Hermann Supermicra 23 E User manual

Supermicra
23 E – 28 E
24 SE – 30 SE
ATTENTION
(for SUPERMICRA 24/30 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.
INSTRUCTIONS MANUAL
FOR THE GAS BOILER

2
sections for the usersections for the technician
Index
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.
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.
Introduction ..................................3
Technical data...............................4
Installation ....................................8
Safety laws and rules referred to technicians
assigned to boilers installation .............. 8
Laws and rules referred
to boilers installation .............................. 8
Boiler location .............................................. 9
Boiler hanging ........................................... 10
Replacement of “Micra” boiler ................... 11
Hydraulic connections ............................... 12
System filling ............................................. 13
Gas connection ......................................... 13
Electrical connections ............................... 14
Chimney connections
SUPERMICRA E (natural draught) ...... 15
Chimney connections
SUPERMICRA SE (forced draught) .... 16
High capacity fan
SUPERMICRA 24 SE .......................... 18
Flue systems
SUPERMICRA SE ............................... 19
Regulation and servicing........... 21
Access to the regulation devices .............. 21
Preliminary GAS checkings....................... 21
Gas valve pressure regulation (MAX-MIN) 22
Slow opening regulation ............................ 23
Regulation of MAX heating power ............. 23
Changing Gas type ................................... 26
Combustion check ..................................... 27
Hydraulic section ....................................... 27
Electronical regulation ............................... 28
Warnings for servicing............................... 29
Components of the gas boiler
SUPERMICRA 23 E - 28 E .................. 30
Components of the gas boiler
SUPERMICRA 24 SE - 30 SE ............. 31
Electric diagram for
SUPERMICRA 23 E - 28 E .................. 32
Electric diagram for
SUPERMICRA 24 SE - 30 SE ............. 33
User instructions ........................34
Warnings for first starting up ..................... 34
Useful advices ........................................... 34
Warnings ................................................... 35
Boiler controls ........................................... 36
Instructions for boiler ignition,
functioning and turning off ................... 36
Working and warning indicators ................ 38
Boiler inactivity .......................................... 40
Incidental not functioning .......................... 41
User warnings ........................................... 42

3
Introduction
for the technician and for the user
INTRODUCTION
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].
— User can ONLY make those operations that are specifically described in the “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
Technical data
for the technician
TECHNICAL DATA
ATADLACINHCET.M.U ARCIMREPUS
E32
ARCIMREPUS
E82
ARCIMREPUS
ES42
ARCIMREPUS
ES03
noitacifitrecEC°n0173NB49600173NB49600173NB49600173NB4960
ssalC 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
)iH(tupnitaehxaMWk6.526.525.030.036.526.522323
)iH(tupnitaehniMWk5.015.012.312.315.015.012.312.31
)iH(tuptuotaehxaMWk1.321.325.721.727.327.320303
)iH(tuptuotaehniMWk1.91.94.114.111.91.96.116.11
ON
x
ssalC 31313232
ONdethgieW
x
hWk/gm211402821802731851331491
tupnilanimontaOCmpp8309137463840383
OC
2
tupnilanimonta %7.46.59.48.57.685.67
YCNEICIFFE
ycneiciffelanimoN%8.094.192.397.39
daol%03taycneiciffE%1.888.984.097.19
GNITAEH
)xam÷nim(egnarnoitceleserutarepmeTC°08÷0308÷0308÷0308÷03
lessevnoisnapxE l8888
erusserplessevnoisnapxErab1111
erusserpgnikrowxaMrab3333
erutarepmetmetsysxaMC°58585858
RETAWTOH
esirerutarepmetC°52taetarwolFnim/l2.318.516.312.71
esirerutarepmetC°03taetarwolFnim/l0.112.313.113.41
wolfretawniMnim/l3333
erusserpylppusxaMrab6666
erusserpytiroirprof(erusserpylppusniM
)noitavitcahctiws rab8.08.08.08.0
)xam÷nim(egnarnoitceleserutarepmeTC°07÷0307÷0307÷0307÷03
ATADLACIRTCELE
ycneuqerf/egatloVzH/V05/03205/03205/03205/032
noitpmusnocrewoP
)nafyticapachgihhtiw=PAV( W001031)PAV061(051081
noitcetorpfoleveLD4XPID4XPID4XPID4XPI
SNOISNEMID
htpeD-thgieH-htdiWmmmargaid"SNOISNEMID"otrefeR
thgieWgk5.235.235.735.83
)teltuO=S(SNOITCENNOC
nruter/wolfgnitaeHhcnI"¾"¾"¾"¾
teltuo/telniretaWcitsemoDhcnI"½"½"½"½
reliobehtotnoitcennocsaGhcnI"¾"¾"¾"¾
kcocsagehtotnoitcennocsaG
tiknoitcennocdradnatsfo hcnI"½"½"½"½
ØteltuostcudorpeulFmm031041
Øtelniria/teltuostcudorpeulflaixaoCmm 06/00106/001
xam/nim)latnoziroh(htgneleulflaixaoCm 4÷5.03÷1
xam/nim)lacitrev(htgneleulflaixaoCm 5÷14÷1
Øtelniria/teltuostcudorpeulfetarapeSmm0808
xam/nimhtgneleulfetarapeSm 03÷2
)02=Sxam(
61÷2
)01=Sxam(
xam/nimhtgneleulfetarapeS
htiw nafyticapachgih m06÷13
)04=Sxam(
htgneleulfetarapeS
xam/nimtilps-sepiphtiw m41÷2 )31=Sxam(
01÷2
)7=Sxam(
ERUSSERPYLPPUSSAG
epytsaG02G /03G
13G 02G /03G 13G 02G /03G 13G 02G /03G 13G
erusserplanimoNrabm0273/920273/920273/920273/92
rebmunsrotcejnI3131414131314141
retemaidsrotcejnI Ø
mm001/1 02157/5752167/6702157/5703187/87
NOITPMUSNOCSAG
xamQ
h/cm17.2 22.3 17.2 83.3
h/gk /10.2
89.1
/63.2
33.2
/10.2
89.1
/25.2
84.2
nimQ
h/cm11.1 04.1 11.1 04.1
h/gk /38.0
18.0
/40.1
20.1
/38.0
18.0
/40.1
20.1

5
Technical data
for the technician
ledomrelioB L
)mm(
H
)mm(
P
)mm(
X
)mm(
Y
)mm(
Q
)mm(
R
)mm(
S
)mm(
T
)mm(
E32ARCIMREPUS004057743702391491
E82ARCIMREPUS004057743702391491
ES42ARCIMREPUS00405774370239116164257523
ES03ARCIMREPUS00405774370239116164257523
DIMENSIONS
1teltuostcudorpeulF
2metsyslaixaocroftelniriA
3metsysetarapesroftelniriA
Supermicra 24-30 SE
models only:
Supermicra E - SE
L
X
P
Q
Y
H
703
2346
52 52 88 39 116.5 136
4
695_R02
G TA / L FCMR
RHeating return (3/4”)
MHeating flow (3/4”)
CHot water outlet (1/2”)
FCold water inlet (1/2”)
TA / L Zone for electrical power
supply and room thermostat
connections
GGas (3/4”)
X
ST
1
2
3
Y
R
Q
696_R01

6
Technical data
for the technician
AVAILABLE PUMP CAPACITY
Model SUPERMICRA 23 E / 24 SE
with selector in speed position I, II, III (automatic by-pass, not disconnectable)
AVAILABLE PUMP CAPACITY
MOD. SUPERMICRA 28 E / 30 SE
with selector in speed position I, II, III (automatic by-pass, not disconnectable)
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
0 200 400 1000 1200600 800 1400
711
R00
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
0 200 400 1000 1200600 800 1400
712
R00
Water flow l/h
Pressure m. H2O
Water flow l/h
Pressure m. H2O
772R01

7
Technical data
for the technician
BOILER SCHEMATIC SUPERMICRA E
SUPERMICRA SE
1 Drain valve
2 Heating thermometer + gauge
3 By-pass
4 Pump
5 Heating system safety valve 3 bar
6 Expansion vessel
7 Burner
8 Primary heat exchanger
9 Flue hood (“E” models)
10 Flue thermostat (“E” models)
11 Flue hood (“SE” models)
12 Flue pressure switch (“SE” models)
13 Fan (“SE” models)
14 Safety thermostat
15 Venting device
16 NTC temperature sensor
17 Hydraulic 3-way valve
18 Priority pressure switch
19 Domestic exchanger
20 Filling valve
21 Gas valve
22 Loss of water switch
DOMESTIC
WATER
GAS
INLET
HEATING
FLOW
OUTLET
RETURN
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” or the “Dimensions” drawing.
DOMESTIC
WATER
GAS
INLET
HEATING
FLOW
OUTLET
RETURN

8
Installation
for the technician
INSTALLATION
Safety laws and rules referred to technicians
assigned to boilers installation
Place here all necessary
advices according to national rules
about WORK SAFETY
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 instal-
lation/maintenance work as metal parts may cause injuries such as cuts and
abrasions. Wear gloves while doing the above mentioned operations.
Laws and rules referred
to boilers installation
Place here all necessary
advices according to national rules
about BOILER INSTALLATION
Law number XXXX
“Law title and/or brief description”

9
Installation
for the technician
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 appli-
ances in the same room
Law number XXXX
“Law title and/or brief description”
ROOM VENTILATION (mod. SUPERMICRA 23/28 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.
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.
Thanks to its antifreeze system, inner components could never reach a temperature lower than
5°C. This system is activated when the boiler is connected to the electrical and gas supply lines.
On request, it is possible to install an antifreeze electrical resistance device on the domestic ex-
changer, so as to protect boiler even in case of gas lack.
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.

10
Installation
for the technician
785
692_R01
69
32.5
35
14
330
52 52 88
13
39 40 30 46.5 52.5
14
35
335
400
32.5
666
23
20
30
712
AA
B B
C
D
A1
B1
Boiler hanging
REMARK: A re-utilizable metal jig can be ordered separately, so as to facilitate connections and
fixing points positioning (when the standard connection kit is used). If the standard connection
kit is not used, refer to the “Dimensions” drawing (Technical Data section) for the position of the
connections directly on the boiler.
REMARK: If SUPERMICRA replaces a MICRA, see next section “Replacement of a MICRA boiler”
to keep the same hydraulic and flue connections.
— Consider gas boiler size and sufficient clearances [C] for servicing/repair. It is recommended:
50mm on both lateral sides and 300 mm on lower side;
— To fix the boiler with wallplugs (“stud” type with nut), center the relevant wall holes as regards to
[A] points. To hang it with open hooks, place hooks in correspondence with [B] points.
— Using the jig or respecting the measures indicated in the figure, fix up electrical connections
and all ducts for heating flow and return, cold water, hot water and gas.
— Hang the boiler to the wallplugs or hooks,
using the holes ([A1] for the wallplugs and
[B1] for the open hooks).
—Remove the plastic caps from the boiler
connections prior to connecting boiler to
the pipework.
REMARK: To facilitate boiler connection, it is
possible to remove temporarily the lower
grid, unscrewing its four screws.
— As far as air inlet and flue outlet ducts are
concerned (forced draught models),
please refer to “Flue systems” paragraph,
where measures are referred to the upper
edge of boiler’s body [D].
Gas (1/2")
Hot water OUTLET (1/2")
Cold water INLET (1/2")
Heating RETURN (3/4")
Heating FLOW (3/4")
Electrical power supply
Room thermostat

11
Installation
for the technician
A1
B1
693_R00
A2
B2
694_R00
Replacement of “Micra” boiler
SUPERMICRA Boiler has been designed to easily replace MICRA Boiler keeping, according to the
different cases, the position of the hydraulic connections and/or of the upper edge of the boiler.
NOTE: If a MICRA 28 E/SE is replaced by a SUPERMICRA it is necessary to move the plug or the
right hook of 50 mm leftwards (verify and check the measures with the jig or with the relative
figure).
— Before connecting the boiler with the hydraulic and gas connections, take off the Protection
Plastic Caps.
SAME HYDRAULIC CONNECTIONS OF MICRA
To preserve the hydraulic connections it is sufficient to move the gas connections upwards of 9 mm
(or use for the purpose a flexible connection) and adapt the Flue System so that:
— the length of the vertical stretch remains twice superior in respect of the diameter and the
climbing slope (beginning from the boiler) of the eventual horizontal stretches remains 3%
(minimum) in “E” MODELS with Natural Draught;
— the descending slope (beginning from the boiler) of the horizontal stretches of the air inlet and
outlet ducts, necessary to impede the flowing back of the liquids in the combustion chamber
(condensation, rain and so on, see also “Connections to SUPERMICRA’s chimneys”) remains
of 2% in the “SE” MODELS with Forced Draught. If this slope is not installed, the Installation
of Supermicra SE (which is lightly higher than MICRA) allows to restore it.
If it weren’t possible to observe these instructions (E.g.:
for the absence of vertical stretches, impossibility to
respect the slopes) go on following the instructions
written in “SAME UPPER EDGE” Chapter.
Disconnect the old MICRA from the system and remove it.
Hang the SUPERMICRA in the same way, to the existent
hooks or plugs, using the eyelets [A1] or [B1] pointed out in
the figure.
SAME UPPER EDGE OF MICRA
There are situations in which it is necessary to install
SUPERMICRA keeping the height of the outlets on the up-
per board, for example when there are not vertical stretches
at the flue products outlet or when these stretches are al-
ready of the smallest length. This solution implies the use of
flexible connections to make the hydraulic connections.
Disconnect MICRA from the system and remove it. Hang
the SUPERMICRA in the same way, to the existent hooks
or plugs, using the eyelets [A2] or [B2] pointed out in the
figure. Connect it to the hydraulic connections through suit-
able flexible pipes.

12
Installation
for the technician
CONNECTION EXEMPLE
Hydraulic connections
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 re-
ductions 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.
PUMP’S SPEED
The pump has a selector which allows
to reduce the speed, so as to reduce
the noise produced by the too rapid cir-
culation of the liquids in too small heat-
ing systems.
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 of 1 bar in the heating system, and reduce the flow od hot
water available from the boiler.
In case of stronger pressure it is necessary to install a PRESSURE REDUCER 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.
However, it is possible 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 technical data.
— 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 can-
not be held responsible for any damage arising from that situation.
Make sure that the hydraulic and heating systems ducts are not used as earth con-
nections of the electrical system. They are absolutely NOT SUITABLE for such a use.
772R01

13
Installation
for the technician
System filling
Once all system connections have been carried out,
proceed with system filling. This operation should be
made with caution, respecting the following steps:
— Open the radiators venting devices;
— Gradually open the water supply valve (see figure
“Boiler bottom view”), checking the correct func-
tioning of automatic venting devices, eventually
installed;
— Close the radiators venting devices as soon as
water flows;
— Make sure that pressure gauge reaches the opti-
mal value of 1÷1.5 bar (minimum: 0.5 bar);
— Close the water supply valve and bleed each ra-
diator;
In case the boiler is installed in rooms where temperature can drop down to 0°C, it is advis-
able to fill up the system with an anti-frost liquid.
Gas connection
Boiler installation must be carried out from a qualified technician, [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 (Laws UNI-CIG 7129/01 and
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
[an HERMANN Servicing 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 appli-
ances).
BOILER BOTTOM VIEW
FILLING
VALVE

14
Installation
for the technician
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.
Due to various installation possibilities, the gas cock supplied with Standard Connections Kit for
SUPERMICRA boilers has a simple male Ø ½” connection, facing the rear of the boiler. No gas
pipes are supplied.
Electrical connections
The link of the room thermostat works with a safety extra low voltage (SELV); connect it to
the voltage free terminals of the room thermostat/cronothermostat. On NO account must
any electrical voltage be applied to these terminals.
The boiler 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 exten-
sions is not allowed.
If the supply cable must be replaced, use one of the following wire types: H05VVF or H05-VVH2-F.
It is mandatory the earth connection in accordance with the rules actually in force. To re-
place the cable, release the cable fastener placed on the frame of the hydraulic connections, open
the back cover of the control panel and disconnect it from the terminals. Install the new cable
working in the reverse way. When connecting the cable to the boiler, it’s IMPORTANT:
— to leave the Earth wire about 2 cm longer than Live and Neutral wires;
— to lock tha cable in the cable fastener placed on the frame of the hydraulic connections.
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.
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.

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

16
Installation
for the technician
Chimney connections
SUPERMICRA 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
FLUE
NO YES
2% ÷ 5%
631R01

17
Installation
for the technician
AB
P
O
NC
M
F
E
D
IH
L
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tupnitaehriehtnognidneped,sreliobthguarddecrofrofslanimreteulffogninoitisoP
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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
Installation
for the technician
High capacity fan
SUPERMICRA 24 SE
For SUPERMICRA 24 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)teltuo02xam(03
nafyticapachgihhtiwhtgneleulfetarapeS m)teltuo04xam(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 clos-
ing;
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, disconnect-
ing 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 previ-
ous position.
Install the high capacity fan, connect the ca-
bles for electrical supply, tighten screws B and
reinsert screws A.
Reassemble the sealed chamber closing.

19
Installation
for the technician
D
Flue systems
SUPERMICRA SE
AIR INLET AND PRODUCTS OUTLET THROUGH
SEPARATE PIPES
Attention: see table and, if required, install the dia-
phragm “D” as indicated in the figure besides (any
additional 90° bend = 0.5 linear meters, 45° bend =
0.25 meters).
ledoM
stcuddetarapesmm08Ø
SC+AC
xam÷nim
)m(
SC
xam
)m(
mgarhpaiD
retemaid
)mm(
otpu
)m(SC+AC
ES42 03÷2 02 )a( 8
hgihhtiwES42
nafyticapac 06÷13 04 ON
ES03 61÷2 01 )a( 8
stcudmm08Ø
noitcennoclaixaocnorettilpSsepiPhtiw
ES42 41÷2 31 ON
ES03 01÷2 7 ON
(a) use the diaphragm supplied with the boiler.

20
Installation
for the technician
Flue sistems
SUPERMICRA SE
AIR INLET AND PRODUCTS OUTLET THROUGH
COAXIAL SYSTEM
Attention: see table and, if required, install the dia-
phragm “D” as indicated in the figure besides (any
additional 90° bend = 1 linear meter, 45° bend = 0.5
meters).
D
(a) use the diaphragm supplied with the boiler. (b) available on request.
ledoM
metsyslaixaoc001/06Ø
OL
xam÷nim
)m(
VL
xam÷nim
)m(
mgarhpaiD
retemaid
)mm(
OLotpu
)m(VLro
ES42 4÷5.0 5÷1 )b(44
)a(
1
2÷1
ES03 3÷1 4÷1 )b(64 1