Riello Caldariello condens 25 kis User manual

Caldariello

Condens 25 KIS

EN - INSTALLER AND USER MANUAL

SRB - PRIRUČNIK ZA MONTAŽU I KORIŠĆENJE

HR - PRIRUČNIK ZA MONTAŽU I KORIŠTENJE

SL - NAVODILA ZA VGRADITEV, PRIKLJUČITEV IN UPORABO

RO - MANUAL DE INSTALARE SI UTILIZARE

DE - HANDBUCH FÜR DIE MONTAGE UND BENUTZUNG

GR -

CALDARIELLO CONDENS 25 KIS

0694

0694CL6033

Caldariello Condens 25 KIS boilers comply with the essential requirements of the following Directives:

- Gas Appliance Directive 2009/142/EC

- EfciencyDirective92/42/EEC

- Electromagnetic Compatibility Directive 2004/108/EC

- Low Voltage Directive 2006/95/EC

and therefore bears the EC marking

RANGE RATED

This boiler can be adapted to the thermal requirements of the system; it is possible, in fact, to set the maximum boiler delivery for operation in

heat mode. Refer to the “Adjustments” chapter for the calibration settings.

Once the desired output has been set (maximum heating) transfer the value into the table given on the back cover.

For subsequent checks and adjustments, always refer to the set value.

0694

0694CL6033

Kotao Caldariello Condens 25 KISuskladujestemeljnimzahtjevimaizslijedećihDirektiva:

- Direktiva za plin 2009/142/CE

-Direktivaoučincima92/42/CEE

- Direktiva o elektromagnetskoj kompatibilnosti 2004/108/CE

- Direktiva o niskom naponu 2006/95/CE

stoga nosi oznaku CE

RANGE RATED

Ovajkotaomožeseprilagodititermičkimpotrebamainstalacije,odnosnomogućejepodešavanjemaksimalnogprotokazagrijanjesamogkotla.

Informacijeobaždarenjupotražiteupoglavlju“Podešavanja”.

Nakonštopodesiteželjenusnagu(najjačegrijanje),napišitevrijednostnaisporučenunaljepnicu.

Prilikomidućihkontrolaipodešavanjapogledajtepodešenuvrijednost.

0694

0694CL6033

Kotao Caldariello Condens 25 KISjeusaglašensaosnovnimzahtevimasledećihdirektiva:

- Direktivomzaplinskeuređaje2009/142/EC

- Direktivomoekasnosti92/42/EEC

- Direktivom o elektromagnetnoj kompatibilnosti 2004/108/EC

- Direktivomzaniskonaponskeuređaje2006/95/EC

zbogčegajenosilacCEoznake

RANGE RATED

Ovajkotaosemožeprilagodititoplotnimpotrebamasistema,naime,mogućejepodesitimaksimalankapacitetradagrejanjasamogkotla.Po-

gledajtepoglavlje“Podešavanja”uvezikalibrisanja.

Kadapodesiteželjenikapacitet(maksimalnogrejanje)unesitevrednostutabelukojasenalazinaposlednjojstrani.

Zanaknadneprovereipodešavanjapozvatisenapodešenuvrednost.

0694

0694CL6033

Kotel Caldariello Condens 25 KIS je skladen z bistvenimi zahtevami naslednjih direktiv:

- Direktiva o napravah na plinsko gorivo 2009/142/ES

- Direktiva o izkoristkih 92/42/EGS

- Direktivaoelektromagnetnizdružljivosti2004/108/ES

- Direktiva o nizkonapetostni opremi 2006/95/ES

zato je nosilec CE oznake

RANGE RATED

Takotelseprilagajapotrebamsistemapotoploti,največjoogrevalnozmogljivostsamegakotlajenamrečmogočenastavljatiglledenapotrebe

ogrevanja. O umerjanju kotla glejte poglavje “Nastavitve”.

Koželenomočnastavite(največjamočogrevanja),tovrednostvpišitevtabelo,kisenahajanazadnjistraninaslovnice.

Pri nadaljnjih kontrolah in nastavljanjih vzemite to nastavljeno vrednost kot osnovo.

SRB

0694

0694CL6033

RO Centrala Caldariello Condens 25 KISesteînconformitatecucerințeleesențialealeurmătoarelorDirective:

- Directiva de Gaz 2009/142/CE

- Directiva de Randament 92/42/CEE

-DirectivadeCompatibilitateElectromagnetică2004/108/CE

-DirectivadeJoasăTensiune2006/95/CE

astfel,poartămarcaCE

RANGE RATED

Centralapoateadaptatacererilordecalduraaleinstalatiei;esteposibil,dealtfel,sasetatiputereamaximadepeturulcentraleipentrufunctio-

narea in modul de incalzire.

Pentru operatiunile de reglare, faceti referire la capitolul “Reglaje”.

Odata ce ati setat puterea necesara (maxim incalzire), indicati valoarea pe coperta de la sfarsitul manualului, pentru o consultare ulterioara.

CALDARIELLO CONDENS 25 KIS

0694

0694CL6033

Der Kessel Caldariello Condens 25 KIS entspricht den wesentlichen Anforderungen der folgenden

Richtlinien:

- Gas-Richtlinie 2009/142/EG

- Wirkungsgradrichtlinie 92/42/EWG

- Richtlinie über die elektromagnetische Verträglichkeit 2004/108/EG

- Niederspannungsrichtlinie 2006/95/EG

und besitzt daher die CE-Kennung

GEWICHTET

DieserKesselkannandenWärmebedarfderAnlageangepasstwerden,d.h.esistmöglich,denmaximalenDurchussfürdenHeizbetrieb

des Kessels einzustellen. Für die Einstellung wird auf das Kapitel “Einstellungen” verwiesen. Nach dem Einstellen der gewünschten Leistung

(maximaleHeizleistung),denWertindieTabelleaufderRückseitedesUmschlagseintragen.

Für spätere Kontrollen und Einstellungen gilt der eingestellte Wert als Bezug.

GRECO

CALDARIELLO CONDENS 25 KIS

Installer’s-user’s manual .............................................................5

Boiler operating elements ........................................................116

Hydrauliccircuit.......................................................................118

Electric diagrams .....................................................................120

Circulator residual head ..........................................................125

Manual para el instalador-usuario .............................................17

Elementos funcionales de la caldera .......................................116

Circuito hidráulico ....................................................................118

Esquema eléctrico ..................................................................120

Altura de carga residual del circulador ....................................125

Manual do instalador-usuário ....................................................29

Elementos funcionais da caldeira ............................................116

CircuitoHidráulico....................................................................118

Diagrama Eléctrico ..................................................................120

Altura total de elevação residual da bomba circuladora ..........125

Telepítőikézikönyv-felhasználóikézikönyv...............................41

A kazán funkcionális alkatrészei ..............................................116

Vízkeringetés ..........................................................................118

Villamos kapcsolási rajz ..........................................................120

Akeringetőszivattyúmaradékemelőnyomása.......................125

DasHandbuchfürInstallateur-Benutzer..................................65

Die Arbeitselement von dem Kessel .......................................116

Der Wasserkreis .....................................................................118

Elektrische Schema ...............................................................120

Verfügbarer Pumpekraftaufwand ...........................................125

Navodila za vgraditelja-uporabo ...............................................77

Sestavni deli kotla ...................................................................116

Hidravličnanapeljava..............................................................118

Električnashema....................................................................120

Presežnitlakčrpalke...............................................................125

Priručnikzainstalatera-korisnika............................................89

Funkcionalni dijelovi kotla .......................................................116

Vodeni krug .............................................................................118

Električnashema.....................................................................120

Raspoloživadobavnavisinacirkulacijskecrpke......................125

Priručnikzainstalatera-korisnika.............................................101

Funkcionalni delovi kotla ..........................................................116

Vodeni krug ..............................................................................118

Električnašema.......................................................................120

Karakteristike cirkulacione pumpe ...........................................125

SRB

RO Manual instalator-utilizator ........................................................ 53

Elemenetele functionale ale centralei ......................................116

Circuit hidraulic ........................................................................118

Scheme electrice .....................................................................120

Presiune reziduala circulator ...................................................125

ENGLISH

1 - WARNINGS AND SAFETY

The boilers produced in our plants are built with great attention to

detail and every component is checked in order to protect users

and installers from injury. After working on the product, qualied

personnel must check the electrical wiring, in particular the stripped

part of conductors, which must not stick out from the terminal board,

avoiding possible contact with live parts of said conductor.

This instruction manual, together with the user manual, are integral

parts of the product: make sure it remains with the appliance, even

if it is transferred to another owner or user, or moved to another

heating system. In case of loss or damage, please contact your

local Technical Assistance Service for a new copy.

Boiler installation and any other assistance and maintenance opera-

tions must be carried out by qualied personnel according to the

provisions of the legislation in force.

The installer must instruct the user about the operation of the ap-

pliance and about essential safety regulations.

This boiler must only be used for the application it was designed

for. The manufacturer declines all contractual and non-contractual li-

ability for injury to persons or animals or damage to property deriving

from errors made during installation, adjustment and maintenance

and from improper use.

After removing the packaging, make sure the contents are in good

condition and complete. Otherwise, contact the dealer from whom

you purchased the appliance.

The safety valve outlet must be connected to a suitable collection

and venting system. The manufacturer declines all liability for any

damage caused due to any operation carried out on the safety valve.

Dispose of all the packaging materials in the suitable containers at

the corresponding collection centres.

Dispose of waste by being careful not to harm human health and

without employing procedures or methods which may damage the

environment.

During installation, inform the user to:

- in the event of water leaks, the water supply must be shut off and

the Technical Assistance Service must be contacted immediately.

- it is necessary to periodically check that the operating pressure of

the hydraulic system is above 1 bar. If necessary, reset the pres-

sure as indicated in the paragraph entitled “Filling the system”

- if the boiler is not used for a long time, the following operations

are recommended:

- turn the main switch of the appliance and the main switch of the

system to the “off” position

- close the fuel and water taps of the heating system

- drain the heating system to prevent freezing.

For safety, always remember that:

the boiler should not be used by children or unassisted disabled

people

it is dangerous to activate electrical devices or appliances (such as

switches, home appliances, etc.) if you smell gas or fumes. In the

event of gas leaks, ventilate the room opening doors and windows;

close the main gas tap; contact the Technical Assistance Service

or professionally qualied personnel immediately

do not touch the boiler while barefoot, or if parts of your body are

wet or damp

before any cleaning operations, disconnect the boiler from the mains

power supply by turning the two-position system switch and the main

control panel switch to the “OFF” position

do not modify safety and adjustment devices without the manufac-

turer's permission and relative instructions

do not pull, disconnect or twist the electric cables coming out of the

boiler, even when it is disconnected from the mains power supply

avoid covering or reducing the size of the ventilation openings in

the installation room

In some parts of the manual, some symbols are used:

WARNING = for actions requiring special care and adequate preparation

FORBIDDEN = for actions that MUST NOT be performed

INSTALLATION MANUAL

2 - DESCRIPTION

Caldariello Condens KIS is a Type C wall-mounted condensing boiler

designed for heating and production of domestic hot water: according to

the ue gas discharge device, the boiler is classied in categories B23P,

B53P, C13, C23, C33, C43, C53, C63, C83, C93, C13x, C33x, C43x,

C53x, C63x, C83x, C93x.

In conguration B23P and B53P (when installed indoors), the appliance

cannot be installed in bedrooms, bathrooms, showers or where there are

open replaces without a proper air ow. The room where the boiler is

installed must have proper ventilation.

In conguration C, the appliance can be installed in any type of room and

there are no limitations due to ventilation conditions or room volume.

3 - INSTALLATION

3.1 - Installation regulations

Installation must be carried out by qualied personnel, in accordance with

local regulations.

POSITION

The boiler has protection that guarantees correct operation with a tem-

perature range from 0°C to 60°C.

To take advantage of protective devices, the appliance must be able to

start up, since any lockout condition (for example, absence of gas or elec-

trical supply, or safety operation) deactivates the protective devices. If the

machine is left powered down for long periods in areas where tempera-

tures may fall below 0°C, and you do not want to drain the heating system,

you are advised to add a good quality antifreeze liquid to the primary cir-

cuit to protect it from freezing.

Carefully follow the manufacturer's instructions with regards not only the

percentage of antifreeze liquid to be used for the minimum temperature at

which you want to keep the machine circuit, but also the duration and dis-

posal of the liquid itself. For the domestic hot water part, we recommend

you drain the circuit.

The boiler component materials are resistant to ethylene glycol based an-

tifreeze liquids.

MINIMUM DISTANCES

In order to have access to the boiler to perform regular maintenance op-

erations, respect the minimum clearances foreseen for installation (g. 9).

For correct appliance positioning:

- do not place it on a cooker or other cooking device

- do not leave inammable products in the room where the boiler is installed

- heat sensitive walls (for example, wooden walls) must be protected with

proper insulation.

IMPORTANT

Before installation, wash all system piping carefully in order to remove any

residues that may impair the operation of the appliance.

Connect the drain manifold to a suitable drainage system (for details, refer

to chapter 3.5). The domestic hot water circuit does not need a safety

valve, but make sure that the pressure of waterworks does not exceed 6

bar. In case of doubts, install a pressure reducer. Prior to ignition, make

sure that the boiler is designed to operate with the gas available; this can

be checked by the message on the packaging and the adhesive label indi-

cating the gas type. It is very important to highlight that in some cases the

smoke pipes are under pressure and therefore, the connections of several

elements must be airtight.

3.2 Cleaning the system and characteristics of the

heating circuit water

In the case of a new installation or replacement of the boiler, it is neces-

sary to clean the heating system.

To ensure the device works well, top up the additives and/or chemical

treatments (e.g. antifreeze liquids, lming agents, etc.) and check the pa-

rameters in the table are within the values indicated.

do not leave inammable containers and substances in the instal-

lation room

keep packaging materials out of the reach of children

it is forbidden to obstruct the condensate drainage point

EN ENGLISH

CALDARIELLO CONDENS 25 KIS

3.3 Securing the boiler to the wall and hydraulic

connections

To secure the boiler to the wall, use the crossbar (g. 10) provided in the box.

The position and size of the hydraulic connections are indicated below:

A heating delivery 3/4”

B DHW outlet 1/2”

C gas connection 3/4”

D heating return line 3/4”

E DHW inlet 1/2”

3.4 Installation of the external sensor (g. 11)

The correct operation of the external sensor is fundamental for the good

operation of the climate control.

INSTALLING AND CONNECTING THE EXTERNAL SENSOR

The sensor must be installed on an external wall of the building to be

heated, observing the following indications:

it must be mounted on the side of the building most often exposed to winds

(the NORTH or NORTHWEST facing wall), avoiding direct sunlight; it must

be mounted about two thirds of the way up the wall;

it must not be mounted near doors, windows or air outlet points, and must

be kept away from smoke pipes or other heat sources.

The electrical wiring to the external sensor is made with a bipolar cable

with a section from 0.5 to 1 mm2 (not supplied), with a maximum length

of 30 metres. It is not necessary to respect the polarity of the cable when

connecting it to the external sensor. Avoid making any joints on this cable

however; if joints are absolutely necessary, they must be watertight and

well protected. Any ducting of the connection cable must be separated

from live cables (230V AC).

FIXING THE EXTERNAL SENSOR TO THE WALL

The sensor must be xed on a smooth part of the wall; in the case of ex-

posed brickwork or an uneven wall, look for the smoothest possible area.

Loosen the plastic upper protective cover by turning it anticlockwise.

After deciding on the best xing area of the wall, drill the holes for the 5x25

wall plug.

Insert the plug in the hole. Remove the board from its seat.

Fix the box to the wall, using the screw supplied.

Attach the bracket, then tighten the screw.

Loosen the nut of the cable grommet, then insert the sensor connection

cable and connect it to the electric clamp.

To make the electrical connection between the external sensor and the

boiler, refer to the “Electrical wiring” chapter.

Remember to close the cable grommet properly, to prevent any

humidity in the air getting in through the opening.

Put the board back in its seat.

Close the plastic upper protective cover by turning it clockwise. Tighten the

cable grommet securely.

3.5 Condensate collection

The system must be set up so as to avoid any freezing of the condensate

produced by the boiler (e.g. by insulating it). You are advised to install a

special drainage collection basin in polypropylene (widely available on

the market) on the lower part of the boiler (hole Ø 42), as shown in Fig.12.

Position the exible condensate drainage hose supplied with the boiler,

connecting it to the manifold (or another connection device which allows

inspection) avoiding creating any bends where the condensate could col-

lect and possibly freeze.

The manufacturer will not be liable for any damage resulting from the fail-

ure to channel the condensate, or from its freezing.

The drainage connection line must be perfectly sealed, and well protected

from the risk of freezing.

Before the initial start-up of the appliance, check the condensate will be

properly drained off.

Parameters Unit of

measurement Hot water

circuit Filling

water

pH value 7–8 -

Hardness °F - 15–20

Appearance

- clear

3.6 Gas connection

Before connecting the appliance to the gas supply, check that:

- national and local installation regulations are complied with

- the gas type is the one suitable for the appliance

- the piping is clean.

The gas pipe must be installed outdoors. If the pipe goes through the wall,

it must go through the central opening, in the lower part of the template.

It is advisable to install a lter of suitable dimensions on the gas line if the

distribution network contains solid particles.

Once the appliance has been installed, check the connections are sealed

according to current installation regulations.

3.7 Electrical wiring

To access the electrical wiring, proceed as follows:

To access the terminal board:

- turn off the main switch on the system

- undo the xing screws (D) on the housing (g. 13)

- move the base of the housing forwards and then upwards to unhook it

from the chassis

- undo the xing screws (E) from the instrument panel (g. 14)

- lift then turn the instrument panel towards you (g. 15)

- detach the cover on the board casing (g. 16)

- insert the cable of any room thermostat to be tted.

The room thermostat must be connected as indicated in the wiring dia-

gram.

Low voltage room thermostat input (24V DC).

It must be connected to the mains power supply via a double-pole isolating

switch with minimum contact gap of 3.5 mm (EN 60335/1 - category 3).

The appliance operates with an alternating current of 230 Volt/50 Hz and

an electrical output of 110 W (and complies with the standard EN 60335-1).

It is obligatory to ensure the earth connection is safe, in compliance with

the current directives.

The installer is responsible for ensuring the appliance is correctly

earthed; the manufacturer will not be liable for any damage resulting

from an incorrect or missing earth connection

It is also advisable to respect the live-neutral connection (L-N).

The earth conductor must be a couple of cm longer than the others.

The boiler can operate with a phase-neutral or phase-phase supply.

For power supplies that are not earthed, it is necessary to use an isolating

transformer with earthed secondary.

Do not use gas and/or water pipes to earth electrical appliances.

Use the power cable supplied to connect the boiler to the mains power

supply.

If the power cable needs to be replaced, use a cable of the HAR H05V2V2-

F type, 3 x 0.75 mm2, with a maximum external diameter of 7 mm.

3.8 Filling the heating system

Once the hydraulic connections have been carried out, ll the heating sys-

tem.

This operation must be carried out with cold system, according to the fol-

lowing instructions (g. 17):

- open the automatic air vent by turning the plug on the lower valve (A)

and upper valve (D) two or three turns, to bleed the air continuously,

leave valve plugs A-D open

- ensure that the cold water inlet tap is open

- open the lling tap (B) until the pressure indicated by the water gauge is

between 1 and 1.5 bar

- close the lling tap.

Note: the boiler is bled automatically via the two automatic bleed valves

A and D, positioned on the circulator and inside the air distribution box

respectively.

If you encounter problems bleeding the boiler, proceed as described in

paragraph 3.11.

3.9 Draining the heating system

Before starting to drain the system, switch off the electrical supply by turn-

ing off the main switch of the system.

Close the shut-off devices on the heating system

Manually loosen the system drain valve (C)

3.10 Draining the domestic hot water system

When there is risk of frost, the domestic hot water system must be emptied

in the following way:

- close the main tap of the water mains

- open all the hot and cold water taps

- drain the lowest points.

ENGLISH

3.11 Bleeding the air from the heating circuit and boiler

During the initial installation phase, or in the event of extraordinary main-

tenance, you are advised to perform the following sequence of operations:

1. Use a CH11 spanner to open the manual air vent valve located above

the air distribution box (g.18). Connect the tube (supplied with the

boiler) to the valve, so the water can be drained into an external con-

tainer.

2. Open the system lling tap located on the hydraulic unit and wait until

water begins to drain out of the valve.

3. Switch on the electricity supply to the boiler, leaving the gas tap turned

off.

4. Activate a heat request via the room thermostat or the remote control

panel, so that the 3-way valve goes into heating mode.

5. Activate a DHW request as follows:

instantaneous boilers: open a tap, for 30 seconds every minute so

that the three-way valve switches from heating to domestic hot water

and vice versa about ten times. In this situation, the boiler will go into

alarm mode due to the absence of gas, so it must be reset every time

this happens.

heat-only boilers connected to an external storage tank: activate the

thermostat on the storage tank;

6. Carry on with the sequence until only water leaks out of the manual

air vent valve, and the air ow has stopped. Close the manual air vent

valve.

7. Check the system pressure level is correct (the ideal level is 1 bar).

8. Turn off the system lling tap.

9. Turn on the gas tap and ignite the boiler.

3.12 Flue gas discharge and air suction

Observe local legislation regarding ue gas discharge.

Flue gases are discharged

from a centrifugal fan located inside the combus-

tion chamber and the

control board

constantly checks that this is working

correctly. The boiler is supplied without the ue gas discharge/air suction kit,

since it is possible to use the accessories for appliance with a forced draught

sealed chamber that better adapts to the installation characteristics.

For ue gas extraction and the restoration of boiler combustion air, it is essen-

tial to only use certied piping. Connection must be carried out correctly as in-

dicated in the instructions supplied as standard with the ue gas

accessories.

Multiple appliances can be connected to a single smoke pipe provided that

each is a sealed chamber-type appliance.

The boiler is a Type C appliance (sealed chamber), and must therefore

have a safe connection to the ue gas discharge pipe and to the combus-

tion air suction pipe; these both carry their contents outside, and are es-

sential for the operation of the appliance.

POSSIBLE OUTLET CONFIGURATIONS (FIG. 24)

B23P/B53P

Suction indoors and discharge outdoors

C13-C13x Discharge via concentric wall outlet. The pipes may leave the

boiler independently, but the outlets must be concentric or sufciently close

together to be subjected to similar wind conditions (within 50 cm)

C23 Discharge via concentric outlet in common smoke pipe (suction and

discharge in the same pipe)

C33-C33x Discharge via concentric roof outlet. Outlets as for C13

C43-C43x Discharge and suction in common separate smoke pipes, but

subjected to similar wind conditions

C53-C53x Separate discharge and suction lines on wall or roof and in ar-

eas with different pressures. The discharge and suction lines must never

be positioned on opposite walls

C63-C63x Discharge and suction lines using pipes marketed and certied

separately (1856/1)

C83-C83x Discharge via single or common smoke pipe and wall suction

line

C93-C93x Discharge on roof (similar to C33) and air suction from a single

existing smoke pipe

“FORCED OPEN” INSTALLATION (TYPE B23P/B53P)

Flue gas discharge pipe ø 80 mm (g. 20)

The ue gas discharge pipe can be directed to the most suitable direction

according to installation requirements. For installation, follow the instruc-

tions supplied with the kit.

In this conguration, the boiler is connected to the ue gas discharge pipe

(ø 80 mm) through an adaptor (ø 60-80 mm).

In this case, the combustion air is picked up from the boiler instal-

lation room (which must be a suitable technical room with proper

ventilation).

Uninsulated ue discharge outlet pipes are potential sources of

danger.

Arrange the ue gas discharge pipe so it slopes by 1% towards the

boiler.

The boiler automatically adapts the purging to the type of installation

and the length of the pipe.

maximum length of the ue gas

discharge pipe ø 80 mm pressure drop

45° bend 90° bend

0.5m

70 m 0.8m

“SEALED” INSTALLATION (TYPE C)

The boiler must be connected to concentric or twin ue gas discharge

pipes and air suction pipes, both leading outdoors. The boiler must not be

operated without them.

Concentric pipes (ø 60-100 mm) (g.21)

The concentric pipes can be placed in the most suitable direction accord-

ing to installation requirements, complying with the maximum lengths in-

dicated in the table.

Arrange the ue gas discharge pipe so it slopes by 1% towards the

boiler.

Non-insulated outlet pipes are potential sources of danger.

The boiler automatically adapts the purging to the type of installation

and the length of the pipe.

Do not obstruct or choke the combustion air suction pipe in any

way.

For installation, follow the instructions supplied with the kit.

Vertical

straight length *

concentric pipe ø 60-100 mm

pressure drop

45° bend 90° bend

0.5 m

5.85 m 0.85 m

Horizontal

straight length *

concentric pipe ø 60-100 mm

pressure drop

45° bend 90° bend

0.5 m

6.85 m 0.85 m

*“Straight length” means without bends, drainage terminals or joints.

If the boiler must be installed with drainage below, use the special elbow

(kit available on request – see Parts Catalogue).

In this type of installation, the inner pipe of the elbow must be cut at the

point shown in g. 22 to allow the elbow itself to be inserted more easily

into the ue gas discharge on the boiler.

Concentric pipes (ø 80-125)

For this conguration, the special adaptor kit must be tted. The concen-

tric pipes can face in the direction most suitable for installation require-

ments. For installation, follow the instructions supplied with the specic

condensing boilers kits.

straight length

concentric pipe ø 80-125 mm

pressure drop

45° bend 90° bend

1.0 m

15.3 m 1.5 m

*“Straight length” means without bends, drainage terminals or joints.

CALDARIELLO CONDENS 25 KIS

Twin pipes (ø 80 mm) (g. 23)

The twin pipes can face in the direction most suited to the installation

requirements.

For installation, follow the instructions supplied with the specic accessory

kit for condensing boilers.

Arrange the ue gas discharge pipe so it slopes by 1% towards the

boiler.

The boiler automatically adapts the purging to the type of installation

and the length of the pipes. Do not obstruct or choke the pipes in

any way.

Refer to the graphs to nd the maximum lengths of the single pipe.

The use of longer pipes reduces the boiler output.

maximum straight length

twin pipes ø 80 mm

pressure drop

45° bend 90° bend

0.5 m 0.8 m

45+45 m

*“Straight length” means without bends, drainage terminals or joints.

Suction pipe length (m)

Discharge pipe length (m)

0510 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105 110

ENGLISH

4.1 Switching on the appliance

Every time the appliance is powered up, a series of data is shown on the

display including the ue gas sensor meter reading (-C- XX) (see para-

graph 4.3 - fault A09); the automatic purge cycle then starts, lasting around

2 minutes. During this phase, the three LEDs light up alternately and the

symbol “ ” is shown on the monitor (g. 25).

To interrupt the automatic purge cycle proceed as follows:

access the electronic board by removing the housing, turning the instru-

ment panel towards you and opening the board casing (g. 13-14-15)

Then:

- press the CO button (g. 26).

Live electrical parts (230 V AC).

To start up the boiler it is necessary to carry out the following operations:

- power the boiler

- open the gas tap to allow the ow of fuel

- set the room thermostat to the required temperature (~20°C)

- turn the mode selector to the desired position:

Winter mode: by turning the mode selector (g. 27) in the area divided into

segments, the boiler provides domestic hot water and heating. If there is

a heat request, the boiler switches on and the boiler status indicator LED

lights up with a xed green light. The digital monitor indicates the heating

water temperature (g. 29).

If there is a domestic hot water request, the boiler switches on and the

boiler status indicator LED lights up with a xed green light.

The display indicates the domestic hot water temperature (g. 30).

Adjustment of the heating water temperature

To adjust the heating water temperature, turn the knob with symbol (g.

27) clockwise to increase water temperature and anti-clockwise to lower it.

Summer mode: turning the mode selector to the summer mode symbol

(g. 28) activates the traditional domestic hot water only function.

If there is a domestic hot water request, the boiler switches on and the

boiler status indicator LED lights up with a xed green light. The digital

monitor indicates the domestic hot water temperature (g.30).

Pre-heating (faster hot water): turning the domestic hot water tempera-

ture adjustment knob to the symbol (g. 31) activates the pre-heating

function. Bring the domestic hot water temperature adjustment knob back

to the required position.

This function keeps the water in the domestic hot water exchanger hot, to

reduce standby times when a request is made.

When the pre-heating function is enabled, the yellow LED next to the

symbol is lit. The monitor indicates the delivery temperature of the heating

water or the domestic hot water, according to the current request. During

burner ignition following a pre-heating request, the monitor indicates the

symbol. To deactivate the pre-heating function, rotate the domestic hot

water temperature adjustment knob back to the symbol. The yellow

LED will switch off. Bring the domestic hot water temperature adjustment

knob back to the required position.

This function cannot be activated when the boiler is OFF: mode selector

(g.32) to (OFF).

Adjustment of the domestic hot water temperature

To adjust the domestic hot water temperature (bathrooms, shower, kitchen,

etc.), turn the knob with the symbol (g. 33) clockwise to increase water

temperature and anti-clockwise to lower it (min. value 37°C - max. value

60°C). On the control panel, the green LED ashes with ON for 0.5 sec-

onds, OFF for 3.5 seconds.

The boiler is standby status until, after a heat request, the burner switches

on and the indicator LED turns xed green to indicate ame presence.

The boiler continues to operate until the temperatures set on the boiler are

reached, or the heat request is met; after which it goes back on standby.

If the red LED indicator near the symbol (g. 34) on the control panel

lights up, this means the boiler is in temporary shutdown status (see the

chapter on Light signals and faults).

The digital monitor indicates the fault code detected.

Automatic Temperature Control System function (C.T.R.) g. 35

Setting the heating water temperature selector in the zone marked by

symbols in bold type, activates the automatic temperature control system

(frequency 0.1 sec. on; then 0.1 sec. off; for 0.5 seconds): according to

the temperature set on the room thermostat and the time taken to reach

it, the boiler varies automatically the heating water temperature reducing

the operating time, allowing greater ease of operation and energy saving.

On the control panel, the green LED ashes ON for 0.5 seconds, OFF for

3.5 seconds.

Reset function

To restore operation, set the mode selector to (g. 32), wait 5-6 seconds

then set the mode selector to the required position, checking that the red

indicator light is OFF.

At this point the boiler will automatically start and the red lamp switches

on in green.

4 - SWITCHING ON AND OPERATION

N.B. If the attempt to reset the appliance does not activate operation, con-

tact the Technical Assistance Service.

4.2 Switching off

Temporary switch-off

In case of absence for short periods of time, set the mode selector (g.

32) to (OFF).

In this way (leaving the electricity and fuel supplies enabled), the boiler is

protected by the following systems:

Anti-frost device: when the temperature of the water in the boiler falls below

5°C, the circulator and, if necessary, the burner are activated at minimum

output levels to bring the water temperature back to the values for safety

(35°C). During the anti-frost cycle, the symbol (g. 36) appears on the

digital monitor.

Circulator anti-blocking function: an operation cycle is activated every 24

hours.

Switching off for long periods

In case of absence for long periods of time, set the mode selector (g. 32)

to “ ” (OFF). Turn the main system switch OFF.

Close the fuel and water taps of the heating and domestic hot water sys-

tem.

In this case, anti-frost device is deactivated: drain the systems, in case of

risk of frost.

4.3 Light signals and faults

The control panel has three LEDs that indicate the boiler operating status:

Green LED

Flashing

Flashing (0.5 seconds on, then 3.5 seconds off) = boiler in standby, there

is no ame.

Flashing (0.5 seconds on, then 0.5 seconds off) = temporary shutdown of

the appliance due to the following automatic-reset faults:

- water pressure switch (standby time 10 minutes approximately)

- transitory waiting for ignition.

In this phase, the boiler waits for restoration of working conditions. If after

the standby time, the boiler does not restore regular operation, the shut-

down will be permanent and the signal light will be red.

Fast ashing (0.1 second on; then 0.1 second off; for 0.5 seconds) = Auto-

matic Temperature Control System input/output function (g. 35).

Setting the heating water temperature selector in the zone marked by

symbols in bold type (temperature value from 55 to 65°C) activates the

Automatic Temperature Control System: the boiler varies the output tem-

perature according to the closing signal of the room thermostat.

When the temperature set with the heating water temperature selector is

reached, a 20-minute countdown begins. If during this period the room

thermostat still requests heat, the value of the set temperature automati-

cally increases by 5°C.

When the new value is reached, other 20-minute countdown begins. If dur-

ing this period the room thermostat still requests heat, the value of the set

temperature automatically increases by 5°C. This new temperature value

is the result of the temperature set manually with the heating water tem-

perature selector and the increase of +10°C of the Automatic Temperature

Control System (C.T.R.) function.

After the second cycle, the temperature value is not increased any further

(set temperature +10°C) and cycle described above is repeated until the

room thermostat request is met.

Fixed green

there is ame, the boiler works regularly.

Red LED

If the red LED lights up, this indicates the presence of a fault; the monitor

shows a code interpreted as follows:

A 01 ame lockout (xed red LED + flame lockout icon )

A 02 limit thermostat operation (ashing red LED)

A 03 fan fault (xed red LED)

A 04 water pressure switch after transitory phase (xed green + red LEDs

+ lling icon “ ”)

A 06 domestic hot water NTC sensor (ashing red+green LEDs)

A 07 delivery/return differential or heating NTC sensor (xed red LED)

A 08 delivery/return differential or return NTC sensor (xed red LED)

A 09 ue gas sensor heat safety operation (xed red LED)

A 09

ue gas NTC sensor or exchanger cleaning (ashing red+green LEDs)

A 77 low temperature thermostat operation / generic alarm (ashing

red+green LEDs)

CALDARIELLO CONDENS 25 KIS

To restore operation (deactivate alarms):

Faults A 01-02-03

Position the function selector to (OFF), wait 5-6 seconds then set it to

the required position.

If the reset attempts do not reactivate the boiler, contact the Technical As-

sistance Centre.

Fault A 04

In addition to the fault code, the digital display shows the symbol .

Check the pressure value indicated by the water gauge:

if it is less than 0.3 bar, position the function selector to (OFF) and

adjust the lling tap (B-g. 17) until the pressure reaches a value between

1 and 1.5 bar.

Then position the mode selector to the desired position.

The boiler will perform one purge cycle lasting approximately 2 minutes.

If pressure drops are frequent, request the intervention of the Technical

Assistance Service.

Fault A 06

The boiler operates normally but cannot reliably maintain a constant do-

mestic hot water temperature, which remains set at around 50°C. Contact

the Technical Assistance Centre.

Fault A 07

Contact the Technical Assistance Centre.

Fault A 08

Contact the Technical Assistance Centre.

Fault A 09 with xed red LED lit

Position the function selector to (OFF), wait 5-6 seconds then set it to

the required position.

If the reset attempts do not reactivate the boiler, request the intervention of

the Technical Assistance Service.

Fault A 09 with ashing red and green LEDs

The boiler is equipped with an auto-diagnostic system which, based on the

total number of hours in certain operating conditions, can signal the need

to clean the primary exchanger (alarm code 09 with ashing red and green

LEDs and ue gas meter >2,500).

Once the cleaning operation has been completed, using the special kit

supplied as an accessory, the total hour meter will need to be reset to zero

as follows:

- switch off the power supply

- remove the housing

- loosen the xing screw then turn the instrument panel

- loosen the xing screws on the cover (F) to access the terminal board

(g. 16)

- while the boiler is powered up, press and hold the CO button (g. 26) for

at least 4 seconds, to check the meter has been reset, power down then

power up the boiler; the meter reading is shown on the monitor after the

“-C-” sign.

Live electrical parts (230 V AC).

Note: the meter resetting procedure should be carried out after each in-

depth cleaning of the primary exchanger or if this latter is replaced. To

check the status of the total hour meter, multiply the reading by 100 (e.g.

reading of 18 = 1800 total hours; reading of 1 = 100 total hours).

The boiler continues to operate normally even when the alarm is activated.

Fault A77

This is an automatic-reset fault, if the boiler does not restart, contact the

Technical Assistance Centre.

Fixed yellow LED

Pre-heating function activated

Flashing yellow LED

Combustion analysis in progress.

4.4 Boiler conguration

There is a series of jumpers (JPX) available on the electronic board which

enable the boiler to be congured.

To access the board, proceed as follows:

- turn off the main switch on the system

- loosen the xing screws on the housing, move the base of the housing

forwards and then upwards to unhook it from the chassis

- undo the xing screws (E) from the instrument panel (g. 14)

- loosen the screws (F - g. 16) to remove the cover of the terminal board

(230V)

JUMPER JP7 - g. 37:

preselection of the most suitable heating temperature adjustment eld ac-

cording to the installation type.

Jumper not inserted - standard installation

Standard installation 40-80°C

Jumper inserted - oor installation

Floor installation 20-45°C.

In the manufacturing phase, the boiler is congured for standard installa-

tions.

JP1

Calibration (Range Rated)

JP2 Reset heating timer

JP3 Calibration (see paragraph on “Adjustments”)

JP4 Absolute domestic hot water thermostat selector

JP5 Do not use

JP6 Enable night-time compensation function and continuous pump (only

with external sensor connected)

JP7 Enable management of low temperature/standard installations (see

above)

JP8 Do not use

4.5 Setting the thermoregulation (graphs 1-2-3)

The thermoregulation only operates with the external sensor connected;

once installed, connect the external sensor (accessory available on request)

to the special terminals provided on the boiler terminal board (g. 5).

This enables the THERMOREGULATION function.

Selecting the compensation curve

The compensation curve for heating maintains a theoretical temperature

of 20°C indoors, when the external temperature is between +20°C and

-20°C. The choice of the curve depends on the minimum external temper-

ature envisaged (and therefore on the geographical location), and on the

delivery temperature envisaged (and therefore on the type of system). It is

carefully calculated by the installer on the basis of the following formula:

Tshift = 30°C standard installations

25°C oor installations

If the calculation produces an intermediate value between two curves, you

are advised to choose the compensation curve nearest the value obtained.

Example: if the value obtained from the calculation is 1.3, this is between

curve 1 and curve 1.5. Choose the nearest curve, i.e. 1.5.

Select the KT using trimmer P3 on the board (see multiwire wiring dia-

gram).

To access P3:

- remove the housing,

- loosen the xing screw on the instrument panel

- turn the instrument panel towards you

- loosen the xing screws on the terminal board cover

- unhook the board casing

Live electrical parts (230 V AC).

The KT values which can be set are as follows:

standard installation: 1.0-1.5-2.0-2.5-3.0

oor installation 0.2-0.4-0.6-0.8

and these are displayed for approximately 3 seconds after rotation of the

trimmer P3.

TYPE OF HEAT REQUEST

Boiler connected to room thermostat (JUMPER 6 not inserted)

The heat request is made by the closure of the room thermostat contact,

while the opening of the contact produces a switch-off. The delivery tem-

perature is automatically calculated by the boiler, although the user may

modify the boiler settings. Using the interface to modify the HEATING, you

will not have the HEATING SET-POINT value available, but a value that

you can set as preferred between +5 and -5°C. The modication of this

value will not directly modify the delivery temperature, but will automati-

cally affect the calculation that determines the value of that temperature,

altering the reference temperature in the system (0 = 20°C).

Boiler connected to a programmable timer (JUMPER JP6 inserted)

With the contact closed, the heat request is made by the delivery sen-

sor, on the basis of the external temperature, to obtain a nominal indoor

temperature on DAY level (20°C). With the contact open, the boiler is not

switched off, but the weather curve is reduced (parallel shift) to NIGHT

level (16°C).

This activates the night-time function.

The delivery temperature is automatically calculated by the boiler, al-

though the user may modify the boiler settings.

Using the interface to modify the HEATING, you will not have the HEAT-

ING SET-POINT value available, but a value that you can set as preferred

between +5 and -5°C.

The modication of this value will not directly modify the delivery tempera-

ture, but will automatically affect the calculation that determines the value

of that temperature, altering the reference temperature in the system (0 =

20°C for DAY level, and 16°C for NIGHT level).

envisaged delivery T. - Tshift

KT= 20- min. envisaged external T.

ENGLISH

4.6 Adjustments

The boiler has already been adjusted by the manufacturer during produc-

tion. If the adjustments need to be made again, for example after extraor-

dinary maintenance, replacement of the gas valve, or conversion from

methane gas to LPG, observe the following procedures.

The adjustment of the maximum and minimum output, and of the maxi-

mum and minimum heating and of slow switch-on, must be made strictly in

the sequence indicated, and only by qualied personnel only:

- disconnect the boiler from the power supply

- turn the heating water temperature selector to its maximum

- loosen the xing screws (E) on the instrument panel (g. 14)

- lift then turn the instrument panel towards you

- loosen the xing screws on the cover (F) to access the terminal board

(g. 16)

- insert the jumpers JP1 and JP3 (g. 39)

- power up the boiler

The three LEDs on the instrument panel ash simultaneously and the dis-

play shows “ADJ” for approximately 4 seconds

Next change the following parameters:

1 - Domestic hot water/absolute maximum

2 - Minimum

3 - Heating maximum

4 - Slow switch-on

as follows:

- turn the heating water temperature selector to set the required value

- press the CO button (g. 26) and then skip to the calibration of the next

parameter.

Live electrical parts (230 V AC).

The following icons light up on the monitor:

1. during domestic hot water/absolute maximum calibration

2. during minimum calibration

3. during heating maximum calibration

4. during slow switch-on calibration

End the procedure by removing jumpers JP1 and JP3 to store these set

values in the memory.

THE function can be ended at any time without storing the set values in the

memory and retaining the original values as follows:

- remove jumpers JP1 and JP3 before all 4 parameters have been set

- set the function selector to (OFF/RESET)

- cut the power supply

- waiting for 15 minutes after it is connected.

Calibration can be carried out without switch on the boiler.

By turning the heating selection knob, the monitor automatically

shows the number of rotations, expressed in hundreds (e.g. 25 =

2,500 rpm).

GAS VALVE CALIBRATION

- Connect the boiler to the power supply

- Open the gas tap

- Set the function selector to (OFF/RESET) (monitor off)

- Loosen the screws (E), remove the housing, then lower the instrument

panel towards you (g. 14)

- Loosen the xing screws on the cover (F) to access the terminal board

(g. 16)

- Press the CO button (g. 26)

Live electrical parts (230 V AC).

- Wait for burner ignition.

The display shows “ACO” and the yellow LED ashes. The boiler oper-

ates at maximum heat output.

The “combustion analysis” function remains active for a limited time (15

min); if a delivery temperature of 90°C is reached, the burner is switched

off. It will be switched back on when this temperature drops below 78°C.

- Insert the analyser probe in the ports provided in the air distribution box,

after removing the screws from the cover (g. 40)

- Press the “combustion analysis” button a second time to reach the

number of rotations corresponding to the maximum domestic hot water

output (table 1); the yellow LED continues to ash while the red LED is

xed

- Check the CO2 value: (table 3) if the value does not match the value

given in the table, use the gas valve maximum adjustment screw

- Press the “combustion analysis” button a third time to reach the number

of rotations corresponding to the minimum output (table 2); the yellow

LED continues to ash while the green LED is xed

- Check the CO2 value: (table 4) if the value does not match the value

given in the table, use the gas valve minimum adjustment screw

- To exit the “combustion analysis” function, turn the control knob

- Remove the ue gas probe and ret the plug

- Close the instrument panel and ret the housing.

The “combustion analysis” function is automatically deactivated if the

board triggers an alarm. In the event of a fault during the combustion anal-

ysis cycle, carry out the reset procedure.

table 1

MAXIMUM NUMBER OF

FAN ROTATIONS

METHANE

GAS (G20)

LIQUID GAS

(G31)

heating - DHW 49 - 61 49 - 61 rpm

table 3

Max. CO2

METHANE

GAS (G20)

LIQUID GAS

(G31)

9.0 10.5 %

table 4

Min. CO2

METHANE

GAS (G20)

LIQUID GAS

(G31)

9.5 10.5 %

table 2

MINIMUM NUMBER OF

FAN ROTATIONS

METHANE

GAS (G20)

LIQUID GAS

(G31)

14 14 rpm

The boiler is supplied with the adjustments shown in the table. Depending on plant engineering requirements or regional ue gas emission limits it is,

however, possible to modify this value, referring to the graphs below.

HTG curve (Qnheating) - 25kW COs.a. curve (Qnheating) - 25kW

Heat output (kW) Heat output (kW)

Fan rotations (rpm)

CO emissions s.a. (p.p.m.)

1200

1600

2000

2400

2800

3200

3600

4000

4400

4800

5200

5600

6000

6400

46810 12 14 16 18 20 22 24 26

100

110

120

130

140

150

160

170

180

190

200

468101214161820222426

CALDARIELLO CONDENS 25 KIS

4.7 Gas conversion (g. 41-42)

Gas conversion from one family of gases to another can also be easily

performed when the boiler is installed.

This operation must be carried out by professionally qualied personnel.

The boiler is designed to operate with methane gas (G20) according to the

product label.

It is possible to convert the boiler to propane gas, using the special kit.

For disassembly, refer to the instructions below:

- switch off the power supply to the boiler and close the gas tap

- remove in sequence: housing and air distribution box cover

- remove the xing screw from the instrument panel

- unhook and turn the instrument panel forwards

- remove the gas valve (A)

- remove the nozzle (B) inside the gas valve and replace it with the nozzle

from the kit

- ret the gas valve

- remove the silencer from the mixer

- open the two half-shells by prising apart the corresponding hooks (C)

- replace the air diaphragm (D) in the silencer

- ret the air distribution box cover

- re-power the boiler and turn on the gas tap

Adjust the boiler as described in the chapter entitled “Adjustments” with

reference to the information on LPG.

Conversion must be carried out by qualied personnel.

Once the conversion is complete, afx the new identication

label supplied in the kit.

5 - MAINTENANCE

The appliance must be systematically controlled at regular intervals to

make sure it works correctly and efciently and conforms to legislative pro-

visions in force.

The frequency of controls depends on the conditions of installation and

usage, it being anyhow necessary to have a complete check carried out by

authorized personnel from the Servicing Centre every year.

- Check and compare the boiler’s performance with the relative specica-

tions. Any cause of visible deterioration must be immediately identied

and eliminated.

- Closely inspect the boiler for signs of damages or deterioration, particu-

larly with the drainage and aspiration system and electrical apparatus.

- Check and adjust – where necessary – all the burner’s parameters.

- Check and adjust – where necessary – the system’s pressure.

- Analyze combustion. Compare results with the product’s specication.

Any loss in performance must be identied and corrected by nding and

eliminating the cause.

- Make sure the main heat exchanger is clean and free of any residuals or

obstruction.

- Check and clean – where necessary – the condensation tray to make

sure it works properly.

IMPORTANT: always switch off the power to the appliance and close the

gas by the gas cock on the boiler before carrying out any maintenance and

cleaning jobs on the boiler.

Do not clean the appliance or any latter part with ammable substances

(e.g. petrol, alcohol, etc.).

Do not clean panelling, enamelled and plastic parts with paint solvents.

Panels must be cleaned with ordinary soap and water only.

The ame side of the burner is made of state-of-the-art material.

Being fragile:

- be particularly careful when handling, mounting or dismantling the bur-

ner and adjacent components (e.g. electrodes, insulation panelling etc.)

- avoid direct contact with any cleaning appliance (e.g. brushes, aspira-

tors, blowers, etc.).

This component does not need any maintenance, please do not remove it

from its housing, save where the O-ring may have to be replaced.

The manufacturer declines all responsibility in cases of damages due to

failing to observe the above.

5.1 Checking the combustion parameters

To carry out the combustion analysis, proceed as follows:

- set the main switch of the installation to the “OFF” position

- loosen the xing screws (D) on the housing (g. 13)

- move the base of the housing forwards and then upwards to unhook it

from the chassis

- loosen the xing screws (E) on the instrument panel (g. 14)

- lift then turn the instrument panel towards you

- loosen the xing screws on the cover (F) to access the terminal board

(g. 16)

- Press the “CO” button (g. 26)

5.2 Serial number

Domestic hot water function

Heating function

Qn Nominal heat delivery

Pn Nominal heat output

IP Degree of Protection

Pmw Maximum DHW pressure

Pms Maximum heating pressure

T Temperature

ŋ Performance

D Specic ow rate

NOx NOx class

Live electrical parts (230 V AC).

- Wait for burner ignition. The display shows “ACO”, the yellow LED ash-

es and the boiler operates at maximum heat output.

- insert the analyser probe in the ports provided in the air distribution box,

after removing the screws from the cover (g. 40)

- check that the CO2 values match those given in the table, if the value

shown is different, change it as indicated in the chapter entitled “Gas

valve calibration”.

- perform the combustion check.

Then:

- remove the analyser probe and close the sockets for combustion analy-

sis with the special screw

- close the instrument panel and ret the housing

The ue gas analysis probe must be fully inserted as far as

possible.

IMPORTANT

Even during the combustion analysis phase, the function that switches the

boiler off when the water temperature reaches the maximum limit (about

90°C) remains enabled.

Pmw = bar T= 60 °C

Qn =

00000000000

230 V ~ 50 Hz W

****

D: l/min

Gas type: Gas category:

Pms = bar T= 90 °C

Condensing Boiler

Pn =

Pm Pn

50-30 C

80-60 C 80-60 C

ENGLISH

USER GUIDE

1a GENERAL WARNINGS AND SAFETY

The instruction manual is an integral part of the product and it must there-

fore be kept carefully and must accompany the appliance; if the manual

is lost or damaged, another copy must be requested from the Technical

Assistance Service.

Boiler installation and any other assistance and maintenance opera-

tions must be carried out by qualied personnel according to the

provisions of local legislation.

For installation, it is advisable to contact specialised personnel.

The boiler must only be used for the application foreseen by the

manufacturer. The manufacturer shall not be liable for any damage

to persons, animals or property due to errors in installation, calibra-

tion, maintenance or due to improper use.

The safety and automatic adjustment devices must not be modied,

during the system life cycle, by the manufacturer or supplier.

This appliance produces hot water, therefore it must be connected

to a heating system and/or a domestic hot water mains, compatible

with its performance and output.

In case of water leakage, close the water supply and contact the

Technical Assistance Service immediately.

In case of absence for long periods time, close the gas supply and

switch off the electrical supply main switch. If there is a risk of frost,

drain the boiler.

From time to time check that the operating pressure of the hydraulic

system does not go below 1 bar.

In case of failure and/or malfunctioning, deactivate the appliance,

and do not try to repair or operate directly on it.

Appliance maintenance must be carried out at least once a year:

scheduling it with the Technical Assistance Service will avoid wasting

time and money.

Boiler use requires strict observation of some basic safety rules:

Do not use the appliance in any manner other than its intended

purpose.

It is dangerous to touch the appliance with wet or damp body parts

and/or when barefoot.

Under no circumstances cover the intake grids, dissipation grids and

ventilation vents in the installation room with cloths, paper or any

other material.

Do not use electrical switches, telephone or any other object that

causes sparks if there is a smell of gas. Ventilate the room by open-

ing doors and windows and close the central gas tap.

Do not place anything in the boiler.

Do not perform any cleaning operation if the appliance is not discon-

nected from the mains power supply.

Do not cover or reduce ventilation opening of the room where the

generator is installed.

Do not leave containers and inammable products in the installation

room.

Do not attempt to repair the appliance in case of failure and/or mal-

functioning.

It is dangerous to pull or twist the electric cables.

Children or unskilled persons must not use the appliance.

Do not carry out operations on sealed elements.

For better use, remember that:

- periodic external cleaning with soapy water not only improves its appear-

ance but also preserves panelling from corrosion, extending its life cycle;

- if the wall-mounted boiler is enclosed in a hanging unit, leave at least 5

cm for ventilation and maintenance;

- installation of a room thermostat will greatly improve comfort, a more ra-

tional use of the heat and energy saving; the boiler can also be connected

to a programmable timer in order to control the switching on and off of the

appliance during the day or week.

2a SWITCHING ON THE APPLIANCE

Every time the appliance is powered up, a series of data is shown on

the display including the ue gas sensor meter reading (-C- XX) (see

paragraph 4.3 - fault A09); the automatic purge cycle then starts, lasting

around 2 minutes. During this phase, the three LEDs light up alternately

and the symbol “ ” is shown on the monitor (g. 25).

To start up the boiler it is necessary to carry out the following operations:

- power the boiler

- open the gas tap to allow the ow of fuel

- set the room thermostat to the required temperature (~20°C)

- turn the mode selector to the desired position:

Winter mode: by turning the mode selector (g. 27) in the area divided

into segments, the boiler provides domestic hot water and heating. If there

is a heat request, the boiler switches on and the boiler status indicator

LED lights up with a xed green light. The digital monitor indicates the

heating water temperature (g. 29).