Baxi LUNA DUO-TEC MP+ 1.115 Guide

A
MP+ 1.115 - 1.130 - 1.150
it CALDAIA MURALE A GAS A CONDENSAZIONE
Manuale per l’uso destinato all’utente e all’installatore
en CONDENSING GAS WALL-HUNG BOILERS
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de (AT) KONDENSATIONS-WANDGASHEIZKESSEL
Gebrauchsanleitung für den Benutzer und Installateur
es CALDERA MURAL DE GAS A CONDENSACIÓN
Manual de uso destinado al usuario y al instalador

25
U s e r & I n s t a l l e r ( e n )
7690785.01 (1-05/18)
Dear Customer,
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expectations: good performance combined with simple and rational use.
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product.
Our company declares that these products are marked in compliance with the essential requirements of the
following Directives:
- Gas regulation (EU) 2016/426
- (I¿FLHQF\'LUHFWLYH92/42/EEC
- Electromagnetic Compatibility Directive 2014/30/EU
- Low Voltage Directive 2014/35/EU
-Ecodesign directive 2009/125/EC
-Regulation (EU) No 2017/1369 (for boilers with Power<70kW)
-Ecodesign regulation (EU) No 813/2013
-Energy labelling regulation (EU) No 811/2013 (for boilers with Power<70kW)
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.
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CONTENT
DESCRIPTION OF SYMBOLS .....................................................................................................................................................................26
SAFETY WARNINGS....................................................................................................................................................................................26
GENERAL PRECAUTIONS .........................................................................................................................................................................27
ENERGY-SAVING TIPS................................................................................................................................................................................27
1. COMMISSIONING THE BOILER..................................................................................................................................................................28
1.1 ADJUSTING THE CH AND DHW FLOW TEMPERATURE ..........................................................................................................................28
1.2 OPERATING MODES ...................................................................................................................................................................................28
2. PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION .......................................................................................................................29
3. GAS CONVERSION .....................................................................................................................................................................................29
4. FAULTS.........................................................................................................................................................................................................29
5. BOILER INFORMATION MENU ...................................................................................................................................................................30
6. FILLING THE SYSTEM.................................................................................................................................................................................30
7. ROUTINE MAINTENANCE INSTRUCTIONS...............................................................................................................................................30
8. SWITCHING OFF THE BOILER ...................................................................................................................................................................30
9. INSTALLING THE BOILER ...........................................................................................................................................................................31
9.1 BOILER PUMP..............................................................................................................................................................................................31
10. INSTALLING THE DUCTS............................................................................................................................................................................32
10.1 CONCENTRIC DUCTS.................................................................................................................................................................................32
10.2 SEPARATE DUCTS ......................................................................................................................................................................................32
10.3 CASCADE FLUES ........................................................................................................................................................................................33
11. ELECTRICAL CONNECTIONS.....................................................................................................................................................................33
11.1 CONNECTING THE ROOM THERMOSTAT.................................................................................................................................................34
11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY.....................................................................................................................................34
12. INITIAL IGNITION - SPECIAL FUNCTIONS.................................................................................................................................................37
12.1 SYSTEM GAS EXTRACTION FUNCTION ...................................................................................................................................................37
12.2 CALIBRATION FUNCTION...........................................................................................................................................................................37
12.3 CHIMNEY SWEEPER...................................................................................................................................................................................37
13. FAULTS THAT CANNOT BE RESET BY THE USER ...................................................................................................................................37
14. PARAMETERS SETTING .............................................................................................................................................................................38
15. GAS VALVE CALIBRATION..........................................................................................................................................................................40
15.1 GAS CONVERSION .....................................................................................................................................................................................40
16. ADJUSTMENT AND SAFETY DEVICES......................................................................................................................................................41
17. PUMP CAPACITY/ HEAD .............................................................................................................................................................................41
18. ANNUAL SERVICING ...................................................................................................................................................................................42
18.1 CLEANING THE CONDESATE TRAP ..........................................................................................................................................................42
18.2 CLEANING THE HEAT EXCHANGER FUMES SIDE...................................................................................................................................42
18.3 CHECKING THE BURNER...........................................................................................................................................................................43
18.4 COMBUSTION PARAMETERS ....................................................................................................................................................................43
19. THERMAL FUSE REPLACEMENT OF HEAT EXCHANGER.......................................................................................................................44
20. DISMANTLING, DISPOSAL AND RECYCLING ...........................................................................................................................................44
21. TECHNICAL SPECIFICATIONS ...................................................................................................................................................................45
22. TECHNICAL PARAMETERS ........................................................................................................................................................................46
23. PRODUCT FICHE.........................................................................................................................................................................................47

7690785.01 (1-05/18) 26
U s e r & I n s t a l l e r ( e n )
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.
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).
• 3XWRXWDQ\QDNHGÀDPHVDQGRSHQWKHZLQGRZV
• 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
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SERVICING AND CLEANING THE BOILER
Switch off the boiler before working on it.
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BAXI a leading European manufacturer of hi-tech boilers and heating systems, has developed
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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.

27
U s e r & I n s t a l l e r ( e n )
7690785.01 (1-05/18)
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.
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• 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 data label on the appliance.
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more than one appliance, in compliance with current laws and regulations.
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• To ensure correct operation and maintain the warranty, observe the following precautions:
1. DHW circuit
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equivalent treatment system, compliant with current regulations.
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1.3 The materials used for the DHW circuit comply with Directive 98/83/EC.
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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' instructions.
([LVWLQJV\VWHP 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).
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• 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.
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> 40 kW).
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ENERGY-SAVING TIPS
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WHPSHUDWXUHRIDSSUR[LPDWHO\&DQGLQFUHDVHWKLVYDOXHLIWKHUHTXLUHGURRPWHPSHUDWXUHLVQRWUHDFKHG)RUV\VWHPVZLWK
UDGLDQWÀRRUSDQHOVGRQRWH[FHHGWKHWHPSHUDWXUHLQGLFDWHGE\WKHV\VWHPGHVLJQHU8VHWKH([WHUQDO6HQVRUDQGRU&RQWURO
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heat than that effectively necessary is produced. Use room thermostats to adjust the 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
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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.
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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.

7690785.01 (1-05/18) 28
U S E R S e c t i o n ( e n )
1. COMMISSIONING THE BOILER
To light the boiler correctly, proceed as follows:
• &KHFNWKDWWKHV\VWHPSUHVVXUHLVFRUUHFWVHFWLRQ
• 3RZHUWKHERLOHU
• 2SHQWKHJDVWDS\HOORZSRVLWLRQHGXQGHUWKHERLOHU
• Select the required heating mode (section 1.2).
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,QWKLVFDVHUHSHDWWKHLJQLWLRQSURFHGXUHXQWLOJDVUHDFKHVWKHEXUQHU7RUHVHWERLOHURSHUDWLRQSUHVV for at least 2
seconds.
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DHW temperature adjustment
(+to increase the temperature and – to decrease it)
Heating water temperature adjustment
(+to increase the temperature and – to decrease it)
Boiler operating information
Operating mode:
'+:±'+:+HDWLQJ±+HDWLQJ2QO\
Off – Reset – Exit menu/functions
.H\WR6<0%2/6
Off: heating and DHW disabled
(only boiler anti-freeze protection is active) Burner lit
Fault preventing the burner from lighting DHW operating mode enabled
Boiler/system water pressure low Heating mode enabled
Technical Service Centre call-in Programming menu
Manually resettable fault ( ) Boiler information menu
Fault in progress Set unit of measurement (SI/US)
1.1 ADJUSTING THE CH AND DHW FLOW TEMPERATURE
Press and UHVSHFWLYHO\WRDGMXVWWKH&+DQG'+:ÀRZWHPSHUDWXUHLIDQH[WHUQDOVWRUDJHERLOHULV¿WWHG:KHQ
the burner is lit, the display shows the symbol .
HEATINGZKLOHWKHERLOHULVRSHUDWLQJLQWKHKHDWLQJPRGHWKHGLVSOD\VKRZVWKHÀDVKLQJV\PERO and the heating delivery
WHPSHUDWXUH&
When connected to an External Sensor, LQGLUHFWO\DGMXVWWKHURRPWHPSHUDWXUHIDFWRU\VHWWLQJ&
DHW: connect an external storage boiler to produce domestic hot water. While the boiler is operating in the DHW mode, the
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1.2 OPERATING MODES
SYMBOL
DISPLAYED OPERATING MODE To enable the appliance in DHW - +HDWLQJor +HDWLQJRQO\ press repeatedly
and choose one of the three available modes.
To disable the boiler operating modes whilst keeping the anti-freeze function
enabled, press . Just the symbol appears on the display (with the boiler
not blocked).
DHW
DHW & HEATING
HEATING ONLY









29
U S E R S e c t i o n ( e n )
7690785.01 (1-05/18)
2. PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION
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boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add some
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boiler management system includes a “frost protection” function for the heating system which, when delivery temperature falls
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3. 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.
4. FAULTS
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complete list of faults, see the following table.
If appears on the display the fault must be RESET by the user.
To RESET the boiler, press . If faults are displayed frequently, call the Authorised Service Engineer.
Description of fault Description of fault
10 External probe sensor 128 1RÀDPH
20 17&ÀRZVHQVRU 130 Fumes NTC tripped due to overtemperature
28 NTC fumes sensor 133 Ignition failure (4 attempts)
40 17&ÀRZVHQVRU 151 Boiler board internal fault
50 NTC DHW sensor
(only for heating-only model with storage boiler) 152 Generic parameter setting error
52 Solar DHW sensor (if connected to a solar plant) 153
Forced reset when the Reset button is pressed and held
for more than 10 seconds (see section “FAULTS THAT
CANNOT BE RESET BY THE USER”)
73 Solar manifold sensor (if connected to a solar plant) 160 Fan fault
83 Communication problem between boiler board and control
unit. Probable short circuit on wiring. 162 Flue pressure switch action (see section “FAULTS THAT
CANNOT BE RESET BY THE USER”)
84 $GGUHVVFRQÀLFWEHWZHHQFRQWUROXQLWV
(internal fault) 321 NTC domestic hot water sensor faulty
98 Accessory not detected or recognized (*) 343 Generic parameter setting error of solar plant
(if connected to a solar plant)
109 Air in boiler circuit (temporary fault) 384 $EQRUPDOOLJKWSDUDVLWHÀDPH±LQWHUQDOIDXOW
110
6DIHW\WKHUPRVWDWWKHUPDOIXVHH[FKDQJHUÀDQJHWKHUPRVWDW
(**) tripped due to over temperature (pump probably blocked
or air in heating circuit)
385 Input voltage too low
111 Safety thermostat tripped due to overtemperature. 386 Fan speed threshold not reached
117 Pressure in hydraulic circuit too high 430 No circulation safety trip
(control performed via a pressure sensor)
118 Pressure in hydraulic circuit too low 432 No functional hearth or safety thermostat tripped due to
over temperature (E110)
125 No circulation safety trip
(control performed via a temperature sensor)
(*) After powering up the boiler (or after a Reset for lockout), the error appears on the display once the self-check is completed. The fault code
is displayed permanently if the accessory is not recognized.
(**) See Section “ADJUSTMENT AND SAFETY DEVICES”.
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ERLOHUVKXWVGRZQ:DLWPLQXWHVEHIRUHDWWHPSWLQJWRUHVHWWKHERLOHUDJDLQ

7690785.01 (1-05/18) 30
U S E R S e c t i o n ( e n )
5. BOILER INFORMATION MENU
Press to display the information indicated in the following table. Press to exit.
Description Description
00 SW Diagnostic Code 12 Ion current
01 +HDWLQJÀRZWHPSHUDWXUH 13 Burner working hours
02 2XWGRRUWHPSHUDWXUHLIWKHRXWGRRUVHQVRULV¿WWHG 14 Zone 1 heating mode
03 ([WHUQDOVWRUDJHWDQNWHPSHUDWXUH¿WWHGPRGHOV 15 Zone 2 heating mode
04 '+:WHPSHUDWXUH¿WWHGPRGHOV 16 DHW circuit operating mode
05 Water pressure in heating system 17 Boiler operating mode
06 Heating return temperature 18 Solar plant operating mode
07 Flue sensor temperature 19 Manufacturer information
08 Not used 20 Manufacturer information
09 Solar collector temperature 21 Gas energy consumption in HEATING
10 =RQHKHDWLQJÀRZWHPSHUDWXUH 22 Gas energy consumption in DHW
11 =RQHKHDWLQJÀRZWHPSHUDWXUH 23 Gas energy consumption in HEATING + DHW
Items 21, 22 and 23 are displayed alternatively with the gas energy consumption value expressed in millions, thousands and units
of kWh. e.g.: 21 / 033 / 145 / 827 corresponds to a gas energy consumption in HEATING of 33.145.827 kWh.
6. FILLING THE SYSTEM
Periodically check that the pressure displayed on the pressure gauge is 1 - 1.5 bar, when the system water temperature is cold. If
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,ISUHVVXUHGURSVRFFXUIUHTXHQWO\KDYHWKHERLOHUFKHFNHGE\WKH$87+25,6('7(&+1,&$/6(59,&(&(175(
7. ROUTINE MAINTENANCE INSTRUCTIONS
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Careful servicing ensures economical operation of the system.
8. SWITCHING OFF THE BOILER
To turn off the boiler, disconnect the electric power supply using the two-pole switch. In the “Off” operating mode the boiler stays
off but the electrical circuits remain powered and the anti-freeze function remains active.

31
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
INSTRUCTIONS PRIOR TO INSTALLATION
The following notes and 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
standards and local by-laws and technical regulations.
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formation of ice in the siphon and in the condensation drain
• The boiler can be used with any kind of convector plate, radiator or thermoconvector. Design the system sections as usual,
though, bearing in mind the available capacity-head at the plate (see annex "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).
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+<'5$8/,&6(3$5$7257KHVHPXVWEHPRXQWHGE\WKHLQVWDOOHU
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9. INSTALLING THE BOILER
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in order to prevent the formation of air inside the primary circuit until
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IURPGLIIXVLQJLQWKHURRP
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manual.
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Connect the system to the gas and water inlets present on the lower bar of
the template. Make sure the rear part of the boiler (back) is as parallel as
possible to the wall (otherwise, shim the lower part). Fit two G1-1/2" taps
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carry out important operations on the system without draining it completely.
On the Italian market, the system must comply with Raccolta R safety
provisions (limit thermostat, safety pressure switch, fuel cut-off valve, etc..).
Fit a hydraulic separator, sized according to maximum boiler and system
pressure, downline from the hydraulic connectors of the boiler. If you are
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an external storage boiler.
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9.1 BOILER PUMP
The boiler pump (15 - "SECTION" A) is modulating and circulates the water between the boiler and the hydraulic separator (for
hydraulic performance see the charts in annex "SECTION" E). The water in the system is circulated by the relative pumps (see
section 11.2.3).
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Model 0LQLPXPÀRZUDWHOK 2SHUDWLQJÀRZUDWHOKZLWK%$;,K\GUDXOLFVHSDUDWRU
1.115 - 1.130 2250 5400
1.150 3150 5600
7221178.01
1
2
3

7690785.01 (1-05/18) 32
I N S TA L L E R S e c t i o n ( e n )
10.INSTALLING THE DUCTS
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accessories, as described below. The boiler has been designed for connection to a
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ducts using the accessory splitting kit.
WARNINGS
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instructions are provided with the individual accessories.
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)RU RSWLPDO LQVWDOODWLRQ WKH DFFHVVRULHV VXSSOLHG E\ WKH PDQXIDFWXUHU VKRXOG
EHXVHG
TABLE 1A
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the table to the side.
¨33D
1.115 - 1.130 180
1.150 270
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620( 287/(7 '8&7 ,167$//$7,21 (;$03/(6 $1' 7+(,5 5(/$7,9( 0$;,080 /(1*7+6 $5( 6+2:1 ,1 $11(;
"SECTION" D$77+((1'2)7+,60$18$/
10.1CONCENTRIC DUCTS
This type of duct is used to discharge exhaust fumes and draw
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can also be used as a supplementary curve combined with a
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duct must protrude at least 18 mm from the wall to allow an
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10.2SEPARATE DUCTS
This type of installation makes it possible to discharge exhaust
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Comburent air can be drawn in at a different location from that
RIWKHÀXHWHUPLQDO7KHDFFHVVRU\VSOLWWLQJNLWFRPSULVHVDÀXH
duct adaptor Ø 110 mm (B) and an air duct adaptor Ø 110 mm
(A)RUWKHDLUGXFWDGDSWRU¿WWKHVFUHZVDQGVHDOVSUHYLRXVO\
removed from the cap.
7KH  EHQG LV XVHG WR FRQQHFW WKH ERLOHU WR WKH LQOHW DQG
outlet ducts, adapting them to various requirements. It can also
be used as a supplementary curve combined with a duct or a
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• 7KH¿UVWEHQGLVQRWLQFOXGHGZKHQFDOFXODWLQJWKHPD[LPXPDYDLODEOHOHQJWK
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33
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
10.3CASCADE FLUES
This type of duct evacuates the products of combustion of more than one boiler in a cascade connection through a shared fumes
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diameters available are: Ø160 mm and double diameter Ø160/250 mm. A range of accessories is available on request.
TABLE 1B
BOILER
MODEL
MAXIMUM NUMBER OF BOILERS
IN CASCADE CONNECTION
PARAMETER P60
Revs/min (rpm) at
minimum Power
Ø 160 mm Ø 160/250 mm G20 G31
1.115 - 1.130 2 4 1850 2000
1.150 2 4 1850 2000
,Q WKLV RXWOHW W\SRORJ\ D IXPHV FODSHW YDOYH QRUHWXUQ YDOYH   PP PXVW EH ¿WWHG WR HDFK ERLOHU &KDQJH WKH
SDUDPHWHU3DVVKRZQLQWDEOH%IROORZLQJWKHSURFHGXUHGHVFULEHGLQFKDSWHU
7KH ÀXH KHDGHU VL]H PXVW EH FDOFXODWHG E\ D TXDOL¿HG WHFKQLFLDQ GXULQJ WKH V\VWHP GHVLJQ VWDJH DV UHTXLUHG E\ FXUUHQW
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11.ELECTRICAL CONNECTIONS
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regulations. Connect the boiler to a 230V single-phase earthed power supply using the supplied three-pin cable, observing correct
Live-Neutral polarity.
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:KHQUHSODFLQJWKHSRZHUVXSSO\FDEOH¿WDKDUPRQLVHG³+$5+99)´[PP2cable with a maximum diameter of 8 mm.
7RDFFHVVWKHWHUPLQDOEORFNUHPRYHWKHIURQWERLOHUSDQHO¿[HGZLWKWZRVFUHZVDWWKHERWWRPWXUQWKHFRQWUROER[GRZQZDUGV
and access terminal blocks 000, used for the electrical connections, after removing the protective cover. The 3.15 A fast-
blowing fuses are incorporated in the power supply terminal block (to check and/or replace the fuse, pull out the black fuse carrier).
SEE WIRING DIAGRAM IN ANNEX "SECTION" B AT THE END OF THIS MANUAL
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DUHOD\EHWZHHQWKHDFFHVVRULHVDQGWKHHOHFWURQLFERDUG
7KHFRQQHFWLRQVLQWHUPLQDOEORFNV00DUHKLJKYROWDJH9%HIRUHPDNLQJFRQQHFWLRQVPDNHVXUHWKHDSSOLDQFHLV
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TERMINAL BLOCK M1
(L) /LYH (brown)
(N) Neutral (light blue).
 Earth (yellow-green).
(1) (2) FRQWDFWIRURoom Thermostat.
Put back the jumper on terminals 1-2 of boiler terminal block
0LIWKHURRPWKHUPRVWDWLVQRWXVHGRULIWKH5HPRWH&RQWURO
VXSSOLHGDVDQDFFHVVRU\LVQRWLQVWDOOHG
TERMINAL BLOCK M2
7HUPLQDOVEDFNOLJKWLQJHDUWK9 connection to the
Remote Control (low voltage) supplied as an accessory.
7HUPLQDOVFRPPRQ External Probe connection (supplied as
an accessory)
7HUPLQDOV    FRPPRQ 2nd Auxiliary Probe (probes for solar
plant, cascade system, etc.).
7HUPLQDOV    FRPPRQ 1st Auxiliary Probe (probes for solar
plant, cascade system, etc.).
7HUPLQDOV storage boiler sensor connection.
7HUPLQDO not used.
11
99
88
77
66
55
44
33
22
1010
11
77
66
55
44
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22
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7690785.01 (1-05/18) 34
I N S TA L L E R S e c t i o n ( e n )
TERMINAL BLOCK M3
Terminal 1-2: (230Vac - max 1A) power supply of modulating boiler pump (PWM)
Terminal 2-3: (max 1A) power supply of non-modulating boiler pump (ON - OFF)
Terminal 4: not used
Terminal 5-6: PWM signal of the modulating pump
Terminal 7-8: not used
Terminal 9 - 10: Domestic Hot Water tank pump
Terminal 11 - 12: Heating System pump (device connected downstream of the hydraulic separator)
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11.1CONNECTING THE ROOM THERMOSTAT
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To connect the Room Thermostat to the boiler, proceed as described below:
• 6ZLWFKRIIWKHERLOHU
• Access the terminal block M1
• Remove the jumper from the ends of contacts 1-2 and connect the wires
RIWKHYROWIUHH5RRP7KHUPRVWDW
• Switch on the boiler and make sure the Room Thermostat works correctly.
11.2ACCESSORIES NOT INCLUDED IN THE SUPPLY
11.2.1 REMOTE CONTROL
7KHZLUHIURPWKHERLOHUWHUPLQDOEORFN0SRZHUVWKHGLVSOD\EDFNOLJKWLQJ9,WLVQRWQHFHVVDU\WRFRQQHFWWKLVZLUHWR
PDNHWKH5HPRWH&RQWUROZRUN
To operate the boiler with the Remote Control mounted on the wall, purchase accessory Asupplied with the base A1. Also see
the mounting and operation instructions supplied with the kit A. Proceed as follows:
• Switch off the boiler.
• Pass the three wires from the boiler terminal block M2 through the hole in the base A1 to apply to the wall.
• Connect wires 1-2-3 of the boiler terminal block M2 to terminals (1)-(2)-(3) of the base terminal block A1 respectively.
• Fix the base A1 to the wall using the expansion grips and screws supplied with the accessory.
• Apply the Control Panel AWRWKHEDVH¿[HGWRWKHZDOOWDNLQJFDUHQRWWRDSSO\H[FHVVLYHIRUFH
• Power the boiler making sure that the Remote Control lights up.
A1
AA - A1
A
A1 A1 A
B
B1
B
B1
AControl Panel A1 Base for wall-mounted Control Panel
BLed interface accessory B1 Base for Led interface accessory
(1) Display backlighting +12V (2) Earth connection (3) Power input/Signal +12V
Min. 200 mm
1500mm

35
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
8VHWKH5HPRWH&RQWUROWRVHWWKHSURJUDPPDEOHWLPHUIRUKHDWLQJDQG'+:6HHWKHLQVWUXFWLRQVVXSSOLHGZLWKWKHDFFHVVRU\
SETTING PARAMETERS USING THE REMOTE CONTROL
SYMBOLS FOR REMOTE CONTROL
Turn knob BDisplay shows
Press knob BPress button Aand knob Btogether
Press button Aor CPress buttons A and Ctogether
KEY TO FIGURE MENU
1Enduser 3Engineer
2Commissioning 4OEM
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'2:1,17+(7$%/($77+((1'2)7+,60$18$/
The following procedure is used to access the four boiler
programming menus:
• from the main menu C.
• Aand C(hold down for approx. 6 seconds)
Bmenu 1-2-3-4VHH¿JXUHWRVLGHDQGNH\
• C to go back one menu at a time to the main menu.
When the Control Panel is wall-mounted enable the room
sensor and ÀRZWHPSHUDWXUHPRGXODWLRQ as follows:
A) ROOM SENSOR
• Access menu 2.
• BOperator unit BWRFRQ¿UP
• B programme row 40 (Used as) B.
• B (anti-clockwise) Room unit 1 BWRFRQ¿UPWKHURRPVHQVRULVQRZDFWLYH
• Cto return to the previous menu then B&RQ¿JXUDWLRQ B.
• Bprogramme row 5977 (Function input H5) then BWRFRQ¿UP
• B None BWRFRQ¿UP
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B) FLOW TEMPERATURE MODULATION
7RVHWÀRZWHPSHUDWXUHPRGXODWLRQGLVDEOHSDUDPHWHU742 (HC1). Proceed as follows:
• Access menu 2.
• BTemps / mode CH1 BWRFRQ¿UP B742 (Flow temp setpoint room stat) BWRFRQ¿UP
• B(anti-clockwise) "---" then BWRFRQ¿UP
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temperature, parameter 742KDVQRWEHHQVHWFRUUHFWO\
$IWHU HYHU\ V\VWHP FRQ¿JXUDWLRQ HJ VRODU FRPELQDWLRQ FRQQHFWLRQ DQ H[WHUQDO VWRUDJH ERLOHU HWF SHUIRUP WKH IROORZLQJ
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• Access menu 2 as indicated at the beginning of this section.
• B&RQ¿JXUDWLRQ B Bprogramme row 6200 then B.
• BYes then BWRFRQ¿UP
ZONE SYSTEM WITH INSTALLATION OF THE REMOTE CONTROL
The electrical connection and the adjustments required to manage a system divided into zones with use of the Remote Control
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Module supplied as an accessory.
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  

7690785.01 (1-05/18) 36
I N S TA L L E R S e c t i o n ( e n )
ADJUSTING THE TEMPERATURE OF THE HIGH TEMPERATURE HEATING SYSTEM
To avoid frequent starting and stopping, raise the minimum temperature setpoint of the boiler in the heating mode by setting
parameters 740WRQRWOHVVWKDQ&XVLQJWKHSURFHGXUHGHVFULEHGLQSRLQWB.
TEMPERATURE ADJUSTMENT ON LOW TEMPERATURE HEATING SYSTEM
)RUDORZWHPSHUDWXUHV\VWHPVXFKDVXQGHUÀRRUKHDWLQJUHGXFHWKHPD[LPXP&+WHPSHUDWXUHVHWSRLQWRQWKHERLOHUE\VHWWLQJ
parameter 741 (point B)WRDYDOXHQRWJUHDWHUWKDQ&
11.2.2 EXTERNAL SENSOR
7RFRQQHFWWKLVDFFHVVRU\VHH¿JXUHWRVLGHWHUPLQDOV4-5) and
the instructions supplied with the sensor.
With the External Sensor connected, on the boiler
control panel move the set climate curve Kt in parallel (see
annex "SECTION" E and parameter P03 in the table in section
14). To increase room temperature press +, to decrease press -.
SETTING THE "Kt" CLIMATE CURVE
To set the required kt climate curve, proceed as follows:
• Access the menu as described in section 14.
• Select parameter P03.
• Select the climate curve from among those available, see the curve chart in annex "SECTION" E at the end of this manual
(the preset curve is 1.5).
KEY TO CURVE CHART Kt - "SECTION" E
Flow temp Outside temp
11.2.3 HEATING SYSTEM PUMP
Install the system pump downline from the hydraulic separator. Choose the pump according to the required system capacity/head
characteristics (see annex "SECTION" F).
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11.2.4 EXTERNAL STORAGE BOILER
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 storage boiler pump to terminals 9-10 of the M3 terminal block (see annex
"SECTION" B). Install the storage boiler downline from the hydraulic separator. Use the sensor supplied as an accessory and
connect it to terminals 9-10 of terminal block M2 (see annex "SECTION" B). Make sure that the exchange capacity of the storage
boiler coil is appropriate for the power of the boiler.
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EXTERNAL SYSTEM MANAGEMENT MODULES
The boiler can independently manage up to three heating circuits by using external accessories such as room units, remote
controls and external modules (AGU 2.550, AVS 75.391 and AVS 75.370). The boiler electronics also comprises a wide range of
functions for personalising and managing various system types. To assure correct system operation, a number (from 1 to 3) must
be assigned to each accessory in order to allow the boiler board to recognise it. Consequently, carefully read the instructions
provided with the accessories. The external module AVS 75.370 can be used to control modulation of 2 pumps: a zone pump and/
or the storage boiler pump.
11.2.5 MIXED ZONES ("SECTION" F)
A mixed zone can be managed using the AVS75 external module, supplied as an accessory. This accessory can manage: a zone
pump, a mixing valve, a temperature sensor, a limit thermostat and a room thermostat. To connect the components and adjust the
system read the manual provided with the accessory.
11.2.6 BOILERS IN A CASCADE CONNECTION ("SECTION" F)
The AVS75 external unit, supplied as an accessory, is used to manage a heating system with up to 16 boilers connected in a
cascade arrangement and a possible separate storage boiler providing domestic hot water. This accessory, connected to one of
the cascade boilers, can directly control the circuit components up to a maximum of 3 independent relay outlets, 2 temperature
sensors, 1 high voltage limit thermostat connector and one 1 control input (e.g.: room thermostat). The system also requires an
OCI 345 interface on each boiler comprising in the cascade arrangement. To adjust boiler parameters see section "PARAMETER
SETTINGS". To connect the components and adjust the system read the manual provided with the accessory.
11.2.7 SOLAR PLANT ("SECTION" F)
Use the AGU 2.550 external unit, supplied as an accessory, to manage a solar plant. To connect the plant, see the instructions
supplied with the accessory.
7+(+<'5$8/,&',$*5$062)7+(&$6(6'(6&5,%('&$1%(&2168/7(',1$11(;6(&7,21)$77+((1'2)
7+,60$18$/
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
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

37
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
12.INITIAL IGNITION - SPECIAL FUNCTIONS
When the boiler is powered up, the code “311” appears on the display and the boiler is ready for “initial ignition”.
Follow the procedure “GAS EXTRACTION FUNCTION” as described in the section below and enable programme 312.
After this operation, the boiler is ready to ignite the burner.
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12.1SYSTEM GAS EXTRACTION FUNCTION
7KLV IXQFWLRQ LV XVHG WR IDFLOLWDWH WKH HOLPLQDWLRQ RI WKH DLU LQVLGH WKH KHDWLQJ FLUFXLW ZKHQ WKH ERLOHU LV ¿UVW LQVWDOOHG RU DIWHU
maintenance when the water is drained from the primary circuit.
To enable the system gas extraction function press buttons together for 6 seconds. When the function is active, On
appears on the display for a few seconds, followed by programme row 312.
The electronic board will activate a pump on/off cycle lasting 10 minutes. The function will automatically stop at the end of the
cycle. To manually exit this function, press the above buttons together for 6 seconds once again.
12.2CALIBRATION FUNCTION
To calibrate the gas valve, proceed as follows:
• Press buttons and together for at least 6 seconds. When the function is enabled, the displays shows “On” for a few
seconds followed by programme row “304” alternated with the % of boiler power.
• Press to gradually adjust power (sensitivity 1%).
• To exit press both buttons together for at least 6 seconds, as described in point one
Press WRGLVSOD\WKHLQVWDQWDQHRXVÀRZWHPSHUDWXUHIRUVHFRQGV
12.3CHIMNEY SWEEPER
When this function is enabled, the boiler generates maximum heating power. To enable the function, proceed as follows:
• press together for 6 seconds. The display shows "303" alternated with the power output of the boiler.
• Press and to adjust boiler power 1 PLQLPXP2 PD[LPXP'+:3 PD[LPXPKHDWLQJ
• To interrupt the function repeat the procedure described in point one.
13.FAULTS THAT CANNOT BE RESET BY THE USER
In case of FAULTS that cannot be reset by pressing (such as E151, E162 or exceeding
5 manual RESET attempts by the user) RESET the board by pressing the black button ( R)
located under the rubber cap (symbol RIWKHIURQWFRQWUROSDQHO¿JXUHWRVLGH






7690785.01 (1-05/18) 38
I N S TA L L E R S e c t i o n ( e n )
14.PARAMETERS SETTING
To programme the parameters of the boiler electronic board, proceed as follows:
• Press together and hold them down for 6 seconds until programme row “P02” appears on the display alternated with
WKHVHWYDOXH&
• Press and hold down for 6 seconds until "On" appears on the display. Release the button and "P01DSSHDUVRQWKHGLVSOD\
• Press WRVFUROOWKHOLVWRISDUDPHWHUV
• Press WKHYDOXHRIWKHVHOHFWHGEHJLQVÀDVKLQJSUHVV WRFKDQJHWKHYDOXH
• press WRFRQ¿UPWKHYDOXHRUSUHVV to exit without saving.
)XUWKHU LQIRUPDWLRQ FRQFHUQLQJ WKH SDUDPHWHUV OLVWHG LQ WKH IROORZLQJ WDEOH DUH VXSSOLHG WRJHWKHU ZLWK WKH UHTXLUHG
accessories.
(a) (b) =21(+($7,1*3$5$0(7(56PDLQ]RQH )DFWRU\
VHWWLQJ Minimum Maximum
P01 700 2SHUDWLQJPRGH )URVW3URWHFWLRQ 7LPHG 7FRPIRUW -30 3
P02 712 *Reduced ambient temperature & 16 4 35
P03 720 *“Kt” curve slope -  0,1 4
P04 721 *“Kt” curve drift - 0- 4,5 4,5
P05 726 ³.W´FXUYHDGDSWDWLRQ RII -10 1
P06 740 Flow temperature setpoint (minimum value) & 25 8 80
P07 741 Flow temperature setpoint (maximum value) & 80 25 80
P08 742 (QDEOHPRGXODWLQJWHPSHUDWXUHLIVHW ³´ & 80 25 80
P09 750 5RRPLQÀXHQFH³´ GLVDEOHG %50 1 100
P10 834 *Opening/Closing speed of mix valve S 30 30 873
=21(+($7,1*3$5$0(7(56ZLWKDFFHVVRU\([SDQVLRQ8QLW
P11 1000 2SHUDWLQJPRGH )URVW3URWHFWLRQ 7LPHG 7FRPIRUW & 30 3
P12 1010 *Comfort room temperature & 20 4 35
P13 1012 *Reduced room temperature & 16 4 35
P14 1020 *“Kt” curve slope -  0,1 4
P15 1021 *“Kt” curve drift - 0- 4,5 4,5
P16 1026 ³.W´FXUYHDGDSWDWLRQ RII -10 1
P17 1040 Flow temperature setpoint (minimum value) & 25 8 80
P18 1041 Flow temperature setpoint (maximum value) & 80 25 80
P19 1042 (QDEOHPRGXODWLQJWHPSHUDWXUHLIVHW ³´ÀRZWHPSVHWSRLQWLI3  & 80 25 80
P20 1050 5RRPLQÀXHQFH³´ GLVDEOHG %50 1 100
P21 1134 *Opening/Closing speed of mix valve s 30 30 873
DHW PARAMETERS
P22 1620
Operating mode in DHW (with Remote Control)
-20 2 DOZD\VHQDEOHG DFFRUGLQJWRKRXUO\KHDWLQJSURJUDPPH
 DFFRUGLQJWRKRXUO\'+:SURJUDPPH
P23 1640 Anti-legionella function Disabled -00 1
 GLVDEOHG SHULRGLFGHSHQGLQJRQ3
P24 1641 3HULRGLFDQWLOHJLRQHOODIXQFWLRQHQDEOHRQO\LI3  -71 7
 GDLO\ LQWHUYDOVRIGD\V RQFHDZHHN
P25 1663 Circulation temperature setpoint (additional DHW pump) & 45 8 80
P26 5470 3UHKHDWLQJWLPHIRU'+:FLUFXLW ¶ ¶ min 00 144
%2,/(53$5$0(7(56
P27 2243 Minimum boiler off time min 30 20
P28 2217 Frost Protection setpoint & 5-20 20
P29 2250 Pump post-circulation time min 30 240
P30 2441 Max. fan speed (heating) rpm xxx 0 8000
P31 2455 Minimum boiler off differential & 50 20
P32 2720 Not used (Do NOT change this parameter) - 00 1
P33 2721 Not used (Do NOT change this parameter) - 11 2
62/$53/$173$5$0(7(56ZLWKDFFHVVRU\([SDQVLRQ8QLW
P34 3810 Temperature - on differential & 80 40
P35 3811 Temperature - off differential & 40 40
P36 3830 3XPSVWDUWIXQFWLRQ³´ GLVDEOHG min --- 5 60
P37 3850 6RODUSDQHOPDQLIROGRYHUKHDWLQJSURWHFWLRQ³³ GLVDEOHG & --- 30 350
P38 5050 DHW boiler tank charging temperature max & 65 8 95
P39 5051 Maximum temperature of storage tank & 90 8 95

39
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
&21),*85$7,21
P40 5700 Not used (Do NOT change this parameter) - --- --- ---
P41 5710 =RQHKHDWLQJFLUFXLW HQDEOHG -10 1
P42 5715 =RQHKHDWLQJFLUFXLW HQDEOHG -00 1
P43 5730 '+:VHQVRU 7DQNVHQVRU 7KHUPRVWDW LQVWDQWDQHRXVVHQVRU 11 3
P44 5890 Not used (Do NOT change this parameter) - 33 0 43
P45 5931 %;VHQVRULQSXW¿UVWDX[LOLDU\VHQVRU±VHFWLRQ -00 19
P46 5932 *BX3 sensor input (second auxiliary sensor – section 11) - 00 19
P47 5977 ,QSXW+PXOWLIXQFWLRQLQSXW± 5RRPWKHUPRVWDW -18 0 32
P48 6020 &RQ¿JXUDWLRQRIDFFHVVRU\([SDQVLRQ8QLW -00 7
P49 6024 ,QSXW(;PRGXOHFRQ¿JXUDWLRQRI+&6DIHW\7KHUPRVWDW -00 1
P50 6046 Input H2 module 1 (multifunction input) - 00 58
P51 6097 6HQVRUW\SHFROOHFWRU 17& 3W -21 2
P52 6110 Building time constant (depending on the insulations of the building) h 15 0 50
P53 6220 Software version - --- 0 99
P54 6600 LPB device address (BUS connection) - 1 16
P55 6601 LPB segment address (BUS connection) - 0 14
P56 6640 Clock time source - 0 3
0$,17(1$1&(
P57 7045 Time after maintenance month xxx 0 240
P58 6704 9LHZ+LGHVHFRQGDU\IDXOWLQWHUQDOFRGH QR -10 1
%851(5&21752/
P59 9512 Required ignition speed rpm xxx 0 8000
P60 9524 Required minimum operating speed (low speed) rpm xxx 0 8000
P61 9529 Required maximum operating speed (high speed) rpm xxx 0 8000
%2,/(5&21752/3$1(/3$5$0(7(56
P62 - 8QLWRIPHDVXUHPHQW EDU&± 36,) -11 2
P63 - &RQWUROSDQHORSHUDWLRQ FHQWUDO ORFDO -10 1
P64 - Software version -xx 0 999
*VHH³$FFHVVRULHVQRWLQFOXGHGLQVXSSO\´
xxWKHYDOXHGHSHQGVRQWKHVRIWZDUHYHUVLRQxxxWKHYDOXHGHSHQGVRQWKHW\SHRIERLOHU
(a)SDUDPHWHUVUHDGRQWKHIURQWERLOHUSDQHO¿[HGFRQWUROSDQHOE: parameters read on the Remote Control

7690785.01 (1-05/18) 40
I N S TA L L E R S e c t i o n ( e n )
15.GAS VALVE CALIBRATION
To calibrate the gas valve, enable the calibration function as described in section
12.2 and carry out the following operations:
&DOLEUDWLQJ0$;,080KHDWRXWSXW
Check that the /O2 PHDVXUHG RQ WKH ÀXH GXFW ZLWK WKH ERLOHU RSHUDWLQJ
at maximum heat capacity, matches that indicated in table 1C. If it does not,
remove the threaded cap on the gas valve and turn the adjustment screw (V).
Turn the screw clockwise to decrease the level of and anti-clockwise to
increase it.
&DOLEUDWLQJ5('8&('KHDWRXWSXW
Check that the /O2PHDVXUHGRQWKHÀXHGXFWZLWKWKHERLOHURSHUDWLQJDW
minimum heat capacity, matches that indicated in table 1C. If it does not, remove
the threaded cap on the gas valve and turn the adjustment screw (K). Turn the
screw clockwise to increase the level of and anticlockwise to decrease it.
V*DVÀRZDGMXVWPHQWVFUHZ Pi Gas supply pressure tap
KOFFSET adjustment screw
For each CO2/O2value found at the maximum thermal capacity, there is a
range of CO2/O2values at the minimum thermal capacity shown in the same
line of the table.
The nominal calibration values of the gas valve for each type of gas used are shown in bold.
The CO2/O2values are with the cover closed.
The maximum permitted CO value must be lower than 250 ppm.
TABLE 1C
G20 G31
CO2(%) O2(%) CO2(%) O2(%)
P max P min P max P min P max P min P max P min
9,7 8,8÷9,2 3,6 4,5÷5,2 10,5 10÷10,4 4,9 5,1÷5,7
9,6 8,7÷9,1 3,8 4,7÷5,4 10,4 9,9÷10,3 5,1 5,2÷5,8
9,5 8,6÷9 3,9 4,8÷5,6 10,3 9,8÷10,2 5,2 5,4÷6
9,4 8,5÷8,9 4,1 5÷5,7 10,2 9,7÷10,1 5,4 5,5÷6,1
9,3 8,4÷8,8 4,3 5,2÷5,9 10,1 9,6÷10 5,5 5,7÷6,3
 ·  · 10 ·  ·
9,1 8,2÷8,6 4,7 5,6÷6,3 9,9 9,4÷9,8 5,8 6÷6,6
9 8,1÷8,5 4,8 5,7÷6,5 9,8 9,3÷9,7 6,0 6,1÷6,7
8,9 8÷8,4 5 5,9÷6,6 9,7 9,2÷9,6 6,1 6,3÷6,9
8,8 7,9÷8,3 5,2 6,1÷6,8 9,6 9,1÷9,5 6,3 6,4÷7,1
8,7 7,8÷8,2 5,4 6,3÷7 9,5 9÷9,4 6,4 6,6÷7,2
15.1GAS CONVERSION
7RFRQYHUWRSHUDWLRQZLWKPHWKDQHJDV*WRRSHUDWLRQZLWKSURSDQHJDV
/3*¿UVWUHSODFHWKHQR]]OH$DVVKRZQLQWKH¿JXUHDQGWKHQFDOLEUDWH
WKHJDVYDOYHDVGHVFULEHGDERYH$IWHUZDUGVPDNHVXUHWKHUHDUHQRJDV
OHDNV0RGLI\WKHSDUDPHWHUVIDQUSPDVLQGLFDWHGLQWDEOHIROORZLQJWKHSURFHGXUH
described in section 14.
TABLE 2
PARAMETERS - rpm
GAS NOZZLE
Ø (mm)
P60* P30 - P61 * P59*
Boiler model Min. power Max. power Ignition power
G20 G31 G20 - G31 G20 G31 G20 G31
 1550 1950 5150 2500 2700 12 11
1.130 1550 1950 5800 2500 2700 12 11
 1800 2000 6900 2500 2700 12 11
* value read on the boiler front panel display to multiply x 10 (e.g.: 150 corresponds to 1500
rpm)
7RVLPSOLI\FDOLEUDWLRQRIWKHJDVYDOYHVHWWKH³FDOLEUDWLRQIXQFWLRQ´GLUHFWO\
RQWKHERLOHUFRQWUROSDQHODVGHVFULEHGLQVHFWLRQ
)RUFDVFDGHGXFWVFKDQJHWKHSDUDPHWHU3VHHWDEOH%LQFKDSWHU
7704153
7704154
A

41
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
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
7KDQNVWRDVHQVRUSODFHGRQWKH&+ÀRZOLQHWKLVWKHUPRVWDWLQWHUUXSWVWKHÀRZRIJDVWRWKHEXUQHULIWKHZDWHULQWKHSULPDU\
circuit overheats. Under such conditions the boiler is blocked and only after the fault has been eliminated can it be ignited again
by pressing .
• ([FKDQJHUÀDQJHWKHUPRVWDW&
7KLV GHYLFH LV ORFDWHG RQ WKH H[FKDQJHU ÀDQJH DQG LQWHUUXSWV WKH ÀRZ RI JDV WR WKH EXUQHU LI WKH IURQW LQVXODWLRQ \LHOGV DQG
RYHUKHDWVWKHH[FKDQJHURUWKHÀDQJHJDVNHWGHYHORSVDIDXOW3UHVVWKHUHVHWEXWWRQRQWKHWKHUPRVWDWHOLPLQDWHWKHIDXOWDQG
then press the reset button on the boiler control panel.
• Thermal fuse
7KLVGHYLFHLVORFDWHGDWWKHUHDURIWKHH[FKDQJHUDQGLQWHUUXSWVWKHÀRZRIJDVWRWKHEXUQHULIWKHUHDULQVXODWLRQ\LHOGVDQG
overheats the exchanger. If this device cuts in, dismount the exchanger and replace the thermal fuse (see paragraph “THERMAL
FUSE REPLACEMENT OF HEAT EXCHANGER”).
It is forbidden to disable this safety device.
• 17&ÀXHVHQVRU
7KLVGHYLFHLVSRVLWLRQHGRQWKHIXPHVGXFW7KHHOHFWURQLFERDUGVWRSVJDVIURPÀRZLQJWRWKHEXUQHULQFDVHRIRYHUKHDWLQJ
Press to re-establish normal operating conditions.
7KHDERYHUHVHWRSHUDWLRQLVRQO\SRVVLEOHLIWKHWHPSHUDWXUHLVOHVVWKDQ&
It is forbidden to disable this safety device
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boiler is blocked and only after the fault has been eliminated can the boiler be ignited again (see section “FAULTS THAT CANNOT
BE RESET BY THE USER”).
• Flame ionisation detector
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these conditions, the boiler blocks. Press to re-establish normal operating conditions.
• +\GUDXOLFSUHVVXUHVZLWFK
This device allows the main burner to be ignited only if system pressure is higher than 1 bars.
• 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 main burner to go out.
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boiler is switched on, the gas supply is open and the system is correctly pressurised.
• Pump anti-block function
If no heat demand is received in the heating and/or DHW modes for 24 consecutive hours, the pumps will automatically start and
operate for 10 seconds.
• +\GUDXOLFVDIHW\YDOYHKHDWLQJFLUFXLW
This device is set to 6 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.
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In case of a heat demand in the heating mode, the appliance can pre-circulate the pump before the burner is ignited. This pre-
circulation phase last from a few seconds to a few minutes, depending on the operating temperature and installation conditions.
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17.PUMP CAPACITY/ HEAD
The hydraulic pump is modulating and circulates the water between the boiler and the hydraulic separator.
KEY TO PUMP CHARTS - "SECTION" E
QRATE OF FLOW
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7690785.01 (1-05/18) 42
I N S TA L L E R S e c t i o n ( e n )
18.ANNUAL SERVICING
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UHJXODWLRQV,Q8.WKLVSHUVRQQHHGWREHDSSURYHGE\WKH+HDOWKDQG6DIHW\([HFXWLYH7RRSWLPLVHERLOHUHI¿FLHQF\FDUU\RXWWKH
following at the annual service:
• Check the appearance and airtightness of the gaskets of the gas and combustion circuits. Replace any worn seals with new
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• &KHFNWKHVWDWHRIWKHEXUQHUDQGPDNHVXUHLWLV¿UPO\¿[HG
• &KHFNIRUDQ\LPSXULWLHVLQVLGHWKHFRPEXVWLRQFKDPEHU8VHDYDFXXPFOHDQHUWRGRWKLV
• &KHFNWKHJDVYDOYHLVFRUUHFWO\FDOLEUDWHG
• &KHFNWKHSUHVVXUHRIWKHKHDWLQJV\VWHP
• &KHFNWKHSUHVVXUHRIWKHH[SDQVLRQYHVVHOV\VWHP
• &KHFNWKHIDQZRUNVFRUUHFWO\
• 0DNHVXUHWKHÀXHDQGDLUGXFWVDUHXQREVWUXFWHG
• &KHFNIRUDQ\EORFNDJHVLQVLGHWKHVLSKRQ
• Check correct operation of the fumes pressure switch, where present. Blow into the positive connector of the pressure switch
without using electromechanical devices, until you hear the activation click.
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UHVHWWKHRULJLQDORSHUDWLQJSDUDPHWHUVRIWKHERLOHULIWKH\ZHUHFKDQJHG
18.1CLEANING THE CONDESATE TRAP
Unscrew the lower section of the water condense trap “A”.
• &OHDQWKHERWWRPRIWKHWUDSE\ÀXVKLQJLWRXWZLWKZDWHU
• Fill the lower section with water until about 10 mm below the upper
edge.
• Fasten the lower section onto the condense trap again.
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18.2CLEANING THE HEAT EXCHANGER FUMES SIDE
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DJDLQVWVSODVKHVRIZDWHU
Proceed as follows to clean the heat exchanger:
• Disconnect the boiler from the mains power supply.
• Close the gas inlet valve.
• Remove the front cover from the boiler.
• Lower the electrical box, ensuring it is protected against contact
with water.
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HOHFWURGHDQGWKHKHDWH[FKDQJHUÀDQJHWKHUPRVWDW
• 5HPRYHWKHIDQPL[HUEXUQHUÀDQJHDVVHPEO\XQVFUHZLQJWKH
nuts M6 and the connector under the mixer.
• Protect the rear insulating panel (2) against water with a waterproof
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• Accurately suck up the residue inside the combustion chamber and
remove any scale, using a brush with plastic bristles available in
the cleaning kit.
• Sprinkle the surfaces to be cleaned (1) generously with the
appropriate liquid BX-HT Cleaner or similar using the appropriate
spray bottle and wait 10 minutes (other products may be used,
after consulting the authorised technical assistance service).
Brush without rinsing and apply BX-HT Cleaner again. Let 10 more
minutes pass, then brush again. If the result is not satisfactory,
repeat the operation.
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• 5HSODFHWKHJDVNHWRIWKHEXUQHUVXSSRUWÀDQJH
• To reassemble, proceed in the inverse order, tightening the 6 nuts
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43
I N S TA L L E R S e c t i o n ( e n )
7690785.01 (1-05/18)
18.3CHECKING THE BURNER
The burner needs no cleaning.
• Check the burner surface for damage, replace the burner if necessary.
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• 9HULI\WKDWWKHGLVWDQFHRIWKHLJQLWLRQHOHFWURGHLVZLWKLQWROHUDQFHDVVKRZQLQWKH¿JXUH
• &KHFNWKDWWKHLQVXODWLRQRIWKHEXUQHUÀDQJHLWLVQRWGDPDJHGRWKHUZLVHUHSODFHLW
POSITIONING THE ELECTRODES
aFlame detection probe
bIgnition electrode
cBurner
dBurner surface insulation
18.4COMBUSTION PARAMETERS
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LV¿WWHGZLWKWZRGHGLFDWHGWHVWSRLQWV2QHFRQQHFWLRQSRLQWLVFRQQHFWHGWRWKHÀXHJDV
discharge circuit ( A), and allows monitoring of the quality of the combustion products and
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allowing checking of any recycling of the combustion products in case of coaxial pipelines.
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• WHPSHUDWXUHRIWKHFRPEXVWLRQSURGXFWV
• oxygen O2 or carbon dioxide CO2 concentration
• carbon monoxide CO concentration.
The temperature of the comburent air must be measured on the test point located on the air
LQWDNHÀXHB) by inserting the measurement sensor by about 9 cm (C).
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b
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