Immergas ZEUS SUPERIOR 24 kW Operating instructions

ZEUS SUPERIOR
24  28  32 kW
Instruction and
recommendation booklet
*1.038785ENG*

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 qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. 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 conrm your satisfaction for the Immergas product.
Contact our area authorised aer-sales centre as soon as possible to request commissioning. Our technician will verify the correct functioning conditions; he
will perform the necessary calibrations and will demonstrate the correct use of the generator.
For any interventions or routine maintenance contact Immergas Authorised Centres: these have original spare parts and boast of specic preparation directly
from the manufacturer.
General recommendations
All Immergas products are protected with packaging suitable for transport.
e material must be stored in dry environments and protected from bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instruction booklet contains technical information on how installing Immergas boilers. For other issues related to installation of boilers (i.e.: safety in work
sites, environment protection, injury prevention), comply with the laws in force and technical standards.
In compliance with legislation in force, the systems must be designed by qualied 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 qualied
sta, intending sta with specic technical skills in the plant sector, as envisioned by the Law.
Improper installation or assembly of Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to persons, animals
and objects. Read the provided product instructions carefully in order to install the product correctly.
Maintenance must be carried out by skilled technical sta. e Immergas Authorised Aer-sales Service represents a guarantee of qualications and profes-
sionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially
dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this
book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any 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 fol-
lowing address: www.immergas.com
Product not intended for EU countries
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without forewarning.

INDEX
USER pageINSTALLER page MAINTENANCE TECHNICIAN page
1 Boiler installation.....................................5
1.1 Installation recommendations..................5
1.2 Main dimensions.......................................6
1.3 Anti-freeze protection. .............................6
1.4 GAS connection. .......................................7
1.5 Hydraulic attachment. ..............................7
1.6 Electrical connection................................7
1.7 Remote controls and room
chronothermostats (optional). ................8
1.8 External temperature probe (optional)..8
1.9 Immergas ue systems..............................9
1.10 Installation outside in a partially
protected place...........................................9
1.11 Installation inside....................................12
1.12 Fume exhaust to ue/chimney...............16
1.13 Ducting of existing ues.........................16
1.14 Flues, chimneys and chimney caps.......16
1.15 System lling............................................16
1.16 Gas system start-up.................................16
1.17 Boiler start-up (lighting)........................16
1.18 Circulation pump....................................17
1.19 Domestic hot water boiler device..........17
1.20 Kits available on request.........................18
1.21 Boiler components..................................18
2 User and maintenance instructions......19
2.1 Cleaning and maintenance. ...................19
2.2 General warnings. ...................................19
2.3 Control panel...........................................19
2.4 Description of functioning states..........20
2.5 Using the boiler........................................20
2.6 Fault and anomaly signals......................21
2.7 Boiler shutdown. .....................................23
2.8 Restoring heating system pressure........23
2.9 Draining the system................................23
2.10 Emptying the boiler. ...............................23
2.11 Anti-freeze protection. ...........................23
2.12 Case cleaning...........................................23
2.13 Decommissioning. ..................................23
2.14 Parameters and information menu.......24
3 Boiler commissioning (initial check) ...25
3.1 Plumbing layout. .....................................25
3.2 Wiring diagram.......................................26
3.3 Troubleshooting. .....................................27
3.4 Converting the boiler to other types of
gas..............................................................27
3.5 Checks following conversion to another
type of gas.................................................27
3.6 Possible adjustments of the gas valve. ..27
3.7 Programming the circuit board.............28
3.8 Automatic slow ignition function with
timed ramp delivery................................30
3.9 “Chimney sweep function”.....................30
3.10 Pump anti-block function......................30
3.11 ree-way anti-block system.................30
3.12 Radiator anti-freeze function. ...............30
3.13 Circuit board periodical self-check. .....30
3.14 Solar panels coupling function..............30
3.15 Casing removal........................................30
3.16 Yearly appliance check and
maintenance.............................................30
3.17 Variable heat power.................................32
3.18 Technical data..........................................33
3.19 Combustion parameters.........................34
3.20 Key for data plate.....................................35

5
1-1
INSTALLERUSER
MAINTENANCE TECHNICIAN
YES NO
1BOILER INSTALLATION
1.1 INSTALLATION
RECOMMENDATIONS.
e Zeus Superior kW boiler has been designed
for wall mounted installation only; they must
be used to heat, to produce domestic hot water
and similar purposes. e installation site and
relative Immergas accessories must have suitable
characteristics (both technical and structural),
in order to allow (always in safe, eciency and
easiness conditions):
- installation (according to the legislation and
technical standards in force);
- maintenance operations (including those
scheduled, periodical, ordinary and special);
- removal (to the outdoors in a place suitable
for loading and transporting appliances and
components) as well as any replacement with
equivalent appliances and/or components.
The wall surface must be smooth, without
any protrusions or recesses enabling access
to the rear part. ey are NOT designed to be
installed on plinths or oors (Fig. 1-1).
By varying the type of installation the
classication of the boiler also varies, precisely:
- B22 type boiler if installed using the relevant
terminal for air intake directly from the room
in which the boiler has been installed.
- C type boiler if installed using concentric pipes
or other types of pipes envisioned for the sealed
chamber boiler for intake of air and expulsion
of fumes.
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.
Attention: the manufacturer declines all liability
for damages caused by boilers removed from
other systems or for any non-conformities of
such equipment.
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
sucient space for normal servicing; therefore
it is advisable to leave clearance of at least 3 cm
between the boiler casing and the vertical sides
of the cabinet.
Leave adequate space above the boiler for
possible water and fume removal connections.
At least 60 cm must be le below the boiler
in order to guarantee replacement of the
magnesium anode.
Keep all flammable objects away from the
appliance (paper, rags, plastic, polystyrene, etc.).
Leave adequate space above the boiler for
possible water and fume removal connections.
At least 60 cm must be le below the boiler
in order to guarantee replacement of the
magnesium anode.
Keep all flammable objects away from the
appliance (paper, rags, plastic, polystyrene, etc.).
Do not place household appliances underneath
the boiler as they could be damaged if the safety
valve intervenes, if the drain trap is blocked, or
if there are leaks from the hydraulic connec-
tions; 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 boiler.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o and contact
an authorised company (e.g. the Authorised
Technical Assistance centre, which has
specically trained sta and original spare parts).
Do not attempt to modify or repair the appliance
alone.
Failure to comply with the above implies personal
responsibility and invalidates the warranty.
• Installation regulations:
- this boiler can be installed outside in a par-
tially protected area. 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.
- Installation in places with a re risk is pro-
hibited (for example: garages, closed parking
stalls), gas appliances and relative ue ducts,
ue exhaust pipes and combustion air intake
pipes.
- Installation is prohibited on the vertical
projection of cooking hobs.
Attention: Wall mounting of the boiler must
guarantee stable and ecient support for the
generator.
The plugs supplied are to be used only in
conjunction with the mounting brackets or xing
template to x the appliance to the wall; they only
ensure adequate supportif 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 orblock,
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 exclusivelyto x the relative
mounting bracket to the wall.
ese boilers are used to heat water to below
boiling temperature in atmospheric pressure.
ey must be connected to a heating system
and hot water circuit suited to their performance
and capacity.
Anti-Legionella thermal treatment of the Immer-
gas (which can be activated through the specic
function present on the set thermoregulation sys-
tems): during this phase, the water temperature
inside the storage tank exceeds 60 °C resulting in
burns hazards. Keep this DHW treatment under
control (and inform the users), to prevent unex-
pected damage to persons, animals and objects. If
required, a thermostatic valve must be installed
at the DHW outlet to prevent burns.

6
1-2
INSTALLERUSER
MAINTENANCE TECHNICIAN
Height
(mm)
Width
(mm)
Depth
(mm)
900 600 466
ATTACHMENTS
GAS PLANT DOMESTIC
HOT WATER
G R M AC AF
1/2” 3/4” 3/4” 1/2” 1/2”
1.2 MAIN DIMENSIONS.
Key:
G - Gas supply
R - System return
M - System delivery
RC - Domestic hot water re-circ
AC - Domestic hot water outlet
AF - Domestic hot water inlet
V - Electric attachment
1.3 ANTIFREEZE PROTECTION.
Minimum temperature -3°C. e boiler comes
standard with an antifreeze function that
activates the pump and burner when the water
temperature inside the boiler drops below 4°C.
In these conditions the boiler is protected against
freezing to an ambient temperature of -5°C.
Minimum temperature -15°C. If the boiler is
installed in a place where the temperature drops
below -5° C, the appliance can freeze.
To prevent the risk of freezing follow the
instructions below:
- protect the central heating circuit from freez-
ing by inserting a quality antifreeze liquid into
this circuit, which is specically adequate for
central heating systems and which is guaran-
teed by the manufacturer not to cause damage
to the heat exchanger or other components of
the boiler. e antifreeze liquid must not be
harmful to one’s health. e instructions of
the manufacturer of this liquid must be strictly
followed regarding the necessary percentage
with respect to the minimum temperature
at which the system must be kept. An aque-
ous solution must be made with potential
pollution class of water 2 (EN 1717:2002).
The materials used for the central heating
circuit of Immergas boilers resist ethylene
and propylene glycol based antifreeze liq-
uids (if the mixtures are prepared perfectly).
For life and possible disposal, follow the sup-
plier’s instructions.
- Protect the domestic hot water circuit against
freezing by using an accessory supplied on
request (antifreeze kit) comprising an electric
heating element, the relevant cables and a
control thermostat (carefully read the instal-
lation instructions contained in the accessory
kit pack).
In these conditions the boiler is protected against
freezing to temperature of -15°C.
Boiler antifreeze protection (both -3°C and -15°C)
is thus ensured only if:
- the boiler is correctly connected to the gas and
electricity power supply circuits;
- the boiler is powered constantly;
- the boiler is not in stand-by ( );
- the boiler is not in anomaly conditions (parag.
2.6);
- the essential components of the boiler and/or
antifreeze kit are not faulty.
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 boiler is installed in places where the
temperature falls below 0°C the domestic water
and heating connecting pipes must be insulated.

7
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.4 GAS CONNECTION.
Our boilers are designed to operate with methane
gas (G20) and LPG. Supply pipes must be the
same as or larger than the 1/2”G boiler tting.
Before connecting the gas line, carefully clean
inside all the fuel feed system pipes to remove
any residue that
could impair boiler eciency. Also make sure
the gas corresponds to that for which the boiler
is prepared (see boiler data-plate). If dierent,
the appliance must be converted for operation
with the other type of gas (see converting
appliance for other gas types). e dynamic gas
supply (methane or LPG)pressure must also be
checked according to the type used in the boiler,
as insucient levels can reduce generator output
and cause malfunctions.
Ensure correct gas cock connection. e gas
supply pipe must be suitably dimensioned
according to current regulations in order
to guarantee correct gas flow to the boiler
even in conditions of max. generator output
and to guarantee appliance efficiency
(technicalspecications). e coupling system
must conform to standards.
Combustible gas quality. e 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.
- Due to the composition of the LPG mixture,
layering of the mixture components may occur
during the period of storage in the tanks. is
can cause a variation in the heating power of
the mixture delivered to the appliance, with
subsequent change in its performance.
1.5 HYDRAULIC ATTACHMENT.
Attention: In order not to void the warranty
before making the boiler connections, carefully
clean the heating system (pipes, radiators, etc.)
with special pickling or descaling products
toremove any deposits that could compromise
correct boiler operation.
A chemical treatment for the thermal system
water is prescribed according to the current
technical regulations, until the system and the
lime scale apparatus is preserved (for example,
limescale deposits), from the slurry formation
and other noxious deposits.
Water connections must be made in a rational way
using the couplings on the boiler template. e
boiler safety valve outlet must be connected to a
discharge funnel. Otherwise, the manufacturer
declines any responsibility in case of ooding if
the drain valve cuts in.
Attention: the manufacturer declines all liability
in the event of damage caused by the installation
of an automatic lling system.
In order to meet the system requirements es-
tablished by the technical regulation in force in
relation to the pollution of drinking water, we
recommend installing the IMMERGAS anti-
backow kit to be used upstream of the cold
water inlet connection of the boiler. It is also
recommended that the heat transfer uid (e.g.
water + glycol) entered in the primary circuit
of the boiler (heating circuit), complies with the
local regulations in force.
Attention: to preserve the duration and the ef-
ciency features of the appliance, in the presence
of water whose features can lead to the deposit of
scale, installation of the “polyphosphate dispenser”
kit is recommended.
1.6 ELECTRICAL CONNECTION.
e “Zeus Superior kW” boiler has an IPX5D
protection rating for the entire appliance.
Electrical safety of the unit is reached when it
is correctlyconnected to an ecient earthing
system as specied by current safety standards.
Attention: the manufacturer declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an
ecient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
specications as shown on the boiler data plate.
Boilers are supplied complete with an “X” type
power cable without plug. e power supply
cable must be connected to a 230V ±10% / 50Hz
mains supply respecting L-N polarity and earth
connection , this network must also have a
multi-pole circuit breaker with class III over-
voltage category. When replacing the power
supply cable, contact a qualied technician (e.g.
the Aer-Sales Technical Assistance Service).
e power cable must be laid as shown. In the
event of mains fuse replacement on the control
card, use a 3.15Aquick-blow fuse.
For the main power supply to the appliance,
never useadapters, multiple sockets or extension
leads.

8
1-3 1-4
1-5 1-6
45
31
58
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.7 REMOTE CONTROLS AND
ROOM CHRONOTHERMOSTATS
OPTIONAL.
e boiler is prepared for application of room
chronothermostats and external probe. ese
Immergas components are available as separate
kits to the boiler and are supplied on request.
All Immergas chronothermostats are connected
with 2 wires only.
Carefully read the user and assembly instructions
contained in the accessory kit.
• Immergas On/O digital chrono-thermostat
(Fig. 1-3). e chrono-thermostat allows:
- to set two room temperature values: one for
day (comfort temperature) and one for night
(lower temperature);
- set a weekly program with four daily switch-
on/o;
- selecting the required function mode from
the various possible alternatives:
- manual operation (with adjustable
temperature).
- automatic operation (with set program).
- forced automatic operation (temporarily
modifying the temperature of the automatic
program).
e chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• ere are two types of Digital Remote ControlV2
(CARV2) (Fig. 1-3) and Super Remote Friend
Control (Super CAR) (Fig. 1-4) both with room
chronothermostat functioning. In addition to
the functions described in the previous point,
the Remote Friend ControlV2 enables the
user to control all the important information
regarding operation of the appliance and the
heating system with the opportunity of easily
intervening on the previously set parameters
without having to go to the place where the
appliance is installed.The Remote Friend
ControlV2 panel is provided with self-diagnosis
to display any boiler functioning anomalies.
e climate chronothermostat incorporated in
the remote panel enables the system delivery
temperature to be adjusted to the actual needs
of the room being heated, in order to obtain
the desired room temperature with extreme
precision and therefore with evident saving in
running costs. e CARV2 is fed directly by the
boiler by means of the same 2 wires used for the
transmission of data between boiler and device.
Important: If the system is subdivided into
zones using the relevant kit, the CARV2 and
the Super CAR must be used with its climate
thermostat function disabled, i.e. it must be set
to On/O mode.
CARV2,SuperCARorOn/O chronothermostat
electric connection (Optional). e operations
described below must be performed after
having removed the voltage from the appliance.
The eventual thermostat or On/Off room
chronothermostat must be connected to
terminals 40 and 41 eliminating jumper X40
(Fig. 3-2). Make sure that the On/O thermostat
contact is of the “clean” type, i.e. independent
of the mains supply; otherwise the electronic
adjustment circuit board would be damaged. e
eventual CARV2 or Super CAR must be connected
by means of terminals IN+ and IN- to terminals
42 and 43, eliminating jumper X40 on the
terminal board (in the boiler) respecting polarity
(Fig. 3-2). Connection with the wrong polarity
prevents functioning, but without damaging the
CARV2. e boiler works with the parameters
set on the Remote Friend ControlV2 only if the
boiler main selector is turned to Domestic/
Remote Friend ControlV2. e boiler can only
be connected to one remote control.
Important: If the Remote Friend ControlV2 is
used arrange two separate lines in compliance
with current regulations regarding electrical
systems.
Boiler pipes must never be used to earth the
electric or telephone lines. Ensure elimination
of this risk before making the boiler electrical
connections.
1.8 EXTERNAL TEMPERATURE PROBE
OPTIONAL.
e boiler is designed for the application of the
external temperature probe (Fig. 1-5), which is
available as an optional kit. Refer to the relative
instruction sheet for positioning of the external
probe.
is probe (Fig. 1-5) can be connected directly to
the boiler electrical system and allows the max.
system delivery temperature to be automatically
decreased when the outside temperature
increases, in order to adjust the heat supplied to
the system according to the change in external
temperature. e external probe always operates
when connected, regardless of the presence
or type of room chronothermostat used and
can work in combination with Immergas
chronothermostats). e correlation between
system delivery temperature and outside
temperature is determined by the parameters
set in the “M5” menu under “P66” according to
the curves represented in the diagram (Fig. 1-6).
e external probe electrical connection must be
made on clamps 38 and 39 on the boiler circuit
board (Fig. 3-2).
EXTERNAL PROBE
Delivery temperature correction laws Depending on the external
temperature and user adjustments of the heating temperature.
TM-MAX/MIN = Selected delivery
temp. range.
TE = External temperature.
Comando Amico Remoto remote controlV2 (CARV2)
On/O digital timer thermostat.
Super Comando Amico Remoto remote control
(Super CAR)

9
1-7
1-9
1-8
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.9 IMMERGAS FLUE SYSTEMS.
Immergas supplies various solutions separately
from the boiler regarding the installation
of air intake terminals and flue extraction;
fundamental for boiler operation.
Important: the boiler must only be installed
together with an original Immergas air intake
and fume extraction system. is system can
be identied by a special distinctive marking
bearing the note: “not for condensing boilers”.
e fume exhaust pipes must not be in contact
with or near flammable materials and must
not cross building structures or walls made of
ammable materials.
• Resistance factors and equivalent lengths. .
Each flue extraction system component is
designed with a Resistance Factor based on
preliminary tests and specied in the table
below The resistance factor for individual
components does not depend either on the type
of boiler on which it is installed or the actual
dimensions. It is based on the temperature
of fluids conveyed through the ducts and
therefore varies according to applications for air
intake or ue 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, obtained
from the ration between he relative Resistance
Factors. All boilers have an experimentally
obtainable maximum Resistance Factor equal to
100. e maximum Resistance Factor allowed
corresponds to the resistance encountered with
the maximum allowed pipe length for each
type of Terminal Kit. is information enables
calculations to verify the possibility of various
congurations of ue extraction systems.
Positioning of double lip seals. For correct
positioning of lip seals on elbows and extensions,
follow the assembly direction given in the gure
(Fig. 1-7).
1.10 INSTALLATION OUTSIDE IN
A PARTIALLY PROTECTED PLACE.
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 ap-
pliance’s country of destination.
• Conguration type B, open chamber and
forced draught.
In this configuration the relevant terminal
must be used (present in the suction kit for the
installation in question) to be placed on the most
internal hole of the boiler (Fig. 1-9). Suction of
the air is direct from the environment in which
the boiler is installed and the discharge of fumes
in single ue or directly to the outside.
e boiler in this conguration is classied as
type B22.
With this conguration:
- air intake takes place directly from the
environment in which the boiler is installed
and only functions in permanently ventilated
rooms;
- the fumes pipe must be connected to its own
individual ue or channelled directly into the
external atmosphere.
erefore the technical regulations in force must
be respected.
• Fitting the cover kit (Fig. 1-9) Remove the plug
and the seal present from the hole.
- Zeus Superior 24 kW: leave the suction hole
free.
- Zeus Superior 28 kW: mount the shaped
sheet steel onto the inlet hole to divide the
air entering.
- Zeus Superior 32 kW: mount the at sheet
steel onto the inlet hole to divide the air
entering.
Install the Ø 80 outlet ange on the central hole of
the boiler, taking care to insert the seal supplied
with the kit andtighten by means of the screws
provided. Install the top cover, xing it with
the screws previously removed from the lateral
plugs. Engage the 90°, Ø 80 bend with the male
end (smooth) in the female end (with lip seal)
of the Ø 80 ange until it stops. Cut the seal in
the relative groove at the desired diameter (Ø
80), run it along the bend and x it using the
sheet steel plate. Insert the exhaust pipe with
the male end (smooth) into the female side of
the 90° bend, Ø 80, making sure that the relative
washer has already been introduced. is will
ensure tightness and coupling of the elements
making up the kit.
Max. length of exhaust flue. The flue pipe
(vertical or horizontal) can be extended to a
max. length of 12 m straight route, using insulated
pipes (Fig. 1-26). To prevent problems of fume
condensate in the exhaust pipe Ø 80, due to fume
cooling through the wall, the length of the pipe
must be limited to just 5 m. (Fig. 1-23).
e cover kit includes:
N°1 - Heat moulded cover
N°1 - Seal clamping plate
N°1 - Seal
N°1 - Seal tightening band
N°1 - Shaped sheet steel for Zeus Superior 28 kW
N°1 - Flat sheet steel for Zeus Superior 32 kW
e terminal kit includes:
N°1 - Seal
N°1 - Exhaust ange Ø 80
N°1 - CBend90° Ø 80
N°1 - Exhaust pipe Ø 80
N°1 - Ring

10
1-10
INSTALLERUSER
MAINTENANCE TECHNICIAN
• Coupling of extension pipes and elbows.To
install possible coupling extensions on other
fume extraction elements, proceed as follows::
Fit the male end(smooth) of the pipe or elbow
up to the stop on the female end (with lip seals)
of the previously installed element; this will
ensure correct seal and joining of the elements.
• Conguration without cover kit in a partially
protected location (boiler type C).
By leaving the side plugs fitted it is possible
to install the appliance externally without the
cover kit. Installation is carried out using the
horizontal concentric Ø60/100, Ø80/125 and
Ø80/80 separator kits.

11
INSTALLERUSER
MAINTENANCE TECHNICIAN
Table of the resistance factors and equivalent lengths.
DUCT TYPE Resistance
Factor(R)
Equivalent length
in m of concentric pipe
Ø 60/100
Equivalent length
in m of concentric pipe
Ø 80/125
Equivalent length
in metres
of pipe Ø 80
Concentric pipe Ø 60/100 m 1 Intake and
Exhaust 16,5 m 1 m 2,8 Intake m 7,1
Exhaust m 5,5
90° bend concentric Ø 60/100 Intake and
Exhaust 21 m 1,3 m 3,5 Intake m 9,1
Exhaust m 7,0
45° bend concentric Ø 60/100 Intake and
Exhaust 16,5 m 1 m 2,8 Intake m 7,1
Exhaust m 5,5
Terminal complete with concentric
horizontal intake-exhaust Ø 60/100 Intake and
Exhaust 46 m 2,8 m 7,6
Intake m 20
Exhaust m 15
Terminal complete with concentric
horizontal intake-exhaust Ø 60/100 Intake and
Exhaust 32 m 1,9 m 5,3 Intake m 14
Scarico m 10,6
Terminal complete with concentric vertical
intake-exhaust
Ø 60/100 Intake and
Exhaust 41,7 m 2,5 m 7
Intake m 18
Exhaust m 14
Concentric pipe
Ø 80/125 m 1 Intake and
Exhaust 6 m 0,4 m 1,0 Intake m 2,6
Exhaust m 2,0
90° bend concentric Ø 80/125 Intake and
Exhaust 7,5 m 0,5 m 1,3 Intake m 3,3
Exhaust m 2,5
45° bend concentric Ø 80/125 Intake and
Exhaust 6 m 0,4 m 1,0 Intake m 2,6
Exhaust m 2,0
Terminal complete with concentric
vertical intake-exhaust Ø 80/125
Intake and
Exhaust 33 m 2,0 m 5,5
Intake m 14,3
Exhaust m 11,0
Concentric vertical
intake-exhaust terminal
Ø 80/125
Intake and
Exhaust 26,5 m 1,6 m 4,4 Intake m 11,5
Exhaust m 8,8
Terminal complete with concentric
horizontal intake-exhaust Ø 80/125 Intake and
Exhaust 39 m 2,3 m 6,5
Intake m 16,9
Exhaust m 13
Concentric horizontal
intake-exhaust terminal
Ø 80/125
Intake and
Exhaust 34 m 2,0 m 5,6 Intake m 14,8
Exhaust m 11,3
Concentric adapter from Ø 60/100
to Ø 80/125 with condensate collector Intake and
Exhaust 13 m 0,8 m 2,2 Intake m 5,6
Exhaust m 4,3
Concentric adapter from
Ø 60/100 to Ø 80/125 Intake and
Exhaust 2 m 0,1 m 0,3 Intake m 0,8
Exhaust m 0,6
Pipe Ø 80, 1 m(with or without insulation) Intake 2,3 m 0,1 m 0,4 Intake m 1,0
Exhaust 3 m 0,2 m 0,5 Exhaust m 1,0
Complete intake terminal Ø 80, 1 m
(with or without insulation) Intake 5 m 0,3 m 0,8 Intake m 2,2
Intake terminal Ø 80
Exhaust terminal Ø 80 Intake 3 m 0,2 m 0,5 Intake m 1,3
Exhaust 2,5 m 0,1 m 0,4 Exhaust m 0,8
Bend 90° Ø 80 Intake 5 m 0,3 m 0,8 Intake m 2,2
Exhaust 6,5 m 0,4 m 1,1 Exhaust m 2,1
Bend 45° Ø 80 Intake 3 m 0,2 m 0,5 Intake m 1,3
Exhaust 4 m 0,2 m 0,6 Exhaust m 1,3
Split parallel Ø 80
from Ø 60/100 to Ø 80/80 Intake and
Exhaust 8,8 m 0,5 m 1,5 Intake m 3,8
Exhaust m 2,9

12
C12
1-11
C12
C12 C12
C12
1-12
1-14
1-151-13
1
25
4
3
INSTALLERUSER
MAINTENANCE TECHNICIAN
e kit includes:
N°1 - Seal (1)
N°1 - Concentric 90° curve (2)
N°1 - Intake/exhaust concentric pipe
Ø60/100 (3)
N°1 - Internal ring (4)
N°1 - External ring (5)
1.11 INSTALLATION INSIDE.
• Type C conguration, sealed chamber and
forced draught.
Horizontal intake kits - exhaust Ø 60/100. Kit
assembly (Fig. 1-11): install the bend with ange
(2) on the most internal hole of the boiler inserting
the seal (1) and tighten using the screws present
in the kit. Engage the terminal pipe (3) with the
male side (smooth), into the female side (with lip
seal) of the curve (2) until it stops, making sure
the relevant internal and external rings are tted,
this will ensure hold and joining of the elements
making up the kit.
N.B.: when the boilers are 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 install snap-t extensions with
other elements of the fume extraction elements
assembly, follows: fit the concentric pipe or
elbow with the male (smooth) on the female
section (with lip seal) to the end stop on the
previously installed element to ensure sealing
eciency of the coupling.
e Ø 60/100 horizontal intake-exhaust kit can
be installed with the rear, right side, le side and
front outlet.
• Application with rear outlet (Fig. 1-12). e
970 mm pipe length enables routing through a
max. thickness 673 mm. Normally the terminal
must be shortened. Calculate the distance by
adding the following: part thickness + internal
projection + external projection. e minimum
projection values are given in the gure.
• Application with side outlet (Fig. 1-13); Using
the horizontal intake/exhaust kit, without the
special extensions, the maximum distance
between the vertical exhaust axis and the outside
wall is 905 mm.
N.B.: when the boilers are 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.
• Extensions for horizontal kit. e horizontal
intake/exhaust kit Ø 60/100 can be extended
up to a max. horizontal distance of 3000 mm
including the terminal with grille and excluding
the concentric bend leaving the boiler. is
conguration corresponds to a resistance factor
of 100. In these cases the special extensions must
be requested.
Connection with 1 extension (Fig. 1-14). Max.
distance between vertical boiler axis and external
wall: mm 1855.
Connection with N°2 extensions (Fig. 1-15).
Max. distance between the boiler vertical axis
and external wall 2805.

13
C12
1-16
C12
1-17
1
26
4
35
C32
1-191-18
C32
6
2
1
3
4
5
7
8
INSTALLERUSER
MAINTENANCE TECHNICIAN
e kit includes:
N°1 - Seal (1)
N°1 - Concentric bend Ø 60/100 (2)
N°1 - Adapter Ø 60/100 for Ø 80/125 (3)
N°1 - Concentric intake/exhaust terminal
Ø Ø 80/125(4)
N°1 - Internal ring (5)
N°1 - External ring (6)
e kit includes:
N°1 - Seal (1)
N°1 - Female concentric ange (2)
N°1 - Adapter Ø 60/100
per Ø 80/125 (3)
N°1 - Ring (4)
N°1 - Aluminium tile (5)
N°1 - Intake/Exhaust concentric pipe
Ø 80/125 (6)
N°1 - Fixed half-shell(7)
N°1 - Mobile half-shell (8)
Max 12200 mm
Max 4700 mm
Horizontal intake/exhaust kits –Ø 80/125.
Kit assembly (Fig. 1-16): install the bend with
ange (2) on the most internal hole of the boiler
inserting the seal (1) and tighten using the
screws in the kit. Fit the male end (smooth) of
the adapter (3) up to the stop on the female end
of the bend (2) (with lip seal).
Fit the male end (smooth) of the Ø 80/125
concentric terminal pipe (4) up to the stop on
the female end of the adapter (3) (with lip seals),
making sure the relevant internal and external
rings are tted, this will ensure hold and joining
of the elements making up the kit.
• Coupling extension pipes and concentric
elbows Ø 80/125snap-t extensions with other
elements of the fume extraction elements
assembly, follows: t the concentric pipe or
elbow with the male (smooth) on the female
section (with lip seal) to the end stop on the
previously installed element; this will ensure
correct hold and joining of the elements.
Attention: if the exhaust terminal and/or
extension concentric pipe needsshortening,
consider that the internal duct must always
project by 5 mm with respect to the external duct.
Normally the horizontal intake/exhaust kit Ø
80/125 is used if particularly long extensions
are required; the kit Ø 80/125 can be installed
with the rear, right side, le side or front outlet.
• Extensions for horizontal kit. e horizontal
intake/exhaust kit Ø 80/125 can be extended
up to a maximum horizontal length of 7300 mm
including the terminal with grille and excluding
the concentric bend leaving the boiler and the
adapter Ø 60/100 in Ø 80/125 (Fig. 1-17).is
conguration corresponds to a resistance factor
of 100. In this case the special extensions must
be requested.
N.B.: When installing the ducts, a section
clamp with pin must be installed every 3
metres.
• External grill. N.B.: for safety purposes, do not
even temporarily obstruct the boiler intake/
exhaust terminal.
Vertical kit with aluminium tile Ø 80/125.
Kit assembly (Fig. 1-18): install the concentric
ange (2) on the most internal hole of the boiler
inserting the seal (1) and tighten using the screws
in the kit. Fit the male end (smooth) of the
adapter (3) in the female end of the concentric
ange (2). Imitation aluminium tile installation.
Replace the tile with the aluminium sheet (5),
shaping it to ensure that rainwater runs off.
Position the xed half-shell (7) on the aluminium
tile and insert the intake/exhaust pipe (6). Fit the
male end (smooth) of the Ø 80/125 concentric
terminal pipe (6) up to the stop on the female
end of the adapter (3) (with lip seals), making
sure that the ring is already tted (4), this will
ensure sealing and joining of the elements
making up the kit.
• Coupling extension pipes and concentric
elbows. To install possible coupling extensions
on other fume extraction elements, proceed
as follows: t the male end (smooth) of the
concentric pipe or concentric elbow up to the
stop on the female end (with lip seals) of the
previously installed element; this will ensure
correct hold and joining of the elements.
Attention: 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.
is specic terminal enables ue exhaust and
air intake in a vertical direction.

14
C82
1-20
C42
C52
1-21
1-23
C82
5
7
6
1
3
2
89
6
10
8
4
S
A
1-22
AS
INSTALLERUSER
MAINTENANCE TECHNICIAN
e Kit includes:
N°1 - Exhaust seal (1)
N°1 - Flange seal (2)
N°1 - Female intake ange (3)
N°1 - Female exhaust ange (4)
N°1 - Anti-pulse sheet (5)
N°2 - bend 90° Ø 80 (6)
N°1 - Intake terminal Ø 80 (7)
N°2 - Internal rings (8)
N°1 - External ring (9)
N°1 - Exhaust pipe Ø 80 (10)
Max. usable lengths
(including intake terminal with grill and two 90° bends)
NON-INSULATED PIPE INSULATED PIPE
Exhaust (m) Intake (m) Exhaust (m) Intake (m)
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*
* e 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, and 4.5 metres
eliminating both bends.
11 22,5*
12 21,5*
N.B.: the vertical kit Ø 80/125 with aluminium
tile enables installation on terraces and roofs with
maximum slope of 45% (24°). e height between
the terminal cap and half-shell (374 mm) must
always be respected.
e vertical kit with this conguration can be
extended up to a maximum of 12200 mm vertical
rectilinear, including the terminal (Fig. 1-19).
is conguration corresponds to a resistance
factor of 100. In this case specic extensions
must be requested.
The terminal Ø 60/100 can also be used for
vertical exhaust, in conjunction with concentric
ange code no. 3.011141 (sold separately). e
height between the terminal cap and half-shell
(374 mm) must always be respected (Fig. 1-19).
e vertical kit with this conguration can be
extended to a max. straight vertical length of 4700
mm, including the terminal (Fig. 1-19).
Separator kit Ø 80/80. e separator kit Ø 80/80,
enables separation of the exhaust ues and air
intake pipes according to the diagram shown in
the gure. (Fig. 1-21). Fumes are expelled from
duct (S). Air is taken in through duct (A) for
combustion. Both ducts can be routed in any
direction.
• Assembly of separator kit Ø 80/80. Install the
ange (4) on the most internal hole of the boiler
inserting the seal (1) and tighten using the
hex and athead screws supplied with the kit,
introduce the anti-pulse sheet up to stop (5).
Remove the at ange in the most external hole
with respect to the central one and replace with

15
1-25
1-26
C82
1-24
5
4
1
3
2
6789
9
11
11
5
10
S
A
12
C82 C82
A S
A S
INSTALLERUSER
MAINTENANCE TECHNICIAN
e Kit includes:
N°1 - Exhaust seal (1)
N°1 - Flange seal(2)
N°1 - Female intake ange (3)
N°1 - Female exhaust ange (4)
N°1 - Anti-pulse sheet (5)
N°1 - Bend 90° Ø 80 (6)
N°1 - Pipe closure cap (7)
N°1 - Insulated exhaust terminal Ø 80 (8)
N°2 - Internal rings (9)
N°1 - External ring (10)
N°1 - Insulated exhaust pipe Ø 80 (11)
N°1 - Concentric bend 90° Ø 80/125 (12)
ange (3) inserting the seal (2) already tted
on the boiler and tighten using the self-tapping
screws supplied. Fit the male end (smooth) to
the bends (6) in the female end of the anges (3
and 4). Fit the male end (smooth) of the intake
terminal (6) up to the stop on the female end
of the bend (5), making sure that the relevant
internal and external rings are fitted. Join
the exhaust pipe (10) with the male section
(smooth) in the female section of the bend
(6) to the end stop, ensuring that the internal
washer is tted; this will ensure the sealing
eciency of the kit components.
• Snap t extension pipe ttings and elbows. To
install snap-t extensions with other elements
of the fume extraction elements assembly,
proceed as follows: t the pipe or elbow with
the male section (smooth) in the female section
(with lip seal) to the end stop on the previously
installed element; in this way sealing eciency
of the couplings is assured.
• e gure (Fig. 1-21) shows the conguration
with vertical exhaust and horizontal intake.
• Installation clearances. e gure (Fig. 1-22)
gives the min. installation space dimensions
of the Ø 80/80 separator terminal kit al limit
condition.
• Extensions for separator kit Ø 80/80. e max.
vertical straight length (without bends) usable
for Ø 80 intake and exhaust pipes is 41 metres
of which 40 intake and 1 exhaust. is total
length corresponds to a resistance factor of 100.
e total usable length, obtained by adding the
length of the intake and exhaust pipes Ø 80,
must not exceed the maximum values given
in the following table. If mixed accessories or
components are used (e.g. changing from a
separator Ø 80/80 to a concentric pipe), the
maximum extension can be calculated by using
a resistance factor for each component or the
equivalent length. e sum of these resistance
factors must not exceed 100.
• Temperature loss in fume ducts (Fig. 1-23).
To prevent problems of fume condensate in
the exhaust pipe Ø 80, due to fume cooling
through the wall, the length of the pipe must
be limited to just 5 m. If longer distances must
be covered, use Ø 80 pipes with insulation (see
insulated separator kit Ø 80/80 chapter).
Insulated separator kit .Kit assembly (Fig. 1-24):
install ange (4) on the most internal hole of the
boiler, tting seal (1), and tighten with the at-
tipped hex screws included in the kit. Remove
the at ange on the lateral hole (depending on
installation requirements) andreplace with ange
(3) inserting seal (2) already tted on the boiler
and tighten using the self-tapping screws supplied.
Insert and slide cap (6) onto bend (5) from the
male side (smooth), and join bends (5) with the
male side (smooth) in the female side of ange
(3). Fit bend (11) with the male side (smooth)
in the female side of ange (4). Fit the male end
(smooth) of the intake terminal (7) up to the stop
on the female end of the bend (5), making sure
you have already inserted the rings (8 and 9) that
ensure correct installation between pipe and wall,
then x the closing cap (6) on the terminal (7). Join
the exhaust pipe (10) with the male side (smooth)
in the female side of the bend (11) to the end stop,
ensuring that the washer (8) is already inserted
for correct installation between the pipe and ue.
• Coupling of extension pipes and elbows. To
install snap-t extensions with other elements
of the fume exhaust system, proceed as follows:
t the male end (smooth) of the concentric pipe
or concentric elbow up to the stop on the female
end (with lip seals) of the previously installed
element; this will ensure correct hold and joining
of the elements.
• Insulation of separator terminal kit. In case of
problems of fume condensate in the exhaust
pipes or on the outside of intake pipes, Immergas
supplies insulated intake and exhaust pipes on
request. Insulation may be necessary on the
exhaust pipe due to excessive temperature loss
of fumes during conveyance. Insulation may be
necessary on the intake pipe as the air entering
(if very cold) may cause the outside of the pipe to
fall below the dew point of the environmental air.
e gures (Fig. 1-25 ÷ 1-26) illustrate dierent
applications of insulated pipes .
Insulated pipes are formed of a Ø 80 internal
concentric pipe and a Ø 125 external pipe with
static air space. It is not technically possible
to start with both Ø 80 elbows insulated, as
clearances will not allow it. However starting
with an insulated elbow is possible by choosing
either the intake or exhaust pipe. When starting
with an insulated intake bend, it must be
inserted onto its ange up to the stop on the
fume exhaust ange, which will ensure that the
two intake and exhaust outlets are at the same
height.
• Temperature loss in insulated fume ducting.
To prevent problems of fume condensate in
the insulated exhaust pipe Ø 80, due to cooling
through the wall, the exhaust pipe length must
be limited to 12 metres. e gure (Fig. 1-26)
illustrates a typical insulation application in
which the intake pipe is short and the exhaust
pipe very long (over 5 m). e entire intake
pipe is insulated to prevent moist air in the
place where the boiler is installed, condensing
in contact with the pipe cooled by air entering
from the outside. The entire exhaust pipe,
except the elbow leaving the splitter, is insulated
to reduce heat loss from the pipe, thus
preventing the formation of fume condensate.
N.B.: When installing the insulated pipes, a
section clamp with pin must be installed every
2 metres.

16
INSTALLERUSER
MAINTENANCE TECHNICIAN
• Conguration type B, open chamber and
forced draught.
By removing the most external cap on the sealed
chamber and using the cover kit (optional) air
intake takes place directly from the environment
in which the boiler is installed and the fumes
are expelled in an individual ue or directly
to the outside.e boiler in this conguration,
following the assembly instructions (Fig. 1-8÷1-
9), is classied as type B.
With this conguration:
- air intake takes place directly from the
environment in which the boiler is installed
and only functions in permanently ventilated
rooms;
- the fumes pipe must be connected to its own
individual ue or channelled directly into the
external atmosphere;
- type B open chamber boilers 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 nes, cement, etc.), which may be
damaging for the components of the appliance
and jeopardise functioning.
When using type B installation conguration
indoors, it is compulsory to install the relative
upper cover kit along with the fumes discharge
kit.
The technical regulations in force must be
respected.
1.12 FUME EXHAUST TO FLUE/
CHIMNEY.
Flue exhaust does not necessarily have to be
connected to a branched type traditional ue. Flue
exhaust can be connected to a special LAS type
multiple ue. Multiple and combine ues must
be specially designed according to the calculation
method and requirements of the standards, by
professionally qualied technical personnel.
Chimney or ue sections for connection of the
exhaust pipe must comply
with standard requisites.
1.13 DUCTING OF EXISTING FLUES.
With a specic “ducting system” it is possible
to reuse existing ues, chimneys and technical
openings to discharge the boiler fumes. Ducting
requires the use of ducts declared to be suitable
for the purpose by the manufacturer, following
the installation and user instructions, provided
by the manufacturer, and the requirements of
the standards.
1.14 FLUES, CHIMNEYS AND CHIMNEY
CAPS.
e ues, chimneys and chimney caps for the
evacuation of combustion products must be in
compliance with standards in force. e chimney
caps and the roof exhaust terminals must respect
the outlet quotas and the distance of the foreseen
technical volumes from the current technical
regulations.
Positioning the wall exhaust terminals. e
exhaust terminals must:
- be installed on external perimeter walls of the
building;
- be positioned according to the minimum
distances specified in current technical
standards.
Fume exhaust of forced draught appliances in
closed open-top environments. In spaces closed
on all sides with open tops (ventilation pits,
courtyards etc.), direct fume 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.
1.15 SYSTEM FILLING.
Once the boiler is connected, proceed with
system lling via the lling valve (Fig. 2-8).
Filling is performed at low speed to ensure release
of air bubbles in the water via the boiler and
heating system vents .
e boiler has a built-in automatic venting valve
on the circulator. Check if the cap is loose. Open
the radiator air vent valves.
Close vent valves only when water is delivered.
Close the lling valve when the boiler pressure
gauge indicates approx.1.2 bar.
N.B.: During these operations, turn on the
circulating pump at intervals by means of the
main selector switch on the control panel. Vent
the circulation pump by loosening the front cap
and keeping the motor running. Re-tighten the
cap aerwards.
1.16 GAS SYSTEM STARTUP.
To start up the system, refer to the current
regulations. This divides the systems and
therefore the start-up operations into three
categories: new systems, modied systems, re-
activated systems.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or naked ames;
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to specications.
1.17 BOILER STARTUP LIGHTING.
In order to issue the Declaration of Conformity
required by the laws in force, the following re-
quirements must be fullled to commission the
boiler (the operations listed below must only be
performed by a qualied rm and without any
unauthorised persons):
- check that the internal system is properly sealed
according to specications;
- ensure that the type of gas used corresponds to
boiler settings;
- switch on the boiler and ensure correct ignition
- make sure that the gas owrate and relevant
pressure values comply with those given in the
manual (Par. 3.17);
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the main circuit-breaker
selector upstream from the boiler and on the
unit;
- check that the concentric intake/exhaust
terminal (if tted) is not blocked.
e boiler must not be started up in the event of
failure to comply with any of the above.
N.B.: only upon completing commissioning by
an installer, may an authorised rm carry out an
initial inspection of the boiler, which is required to
activate the Immergas warranty. e test certicate
and warranty is issued to the user.

17
A
B
Zeus Superior 24 kW
1-27
C
A
B
Zeus Superior 28 kW
C
A
B
Zeus Superior 32 kW
C
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.18 CIRCULATION PUMP.
Zeus Superior kW Range boilers are supplied
with a built-in circulation pump with 3-position
electric speed control. e boiler does not operate
correctly with the circulation pump on first
speed. To ensure optimal boiler operation, in the
case of new systems (single pipe and module) it
is recommended to use the circulation pump at
maximum speed. e circulation pump is already
tted with a capacitor.
Pump anti-block. If, aer a prolonged period
of inactivity, the circulation pump is blocked,
unscrew the front cap and turn the motor sha
using a screwdriver. Take great care during this
operation to avoid damage to the motor.
1.19 DOMESTIC HOT WATER BOILER
DEVICE.
e Zeus Superior kW boiler is the accumulation
type with a capacity of 60 litres. It contains a large
coiled stainless steel heat exchanger pipe, which
allows to notably reduce hot water production
times. ese boilers built with stainless steel
casing and bottoms, guarantee long duration.
e assembly concepts and welding (T.I.G.) are
implemented to the minimum detail to ensure
maximum reliability.
e lower inspection ange ensures practical
control of the boiler and the coiled heat exchanger
and easy internal cleaning.
e domestic water attachments are found on the
ange cover (cold inlet and hot outlet) and also
the magnesium anode holder cap, including the
latter, supplied as standard for internal protection
of the boiler from possible corrosion.
N.B.: we suggest to do an annual check by a
qualied company (eg the Technical Assistance
Service), the eciency of the magnesium anode
of the storage tank. e boiler is prepared for
introduction of the domestic water re-circulation
connection.
Key:
A = Total head available to the plant on
the max. speed with by-pass excluded
(screws tightened totally)
B = Total head available to the plant on
the max. speed (screws tightened by
1.5 revs with respect to the completely
loose adjustment screws)
C = Total head available to the plant on
the max. speed with by-pass open
(screws loose)
Total head (kPa)
Total head (m H2O)
Total head (kPa)
Total head (m H2O)
Total head (kPa)
Total head (m H2O)
Total head available to the plant.
Capacity (l/h)
Capacity (l/h)
Capacity (l/h)

18
1- 28
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.20 KITS AVAILABLE ON REQUEST.
• Kit of system shuto valves (on request). e
boiler is designed for installation of system
shuto valves to be placed on delivery and
return pipes of the connection assembly. is
kit is particularly useful for maintenance as
it allows the boiler to be drained separately
without having to empty the entire system.
• System zone Kit (on request). If the heating
system is to be divided into several zones (max.
three), in order to interlock them with separate
adjustments and to keep water ow rate high
for each zone, Immergas supplies zone system
kits by request.
• Polyphosphate batching kit (on request). e
polyphosphate dispenser reducesthe formation
of lime-scale and preserves the original
heat exchange and domestic hot production
water conditions. e boiler is prepared for
application of the polyphosphate dispenser kit.
• Relay card (on request).e boiler is prepared
for installation of a relay card that allows
to extend the features of the appliance and
therefore functioning possibilities.
• Circulation kit (on request). e boiler cylinder
is prepared for the application of the circulation
kit.Immergas supplies a series of joints and
attachments that allow connection between
the boiler and the domestic water plant. e
indication of the attachment of the circulation
kit is also envisioned on the installation
template.
The above kits are supplied complete with
instructions for assembly and use.
Key:
1 - System ller tap
2 - Plant emptying cock
3 - V3-way valve (motorised)
4 - Gas valve
5 - Fumes pressure switch
6 - Boiler circulation pump
7 - Air bleeding vale
8 - Fumes ow measuring device
9 - Primary heat exchanger
10 - Fan
11 - Intake points (air A)
12 - System expansion vessel
13 - Domestic water probe
14 - Domestic water expansion vessel
15 - Stainless steel Boiler
16 - Safety valve 3 bar
17 - Safety valve 8 bar
18 - System emptying tap
1.21 BOILER COMPONENTS.
19 - Sealed chamber
20 - Fumes hood
21 - Safety thermostat
22 - Delivery probe
23 - Combustion chamber
24 - Ignition and detection plugs
25 - Burner
26 - Adjustable By-pass

19
2-1
INSTALLERUSER
MAINTENANCE TECHNICIAN
2USER AND MAINTENANCE INSTRUCTIONS
2.1 CLEANING AND MAINTENANCE.
Attention: to preserve the boiler’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 “an-
nual check and maintenance of the appliance”,
in compliance with national, regional, or local
standards in force. Annual maintenance is es-
sential to validate the conventional warranty of
Immergas. We recommend stipulating a yearly
cleaning and maintenance contract with an
authorised local rm.
2.2 GENERAL WARNINGS.
Never expose the wall-mounted boiler to direct
vapours from a cooking surface.
Use of the boiler by unskilled persons or children
is strictly prohibited.
Do not touch the fumes exhaust terminal (if
present) due to the high temperature it reaches;
For safety purposes, check that the concentric
air intake/flue exhaust terminal (if fitted), is
not blocked.
If temporary shutdown of the boiler is required,
proceed as follows:
a) drain the heating system if anti-freeze is not
used;
b) shut-o all electrical, water and gas supplies.
In the event of work or maintenance to structures
near ducting or ue extraction devices and their
accessories, switch o the appliance and on com-
pletion of the operations ensure an authorised
company veries the eciency of the ducting
or the devices.
Never clean the appliance or connected parts
with easily ammable substances.
Never leave containers or ammable substances
in the same environment as the appliance.
• Caution: : 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;
- if the cable is damaged, switch o the appliance
and solely contact an authorised company to
replace it;
- if the appliance is not to be used for a certain
period, disconnect the main power switch.
N.B.: the temperatures indicated by the display
have a tolerance of +/- 3°C due to environmental
conditions that cannot be attributed to the boiler.
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.
Key:
- Stand-by – On Button
A- Summer ( ) and winter ( ) functioning mode selector button
B- Domestic water priority button ( )
C- Reset (RESET) / exit menu(ESC) button
D- Menu entry (MENU)/ conrm data (OK) button
1 - Domestic hot water temperature selector switch
2 - Domestic hot water temperature set
3 - Heating water temperature selector switch
2.3 CONTROL PANEL.
4 - Heating water temperature set
5 - Anomaly presence
6 - Display boiler functioning state
8 - Flame presence symbol and relative power scale
9 and 7- Primary heat exchanger outlet water temperature
10 - Boiler in stand-by
11 - Boiler connected to remote control (Optional)
12 - Functioning in summer mode
13 - Anti-freeze function in progress
14 - Functioning in winter mode
15 - Priority domestic water functioning
16 - Connection to external tools for technician
17 - Display of menu items
18 - Functioning with external temperature probe active
19 - Display of data conrmation or menu access
20 and 7 - Display of external temperature with external probe connected
(optional)
21 - Display of reset request or exit menu
22 - Chimney sweep function in progress
23 - Boiler manometer
24 - Multi-function Display

20
2-2
2-3
2-4
2-5
INSTALLERUSER
MAINTENANCE TECHNICIAN
2.4 DESCRIPTION OF FUNCTIONING
STATES.
Below is a list of the various boiler functioning
states that appear on the multi-function display
Display (6) Description of functioning state
SUMMER
Summer functioning mode
Without requests in progress.
Boiler in stand-by for domestic hot water request.
WINTER
Winter functioning mode
Without requests in progress.
Boiler in stand-by for domestic hot water or environmental heating request.
DHW ON Domestic water mode in progress.
Boiler functioning, domestic water heating is in progress.
CH ON Heating mode in progress.
Boiler functioning, environmental heating is in progress.
F3
Anti-freeze mode in progress.
Boiler in function to restore the minimum safety
Temperature against freezing of the boiler.
CAR OFF Remote control (Optional) o.
DHW OFF
With domestic water priority disabled (indicator 15 o) the boiler only fun-
ctions in environmental heating mode for the duration of 1 hour, maintaining
the domestic hot water at a minimum temperature (20°C), aer which the
boiler goes back to normal functioning, which was previously set.
If used with Super CAR in concomitance of the functioning period in reduced
domestic water Timer mode, DHW OFF will appear on the screen and indica-
tors 15 and 2 switch o (see Super CAR instructions book).
F4
Postventilation in progress.
Fan working aer a request for domestic hot water or environmental heating in
order to evacuate residual fumes.
F5
Postcirculation in progress.
Circulator pump in working aer a request for domestic hot water or envi-
ronmental heating in order to cool the primary circuit.
P33
With Remote Control (Optional) or environmental thermostat (TA) (Optional)
in block, the boiler functions all the same in heating mode.
(Can be activated using the “Customisation” menu Allows to activate the
heating also if the Remote Control or TA are out of order).
STOP Reset attempts ended.Wait one hour to re-acquire attempt 1.(See ignition
block).
ERR xx Anomaly present with relative error code.
e boiler does not function. (see troubleshooting paragraph).
SET During rotation of the domestic hot water temperature selector switch
(1 Fig. 2-1) it displays the regulation state of the domestic water in progress.
SET During rotation of the heating temperature selector switch (3 Fig. 2-1) it
displays the regulation state of the boiler delivery for environmental heating.
SET
In presence of the external probe (optional) replaces “SET HEAT”.
e value that appears is the correction of the delivery temperature with
respect to the functioning curve set from the external probe.
(24) by means of the indicator (6) with a brief
description. Refer to the instruction book for a
complete explanation.
2.5 USING THE BOILER.
Before ignition check that the plant is full of
water, controlling that the manometer needle
(23) indicates a value between1÷1.2 bar.
Open the gas cock upstream from the boiler.
With the boiler switched-o only the Stand-by
symbol (10) appears on the display. By pressing
the “ ” button, the boiler switches on.
Once the boiler is on, by pressing button “A”
repeatedly the functioning mode is changed
and alternatively passes from the summer
functioning mode ( ) and winter functioning
mode ( ).
• Summer ( ): in this functioning mode the
boiler only functions to heat the domestic
water, the temperature is set using a selector
switch (1) and the relative temperature is shown
on the display (24) by means of the indicator
(2) and “SET” appears (Fig. 2-2). By turning
the selector switch (1) in a clockwise direction
the temperature increases and in a clockwise
direction it decreases.
During heating of the domestic hot water
(24) “DHW ON” will appear on the display
(Fig. 2-3) on the status indicator(6) and at the
same time on ignition of the burnere ame
presence indicator (8) switches on with relative
power scale and the indicator (9 and 7) with
the instantaneous output temperature from
the primary heat exchanger.
• Winter ( ): in this mode the boiler
functions both for heating domestic water
and environmental heating. e temperature
of the domestic hot water is always regulated
using the selector switch (1), the heating
temperature is regulated using elector switch
(3) and the relative temperature is shown on
the display (24) by means of the indicator (4)
and the“SET” indication appears (Fig. 2-4). By
turning the selector switch (3) in a clockwise
direction the temperature increases and in an
anti-clockwise direction it decreases.
During the request for environmental heating (24)
“CH ON” will appear on the display(Fig. 2-5) on
the status indicator (6) and at the same time on
ignition of the burner the ame presence indicator
(8) switches on with relative power scale and the
indicator (9 and 7) with the instantaneous output
temperature from the primary heat exchanger. In
the heating phase the boiler,if the temperature of
the water contained in the plant is sucient to heat
the radiators, can only function with the activation
of the boiler circulation pump.
Summer functioning mode with domestic
hot water heating
Domestic hot water regulation
System delivery temperature regulation
Winter functioning mode with environmental hea