CAESAR 14 4 ERP a SUPER CAESAR 17 4 ERP

*1.038494ENG*
Instruction and
recommendation booklet
IE
CAESAR 14 4 ERP
and SUPER CAESAR
17 4 ERP
Dear Customer,
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 assistance and scheduled maintenance contact Authorised After-Sales centres: they have original spare parts and are specifically trained directly by 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 heaters. As for the other issues related to water heater installation (e.g.
safety in the work site, environment protection, injury prevention), it is necessary to comply with the provisions of the regulations in force and the principles
of good practice.
Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by an authorised
company, which has specific technical expertise in the system sector, as required by 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 an authorised company. The Authorised After-sales Service represents a guarantee of qualification 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.
CE DECLARATION OF CONFORMITY
(according to ISO/IEC 17050-1)
The company IMMERGAS S.p.A., with registered office in via Cisa Ligure 95 42041 Brescello (RE) whose design, manufacturing, and after sale assistance
processes comply with the requirements of standard UNI EN ISO 9001:2008,
DECLARES that:
CAESAR 14 4 ERP and SUPER CAESAR 17 4 ERP water heaters comply with the following European Directives and Delegated European Regulations:
“Eco-design” Directive 2009/125/EC, “Energy labelling” Directive 2010/30/EC, EU Regulation 812/2013, EU Regulation 814/2013, “Gas Appliance”
Directive 2009/142/EC.
Mauro Guareschi
Research & Development Director
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 prior notice.
INDEX
INSTALLERpage
USER
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2 Use and maintenance instructions.........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
2.5Troubleshooting.......................................16
2.6 Information menu....................................16
2.7 Switching off 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
Water heater installation........................... 5
Installation recommendations.................. 5
Main dimensions........................................ 6
Anti-freeze protection............................... 6
Gas connection........................................... 6
Hydraulic connection................................ 7
Electrical connection................................. 7
Immergas flue systems............................... 8
Tables of Resistance Factors and
Equivalent Lengths.................................... 9
1.9 Outdoor installation in partially
protected area...........................................10
1.10 Concentric horizontal kit installation...11
1.11 Concentric vertical kit installation........11
1.12 Separator kit installation.........................12
1.13 Ducting of flues or technical slots..........13
1.14 Configuration type B, open chamber
and fan assisted for indoors....................13
1.15 Flue exhaust to flue/chimney..................13
1.16 Flues, chimneys and chimney caps........13
1.17 Gas system start-up..................................13
1.18 Water heater start up (ignition)..............13
1.19 Kits available on request..........................13
1.20 Water heater components.......................14
page
MAINTENANCE TECHNICIANpage
3 Checks 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.................................20
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 output.................................22
3.14 Combustion parameters..........................23
3.15 Technical data...........................................24
3.16 Key for data nameplate............................25
3.17 Product fiche (in compliance with
Regulation 812/2013)..............................26
3.18 Parameters for filling in
the package fiche......................................27
- 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
are not designed to be installed on plinths or
floors (Fig. 1-1).
By varying the type of installation the classification of the water heater also varies, precisely:
- Type B water heater22 if installed using the
relevant terminal for air intake directly from
the room in which the water heater has been
installed.
- Type C water heater if installed using concentric pipes or other types of pipes envisioned for
the sealed chamber water heaters for intake of
air and expulsion of fumes.
Note: appliance classification is provided in the
depictions of the various installation solutions
shown on the following pages.
Only professionally enabled companies are
authorised to install Immergas gas appliances.
Installation must be carried out according to
regulation standards, current legislation and in
compliance with local technical regulations and
the required technical procedures.
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 flue removal connections.
Keep all flammable objects away from the appliance (paper, rags, plastic, polystyrene, etc.).
In the event of malfunctions, faults or incorrect
operation, turn the appliance off and contact an
authorised company (e.g. the Authorised Technical Assistance 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.
•Installation regulations:
-this water heater can be installed outdoors
in a partially protected area. A partially protected area is one in which the water heater
is not exposed to the direct action of the
weather (rain, snow, hail, etc.).
N.B.: this type of installation is only possible
when permitted by the laws in force in the appliance's country of destination.
-Installation in places with a fire risk is prohibited (for example: garages, closed parking
stalls), gas appliances and relative flue ducts,
flue exhaust pipes and combustion air intake
pipes.
-Installation is prohibited on the vertical
projection of cooking hobs.
-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 technical standards in
force).
5
INSTALLER
1.1INSTALLATION
RECOMMENDATIONS.
The water heaters have been designed for wall
installation only, for the production of domestic
hot water in domestic and similar uses.
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);
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 fittings. If this is not the case, the
manufacturer cannot be considered liable for
any damage caused to the household appliances.
For the aforementioned reasons, we recommend
not placing furnishings, furniture, etc. under the
water heater.
YES
NO
1-1
Attention: 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.
USER
WATER HEATER INSTALLATION
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.
MAINTENANCE TECHNICIAN
1
1.2 MAIN DIMENSIONS.
1-2
INSTALLER
Height
(mm)
Width (mm)
Depth (mm)
(L)
Caesar 14 3 = 375
250
Super Caesar 17 3 = 420
CONNECTIONS
DOMESTIC HOT WATER
AC
AF
1/2”
1/2”
630
GAS
G
3/4”
Domestic hot water outlet
Domestic cold water inlet
Gas supply
Electrical connection
MAINTENANCE TECHNICIAN
USER
Key:
AC -
AF -
G -
V -
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 failed ignition
block), the appliance can freeze.
To prevent the risk of freezing follow the instructions below:
- Protect the domestic hot water circuit against
freezing by using an accessory that is supplied
on request (anti-freeze kit) comprising two
electric heating elements, the relevant cables
and a control thermostat (carefully read the
installation instructions contained in the accessory kit pack).
Water heater anti-freeze protection is thus ensured
only if:
- the water heater is correctly connected to electricity power supply circuits;
- the main switch is on;
- the antifreeze kit components are efficient.
In these conditions the water heater is protected
against freezing to temperature of -15°C.
The warranty does not cover damage due to interruption of the electrical power supply and failure
to comply with that stated on the previous page.
1.4 GAS CONNECTION.
Our water heaters are designed to operate with
methane gas (G20) and LPG. Supply pipes must
be the same as or larger than the 3/4”G water
heater 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, which must comply with the technical
standards in force, as insufficient levels can
reduce generator output and cause malfunctions.
Ensure correct gas cock connection. The gas supply pipe must be suitably dimensioned according
to current regulations in order to guarantee correct gas flow rate to the burner even in conditions
of maximum generator output and to guarantee
appliance efficiency (technical specifications).
The coupling system must conform to technical
standards in force.
N.B.: if the water heater is installed in places
where the temperature falls below 0°C, the heating attachment pipes must be insulated.
6
Fuel gas quality. The appliance was designed
to operate with combustible gas free of impurities; otherwise it is advisable to fit special filters
upstream of the appliance to restore the purity
of the fuel.
Storage tanks (in case of supply from LPG
depot).
-New LPG storage tanks may contain residual
inert gases (nitrogen) that degrade the mixture
delivered to the appliance casing functioning
anomalies.
-Due to the composition of the LPG mixture,
layering of the mixture components may occur
during the period of storage in the tanks. This
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
INSTALLER
1.5 HYDRAULIC CONNECTION.
Attention: before connecting the water heater
and so as not to make the warranty null and void
on the DHW heat exchanger, wash the system
thoroughly (piping, etc.) in a way to remove
any residue that could compromise the good
functioning of the water heater.
Water connections must be made in a rational
way using the couplings on the water heater
template.
Attention: to preserve the duration and the efficiency features of the appliance, in the presence
of water whose features can lead to the deposit
of limescale, installation of the “polyphosphate
dispenser” kit is recommended.
1.6 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.
USER
Attention: 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.
MAINTENANCE TECHNICIAN
Also ensure that the electrical installation corresponds to maximum absorbed power specifications as shown on the water heater data-plate.
Water heaters are supplied complete with 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 a multi-pole circuit breaker with class
III over-voltage category. When replacing the
power supply cable, contact a qualified firm (e.g.
the Authorised 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
modulation board, use a 3.15A fast fuses. For
the main power supply to the appliance, never
use adapters, multiple sockets or extension leads.
N.B.: 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.
1-3
Cavo cable
di alimentazione
Power
7
INSTALLER
1.7 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.
Attention: The water heater must only be installed together with an original Immergas air
intake and flue gas exhaust system, in compliance with the standards in force. This system
can be identified by an identification mark and
special distinctive marking bearing the note:
“not for condensing boilers”.
MAINTENANCE TECHNICIAN
USER
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.
•N.B.: when installing horizontal pipes, a minimum inclination towards the water either of 3%
must be maintained and a section clip with pin
must be installed every 3 metres.
1-4
•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 4 ErP” model and a diaphragm of Ø
46 for the “Super Caesar 17 4 ErP” model (Fig.
1-5).
N.B.: the diaphragm is supplied as per standard
with the water heater.
1-5
• Resistance factors and equivalent lengths. Each
flue 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 single
component has a resistance corresponding to
a certain length in metres of pipe of the same
diameter; the so-called equivalent length, can
be 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 allows calculations to be made to
verify the possibility of setting up various flue
configurations.
•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).
•Coupling extension pipes and concentric
elbows. To install push-fitting extensions with
other elements of the flue, proceed as follows:
Install the concentric pipe or elbow with the
male side (smooth) on the female side (with lip
seal) to the end stop on the previously installed
element in order to ensure sealing efficiency of
the coupling.
Attention: if the exhaust terminal and/or
concentric extension pipe needs shortening,
consider that the internal duct must always
protrude by 5 mm with respect to the external
duct.
•N.B.: for safety purposes, do not obstruct the
water heater intake-exhaust terminal, even
temporarily.
Caesar 14 4 ErP discharge diaphragm.
Super Caesar 17 4 ErP discharge diaphragm.
Diaphragm
Extension in meters
Ø 60/100 horizontal pipe
Diaphragm
Extension in meters
Ø 60/100 horizontal pipe
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 metres of the
Ø 80 horizontal pipe with
two bends
Diaphragm
*Extension in metres
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.
8
*The values for maximum length are considered
with 1 metre of exhaust pipe and the remaining
on intake.
Concentric pipe Ø 60/100 m 1
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
Parallel split Ø 80
from Ø 60/100 to Ø 80/80
Intake m 7.1
Exhaust m 5.5
Intake m 20
Exhaust m 15
Intake m 14
USER
Terminal complete with concentric horizontal intakeexhaust Ø 60/100
Equivalent
length of
pipe in m
Ø 80
Exhaust m 10.6
Intake m 18
Exhaust 14
Intake m 3.8
Exhaust m 2.9
9
MAINTENANCE TECHNICIAN
TYPE OF DUCT
Equivalent
length in m of concentric pipe
Ø 60/100
Resistance
Factor
(R)
INSTALLER
1.8 TABLES OF RESISTANCE FACTORS
AND EQUIVALENT LENGTHS.
INSTALLER
1.9 OUTDOOR INSTALLATION IN
PARTIALLY PROTECTED AREA.
N.B.: a partially protected location is one in which
the appliance is not exposed to the direct action of
the weather (rain, snow, hail, etc..).
NOTE: this type of installation is only possible
when permitted by the laws in force in the appliance's country of destination.
•Configuration type B, open chamber and
forced draught.
Using the special coverage kit one can achieve
direct air intake (Fig. 1-6) and fumes exhaust in
a single flue or directly 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 environment in which the appliance is installed
(outside);
USER
- the flue exhaust must be connected to its own
individual flue or channeled directly into the
external atmosphere.
The technical regulations in force must be
respected.
• Coverage kit assembly (Fig. 1-7). Disassemble
the two caps covering the intake holes next to
the flue exhaust.
Position the diaphragm on the discharge hole:
Mount the cover by securing it to the appliance
with the screws supplied, which come with
their own gaskets. Fix the flange to the gasket
on the cover's hole with the designated strap
provided with the kit. Make sure you fix the 4
flaps of the strap. Engage the 90°, Ø 80 bend
with the male end (smooth) in the female end
(with lip seal) of the Ø 80 flange until it stops.
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.
Max. length of exhaust duct. The flue pipe (both
vertical or horizontal) can be extended to a max.
length of 12 linear metres. 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.
• 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, Ø 80/125 and
separator Ø 80/80 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.
Caesar 14 4 ErP: Ø 45 present inn the water
heater.
MAINTENANCE TECHNICIAN
Super Caesar 17 4 ErP: Ø 44 present in the
thermoformed kit.
Upper lid
1-6
Install the Ø 80 outlet flange on the central
hole of the flue exhaust, taking care to insert
the gasket supplied with the kit and tighten by
means of the screws provided.
1-7
The terminal kit includes:
No. 1 - Gasket
No. 1- Ø 80 discharge flange
No. 1- Bend 90° Ø 80
No. 1- Ø 80 Exhaust pipe
No. 1- Wall sealing plate
The cover kit includes:
No. 1- Thermoformed cover
No. 1- Discharge diaphragm Ø 44
No. 1- Discharge diaphragm Ø 45
No. 1- Gasket clamping strap
No. 6- Cover clamping screws
10
1-8
1.11 CONCENTRIC VERTICAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
N.B.: when the water heater is installed in areas
where very frigid temperatures can be reached,
a special anti-freeze kit is available that can be
installed as an alternative to the standard kit.
Installation of this terminal is governed by current technical regulations.
Concentric vertical intake and exhaust kit. This
vertical terminal is connected directly to the outside of the building for air intake and flue exhaust.
•Extensions for vertical kit Ø 60/100 (Fig. 1-12).
The kit with this configuration can be extended
to a max. straight vertical length of 4.7 m,
including the terminal. This configuration
corresponds to a resistance factor of 100. In
this case specific extensions must be requested.
Horizontal intake-exhaust kit Ø 60/100 Kit
assembly (Fig. 1-9): install the bend with flange
(2) onto the central hole of the water heater
inserting the gasket (1) and tighten using the
screws included in the kit. Couple the concentric
terminal pipe Ø 60/100 (3) with the male end
(smooth) into the female end (with lip seals)
of the bend (2) up to the stop, making sure that
the internal and external wall sealing plate have
been fitted, this will ensure sealing and joining
of the kit elements.
•Extensions for Ø 60/100 horizontal kit (Fig.
1-10). The kit with this configuration can be
extended up to a max. horizontal length of 3 m
including the terminal with grid and excluding
the concentric bend leaving the water heater.
This configuration corresponds to a resistance
factor of 100. In this case the special extensions
must be requested.
Vertical kit with aluminium tile Ø 60/100.
To use this kit one must use the fixing plate kit
60/100 (sold separately).
Kit assembly (Fig. 1-11): 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. Fit the male end (smooth)
of the adapter (3) into the female end of the
concentric flange (2). Imitation aluminium tile
installation. Replace the tile with the aluminium
sheet (5), shaping it to ensure that rainwater runs
off. Position the fixed half-shell (7) and insert
the intake-exhaust pipe (6). Fit the Ø 80/125
concentric terminal pipe with the male end (6)
(smooth) to the female end of the adapter (3)
(with lip gasket) up to the end stop; making sure
that the wall sealing plate (4) has been fitted, this
will ensure sealing and joining of the elements
making up the kit.
USER
•External grid. The Ø 60/100 intake/exhaust
terminal, if properly installed, is pleasant to
look at on the outside of the building. Make
sure that the external silicone wall sealing plate
is properly inserted in the wall.
N.B.: the vertical kit with aluminium tile enables
installation on terraces and roofs with a maximum slope of 45% (approx. 25°) and the height
between the terminal cap and half-shell (374
mm) must always be observed.
C12
C12
Max 2820
2
1
3
4
5
The kit includes:
N° 1 - Gasket (1)
N° 1 - Concentric bend Ø 60/100 (2)
N° 1 - Int./exhaust concentric terminal Ø 60/100 (3)
N° 1 - Internal wall sealing plate (4)
N° 1 - External wall sealing plate (5)
Max 2805
1-9
1-10
C32
6
4
3
2
The fixing plate kit includes:
N° 1 - Gasket (1)
N° 1 - Female concentric
flange (2)
The Kit includes:
N° 1 - Int./exhaust concentric pipe Ø 60/100 (3)
N° 1 - Ring (4)
N° 1 - Aluminium tile (5)
N° 1 - Fixed half-shell (6)
N° 1 - Mobile half-shell (7)
5%
Max 4
5
MAXIMUM LENGTH 4700 mm
7
C32
1
1-12
1-11
11
MAINTENANCE TECHNICIAN
This terminal is connected directly to the outside
of the building for air intake and flue exhaust. The
horizontal kit can be installed with the rear, right
side, left side or front outlet.
INSTALLER
1.10 CONCENTRIC HORIZONTAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
INSTALLER
1.12 SEPARATOR KIT INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
This kit allows air to come in from outside the
building and the fumes to exit from the chimney
or flue through divided flue exhaust and air
intake pipes. Combustion products are expelled
from pipe (S). Air is taken in through pipe (A)
for combustion. Both ducts can be routed in
any direction.
Separator kit Ø 80/80. Kit assembly (Fig. 1-13):
install the flange (4) on the central hole of the
water heater, interposing the 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 on
the water heater and tighten using the supplied
self-threading screws. Fit the male side (smooth)
to the bends (5) in the female side of the flanges
(3 and 4). Fit the intake terminal (6) with the
male side (smooth) in the female side of the bend
(5) up to the end stop, ensuring that the internal
and external wall sealing plates are fitted. Fit the
exhaust pipe (9) with the male end (smooth) in
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 kit elements.
•Installation clearances (Fig. 1-14). The minimum installation clearance measurements of
the Ø 80/80 separator terminal kit have been
stated in one limit condition.
C82
5
USER
7
S
• The figure (Fig. 1-15) shows the configuration
with vertical exhaust and horizontal intake.
• Extensions for separator kit Ø 80/80. The max.
vertical straight length (without bends) usable
for Ø 80 intake and exhaust pipes is 41 metres
of which 40 intake and 1 exhaust. This total
length corresponds to a resistance factor of
100. The total usable length obtained by summing the Ø 80 intake and exhaust pipe lengths
can reach, as a maximum, the values provided
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.
1-14
C42
5
9
A
4
3
1
6
7
8
2
C52
1-15
N°1
N°2
N°1
N°2
N°1
N°1
-
-
-
-
-
-
Female exhaust flange (4)
90° bend Ø 80 (5)
Intake terminal Ø 80 (6)
Internal rings (7)
External grey wall sealing plate (8)
Exhaust pipe Ø 80 (9)
C82
%
5
Max 4
MAINTENANCE TECHNICIAN
1-13
The kit includes:
N°1 - Exhaust gasket (1)
N°1 - Flange gasket (2)
N°1 - Female intake flange (3)
1-16
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*
* The air intake pipe can be increased to 2.5 metres if the exhaust bend
11
22.5*
is eliminated, 2 metres if the air intake bend is eliminated, 4.5 metres
12
21.5*
eliminating both bends.
Attention: if the installation requires 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.
12
- in configuration type B, the water heaters must
not be installed in bedrooms, bathrooms or in
bedsits.
- The installation of appliances in configuration
B is only recommended outdoors (in a partially
protected place) or in places that are not lived
in and which are permanently ventilated.
1.15 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 B 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 technical standards in force, by a
professionally qualified company. Chimney or
flue sections for connection of the flue exhaust
pipe must comply with requisites of technical
standards in force.
1.16 FLUES, CHIMNEYS AND CHIMNEY
CAPS.
The flues, chimneys and chimney pots for the
evacuation of combustion products must be in
compliance with technical standards in force.
Positioning the exhaust terminals. The wall flue
exhaust terminals must:
- be installed on external perimeter walls of the
building;
- avoid presence of sparks or open flames;
- bleed all air from the pipelines;
- check that the internal system is properly sealed
according to the specifications set forth by
technical regulations in force;
1.18 WATER HEATER START UP
(IGNITION).
In order to issue the Declaration of Conformity required by the laws in force, the following
requirements must be fulfilled to commission
the water heater (the operations listed below
must only be performed by a qualified firm and
without any unauthorised persons):
- check that the internal system is properly sealed
according to the specifications set forth by
technical regulations in force;
- ensure that the type of gas used corresponds to
water heater settings;
- check connection to a 230V-50Hz power
mains, correct L-N polarity and earthing connection;
- Check that there are external factors that may
cause the formation of fuel pockets;
- switch the water heater on and ensure correct
ignition;
-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 intervenes in the
event of gas supply failure and check the relative
intervention time;
-check activation of the main switch located
upstream of the water heater;
-check that the intake/exhaust concentric terminal (if fitted) is not blocked.
The water heater must not be started up even if
only one of the checks should be negative.
- be positioned according to the minimum distances specified in current technical standards.
13
•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.
INSTALLER
1.17 GAS SYSTEM START-UP.
To start up the system, refer to the technical
standard in force: This divides the systems and
therefore the start-up operations into three
categories: new systems, modified systems, reactivated systems.
In particular, for new gas systems:
- open windows and doors;
1.19 KITS AVAILABLE ON REQUEST.
•Polyphosphate dispenser kit. The polyphosphate dispenser reduces the formation of limescale and preserves the original heat exchange
and domestic hot water production conditions.
The water heater is prepared for application of
the polyphosphate dispenser kit.
•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
1.14 CONFIGURATION TYPE B, OPEN
CHAMBER AND FAN ASSISTED FOR
INDOORS.
The appliance can be installed inside buildings
in B mode; in this case, all technical rules, and
national and local regulations in force, must be
complied with.
- 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
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.
Combustion products exhaust of natural
draught 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.
MAINTENANCE TECHNICIAN
1.13 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 fumes. 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 set forth by standards in force.
1.20 WATER HEATER COMPONENTS.
MAINTENANCE TECHNICIAN
USER
INSTALLER
1-17
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 - Fumes 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 - Cold water inlet valve
17 - DHW probe (cold water input)
14
USE AND MAINTENANCE
INSTRUCTIONS
2.1 CLEANING AND MAINTENANCE.
The appliance must be serviced every year.
This ensures that the optimal safety, performance
and operating features that distinguish the appliance remain unchanged over time.
•Attenzione: the use of components involving
use of electrical power requires some fundamental rules to be observed:
-if the appliance is not to be used for a certain
period, disconnect the main power switch.
At the end of its service life the appliance must
not be disposed of like normal household waste
nor abandoned in the environment, but must
be removed by a professionally authorised
company. Contact the manufacturer for disposal
instructions.
-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 weathering (rain, sunlight,
etc.);
- the appliance power cable must not be replaced
by the user;
- if the cable is damaged, switch off the appliance
and solely contact an authorised company to
replace it;
USER
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 event of work or maintenance to structures
near ducting or flue extraction devices and their
accessories, switch off the appliance and on completion of the operations ensure an authorised
company verifies the efficiency of the ducting
or the 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
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 switch
Domestic hot water functioning
Temperatures 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
Power distributed
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.
MAINTENANCE TECHNICIAN
USER
Error
Code
Anomaly signalled
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.
Cause
N.B.: in these conditions the water heater is
considered still powered on.
•“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.
2.5TROUBLESHOOTING.
The water heater will signal any anomaly with
the flashing display along with the relative code
as per the table below:
Water heater status / Solution
01
No ignition block
In the event of request of domestic hot water production, the
water heater does not switch on within the preset time. Upon
appliance commissioning or after extended downtime, it may
be necessary to eliminate the block.
02
Safety thermostat
block (over-temperature)
During normal functioning, if a fault causes excessive overheatPress the Reset button (1).
ing internally, the water heater goes into block.
06
Domestic hot water
probe anomaly
The board detects an anomaly on the domestic hot water NTC
The water heater does not produce hot water (1).
probe.
Press the Reset button (1).
Attention: 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. By switching
the appliance on and off again, the 5 attempts are
re-acquired.
08
Maximum N° of reset
Number of allowed resets that have already performed.
11
Flue pressure switch
failure
This occurs when the intake and flue exhaust pipes are ob- If normal conditions are restored the water
structed, when the fan is blocked or the pressure switch is faulty. heater restarts without having to be reset (1).
12
Domestic hot water
inlet probe anomaly
The board detects an anomaly on the D.H.W. inlet probe
20
Parasite flame block
This occurs in the event of a leak on the detection circuit or
Press the Reset button (1).
anomaly in the flame control unit.
24
Push button control
panel anomaly
The board detects an anomaly on the pushbutton panel.
37
Low power supply
voltage
This occurs when the power supply voltage is lower than the If normal conditions are restored the water heater
allowed limits for the correct functioning of the water heater. restarts without having to be reset (1).
In this case the water heater continues to
produce domestic hot water but without optimal
performance (1).
If normal conditions are restored the water
heater restarts without having to be reset (1).
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Technical After-Sales 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
d2
d3
d4
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 SWITCHING OFF THE WATER
HEATER.
Press the button (1 Fig. 2-1) (
) until the
display turns off completely.
N.B.: in these conditions the water heater is
considered still powered on.
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.
16
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 an authorised company for the
suitable procedures and also ensure the electrical, water and fuel supply lines are shut off and
disconnected.
CHECKS 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
-
-
-
-
-
-
Fumes 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.
7
7
10
10
9
7
10
9
9
9
8
7
7
8
5
4
4 5
6
4 5
INSTALLER
1 Key:
B2
B6
B9
DS1
E3
F1
F2
M20
R5
S2
S3
S6
T2
Y1
Y2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Domestic hot water probe
Domestic hot water flow meter
Domestic hot water inlet probe
Display
Ignition / detection electrode
Phase fuse
Neutral fuse
Fan
Domestic hot water temperature selector switch
Stand-by / ON Button
Reset button
Flue pressure switch
Ignition transformer
Gas valve
Gas valve modulator
USER
2 3 3.3TROUBLESHOOTING.
MAINTENANCE TECHNICIAN
N.B.: maintenance operations must be carried
out by an authorised company (e.g. Authorised
After-Sales Technical Assistance Service).
- 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
take place on the burner ramp. The fan may
start but the safety air pressure switch does not
switch the contact over. Make sure:
1) that the intake-exhaust duct is not too long
(over allowed length).
2) that the intake-exhaust duct is not partially
blocked (on the exhaust or intake side).
3) the diaphragm of the flue exhaust is adequate
for the length of the intake-exhaust duct.
4) that the sealed chamber is sealed perfectly.
5) the fan power supply voltage is not less than
196 V.
-Irregular combustion (red or yellow flame).
Can be caused by: dirty burner, clogged lamellar pack, intake - exhaust terminal not installed
properly. Clean the above components and
ensure correct installation of the terminal.
-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.
-Ignition block see par. 2.5 and 1.4 (electric
connection).
- Poor 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 e.g. Authorised
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 appliance needs 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.
The gas conversion operation must be carried
out by an authorised company (e.g. Authorised
Technical After-Sales Service).
To convert to another type of gas the following
operations are required:
- disconnect 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;
- re-power the appliance;
- Use the push button control panel to select the
the gas parameter type (P2) and then select
(nG) in case of Methane supply or (LG) in the
case of LPG;
- adjust the water heater nominal heat output;
- adjust the water heater minimum heat output;
- seal the gas flow rate regulation devices (if settings are modified);
-after completing the conversion, apply the
sticker, contained in the conversion kit, near
the data nameplate. Using an indelible marker
pen, delete 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
1 - 230 Vac 50 Hz power supply
2 - The X6 connector is used for automatic inspection
3 - N.B.: the user interface is on the welding side of
the boiler board
4- Blue
5- Brown
6- Yellow/Green
7- Black
8- Grey
9- White
10- Red
3-2
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 a qualified company (e.g.
Authorised After-Sales 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.
Key:
1- Coil
2 - Minimum power adjustment screw
3 - Maximum power adjustment screw
4 - Gas valve outlet pressure point
5 - Gas valve inlet pressure point
6 - Protection hood
4
3
1
2
5
6
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
Range of values which can
be set
From 0 at 60 sec. (0 Standard
setting)
INSTALLER
SIT 845 Gas Valve
Parameter
P1
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.
- Turn the domestic hot water temperature selector switch (3 Fig. 2-1) to maximum.
- 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,
re-apply 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.
- adjust the corresponding value consulting the
following tables by turning the selector (3);
-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.
19
Range of values which can
Parameter
be set
G Town gas (first family gas)
LG (LPG) or nG (Methane)
P2
(nG The same as the type of gas
being used)
Ignition power value. The water heater has
electronic modulation that adapts the ignition
power according to requirement.
Ignition power value
Range of values which can
be set
from 0 % to 50 % (35 % Standard setting)
Parameter
P3
Display lighting. Establishes the display lighting mode.
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
MAINTENANCE TECHNICIAN
3.6 POSSIBLE ADJUSTMENTS.
• Adjustment of nominal heat output (Fig. 3-3).
USER
Gas type selection
3-3
INSTALLER
USER
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.
-Check that the internal system is properly
sealed according to technical regulations in
force;
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).
- temperature safety thermostat;
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.
- 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.
-Visually check that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- air pressure switch
- Check the condition and integrity of the electrical system and in particular:
-supply voltage cables must be inside the
fairleads;
-there must be no traces of blackening or
burning.
MAINTENANCE TECHNICIAN
Note: to ensure the water heater operates correctly; 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 ignition and operation.
- Check correct burner calibration.
-Check the operation of the appliance 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.
20
INSTALLER
3.12 CASING REMOVAL.
To facilitate water heater maintenance, the casing
can be completely removed by following these
simple instructions (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 you 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 OUTPUT.
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 4 ErP.
METHANE (G20)
THERMAL THERMAL BURNER GAS
POWER
POWER
FLOW RATE
BUTANE (G30)
PRESS. BURNER
NOZZLES
(kW)
(kcal/h)
(m3/h)
(mbar)
(mm H2O)
BURNER GAS
FLOW RATE
(kg/h)
PROPANE (G31)
PRESS. BURNER
NOZZLES
BURNER GAS
FLOW RATE
PRESS. BURNER
NOZZLES
(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
Super Caesar 17 4 ErP.
BURNER GAS
FLOW RATE
PRESS. BURNER
NOZZLES
BURNER GAS
FLOW RATE
PRESS. BURNER
NOZZLES
(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
INSTALLER
PRESS. BURNER
NOZZLES
PROPANE (G31)
USER
THERMAL THERMAL BURNER GAS
POWER
POWER
FLOW RATE
BUTANE (G30)
3.14 COMBUSTION PARAMETERS.
G20
G30
G31
Caesar 14 4 ErP
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 Q. Nom./Min.
CO with 0% O2 at Nom./Min. Q. Nom./Min.
ppm
70/ 145
78 / 174
40 / 172
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
NOX at 0% of O2 at Q. Nom./Min.
Super Caesar 17 4 ErP
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
%
6.80 / 1.70
8.11 / 2.10
7.85 / 1.91
supply pressure
CO2 at Q. Nom./Min.
CO with 0% O2 at Nom./Min. Q. Nom./Min.
ppm
40 / 190
75 / 234
54 / 223
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
NOX at 0% of O2 at Q. Nom./Min.
23
MAINTENANCE TECHNICIAN
METHANE (G20)
3.15 TECHNICAL DATA.
USER
INSTALLER
Caesar 14 4 ErP
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
Chimney losses with burner On
Appliance water content
Domestic hot water adjustable temperature
Domestic hot water circuit flow limiter at 2 bar
Min (dynamic) pressure, burner ON (in ascent)
Min (dynamic) pressure, burner ON (in descent)
Min (dynamic) flow rate, burner ON (in ascent)
Min (dynamic) flow rate, burner ON (in descent)
Domestic hot water circuit max. operating pressure
Withdrawal capacity in continuous service (∆T 25 °C) in mixing mode
Flow rate capacity in continuous duty (∆T 50 °C)
Full water heater weight
Empty water heater weight
Electrical connection
Nominal power absorption
Installed electric power
Fan power absorbed power
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 gas 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
Super Caesar 17 4 ErP
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+
3.16 KEY FOR DATA NAMEPLATE.
Md
Sr N°
Type
Qnw/Qn min.
NOx Class
CHK
Qnw/Qn max.
PMW
Cod. Md
Cod. PIN
Pn min.
D
Pn max.
TM
N.B.: the technical data is provided on the data plate on the water heater.
IE
Md
Cod. Md
Model
Model code
Sr N°
Serial Number
CHK
Check
Cod. PIN
Type
PIN code
Type of installation (ref. CEN TR 1749)
Qnw min.
Minimum DHW heat input
Qn min.
CH minimum heat input
Qnw max.
DHW maximum heat input
Qn max.
CH maximum heat input
Pn min.
Minimum heat output
Pn max.
Maximum heat output
PMW
Maximum domestic hot water pressure
D
TM
NOx Class
Specific flow rate
Maximum operating temperature
NOx Class
25
3.17 PRODUCT FICHE (IN COMPLIANCE WITH REGULATION 812/2013).
Caesar 14 4 ErP
I
Super Caesar 17 4 ErP
II
I
CAESAR 14 4 ERP
II
L
XL
A
A
A
A+
B
A
CB
C
D
ED
E
FF
G
G
++
33
52 dB
SUPER CAESAR 17 4 ERP
kW/h/annum
++
12
35
GJ/annum
Parameter
Annual electricity consumption for the
domestic hot water function (AEC)
A
A
A
A+
B
A
CB
C
D
ED
E
FF
G
G
52 dB
value
kW/h/annum
18
GJ/annum
Parameter
Annual electricity consumption for the
domestic hot water function (AEC)
33 kWh
value
35 kWh
Annual fuel consumption for the domestic
hot water function (AFC)
12 GJ
Annual fuel consumption for the domestic
hot water function (AFC)
18 GJ
Water heating energy efficiency ( ηwh)
75 %
Water heating energy efficiency ( ηwh)
80 %
For proper installation of the appliance refer
to chapter 1 of this booklet (for the installer)
and current installation regulations. For proper
maintenance refer to chapter 3 of this booklet (for
the maintenance technician) and adhere to the
frequencies and methods set out herein.
26
3.18 PARAMETERS FOR FILLING IN
THE PACKAGE FICHE.
Should you wish to install an assembly, starting
from the Caesar 14 4 ErP or Super Caesar 17 4
ErP water heater, use the package fiche in Fig. 3-8.
To fill it in correctly, enter the figures shown
in table Fig. 3-7 (as shown in the package fiche
facsimile Fig. 3-6) .
The remaining values must be obtained from
the technical data sheets of the products used
to make up the assembly (e.g. solar devices, in-
tegration heat pumps, temperature controllers).
Use sheet fig. 3-8 for “assemblies” related to the
domestic hot water function (e.g.: water heater
+ solar thermal system).
Facsimile for filling in domestic hot water production system package fiche.
1
Water heating energy efficiency of the water heater
‘I’
%
Stated load profile:
Solar contribution
From the board of the solar device
( 1,1
x
‘I’
-
10 % )
x
Auxiliary electricity
‘II’
-
‘III’
-
‘I’
+
=
2
3
Water heating energy efficiency of the set in
average climate conditions
%
%
Water heating energy efficiency class of the set in average climate conditions
G
F
E
D
C
B
A
A+
A++
A+++
M
< 27 % ≥ 27 % ≥ 30 % ≥ 33 % ≥ 36 % ≥ 39 % ≥ 65 % ≥ 100 % ≥ 130 % ≥ 163 %
L
< 27 % ≥ 27 % ≥ 30 % ≥ 34 % ≥ 37 % ≥ 50 % ≥ 75 % ≥ 115 % ≥ 150 % ≥ 188 %
XL
< 27 % ≥ 27 % ≥ 30 % ≥ 35 % ≥ 38 % ≥ 55 % ≥ 80 % ≥ 123 % ≥ 160 % ≥ 200 %
XXL
< 28 % ≥ 28 % ≥ 32 % ≥ 36 % ≥ 40 % ≥ 60 % ≥ 85 % ≥ 131 % ≥ 170 % ≥ 213 %
Water heating energy efficiency class in colder and hotter climate conditions
3
Colder:
2
- 0,2 x
3
Hotter:
=
%
=
%
2
+ 0.4 x
The energy efficiency of the set of products indicated in this sheet may not reflect the actual
energy efficiency after installation since such efficiency is affected by additional factors, such as
the heat loss in the distribution system and the size of the products compared to the size and
features of the building.
3-6
27
Parameters for filling in DHW package assembly chart.
Parameter
‘I’
‘II’
‘III’
Caesar 14 4 ErP
75
*
*
Super Caesar 17 4 ErP
80
*
*
* to be determined according to Regulation 812/2013 and transient calculation methods
as per Notice of the European Community no. 207/2014.
3-7
Domestic hot water production system package fiche.
1
Water heating energy efficiency of the water heater
_____
%
Stated load profile:
Solar contribution
From the board of the solar device
( 1,1
x _____ -
10 % )
Auxiliary electricity
x _____ -
____
+
- ______ =
2
3
Water heating energy efficiency of the set in
average climate conditions
%
%
Water heating energy efficiency class of the set in average climate conditions
G
F
E
D
C
B
A
A+
A++
A+++
M
< 27 % ≥ 27 % ≥ 30 % ≥ 33 % ≥ 36 % ≥ 39 % ≥ 65 % ≥ 100 % ≥ 130 % ≥ 163 %
L
< 27 % ≥ 27 % ≥ 30 % ≥ 34 % ≥ 37 % ≥ 50 % ≥ 75 % ≥ 115 % ≥ 150 % ≥ 188 %
XL
< 27 % ≥ 27 % ≥ 30 % ≥ 35 % ≥ 38 % ≥ 55 % ≥ 80 % ≥ 123 % ≥ 160 % ≥ 200 %
XXL
< 28 % ≥ 28 % ≥ 32 % ≥ 36 % ≥ 40 % ≥ 60 % ≥ 85 % ≥ 131 % ≥ 170 % ≥ 213 %
Water heating energy efficiency class in colder and hotter climate conditions
3
Colder:
2
- 0.2 x
3
Hotter:
=
%
=
%
2
+ 0.4 x
3-8
28

The energy efficiency of the set of products indicated in this sheet may not reflect the actual
energy efficiency after installation since such efficiency is affected by additional factors, such as
the heat loss in the distribution system and the size of the products compared to the size and
features of the building.
29
30
31
Cod. 1.038494ENG - rev. ST.002037/000 - 09/15 - Inglese per IRLANDA (IE)
This instruction booklet is made of ecological paper
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