Unical ALKON 100 EXT Datasheet

ENGLISH
INSTALLATION AND SERVICING MANUAL
100 EXT - 115 EXT - 140 EXT
ALKON

2
Provisions for proper disposal of the product
At the end of its life cycle the product must not be disposed of as urban waste. It can be taken to a special
recycling centre managed by the local authorities, or to a dealer who o󰀨ers this service.
Separate disposal of a domestic appliance avoids possible negative consequences for the environment and
human health deriving from inappropriate waste handling and allows the recovery of the materials of which
it is made, in order to obtain signicant energy and resource savings.
http://www.unicalag.it/prodotti/professionale-300/light-commercial-alluminio/1639/alkon-140-ext

3
Installation Instructions Technical Features General information
Maintenance instructions
ENGLISH
2 TECHNICAL FEATURES AND DIMENSIONS................................................................................................................10
2.1 Technical features....................................................................................................................................................10
2.2 Main components view and dimensions ..................................................................................................................10
2.3 Dimension................................................................................................................................................................11
2.4 Available ow rate / pressure diagram.....................................................................................................................12
2.5 Operation data .........................................................................................................................................................13
2.5.1 Data ErP directive...........................................................................................................................................14
4 MAINTENANCE INSTRUCTIONS...................................................................................................................................31
4.1 Inspection and maintenance instructions.................................................................................................................31
4.3 Adaptation to the use of other gas ..........................................................................................................................33
4.4 Operation parameters programming........................................................................................................................34
4.5 Wiring diagram.........................................................................................................................................................36
4.6 Error codes ..............................................................................................................................................................38
3 INSTALLATION INSTRUCTIONS....................................................................................................................................15
3.1 General warnings.....................................................................................................................................................15
3.2 Installation standards...............................................................................................................................................15
3.3 Preventive system verication and adjustment operations......................................................................................15
3.4 Packaging ................................................................................................................................................................16
3.5 Positioning the boiler................................................................................................................................................17
3.6 Flue gas exhaust pipe connection ...........................................................................................................................18
3.7 Connections.............................................................................................................................................................19
3.8 Filling the system .....................................................................................................................................................20
3.9 Electrical connections ..............................................................................................................................................22
3.10 Commissioning ..................................................................................................................................................... 27
3.11 Measurement of combustion e󰀩ciency during installation.......................................................................................28
3.11.1 Calibration function activation ....................................................................................................................28
3.11.2 Probes positioning .....................................................................................................................................29
3.12 Burner adjustment....................................................................................................................................................29
1 GENERAL INFORMATION.................................................................................................................................................4
1.1 General warnings.......................................................................................................................................................4
1.2 Symbols used in the manual......................................................................................................................................5
1.3 Appropriate use of appliance .....................................................................................................................................5
1.4 Information for system manager ................................................................................................................................5
1.5 Safety warnings .........................................................................................................................................................6
1.6 Technical data plate ..................................................................................................................................................7
1.7 Water treatment .........................................................................................................................................................8
1.8 Boiler antifreeze protection ........................................................................................................................................9
Attention: this manual contains instructions for the exclusive use of the professionally qualied installer and/or maintenance
technician in compliance with current legislation.
The user is NOT qualied to intervene on the boiler.
The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from failure to comply with
the instructions contained in the manuals supplied with the boiler.

4
1GENERAL INFORMATION
Any product repairs must be performed solely by personnel
authorised by Unical, using original spare parts only. Failure to
comply with the above can compromise the safety of the appli-
ance and void the warranty.
To guarantee appliance e󰀩ciency and its correct operation,
yearly maintenance must be performed by qualied personnel.
Should you decide not to use the appliance, parts entailing
potential sources of hazard must be made safe.
Before commissioning an appliance that has not been used,
wash the domestic hot water production system, making the
water ow until it has been fully replaced.
Should the appliance be sold or transferred to a new owner or
if you move and leave the appliance, always make sure that the
instruction booklet accompanies it in order to be consulted by
the new owner and/or installer.
Only original accessories must be used for all appliances with
optionals or kits (including electric).
This appliance is intended solely for the use for which it was
expressly designed.
Any other use is to be considered improper and therefore dan-
gerous (*).
1.1 - GENERAL WARNINGS
The instruction booklet is an integral and essential part of the
product and must be kept by the user.
Read the warnings contained in this instruction booklet carefully
as they provide important guidelines regarding installation, use
and maintenance safety.
Keep the booklet with care for further consultation.
Your appliance must be installed and serviced in compliance
with the standards in force according to the manufacturer
        

Systems for the production of domestic hot water MUST be
constructed entirely with compliant materials.


components for civil use, domestic hot water production

provided for by current legislation.
Incorrect installation or improper maintenance can cause
damage to persons, animals or objects for which the man-
ufacturer is not responsible.
Before performing any cleaning or maintenance, disconnect the
appliance from the energy mains by acting on the switch of the
system and/or through the specic cut-o󰀨 devices.
Do not obstruct the terminals of the intake/exhaust ducts.
In the event of failure and/or malfunctioning of the appliance,
switch it o󰀨 and do not try to repair it or intervene on it directly.
Contact only personnel qualied in compliance with law.

5
1.2 - SYMBOLS USED IN THE MANUAL

NOTE!
Tips
for the user
ATTENTION!
Possible dangerous
situation for the product
and the environment
DANGER!
Serious danger
to safety
and health
1.3 - APPROPRIATE USE OF APPLIANCE

safety rules.
Nonetheless, if improperly used, dangers could arise for the safety and life of the user and other persons
or damage to the equipment or other objects.

domestic hot water.
Any other use must be considered improper.
For any damage resulting from improper use, UNICAL AG S.p.A. assumes no responsibility.
Use according to the intended purposes also includes strict compliance with the instructions in this manual.
The user must be instructed concerning the use and operation of his heating system, in particular:
• Deliver these instructions to the user, as well as other documents concerning the appliance inserted in the envelope
inside the packaging. 
• Inform the user about the importance of the air vents and the ue gas exhaust system, highlighting their essential
features and the absolute prohibition of modifying them.
• Inform the user concerning controlling the system's water pressure as well as operations to restore it.
• Inform the user concerning correct temperature control, control units/thermostats and radiators for saving energy.
• Please note that, in compliance with the standards in force, the inspection and maintenance of the appliance must
be carried out in compliance with the regulations and frequency indicated by the manufacturer.
• Should the appliance be sold or transferred to a new owner or if you move and leave the appliance, always make
sure that the instruction manual accompanies it in order to be consulted by the new owner and/or installer.
The manufacturer will not be held liable in the event of damage to persons, animals or objects resulting from
failure to comply with the instructions contained in this manual.
1.4 -INFORMATION FOR THE SYSTEM MANAGER
NOTE!
For further details




OBLIGATION!
wear gloves
protective
DANGER!
Danger of burns!

6
1.5 - SAFETY WARNINGS
ATTENTION!
The boiler cannot be used by children.
The boiler can be used by adults and only after having carefully read the user’s ma-
nual. Children should be supervised to ensure that they do not play or tamper with
the device.
ATTENTION!

personnel, in compliance with the standards and provisions in force. Incorrect instal-
lation can cause damage to persons, animals and objects for which the manufacturer
cannot be held responsible.
DANGER!
NEVER attempt performing maintenance or repairs on the boiler on your own initiative.
-
ing a maintenance contract.
󰀩
and cause damage to persons, animals and objects for which the manufacturer cannot
be held responsible.
Changes to the parts connected to the appliance (once the appliance installation is complete)
Do not modify the following parts:
- the boiler
- the gas, air, water and electricity supply lines
- the ue gas pipe, the safety valve and the exhaust pipe
- the construction parts which a󰀨ect the operating safety of the appliance
Attention!
To tighten or loosen the screwed ttings, use only appropriate xed spanners.
Incompliant use and/or inappropriate tools can cause damage (e.g. water or gas leakage).
ATTENTION!

Make sure that the gas tank has been deaerated before installing the appliance.
For state-of-the-art tank venting, contact the LPG supplier or person qualied in compliance
with the law requirement.
If the tank has not been professionally deaerated, ignition problems could arise.
In that case, contact the supplier of the LPG tank.
Smell of gas
Should a smell of gas be perceived, follow these safety guidelines:
- do not turn electric switches on or o󰀨
- do not smoke
- do not use the telephone
- close the gas shut-o󰀨 valve
- air out the area where the gas leakage has occurred
- inform the gas supplier or a company specialised in installation and maintenance of heating
systems.

Do not use or store explosive or easily ammable materials (e.g. petrol, paints, paper) in the
room where the appliance is installed.
DANGER!
Do not use the appliance as a supporting base for objects.
In particular, do not place receptacles containing liquids (Bottles, Glasses, Jars or Detergents)
on top of the appliance.
If the appliance is installed inside a housing, do not insert or rest other objects inside this housing.

7
General information
ENGLISH
The technical data plate is located inside the



certies the compliance of the equipment with the
essential safety requirements dened in the directi-
ves and applicable European regulations and that
its functioning satisfy applicable technical stan-
dards.
The CE marking is a󰀩xed to each piece of equip-
ment with an appropriate label.
The CE declaration of conformity issued in accor-
dance with international standards by the manu-
facturer, is placed in documentation envelope sup-
plied with the product.
KEY:
1 = CE monitoring body
2 = Type of boiler
3 = Boiler model
4 = Number of stars (directive 92/42 EEC)
5 = (S.N°) Serial Number
6 = P.I.N.ProductIdenticationNumber
7 = Typesofapproveduegasexhaustcongurations
8 = (NOx)NOxClass
A = Heatingcircuitcharacteristics
9 = (Pn) Effective nominal output
10 = (Pcond) Effective output in condensation
11 = (Qn)Maximumheatoutput
12 = (AdjustedQn)Adjustedforratedheatoutput
13 = (PMS)Max.heatingoperatingpressure
14 = (Tmax)Max.heatingtemperature
B = Domestichotwatercircuitcharacteristics
15= (Qnw)Ratedheatoutputindomestichotwaterfunction(ifdifferentto
Qn)
16= (D)SpecicD.H.W.owrateaccordingtoEN625-EN13203-1
17= (Rfactor)No.oftapsaccordingtothedeclaredamountofwater(EN
13203-1)
18 = (Ffactor)No.ofstarsaccordingtothedeclaredqualityofthewater
(EN13203-1)
19 = (PMW)Max.domestichotwateroperatingpressure
20 = (Tmax)Max.domestichotwatertemperature
C = Eletricalcharacteristics
21= Electricalpowersupply
22 = Consumption
23 = Protection rating
D = Countries of destination
24 = Direct and indirect countries of destination
25 = Gas category
26 = Supply pressure
E = Factory settings
27 = Adjusted for gas type X
28 = Space for national brands
G = ErP
29 = Seasonalspaceheatingenergyefciency
30 =EnergyefciencyinDHWproductionmode
/

8
1.7 - WATER TREATMENT
The treatment of the supply water allows to
prevent inconveniences and maintain the
󰀩
over time.
The ideal water pH in heating systems must

To minimise corrosion, it is crucial to use

properly, the metal surfaces must be clean.
(see system protection ACCESSORIES sect.
in domestic price list)
ATTENTION (*) see general warnings 1.1
The heating only models are NOT suitable
for the production of water for human con-
sumption according to Ministerial Decree

ATTENTION!
ANY DAMAGE TO THE BOILER CAUSED BY
THE FORMATION OF FOULING OR BY COR-
ROSIVE WATER WILL NOT BE COVERED BY
THE WARRANTY.
VALUE MIN MAX
PH 6,5 8
Hardness [°fr] 9 15
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
indicated at page 2.

9
Technical Features
ENGLISH
1.8 - BOILER ANTIFREEZE
PROTECTION
Enabled by default
This protection can intervene only if the
electricity and gas supplies are connected.
If one of the two is not available and upon reset
30 (SMG) a temperature between 2 ÷ 5°C is
detected, the appliance will behave as described
in tab. pos 2.
The heating system can be protected e󰀨ectively
from frost by using antifreeze products with
inhibitor for heating systems (specific for
multidmetal)
Do not use car engine antifreeze products as
they could damage the water gaskets.
P
O
S
ANTIFREEZE FUNCTION
Power supplies 30 - SMG (*) Status function
antifreeze
Actions
Electric Gas
1ON ON < 7 °C ON - Burner and Pump ON until T > 15°C
2
ON OFF
< 2 ÷ 5 °C OFF
FAULT CODE 16
(see par. 4.6 ERROR CODES).
Ignition disabled.
OFF ON OFF Ignition disabled.
OFF OFF OFF Ignition disabled.
(*) Sensor 30 par. 2.2
For outdoor installations, in partially protected places, you must use the additional heater
kit (optional) for antifreeze siphon cap.

10
2.2 - VIEW WITH THE INDICATION OF THE MAIN COMPONENTS
2TECHNICAL FEATURES AND DIMENSIONS
2.1 - TECHNICAL FEATURES
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
page of the www.unicalag.it website
A
22
20
Scond
RGM
29
12
26
11
11
10
10
25
34
3
37
S
19
18
5
32
31
13
14
30
27 28
24
35
38
33
1
24
2
24
LEGENDA
N° C.E. S.E. Description
3 VG Gas valve
5 Burner
10 HL TL Safety thermostat
11 Hb SR Heating temperature sensor
(1) (2)
12 Ht P Modulating Pump
13 Lp DK Water deciency pressure switch
14 Boiler drain valve
18 FL/ FH VM Fan
19 AF/AS PV Flue gas pressure switch
20 Safety valve drain system
22 rb SRR Return temperature sensor
24 Aluminium Heat Exchanger
25 Vent valve
26 Condensation drain trap
27
E. RIL. Detection electrode
28
E. ACC. Ignition electrode
29 Return shut-o󰀨 valve
30 SMG Sensor Flow General
31 Condensation drain trap

11
Technical Features
ENGLISH
2.3 - DIMENSIONS
Front view
View from below View from above
Side view
32 Outlet ue inspection
33 Heathing Controller
34 Gas cock
35 Ignition Trasformer
37
PFmin Gas min pressure switch
GGas inlet G 1’’
MHeating system ow G 2’’
RHeating system return G 2’’
Scond
Condensation drain DN 32
C.E. = ERROR CODES see
S.E. = WIRING DIAGRAM

12


Avaible Head (m.c.a.) metres of water
The table provides an indication the flow the pump in function of the Dt of the primary circuit.
ALKON 100 EXT ALKON 115 EXT ALKON 140 EXT
Power supply in kW 100 115 135
Max ow rate demanded l/h (Dt 15 K) 5591 6422 7545
Nominal ow rate request (Dt 20 K) 4193 4816 5659

13
Technical Features
ENGLISH
2.5 - OPERATING DATA ACCORDING TO UNI 10348 and GENERAL FEATURES
For the adjustment data: NOZZLES - PRESSURE - DIAGRAMS - FLOW RATES - CONSUMPTION refer to the paragraph ADAP-
TATION TO OTHER TYPES OF GAS.
ALKON 100 EXT ALKON 115 EXT ALKON 140 EXT
Appliance category II2H3P II2H3P II2H3P
Modulation Ratio 1:9,1 1:10,4 1:12,3
Nominal Heat Input on P.C.I. Qn kW 100 115 135
Minimum Heat Input on P.C.I. Qmin kW 11 11 11
Nominal Output (Tr 60 / Tm 80 °C) Pn kW 98,8 112,01 131,60
Minimum Output (Tr 60 / Tm 80 °C) Pn min kW 10,5 10,5 10,5
Nominal Output (Tr 30 / Tm 50 °C) Pcond kW 102,4 117,1 136,1
Minimum Output (Tr 30 / Tm 50 °C) Pcond min kW 11,5 11,5 11,5
E󰀩ciency at max. output (Tr 60 / Tm 80°C) % 98,83 97,4 97,48
E󰀩ciency at min. output (Tr 60 / Tm 80°C) % 95,1 95,1 95,1
E󰀩ciency at max. output (Tr 30 / Tm 50°C)) % 102,4 101,85 100,8
E󰀩ciency at min. output (Tr 30 / Tm 50°C) % 104,5 104,3 104,3
Rendimento al 30% del carico (Tr 30°C) % 108,2 108,3 108,3
Combustion e󰀩ciency with nominal load % 97,5 97,4 97,5
Combustion e󰀩ciency with minimum load % 98,35 98,35 98,35
Heat loss at casing with burner in operation (Qmin) % 3,28 3,28 3,28
Heat loss at casing with burner in operation (Qn) % 0,02 0,04 0,02
Flue gas temperature tf-ta (min)(*) °C 33 33 33
Flue gas temperature tf-ta (max)(*) °C 48,8 51,5 55
Maximum allowable temperature °C 100 100 100
Maximum operating temperature °C 85 85 85
Flue gas mass ow rate (min) kg/h 12,58 12,58 18,2
Flue gas mass ow rate (max) kg/h 114,39 129,20 220,8
Excess λ air % 26,84 24,25 25,53
Flue losses with burner in operation (min) % 1,65 1,65 1,65
Flue losses with burner in operation (max) % 2,47 2,56 2,90
Minimum heating circuit pressure bar 0,5 0,5 0,5
Maximum heating circuit pressure bar 6 6 6
Max allowable pressure of the generator bar 8 8 8
Water content l 10 10 10
Gas Consumption Natural (20 mbar) gas G 20 a Qn m3/h 10,57 12,16 14,27
Gas Consumption Natural gas (20 mbar) G 20 a Qmin m3/h 1,16 1,16 1,16
Gas Consumption G25 (supply pressure 25 mbar) Qn m3/h 12,30 14,14 16,60
Gas Consumption G25 (supply pressure 25 mbar) Qmin m3/h 1,35 1,35 1,35
Gas Consumption G31 (supply pressure 37/50 mbar) Qn kg/h 7,76 8,93 10,48
Gas Consumption G31 (supply pressure 37/50 mbar) Qmin kg/h 0,85 0,85 0,85
Max. available pressure at the chimney base Pa 70 70 70
Condensate production max kg/h 13,7 18,5 21,8
Emissioni
CO at Minimum Heat Input with 0% of O2 mg/kWh 83 131 139
NOx at Nominal Heat Input with 0% of O2 mg/kWh 48 56 58
NOx Class 6 6 6
Electrical Data
Voltage/Frequency electric power supply V/Hz 230/50 230/50 230/50
Fuse on main supply A (R) 4 4 4
Insulation degree IP X5D X5D X5D
Room Temperature = 20°C
(*) Temperatures detected with the unit in operation (Tr 60 / Tm 80°C)
CO2 (min/max) See table INJECTORS PRESSURES
Seasonal space heating energy
2009/125 CEE (<=400Kw) ηs - see ErP table
Stand-by heat loss ∆T 30°C - Pstb - see ErP table
Consumption in stand-by - Psb - see ErP table

14
2.5.1 - DATA ACCORDING TO ErP DIRECTIVE
EXT 100 EXT 115 EXT 140
Element Symbol Unit
E󰀨ective nominal output
Pnominale kW 99 112 132
Seasonal energy e󰀩ciency to heat
the room ƞs% 93 93 93
󰀩
discharge AAA

Useful Heat Output in high-tempera-
ture regime
(Tr 60 °C / Tm 80 °C)
P4kW 55,0 61,4 71,2
Useful e󰀩ciency at nom. heat output
in high-temperature regime
(Tr 60 °C / Tm 80 °C
ƞ4% 89 87,8 87,8
Useful heat output at 30% of nom.
heat output in low-temperature
regime (Tr 30 °C)
P1kW 18 20,5 23,7
Useful e󰀩ciency at 30% of nom. heat
output in low-temperature regime
(Tr 30 °C)
ƞ1% 97,5 97,6 97,6
Range-rated boiler: YES / NO YES YES YES

At full load elmax kW 0,474 0,474 0,474
At part load elmin kW 0,159 0,159 0,159
In stand-by mode PSB kW 0,007 0,007 0,007
Other items
Heat loss in stand-by Pstb kW 2,68 2,68 2,68
Emissions of nitrogen oxides ref. PCI (PCS) NOx Mg/kWh 48 (43) 56 (50) 58 (52)
Annual electricity consumption QHE GJ 349 424 653
For CH & DHW production boilers
Declarerd load prole ---
Energy e󰀩ciency in DHW production
mode ƞwh % - - -
Daily electricity consumption Qelec kWh - - -
Daily fuel consumptionl Qfuel kWh - - -
Inside sound power level Lwa dB (A) - - -
Annual electricity consumption AEC kWh - - -
Annual fuel consumption AFC GJ ---
󰀩
in DHW production mode ---
*

15
ENGLISH
Installation Instructions
3.2 - INSTALLATION STANDARDS
t must be installed by a professionally qualied technician, who
    
   󰀩   
the applicable technical standards.
3.3 - PREVENTIVE VERIFICATION AND
VERIFICATION AND ADJUSTMENT
OPERATIONS
NOTE!
For further details relating to the standards,
rules and regulations for safe installation of
the thermal unit, refer to the section “Tech-
nical Information” on the boiler page of the
www.unicalag.it website
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
indicated at page 2.
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
indicated at page 2.
3INSTALLATION INSTRUCTIONS
ATTENTION!
This boiler is intended solely for the use for

use is to be considered improper and there-
fore dangerous.
This boiler heats water at a temperature
lower than the atmospheric pressure boiling
temperature.
Before connecting the boiler, have professionally
qualied personnel:
a) Thoroughly wash all the piping of the sys-
tem to remove any residues or impurities
which could jeopardise proper operation
of the boiler, even from a hygienic point
of view.
b) Check that boiler is set up to oper-
ate with the available type of fuel.
This can be seen written on the package and
on the technical feature plate;
c) Check that the chimney/ue has an appropri-
ate draught, without any bottlenecks, and that
no exhausts from other appliances are insert-
ed, unless the ue has been implemented to
accommodate several utilities according to
specic standards and regulations in force.
Only after this check can the tting between
the boiler and chimney/ue be mounted;
ATTENTION!


the installation room, the appliance must
be protected suitably and must be able to
operate independently from the air in the
room.
ATTENTION!
Only mount the appliance on a closed wall, made
of non-ammable material, at, vertical so that
the minimum distances required for installation
and maintenance can be observed.
The boiler must be connected to a central heat-
ing system and/or domestic hot water supply
network compatible with its e󰀩ciency and output.
The boiler can be installed outdoors in a
partially protected place or at least in a place

action of the weather.
3.1 - GENERAL WARNINGS

16
ALKON 100 EXT - 115 EXT - 140 EXT
P
depth
L
width
(mm)
H
heigh
(mm)
Net
Weight
(kg)
Gross
Weight
(kg)
 840 1588 172 
3.4 - IMBALLO
The boiler ALKON 140 is delivered packaged in a cardboard
boxes 1 (boiler)
After having removed the appliance from the
packaging, make sure that the supply is complete
and undamaged.
The packaging elements (cardboard box, straps,
plastic bags, etc.) 
of children as they are potential sources of
danger.
Unical AG S.p.A. will not be held liable for damage
to persons, animals or objects due to failure to
comply with the instruction above. The packaging
elements (cardboard box, straps, plastic bags,
etc.) 
as they are potential sources of danger.
As well as the appliance, the packaging contains:
A DOCUMENTATION ENVELOPE
- User operating instructions booklet
- Instruction booklet for the installer and
maintenance engineer
- Certicate of conformity
- Gas conversion label
- Air inlet lter.
- Kit multifunction module SHC
- Outdoor sensor
- Sifone (*)

trap), this is not included in the forniture.
1
ATTENZIONE
La caldaia potrebbe essere danneggiata se
non correttamente fissata.
OBLIGATION!
wear protective gloves
- Only transport the boiler using appropriate
transport equipment
- Follow the transport instructions on the
packaging.

17
ENGLISH
Installation Instructions
Particular importance should be given to local regulations and
laws in terms of boiler room and especially the minimum distance
that must be kept clear around the boiler.
The installation must conform to the requirements contained in
the most recent regulations and laws in terms of boiler room,
installations of heating and production of hot water, ventilation,
chimneys suitable to discharge the products of combustion of
condensing boilers, and everything else applicable.
When choosing the place of the installation of the appliance,
follow the safety instructions below:
- Place the boiler in a partially protected place and protect
from frost.
- Avoid installation in rooms with a corrosive or very dusty
atmosphere.
- The appliance must only be installed on a vertical and solid
wall which can support its weight or on a support kit otional.
- For outdoor installation, in a partially protect place, follow
instruction in Par. 1.8.
3.5 - POSITIONING IN
BOILER ROOM
Observe the minimum distances of encumbrance
in order to perform the operations of normal
maintenance and cleaning.

18
SUPPORT FRAME (2) optional
2

19
ENGLISH
Installation Instructions

CONNECTION
To connect the ue gas exhaust pipe, local and national stand-
ards must be observed

gas pipe as well.
The boiler is type approved for the exhaust congurations listed
below:
B23P
TOTAL LENGTH (LS)
SINGLE Ø120
FROM [m] TO [m]
1 20
Connection to a combustion products evacuation pipe outside
the room; the combustion air is taken directly from the room
where the appliance is installed.
 
Boiler intended for connection to a combustion air intake and
combustion products evacuation system, approved and sold
separately


in force.
NOTE!
For more information
See Technical Info
from site indicated at pag. 2

systems

20
M FLOW 2’’
R RETURN 2’’
G GAS 1’’
Sc BOILER DRAIN
S.cond CONDENSATION DRAIN
Rc FILLING VALVE
Svs SAFETY VALVE DRAIN
Provide a drain pipe with funnel and a trap that
lead to a suitable drain, in correspondence of Svs.
This drainage must be controlled on sight.
If this precaution is not taken, triggering of the safe-
ty valve can cause damage to persons, animals
and objects, for which the manufacturer cannot
be held responsible.
Condensation outlet, pipe to be connected to the drain-
age system
3.7 - CONNECTION
Danger!
The gas connection must be carried out only by
a qualied installer who must respect and apply
that foreseen by relevant laws in force in the local
prescriptions of the supply company. Incorrect in-
stallation can cause damage to persons, animals
and objects for which the manufacturer cannot be
held responsible.

a) Do not operate electric switches,
the telephone or any other object that
may cause sparks;
b) Immediately open doors and
windows to create air current
to purify the room;
c) Shut the gas cocks.
Condensation drain
The boiler, during the combustion process, produces conden-
sation that, through pipe “A”, ows into the trap.
The condensation that forms inside the boiler ows into a suitable
drain via pipe “B”.
Danger!
Before commissioning the appliance:
- check that the trap is assembled
properly
- ll the trap and check that
the condensation is drained properly
If the appliance is used with an empty condensa-
tion drain trap, there is an intoxication hazard due
to the release of exhaust gasses..
The connection between the appliance and the do-
mestic waste system must be made in compliance
with the specic reference standards.
NOTE!
For more information
See Technical Info
from site indicated at pag. 2