caesar 14 3 e super caesar 17 3 e

*1.032004ENG*
Instruction and
warning book
IE
CAESAR 14 3 E
SUPER CAESAR
17 3 E
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 qualified after-sales service, prepared and updated to guarantee constant efficiency 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 confirm
your satisfaction for the Immergas product.
For any interventions or routine maintenance contact Immergas Authorised Centres: these have original spare parts and boast of specific preparation directly
from the manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
The material must be stored in dry environments protected against bad weather.
The 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 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.
This instructions manual provides technical information for installing Immergas water heater. 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 specified in the regulations in force and
principles of good practice.
In compliance with legislation in force, the systems must be designed by qualified professionals, within the dimensional limits established by the Law. Installation
and maintenance must be performed in compliance with the regulations in force, according to the manufacturer’s instructions and by professionally qualified
staff, intending staff with specific technical skills in the plant sector, as envisioned by the Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals
and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by skilled technical staff. The Immergas Authorised After-sales Service represents a guarantee of qualifications and
professionalism.
The 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 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
DICHIARAZIONE CE DI CONFORMITA’
Under the “Gas Appliances” Directive 2009/142/EC, “Electromagnetic Compatibility (EMC)” Directive 2004/108/EC, “Boiler Efficiency” Directive
92/42/EC and “Low Voltage” Directive 2006/95/EC.
Mauro Guareschi
The Manufacturer: Immergas S.p.A. v. Cisa Ligure n° 95 42041 Brescello (RE)
Research & Development Director
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
Signature:
Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modifications to its technical and commercial
documents without forewarning.
INDEX
INSTALLERpage
1 Water heater installation........................... 5
1.1 Installation recommendations.................. 5
1.2 Main dimensions........................................ 5
1.3 Anti-freeze protection............................... 6
1.4Attachments................................................ 6
1.5 Immergas flue systems............................... 7
1.6 Outdoor installation in
partially protected area.............................. 7
1.7 Indoor installation...................................10
1.8 Flue exhaust to flue/chimney..................13
1.9 Ducting of flues or technical slots..........13
1.10 Flues, chimneys and chimney caps........13
1.11 Gas system start-up..................................13
1.12 Water heater start up (ignition)..............13
1.13 Kits available on request..........................13
1.14 Water heater components.......................14
USER
2
pag
Instructions for use and
maintenance.............................................15
2.1 Cleaning and maintenance.....................15
2.2 General warnings.....................................15
2.3 Control panel............................................15
2.4 Use of the water heater............................16
2.5 Fault and anomaly signals.......................16
2.6 Information Menu...................................16
2.7 Switch-off of the water heater. ...............16
2.8 Emptying the water heater......................16
2.9 Anti-freeze protection (optional)...........16
2.10 Case cleaning............................................16
2.11Decommissioning....................................16
MAINTENANCE TECHNICIAN page
3 Control and maintenance.......................17
3.1 Hydraulic Diagram..................................17
3.2 Wiring diagram........................................18
3.3Troubleshooting.......................................18
3.4 Converting the water heater to
other types of gas......................................18
3.5 Checks following conversion to
another type of gas...................................18
3.6 Possible adjustments................................19
3.7 Programming the P.C.B...........................19
3.8 Automatic slow ignition function
with timed ramp delivery........................19
3.9 Solar function...........................................20
3.10 Solar panels coupling function...............20
3.11 Yearly appliance check
and maintenance......................................20
3.12 Casing removal.........................................21
3.13 Variable heat power..................................22
3.14 Combustion parameters..........................23
3.15 Technical data...........................................24
- maintenance operations (including scheduled,
periodic, routine and special maintenance);
-removal (to 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. They
have NOT been designed to be installed on
plinths or floors (Fig. 1-1).
By var ying the type of installation the
classification of the water heater also varies,
precisely:
- Water heater type B22 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 flue gases.
Only professionally enabled companies 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
floor 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
•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 flue ducts, flue exhaust
pipes and combustion air intake pipes.
NO
Important: Wall mounting of the water heater
must guarantee stable and efficient support for
the generator.
The plugs (standard supply) are to be used only in
conjunction with the mounting brackets or fixing
template to fix 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 fix the relative
mounting bracket to the wall.
These appliances are used to heat water to below
boiling temperature in atmospheric pressure.
They must be connected to a DHW distribution
network suited to their performance and power.
-Installation is prohibited on the vertical
projection of the cooking surface.
1.2 MAIN DIMENSIONS.
1-2
Height
(mm)
YES
-Installation is also prohibited in places/
environments that constitute common parts
of office condominiums such as stairs, cellars,
entrance halls, attics, lofts, 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).
INSTALLER
1.1INSTALLATION
RECOMMENDATIONS.
The water heaters have been designed for wall
installation only; they must be used for the
production of domestic hot water and similar
purposes.
The place of installation of the appliance and
relative Immergas accessories must have suitable
features (technical and structural) such to allow
(always in safety, efficiency and comfortable
conditions):
- installation (according to the provisions of the
technical legislation and technical regulations);
space above the water heater for possible water
and flue removal connections.
Keep all flammable objects away from the
appliance (paper, rags, plastic, polystyrene, etc.).
Do not place household appliances underneath
the water heater as they could be damaged if
the safety valve intervenes, if the drain trap is
blocked, or if there are leaks from the hydraulic
connections; otherwise, the manufacturer cannot
be held responsible 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 off immediately
and contact an authorised company (e.g. the
Immergas Technical After-Sales Centre, which
has specifically trained staff 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.
USER
WATER HEATER
INSTALLATION
Key:
AC -
AF -
G -
V -
Domestic hot water outlet
Domestic hot water inlet
Gas supply
Electrical connection
1-1
5
630
GAS
G
3/4”
Width (mm)
Depth
(L)
(mm)
Caesar 14 3 E = 375
250
Super Caesar 17 3 E = 420
CONNECTIONS
DOMESTIC HOT WATER
AC
AF
1/2”
1/2”
MAINTENANCE TECHNICIAN
1
INSTALLER
1.3 ANTI-FREEZE 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 efficient.
MAINTENANCE TECHNICIAN
USER
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.
1.4ATTACHMENTS.
Gas connection (Appliance category II2H3+).
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). The dynamic gas
supply (methane or LPG) pressure must also be
checked according to the type used in the water
heater, as insufficient 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 flow to the burner even
in conditions of maximum generator output
and to guarantee appliance efficiency (technical
specifications). The coupling system must
conform to standards.
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.
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.
Water connections must be made in a rational
way using the couplings on the water heater
template.
In order to meet the system requirements established by the regulations in force in relation to
the pollution of drinking water, we recommend
installing the IMMERGAS anti-backflow kit to be
used upstream of the cold water inlet connection
of the water heater.
Important: to preserve the duration of appliance
efficiency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the “polyphosphate dispenser” kit
is recommended .
Electrical connection: The “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
efficient earthing system as specified 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 efficient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specifications as shown on the water heater dataplate. Water heaters are supplied complete with
an “X” type power cable without plug. The power
supply cable must be connected to a 230V ±10%
/ 50Hz mains supply respecting L-N polarity and
earth connection
This network must also
have an omnipolar circuit breaker with class III
over-voltage category. When replacing the power
supply cable, contact an authorised company (e.g.
the Immergas After-Sales Technical Assistance
Service). The 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.
Fuel gas quality. The appliance has been designed
to operate with gas free of impurities; otherwise it
is advisable to fit special filters 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.
1-3
-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.
Cavo supply
di alimentazione
Power
cable
6
Important: the water heater must only be
installed together with an original Immergas
air intake and flue gas exhaust system. This
system can be identified by an identification
mark and special distinctive marking bearing
the note: “not for condensing boilers”.
•Configuration type B, open chamber and
forced draught.
Positioning of double lip seals. For correct
positioning of lip seals on elbows and extensions,
follow the direction of assembly given in figure
(Fig. 1-4).
•Resistance factors and equivalent lengths.
Each flue 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 fluids 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.The 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 configurations of flue
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.
- the flue exhaust must be connected to its own
individual flue 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.
Example of installation with direct vertical terminal in partially protected location.
When the vertical terminal for direct discharge
of combustion fumes is used, a minimum gap
of 300 mm must be left between a terminal or
a balcony above. With installations under a
balcony, the X+Y+Z+W height evaluated with
regard to the balcony above must be equal to,
or more than, 2000 mm (Fig. 1-8). The term W
must only be considered if the balcony above has
closed balustrade (W=0 if the balustrade is open).
• Configuration without cover kit (water heater
type C).
By leaving the side plugs fitted, 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 configuration the upper cover kit guarantees
additional protection for the water heater. It is
recommended but not compulsory.
Super Caesar 17 3 E: Ø 44 present in the
thermoformed kit.
Install the Ø 80 outlet flange 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, fixing 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 flange,
up to stop.Cut the gasket in the relevant groove
at the desired diameter (Ø 80), run it along the
curve and fix 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 fitted; this will ensure hold and
joining of the elements making up the kit.
MAINTENANCE TECHNICIAN
The flue exhaust pipes must not be in contact with
or be near to flammable materials. Moreover,
they must not pass through buildings or walls
made of flammable material.
Using the relevant cover kit direct air intake is
possible (Fig. 1-7) and flue gases are exhausted
into a single flue or directly to the outside. In this
configuration it is possible to install the water
heater in a partially protected place.
In this configuration the water heater is classified
as type B22.
With this configuration:
-air intake takes place directly from the room
in which the appliance is installed (outdoor);
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 flue gas condensate in the exhaust
pipe Ø 80, due to flue gas cooling through the
wall,the length of the pipe (not insulated) must
be limited to just 5 m.
INSTALLER
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..)..
USER
1.5 IMMERGAS FLUE SYSTEMS.
Immergas supplies various solutions separately
from the water heaters regarding the installation
of air intake terminals and flue extraction, which
are fundamental for water heater operation.
•Coupling of extension pipes. To install pushfitting 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. This will ensure sealing efficiency of
the coupling.
1-4
1-5
Upper lid
7
INSTALLER
B22
B22
1-6
1-7
The terminal kit includes:
N° 1 - Gasket
N° 1 - Exhaust flange Ø 80
N° 1 - Bend 90° Ø 80
N° 1 - Exhaust pipe Ø 80
N° 1 - Wall sealing plate
USER
The cover kit includes:
N° 1 - Heat moulded cover
N° 1 - Ø 44 discharge diaphragm
N°1 - Gasket clamping plate
N° 1 - Gasket
MAINTENANCE TECHNICIAN
Caesar 14 3 E discharge diaphragm.
B22
1-8
VERTICAL TERMINAL KIT
FOR DIRECT DRAINING
Caesar 17 3 E Super discharge diaphragm.
Diaphragm
Extension in meters
pipe Ø 60/100 horizontal
Diaphragm
Extension in meters
pipe Ø 60/100 horizontal
Ø 45
From 0 to 1
Ø 46
From 0 to 1
NONE
Exceeding 1
NONE
Exceeding 1
Diaphragm
Pipe extension in metres Ø
60/100 vertical
Diaphragm
Pipe extension in metres Ø
60/100 vertical
Ø 45
From 0 to 2.7
Ø 46
From 0 to 2.2
NONE
Exceeding 2.7
NONE
Exceeding 2.2
Diaphragm
*Extension in metres
vertical pipe Ø 80
without bends
Diaphragm
*Extension in metres
vertical pipe Ø 80
without bends
Ø 45
From 0 to 25
Ø 46
From 0 to 22
NONE
Exceeding 25
NONE
Exceeding 22
Diaphragm
*Extension in meters
horizontal pipe Ø 80 with
two bends
Diaphragm
*Extension in meters
horizontal pipe Ø 80 with
two bends
Ø 45
From 0 to 20
Ø 46
From 0 to 17
NONE
Exceeding 20
NONE
Exceeding 17
*The values for maximum length are considered
with 1 metre of exhaust pipe and the remaining
on intake.
INTAKE
COVER KIT
1-9
8
*The values for maximum length are considered
with 1 metre of exhaust pipe and the remaining
on intake.
Tables of Resistance Factors and Equivalent Lengths.
Intake m 7.1
Intake and
Exhaust 16.5
m1
Intake and
Exhaust 21
m 1.3
Intake and
Exhaust 16.5
m1
Intake and
Exhaust 46
m 2.8
Intake and
Exhaust 32
m 1.9
Intake and
Exhaust 41.7
m 2.5
Intake 2.3
m 0.1
Intake m 1.0
Exhaust 3
m 0.2
Exhaust m 1.0
Intake 5
m 0.3
Intake m 2.2
Intake 3
m 0.2
Intake m 1.3
Exhaust 2.5
m 0.1
Exhaust m 0.8
Intake 5
m 0.3
Intake m 2.2
Exhaust 6.5
m 0.4
Exhaust m 2.1
Intake 3
m 0.2
Intake m 1.3
Exhaust 4
m 0.2
Exhaust m 1.3
Intake and
Exhaust 8.8
m 0.5
Exhaust m 5.5
Concentric bend 90° Ø 60/100
Intake m 9..1
Exhaust m 7.0
Concentric bend 45° Ø 60/100
Concentric horizontal
intake- exhaust terminal Ø 60/100
Concentric vertical
intake-exhaust terminal Ø 60/100
Pipe Ø 80 m 1 (with and without insulation)
Complete air intake terminal Ø 80 m 1
(with or without insulation)
Intake terminal Ø 80
Exhaust terminal Ø 80
Bend 90° Ø 80
Bend 45° 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
Split parallel Ø 80
from Ø 60/100 to Ø 80/80
Intake m 3.8
Exhaust m 2.9
9
USER
Terminal complete with concentric horizontal
intake-exhaust Ø 60/100
INSTALLER
Concentric pipe Ø 60/100 m 1
Equivalent
length
in m of pipe
Ø 80
MAINTENANCE TECHNICIAN
DUCT TYPE
Equivalent
length in m of concentric pipe
Ø 60/100
Resistance
Factor
(R)
INSTALLER
1.7 INDOOR INSTALLATION.
•Type C configuration, sealed chamber and
fan assisted.
Horizontal intake - exhaust kit Ø60/100. Kit
assembly (Fig. 1-10): install the bend with flange
(2) onto the central hole of the water heater
inserting the gasket (1) and tighten using the
screws in the kit. Couple the terminal pipe (3)
with the male end (smooth) into the female
end of the bend (with lip seals) up to the stop;
making sure that the internal wall sealing plate
and external wall sealing plate have been fitted,
this will ensure sealing and joining of the elements
making up the kit.
USER
Note: when the water heater is installed in areas
where very rigid temperatures can be reached,
a special anti-freeze kit is available that can be
installed as an alternative to the standard kit.
• Coupling extension pipes and concentric elbows
Ø 60/100. To snap-fit extensions with other
elements of the flue gas extraction elements,
operate as follows Install 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. This will ensure
the sealing and joining of the elements correctly.
The Ø 60/100 horizontal intake/exhaust kit can
be installed with the rear, right side, left side and
front outlet.
2
MAINTENANCE TECHNICIAN
1
1-10
3
• Application with rear outlet (Fig. 1-11). The 788
mm pipe length enables routing through a wall
with maximum thickness of 788 mm. Normally
the terminal must be shortened. Calculate the
distance by adding the following values: Part
thickness + internal projection + external
projection. The minimum indispensable
projection values are given in the figure.
•External grill. N.B.: for safety purposes, do
not even temporarily obstruct the water heater
intake-exhaust terminal.
• Application with lateral output (Fig. 1-12); Only
using the horizontal intake-exhaust kit, without
the relevant extensions, permits to pass through
a wall with thickness of 715.5 mm with the
Caesar 14 3 E and of 705 mm with the Super
Caesar 17 3 E (height “X”), both with left and
right lateral output.
•Extensions for horizontal kit. The horizontal
intake-exhaust kit Ø 60/100 can be extended
up to a max. horizontal distance of 3000
mm including the terminal with grid and
excluding the concentric bend leaving the
water heater. This configuration corresponds
to a resistance factor of 100. In these cases the
special extensions must be requested.
Connection with N°1 extension (Fig. 1-13).
Max. distance between vertical water heater axis
and external wall is 1855mm.
Connection with N°2 extensions (Fig. 1-14).
Max. distance between vertical water heater axis
and external wall is 2805mm.
C12
4
C12
5
The kit includes:
N°1 - Gasket (1)
N°1 - Concentric bend 90° (2)
N°1 - Intake/exhaust concentric pipe
Ø60/100 (3)
N°1 - Internal wall sealing plate (4)
N°1 - External wall sealing plate (5)
1-11
C12
C12
1-13
C12
1-12
1-14
10
Important: if the exhaust terminal and/or
extension concentric pipe needs shortening,
consider that the internal duct must always
protrude by 5 mm with respect to the external
duct.
This specific terminal enables flue exhaust and
air intake, necessary for combustion, in a vertical
direction.
N.B.: the Ø 60/100 vertical kit with aluminium
tile enables installation on terraces and roofs with
a maximum slope of 45% (25°) and the height
between the terminal cap and half-shell (374
mm) must always be respected.
Combustion products are expelled from pipe (S).
Air is taken in through pipe (A) for combustion.
The intake pipe (A) can be installed either on the
right or left hand side of the central exhaust pipe
(S). Both ducts can be routed in any direction.
•Kit assembly (Fig. 1-18): install flange (4) on
the central hole of the water heater, fitting
gasket (1) and tighten with the flat-tipped hex
screws included in the kit. Remove the flat
flange present in the lateral hole with respect
to the central one (according to needs) and
replace it with the flange (3), positioning the
gasket (2) already present in the water heater
and tighten using the supplied self-threading
screws. Fit the male end (smooth) to the bends
(5) in the female end of the flanges (3 and 4).
Fit the intake terminal (6) with the male section
(smooth) in the female section of the bend (5)
up to the stop, ensuring that the internal and
external wall sealing plates are fitted. Fit the
exhaust pipe (9) with the male end (smooth)
to the female end of the bend (5) up to the stop;
making sure that the internal wall sealing plate
has been fitted, this will ensure sealing and
joining of the elements making up the kit.
•Installation clearances. Figure 1-19 gives the
min. installation space dimensions of the
Ø 80/80 separator terminal kit in limited
conditions.
•Figure 1-20 shows the configuration with
vertical exhaust and horizontal intake.
•Extensions for the separator kit Ø 80/80.
The max. vertical straight length (without
bends) that can be used for Ø 80 intake and
exhaust pipes is 41 metres of which 40 intake
and 1 exhaust. The total length corresponds
to a resistance factor of 100. The total usable
length obtained by adding the length of the
intake and exhaust pipes Ø 80, must not
exceed the values stated in the following table.
If mixed accessories or components are used, the
maximum extension can be calculated by using
a resistance factor for each component or its
equivalent length. The sum of these resistance
factors must not exceed 100.
•Coupling of extension pipes and elbows. To
install push-fitting extensions with other
elements of the flue extraction elements
assembly, proceed as follows: Install the pipe
or elbow with the male side (smooth) on the
C32
C32
3
2
1
MAXIMUM LENGTH 4700 mm
7
4
6
5
The kit includes:
N°1 - Gasket (1)
N°1 - Female concentric
flange (2) (sold separately)
N°1 - Wall sealing plate (3)
N°1 - Aluminium tile (4)
N°1 - Int./exhaust concentric
pipe Ø 60/100 (5)
N°1 - Fixed half-shell (6)
N°1 - Mobile half-shell (7)
1-16
1-17
11
INSTALLER
Separator kit Ø 80/80. The Ø 80/80 separator
kit, allows separation of the exhaust flues and
air intake pipes according to the diagram shown
in the figure.
female section (with lip seal) to the end stop
on the previously installed element. This will
ensure sealing and joining of the elements
correctly.
USER
•Coupling extension pipes and concentric
elbows. To install push-fitting extensions
with other elements of the flue extraction
elements assembly, proceed as follows: Install
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. This will ensure sealing and joining of
the elements correctly.
The vertical kit with this configuration can be
extended up to a maximum of 4700 mm vertical
rectilinear, with the terminal included (Fig. 1-17).
This configuration corresponds to a resistance
factor of 100. In this case the special extensions
must be requested.
MAINTENANCE TECHNICIAN
Vertical kit with aluminium tile Ø 60/100.
Kit assembly (Fig. 1-16): install the concentric
flange (2) on the central hole of the water heater
inserting the gasket (1) and tighten using the
screws in the kit. Imitation aluminium tile
installation. Replace the tile with the aluminium
sheet (4), shaping it to ensure that rainwater
runs off. Position the fixed half-shell (6) and
insert the intake-exhaust pipe (5). Fit the Ø
60/100 concentric terminal pipe with the male
end (5) (smooth) to the female end of the flange
(2) (with lip gasket) up to the stop; making sure
that the wall sealing plate (3) has been fitted, this
will ensure sealing and joining of the elements
making up the kit.
INSTALLER
C82
4
C42
5
S
A
9
4
3
1
2
1-18
1-20
7
8
The kit includes:
N°1 - Exhaust gasket (1)
N°1 - Female intake flange (3)
N°1 - Flange gasket (2)
N°1 - Female exhaust flange (4)
N°2 - 90° bend Ø 80 (5)
N°1 - Intake terminal Ø 80 (6)
N°2 - Internal wall sealing plates (7)
N°1 - External wall sealing plate (8)
N°1 - Exhaust pipe Ø 80 (9)
1-19
1-21
C82
MAINTENANCE TECHNICIAN
USER
C52
6
Maximum usable lengths
(including intake terminal with grill and two 90° bends)
NON-INSULATED PIPE
INSULATED PIPE
Drain (metres)
Intake (metres)
Drain (metres)
Intake (metres)
1
36.0*
6
29.5*
2
34.5*
7
28.0*
3
33.0*
8
26.5*
4
32.0*
9
25.5*
5
30.5*
10
24.0*
11
22.5*
12
21.5*
* The air intake pipe can be increased to 2.5 metres if the exhaust bend
is eliminated. 2 metres if the air intake bend is eliminated. 4.5 metres
eliminating both bends.
Important: the water heater was designed to
evacuate combustion product up to a maximum
extension of 27 linear m to the exhaust, with
1 m plus 90° bend at intake. If the installation
requests a development of the flue to the
discharge that exceeds the recommended 12 m,
due consideration must be given to the formation
of condensate that could take place inside the
pipe and Immergas insulated “Blue Series” flue
kits must be used.
where the water heater is installed and from the
flue exhaust in each single flue or directly from
outdoors.
The water heater in this configuration, following
the assembly instructions stated in the par. 1.6 is
classified as type B22.
With this configuration:
-air intake takes place directly from the
environment in which the boiler is installed and
only functions in permanently ventilated rooms;
•Configuration type B, open chamber and
forced draught.
-the flue exhaust must be connected to its own
individual flue or channelled directly into the
external atmosphere.
When using type B installation configuration
indoors, it is compulsory to install the relative
upper cover kit along with the flue gas discharge
kit. The air intake comes directly from the area
- type B open chamber water heaters must not be
installed in places where commercial, artisan
or industrial activities take place, which use
products that may develop volatile vapours
12
or substances (e.g. acid vapours, glues, paints,
solvents, combustibles, etc.), as well as dusts (e.g.
dust deriving from the working of wood, coal
fines, cement, etc.). These may be damaging for
the components of the appliance and jeopardise
functioning.
- in type B22 configuration, the water heaters must
not be installed in bedrooms or bathrooms.
On installation indoors in type B configuration
it is mandatory to install the relevant top cover
kit along with the flue gas exhaust kit.
The technical regulations in force must be
respected.
1.10 FLUES, CHIMNEYS AND CHIMNEY
CAPS.
The flues, chimneys and chimney caps for the
evacuation of combustion products must be in
compliance with applicable standards.
Positioning the exhaust terminals. The exhaust
terminals must:
- be installed on external perimeter walls of the
building;
-be positioned according to the minimum
distances specified in current technical
standards.
Combustion products exhaust of natural or
fan assisted appliances in open-top closed
environments. In spaces closed on all sides
with open tops (ventilation pits, courtyards etc.),
direct flue gas exhaust is allowed for natural or
forced draught gas appliances with a heating
power range from 4 to 35 kW, provided the
conditions as per the current technical standards
are respected.
- avoid presence of sparks or naked flames;
•Covering kit. For outdoor installations, in
partially protected areas and with direct air
intake, the top protection cover must be fitted
for a correct functioning of the water heater
and to protect it from storms (Fig. 1-8). For
indoor installations, type B configuration, a
suitable top protection cover coupled with the
flue exhaust kit must be fitted.
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to specifications.
1.12 WATER HEATER START UP
(IGNITION).
For issue of the Declaration of Conformity
provided for by Italian Law, the following must
be performed for water heater start-up (the
operations listed below must only be performed
by qualified personnel and in the presence of
staff only):
- check that the internal system is properly sealed
according to specifications;
- ensure that the type of gas used corresponds to
water heater settings;
- check that there are external factors that may
cause the formation of fuel pockets;
- switch the water heater on and ensure correct
ignition;
INSTALLER
1.13 KITS AVAILABLE ON REQUEST.
• Polyphosphate dispenser kit. The polyphosphate
dispenser reduces the formation of lime-scale
and preserves the original heat exchange and
domestic hot water production conditions. The
water heater is prepared for application of the
polyphosphate dispenser kit.
•Anti freeze kit with resistance (on request). If
the water heater is installed in a place where the
temperature falls below 0°C and the appliance
can freeze. To prevent freezing of the domestic
hot water system, an anti freeze kit with an
electrical resistance can be fitted from the
relative cable and from a control thermostat.
•Bracket kit for Omni Container. If necessary,
the water heater can be installed inside the
Omni Container. For assembly, use the relevant
support bracket contained in the kit.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
USER
1.9 DUCTING OF FLUES OR
TECHNICAL SLOTS.
With a specific “ducting system” it is possible to
reuse existing flues, chimneys and existing or
new technical slots to discharge the water heater
flue gases. Ducting requires the use of ducts
declared to be suitable for the purpose by the
manufacturer. Follow the installation and user
instructions provided by the manufacturer and
the requirements of standards.
1.11 GAS SYSTEM START-UP.
To start up the system, make reference to the
Standard: This divides the systems and therefore
the start-up operations into three categories: new
systems, modified systems, re-activated systems.
In particular, for new gas systems:
- open windows and doors;
-make sure that the gas flow rate and relevant
pressure values comply with those given in the
manual (par. 3.13);
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
-check activation of the main switch located
upstream from the water heater;
-check that the concentric intake-exhaust
terminal (if fitted) is not blocked.
The water heater must not be started up even if
only one of the checks should be negative.
N.B.: solely upon completion of commissioning
by an installer, an authorised company can carry
out an initial check of the water heater, which is
required to activate the warranty. The test certificate and warranty is issued to the user.
13
MAINTENANCE TECHNICIAN
1.8 FLUE EXHAUST TO FLUE/CHIMNEY.
Flue exhaust does not necessarily have to be
connected to a branched type traditional flue.
The discharge of flue gases, just for the water
heaters installed in configuration C, can be
connected to a particular LAS type collective flue.
For B22 configurations, discharge is only allowed
into individual flue or directly into the outside
atmosphere by the relevant terminal. Multiple
and combined flues must be specially designed
according to the calculation method and
requirements of the standards, by professionally
qualified technical staff. Chimney or flue sections
for connection of the exhaust pipe must comply
with requisites of technical standards in force.
1.14 WATER HEATER COMPONENTS.
MAINTENANCE TECHNICIAN
USER
INSTALLER
1- 22
Key:
1 - Sealed chamber
2- Fan
3 - DHW heat exchanger
4 - Ignition/detection electrode
5 - Gas valve
6 - Flue pressure switch
7 - Safety thermostat
8 - Flue hood
9 - DHW probe (hot water output)
10 - Combustion chamber
11- Burner
12 - Gas manifold
13 - Flow limiter
14 - One-way valve
15 - Flow rate meter
16 - Domestic water inlet cock
17 - DHW probe (cold water input)
14
2.1 CLEANING AND MAINTENANCE.
Attention: to preserve the water heater’s integrity
and keep the safety features, performance and
reliability, which distinguish it, unchanged over
time, you must at least execute maintenance
operations on a yearly basis in compliance with
what is stated in the relative point at “annual
check and maintenance of the appliance”. Annual
maintenance is essential to validate the conventional warranty of Immergas. We recommend
stipulating a yearly cleaning and maintenance
contract with your zone Immergas Authorised
After-sales Service.
2.2 GENERAL WARNINGS
Never expose the wall-mounted water heater to
direct vapours from a cooking surface.
Use of the water heater by unskilled persons or
children is strictly prohibited.
Do not touch the flue gas exhaust terminal (if
present) due to the high temperatures it can
reach;
For safety purposes, check that the concentric
air intake/flue exhaust terminal (if fitted), is
not blocked.
Whenever temporary deactivation of the water
heater is decided, the electric, water and gas
supplies must be interrupted.
In the case of work or maintenance to structures
located in the vicinity of ducting or devices for
flue extraction and relative accessories, switch off
the appliance and on completion of operations
ensure that an authorised company checks
efficiency of the ducting or other devices.
Never clean the appliance or connected parts
with easily flammable substances.
Never leave containers or flammable substances
in the same environment as the appliance.
INSTALLER
INSTRUCTIONS FOR USE
AND
MAINTENANCE.
•Important: the use of components involving
use of electrical power requires some
fundamental rules to be observed:
-do not touch the appliance with wet or moist
parts of the body; do not touch when barefoot;
-never pull electrical cables or leave the
appliance exposed to atmospheric agents (rain,
sunlight, etc.);
- the appliance power cable must not be replaced
by the user;
- in the event of damage to the cable, switch off
the appliance and contact exclusively qualified
staff for replacement;
-if the appliance is not to be used for a certain
period, disconnect the main power switch.
USER
2
2.3 CONTROL PANEL.
MAINTENANCE TECHNICIAN
2-1
Key:
1
2
3
4
5
6
-
-
-
-
-
-
On/Stand-by/Off Button
Reset button
Temperature selector
Domestic hot water function
Temperature and error code display
Unit of measurement
7
8
9
10
11
-
-
-
-
-
Not used on this model
Not used on this model
Not used on this model
Output efficiency
Flame presence
15
INSTALLER
2.4 USE OF THE WATER HEATER.
Ignition (Fig. 2-1). Before ignition, check that
the DHW inlet valve is open.
-Open the gas cock upstream from the water
heater.
- Press the button (1) until the display switches
on; pressing the button passes cyclically from
the “off ”, “stand-by” and “on” state of the
appliance.
-Regulate the DHW temperature according to
requirements by turning the selector (3).
Turning in a clockwise direction the
temperature increases and in an anti-clockwise
direction it decreases.
USER
From this moment the water heater functions
automatically. If there is no request for DHW, it
goes to "Stand-by" which is equal to water heater
powered without flame presence. The display
shows the temperature of the water inside the
water heater (5). Each time the burner ignites,
the relative flame present symbol is displayed
(11) with relative power scale (10). Moreover, the
indication of the instant temperature supplied
by the water heater is supplied.
•“Stand-by” mode. Repeatedly press the
button (1) until the ( ) symbol appears. The
water heater is inactive from this moment.
The indication of any anomalies is however
guaranteed.
N.B.: in these conditions the water heater is
considered still powered.
MAINTENANCE TECHNICIAN
•“Off ” mode. Press button (1) repeatedly until
the display switches off. In this way the water
heater is off completely.
N.B.: in these conditions the water heater
is considered still live even if there are no
functions active.
2.5 FAULT AND ANOMALY SIGNALS.
The water heater signals out anomalies by
flashing on the display and relative error codes,
listed on the table, are displayed.
code
Anomaly signalled
displayed
(flashing)
No ignition block
Over-heating (safety) thermostat block
Domestic hot water probe
anomaly
01
02
06
Maximum N° of reset
08
Flue pressure switch failure
11
Domestic hot water inlet
probe anomaly
12
Parasite flame
20
Push button control panel
anomaly
24
Low power supply voltage
37
eliminate the “ignition block”. If this phenomenon
occurs frequently, contact an authorised company
for assistance (e.g. Immergas After-Sales Technical
Assistance Service).
Overtemperature thermostat block. During
normal functioning, if a fault causes excessive
overheating internally, the water heater goes into
overtemperature block (code 02). After allowing
to cool, eliminate the "overtemperature block" by
pressing the Reset key (2). If this phenomenon
occurs frequently, contact an authorised company
for assistance (e.g. Immergas After-Sales Technical
Assistance Service).
2.6 INFORMATION MENU.
Pressing the button (2) for 8 seconds, the
“Information menu” is activated, which allows to
display some water heater functioning parameters.
To scroll the various parameters, press the button
(2), to exit the menu, press the button (1) or wait
for 15 minutes.
List of parameters.
N°
parameter
d1
Domestic hot water probe anomaly. If the board
detects an anomaly on the delivery probe (code
06), the water heater will not start; contact an
authorised company for assistance (e.g. Immergas
After-Sales Technical Assistance Service).
d2
Maximum N° of reset. To eliminate any “anomaly”
the Reset button (2) must be pressed. The Anomaly
can be reset 5 times consecutively, after which the
function in inhibited for at least one hour. One
attempt is gained every hour for a maximum of
5 attempts.
d4
Flue gas pressure switch failure. This occurs if the
intake or exhaust pipes are blocked, in case of a fan
fault or a fault on the flue gas pressure switch (code
11). If normal conditions are restored the water
heater restarts without having to be reset. If this
anomaly persists, contact an authorised company
for assistance (e.g. Immergas After-Sales Technical
Assistance Service).
Domestic hot water inlet probe anomaly. If the
board detects an anomaly on the domestic hot
water NTC probe, the water heater signals the
anomaly. In this case the water heater continues to
produce domestic hot water but not with optimal
performance. An authorised company however
must be called (e.g. Immergas After-Sales Service).
Parasite flame. This occurs in case of a leak on the
detection circuit or anomaly in the flame control
unit.(code 20), try to reset the water heater. If
the anomaly continues contact an authorised
company (e.g. Immergas After-Sales Technical
Assistance Service).
Push button control panel anomaly. This occurs
when the circuit board detects an anomaly on the
push button control panel. If normal conditions are
restored the water heater restarts without having
to be reset. If this anomaly persists, contact an
authorised company for assistance (e.g. Immergas
After-Sales Technical Assistance Service).
Low power supply voltage This occurs when the
power supply voltage is lower than the allowed
limits for the correct functioning of the water
heater. If normal conditions are restored the
water heater restarts without having to be reset.
If this phenomenon occurs frequently, contact an
authorised company for assistance (e.g. Immergas
After-Sales Technical Assistance Service).
Ignition block. The water heater ignites
automatically with each demand for hot water
production. If this does not occur within 10
seconds, the water heater goes into ignition block
(code 01). To eliminate “ignition block” the Reset
button (2) must be pressed. On commissioning
or after extended inactivity it may be necessary to
16
d3
Description
Displays the instant DHW flow
rate (l/min)
Displays the temperature of the
inlet water on the water heater.
Displays the temperature of
the outlet water from the water
heater.
Displays the temperature set
on the water heater via the
temperature selector (3)
2.7 SWITCH-OFF OF THE WATER
HEATER.
Press the button (1 Fig. 2-1) (
) until the
display is switched off completely.
N.B.: in these conditions the water heater is
considered still powered.
Disconnect the external omnipolar water heater
switch and close the gas cock upstream of the
appliance. Never leave the water heater switched
on if left unused for prolonged periods.
2.8 EMPTYING THE WATER HEATER.
To empty the water heater, close the cold water
inlet valve and open the hot water valve lower
down in the water network in the room.
2.9 ANTI-FREEZE PROTECTION
(OPTIONAL).
The water heater can be equipped with an
optional anti-freeze kit, which protects it from
freezing to outdoor temperatures of -15°C. For
correct installation of the kit and especially
to guarantee appropriate functioning, the
instructions supplied with the kit itself must
be followed.
2.10 CASE CLEANING.
Use damp cloths and neutral detergent to clean
the water heater casing. Never use abrasive or
powder detergents.
2.11DECOMMISSIONING.
In the event of permanent shutdown of the
water heater, contact professional staff for
the procedures and ensure that the electrical,
water and gas supply lines are shut off and
disconnected.
CONTROL AND MAINTENANCE
INSTALLER
3
MAINTENANCE TECHNICIAN
USER
3.1 HYDRAULIC DIAGRAM.
Key:
1- Fan
2 - Sealed chamber
3 - Safety thermostat
4 - Primary heat exchanger
5 - DHW probe (hot water output)
6- Burner
7 - Gas valve
8 - Flue pressure switch
9 -
10 -
11 -
12 -
13 -
14 -
Flue hood
One-way valve
Flow limiter
Flow rate meter
DHW probe (cold water input)
Domestic hot water inlet valve
AC - Domestic hot water outlet
AF - Domestic cold water inlet
G - Gas supply
17
3-1
3.2 WIRING DIAGRAM.
Condenser
Red
Black
White
Red
Red
Black
Black
White
White
Grey
White
Grey
Black
Black
Blue
Blue
Brown
Brown
Yellow/Green
Blue
Brown
INSTALLER
230 Vac
50 Hz
Power supply
USER
THE X6 CONNECTOR IS
USED FOR AUTOMATIC
INSPECTION
N.B. THE USER INTERFACE
IS ON THE WELDING SIDE
OF THE BOILER BOARD
Domestic hot water probe
Domestic hot water flow meter
DHW inlet probe
Display
Ignition/detection electrodes
Phase fuse
Neutral fuse
Fan
Domestic hot water temperature selector
Stand-by - On Button
Reset button
Flue pressure switch
Ignition transformer
Gas valve
Gas valve modulator
3-2
3.3TROUBLESHOOTING
N.B.: maintenance interventions must be carried
out by an authorised company (e.g. Immergas
After-Sales Technical Assistance Service).
MAINTENANCE TECHNICIAN
Key:
B2 -
B6 -
B9 -
DS1 -
E3 -
F1 -
F2 -
M20 -
R5 -
S2 -
S3 -
S6 -
T2 -
Y1 -
Y2 -
- Smell of gas. Caused by leakage from gas circuit
pipelines. Check sealing efficiency of gas intake
circuit.
- The fan works but ignition discharge does not
occur on the burner ramp. The fan may start
but the safety air pressure switch does not
switch the contact over. Make sure:
1) 1) the intake-exhaust duct is not too long
(over allowed length).
2) 2) the intake-exhaust pipe is not partially
blocked (on the exhaust or intake side).
3) the diaphragm of the flue gas exhaust is
adequate for the length of the intake-exhaust
duct.
4) that the sealed chamber is kept in good
conditions.
5) the fan power supply voltage is not less than
196 V.
e.g. Immergas After-Sales Technical Service
according to good practice. To preserve
integrity and efficiency of the heat exchanger, a
non corrosive descaler must be used. Cleaning
must be carried out without the use of tools
which can damage the heat exchanger.
3.4 CONVERTING THE WATER HEATER
TO OTHER TYPES OF GAS.
If the boiler has to be converted to a different gas
type to that specified on the data plate, request
the relative conversion kit for quick and easy
conversion.
Boiler conversion must be carried out by an
authorised company (e.g. Immergas After-Sales
Technical Assistance Service).
To convert to another type of gas the following
operations are required:
- remove the voltage from the appliance;
- replace the main burner injectors, making sure
to insert the special seal rings supplied in the
kit, between the gas manifold and the injectors;
- apply voltage to the appliance;
-Irregular combustion (red or yellow flame).
This may be caused by: dirty burner, incorrect
combustion parameters, intake - exhaust
terminal not correctly installed. Clean
the above components and ensure correct
installation of the terminal.
- Use the push button control panel to select the
gas parameter type (P2) and then select (nG)
in case of Methane supply or (LG) in the case
of LPG;
-Frequent activation of the overheating
temperature or safety thermostat. It can depend
on an anomaly on the water heater P.C.B. or and
anomaly of the regulation NTC probe.
- seal the gas flow rate devices (if adjusted);
-Ignition block see par. 2.6 and 1.4 (electric
connection).
-Low water flow: if, as a result of lime scale
(calcium and magnesium), the domestic
hot water system does not work properly
contact an authorised company for descaling
- adjust the water heater nominal heat output;
- adjust the water heater minimum heat output;
- after completing conversion, apply the sticker,
present in the conversion kit, near the dataplate. Using an indelible marker pen, cancel
the data relative to the old type of gas.
These adjustments must be made with reference
to the type of gas used, following that given in
the table (Par. 3.13).
18
3.5 CHECKS FOLLOWING
CONVERSION TO ANOTHER TYPE
OF GAS.
After making sure that conversion was carried
out with a nozzle of suitable diameter for the
type of gas used and the settings are made at the
correct pressure, check that:
- there is no flame in the combustion chamber
- the burner flame is not too high or low and that
it is stable (does not detach from burner)
-the pressure testers used for calibration are
perfectly closed and there are no leaks from
the gas circuit.
N.B.: all water heater adjustment operations
must be carried out by an authorised company
(e.g. Immergas After-Sales Technical Assistance).
Burner adjustment must be carried out using a
differential "U" or digital type pressure gauge,
connected to a Y-shaped pipes to be placed on
the small silicone pipe that goes from the gas
valve to the sealed chamber and to the gas valve
outlet pressure point (part. 4 fig. 3-3), keeping
to the pressure value given in the table par. 3.13
according to the type of gas for which the water
heater is prepared.
4
3
1
2
5
6
INSTALLER
SIT 845 Gas Valve
Key:
1- Coil
2 - Minimum power adjustment screws
3 - Maximum power adjustment screw
4 - Gas valve outlet pressure point
5 - Gas valve inlet pressure point
6 - Protection hood
-Turn the hot water selector knob (3 Fig. 2-1)
to the maximum functioning position;
- Open the domestic hot water cock in order to
prevent modulation intervention.
- Adjust the water heater nominal power on the
brass nut (3), keeping to the maximum pressure
values stated in the tables (Par. 3.13) depending
on the type of gas.
- By turning in a clockwise direction the heating
potential increases and in an anti-clockwise
direction it decreases.
• Adjustment of minimum heat output (Fig. 3-3).
3.7 PROGRAMMING THE P.C.B.
The water heater is prepared for possible
programming of several operation parameters.
By modifying these parameters as described
below, the water heater can be adapted according
to specific needs.
To access the programming phase, proceed as
follows:
-press keys (1) and (2) at the same time for
approximately 10 seconds, keeping the selector
(3) at minimum;
-using key (2), select the parameter to be
changed indicated in the following table:
List of
parameters
Description
Adjustment of the minimum thermal input
is obtained by operating on the cross plastic
screws (2) on the gas valve maintaining the
brass nut blocked (3);
P1
Solar delay timing
P2
Gas type selection
- disconnect the power supply to the modulating
coil (just disconnect a faston); By turning the
screw in a clockwise direction, the pressure
increases, in an anti-clockwise direction it
decreases. On completion of calibration, reapply the power supply to the modulating
coil. The pressure to which the water heater
minimum power must be adjusted, must not
be lower than that stated in the table (Par. 3.13)
depending on the type of gas.
P3
Ignition power value
P4
Display lighting
N.B.: only proceed after having calibrated the
nominal pressure.
N.B.: to adjust the gas valve, remove the plastic
cap (6); after adjusting, refit the cap.
Range of values which can
be set
G Town gas (first family gas)
LG (LPG) or nG (Methane)
(nG Standard setting)
Parameter
P2
Ignition power value. The water heater has
electronic modulation that adapts the ignition
power according to requirement.
Range of values which can
be set
from 0 % to 50 % (35 % Standard setting)
Parameter
P3
Display lighting. Establishes the display lighting
mode.
-confirm the value set by pressing the Reset
button (2) for about 3 seconds.
The value flashes when it is memorised.
N.B.: after a period of time, without touching
any keys, the operation cancels automatically.
Solar delay timing.The water heater is set to
switch-on immediately after a request for DHW
In the case of coupling with a solar storage tank
positioned upstream from the water heater, it
is possible to compensate the distance between
the storage tank and the water heater in order
to allow the water to reach the water heater. Set
the time necessary to verify that the water is hot
enough (see par. Solar panels coupling)
Solar delay timing
19
Gas type selection
Ignition power value
- adjust the corresponding value consulting the
following tables by turning the selector (3);
Range of values which can
be set
From 0 to 60 sec. (0 Standard
setting)
Gas type selection. The setting of this function
is used to adjust the water heater in order to
function with LPG gas or Methane gas.
Parameter
P1
0 Off: the display is always off.
1 Automatic: the display lights up when the water
heater is used.
2 On: The display is always lit up.
Display lighting
Range of values which can
be set
Parameter
0 - 1 - 2 (1 Standard setting)
P4
3.8 AUTOMATIC SLOW IGNITION
FUNCTION WITH TIMED RAMP
DELIVERY.
In the ignition phase, the burner ignites at the
"ignition power value" set (P3), after which, on
the basis of the DHW withdrawal it carries out
a gas supply increasing ramp (with pressure
values that depend on the type of gas selected)
with a pre-defined duration. This prevents every
calibration or precision adjustment of the water
heater ignition phase in any conditions of use.
MAINTENANCE TECHNICIAN
3.6 POSSIBLE ADJUSTMENTS
• Adjustment of nominal heat output (Fig. 3-3).
USER
3-3
INSTALLER
3.9 SOLAR FUNCTION.
The solar function is always active.
During a request for DHW, if the inlet
temperature is the same as or higher than -3°C
with respect to the value set, the water heater
does not switch-on.
Functioning is however shown on the display by
the flashing of the relevant signal (4).
3.10 SOLAR PANELS COUPLING
FUNCTION.
The water heater is set-up to receive pre-heated
water from a system of solar panels up to a
maximum temperature of 65°C. In all cases, it is
always necessary to install a mixing vale on the
hydraulic circuit upstream from the water heater
on the cold water inlet.
shorted, in particular:
- temperature safety thermostat;
- air pressure switch
-Check the condition and integrity of the
electrical system and in particular:
-electrical power cables must be inside the
whipping;
-there must be no traces of blackening or
burning.
MAINTENANCE TECHNICIAN
USER
Note: for good functioning of the water heater;
the temperature selected on the mixing valve
must be 5 °C greater with respect to the
temperature selected on the water heater control
panel.
In this condition, parameter P1 (solar delay
timing) must be set at a temperature sufficient
to receive water from a storage tank situated
upstream from the water heater. The greater the
distance from the storage tank, the longer the
stand-by time to be set. When these regulations
have been performed, when the water heater inlet
water is at the same or greater temperature with
respect to that set by the DHW selector switch,
the water heater does not switch on.
3.11 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
The following checks and maintenance should
be performed at least once a year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Visually check the flue hood for deterioration
or corrosion.
- Check correct lighting and operation.
- Check correct burner calibration.
-Check correct operation of control and
adjustment devices and in particular:
-the intervention of the functioning selector
positioned on the water heater control panel;
-domestic hot water control thermostat
intervention.
-Check that the internal system is properly
sealed according to specifications.
- Check the intervention of the device against no
gas ionisation flame control. Intervention time
must be less than 10 seconds.
-Visually check for water leaks or oxidation
from/on connections.
-Check visually that the safety and control
devices have not been tampered with and/or
20
INSTALLER
3.12 CASING REMOVAL.
To facilitate water heating maintenance the
casing can be completely removed as follows:
(Fig. 3-5):
1) Loosen the lower screws (a) that fix the lower
protection grid (b) and the casing (c).
2) Widen the casing (c) pulling the sides slightly
outwards.
3) Pull the casing towards yourself in the lower
side.
4) Push the casing upwards in a way to be able
to extract it from the upper hooks (d).
USER
4
4
d
c
MAINTENANCE TECHNICIAN
d
3
1
a
a
1
2
1
a
b
1
3-5
21
MAINTENANCE TECHNICIAN
USER
INSTALLER
3.13 VARIABLE HEAT POWER.
N.B.: the pressures indicated in the table
represent the difference in existing pressures
between the gas valve outlet and the combustion
chamber. The adjustments should therefore,be
carried out using a differential manometer
(small "U"-shaped column or digital manometer)
with the probes inserted in the pressure test gas
valve outlet and on the sealed chamber positive
pressure test. The power data in the table has been
obtained with intake-exhaust pipe measuring 0.5
m in length. Gas flow rates refer to heating power
below a temperature of 15°C and at a pressure of
1013 mbar. Burner pressure values refer to use
of gas at 15°C.
Caesar 14 3 E.
METHANE (G20)
BUTANE (G30)
BURNER NOZZLES
PRESSURE
BURNER
GAS FLOW RATE
PROPANE (G31)
HEAT
OUTPUT
HEAT
OUTPUT
BURNER
GAS FLOW RATE
(kW)
(kcal/h)
(m3/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
24,4
20984
2,92
13,20
134,6
2,18
28,70
292,7
2,14
36,40
371,2
24,0
20640
2,87
12,84
130,9
2,15
28,04
286,0
2,11
35,49
361,9
23,0
19780
2,77
11,96
122,0
2,06
26,42
269,4
2,03
33,26
339,1
22,0
18920
2,66
11,12
113,4
1,98
24,83
253,2
1,95
31,09
317,0
21,0
18060
2,55
10,30
105,0
1,90
23,28
237,4
1,87
28,98
295,5
20,0
17200
2,44
9,51
96,9
1,82
21,75
221,8
1,79
26,94
274,7
19,0
16340
2,33
8,74
89,1
1,74
20,24
206,4
1,71
24,95
254,4
18,0
15480
2,22
8,00
81,6
1,66
18,76
191,3
1,63
23,01
234,6
17,0
14620
2,11
7,29
74,3
1,58
17,31
176,5
1,55
21,13
215,5
16,0
13760
2,00
6,60
67,3
1,49
15,87
161,8
1,47
19,30
196,8
15,0
12900
1,89
5,94
60,5
1,41
14,46
147,4
1,39
17,52
178,6
14,0
12040
1,78
5,30
54,0
1,33
13,06
133,2
1,31
15,79
161,0
13,0
11180
1,67
4,68
47,7
1,24
11,68
119,1
1,22
14,11
143,9
12,0
10320
1,55
4,09
41,7
1,16
10,32
105,3
1,14
12,47
127,2
11,0
9460
1,44
3,52
35,9
1,07
8,98
91,5
1,05
10,89
111,0
10,0
8600
1,32
2,98
30,3
0,98
7,65
78,0
0,97
9,35
95,4
9,0
7740
1,20
2,46
25,1
0,89
6,33
64,5
0,88
7,86
80,2
8,0
6880
1,08
1,97
20,0
0,80
5,03
51,3
0,79
6,43
65,5
7,0
6020
0,95
1,50
15,3
0,71
3,74
38,1
0,70
5,04
51,4
22
BURNER NOZZLES
PRESSURE
BURNER
GAS FLOW RATE
BURNER NOZZLES
PRESSURE
Super Caesar 17 3 E.
HEAT
OUTPUT
HEAT
OUTPUT
BURNER
GAS FLOW RATE
BURNER
GAS FLOW RATE
BURNER NOZZLES
PRESSURE
BURNER
GAS FLOW RATE
BURNER NOZZLES
PRESSURE
(kW)
(kcal/h)
(m3/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
29,8
25628
3,56
12,50
127,5
2,66
28,50
290,6
2,62
36,60
373,2
29,0
24940
3,47
11,86
121,0
2,59
27,08
276,2
2,55
34,83
355,2
28,0
24080
3,36
11,10
113,2
2,50
25,37
258,7
2,46
32,70
333,4
27,0
23220
3,24
10,36
105,7
2,42
23,73
242,0
2,38
30,64
312,4
26,0
22360
3,13
9,66
98,5
2,33
22,15
225,9
2,30
28,66
292,3
25,0
21500
3,01
8,99
91,6
2,25
20,64
210,5
2,21
26,75
272,8
24,0
20640
2,90
8,34
85,0
2,17
19,19
195,7
2,13
24,92
254,1
23,0
19780
2,79
7,72
78,7
2,08
17,80
181,5
2,05
23,15
236,1
22,0
18920
2,68
7,13
72,7
2,00
16,46
167,8
1,97
21,45
218,7
21,0
18060
2,57
6,56
66,9
1,92
15,18
154,7
1,88
19,81
202,0
20,0
17200
2,46
6,02
61,4
1,83
13,95
142,2
1,80
18,23
185,9
19,0
16340
2,34
5,50
56,1
1,75
12,77
130,2
1,72
16,71
170,4
18,0
15480
2,23
5,01
51,1
1,67
11,64
118,7
1,64
15,24
155,4
17,0
14620
2,12
4,54
46,3
1,58
10,56
107,7
1,56
13,84
141,1
16,0
13760
2,01
4,10
41,8
1,50
9,54
97,2
1,47
12,49
127,3
15,0
12900
1,89
3,67
37,5
1,41
8,56
87,3
1,39
11,19
114,1
14,0
12040
1,78
3,27
33,4
1,33
7,63
77,8
1,31
9,95
101,5
13,0
11180
1,66
2,90
29,5
1,24
6,74
68,8
1,22
8,77
89,4
12,0
10320
1,55
2,54
25,9
1,15
5,91
60,3
1,14
7,63
77,8
11,0
9460
1,43
2,21
22,6
1,07
5,13
52,3
1,05
6,56
66,9
10,0
8600
1,31
1,91
19,5
0,98
4,39
44,8
0,96
5,53
56,4
9,0
7740
1,19
1,63
16,6
0,89
3,71
37,8
0,87
4,57
46,6
8,0
6880
1,07
1,37
14,0
0,80
3,08
31,4
0,78
3,66
37,3
7,7
6622
1,03
1,30
13,3
0,77
2,90
29,6
0,76
3,40
34,7
3.14 COMBUSTION PARAMETERS.
G20
G30
G31
Caesar 14 3 E
Gas nozzle diameter
mm
1.35
0.81
0.81
mbar (mm H2O)
20 (204)
29 (296)
37 (377)
Flue flow rate at nominal heat output
kg/h
55
57
59
Flue flow rate at min heat output
kg/h
58
58
58
%
7,20 / 2,10
8,10 / 2,42
7,64 / 2,40
Supply pressure
CO2 at Nom Q./Min.
CO with 0% O2 at Nom Q /Min.
ppm
70 / 145
78 / 174
40 / 172
NOX with 0% O2 at Nom Q /Min.
mg/kWh
177 / 109
200 / 60
220 / 75
Flue temperature at nominal output
°C
171
171
163
Flue temperature at minimum output
°C
113
113
113
Super Caesar 17 3 E
Gas nozzle diameter
mm
1.35
0.80
0.80
mbar (mm H2O)
20 (204)
29 (296)
37 (377)
Flue flow rate at nominal heat output
kg/h
71
69
71
Flue flow rate at min heat output
kg/h
76
72
79
Supply pressure
CO2 at Nom Q./Min.
%
6,80 / 1,70
8,11 / 2,10
7,85 / 1,91
CO with 0% O2 at Nom Q /Min.
ppm
40 / 190
75 / 234
54 / 223
NOX with 0% O2 at Nom Q /Min.
mg/kWh
135 / 107
210 / 65
230 / 90
Flue temperature at nominal output
°C
157
164
161
Flue temperature at minimum output
°C
92
97
90
23
INSTALLER
BURNER NOZZLES
PRESSURE
PROPANE (G31)
USER
BUTANE (G30)
MAINTENANCE TECHNICIAN
METHANE (G20)
USER
INSTALLER
3.15 TECHNICAL DATA.
Nominal heat input
Minimum heat input
Nominal heat output (useful)
Minimum heat output (useful)
Efficiency at nominal heat output
Heat loss at case with burner On
Heat loss at flue with burner On
Water content in generator
Domestic hot water adjustable temperature
Domestic hot water circuit flow limiter at 2 bar
Min. pressure (dynamic) burner ON (in ascent)
Min. pressure (dynamic) burner ON (in descent)
Min. flow rate (dynamic) burner ON (in ascent)
Min. flow rate (dynamic) burner ON (in descent)
Domestic hot water circuit max. working pressure
Withdrawal capacity in continuous service (∆T 25 °C) in mixing mode
Drawing capacity in continuous duty (∆T 50 °C)
Full water heater weight
Empty water heater weight
Electrical connection
Power input
Installed electric power
Fan consumption
Equipment electrical system protection
Type of appliance
Category
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
%
%
%
l
°C
l/min
bar
bar
l/min
l/min
bar
l/min
l/min
kg
kg
V/Hz
A
W
W
-
MAINTENANCE TECHNICIAN
-Flue temperature values refer to an air inlet
temperature of 15°C.
-The data relevant to domestic hot water
performance refer to a dynamic inlet pressure
of 2 bar and an inlet temperature of 15°C; the
values are measured directly at the water heater
outlet considering that, to obtain the data
declared, mixing with cold water is necessary.
-The max. sound level emitted during water
heater operation is < 55dBA. The sound level
value is referred to semianechoic chamber
tests with water heater operating at max. heat
output, with extension of flue gas exhaust
system according to product standards.
24
Caesar 14 3 E
Super Caesar 17 3 E
27,6 (23711)
33,7 (28958)
9,0 (7748)
9,7 (8382)
24,4 (20984)
29,8 (25628)
7,0 (6020)
7,7 (6622)
88,5
88,5
2,0
2,4
9,5
9,1
1,0
1,0
40 - 60
40 - 60
9,5
10,0
0,25
0,25
0,20
0,20
2,5
2,5
2,0
2,0
10,0
10,0
14,0
17,0
7,0
8,5
23,0
23,0
22,0
22,0
230 / 50
230 / 50
0,40
0,55
50
70
29,2
54,5
IPX5D
IPX5D
C12 /C32 / C42 / C52 / C82 / B22 / B32
II2H3+
Cod. 1.032004ENG - rev. ST.001072/000 - 11/14 - Inglese per IRLANDA (IE)
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