Baxi ECO5 Compact 14 F, ECO5 Compact 1.24 F, ECO5 Compact 24, ECO-5 Compact 24 F, ECO5 Compact 18 F User Manual [ru]

it	CALDAIA MURALE A GAS AD ALTO RENDIMENTO
	Manuale per l’uso destinato all’utente ed all’installatore
en	HIGH PERFORMANCE GAS-FIRED WALL-MOUNTED BOILER
	Operating and installation instructions
ru ВЫСОКОПРОИЗВОДИТЕЛЬНЫЙ НАСТЕННЫЙ ГАЗОВЫЙ КОТЕЛ
	Руководство по установке и эксплуатации
es	CALDERA MURAL DE GAS DE ALTO RENDIMIENTO
	Manual para el usuario y el instalador
hu	MAGAS HOZAMÚ FALI GÁZKAZÁN
	Felhasználói és szerelői kézikönyv
cs	PLYNOVÝ ZÁVĚSNÝ KOTEL S VYSOKOU ÚČINNOSTÍ
	Návod na použití určený pro uživatele a instalatéra
sk	PLYNOVÝ ZÁVESNÝ KOTOL S VYSOKOU ÚČINNOSŤOU
	Návod na použitie určený pre používateľa a inštalatéra
fr	CHAUDIERE MURALE A GAZ A HAUT RENDEMENT
	Notice d’emploi et d’installation destinée à l’utilisateur et à l’installateur
ro CENTRALĂ TERMICĂ MURALĂ PE GAZ CU RANDAMENT RIDICAT
	Manual de instrucţiuni pentru utilizator şi instalator

Dear Customer,

Our company is conident our new product will meet all your requirements. Buying one of our products guarantees all your expectations: good performance combined with simple and rational use.

Please do not put this booklet away without reading it irst: it contains useful information for the correct and eficient use of your product.

Our company declares that these products are marked in compliance with the essential requirements of the following Directives:

-Gas Directive 2009/142/EC

-Eficiency Directive 92/42/EEC

-Electromagnetic Compatibility Directive 2004/108/EC

-Low Voltage Directive 2006/95/EC

Use r & Installe r (en)

Our company, constantly striving to improve the products, reserves the right to modify the details given in this documentation at any time and without notice. These Instructions are only meant to provide consumers with use information and under no circumstance should they be construed as a contract with a third party.

CONTENT
	DESCRIPTION OF SYMBOLS .....................................................................................................................................................................	25
	SAFETY WARNINGS....................................................................................................................................................................................	25
	GENERAL PRECAUTIONS .........................................................................................................................................................................	26
	ENERGY-SAVING TIPS................................................................................................................................................................................	26
1.	COMMISSIONING THE BOILER..................................................................................................................................................................	27
1.1	ADJUSTING THE CH AND DHW FLOW TEMPERATURE ..........................................................................................................................	27
2.	OPERATING MODES ...................................................................................................................................................................................	28
3.	FILLING THE SYSTEM.................................................................................................................................................................................	28
4.	SWITCHING OFF THE BOILER ...................................................................................................................................................................	28
5.	GAS CONVERSION .....................................................................................................................................................................................	28
6.	PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION .......................................................................................................................	28
7.	FAULTS.........................................................................................................................................................................................................	29
8.	ROUTINE MAINTENANCE INSTRUCTIONS...............................................................................................................................................	29
	INSTRUCTIONS PRIOR TO INSTALLATION...............................................................................................................................................	30
9.	INSTALLING THE BOILER ...........................................................................................................................................................................	30
10.	INSTALLING THE DUCTS ............................................................................................................................................................................	30
10.1	CONCENTRIC DUCTS.................................................................................................................................................................................	31
10.2	SEPARATE DUCTS ......................................................................................................................................................................................	31
11.	ELECTRICAL CONNECTIONS.....................................................................................................................................................................	32
11.1	CONNECTING THE ROOM THERMOSTAT.................................................................................................................................................	33
11.2	ACCESSORIES NOT INCLUDED IN THE SUPPLY.....................................................................................................................................	33
12.	GAS VALVE...................................................................................................................................................................................................	34
12.1	GASCONVERSION ......................................................................................................................................................................................	34
12.2	REPLACING THE GAS VALVE.....................................................................................................................................................................	35
12.3	GAS VALVE CALIBRATION..........................................................................................................................................................................	35
12.4	REPLACING THE ELECTRONIC BOARD ...................................................................................................................................................	36
13.	VISUALISATION OF PARAMETERS ON THE DISPLAY (“INFO” FUNCTION) ...........................................................................................	36
14.	PARAMETER SETTINGS .............................................................................................................................................................................	37
15.	TROUBLESHOOTING SERVICE FAULTS ...................................................................................................................................................	38
16.	ADJUSTMENT AND SAFETY DEVICES ......................................................................................................................................................	41
17.	PUMP CAPACITY/ HEAD .............................................................................................................................................................................	41
18.	ANNUAL SERVICING ...................................................................................................................................................................................	42
18.1	HYDRAULIC UNIT ........................................................................................................................................................................................	42
18.2	POSITIONING THE ELECTRODE................................................................................................................................................................	42
18.3	CLEANING THE FILTERS ............................................................................................................................................................................	42
18.4	REMOVING SCALE FROM THE D.H.W. CIRCUIT ......................................................................................................................................	43
18.5	DISMOUNTING THE WATER-WATER HEAT EXCHANGER .......................................................................................................................	43
19.	COMBUSTION PARAMETERS ....................................................................................................................................................................	43
20.	TECHNICAL SPECIFICATIONS ...................................................................................................................................................................	44

7110102.03 (1-06/13)

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DESCRIPTION OF SYMBOLS

WARNING

Risk of damage to or malfunction of the appliance. Pay special attention to the warnings concerning danger to people.

DANGER OF BURNS

Wait for the appliance to cool down before working on the parts exposed to heat.

DANGER - HIGH VOLTAGE

Live components - electrocution hazard.

DANGER OF FREEZING

Possible formation of ice due to low temperatures.

FIRE HAZARD

Potentially lammable material or gas.

IMPORTANT INFORMATION

Information to read with particular care as it is useful for the correct operation of the boiler.

GENERIC PROHIBITION

It is forbidden to do/use the things indicated alongside the symbol.

SAFETY WARNINGS

SMELL OF GAS

•Switch off the boiler.

•Do not activate any electrical device (such as switching on the light).

•Put out any naked lames and open the windows.

•Call an Authorised Service Centre.

SMELL OF COMBUSTION FUMES

•Switch off the boiler.

•Open all the doors and windows to ventilate the room.

•Call an Authorised Service Centre.

FLAMMABLE MATERIAL

Do not use and/or store highly lammable material (thinners, paper, etc.) near the boiler.

SERVICING AND CLEANING THE BOILER

Switch off the boiler before working on it.

Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.

The appliance is not intended to be used by persons with reduced physical, sensory or mental capacities, or who lack experience or knowledge, unless, through the mediation of a person responsible for their safety, theyhave had the beneit

of supervision or of instructions on the use of the appliance.

BAXI a leading European manufacturer of hi-tech boilers and heating systems, has developed

CSQ-certiied quality management (ISO 9001), environmental (ISO 14001) and health and safety (OHSAS 18001) systems. This means that BAXI S.p.A. includes among its objectives the safeguarding of the environment, the reliability and quality of its products, and the health and safety of its employees.

Through its organisation, the company is constantly committed to implementing and improving these aspects in favour of customer satisfaction.

(en) r Installe & r Use

25	7110102.03 (1-06/13)

Use r & Installe r (en)

GENERAL PRECAUTIONS

This boiler has been designed to heat water to a temperature lower than boiling point at atmospheric pressure. It must be connected to a central heating system and to a domestic hot water supply system according to its performance and power output. Before having the boiler installed by a qualiied service engineer, make sure the following operations are performed:

•Make sure that the boiler is adjusted to use the type of gas delivered by the gas supply. To do this, check the markings on the packaging and the rating plate on the appliance.

•Make sure that the lue terminal draft is appropriate, that the terminal is not obstructed and that no exhaust gases from other appliances are expelled through the same lue duct, unless the latter has been specially designed to collect exhaust gas from more than one appliance, in compliance with current laws and regulations.

•Make sure that, if the boiler is connected to existing lue ducts, these have been thoroughly cleaned as residual products of combustion may detach from the walls during operation and obstruct the low of fumes.

•To ensure correct operation and maintain the warranty, observe the following precautions:

1. DHW circuit

1.1If the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate dispenser or an equivalent treatment system, compliant with current regulations.

1.2Thoroughly lush the system after installation of the appliance and before use.

1.3The materials used for the DHW circuit comply with Directive 98/83/EC.

2. Heating circuit

2.1 New system: Before installing the boiler, the system must be cleaned and lushed to eliminate residual thread-cutting swarf, solder and any solvents, using suitable off-the-shelf non-acid and non-alkaline products that do not damage metal, plastic and

rubber parts. To protect the system from scale, use inhibitors such as SENTINEL X100 and FERNOX protector for heating circuits.

Use these products in strict compliance with the manufacturers' inst ructions.

2.2 Existing system: Before installing the boiler, drain the system and clean it to remove sludge and contaminants, using suitable

proprietary products. Recommended cleaning products are: SENTINEL X300 or X400 and FERNOX regenerator for heating circuits. Use these products in strict compliance with the manufacturers' instructions. Remember that the presence of foreign bodies in the heating system can adversely affect boiler operation (e.g. overheating and excessive noise of the heat exchanger).

Initial lighting of the boiler must be carried out by an authorised Service Engineer who must irst ensure that:

•The rated data correspond to the supply (electricity, water and gas) data.

•That the installation complies with current regulations.

•The appliance is correctly connected to the power supply and earthed.

Failure to observe the above will render the warranty null and void. The names of the authorised Service Centres are indicated in the attached sheet. Prior to commissioning, remove the protective plastic coating from the boiler. Do not use any tools or

abrasive detergents to do this as you may damage the painted surfaces.

ENERGY-SAVING TIPS

Adjustment in the heating mode

Adjust the boiler low temperature depending on the kind of system. For systems with radiators, set a maximum heating water low temperature of approximately 60°C, and increase this value if the required room temperature is not reached. For systems with radiant loor panels, do not exceed the temperature indicated by the system designer. Use the External Sensor and/or Control Panel to automatically adjust the low temperature to atmospheric conditions or the indoor temperature. This ensures that no more heat than that effectively necessary is produced. Adjust the room temperature without overheating the rooms. Every extra degree centigrade means consuming approximately 6% more. Also room ambient temperature depending on how the rooms are used. For example, the bedroom or the least used rooms can be heated to a lower temperature. Use the programmable timer and set the night-time room temperature at approximately 5°C lower than that during the day. There is no appreciable saving to be achieved by setting it any lower. Only in case of a prolonged absence, such as a holiday, should the temperature setpoint be lowered. Do not cover radiators as this prevents the air from circulating correctly. Do not leave the windows partially open to ventilate the rooms

but open them completely for a short period.

Domestic hot water

Setting the domestic hot water at the required temperature without mixing it with cold water saves a lot of money. Additional heating wastes energy and creates additional scale.

7110102.03 (1-06/13)

26

1. COMMISSIONING THE BOILER

To light the boiler correctly, proceed as follows:

•Open the gas tap (normally positioned under the boiler);

•Check that the hydraulic pressure in the system is correct ("FILLING THE SYSTEM" section);

•power the boiler;

•press button and switch the boiler to Summer or Winter ;

•press buttons and to adjust the temperature of the heating circuit and domestic hot water circuit in order to ignite the main burner.

When the boiler is lit, the symbol		will appear on the display.
In the Summer position	the main burner will only ignite if a DHW tap is opened.

During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented. In this case, repeat the ignition procedure until gas reaches the burner. Press button for at least 2 seconds.

Key to SYMBOLS

Operation in the heating mode

Flame present (burner on)

No lame (ignition failure)

Operation in the DHW mode

Generic fault

Resettable fault

No water (low system pressure)

Numerical signal (temperature, code, fault, etc.)

Key to BUTTONS

	On / Off / Summer / Winter		Reset
	CH temperature adjustment		Information
	DHW temperature adjustment

1.1 ADJUSTING THE CH AND DHW FLOW TEMPERATURE

The system must be itted with an ambient thermostat for controlling indoor temperature.

Adjust the CH	and DHW	delivery temperature by pressing buttons	and	respectively. When the burner is
lit, the display shows the symbol .
HEATING: while the boiler is operating in the heating mode, the display shows the lashing symbol					and the heating delivery
temperature (°C).
DHW: while the boiler is operating in the DHW mode, the display shows the lashing symbol				and the DHW outlet temperature
(°C).

(en) n Sectio R USE

27	7110102.03 (1-06/13)

USE R Sectio n (en)

2. OPERATING MODES

Press this button to set the following operating modes:

•SUMMER

•WINTER

•OFF

In the SUMMER mode, the display shows . The boiler satisies requests for DHW only while central heating is not enabled

(ambient frost protection function active).

In the WINTER mode, the display shows . The boiler satisies requests for both DHW and central heating (ambient frost

protection function active).

In the OFF mode, the display shows neither of the above two symbols . In this mode, only the ambient frost protection function is active while requests for DHW and central heatingare not satisied.

3. FILLING THE SYSTEM

Disconnect the boiler from the mains power supply using the two-pole switch.

Regularly check that the pressure displayed on the pressure gauge B is 1 - 1.5 bar, with the boiler cold. If the pressure is too low, turn tap C to ill the boiler.

In case of overpressure, open the boiler drain valve A.

ASystem drain tap

BPressure gauge

CSystem illing tap

Take special care when illing the heating system. In particular, open any thermostat valves in the system, ensure the water enters slowly in order to

prevent the formation of air inside the primary circuit until operating pressure is reached. Lastly, vent any radiators in the syste m. Our company declines all

C	a

liability for damage deriving from the presence of air bubbles in the primary exchanger due to the incorrect or imprecise observance of the above.

The boiler is itted with a hydraulic pressure gauge which prevents the boiler from working if there is no water.

If pressure drops occur frequently, have the boiler checked by the AUTHORISED TECHNICAL SERVICE CENTRE.

4. SWITCHING OFF THE BOILER

To turn off the boiler, disconnect the electric power supply. In the "OFF" mode the boiler remains off (the display indicates OFF) though the electrical circuits remain live and the frost protection device is enabled.

5. GAS CONVERSION

The boilers can operate both on natural gas (G20) and LPG (G31). All gas conversions must be made by the AUTHORISED TECHNICAL SERVICE CENTRE.

6. PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION

Do not drain the whole system as illing up with water again could cause unnecessary and harmful scale to build up inside the boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add some speciic anti-freeze to the water in the system (e.g.: propylene glycol coupled with corrosion and scale inhibitors). The electronic boiler management system includes a “frost protection” function for the heating system which, when delivery temperature falls below 5°C, lights the burner until a delivery temperature of 30°C is reached.

The function is operative if: the boiler is electrically powered, there is gas, system pressure is normal and the boiler is not blocked.

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7. FAULTS

	The faults shown	on the	display are identiied with thel"E"symboand a number (fault code). For a
	complete list of faults, see the following table.
	If "R" appears on the display the fault must be RESET by the user.
	To reset, press and hold down		for at least 2 seconds. If this fault persists, call the Authorised Service
	Centre.
	FAULTS TABLE
	CODE DISPLAYED		FAULT		ACTION
	E01	Failed ignition shutdown.		Press and hold down	for at least 2 seconds.
	E02	Shut down by safety thermostat.		Press and hold down	for at least 2 seconds.
	E03	Board coniguration error		Call the Authorised Service Centre.
	E04	Safety error due to ignition failure/frequent lame		Press and hold down for at least 2 seconds.
		loss.
	E05	Flow sensor failure.		Call the Authorised Service Centre.
	E06	DHW sensor fault.		Call the Authorised Service Centre.
	E07	Fumes NTC probe fault.		Press and hold down for at least 2 seconds.
	E08	Error in the lame ampliication circuit.		Call the Authorised Service Centre.
	E09	Error in the gas valve safety circuit.		Call the Authorised Service Centre.
	E10	No hydraulic pressure switch enable.		Check that the pressure in the system is correct; See the FILLING
				THE SYSTEM section.
	E22	Switching off due to power supply reductions.		Automatic reset at voltages in excess of 170V. If this fault
				persists, call the Authorised Service Centre.
	E25	No water safety trip (pump probably blocked).		Press and hold down	for at least 2 seconds.
	E26	Heating circuit overheated/ no water safety trip		If this fault persists, call the Authorised Service Centre.
		(pump probably blocked).
	E35	Parasite lame (lame error).		If this fault persists, call the Authorised Service Centre.
	E36	Fumes NTC probe fault.		Call the Authorised Service Centre.
	E40 - E41	Shutdown due to probable obstruction of air/lue		Press and hold down for at least 2 seconds.
		duct or insuficient gas inlet pressure.
	E42	Flame loss (air/lue duct may be totally obstructed or		Press and hold down	for at least 2 seconds.
		fan may be faulty).
	E43	Shutdown due to probable obstruction of air/lue		Temporary fault. Automatic reset at voltages in excess of 185V or
		duct or insuficient gas inlet pressure.		press for at least 2 seconds.
	E50	Shutdown due to fumes NTC probe tripping for		Press and hold down for at least 2 seconds.
		overheating.
	E55	Gas valve not electronically calibrated.		Call the Authorised Service Centre.
	E62	Safety shutdown if the lame signal or fumes		Press and hold down for at least 2 seconds.
		temperature fail to stabilise
	E65	Safety shutdown if the air/lue duct obstruction test		Press and hold down for at least 2 seconds.
		fails frequently.
	E98	Electronic board parameters incorrectly conigured.		Call the Authorised Service Centre.
		Boiler operating at reduced power. Air/lue duct may		Temporarily eliminate the current heat request to reset the fault. If
	Flashing lights	be obstructed or gas inlet pressure may be too low.		this fault persists, call the Authorised Service Centre.

In case of a fault, the display backlighting lashes together with the error code.

If a fault code is displayed that is not included in the list or if a certain fault occurs frequently, contact the AUTHORISED TECHNICAL SERVICE CENTRE.

(en) n Sectio R USE

8. ROUTINE MAINTENANCE INSTRUCTIONS

To keep the boiler eficient and safe, have it checked by the Authorised Service Centre at the end of every operating period.

Careful servicing ensures economical operation of the system.

29	7110102.03 (1-06/13)

INSTALLE R Sectio n (en)

INSTRUCTIONS PRIOR TO INSTALLATION

The following notes and technical instructions are addressed to installers to allow them to carry out trouble-free installation.

Instructions for igniting and using the boiler are contained in the ‘Instructions for Users’ section. The installation must satisfy the requirements of local by-laws and technical regulations.

Moreover, the installation technician must be qualiied to install heating appliances. Additionally, bear in mind thefollowing:

•This boiler can be connected to any type of doubleor single-pipe convector plate, radiator or fancoil unit. Design the system sections as usual, though, bearing in mind the available capacity-head at the plate (see "SECTION" E at the end of this manual).

•Initial ignition of the boiler must be carried out by the Authorised Service Centre, as indicated on the attached sheet.

ADDITIONAL PUMP WARNING: If an additional pump is used on the heating system, a suitably sized hydraulic separator must be installed downline from the boiler. This will allow the water pressure switch on the boiler to operate correctly.

SOLAR CIRCUIT WARNING: if the instantaneous (mixed) boiler is connected to a systemthwisolar panels, the maximum temperature of the domestic hot water entering the boiler mustnot exceed 60°C.

TEMPERATURE ADJUSTMENT ON LOW TEMPERATURE HEATING SYSTEM: for a low temperature system (such as underloor heating), reduce the maximum CH temperature setpointtheonboiler to 45°C) by modifying parameter F06=001 as

described in the SETTING PARAMETERS section.

Failure to observe the above will render the warranty null and void.

Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.

9. INSTALLING THE BOILER

The template outline is shown in "SECTION C" at the end of this manual.

After deciding the exact location of the boiler, ix the template to the wall. Connect the system to the gas and water inlets present on the lower bar of the template. Fit two G3/4 taps (low and return) on the central heating circuit; these taps make it possible to carry out important operations on the system without draining it completely. If you are either installing the boiler on an existing system or replacing one, as well as the above, it a settling tank under the boiler on the system return line in order to collect any deposits and scale circulating in the system after lushing. After ixing the boiler to the template, connect the lue and air ducts, supplied as accessories, as described in the following sections.

Tighten the boiler water connections with care (maximum tightening torque 30 Nm).

10.INSTALLING THE DUCTS

The boiler is easy and lexible to install thanks to the extensive range of available accessories, as described below. The boiler has been designed for connection to a vertical or horizontal coaxial lue-air duct. The boiler can also be used with separate ducts using

the accessory splitting kit.

For optimal installation, the accessories supplied by the manufacturer should be used.

To optimise operating safety, make sure the lue ducts are irmly ixed to the wall with suitable brackets. The brackets must be positioned over the joints at a distance of approximately 1 metre from one another.

SOME OUTLET DUCT INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM

LENGTHS ARE SHOWN IN ANNEX "SECTION" D AT THE END OF THIS MANUAL.

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30

10.1 CONCENTRIC DUCTS

This type of duct is used to discharge exhaust fumes and draw combustion air both outside the building and if a LAS lue is itted. The 90° coaxial bend allows the boiler to be connected to a lue-air duct in any direction as it can be rotated by 360° It can also be used as a supplementary curve combined with a coaxial duct or a 45° curve.

If fumes are discharged outside the building, the lue-air duct must protrude at least 18 mm from the wall to allow an aluminium weathering surround to be itted and sealed to avoid water iniltrations.

•A 90° bend reduces the total duct length by 1 metre.

•A 45° bend reduces the total duct length by 0.5 metres.

•The irst 90° bend is not included when calculating the maximum available length.

Secure the intake pipes with two galvanised screws with a diameter of 4.2 mm and a maximum length of 19 mm.

Before securing the screws, make sure that at least 45 mm of the pipe is inserted into the gasket (see the igures in "SECTION"

D at the end of this manual).

Make sure there is a minimum downward slope towards the outside of 1 cm per metre of duct length.

Measure the diaphragm with the gauge.

	MODEL	Length (m)	Using a DIAPHRAGM on
			OUTLET DUCT (mm) “A”
		0 ÷ 1	Ø 43
	1.24 F - 24 F
		1 ÷ 2	Ø 45
		2 ÷ 5	No
	18 F	0 ÷ 1	Ø 41
		1 ÷ 2	Ø 43
	1.14 F - 14 F
		2 ÷ 5	Ø 45

A	CG 2117

10.2 SEPARATE DUCTS

This type of installation makes it possible to discharge exhaust fumes both outside the building and into single lu ducts. Comburent air can be drawn in at a different location from that of the lue terminal. The optional splitting accessory is ixed to the boiler turret

(Ø 100/60 mm) and allows the air and fumes to enter/leave the two separate ducts (Ø 80 mm). For further information, read the assembly instructions supplied with the accessory.

The 90° bend is used to connect the boiler to theandinlet

outlet ducts, adapting them to various requirements. It can also be used as a supplementary curve combined with a duct or a 45° bend.

•A 90° bend reduces the total duct length by 0,5 metres.

•A 45° bend reduces the total duct length by 0,25 metres.

•The irst 90° bend is not included when calculating the maximum available length.

Make sure there is a minimum downward slope towards the outside of 1 cm per metre of duct length. In the event of installation of the condensate collection kit, the angle of the drain duct must be directed towards the boiler.

Measure the diaphragm with the gauge.

(en) n Sectio R INSTALLE

31	7110102.03 (1-06/13)

A

oaneficientearthsystemincompliancewithcurrentsafety lyusingthesuppliedthree-pincable,observingcorrectLIVE-

INSTALLE R Sectio n (en)

	MODEL	Length (m)		Using a DIAPHRAGM on
		(L1	+ L2)	OUTLET DUCT (mm) “A”
		0	÷ 4	Ø 43
	1.24 F - 24 F	4 ÷ 10		Ø 45
		10	÷ 20	Ø 47
		20	÷ 30	No

	MODEL	Length (m)	Using a DIAPHRAGM on
		(L1 + L2)	OUTLET DUCT (mm) “A”
	18 F	0 ÷ 15	Ø 41
		15 ÷ 25	Ø 43
	1.14 F - 14 F
		25 ÷ 30	Ø 45

For the C52 type, do not it the lue and air duct terminals on opposite walls of the building.

If the discharge duct is longer than 6 metres, install the condensate collection kit, supplied as an accessory, near the boiler.

If itting a single lue duct, make sure it is adequately insulated (e.g.: with glass wool) wherever the duct passes through building walls. For detailed installation instructions, consult the technical data provided with the accessories.

10.2.1 NOTES FOR INSTALLATIONS WITH SEPARATE OUTLETS

In particular installation situations with separate ducts,

vibrations may be generated in the appliance.

To solve this problems, a slot closed with pre-punched holes

on the outlet (Ref. A) has been prepared on the fumes outlet. This can be easily removed by the Qualiied Technical Assistance Service without having to remove the outlet. Remove knock-out A andchecktheapplianceworkscorrectly.

11.ELECTRICAL CONNECTIONS

Thismachineisonlyelectricallysafeifitiscorrectlyconnectedt

regulations.

Connecttheboilertoa230Vsingle-phaseearthedpowersupp

NEUTRAL polarity.

Use a double-pole switch with a contact separation of at least 3 mm.

When replacing the power supply cable, it a harmonised "HAR H05 W-F" 3x0.75mm2 cable with a maximum diameter of 8 mm.

Access to the power supply terminal block

•remove the front panel of the boiler (secured at the bottom with two screws);

•turn the control box downwards;

•remove the metal guard from the control box;

•open the left-hand side of the cover and access the electrical connections area.

The 2A fast-blowing fuse is incorporated in the power supply terminal block (to check and/or replace the fuse, pull out the black fuse carrier).

The terminal block is at high voltage. Before making connections, make sure the appliance is disconnected from the power supply.

Respect polarity L (LIVE) - N (NEUTRAL).

(L) = Live (brown)

(N) = Neutral (light blue).

= Earth (yellow-green).

(1) (2) = contact for Room Thermostat.

7110102.03 (1-06/13)

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11.1 CONNECTING THE ROOM THERMOSTAT

To connect the Room Thermostat to the boiler, proceed as follows:

•access the power terminal block as described in the ELECTRICAL CONNECTIONS section;

•remove the jumper on terminals (1) and (2);

•thread the two-wire cable through the grommet and connect it to these two terminals.

11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY

11.2.1 CONNECTING THE EXTERNAL PROBE

To connect the External Probe, supplied as an accessory, to the boiler, proceed as follows:

•access the power terminal block as described in the ELECTRICAL CONNECTIONS section;

•for heating and DHW models: connect the external probe to the two RED wires itted with faston covers;

•for heating only models: connect the external probe to the M2 terminal block, see the wiring diagrams in annex "SECTION" B at the end of this manual;

•with the external probe connected, select the "kt" climate curve by pressing , selecting from the available ones (0...90), see the curves chart in annex "SECTION" E at the end of this manual (the preset curve is 0).

KEY TO CURVE CHART Kt - "SECTION" E

	Flow temp		Outside temp

11.2.2 CONNECTING AN EXTERNAL STORAGE BOILER (for heating only models)

The DHW priority sensor NTC and the motor of the 3-way valve are not included in the kit of the appliance because they are supplied as accessories.

CONNECTING THE STORAGE BOILER SENSOR

The boiler can be electrically connected to an external storage boiler. A diagram of the hydraulic connection of the external storage boiler is shown in annex "SECTION" F. Connect the priority sensor NTC to terminals on terminal block M2. The sensitive element of the NTC sensor must be inserted in the special welocated on the storage boiler. Make sure that the exchangecapacity of the storage boiler coil is appropriate for the power ofhet boiler. Adjust DHW temperature (+35°C...+60°C) by pressing .

IMPORTANT: set parameter F03 = 003 as described in the SETTING PARAMETERS section.

KEY TO STORAGE BOILER CONNECTIONS (see diagram A in annex "SECTION" F at the end of this manual).

A	Heating Unit	E	Heating water / Storage boiler return
B	Powered 3-way valve	F	Storage boiler unit
C	Heating water low	G	DHW priority probe
D	Storage boiler water low

ELECTRICAL CONNECTION TO 3-WAY VALVE MOTOR

The 3-way valve motor and relative wiring harness are supplied separately in the form of a kit. Connect the plugs on the 3-way valve wiring harness to terminals of the M2 terminal block on the boiler.

The anti-legionellosis function is NOT ENABLED. To enable it, set parameter F16 = 055...067 (setpoint 55...67°C) as described in the SETTING PARAMETERS section.

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12.GAS VALVE

12.1 GASCONVERSION

The Technical Assistance Service can convert this boiler to natural g as (G20) or LPG (G31). Carry out the following operations:

A)replace the main burner injectors;

B)parameterise the electronic board;

C)mechanically calibrate the gas valve pressure regulator;

D)electronically calibrate the gas valve;

E)inal checks.

A) Replace the main burner injectors

•Disconnect the boiler from the power supply;

•remove the front panel of the boiler;

•remove the screws (a) connecting the injector ramp to the gas valve and burner;

•remove the injector ramp and the burner shield at the same time (b);

•replace the ramp injectors making sure to fully tighten

them to prevent gas leaks. Injector diameters are speciied in the burner injector-pressure table.

•correctly reposition the injector ramp and the burner shield (b);

•secure the screws connecting the injector ramp to

the burner and gas valve. Make sure the o-ring (c) between the gas valve and the injector ramp is correctly positioned;

•check the gas circuit for leaks.

c
b
a	CG_2451

B) Parameterise the electronic board

•Power the boiler;

•set the (Fxx) parameters with the values indicated in the following table, depending on the gas type following the procedure described in the SETTING PARAMETERS section.

	G20		G31
F02	0		1
F08		100
F09		100
F18		18
F45		1
F48		100
F64		1

C) Mechanically calibrate the gas valve pressure regulator

•Connect the positive pressure test point of a pressure gauge, possibly water-operated, to the gas valve pressure test point (Pb);

•open the gas tap and switch the boiler to the "Winter" mode;

•open a hot water tap that can provide a low rate of at least 10 litres a minute or make sure there is maximum heat demand;

C1) Adjust to nominal heat output:

•remove the modulator cover;

•adjust the tube brass screw (a) until the pressure values shown in the burner injector-pressure table correspond to the nominal heat output;

•make sure that the dynamic inlet pressure of the boiler, measured at the gas valve pressure test point (Pa) is correct, as indicated in the TECHNICAL SPECIFICATIONS section.

C2) Adjust to reduced heat output:

•disconnect the modulator power cable and adjust the screw (b) until the pressure values corresponding to the reduced power indicated in the burnerjectorin -pressure chart are obtained;

•reconnect the wire;

•mount the modulator cover and seal.

(A)

(B)

7110102.03 (1-06/13)

34

Burner injector-pressure table

		1.24 F - 24 F			18 F - 14 F - 1.14 F
Gas type	G20		G31	G20		G31
Injector diameter (mm)	1.35		0.85	1.18		0.77
Burner pressure (mbar*)	2.1		5.4	3.6		7.8
REDUCED HEAT OUTPUT
Burner pressure (mbar*)	11.8		28.8	11.6		24.7
RATED HEAT OUTPUT
N° injectors		11			11

*1 mbar = 10.197 mm H2O

D)Electronically calibrate the gas valve

D1) Electronically adjust to reduced heat output:

• set parameter F08-F09 = 0 following the procedure described in the SETTING PARAMETERS section;

•open a hot water tap that can provide a low rate of at least 10 litres a minute or make sure there is maximum heat demand;

•slowly increase (not more than 2 points at a time) the value of parameter F45 until the pressure read with the pressure gauge increases; then reduce the value of F45 by 2 points and press to save.

D2) Electronically adjust to nominal heat output:

•set parameters F08-F09 = 100, F48 = 50;

•open a hot water tap that can provide a low rate of at least 10 litres a minute or make sure there is maximum heat demand;

•slowly increase (not more than 2 points at a time) the value of parameter F48 until the pressure read with the pressure gauge reaches the value indicated in the burner pressure/injectors table (NOMINAL HEAT OUTPUT); then increase the value of F48 by 2 points;

•set parameters F64 = 0, F18 = 0 and press to save;

•turn off the two-pole switch to disconnect the boiler from the power supply for at least 5 seconds;

•put the front panel back in place.

E) Final checks

• Note down the conversion on the boiler rating plate, specifying the type of gas and indicating that calibration was performed.

After performing electronic calibration, set parameter F08-F09 as shown in the table below.

	24 F			1.24 F – 18 F			14 F			1.14 F
	G20 - G25.1		G31	G20 - G25.1		G31	G20 - G25.1		G31	G20 - G25.1		G31
F08	055		060	100			050		060	050		060
F09	100			100			100			050		060

If lashes on the display when calibrating the gas valve, disconnect the boiler from the power supply and repeat the calibration procedure starting from point B).

12.2 REPLACING THE GAS VALVE

When replacing the gas valve, perform the following operations:

•switch off the boiler;

•close the gas inlet valve;

•replace the gas valve;

•open the gas inlet valve and make sure there are no gas leaks;

•perform the operations described in points B, C, D of the GAS CONVERSION section.

12.3 GAS VALVE CALIBRATION

To calibrate the gas valve, perform the operations described in points B, C, D of the GAS CONVERSION section.

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12.4 REPLACING THE ELECTRONIC BOARD

When replacing the electronic valve, perform the following operations:

•disconnect the boiler from the mains power supply.

•remove the front panel of the boiler;

•replace the electronic board;

•power the boiler;

•set parameters F03 and F12 as described in the SETTING PARAMETERS section according to the boiler model indicated on the rating plate.

Electronically calibrate the gas valve as follows:

•connect the positive pressure test point of a pressure gauge, possibly water-operated, to the gas valve pressure test point (Pb);

•open the gas tap and switch the boiler to the Winter mode;

•open a hot water tap that can provide a low rate of at least 10 litres a minute or make sure there is maximum heat demand;

•press buttons and together for 10 seconds. Press when "ON" appears on the display;

• press

when "INF" appears on the display. The modulator current percentage lashes on the display;

•press when the pressure gauge measures an increase from 0.2 to 0.4 mbar with respect to the value indicated in the burner pressure/injectors table (REDUCED POWER); the modulator current percentage appears on the display;

•press when the pressure measured by the pressure gauge reaches the value indicated in the burner pressure/injectors table (NOMINAL HEATING OUTPUT);

•after calibration, "MEM" lashes on the display for 5 seconds.

If a pressure gauge is unavailable, the automatic gas valve calibration procedure can be performed as follows:

•open the gas tap and switch the boiler to the Winter mode;

•keep the front panel of the boiler closed;

•open a hot water tap that can provide a low rate of at least 10 litres a minute or make sure there is maximum heat demand;

•press buttons and together for 10 seconds. Press when "ON" appears on the display;

•after calibration, "MEM" lashes on the display for 5 seconds.

If one of the following symbols: C01 – C02 – C03 – C04 – C05 appears after calibration, repeat the gas valve calibration procedure.

Check the mechanical calibration of the gas valve pressure adjuster, as described in the GAS CONVERSION section, before electronically calibrating the gas valve

13.VISUALISATION OF PARAMETERS ON THE DISPLAY ("INFO" FUNCTION)

Press for at least 6 seconds to display information concerning boiler operation.

When the “INFO” function is enabled, the message “A00” alternating with the boiler delivery temperature, is shown on the display:

CG_1808

Press buttons to display the following information:

A00: current heating delivery temperature (°C);

A01: current DHW temperature (°C);

A02: current external temperature (°C) (with external sensor connected);

A03: current fumes temperature (°C);

A04: instantaneous (%) value of the gas valve control signal;

A05: power range (%) (MAX CH);

A06: heating setpoint temperature (°C);

A07: DHW temperature setpoint (°C);

A08: last error that occurred in the boiler;

A09: not used;

A10: not used.

This function remains active for 3 minutes. It is possible to interrupt the “INFO” function in advance by pressing	or turning off
the power to the boiler.

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36

14.PARAMETER SETTINGS

To set the boiler parameters, press and together and hold down for at least 6 seconds. When the function is activated, the display shows “F01” alternated with the value of the parameter.

Edit parameters

•To scroll the parameters press ;

•Press buttons to change the single parameter value;

•Press to save changes, the display shows “MEM”;

•Press to leave the function without saving, the display shows "ESC".

ALL MODIFIED PARAMETERS SHOULD BE NOTED DOWN IN THE TABLE AT THE END OF THIS MANUAL.

	Parameter	Description of parameters		Factory settings
			14 F	1.14 F	18 F		24 F	1.24 F
	F01	Boiler type 010=airtight chamber			010
	F02	Gas used 000=NATURAL GAS - 001=LPG - 002=gas G25.1			000 - 001
		Hydraulic system
	F03	000 = instantaneous appliance	000	004	000		000	004
		003 = appliance with external storage boiler
		004 = heating only appliance
	F04 - F05	Setting programmable relays 1 and 2 (See SERVICE instructions)			000
		000=no associated function
		Maximum heating setpoint setting (°C)
	F06	000=85°C (Burner goes out at 90 °C)			000
		001=45°C (Burner goes out at 50 °C)
	F07	DHW inlet priority coniguration			000
	F08	CH max. output (0-100%)	50	50	100		55	100
			(60 LPG)	(60 LPG)			(60 LPG)
	F09	DHW max. output (0-100%)	100	50	100		100	100
				(60 LPG)
	F10	CH and DHW min. heat output (0-100%)			000
	F11	Delay prior to new ignition in CH mode			003
		000=10 seconds - 001...010 = 1...10 minutes
	F12	Identiication of boiler model	009	009	008		007	007
	F13	Pump overrun time in heating mode			003
		000=10 seconds - 001...240 = 1...240 minutes
	F14	Test of correct DHW probe position 000=Disabled - 001=Always			000
		enabled
	F15	Factory setting			000
	F16	Anti-legionellosis function			000
		000 = Disabled - 055…067 = Enabled (setpoint 55…67°C)
	F17	Hydraulic pressure switch coniguration			001
	F18	Release parameters for SERVICE			000

			Factory settings
	Parameter	Description of parameters
			14 F - 1.14 F - 18 F
			24 F - 1.24 F
	F19	Factory setting	001
	F20	Factory setting	000
	F21	Factory setting	030
	F22	Factory setting	110
	F23	Factory setting	010
	F24	Factory setting	005
	F25	Factory setting	000
	F26	Factory setting	165
	F27	Factory setting	010
	F28	Factory setting	070
	F29	Factory setting	020
	F30	Factory setting	000
	F31	Factory setting	180
	F32	Factory setting	170
	F33 - F34	Factory setting	004
	F35	Factory setting	015
	F36	Factory setting	020

	Parameter	Description of	Factory settings
		parameters	14 F - 1.14 F - 18 F
			24 F - 1.24 F
	F44	Factory setting	000
	F45	Factory setting	(this value depends on
			valve calibration)
	F46	Factory setting	015
	F47	Factory setting	000
	F48	Factory setting	(this value depends on
			valve calibration)
	F49	Factory setting	105
	F50	Factory setting	100
	F51	Factory setting	005
	F52	Factory setting	020
	F53	Factory setting	100
	F54	Factory setting	000
	F55	Factory setting	003
	F56	Factory setting	025
	F57	Factory setting	000
	F58	Factory setting	000

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F37	Factory setting	003
F38	Factory setting	000
F39	Factory setting	067
F40	Factory setting	070
F41	Factory setting	010
F42	Factory setting	042
F43	Factory setting	001

F59	Factory setting	005
F60	Factory setting	120
F61	Factory setting	015
F62	Factory setting	030
F63	Factory setting	025
F64	Factory setting	000

15.TROUBLESHOOTING SERVICE FAULTS

The faults shown on the display are identiied with the symbol "E" and a number (fault code). For a complete list of faults, see the following table.

If "R" appears on the display the fault must be RESET by the user.

To reset, press and hold down for at least 2 seconds. If this fault persists, call the Authorised Service

Centre.

	CODE	FAULT	POSSIBLE REASON	SERVICE ACTION
	DISPLAYED
			• No inlet gas pressure.	• Check that the gas valve is open and there is no air in
	E01	Shut down for ignition
		failure.	• Ignition switch-lame sensor wire	the gas supply circuit.
			interrupted.	• Check the gas supply pressure.
			• Flame sensing electrode faulty or	• Check the wire is uninterrupted and makes good
			incorrectly positioned.	contact with the lame sensing electrode and the
			• Gas valve faulty.	ignition switch.
			• Electronic board faulty.	• Check the connections between the gas valve and the
				electronic board.
				• Check the lame sensing electrode is in good
				condition and in the right position (see the
				POSITIONING THE IGNITION AND FLAME-
				SENSING ELECTRODE section).
	E02	Shut down by safety	• No water in the primary circuit	• Check pump operation (unscrew the front cap and
		thermostat.	(pump blocked or exchanger	release the pump impeller with a screwdriver).
			obstructed).	• Check the pump power input wiring.
			• Limit thermostat faulty.	• Check that the limit thermostat is undamaged and
			• Limit thermostat wiring	replace it if necessary.
			interrupted.	• Check the continuity of the limit thermostat wiring.
			• CH low NTC probe faulty.	• Check the CH low NTC probe (*).
			• Electronic board faulty.	• Check whether the exchanger is clogged.
	E03	Board coniguration error.	• Parameter F43 has not been set	• Set parameter F43 with the value indicated in the
			correctly.	table in the SETTING PARAMETERS section.
	E04	Safety error due to	• See the reasons indicated in E01.	• See the actions indicated in E01.
		ignition failure or frequent	• See the reasons indicated in E42.	• See the actions indicated in E42.
		lame loss.	• CH low NTC probe faulty (circuit	• Check the CH low NTC probe (*).
	E05	Flow sensor failure.
			open or shorted).	• Check the continuity of the CH low probe wiring.
			• CH low probe wiring interrupted	• Make sure the wiring has not shorted.
			or shorted.
	E06	DHW sensor fault.	• DHW low NTC probe faulty	• Check the DHW NTC probe (*).
			(circuit open or shorted).	• Check the continuity of the DHW probe wiring
			• DHW low probe wiring	• Make sure the wiring has not shorted.
			interrupted or shorted.
	E07	Fumes NTC probe fault.	• Fumes NTC probe faulty (circuit	• Check the fumes NTC probe (**).
			open).	• Check the continuity of the fumes probe wiring
			• Fumes probe wiring interrupted.	• Check the continuity of the earth connections between
	E08	Error in the lame	• The electronic board is not
		ampliication circuit.	earthed.	the electronic board (X4 connector) and the power
			• Electronic board faulty.	supply terminal block.
	E09	Error in the gas valve	• Electronic board faulty.	• Replace the electronic board.
		safety circuit.	• CH circuit pressure < 0.5 bar	• If the pressure in the CH circuit is < 0.5 bar, perform
	E10	No hydraulic pressure
		switch enable.	• Hydraulic pressure switch faulty.	illing (see the FILLING THE SYSTEM section).
			• Hydraulic pressure switch wiring	• Check the hydraulic pressure switch works correctly.
			faulty.	• Check the continuity of the hydraulic pressure switch
				wiring
	E22	Switching off due to power	• Supply voltage V < 162V	• Check whether the power supply reductions are due
		supply reductions.	(automatic reset at V> 168V)	to reasons other than the boiler. If so, contact the
			• Electronic board faulty.	electricity provider.

7110102.03 (1-06/13)

38

	CODE	FAULT	POSSIBLE REASON	SERVICE ACTION
	DISPLAYED
			• No water in the CH circuit	• Check pump operation (unscrew the front cap and
	E25	No water safety trip.
			(pump blocked or exchanger	release the rotor with a screwdriver).
			obstructed).	• Check the pump power input wiring.
			• CH low NTC probe faulty.	• Check the CH low NTC probe (*).
			• Electronic board faulty.	• Check whether the exchanger is clogged.
	E26	CH delivery NTC probe	• See the reasons indicated in E25.	• See the actions indicated in E25.
		overheating safety trip.	• The electronic board is not	• Check the continuity of the earth connections between
	E35	Parasite lame (lame
		error).	earthed.	the electronic board (X4 connector) and the power
			• Flame sensing electrode faulty or	supply terminal block.
			incorrectly positioned.	• Check the lame sensing electrode is in good
			• Electronic board faulty.	condition and correctly positioned (see the
				POSITIONING THE IGNITION AND FLAME-
				SENSING ELECTRODE section).
	E36	Fumes NTC probe fault.	• Fumes NTC probe faulty	• Check the fumes NTC probe (**).
			(shorted).	• Make sure the fumes probe wiring has not shorted.
			• Fumes probe wiring shorted.
	E40 - E41	Shutdown due to probable	• No inlet gas pressure.	• Check the gas supply pressure (for natural gas
		obstruction of air-lue duct	• Gas valve modulator wires not	Palim.>9mbar).
		or insuficient gas inlet	connected.	• Check the connection of the gas valve modulator
		pressure.	• Flame sensing electrode faulty or	wiring to the electronic board.
			incorrectly positioned.	• Check that the pressure at the burner has been
			• Fumes NTC probe faulty or	correctly calibrated (see the GAS VALVE section).
			incorrectly positioned	• Check the lame sensing electrode is in good
			• Air-lue duct obstructed.	condition and correctly positioned (see the
			• Gas valve faulty.	POSITIONING THE IGNITION AND FLAME-
			• Electronic board faulty.	SENSING ELECTRODE section).
				• Check the fumes NTC probe (**).
				• Make sure the air and lue ducts are not obstructed
				and have been correctly installed (they must not
				exceed the prescribed maximum lengths and must
				be itted with the correct diaphragm – see the
				INSTALLING THE DUCTS section).
	E42	No lame.	• Fan not working (fault or no	• Check that the fan power supply wiring is connected
			power).	to the electronic board.
			• Air-lue duct completely	• Make sure the air and lue ducts are not obstructed
			obstructed.	and have been correctly installed (they must not
			• Electronic board faulty.	exceed the prescribed maximum lengths and must
				be itted with the correct diaphragm – see the
				INSTALLING THE DUCTS section).
	E43	Shutdown due to probable	• See the causes indicated in E40	• See the actions indicated in E40 - E41.
		obstruction of air-lue duct	- E41	• Check whether the power supply reductions are due
		or insuficient gas inlet	• Input voltage V<180V	to reasons other than the boiler. If so, contact the
		pressure.	(automatically resets at V>185V	electricity provider
			or by pressing “R”).
			• Electronic board faulty.
	E50	Shutdown due to fumes	• Fumes temperature>180°C.	• Check the heat exchange of the water/ fumes
		NTC probe tripping for	• Insuficient heat exchange on the	exchanger: insuficient circulation or presence of
		overheating.	water/fumes exchanger.	scale.
			• Fumes NTC probe faulty.	• Check the fumes NTC probe (**).
			• Electronic board faulty.
	E55	Gas valve not	• The electronic board has not	• Electronically calibrate the gas valve (parameters F45
		electronically calibrated	been replaced and the gas valve	and F48) as described in the GAS VALVE section
			has not yet been electronically
			calibrated.
	E62	Safety shutdown if the	• Flame sensing electrode faulty or	• Check the wire is uninterrupted and makes good
		lame signal or fumes	incorrectly positioned.	contact with the lame sensing electrode and the
		temperature fail to	• Fumes NTC probe faulty.	ignition switch.
		stabilise	• Electronic board faulty.	• Check the lame sensing electrode is in good
				condition and correctly positioned (see the
				POSITIONING THE IGNITION AND FLAME-
				SENSING ELECTRODE section).
				• Check the fumes NTC probe (**).
	E65	Safety shutdown if the air-	• See the causes indicated in E40	• See the actions indicated in E40 - E41.
		lue duct obstruction test	- E41.
		fails frequently.

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	CODE	FAULT	POSSIBLE REASON	SERVICE ACTION
	DISPLAYED
			• The electronic board has been	• Set parameters F03 and F12 with the values indicated
	E98	Electronic board
		parameters incorrectly	replaced and not yet calibrated	in the table in the SETTING PARAMETERS section
		conigured	for the boiler model.	according to the boiler model indicated on the rating
			• Parameters F03 and F12 have	plate.
			not been set or have been
			incorrectly set.
		Boiler operating at	• No inlet gas pressure.	• Check the gas supply pressure
		reduced power.	• Gas valve modulator wires not	• (for natural gas Palim.>9mbar).
			connected.	• Check the connection of the gas valve modulator
			• Flame sensing electrode faulty or	wiring to the electronic board.
	Flashing		incorrectly positioned.	• Check that the pressure at the burner has been
			• Air-lue duct partially obstructed.	correctly calibrated (see the GAS VALVE section)
			• Gas valve faulty.	• Check the lame sensing electrode is in good
			• Electronic board faulty.	condition and correctly positioned (see the
				POSITIONING THE IGNITION AND FLAME-
				SENSING ELECTRODE section).
				• Make sure the air and lue ducts are not obstructed
				and have been correctly installed (they must not
				exceed the prescribed maximum lengths and must
				be itted with the correct diaphragm – see the
				INSTALLING THE DUCTS section).

CH = central heating DHW = domestic hot water

(*) DHW NTC and CH delivery probe: cold resistance value: approximately 10 kΩ @ 25° C (resistance decreases as temperature rises). (**) NTC fumes probe: cold resistance value: approximately 49 kΩ @ 25° C (resistance decreases as temperature rises).

7110102.03 (1-06/13)

40

16.ADJUSTMENT AND SAFETY DEVICES

The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:

• Limit thermostat

Thanks to a sensor placed on the CH low line, this thermostat interrupts the low of gas to the burner if the water in the primary circuit overheats. In these conditions, the boiler is blocked and only after the fault has been eliminated can it be ignited again by pressing for at least 2 seconds.

It is forbidden to disable this safety device.

• Electronic fumes outlet control

The boiler is itted with an electronic function which controls the fumes outlet.

• Flame ionisation detector

The lame sensing electrode, located in the centre of the burner, guarantees safety of operation in case of gas failure or incomplete ignition of the burner.

In these conditions, the boiler is blocked after 3 ignition attempts.

Press for at least 2 seconds to re-establish normal operating conditions.

• Hydraulic pressure switch

This device allows the main burner to be ignited only if system pressure is higher than 0.5 bar.

• Heating circuit pump post-circulation

The electronically-controlled pump post-circulation function lasts 3 minutes and is enabled, in the heating mode, if the ambient thermostat causes the burner to go out.

• Anti-freeze device

The electronic boiler management system includes a "frost protection" function for the heating and DHW systems which, when low temperature falls below 5°C, operates the burner until a low temperature of 30°C is reached. This function is enabled when the boiler is switched on, the gas supply is open and the system is correctly pressurised.

• Water not circulating in primary circuit (pump probably blocked)

If there is insuficient or no water circulating in the primary circuit, the boiler blocks and the error code E25 is shown on the display.

• Pump anti-block function

If no heat demand is received in the heating and/or DHW modes for 24 consecutive hours, the pump will automatically start and

operate for 10 seconds.

This function is operative when the boiler is powered.

• Hydraulic safety valve (heating circuit)

This device is set to 3 bar and is used for the heating circuit.

Connect the safety valve to a drain trap. Do not use it to drain the heating circuit.

17.PUMP CAPACITY/ HEAD

This is a high static head pump it for installation on any type of single or double-pipe heating systems. The automatic air valve incorporated in the pump allows quick venting of the heating system.

KEY TO PUMP CHARTS - “SECTION” E

Q	RATE OF FLOW
H	HEAD

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18.ANNUAL SERVICING

If the boiler was operating, wait for the combustion chamber and pipes to cool down.

Before commencing any maintenance operations, make sure the boiler is disconnected from the power supply. Afterwards, move the knobs and/or operating parameters of the boiler to their original positions.

Do not clean the boiler with abrasive, aggressive and/or easily lammable substances (such as petrol, acetone, etc.).

To optimise boiler eficiency, carry out the following annual controls:

•Check the appearance and airtightness of the gaskets of the gas and combustion circuits;

•Check the state and correct position of the ignition and lame-sensing electrodes;

•Check the state of the burner and make sure it is irmly ixed;

•Check for any impurities inside the combustion chamber. Use a vacuum cleaner to do this;

•Check the gas valve is correctly calibrated;

•Check the pressure of the heating system;

•Check the pressure of the expansion vessel;

•Check the fan works correctly;

•Make sure the lue and air ducts are unobstructed;

18.1 HYDRAULIC UNIT

For special areas, where the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate dispenser or an equivalent treatment system, compliant with current regulations.

18.2 POSITIONING THE ELECTRODE

L

CG_2399

mm

3 ÷ 4

The electrode must completely cross the width (L) of the burner element.

18.3 CLEANING THE FILTERS

The DHW and CH ilters are housed inside removable cartridges (see igure in annex "SECTION" F at the end of this manual). The CH cartridge is located on the CH return line (F) while the DHW cartridge is on the cold water inlet (E). To clean the ilters, proceed as described below:

•switch off the boiler;

•shut the DHW inlet valve;

•drain the water in the CH circuit by opening valve (A);

•remove the clip (1-E/F) from the ilter as illustrated in the igure and take out the cartridge (2-E/F) containing the ilter, taking care not to apply excessive force;

•to extract the heating ilter cartridge, irst remove the 3-way valve motor (1-2G);

•eliminate any impurities and deposits from the ilter;

•reposition the ilter in the cartridge and put it back into its housing, securing it with the clip.

•The NTC DHW sensor is positioned in point (D).

when replacing and/or cleaning the O-rings on the hydraulic assembly, only use Molykote 111 as a lubricant, not oil or grease.

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18.4 REMOVING SCALE FROM THE D.H.W. CIRCUIT

The DHW circuit can be cleaned without removing the water-water exchanger from its housing if the plate was initially provided with the speciic tap (available on request) located on the DHW outlet (see igure in annex "SECTION" F at the end of this manual).

To clean, proceed as follows:

•Close the DHW inlet valve;

•Drain the DHW system by opening a hot water tap;

•Close the DHW outlet tap;

•Remove the clip (1E);

•Remove the ilter (2E);

•to replace the DHW NTC probe (D).

If the special tap is not supplied, dismount the water-water heat exchanger, as described in the next section, and clean it separately. Remove the scale from the seat and relative NTC sensor itted on the DHW circuit (D). To clean the exchanger and/or DHW circuit,

use Cillit FFW-AL or Benckiser HF-AL.

18.5 DISMOUNTING THE WATER-WATER HEAT EXCHANGER

The stainless steel plate-type water-water heat exchanger is easily disassembled with a screwdriver (see igure in annex "SECTION" F at the end of the manual ) by operating as described below:

•drain the system, just the boiler if possible, through the drain tap;

•drain the DHW system;

•remove the two screws at the front securing the water-water heat exchanger and pull it out (B).

Pay great attention when dismantling the individual parts of the hydraulic assembly. Do not use sharp tools, do not apply excessive force when removing the ixing clip.

19.COMBUSTION PARAMETERS

Tomeasurecombustioneficiencyandthetoxicityoftheproductsof combustion,theboilerisittedwithtwodedicatedtestpo ints. Oneconnectionpointisconnectedtotheexhaustductand isusedtomeasurecombustioneficiencyandthetoxicityofthe

products of combustion. The other is connected to the air intake circuit and is used to check for the presence of any products of combustion circulating in installations with co-axial lues.

The following parameters can be measured at the connection point on the lue gas circuit:

•temperature of the combustion products;

•concentration of oxygen (O2) or, alternatively, carbon dioxide (CO2);

•carbon monoxide (CO) concentration.

The temperature of the comburent air must be measured on the test point located on the air intake lue by inserting the measurement sensor by about 3 cm.

The combustions analisys shall be done using an analyzer regularly calibrated.

(en) n Sectio R INSTALLE

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