (optional). .........15
2.10 Case cleaning. ..........................................15
2.11 Decommissioning. ..................................15
3 Controls and maintenance. ....................16
3.1 Hydraulic diagram. ................................. 16
3.2 Wiring diagram. ...................................... 17
3.3 Troubleshooting. .....................................17
3.4 Converting the water heater to other
types of gas. ..............................................17
3.5 Checks following conversion to another
type of gas. ................................................17
3.6 Possible adjustments ...............................18
3.7 Programming the P.C.B. .........................18
3.8 Automatic slow ignition function with
timed ramp delivery. ...............................18
3.9 Solar function. .........................................19
3.10 Solar panels coupling function. .............19
3.11 Yearly appliance check and maintenance.
19
3.12 Casing removal. .......................................20
3.13 Variable heat output. ............................... 21
3.14 Combustion parameters. ........................22
3.15 Technical data. .........................................23
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INSTALLATORUSERTECHNICIAN
1
WATER HEATER
INSTALLATION
1.1 INSTALLATION
RECOMMENDATIONS.
e water heaters have been designed for wall
installation only; they must be used for the
production of domestic hot water and similar
purposes. In the case of wall installation the wall
surface must be smooth, without any protrusions
or recesses enabling access to the rear part. ey
have NOT been designed to be installed on
plinths or oors (Fig. 1-1).
By varying the type of installation the
classification of the water heater also varies,
precisely:
- Water heater type B
22 if installed without the
2 intake caps and with the top cover kit
-
Type C water heater if installed using concentric
pipes or other types of pipes envisioned for the
sealed chamber water heaters for intake of air
and expulsion of ue gases.
Only professionally qualified heating/
plumbing technicians are authorised to install
Immergas gas appliances. Installation must
be carried out according to the standards,
current legislation and in compliance with local
technical regulations and the required technical
procedures. 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 that it is 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 it is advisable to leave clearance of at
least 3 cm between the water heater casing and
the vertical sides of the cabinet. Leave adequate
space above the water heater for possible water
and ue removal connections.
Keep all flammable 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.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o immediately
and contact a qualified technician (e.g. the
Immergas Technical Aer-Sales 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 regulations:
- this water heater can be installed outside in a
partially protected area. A partially protected
location is one in which the water heater
is not exposed to the direct action of the
weather (rain, snow, hail, etc..).
- Installation in places with a fire risk is
prohibited (for example: garages, box), gas
appliances and relative ue ducts, ue exhaust
pipes and combustion air intake pipes.
- Installation is prohibited on the vertical
projection of the cooking surface.
- Installation is also prohibited in places/
environments that constitute common parts
of oce condominiums such as stairs, cellars,
entrance halls, attics, los, escape routes,
etc. if they are not located inside technical
compartments under the responsibility of
each individual building and only accessible
to the user (for the features of the technical
compartments, see the Reference Standard).
Important: Wall mounting of the water heater
must guarantee stable and ecient support for
1.2 MAIN DIMENSIONS.
the generator.
e plugs (standard supply) are to be used only in
conjunction with the mounting brackets or xing
template 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 support.
N.B.: the hex head screws supplied in the blister
pack are to be used exclusively to x the relative
mounting bracket to the wall.
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.
Height
(mm)
Width (mm)
(L)
Depth
(mm)
630
Caesar 14 3 E = 375
Super Caesar 17 3 E = 420
250
CONNECTIONS
GAS DOMESTIC HOT WATER
GACAF
3/4” 1/2” 1/2”
Key:
AC - Domestic hot water outlet
AF - Domestic hot water inlet
G - Gas supply
V - Electrical connection
YES NO
1-3
Cavo di alimentazione
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INSTALLATORUSERTECHNICIAN
1.3 ANTIFREEZE 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 ecient.
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
2H3+
).
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). e dynamic gas
supply (methane or LPG) pressure must also be
checked according to the type used in the water
heater, as insucient 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 ow to the burner even
in conditions of maximum generator output
and to guarantee appliance eciency (technical
specifications). The coupling system must
conform to standards.
Fuel gas quality. e appliance has been designed
to operate with gas free of impurities; otherwise it
is advisable to t special lters 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. is
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
eciency 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 soeners for powers > 100 kW
Electrical connection: e “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
ecient earthing system as specied 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 ecient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specications as shown on the water heater dataplate. Water heaters are supplied complete with
an “X” type power cable without plug. e power
supply cable must be connected to a 230V ±10%
/ 50Hz mains supply respecting L-N polarity and
earth connection
is network must also
have an omnipolar circuit breaker with class III
over-voltage category. When replacing the power
supply cable, contact a qualied technician (e.g.
the Immergas Aer-Sales Technical Assistance
Service). e 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,
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.
Power supply cable
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INSTALLATORUSERTECHNICIAN
1.6 OUTDOOR INSTALLATION IN
PARTIALLY PROTECTED AREA.
N.B.: a partially protected area is one in which the
appliance is not exposed to the direct action of the
weather (rain, snow, hail, etc..)..
• Conguration type B, open chamber and
forced draught.
Using the relevant cover kit direct air intake is
possible (Fig. 1-7) and ue gases are exhausted
into a single ue or directly to the outside. In this
conguration it is possible to install the water
heater in a partially protected place.
In this conguration the water heater is classied
as type B
22
.
With this conguration:
- air intake takes place directly from the room
in which the appliance is installed (outdoor);
- the ue exhaust must be connected to its own
individual ue or channelled directly into the
external atmosphere.
The technical regulations in force must be
respected.
• Cover kit assembly (Fig. 1-6). Remove the
two plugs and the gaskets present from the two
lateral holes with respect to the central one.
Position the diaphragm on the discharge hole:
Caesar 14 3 E: Ø 45 present inn the water
heater.
Super Caesar 17 3 E: Ø 44 present in the
thermoformed kit.
Install the Ø 80 outlet ange on the central
hole of the water heater, taking care to insert
the gasket supplied with the kit and tighten
by means of the screws provided. Install the
upper cover, xing it using the screws and
relevant gaskets present in the kit. Fit the 90° Ø
80 curve with the male side (smooth) into the
female side (with lip seals) of the Ø 80 ange,
up to stop.Cut the gasket in the relevant groove
at the desired diameter (Ø 80), run it along the
curve and x it using the sheet steel plate. Fit
the male end (smooth) of the exhaust terminal
into the the female end of the bend 90° Ø 80,
making sure that the relevant wall sealing
plate is already tted; this will ensure hold and
joining of the elements making up the kit.
• Coupling of extension pipes. To install push-
tting extensions with other elements of the
flue extraction elements assembly, proceed
as follows: Couple the pipe or elbow with the
male side (smooth) in the female side (with lip
seal) to the end stop on the previously installed
element. is will ensure sealing eciency of
the coupling.
Max. length of exhaust duct. The flue pipe
(vertical or horizontal) can be extended to a max.
length of 12 straight metres (Fig. 1-21). To prevent
problems of ue gas condensate in the exhaust
pipe Ø 80, due to ue gas cooling through the
wall,the length of the pipe (not insulated) must
be limited to just 5 m.
Example of installation with direct vertical
terminal in partially protected location. When
the vertical terminal for direct discharge of
combustion products is used, a minimum gap
of 300 mm must be le between the terminal
and the balcony above. e height X+Y+Z+W
evaluated with respect to the balcony above,
must be equal to or more than 2000 mm. (Fig.
1-8). e term W must only be considered if the
balcony above has closed balustrade (W=0 if the
balustrade is open).
• Conguration without cover kit (water heater
type C).
By leaving the side plugs tted, it is possible
to install the appliance externally, in partially
covered places, without the cover kit. Installation
takes place using the Ø60/100 and Ø80/125
concentric horizontal intake/ exhaust kits. Refer
to the paragraph relative to indoor installation. In
this conguration the upper cover kit guarantees
additional protection for the water heater. It is
recommended but not compulsory.
1.5 IMMERGAS FLUE SYSTEMS.
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.
Important: the water heater must only be
installed together with an original Immergas
air intake and ue gas exhaust system. is
system can be identied by an identication
mark and special distinctive marking bearing
the note: “not for condensing boilers”.
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
positioning of lip seals on elbows and extensions,
follow the direction of assembly given in gure
(Fig. 1-4).
• Resistance factors and equivalent lengths.
Each ue extraction system component has
a Resistance Factor based on experimental
tests and specified in the table below. The
resistance factor for individual components is
independent from the type of water heater on
which it is installed or the actual dimensions.
It is, however, conditioned by the temperature
of the uids that pass through the pipe and
therefore varies according to applications for
air intake or flue exhaust. Each individual
component has a resistance corresponding to
a certain length in metres of pipe of the same
diameter; the so-called equivalent length,
obtained from the ratio between the relative
Resistance Factors. All water heaters have an
experimentally obtainable maximum Resistance
Factor equal to 100.e maximum Resistance
Factor allowed corresponds to the resistance
encountered with the maximum allowed pipe
length for each type of Terminal Kit. This
information enables calculations to verify the
possibility of various congurations of ue
extraction systems.
Diaphragm installation. For correct functioning
of the water heater, a Ø 45 diaphragm must be
installed on the outlet of the sealed chamber and
before the intake and exhaust pipe for the “Caesar
14 3 E” model and a diaphragm of Ø 46 for the
“Super Caesar 17 3 E” model (Fig. 1-9).
N.B.: the diaphragm is supplied as per standard
with the water heater.
Upper lid
1-7
1-8
B22 B22
B22
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INSTALLATORUSERTECHNICIAN
e terminal kit includes:
N° 1 - Gasket
N° 1 - Exhaust ange Ø 80
N° 1 - Bend 90° Ø 80
N° 1 - Exhaust pipe Ø 80
N° 1 - Wall sealing plate
e cover kit includes:
N° 1 - Heat moulded cover
N° 1 - Ø 44 discharge diaphragm
N°1 - Gasket clamping plate
N° 1 - Gasket
* e values for maximum length are considered
with 1 metre of exhaust pipe and the remaining
on intake.
* e values for maximum length are considered
with 1 metre of exhaust pipe and the remaining
on intake.
Diaphragm
Extension in meters
pipe Ø 60/100 horizontal
Ø 46 From 0 to 1
NONE Exceeding 1
Diaphragm
Extension in meters
pipe Ø 60/100 horizontal
Ø 45 From 0 to 1
NONE Exceeding 1
Diaphragm
Pipe extension in metres Ø
60/100 vertical
Ø 46 From 0 to 2.2
NONE Exceeding 2.2
Diaphragm
Pipe extension in metres Ø
60/100 vertical
Ø 45 From 0 to 2.7
NONE Exceeding 2.7
Diaphragm
*Extension in metres
vertical pipe Ø 80
without bends
Ø 46 From 0 to 22
NONE Exceeding 22
Diaphragm
*Extension in metres
vertical pipe Ø 80
without bends
Ø 45 From 0 to 25
NONE Exceeding 25
Diaphragm
*Extension in meters
horizontal pipe Ø 80 with
two bends
Ø 46 From 0 to 17
NONE Exceeding 17
Diaphragm
*Extension in meters
horizontal pipe Ø 80 with
two bends
Ø 45 From 0 to 20
NONE Exceeding 20
Caesar 14 3 E discharge diaphragm. Caesar 17 3 E Super discharge diaphragm.
INTAKE
COVER KIT
VERTICAL TERMINAL KIT
FOR DIRECT DRAINING
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INSTALLATORUSERTECHNICIAN
Tables of Resistance Factors and Equivalent Lengths.
DUCT TYPE
Resistance
Factor
(R)
Equivalent
length in m of concentric pipe
Ø 60/100
Equivalent
length
in m of pipe
Ø 80
Concentric pipe Ø 60/100 m 1
Intake and
Exhaust 16.5
m 1
Intake m 7.1
Exhaust m 5.5
Concentric bend 90° Ø 60/100
Intake and
Exhaust 21
m 1.3
Intake m 9..1
Exhaust m 7.0
Concentric bend 45° Ø 60/100
Intake and
Exhaust 16.5
m 1
Intake m 7.1
Exhaust m 5.5
Terminal complete with concentric horizontal
intake-exhaust Ø 60/100
Intake and
Exhaust 46
m 2.8
Intake m 20
Exhaust m 15
Concentric horizontal
intake- exhaust terminal Ø 60/100
Intake and
Exhaust 32
m 1.9
Intake m 14
Exhaust m 10.6
Concentric vertical
intake-exhaust terminal Ø 60/100
Intake and
Exhaust 41.7
m 2.5
Intake m 18
Exhaust 14
Pipe Ø 80 m 1 (with and without insulation)
Intake 2.3 m 0.1 Intake m 1.0
Exhaust 3 m 0.2 Exhaust m 1.0
Complete air intake terminal Ø 80 m 1
(with or without insulation)
Intake 5 m 0.3 Intake m 2.2
Intake terminal Ø 80
Exhaust terminal Ø 80
Intake 3 m 0.2 Intake m 1.3
Exhaust 2.5 m 0.1 Exhaust m 0.8
Bend 90° Ø 80
Intake 5 m 0.3 Intake m 2.2
Exhaust 6.5 m 0.4 Exhaust m 2.1
Bend 45° Ø 80
Intake 3 m 0.2 Intake m 1.3
Exhaust 4 m 0.2 Exhaust m 1.3
Split parallel Ø 80
from Ø 60/100 to Ø 80/80
Intake and
Exhaust 8.8
m 0.5
Intake m 3.8
Exhaust m 2.9
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