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
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duct adaptor Ø 110 mm (B) and an air duct adaptor Ø 110 mm
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removed from the cap.
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outlet ducts, adapting them to various requirements. It can also
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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
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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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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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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
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TERMINAL BLOCK M2
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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.
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