Hermann EURA 23 E User manual

Quick guide
Technical Data
Installation, adjusting
and maintenance instructions
User instructions
GAS BOILERS
EURA
23 E – 28 E
23 SE – 28 SE – 32 SE

2
for the technician and for the user
Warnings
ATTENTION
(for EURA 23/28/32 SE)
FOR DIAPHRAGM POSITIONING, CAREFULLY READ THE FLUE SYSTEMS
INSTRUCTIONS IN THE “INSTALLATION” CHAPTER.
IMPORTANT
THE FIRST IGNITION OF THE BOILER MUST BE EXECUTED BY AN
AUTHORIZED TECHNICIAN ACCORDING TO THE LAW 46/90.
Assigning all the operations for the first ignition to a Hermann Authorized Service
Center the particular and exclusive Hermann Conventional Warranty is activated.
For further information consult the coupon which you can find in the boiler’s
documents envelope.
Assigning all the operations for the first ignition to a Hermann Authorized Service Center the particular and exclusive Hermann Conven-
tional Warranty is activated. For further information consult the coupon which you can find in the boiler’s documents envelope.
DANGER: All warnings preceded by this symbol MUST be carefully respected so as
to avoid any accident of mechanical (e.g. wounds or contusions) or general origin.
DANGER: All warnings preceded by this symbol MUST be carefully respected so as
to avoid any accident of ELECTRICAL origin (fulguration).
DANGER: All warnings preceded by this symbol MUST be carefully respected so as
to avoid any accident of THERMIC origin (scalds).
Attention: All warnings preceded by this symbol MUST be carefully respected so as to avoid
any disfunctioning and/or damage to the appliance or other objects.
MANUFACTURER DECLARATION
Hermann boilers have obtained the CE certification (DM dtd. April 2nd 1998, Law 10/91, art. 32) and
meet minimum efficiency requirements, both at normal and 30% load, provided by DPR 412/93
(according to Law 10/91,art. 4, sub-section 4).They are in conformity with following Directives: Directive
on appliances burning gaseous fuels (90/396), Directive on electro-magnetic compatibility (CE 89/
336), Efficiency Directive (CE 92/42), Low Voltage Directive (CE 73/23), and relevant modifications.
WARNING

3
for the technician and for the user
Warnings
The instructions manual is an essential and complementary part of the product and it is
supplied together with the boiler.
Carefully read the manual, achieving all important information for a safe installation,
use and servicing.
— Carefully keep the manual for any further consultation you may need.
— The installation must be carried out by a qualified technician, in accordance with
manufacturer instructions and with the relevant requirements of the current issue.
— A qualified technician is a person with a specific technical competence in the field of the
heating appliances for domestic use and domestic hot water production, as indicated
by the Law [ID of Your National rule, if any, regarding Technicians competence].
— Operation that User can perform are limited to those described in“USER INSTRUCTIONS”
section.
— The manufacturer has no contractual and extra-contractual responsibility for any damage
arising from wrong installation, wrong use and non-observance of current laws and
instructions given by the manufacturer himself.
— Important: this gas boiler is used to heat the water at a temperature lower than the boiling one,
at atmospheric pressure; it must be connected to an heating system and/or to a domestic hot
water system, in accordance with its features and power.
— Packing items (cartons, nails, plastic bags and so on) must not be left within children
easy reach, as they are potentially dangerous.
— Before any cleaning or servicing operation, switch off the main electrical switch of the
heating system and/or any other suitable switch providing electrical disconnection of
the gas boiler.
— In case of fault and/or bad operation of the appliance, disconnect it immediately and do
not try to repair it by yourselves.
Boiler servicing and repair must be carried out exclusively by [HERMANN Authorized Servicing
Centres] [qualified technicians], which will use original spare parts. Strictly observe the above
requirement, avoiding any risk of compromising the appliance safety.
— If the appliance should be definitively disconnected, remove or cut off any potential dangerous
item.
— When selling the appliance or leaving it installed after a removal, make always sure that the
instructions manual is close to the boiler for the future use of new owners and/or installers.
— This appliance must be used for its clearly recommended utilization only. Any other utilization
must be considered dangerous and incorrect.
— It is strictly forbidden to use the appliance for different purposes than the specified ones.
— This appliance must be installed exclusively to wall.

4
sections for the usersections for the technician
Index
Warning .........................................2
Technical data...............................5
Installation ....................................8
Safety laws and rules referred to
technicians assigned to boilers
installation ....................................... 8
Reference norms and laws
for installation .................................. 8
Boiler location ....................................... 9
Fixing the boiler .................................. 10
Dima di fissaggio ................................ 10
Hydraulic connections ........................ 11
System filling ...................................... 12
Gas connection .................................. 13
Electrical connections ......................... 13
Chimney connections
EURA E (natural draught) .............. 15
Chimney connections
EURA SE (forced draught) ............ 16
High capacity fan
EURA 23 SE.................................. 18
Flue options
EURA SE ...................................... 19
First firing,
regulation and
servicing instructions ................21
Gaining access to
manual regulation devices ............. 21
Preliminary gas control ....................... 21
MAX-MIN pressure adjustment
on GAS valve ................................ 22
Regulation programming .................... 23
Slow opening regulation ..................... 25
Max heating power
regulation....................................... 25
Gas transformation ............................. 28
Combustion check .............................. 29
Excluding automatic by-pass .............. 29
Draining EURA boiler ......................... 30
Other boiler programme...................... 31
Crypt Warnings for Technical experts . 33
Servicing warnings ............................. 35
Boiler internal components ................. 36
Electrical diagram ......................39
User instructions ........................41
Warnings for boiler
commissioning............................... 41
Useful tips........................................... 41
Warnings ............................................ 42
Gaining access to control panel.......... 43
Switching on/off
and running boiler .......................... 43
Control panel details ........................... 45
Boiler blocking and alarm codes ......... 47
Eventual problems .............................. 50
Warning while using ........................... 51
INDEX

5
for the technician
Technical data
TECHNICAL DATA
ATADLACINHCET.M.UE32ARUEE82ARUEES32ARUEES82ARUEES23ARUE
noitacifitrecEC°n9892LB49609892LB49609892LB49609892LB49609892LB4960
ssalC
II +3H2 II +3H2 II +3H2 II +3H2 II +3H2
epyT SB/11B 28C-26C-25C-24C-23C-21C-22B
epytsaG02G /03G
13G 02G /03G 13G 02G /03G 13G 02G /03G 13G 02G /03G 13G
)iH(tupnitaehxaMWk6.526.520.130.136.526.520.130.135.43
1.43
)iH(tupnitaehniMWk5.015.012.312.315.015.012.312.315.31
5.31
)iH(tuptuotaehxaMWk1.321.320.820.827.327.325.825.827.13
3.13
)iH(tuptuotaehniMWk30.930.94.114.1170.970.92.112.114.11
4.11
ON
x
ssalC 31313
2
323
2
ONdethgieW
x
hWk/gm321532141802731
851
531161421
681
tupnilanimontaOCmpp0.040.070.530.260.63
0.84
0.520.820.84
0.93
OC
2
tupnilanimonta %8.48.51.50.67.6
0.8
8.64.73.6
2.7
YCNEICIFFE
ycneiciffelanimoN%8.097.092.393.298.19
daol%03taycneiciffE%1.880.984.090.099.88
GNITAEH
)xam÷nim(egnarnoitceleserutarepmeT C°08÷0308÷0308÷0308÷0308÷03
lessevnoisnapxE l88888
erusserplessevnoisnapxErab11111
erusserpgnikrowxaMrab33333
erutarepmetmetsysxaMC°5858585858
RETAWTOH
esirerutarepmetC°03taetarwolFnim/l0.110.113.313.313.11
3.11
6.316.311.51
0.51
wolfretawniMnim/l5.25.25.25.25.2
erusserpylppusxaMrab66666
ehtfonoitavitcaehtrof(erusserpylppusniM
)hctiwsytiroirp rab4.04.04.04.04.0
)xam÷nim(egnarnoitceleserutarepmeT C°55÷0355÷0355÷0355÷0355÷03
)retawtoh/gnitaeh(yticapacknatiniMl9.0/2.39.0/2.39.0/2.39.0/2.39.0/2.3
ATADLACIRTCELE
ycneuqerf/egatloVzH/V05/03205/03205/03205/03205/032
noitpmusnocrewoP
)nafyticapachgihhtiw=PAV( W001031)PAV061(051071581
noitcetorpfoleveLD4XPID4XPID4XPID4XPID4XPI
SNOISNEMID
htdiW htpeD-thgieH- mm margaid"SNOISNEMID"otrefeR
thgieW gk5.1424648494
)teltuO=S(SNOITCENNOC
nruter/wolfgnitaeHcnI"¾"¾"¾"¾"¾
teltuo/telniretaWcitsemoDcnI"½"½"½"½"½
reliobehtotnoitcennocsaGcnI"¾"¾"¾"¾"¾
kcocsagehtotnoitcennocsaG
tiknoitcennocdradnatsfo cnI"½"½"½"½"½
ØteltuostcudorpeulFmm031041
Øtelniria/teltuostcudorpeulflaixaoCmm 06/00106/00106/001
xam/nim)latnoziroh(htgneleulflaixaoCm 4÷5,03÷5,03÷5,0
xam/nim)lacitrev(htgneleulflaixaoCm 5÷14÷14÷1
Øtelniria/teltuostcudorpeulfetarapeSmm080808
xam/nimhtgneleulfetarapeSm 03÷2
)02=Sxam(
52÷2
)02=Sxam(
02÷2
)21=Sxam(
xam/nimhtgneleulfetarapeS
htiw nafyticapachgih m06÷13
)04=Sxam(
xam/nimhtgneleulfetarapeS
rettilpsepiphtiw m41÷2
)31=Sxam(
01÷2
)7=Sxam(
ERUSSERPYLPPUSSAG
epytsaG 02G /03G
13G 02G /03G 13G 02G /03G 13G 02G /03G 13G 02G /03G 13G
erusserplanimoNrabm0273/920273/920273/920273/920273/92
retemaidsrotcejnI Ø
mm001/1 02157/5702157/5702157/5702157/5703177/77
NOITPMUSNOCSAG
xamQ
h/cm17.2 82.3 17.2 82.3 56.3
h/gk /20.2
89.1
/44.2
04.2
/20.2
89.1
/44.2
04.2
/86.2
46.2
nimQ
h/cm11.1 04.1 11.1 04.1 34.1
h/gk /38.0
18.0
/40.1
20.1
/38.0
18.0
/40.1
20.1
/60.1
50.1

6
for the technician
Technical data
L P
H
YX Q
ledomrelioB L
)mm(
H
)mm(
P
)mm(
X
)mm(
Y
)mm(
Q
)mm(
R
)mm(
S
)mm(
T
)mm(
E32ARUE054338773702342522
E82ARUE054338773232812522
ES32ARUE05433877370234219167257573
ES82ARUE054338773752391191672421623
ES23ARUE054338773752391191672421623
DIMENSIONS
EURA 23-28-32 SE
models only:
EURA - AVAILABLE PUMP CAPACITY
1–EURA 28 available pump capacity (closed By-pass)
2–EURA 28 available pump capacity (automatic By-pass)
3–EURA 23 available pump capacity (closed By-pass)
4–EURA 23 available pump capacity (automatic By-pass)
5–EURA 32 available pump capacity (closed By-pass)
6–EURA 32 available pump capacity (automatic By-pass)
EURA
E - SE
1teltuostcudorpeulF
2metsyslaixaocroftelniriA
3metsysetarapesroftelniriA
Water flow l/h
Pressure m. H2O
X Y
Q
R
S T
1
2
3

7
for the technician
Technical data
10
9
22
23
21
20
19
17
18
16
15
14
11
12
13
2
1
7
4
3
5
6
8
9
8
7
6
5
3
2
1
10
13
14
15
16
20
17
18
19
21
22
23
11
12
4
DOMESTIC
WATER
GAS
INLET
HEATING
FLOW
OUTLET
RETURN
DOMESTIC
WATER
GAS
INLET
HEATING
FLOW
OUTLET
RETURN
1 Drain valve
2 Manometer
3 By-pass
4 Three way motorised valve
5 Loss of water switch
6 Heating system safety valve 3 bar
7 Pump
8 Expansion vessel
9 Flow temperature sensor
10 High temperature safety switch
11 Automatic air vent
12 Flue hood (“E” and “SE” models)
13 Flue thermostat (“E” models)
Flue pressure switch (“SE” models)
14 Combustion chamber (“E” models)
Fan (“SE” models)
15 Primary heat exchanger
16 Burner
17 Domestic minitank temperature sensor
18 Domestic minitank automatic air vent
19 Domestic heat exchanger
20 Gas valve
21 Motorised mixing valve
22 Priority flowstat
23 Electric filling valve
EURA E
EURA SE
BOILER SCHEMATIC
WARNING:This scheme is made for in-
formation only. To make boiler hydrau-
lic connection either use fixing jig or the
drawing inserted in the section “Instal-
lation”.

8
for the technician
Installation instructions
INSTALLATION
Safety laws and rules referred to technicians
assigned to boilers installation
Place here all necessary
advices according to national rules
about WORK SAFETY
Exemple:
Law number XXXX
“Actuation of 89/391/CEE; 89/655/CEE, 90/296/CEE, 90/934/CEE, 90/679/CEE, (work safety)”
Law number XXXX
“Actuation of 89/686/CEE (21 Dec 1989)”
Other Law number XXXX (if any)
“Other Law title and/or brief description”
Directives
“Directive title and/or brief description”
Always proceed with caution when handling the boiler and carrying out
installation/maintenance work as metal parts may cause injuries such as cuts
and abrasions.Wear gloves while doing the above mentioned operations.
Reference norms and laws
for installation
Place here all necessary
advices according to national rules
about BOILER INSTALLATION
Exemple:
Law number XXXX
“Law title and/or brief description”

9
for the technician
Installation instructions
Boiler location
INSTALLATION ROOM
When having an heat ouput lower than 35 kw (about 30000 Kcal/h), particular features for the
installation room are not required. Shortly, all installation rules assuring a safe and regular gas
boiler operation, must be strictly respected.
Place here all necessary
advices according to national rules about:
- Installation room requirements
- Limitations in power and/or number of boilers and other
appliances in the same room
Exemple:
Law number XXXX
“Law title and/or brief description”
INSTALLATION IN ROOMS WHERE TEMPERATURE CAN DROP DOWN TO 0°C:
When the installation place does not guarantee an adequate repair against atmospheric agents,
the gas boiler must be completely protected through an adequate coverage as a safety measure
against the above agents.
In case of boiler installation in rooms where temperature can drop down to 0°, it is advisable to
protect the heating circuit with an antifreeze liquid. See the “System Filling” section.
This appliance is not suitable for outdoor installation.
ROOM VENTILATION (EURA E - natural draught)
When a natural draught boiler is installed, permanent ventilation of the installation
room is mandatory and extremely important. Ventilation must be made and sized in
accordance with Laws and Rules in force.

10
for the technician
Installation instructions
Fixing the boiler
For the installation proceed as follows:
Appliance size and clearances for maintenance: 50mm from both sides and 300mm from the
bottom are reccommended.
— Attach template to the wall (see figure below) with two brackets suitable to carry boiler weight;
— fix up electrical connections and all ducts for heating flow and return, cold water, hot water and
gas, as indicated on template;
— remove template and hang boiler;
Remark: The template is only used as a guide to align the pipework.
—remove plastic caps and their relevant gaskets from boiler connections. Remove bottom
plastic supports by unscrewing their relevant screws. Keep these screws since you will need
them to install bottom grid;
Remark: We suggest not to fix grid until the boiler is definitively commissioned.
— Connect boiler to the pipework installing a cold
water inlet cock. We also suggest to install
cocks on heating flow and return.
Boiler template
Gas (1/2")
Hot water OUTLET (1/2")
Cold water INLET (1/2")
Heating FLOW (3/4")
Heating RETURN (3/4")
Electrical power supply
Room thermostat

11
for the technician
Installation instructions
Hydraulic connections
Remark: If gas cock position is foreseen near the
WALL, install first gas cock, then water inlet
tap.
Advices and suggestions to avoid vibrations and
noises in the system
— Do not use pipes with reduced diameters;
— Do not use bends with small radius and
reductions of important sections;
—
It is recommended an hot washing of the
system in order to purge the pipes and the
radiators from impurities (in particular oils and
fats) that could damage the pump.
DOMESTIC WATER SUPPLY
The pressure of entrance cold water inlet pressure must be lower than 6 bar. Furthermore, for an
optimal boiler functioning, water pressure should be more than 1 bar. A lower pressure could make
difficult to restore correctly the pressure in the heating system, and reduce the flow od hot water
available from the boiler.
If pressure is higher, a PRESSURE REDUCER must be fitted upstream the boiler.
The cleaning frequency of the coil exchanger depends on the water supply hardness. Besides, the
presence of solid residuals or impurities in the water (for example in case of new systems) could
compromise the correct functioning of the boiler.
So, may be necessary to install suitable water treatment device, depending on the water features.
HEATING SYSTEM
— Considering that during boiler operation, the water inside the heating system increases its
pressure, make sure that its maximum value does not exceed the maximum hydraulic pressure
indicated on the appliance data plate.
— Connect the safety evacuation ducts of the boiler to an evacuation funnel. If safety valves are
not connected to an evacuation device, their intervention could flood the room.Hermann cannot
be held responsible for any damage arising from that situation.
Make sure that the hydraulic and heating systems ducts are not used as earth
connections of the electrical system.They are absolutely NOT SUITABLE for such a
use.
CONNECTION EXAMPLE

12
for the technician
Installation instructions
627
BOILER BOTTOM VIEW
1
2
System filling
Once the boiler is hydraulically connected, it is
possible to fill the system.
Warning: if boiler is installed in a room where
temperature can drop below 0°C, it is
recommended to fill the heating system with
an anti freezing mixture.
While filling, please follow carefully the following
phases:
— Open air vent in radiators;
— open filling tap;
— slowly unscrew screw [2] located in water filling
electro-valve, from position “C” to position“A” (see
picture), taking care of all air vent installed in the
system;
— as soon as water flows out of air vent radiators,
close air vents;
— check on the manometer [1] that pressure reaches
the optimal value of 1÷1.5 bar (minimum: 0.5 bar),
then reset screw [2] in position “C” (closed);
— repeat previous operations until all air in the system has been blown out.
Note: Boiler is equipped with a special automatic filling device, which automatically fills boiler to
reset its pressure provided that boiler is electrically fed.

13
for the technician
Installation instructions
Gas connection
Remark: If gas cock position is foreseen near the WALL, install first gas cock, then water inlet tap.
Boiler installation must be carried out from a qualified technician, [exemple: as indicated by the Law
XXXXX] because an incorrect installation can cause damages to people, animals or things, for
which the manufacturer cannot be held responsible.
Verify what follows:
a) cleaning of all system gas pipes in order to avoid the presence of residual combustion products
that could compromise the correct boiler functioning;
b) gas line and ramp conformity with laws and rules actually in force (exemple: Laws UNI-CIG
7129/01, 7131/99 - DM 12/04/96);
c) internal and external tightness of the gas system and
connections;
d) supply pipe must have a section greater than or equal
to the boiler one;
e) supply gas must correspond to the one for which the
boiler has been regulated; otherwise, call [a
HERMANN Service Centre] [a qualified technician]
for gas conversion;
f) an interception valve must be installed upstream the
appliance;
Open the meter valve and purge the air that is inside the system pipes (including all the appliances).
While connecting gas inlet pipe of the boiler to the pipe coming from gas network, it is
MANDATORY to insert a TIGHT GASKET, whose dimensions and material must be
adequate. Connection is NOT suitable for hemp, teflon strip or similar materials.
Using LPG, it is absolutely necessary to install a pressure reducer upstream the boiler.
Electrical connections
GENERAL WARNINGS
The cable for electrical supply must be connected to an electrical line of 230V-50Hz, respecting the
polarities L-N (Live-Neutral) and the earth connection.
PLACE UPSTREAM THE BOILER A BIPOLAR SWITCH in accordance with the rules
actually in force.
For the general electrical supply of the appliance, the use of adaptors, multiple taps and extensions
is not allowed.
It is mandatory the earth connection in accordance with the CEI rules actually in force.
Electrical safety of the appliance is only achieved when it is well connected to an
efficient earthing system, executed as indicated by the safety rules actually in force.
CONNECTION EXAMPLE

14
for the technician
Installation instructions
A qualified technician must check that the electrical system is in line with the maximum power
allowed by the boiler, indicated on the data plate, with particular attention to the cables section.
Remark: HERMANN Ltd. declines any responsibility for damages to persons, animals or
things caused by the non-connection of the boiler earthing and by failure to comply with
the rules.
ELECTRICAL CONNECTIONS TO THE BOILER
— Unscrew the two screws [1] and remove cover [2];
— extract yellow and white connectors;
— make electric connections as shown in the picture
situated on the other side of the cover:
• connect earth wire to yellow connector;
• connect NEUTRAL cable (N) and PHASE (L)
to WHITE connector, precisely as shown in
the picture;
If PHASE and NEUTRAL wires are reversed,
the boiler will not work.
• when a Room Thermostat or Chrono
Thermostat (TA) and/or Outdoor Temperatu-
re Probe (SE) are foreseen, unplug GREEN
connector from PCB and make connections
as shown in the picture. If TA is installed,
disconnect jumper [X].
TA and SE terminals on green connector work
at low voltage: only connect NON POWERED
wires coming from simple contact of Room
Thermostat / Chrono Thermostat, and/or
Outdoor Temperature Probe. DO NOT connect
live wires, for any reason.
Original Hermann remote control (optional kit)
must NOT be connected to green connector.
Special interface card, supplied in the remote
control kit, must be used.
All low-voltage wirings (e.g.TA, SE and original Hermann remote control) must be kept sepa-
rate from power supply cables, as to avoid boiler malfunctionings due to electrical noise. It is
advisable to use separate tubes for them.
— all the relevant connections must be inserted in modulation PCB, FOLLOWINGTHE CORRECT
COLOURS.They have been provided with special plugs for correctly connect them.
— close cover inserting cables in the provided holes [3] and screw the screws [1];
— block cables with the special device [4].
1234
TA
X
SE
642_R01
LN

15
for the technician
Installation instructions
Chimney connections
EURA E (natural draught)
Place here all necessary
advices according to national rules about
CHIMNEY CONNECTIONS of OPEN chamber boilers
FLUE
NO YES
These diagrams are
to explain the most
important ITALIAN
laws concerning
chimney connections
(for EXAMPLE
purpose only)
PRODUCTS TEST POINT
2500 mm MAX
SLOPE
min 3%
2 x d
min
d

16
for the technician
Installation instructions
Chimney connections
EURA SE (forced draught)
NOTE ON FLUE INSTALLATION
When fitting air inlet and flue outlet horizontal
ducts, it is necessary to make sure there is a slope
of 2÷5% downwards from the boiler to the out-
side (see diagram). This is essential to guaran-
tee correct boiler operation and reliability. Air in-
let and flue outlet terminals should be protected
by suitable approved flue accessories, to avoid
environmental elements penetration.
Place here all necessary
advices according to national rules about
CHIMNEY CONNECTIONS of SEALED chamber boilers
2% ÷ 5%
631R01

17
for the technician
Installation instructions
AB
P
O
NC
M
F
E
D
IH
L
G
tupnitaehriehtnognidneped,sreliobthguarddecrofrofslanimreteulffogninoitisoP
gninoitisoplanimreTsecnatsiD
secnailppA
*Wk4morf
Wk7ot
mm
.nim
Wk7morf
Wk61ot
mm
.nim
Wk61morf
Wk53ot
mm
.nim
wodniwarednUA003005006
tnevrianarednUB003005006
rettugarednUC003003003
**ynoclabarednUD003003003
wodniwtnecajdanamorFE004004004
tnevriatnecajdanamorFF006006006
***sepipnoitaucavelatnozirohrolacitrevmorFG003003003
gnidliubehtforenrocamorFH003003003
gnidliubehtfosseceramorFI003003003
roolfrehtonamorfrodnuorgehtmorFL004 0051 0052
yllacitrevslanimretowtneewteBM00500010051
yllatnozirohslanimretowtneewteBN0050080001
ongnivah,ecafrusrehtonagnicafecafrusamorF
.stm3foecnatsidanihtiwslanimretrosgninepo
elohnoitaucaveehtmorf
O005100810002
nihtiwslanimretrosgninepohtiwtub,evobasA
elohnoitaucaveehtmorf.stm3foecnatsida P005200820003
* Appliances with an heat input lower than 4 Kw are not subjected to any limitation for the terminals
positioning, except for the points O and P.
** The terminals under a practicable balcony must be positioned in such a way that the total flue run, from
the terminal outlet to its own outlet from the external balcony perimeter, included the height of the
eventual protection banisters, is no lower than 2000 mm.
*** In the terminal positioning, it will
be necessary to keep
distances not inferior to 500
mm. in case of close proximity
to materials sensible to the
combustion products action
(e.g., plastic gutters and
downpipes, wood projections
and so on), unless adequate
measures of protection have
been adopted.
 The terminals must be
designed in such a way that the
combustion products flow is as
much as possible ascensional
and protected from the tempe-
rature effects.
In case of evacuation to wall, the positions indicated in the following drawing and table must be
respected:

18
for the technician
Installation instructions
High capacity fan
EURA 23 SE
For EURA 23 SE (forced draught) it is possible to install, on request, an “high capacity fan”, allowing
an higher length of separate flue systems (see table):
Øtelniria/teltuostcudorpeulfetarapeS mm08
htgneleulfetarapeS m)ociracs02xam(03
nafyticapachgihhtiwhtgneleulfetarapeS m)ociracs04xam(06
ASSEMBLING INSTRUCTIONS
It is advisable to install the high capacity fan,
before flue kit, avoiding any possible hindrance
during assembling operations.
Provide electrical disconnection of the gas
boiler and remove the sealed chamber closing;
1. Take off screws A, loosen screws B (it is
not necessary to take off screws B, being
the fan bracket provided with button-holes)
and remove the standard fan,
disconnecting its cables for electrical
supply; remove the flue pressure sensor.
2. Remove gasket C from standard fan and
insert it on high capacity fan; install the
flue pressure sensor, respecting its
previous position.
Install the high capacity fan, connect the
cables for electrical supply, tighten screws B
and reinsert screws A.
Reassemble the sealed chamber closing.

19
for the technician
Installation instructions
Flue options
EURA SE
AIR INLET AND PRODUCTS OUTLET THROUGH
SEPARATE PIPES
Attention: see table and, if required, install the
diaphragm “D” as indicated in the figure besides
(any additional 90° bend = 0.5 linear meters, 45°
bend = 0.25 meters).
D
ledoM
stcuddetarapesmm08Ø
SC+AC
xam÷nim
)m(
SC
xam
)m(
mgarhpaiD
fohtgneL
)m(SC+AC
retemaid
)mm(
ES32 03÷2 02 8otpu )d(
8nahterom ON
ES32
hgihhtiw
nafyticapac
06÷13 04 ON
ES82 52÷2 02 8otpu )d(
8nahterom ON
ES23 02÷2 21 6otpu )d(
6nahterom ON
stcudmm08Ø
noitcennoclaixaocnorettilpSsepiPhtiw
ES32 41÷2 31 ON
ES82 41÷2 7 ON
ES23 elbissoptoN
(d) use the diaphragm supplied with the boiler.

20
for the technician
Installation instructions
Flue options
EURA SE
AIR INLET AND PRODUCTS OUTLET THROUGH
COAXIAL SYSTEM
Attention: see table and, if required, install the
diaphragm “D” as indicated in the figure besides
(any additional 90° bend = 1 linear meter, 45°
bend = 0.5 meters).
D
(d) use the diaphragm supplied with the boiler. (b) available on request.
ledoM
metsyslaixaoc001/06Ø
OL
xam÷nim
)m(
VL
xam÷nim
)m(
mgarhpaiD
VLroOL
)m(htgnel
retemaid
)mm(
ES42 4÷5.0 5÷1
1otpu )b(44
2ot1 )d(
2nahterom ON
ES82 3÷5.0 4÷1 1otpu )d(
1nahterom ON
ES23 3÷5.0 4÷1 1otpu )d(
1nahterom ON