Immergas Maior Eolo 24 4E Product manual

EOLO STAR
24 4E
IE
Instructions and warnings
Installer
User
Maintenance technician
*1.040314ENG*
*1.040314ENG*

2

3
CONTENTS
Dear Customer,................................................................................. 4
General warnings ............................................................................. 4
Safety symbols used.......................................................................... 5
Personal protective equipment....................................................... 5
1 Boiler installation................................................................. 6
1.1 Installation recommendations. .......................................... 6
1.2 Main dimensions. ................................................................ 9
1.3 Minimum installation distances........................................ 9
1.4 Boiler connection group (Optional). .............................. 10
1.5 Gas connection. ................................................................. 11
1.6 Hydraulic connection........................................................ 12
1.7 Electrical connection......................................................... 12
1.8 Remote controls and room chrono-thermostats
(Optional). .......................................................................... 13
1.9 Immergas ue systems. ..................................................... 14
1.10 Tables of resistance factors and equivalent
lengths of “blue Range” ue system components......... 17
1.11 Concentric horizontal kit installation............................. 18
1.12 Concentric vertical Kit installation................................. 19
1.13 Separator kit installation................................................... 20
1.14 Ducting of ues or technical slots. .................................. 24
1.15 Conguration for C6 ue installation............................. 24
1.16 Conguration type B, open chamber
and fan assisted for indoors.............................................. 25
1.17 Flue exhaust to ue/chimney............................................ 25
1.18 Flues, chimneys and chimney caps. ................................ 25
1.19 System lling. ..................................................................... 25
1.20 Gas system start-up ........................................................... 25
1.21 Boiler start up (ignition)................................................... 25
1.22 Circulation pump............................................................... 26
1.23 Kits available on request. .................................................. 26
1.24 Boiler components............................................................. 27
2 Instructions for use and maintenance............................. 28
2.1 General warnings............................................................... 28
2.2 Cleaning and maintenance............................................... 30
2.3 Control panel...................................................................... 30
2.4 Ignition of the boiler.......................................................... 31
2.5 Fault and anomaly signals. ............................................... 32
2.6 Information Menu. ............................................................ 34
2.7 Resetting the anomaly history.......................................... 34
2.8 Boiler shutdown................................................................. 35
2.9 Restore central heating system pressure......................... 35
2.10 Draining the system. ......................................................... 35
2.11 Draining the domestic hot water circuit......................... 35
2.12 Cleaning the case. .............................................................. 35
2.13 Decommissioning.............................................................. 35
3 Instructions for maintenance and initial check............. 36
3.1 General warnings............................................................... 36
3.2 Initial check. ....................................................................... 36
3.3 Yearly appliance check and maintenance. ...................... 37
3.4 Boiler Hydraulic diagram................................................. 38
3.5 Wiring diagram.................................................................. 39
3.6 Possible problems and their causes. ................................ 40
3.7 Converting the boiler to other types of gas.................... 41
3.8 Gas valve calibration. ........................................................ 42
3.9 Programming the P.C.B. ................................................... 43
3.10 Solar panels coupling function. ....................................... 45
3.11 Automatic slow ignition function with timed ramp
delivery. ............................................................................... 45
3.12 "Chimney sweep” function............................................... 45
3.13 Pump anti-block function. ............................................... 45
3.14 Domestic hot water circuit anti-extruder function....... 45
3.15 P.C.B. periodical self-check. ............................................. 45
3.16 Heating timer ..................................................................... 45
3.17 ree-way anti-block system............................................ 45
3.18 Casing removal................................................................... 46
4 Technical data..................................................................... 47
4.1 Variable heat output. ......................................................... 47
4.2 Combustion parameters. .................................................. 47
4.3 Technical data..................................................................... 48
4.4 Key for Data nameplate..................................................... 49

4
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its tech-
nicalandcommercial documentswithoutforewarning.
Dear Customer,
Congratulations forhavingchosen a top-quality Immergasproduct, able to assure well-being and safety for a long period of time. As an Im-
mergas customer you can also count on a Qualied Technical Assistance Centre, prepared and updated to guarantee constant eciency of
yourappliance.Readthefollowing pages carefully: youwillbeable to drawuseful tips on the proper useofthedevice, compliancewith which
willconrmyoursatisfaction withtheImmergas product.
Forany assistance and scheduled maintenanceplease contact Authorised Aer-Sales centres: theyhaveoriginal spareparts and are speci-
cally trained bythemanufacturer.
GENERAL WARNINGS
is book contains important information for the:
Installer (section 1);
User (section 2);
Maintenance Technician (section 3).
• e user must carefully read the instructions in the specic section (section 2).
• e user must limit operations on the appliance only to those explicitly allowed in the specic section.
• Every operation carried out on the heat pump (e.g. set up, inspection, installation and commissioning), must mandatorily be
performed by authorised personnel alone and in possession of a technical engineering or professional degree qualifying them to
perform these tasks. ey must also have attended a refresher course acknowledged by competent authorities. is particularly
applies to personal specialised in C.H. and air-conditioning systems and qualied electricians who, due to their specialised trai-
ning, skills and experience are experts in the correct installation and maintenance of C.H., cooling and air-conditioning systems.
• e appliance must be installed by qualied and professionally trained personnel.
• e instruction booklet is an integral and essential part of the product and must be given to the new user in the case of transfer
or succession of ownership.
• It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation,
use and maintenance stages.
• 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, intended as sta with specic technical skills in the system
sector, as envisioned by the Law.
• Improper installation or assembly of the Immergas appliance and/or components, accessories, kits and devices can cause unexpected
problems for people, animals and objects. Read the instructions provided with the product carefully to ensure proper installation.
• is instructions manual provides technical information for installing Immergas products. As for the other issues related to the
installation of products (e.g. safety at the workplace, environmental protection, accident prevention), it is necessary to comply
with the provisions of the standards in force and the principles of good practice.
• All Immergas products are protected with suitable transport packaging.
• e material must be stored in a dry place protected from the weather.
• Damaged products must not be installed.
• Maintenance must be carried out by skilled technical sta that represents a guarantee of qualications and professionalism.
• e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper
and therefore potentially dangerous.
• If errors occur during installation, operation and maintenance, due to non-compliance with technical laws in force, standards or
instructions contained in this book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual
and extra-contractual liability for any damage and the appliance warranty is invalidated.
• 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.
Product not intended for EU countries

5
SAFETY SYMBOLS USED.
GENERIC HAZARD
Strictly follow all of the indications next to the pictogram. Failure to follow the indications can generate hazard situa-
tions resulting in possible harm to the health of the operator and user in general.
ELECTRICAL HAZARD
Strictly follow all of the indications next to the pictogram. e symbol indicates the appliance’s electrical components
or, in this manual, identies actions that can cause an electrical hazard.
MOVING PARTS
e symbol indicates the appliance’s moving components that can cause hazards.
HOT SURFACES
e symbol indicates the appliance’s very hot components that can cause burns.
SHARP SURFACES
e symbol indicates the appliance’s components or parts that can cause cuts if touched.
EARTH TERMINAL CONNECTION
e symbol identies the appliance’s earth terminal connection point.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the appliance’s instructions before performing any operation, carefully following the indications
provided.
INFORMATION
Indicates useful tips or additional information.
SAFETY GLOVES
PERSONAL PROTECTIVE EQUIPMENT.
SAFETY GOGGLES
SAFETY FOOTWEAR
e user must not dispose of the appliance at the end of its service life as municipal waste, but send it to appro-
priate collection centres.

1
OK
6
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
1BOILER INSTALLATION.
1.1 INSTALLATION RECOMMENDATIONS.
ATTENTION:
operators who install and service the
appliance must wear the personal
protective equipment required by ap-
plicable law.
is boiler has been designed for wall-mounted in-
stallation only; for central heating and production
of domestic hot water for domestic use and similar
purposes.
e place of installation of the appliance and relative
Immergas accessories must have suitable features
(technical and structural), such as to allow for (always in safe,
ecient and comfortable conditions):
- installation (according to the provisions of technical legisla-
tion and technical regulations);
- maintenance operations (including scheduled, periodic,
routine and special maintenance);
- removal (outdoors in the place for loading and transporting
the appliances and components) as well as their eventual
replacement with appliances and/or equivalent components.
e wall surface must be smooth, without any protrusions or
recesses enabling access to the rear part. ey are not designed
to be installed on plinths or oors (Fig. 1).
By varying the type of installation the classication of the boiler
also varies, precisely:
- Type B22 boiler: if installed using the relevant terminal for air
intake directly from the room in which the boiler has been
installed.
- Type C boiler: if installed using concentric pipes or other
types of pipes envisioned for the sealed chamber boiler for
intake of air and expulsion of ue gas.
Only professionally qualied companies are authorised to
install Immergas gas appliances.
Installation must be carried out according to regulation stand-
ards, current legislation and in compliance with local technical
regulations and the required technical procedures.
ATTENTION:
It is not permitted to install boilers that
are removed and decommissioned from
other systems. e manufacturer declines all
liability for damage caused by boilers removed
from other systems or for any non-conformi-
ties of such equipment.
ATTENTION:
check the environmental operating
conditions of all parts relevant to in-
stallation, referring to the values shown in the
technical data table in this booklet.
ATTENTION:
Installation of the boiler when powered
by LPG must comply with the rules re-
garding gases with a greater density than air
(remember, as an example, that it is prohibited
to install plants powered with the above-men-
tioned gas in rooms where the oor is at a
lower quota than the country level).
ATTENTION:
if installing a kit or servicing the ap-
pliance, always empty the system’s
domestic hot water circuit rst so as not to
compromise the appliance’s electrical safety
(Par. 2.10 and 2.11).

7
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
Before installing the appliance, ensure it has been
delivered in perfect condition; if in doubt, contact
the supplier immediately. Packing materials (staples,
nails, plastic bags, polystyrene foam, etc.) constitute a
hazard and must be kept out of the reach of children.
If the appliance is installed inside or between cabinets, ensure
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
ue removal connections (Fig. 3).
It is just as important that the intake grids and exhaust
terminals are not obstructed.
It is recommended to check that no ue gas recirculation
is found in the air sample points (0.5% maximum per-
mitted CO2).
Keep all ammable objects away from the appliance (paper,
rags, plastic, polystyrene, etc.).
e minimum distance for exhaust pipes from ammable
materials must be at least 25 cm.
Do not place household appliances underneath the boiler as
they could be damaged if the safety valve intervenes (if not
conveyed away by a draining funnel), or if there are leaks from
the hydraulic connections; otherwise, the manufacturer cannot
be held responsible for any damage caused to the household
appliances.
For the aforementioned reasons, we recommend not placing
furnishings, furniture, etc. under the boiler.
In the event of malfunctions, faults or incorrect operation, turn
the appliance o immediately and contact an authorised com-
pany (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.
Any modication to the appliance that is not explicitly indicated
in this section of the booklet is forbidden.
- Installation on the vertical projection
of cooking hobs is forbidden.
- Installation is also prohibited in plac-
es/environments that constitute common
parts of oce condominiums such as stairs,
cellars, entrance halls, attics, los, escape
routes, etc. if they are not located inside
technical compartments under the respon-
sibility of each individual building and only
accessible to the user (for the features of the
technical compartments, see the technical
standards in force).
- ese boilers are not suitable for installation
on walls made of combustible material.
Installation Standards:
- this boiler must not be installed outdoors,
even in a partially protected area. A partially
protected area is one in which the boiler is
not exposed to the direct action of the weath-
er (rain, snow, hail, etc.).
- Installation of gas appliances, ue exhaust
pipes and combustion air intake pipes is for-
bidden in places with a re risk (for example:
garages, closed parking stalls), and in poten-
tially dangerous places.
N.B.: installing the wall recessed frame kit must guar-
antee the boiler stable, ecient support. e recessed
frame kit ensures appropriate support only if installed
correctly (according to the rules of good practice),
following the instructions on its instructions leaet.
e recessed frame for the boiler is not a supporting
structure and must not replace the wall removed. It is necessary
to position the boiler inside the wall. For safety reasons against
any leaks it is necessary to plaster the boiler housing in the brick
wall.

8
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
N.B.: wall mounting of the boiler must guarantee
stable and ecient support for the boiler. e
plugs (standard supply) are only to be used to x
the boiler 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 of hollow bricks or
blocks, partitions with limited static properties, or in any case
walls other than those indicated, a static test must be carried
out on the mounting system.
ese boilers are used to heat water to below boiling
temperature in atmospheric pressure.
ey must be connected to a central heating system
and domestic hot water circuit suited to their perfor-
mance and capacity.
Risk of damage due to corrosion caused by unsuitable
combustion air and environment.
Spray, solvents, chlorine-based detergents, paints, glue,
ammonium compounds, powders and similar cause
product and ue duct corrosion.
- Check that combustion air power supply is free from
chlorine, sulphur, powders, etc.
- Make sure that no chemical substances are stored in the place
of installation.
- If you want to install the product in beauty salons, paint
workshops, carpenter’s shop, cleaning companies or
similar, choose a separate installation area that ensures
combustion air supply that is free from chemical substances.
- Make sure the combustion air is not fed from chimneys that
were used with gas boilers or other heating devices. In fact, these
may cause an accumulation of soot in the chimney.
ATTENTION:
- Type B open chamber boilers must
not be installed in places where com-
mercial, artisan or industrial activities take
place, which use products that may develop
volatile vapours or substances (e.g. acid
vapours, glues, paints, solvents, combusti-
bles, etc.), as well as dusts (e.g. dust deri-
ving from the working of wood, coal nes,
cement, etc.), which may be harmful for the
components of the appliance and jeopardise
operation.
- in B22 B22p and B32 configuration, unless
otherwise provided for by local regulations
in force: the boilers must not be installed
in bedrooms, bathrooms or bedsits. ey
must neither be installed in rooms contai-
ning solid fuel heat generators nor in rooms
communicating with said rooms.
- e installation rooms must be permanently
ventilated, in compliance with the local re-
gulations in force (at least 6 cm2for every kW
of installed heat input, except in the event of
any increases needed for electro-mechanical
vacuum cleaners or other devices that could
put the installation room under vacuum).
- e installation of appliances in B22 B22p and
B32 conguration is only recommended in
places that are not lived in and which are
permanently ventilated.
ATTENTION:
Failure to comply with the above implies
personal responsibility and invalidates
the warranty.

2
3
9
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
1.2 MAIN DIMENSIONS.
Key:
A - 450 mm
B - 350 mm
C - 30 mm
D - 30 mm
E - 350 mm
1.3 MINIMUM INSTALLATION DISTANCES.
Key:
G - Gas supply
AC - Domestic hot water outlet
ACV - Solar valve kit DHW inlet (Optional)
AF - Domestic cold water inlet
R - System return
M - System ow
V - Electrical connection
VS - Safety valve drain
PLEASE NOTE: connection group (optional)
Height (mm) Width (mm) Depth (mm)
756 440 240
CONNECTIONS
GAS DOMESTIC
HOT WATER SYSTEM
GAC AF R M
3/4” 1/2” 1/2” 3/4” 3/4”

V
AC
GAF 1R2M
3
4
10
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
1.4 BOILER CONNECTION GROUP OPTIONAL.
e connection unit consisting of all the necessary parts to
perform the hydraulic and gas system connections of the appli-
ance comes as optional kit, perform the connections based on
the type of installation to be made and according to the layout
shown in Fig 4.
Key:
V - Electric connection
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic hot water inlet
M - System ow
R - System return
1 - System lling cock
2 - System draining valve
3 - 3-bar safety valve drain tting