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1. f prem 1 LT TD E EES EH E Yu E j E i E E 4 e E rJ r 4 V V VA y gt m eE pa ee at Ke Fig 6 3 The control sequences in c h function are illustrated in detail in section 6 7 EX Setting the boiler control function modes Itis possible to select the various boiler control function modes hereafter named parameters by using the keys of the control panel p c b Fig 6 4 1 To enter in the parameters setting mode press contemporary the 3 keys A B C Fig 6 4 for 10 second until the display shows Fig 6 5 13 Main electronic control ignition p c b VAN d a a p I y Fig 6 9 A Ek 7 To exit for setting without modifing the set press Fig 6 5 the keys B C Fig 6 10 2 To move through the parameters press c h set keys A or C Fig 6 6 Fig 6 10 To reset the boiler to the normal operation press con temporary the 3 keys A B C Fig 6 4 for 10 sec 3 The display shows Fig 6 7 ond Fig 6 6 1 1 The following table gives details of each parameter and AAA NANA NAIA NVI the possible value that can be set ml gt rm Important atthe end ofthe setting operation it is im yu 4 Lf portant to fill update the table in the installation manual see chapter COMMISSIONING section Set LAAN
2. JH Ton Bee is Ht Fig 9 2 EF Checks Lk Temperature resistance relationship NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Disconnect the cable from the Temperature probe Measure the temperature of the pipe C ch flow Tem perature probe Fig 9 3 or of the pipe D c h return Temperature probe Fig 9 4 where the Temperature probe is located and check the electrical resistance ac cording to the graph in Fig 9 1 EE Removal of the c h flow Temperature probe NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove all the case panels 2 Remove the electric connector E and remove the c h Temperature probe A Fig 9 3 3 Reassemble the c h flow Temperature probe carrying out the removal operations in reverse order Fig 9 3 EX Removal of the c h return Temperature probe NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Remove all the case panels 2 Remove the electric connector F and c h return Temperature probe B Fig 9 4 3 Reassemble the c h return Temperature probe carrying out the removal operations in reverse order 25 Temperature probe Fig 9 4
3. arene udin dir o0000 ES gt jan d 230 Supply network Fan Safety thermostat Fault finding 4 Components to check 12 2 12 2 13 1 9 2 10 11 4 8 4 6 5 Section of the manual note ref in brackets pafejap je soulay WOOY eqoud duet eula x3 euajxe ongf eunsseJg Jeu1ejxe anyen Ajayes eujejxe assea uoisuedx3 OLN eqoid duet an 10 911 S91 Sec esow uy jejes epoJjpeje uonoejeq opourpeje uou 10 911 S91 11e ue4 eqoud duet una y eqoud duet wou uo INEA SEL q o d joeje jeued ouo sbumes Joo q o d oiuodoeje UIEN qr o d oiuo4o9 3 sesny duund euJe1x3 goDueuoxe yeay Buisuepuo mom y O den pue edid urep puoy sedid any au iddns seo au A ddns 160g Defect x 1n0 x90 eoueiddy Er 01 Er 02 Er 03 Er 04 Er 05 Er 06 Er 08 Er 09 Er 10 An 11 Er 14 Er 15 Er 16 Er 17 Er 18 e Air 13 Sajeo pur ejdsiq indu yeay jeuruiou y yoes useop joq y 8 jenueuu uonej eisui osje ees N enau pue 7 au ueeweq AOEZ 10 204D Dui 1094100 Sy Auen pue INDIO ay j
4. 32 FUNCION e saya sitet totaque qa dedit 32 Check the cleanness of the trap 32 REMOVAL uere 32 Short spare parts list 33 Overall information EX Overall View 1 C h water return C h water flow o o 929 o Q ER o 2 38 22 23 3 o pa oF SS ag cg D GBS Oo E co o g Os ix 8 2 0 o wo C 2 8 cos 2 od i Ss 2 Cot OF cg oco oc og ES esa Us 2 o P Eh o5 52 Ox T fa w o EN c 5 23 O ES t 2 o 62 El H a o a Q O gt N ne c DOWN t y e 9 WAL S 7 e Ee ANN DG ED END E Lal AN 2 4 A Ze os B A gt a a LE MINERO Y SR WA S LIE ait d Y M NS OVA AN D o 1 EY 5 TIU XS RE ISLAS vw m Gei B Moi x ERA X SSS U US X RON NIU QA E a E Y 5 gt TIT o D N Ue WIA E Ped MUR 5 1 MM A d d KA c annn BO ENY A o E a s 5 T 4 d j Ge bebe A LA o F e go 7 WRI oa 7 z 3 d iL S 7 pen A o o i eg co L 3 o Ed D o o Oo SE 2 ome co c 59 c 8 5 G E oo be bai o o gt Sr OX 3 go ne 06 2 o Ao eo m ID o ES HS ao Gd oO SS 3 0 ER Hydraulic diagram 2 General access and emptying hydraulic circuits PX Nomen
5. 26 10 Fan and Air box HERR Function The function of the Fan A Fig 10 1 is to force the mix ture of air and gas into the burner The function of the Air box B is to mix the gas and the air in the right proportion The flow rate of the air gas mixture and consequently the input power ofthe boiler is proportionalto the speed of the fan that is controlled by the electronic control p c b J TN CTI i x ogl RRA 1 h gl B AA Hi AY m Uf A ot Fig 10 1 ER Removal of the Fan and the Air box NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Turn off the gas supply 2 Remove all the case panels see section 2 3 Disconnect the rubber pipe C Fig 10 2 Unscrew the gas connectors D and remove the gas pipe E 5 Disconnect the connector F Disconnect the fan connector G by pressing the plastic hook placed on the side of the connector Unscrew the screws H 8 Remove the fan A with the air box B 9 Remove the screws and the air box B Fig 10 3 Fig 10 3 10 Open the strip J by sliding the edges with the help of a screwdriver and remove the Air box Fig 10 4 Fig 10 4 11 Assemble the Fan and the Air box carrying out the removal operations in reve
6. Fig 12 2 4 Reassemble the safety thermostat carrying out the operations in reverse order 5 Apply an adequate quantity of heat conducting compound between the condensing heat ex changer and the thermostat Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 13 Flue temperature probe NTC and Safety thermal fuse ES Function The Flue temperature probe NTC A in Fig 13 1 and Fig 13 2 senses the temperature of the combustion products that flow through the condensing heat ex changer SSS a2 uf M e W i n Fig 13 1 If the temperature of the combustion products circuit reaches the limit temperature the Flue temperature probe NTC reduces the gas flow rate to the burner The temperature of the combustion products should de crease to a safe value temperature In the case that the temperature of the combustion products reaches a potentially dangerous value it stops the boiler operation lock out This allows the use of plastic materials for the flue outlet pipes and bends The use of kits different from the original isn t however allowed since the flue pipes are integral parts of the boiler Fig 13 2 ERR Rem
7. Wall hung fan flue room sealed high efficiency gas boiler Service manual ActivA Models G C Appl No Activ A 120V Activ A 150V Activ A 200V Activ A 250V Leave this manual adjacent to the gas meter Warning Service repairs must be carried out only by a qualified Gas Safety Registered Engineer who will be responsible for the cur rent Regulations for gas appliances recommended Table of contents N ech mb NOOROM A oio A Mi A o ES a A 009090000 AAA PA WWA NN NN a DESEN oR w Overall information 1 Overall View 1 Hydraulic diagram 1 General access and emptying hydraulic circuits 2 Nomenclature o oooocooccoooccooo 2 Case panels cece eee eee 2 Control panel 2 Main electronic p c b box 3 Emptying the primary circuit 4 Diagrams eene 5 Wiring diagram ssssseeseess 5 Circuit voltages sssusuususue 6 Fault finding 7 Display diagnostic 9 Condensing heat exchanger 10 Function opes ce bd Re EN re a 10 RE ue VC 10 Gleaning eet eee a eee ok 11 Main electronic control ignition p c b 12 FUNCION o ud ri operant 12 Selection and adjustment devices 12 Checking the temperature 13 Setting the boiler control function modes 13 Checks Removal of the electronic control p c b 15
8. Condensate trap EAN Function The condensate trap A in Fig 14 1 and Fig 14 3 allows the discharge of the condensate via the condensate drain pipe avoiding in the mean time the escape of combustion products A plastic ball closes the trap outlet in case that the trap is empty MAS i ISS a ES EEE Ia A L AM A M nl Fig 14 1 If the drain pipe becomes blocked or condensate can not drain the condensate level it the trap rises until it re aches the screw attached to the flame detection elec trode this will cause the boiler lock out EEN Check the cleanness of the trap 1 Unscrew the screws B and remove the plate C Fig 14 2 Fig 14 2 32 Unscrew the plug D on the bottom ofthe trap A and re move dirt eventually deposit Fig 14 3 TEN Removal NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove the front and right case panels 2 Unscrew the screws B and remove the plate C Fig 14 2 3 Unscrew the threaded locking ring E and remove the flexible pipe F Fig 14 3 4 Disconnect the electric connector G Fig 14 3 Fig 14 4 Fig 14 3 5 Remove the forks H and remove the condensate trap A moving it downwards Fig 14 3
9. Fig 14 4 6 Reassemble carrying out the removal operations in reverse order 15 Short spare parts list Key 1 G C part no E83 101 H58 661 E23 792 Description Burner mod Activ A 12OV Activ A 150V Activ A 200V Burner mod Activ A 25OV Condensing heat exchanger mod Activ A 12OV Activ A 15OV Activ A 200V Condensing heat exchanger mod Activ A 25OV Fan Gas valve Main Electronic control ignition p c b Control panel electronic p c b Temperature probe main circuit Overheat thermostat Flue temperature probe NTC Fuse 2 AF 250VAC 5x20 Detection electrode Ignition electrode Condensate trap Q ty 2a 2 2 mi 2 2 2 2 23 2 23 Manufac turer part no BI1313 100 Bl1313 101 Bl1462 101 Bl1462 102 Bl1313 102 BI1313 103 BI2035 1138 BI2035 101 Bl1442 106 Bl1172 105 Bl1432 102 Bl1165 112 Bl1313 104 Bl1313 105 Bl1462 104 Manufacturer s reference SIT 848 Sigma 0848135 ELTH type 261 33 32 32 ES 17962 2017 0 1710 36A4 UK Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Tel 01922 714600 www biasi co uk
10. Fig 2 5 Fig 2 5 4 To access to the parts located inside the control panel turn it as shown in Fig 2 6 ei Ke 7 S Ze t med NO S e Qu LJ Fig 2 6 EXI Main electronic p c b box NN Warning isolate the boiler from the mains electricity supply before removing any covering or component To gain access to the parts located into main electronic p c b box proceed as follows 1 Remove the front panel of the case Terminal block lid removal 2 To remove the terminal block lid E Fig 2 7 free the front hooks General access and emptying hydraulic circuits Fig 2 7 3 Slightly rotate the lid as indicated by the curved arrow and free the rear hooks 4 Remove the lid Main electronic p c b lid removal To get access to the main electronic p c b 5 Pull the box that contains the electronic p c b and rotate it Fig 2 8 SFA Fig 2 8 6 Remove the terminal block lid E Fig 2 7 7 Free the hooks placed on the three sides indi cated and rotate the lid towards left Fig 2 9 3 General access and emptying hydraulic circuits Fig 2 9 EX Emptying the primary circuit 1 Close the c h circuit flow and return cocks 2 Remove the front and right panels of the boiler 3 Open the drain tap F Fig 2 10 until the boiler is completely emptied Fig 2 10 4 To help the drain
11. Thermal control in the c h mode 17 Control panel electronic p c b 18 Eupen Ecl Ede DEUDA 18 Normaly information 18 Info modality 19 Function modes setting modality 19 Removal of the control panel electr p c b 19 10 1 10 2 11 11 1 11 2 11 8 11 4 12 12 1 12 2 12 8 13 13 1 13 2 13 8 14 14 1 14 2 14 8 15 Gas valve volu ox EI t cR Rats 21 FutietlOnizs cud bens vacet et dp teta 21 Description of the parts 21 Adjustment 21 CHECKS onu che Hath Manes stre memi iss cats 23 Removal of the gas valve 23 Temperature probe 25 FUNCION vida ara weet une an 25 CHECKS 2152 reme os IDEE 25 Removal of the c h flow temp probe 25 Removal of the c h return temp probe 25 Fan and Air box seeeee 27 FutrietlOn zcez eres e NIU ed wants 27 Removal of the Fan and the Air box 27 Ignition and detection electrodes and burner ee eee eee 28 FUNCION geao eise es Cortona 28 Removal of the Ignition and detection electrodes cis id 28 Removal of the burner 28 berechent AES Mem td s 28 Safety thermostat 30 A uS SEL MS Me 30 Checks eidbek a baat rani teste 30 Removal cuasi cia 30 Flue temperature probe NTC and Safety thermal fuse 31 Functlori uui ose Sam oak eS 31 Removal 31 CHECKS ahs bue en dii eth 31 Condensate trap
12. a oi SI e g 5 alle 3 P a 3 lo e 8 3 es 8 8 g 2 2 S 8 2 3 8 3 2 0 ei al SI i sl 2 g a 3 9 9 ae 3 lt a 2 9 amp le 8 i Ss 8 3 2 2 s el2d 83g El T 8 2 oa e s al g 8 g so es P e T v S Ed 2 T 2 S 2 2 e 4 gt z g a o g n e Se E E A a S 3 z aj p 8 a 5 5 S 3 o o H D z t E a m o o E 2 1oejeq 2 v Q D Syexpeuq ul Jas eyou E SS ELI CCL ook vi OL c6 v8 H S9 em S SS Vol BR SS enueu ay jo uonoes y98Uy9 0 sjueuoduio5 EXI Display diagnostic The display indications provide help in the diagnosis of fault finding The control panel display gives other information forthe user The following table gives fault code error and the reson for the fault Er 01 RESET Lack of burner ignition Er 02 RESET Safety thermostat lockout Er 03 RESET Other faults Er 04 4 Er 05 c Er 06 4 Er 08 4 Er 09 4 Er 10 RESET Er 14 RESET Er 15 RESET Er 16 RESET Er 17 RESET Er 18 RESET Faulty primary circuit no water or absence of flow Faulty fan control system Faulty c h temperature probe NTC Faulty external temperature probe NTC if fitted Faulty flue temperature probe NTC Lockout flue temperature probe NTC Flue temperature gt 120 C Faulty pump absence of water flow in the main circuit or primary temperature above 105 C None or too low water flow Faulty pump temp differ
13. 00 Depends on room thermostat factory set 04 Always running 00 99 0 100296 factory set Natural gas G20 30 Activ A 120V 30 Activ A 15OV 30 Activ A 200V 40 Activ A 250V Propane G31 40 Activ A 120V 40 Activ A 150V 40 Activ A 200V 40 Activ A 250V 01 0 1 60 6 0 K value factory set 00 Off 00 Burner off at fixed d h w 65 C factory set 01 Brurner off at set point 5 C 00 Probe not pres ent factory set 01 Probe present Main electronic control ignition p c b owed pr mees E IN Norused prz Norused a Norused prz Norused prar Norused prz Noued prz Ch minimum set Pr27 25 45 factory set point 25 C Tab 6 1 XN Checks Check that the fuses are complete If the Main electronic control ignition p c b does not supply any device pump fan etc check that the fuses 10 Fig 6 2 are complete If afuse has blown replace it with one that has the same characteristics after having identified the reason for fail ure Lock sequence Start the boiler until the burner is ignited With the burner firing interrupt the gas supply The Main electronic control ignition p c b must carry out four complete ignition cycles and then after about 4 minutes goes to lock out state Switch off and on the electricity supply to the boiler by means of
14. 2 Important after the gas pressure checks and any adjustment operations all of the test points must be sealed EX Checks NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Activ A 150V Activ A 200V Activ A 250V Tab 8 2 Fig 8 10 Check the on off operators coils Remove the front panel of the case Disconnect the electrical connector 4 Fig 8 2 Measure the electrical resistance between the connector pins of the on off operators as illus trated in Fig 8 11 Qo mx ON OFF Operator approx 6 400 Q ON OFF Operator approx 920 Q at ambient temperature Fig 8 11 EE Removal of the gas valve NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove the front panel of the case as explained in the section 2 3 of this manual 2 Disconnect the connector D Fig 8 12 3 Unscrew the screws E and disconnect the earth connector F Fig 8 12 4 Turn off the gas supply and disconnect the gas isolation cock connector from the inlet port of the gas valve 5 Using pliers remove the spring G and the rubber pipe H Fig 8 12 6 Unscrew the connectors Fig 8 12 and remove the pipe J 7 Unscrew the screws K and remove the valve Fig 8 12 8 Reassemble the valve carrying out the removal operations in reverse order Before fitting a new valve
15. a dan gerous temperature the safety thermostat opens the electric circuit that supplies the on off operators of the gas valve Consequently the full sequence ignition device at tempts to light the burner and at the end locks the boiler and lights the lock out on the display ule M gt TEETEESER Fig 12 1 IEEJ Checks Overheat temperature value 1 Run the boiler and set the temperature at maxi mum by pressing the appropriate key 2 Allow the boiler to reach its maximum operating temperature The boiler should maintain a tem perature below that of the safety thermostat and no overheat intervention should occur 30 Nx Warning isolate the boiler from the mains electricity supply before removing any covering or component Electrical function Remove all the case panels 2 Disconnect the safety thermostat and check its electrical function Normally no intervention the contact must be closed electrical resistance zero Q PEN Removal NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove all the case panels 2 Disconnect the wiring B detail in Fig 12 2 3 Unscrew the screws C and remove the safety thermostat ech
16. access to the parts located inside the Con trol panel electronic p c b as explained in the section 2 3 of this manual 3 Remove all the wiring A connected to the Control panel electronic p c b Fig 7 3 19 Control panel electronic p c b Fig 7 3 20 Unscrew the screws B Delicately flex the hooks C in the directions indi cated Fig 7 3 in order to release the circuit from the box Remove the Control panel electronic p c b Reassemble the Control panel electronic p c b carrying out the removal operations in the reverse order 8 Gas valve EXI Function The Gas valveA in Fig 8 1 controls the gas inflow to the boiler burner Kd RM be ES m Eza Le E ES X Y A Y JM Fig 8 1 By means of an electric command given to the on off operators the passage ofthe gas through the Gas valve can be opened or closed EX Description of the parts Fig 8 2 Fig 8 2 Maximum gas pressure adjustment Minimum gas pressure adjustment On off operators On off operators electric connector Gas valve inlet pressure test point EEN Adjustment NN Warning isolate the boiler from the mains electricity supply before removing any covering or component aR WD Check the supply pre
17. AAAS 252492 ting record v PARAMETER DIGIT VALUES Boiler type to be up 00 No power Er 99 EI mr wl plete range 19 Activ A 150V ng Je 4 a 20 Activ A 200V 21 Activ A 250V EE GE EE LECH E Fer Norused Pros A 4 To modify the parameter press contemporary the Notused Pros keys A B Fig 6 8 Gas type 00 G20 Natural 05 G31 Propane mes pros gt C h flow max Pr07 85 45 factory set temperature C 85 C Factory parameters Pr 08 00 No reset 04 All parameters return to factory set with the exclusion of Fig 6 8 Pr 01 and Pr 05 39 All parameters 5 To change the parameters press c h set keys A return to factory set or C Fig 6 6 included Pr 01 6 To memorize the setting press the key B Fig 6 9 and Pr 05 14 PARAMETER DIGIT VALUES Chimney function sweep Ch reignition fre quency C h pump post cir culation Max useful output in c h mode C h pump working type Ignition power K value external probe diagram D h w burner turn off Pr 17 function NTC on the c h re turn No chimney Soe fun factory set 01 Low power Sweep test C h power 04 sweep test 07 D h w power sweep test 00 99 0 600 sec factory set 30 3 minutes 00 99 0600 sec factory set 10 1 minute 00 99 0 100 factory set 99 Activ A 120V 99 Activ A 150V 99 Activ A 200V 99 Activ A 25OV
18. Cleaning If there are deposits of dirt between the fins of the Con densing heat exchanger clean with a bristle paintbrush and remove the dust with a hoover Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 Fig 5 4 20 Unscrew the screws T and remove the plate U Fig 5 5 21 Remove the forks V and remove the condensate trap W moving it downwards Fig 5 4 t Fig 5 5 11 6 Main electronic control ignition p c b EX Function Fig 6 1 12 Inlet Information On the Main electronic control ignition p C D Function control C h temperature adjustment Boiler reset button printed circuit board p c b From other boiler devices C h flow temperature probe NTC C h return temperature probe NTC Flue temperature probe NTC Safety thermostat Flame detection electrode Room thermostat if fitted Time switch if fitted Outlet command External Pump Gas valve Fan Ignition electrodes Display indicates Er control panel electronic p c b The fundamental function of the Main electronic con trol ignition p c b is that of controlling the boiler in rela tion to the external needs i e heating the dwelling and operating in order to keep the temperature of the hy draulic circuits constant This is obviously possible within the useful power and maximum worki
19. be NTC 8 Connector remote control optional 9 Connector display and function control c h temperature adjustment control panel p c b 10 Fuse F1 F2 2AF 11 Connector electric supply Main electronic con trollignition p c b 12 Connector electric supply control panel p c b 13 Connector gas valve external pump and fan EEN Checking the temperature The Main electronic control ignition p c b makes it possible adjust the c h water flow temperature The temperature of the water is converted into an elec tric signal by means of temperature probes The user setting the desired temperature with the con trol panel p c b key A MWS If the power requested is lower than 4096 of the maxi mum power output then control is achieved by switch ing ON the burner at minimum power then switching OFF ON OFF function If the power requested is higher then the burner is switched ON at maximum power and will control by modulating to 40 of the maximum power output During the c h operation Fig 6 3 the signal coming from the c h temperature probe is compared to the sig nal given by the control panel p c b through the adjust ment made by the user key A MISZ The result of such a comparison operates the fan speed thus regu lating the gas flow rate and consequently changing the useful output of the boiler
20. clature Fig 2 1 Right side panel Main electronic p c b box Front panel Control panel ao A UO N Left side panel N Case panels NN Warning isolate the boiler from the mains electricity supply before removing any covering or component For the most part of the check and maintenance oper ations it is necessary to remove one or more panels of the case The side panels can be removed only after the removal of the front panel To remove the front panel loosen screws A Fig 2 2 Fig 2 2 bottom view of the boiler Pull the lower part of the front panel and lift it upwards Fig 2 3 2 Fig 2 3 To remove the side panels loosen the screws B Fig 2 2 andC Fig 2 3 Pull the side panels towards the outside To Fit the case panels Fit the side case panels Warning Fit the front panel hooking it on the upper side Push the front case panel until it is completely hold in place Fig 2 4 Ensure that the front panel edge is close fitting to the side panels Lock in place the panel with the appropriate screws Fig 2 4 PEN Contro panel NN Warning isolate the boiler from the mains electricity supply before removing any covering or component To gain access to the parts located inside the control panel proceed as follows 1 Remove the front panel of the case 2 Unscrew the screw D Fig 2 5 3 Free the hooks indicated and rotate the lid to wards left
21. ence between probes higher than 35 C Possible exchange of NTC probes Flow or Return or pump wrongly mounted upside down Faulty c h temperature probe NTC Flow or Return Faulty primary circuit no water or absence of flow Useful output limitation tempera ture difference between probes higher than 25 C Boiler test performing Td Thermostat Delayed Boiler test performing An 11 Parasite flame 5 Condensing heat exchanger EXI Function The Condensing heat exchanger A in Fig 5 1 has the function of transferring heat produced from combus tion of the gas and from the flue exhausted gas to the water circulating in it gt 2 nim AY X bed TIT TIT ae Y WM DUT FA du Rui Wi ES gt ae PS A q C c y al i Je B Fig 5 1 By reducing the combustion products temperature the latent heat of the vapour is transferred to the water cir cuit allowing an extra gain of useful heat The condensed vapour is then drained through the condensate trap B and the draining pipe C EFI Removal NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Turn off the gas supply Remove all the case panels see section 2 Disconnect the flue system from the boiler Disconnect
22. ig 6 12 17 7 Control panel electronic p c b Function bas LH e O pes A C h temperature increase key B C h temperature reduce key C Reset Stand by Winter Summer key D Display The Control panel electronic p c b can give to the ser vice 3 levels of informations O Normally information O Info modality O Function modes setting modality Normaly information KEY The symbol indicates that the boiler can be directly reactivated by the user by pressing the reset button The symbol indicates that the fault re quires intervention on behalf of specia lised technical assistance Y All symbols represented with lines that N surround them indicate that the sym MI bolis flashing SIGNAL DISPLAYED BY THE LCD FUNCTION Lack of burner ignition on safety Er 01 RESET iockotit Safety thermostat intervention Er 02 RESET iock ut Er 03 RESET General lockout Er 10 RESET Flue probe interven lockout Faulty pump or primary tempera Er PEE RESET ture above 105 C None or too low water flow Faulty Er 15 RESET pump temp difference between probes higher than 35 C Possible exchange of NTC probes Er 16 RESET Flow or Return or pump wrongly Ge upside down 18 Lco FUNCTION GE c h RS probe NTC Er 18 RESET primary Zen no water or gien absence of flow Er 04 4 Faulty primary circuit no water or absence of flow DO B
23. ing of the primary circuit loose the condensing heat exchanger air purger valve G Fig 2 11 Fig 2 11 Attention some water could remain in the condens ing heat exchanger 5 Close drain tap once the emptying has been completed 3 Diagrams EXI Wiring diagram Gas valve Fan Condensate trap Ignition Flame detection electrodes electrode e wh Q lt 2e lr t C h return temp probe NTC t Flue temp probe NTC C h flow temp probe NTC Safety N thermostat Time switch option miti Remote External temp probe terminal block Electric supply terminal block Room thermostat Pump terminal block bn brown gn green bu blue ye yellow bk black vt violet wh white Og orange rd red gnye green yellow 9y grey rdwh red white Diagrams EEJ Circuit voltages Electrical voltages with burner on during c h operation C h external pump Gas valve 230
24. it is advisable to pre set it as follows 9 Remove the brass plug and turn the plastic screw inside it fully clockwise until it stops Do not over tight 10 Turn it counter clockwise 2 and 3 4 turns 23 Gas valve 11 Adjustthe gas valve using the flue analyser as de scribed in section 8 3 After any service operation on the components of the gas circuit check all the connections for gas leaks Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 24 9 Temperature probe EXI Function The Temperature probe has the function of converting the temperature of the water in the hydraulic circuit where itis installed into an electrical signal resistance The relation between temperature and electrical resis tance is stated in Fig 9 1 Q EA A 12000 11500 11000 10500 10000 9500 9000 8500 8000 i 7500 7000 6500 1000 500 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 C Fig 9 1 On the boiler there are two Temperature probes One on the output of the primary condensing heat ex changer c h flow Temperature probe Ain Fig 9 2 and Fig 9 3 one on the inputof the primary condensing heat exchanger c h return Temperature probe B in Fig 9 2 and Fig 9 4 c h c h flow return JW On r 3 wei
25. mm 2 Fig 8 2 by rotating it clockwise the CO2 increases Checking the maximum gas valve setting 20 Presskey Ato vary the output in chimney sweep mode when the display shows the letters cP that alternate with the heating water temperature value e g 60 the chimney sweep function is at maximum output in heating mode Fig 8 8 VAN E EI b Li p di N GE D I 202 2492 Fig 8 8 21 Pressfurther key A The display shows the letters dP that alternate with the heating water tempera ture value e g 60 Fig 8 9 On this models this step is not relevant and the value shown is the same of the step 20 No setting is needed on this step Gas valve Avra JL RU Y EN y LILI elek ky Fig 8 9 22 Allow the analyser to give a stable reading 23 Read the CO value It should be between Type gas CO value range Activ A 120V Natural G20 8 9 9 8 Propane G31 9 9 10 8 To adjust the CO value rotate screw 1 Fig 8 2 by rotating it clockwise the COs 96 decreases 24 Press keys A B C Fig 8 5 at the same time again to exit the chimney sweep mode and re turn to the previously set boiler status Fig 8 10 function cal la 3 25 Switch off the boiler and turn off the room ther mostat 26 Close the air flue sampling points 27 After adjustment fit the protective brass plug 2 Fig 8
26. ng temperature limits foreseen Generally the Main electronic control ignition p c b re ceives inlet information coming from the boiler the sensors or from the outside printed circuit board p c b room thermostat etc processes it and conse quently acts with outlet commands on other compo nents of the boiler Fig 6 1 The Main electronic control ignition p c b is also a full sequence ignition device and does a sequence of oper ations ignition cycle which lead to the ignition of the gas at the burner It checks the presence of the flame during the entire period in which itis activated and supplies the fan regu lating its speed The Main electronic control ignition p c b has a safety function and any incorrect interventions or tampering can result in conditions of dangerous functioning of the boiler The Main electronic control ignition p c b can lock the functioning of the boiler lock state and stop its func tioning up to the resetting intervention The lock out is signalled on the display of the control panel electronic p c b and can be reset only by using the boiler reset button placed on the printed circuit board p c b see section 7 1 Some components which are connected to the device can activate the lock state The causes of a lock state could be The intervention of the safety thermostat over heat of the primary circuit The intervention of the flue temperature probe overheat of the combusti
27. ntrol ignition p c b properly set the parameters Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 Main electronic control ignition p c b EY Thermal control in the eh mode Switch in the c h function mode NO Request for heat from circulator off s 8 fan still room thermostat circulator on Temp difference between probes higher than 35 C 2 Is primary circuit temperature higher than that selected YES NO NO YES NO lock memorised YES YES gt stop circulator 3min starts fan checks fan rpm Is fan rpm exact NO YES L temperature higher than 110 C beginning of wait period cancels lock NO YES I flame presence End of wait period NO starts ignition discharges Opens gas valve beginning of ignition period flame presence closes gas valve stops fan interrupts ignition discharges memorizes lock display show lock out End of ignition NO period NO reset key interrupts ignition discharges gas valve open fan runs temperature probe lock out Is ech d NO pressed YES E Safety thermostat or flue YES flame presence NO F
28. o sseupunos 10J YOO san ea 1edoJd JO jenueuJ uomne ejsur TEE bM MR AG E oe Ly uonooes oos eut 01 JAJOY essea uoisuedxe y JO uonezunsseJd eui 429 elloq eui Aq xoeq pexons jou si seb jsneuxe ey auns SE A AO TEE dl pue seoueJeojo ees pej ersul OSJJOO s EUILU9 eni ay Aejdsip eoueijdde ay Aq uaAiB uoneoipur jeondo l Bumes nea seb oul 104 anje eoua19j81 e S Bulpees siu jeu Aya suononajsqo jo eouesqe pue sseupunos 10 Y29049 au LOA osje peurejqo aq ues uoneuuoJur njesf seseD any eui jo anjea 02 eurxoeuo ezAjeue enjeurDulst 9 sseujybn ses Jo de uonejos pue edid Ajddns seb eui y2 y Zz YEISOWWAU Ajejes y JO UOHUSA9 U eui pue WOU uonoeuuoo ejneu pue au jo Ajuejod eui Y28049 SION urew y jo Duneeu Je o ay esneo pjnoo ssed q pauwely e Soen eusajxe pue Bnid ajqeo Ajddns jo AjuDeiur eui Ae Ae dsip ay uo 43 se pejeoipur si no 4907 x o siJajloq In H ay ueuM eA eA jejes ay LUJO Syed JSJEmM y o uo uonejedo 8H HH MH mH Buunp eA eA Ajeyes ay Wo Spa Ja z E E EJ E L mnm Jayjoq Asion D 3 a CH Sin E H uoneinpoui joaJJoou E 3 o 2 lins ue4 2 340 ejdsip jeued o1uos eu Y Hu peys Jou seop Jejog eu 2 19 a Oo S E s dme Sog S SIS E ELS S mI S e O a gt o o o I S o o o o a o 3 o Es D 3 3 o o 5 ala 2 3 oe 2 2 18 2 3 CS EC E EES ECH al eS s el 2 3 lt 21 3 8 OG 3 el z z 8 a ml 2
29. oiler Stand By anti freeze protection activaded Boiler waiting for heat request Boiler in winter mode The primary circuit temperature is displayed Boiler on demand for c h power A AW C Burner ignition spark ow Flame present Burner on Boiler in anti freeze phase bP L ao flasching temperature flashing UI Ka E mi Boiler in antifrost phase AF ni L m flasching temperature flashing IZ Set c h all other symbols are disabled Pump activated for the post cir culation phase Po flashing temperature flashing FUNCTION Delayed burner ignition for setting the system uu flashing tem perature flashing Boiler in chimney sweep function ing mode The chimney sweep is activated by setting parameter 09 01 and is visualised by the switching on of the hand and alternate flashing between the tempereture and the communication and radi ator symbol Thermostat Delayed Boiler test performing Useful output limitation temp dif ference between probes higher than 25 C Boiler test performing Flame detection error An flasch ing error flashing number Info modality The INFO mode allows the display of some information on the boiler functioning status In case of malfunction ing of the boiler it may be useful to communicate such information to the Authorised Service Centre Engineer so that the causes can be understood In order to access the INFO mode press key
30. on products A fault on gas supply Faulty ignition faulty ignition electrodes their wir ing or connection Faulty flame detection faulty detection electrode its wiring or connection Faulty condensate drainage Faulty gas valve faulty on off operators or not electrically supplied O Faulty Main electronic control ignition p c b Other components like the c h temperature probes NTC switch can temporarily stop the ignition of the burner but allow its ignition when the cause of the inter vention has stopped NO TAG and Fig 6 12 show the sequence of the oper ations that are carried out at the start of every ignition cycle and during normal functioning CHN Selection and adjustment devices On the Main electronic control ignition p c b several selection adjustment and protection devices are lo cated Fig 6 2 Qs MOT OU CEOs 05 Main electronic control ignition p c b Some of these devices are directly accessible by the user function control temperature adjustment etc others like the fuses are accessible by removing the main electronic p c b lid Fig 6 2 1 Connector ignition electrode 2 Connector flame detection electrode 3 Connector controler fan 4 Connector c h return temperature probe NTC 5 Connector flue temperature probe NTC 6 Connector external temperature probe op tional 7 Connector safety thermostat and c h flow tem perature pro
31. oval NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Remove all the case panels Disconnect the connector B from the Flue tem perature probe NTC by pressing the plastic hook placed on the side of the connector 3 Unscrew and remove the flue temperature probe A Fig 13 2 from the condensing heat ex changer 4 Assemble the Flue temperature probe NTC carry ing out the removal operations in reverse se quence EEN Checks Overheat temperature value ech Run the boiler and set the temperature at maxi mum by pressing the appropriate key 2 Allow the boiler to reach its maximum operating temperature The boiler should maintain a tem perature below that of the Flue temperature probe NTC and no overheat intervention should occur Temperature resistance relationship Remove the Flue temperature probe NTC see section 13 2 2 Measurethe Flue temperature probe NTC electri cal resistance at the ambient temperature and check it according to the graph in Fig 13 3 Q 12500 _ _ _ _ J z gt J gt J gt 12000 11500 11000 10500 10000 9500 9000 8500 8000 D 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 gt 2000 gt 1500 1000 LZ 500 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 C Fig 13 3 31 14
32. rom the mains electricity supply before removing any covering or component 1 Remove the air box and the fan see section 10 2 2 Unscrew the screws Fig 11 1 and remove the fan burner duct A 3 Remove the burner by sliding it forward locating tab burner gasket Fig 11 3 4 Assemble the burner carrying out the removal operation in reverse order Ensure the burner is correctly located by lining up the locating tab Fig 11 3 Before reassembling ensure the burner gasket is correctly located Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 EN Checks Check the position of the electrode edges NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove the ignition electrodes see section 11 2 2 Check for the correct distance between the me tallic edges of the ignition electrode see Fig 11 4 earth electrode Ignition electrode Fig 11 4 Ignition and detection electrodes Check the connection wires 29 12 Safety thermostat IAN Function The safety thermostat A in Fig 12 1 is a device that senses the temperature of the primary circuit water which flows in the outlet pipe ofthe condensing heat ex changer If the temperature control system of the boiler fails and the temperature of the primary circuit reaches
33. rse sequence Before reassembling ensure the fan gasket Fig 10 2 is correctly mounted After any service operation on the components of the gas circuit check all the connections for gas leaks Warning After cleaning or replacement as detailed above it is deemed necessary to undertake a combustion analysis as detailed in chapter 8 3 section 11 27 11 Ignition and detection electrodes and burner URBI Function Three electrodes are fitted on the fan burner group Two of them fitted on the right side of the fan burner group A are the ignition electrodes B On the left side is the detection electrode C and it de tects the presence of the flame Fig 11 1 The burner D is fitted on the rear of the fan burner group A Fig 11 2 AER Removal of the Ignition and detection electrodes NN Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove all the case panels see section 2 28 2 Disconnect the ignition electrodes connector E and the earth wire F Fig 11 1 and disconnect the detection electrode connector G 3 Unscrew the screws H and remove the ignition electrodes B and the detection electrode C Fig 11 1 4 Assemble the Ignition and detection electrodes carrying out the removal operation in reverse or der IK Removal of the burner NN Warning isolate the boiler f
34. s A and C Fig 7 1 at the same time until the letter di appears on the display that alternates with a code Fig 7 2 VAN NI a SS i a V l J 299 42 Fig 7 2 To scroll the values press B reduce and A increase keys Fig 7 1 In order to exit the INFO mode hold keys A and C Fig 7 1 pressed at the same time The following table gives details of each parameter and the possible value that can be show Control panel electronic p c b External temperature C if fitted K value external probe dia gram n value is x 10 Offset Transaltion of K diagram 15 C Ch temperature C calcu lated by external sensor C h flow temperature C d 78 C h return temperature C de 44 Flue temperature C d Je Fan speedy the value has to be x 100 4400 rpm SW version BC burner control de 0 SW version MB main board dd 03 Tab 7 1 Function modes setting modality Itis possible to select the various boiler control function modes hereafter named parameters by using the keys of the control panel p c b During the function modes setting the boiler does not operate To get in function modes setting modality see section 6 4 Removal of the control panel electronic p c b NN Warning isolate the boiler from the mains electricity supply before removing any covering or component Remove all the body panels see section 2 2 2 Gain
35. ssure before making any ad justment to the gas valve 1 Close the gas inlet valve 2 Remove the front panel of the case and lower the control panel see sections 2 2 and 2 3 3 Loosen the internal screw on the Inlet Pressure Test Point 5 Fig 8 2 of the Gas valve and con nect a pressure gauge using a suitable hose Open the gas inlet valve 5 Turn on the electricity supply to the boiler switch ing on the fused spur isolation switch 6 Set the boiler in c h function as illustrated in Fig 8 3 PF D XU function E 7 Make sure thatthe room thermostat is in the heat request position 8 Read the inlet pressure value and ensure that it is within the limits given in the table Gas supply pressures of the user installation manual If it does not comply with the required pressure check the gas supply line and governor for faults and or correct adjustment 9 Switch off the boiler close the gas inlet valve 10 Disconnect the pressure gauge and close the Inlet Pressure Test Point 5 Fig 8 2 Gas valve adjustment Fig 8 3 The person carrying out a combustion measurement should have been assessed as competent in the use of a flue gas analyser and the interpretation of the results The flue gas analyser used should be one meeting the requirements of BS7927 or BS EN50379 3 and be calibrated in accordance with the analyser manufacturers requirements and have a current calibration certificate 11 Fi
36. t the probe of the flue analyser in the flue ex haust sampling point located on the exhaust pipes of the boiler Fig 8 4 21 Gas valve air intake sampling point flue exhaust sampling point Fig 8 4 12 13 14 Turn on the boiler switching on the fused spur isolation switch Open the gas inlet valve Turn on the boiler and operate for 2 minuets to pre heat the flue before commencing any ad justments Fig 8 5 15 To enter in the parameters setting mode press contemporary the 3 keys A B C Fig 8 5 for 10 second until the display shows Fig 8 6 amp Pi z N II LANN AANS l NN Fig 8 6 Adjusting minimum gas valve setting 16 22 Press keys A and C Fig 8 5 at the same time until the display shows the letters LP that alter nate with the heating water temperature value 6 9 45 indicating the activation of the chimney sweep function at minimum output Fig 8 7 ATZA TY o rm Li LL VENT NN y S 299 1499 Fig 8 7 17 Makesurethatthe room thermostat is in the heat request position 18 Allow the analyser to give a stable reading 19 Read the CO value Activ A 120V Activ A 15OV Activ A 200V Activ A 250V It should be between CO2 range value Type gas Tab 8 1 To adjust the CO value remove the brass plug by un screwing it and rotate the Allen key screw 4
37. the air manifold D Fig 5 4 by pulling it Disconnect the rubber pipe E Fig 5 2 Unscrew the gas connectors F Remove gas pipe G Unscrew the screws and remove the detection electrode connector H 9 Unscrew the screws and remove the ignition elec trodes connector I 10 Unscrew the screw and remove the overheat thermostat J 11 Disconnect the connector K by pressing the plas tic hook placed on the side of the connector 12 Disconnect the connector L WD D YN O O ATA Hp Fig 5 2 13 Disconnect the fan connector M by pressing the plastic hook placed on the side of the connector Fig 5 4 Fig 5 3 14 Empty the primary circuit of the boiler 15 Remove the forks N Fig 5 2 16 Loosen the connection O and remove the pipe P Fig 5 3 from the Condensing heat exchanger 10 Condensing heat exchanger 17 Loosen the connection Q and remove the pipe R 22 Loosen the screws X Fig 5 4 Fig 5 2 Fig 5 4 from the Condensing heat exchanger 23 Unscrew the screws Y Fig 5 2 18 Unscrew the screws 24 Removethe Condensing heat exchanger slightly 19 Remove the fan burner group move it upwards turn it frontwards freeing it from the below screws X Fig 5 4 Fig 5 2 and then extract it forwards 25 Reassemble the Condensing heat exchanger carrying out the removal operations in reverse order Ensure to tighten the screws S Fig 5 2 firmly EXHN
38. the fused spur isolation switch the device must not unlock and the burner must not turn on CU Removal of the electronic control p c b NN Warning isolate the boiler from the mains electricity supply before removing any covering or component When replacing the Main electronic control ignition p c b all parameters must be correctly checked adjusted accordingly with the values noted in table in the installation manual see chapter COMMIS SIONING section Setting record for information on parameters see also section 6 4 1 Remove all the body panels see section 2 2 2 Gain access to the parts located inside the Main electronic p c b box as explained in the section 2 4 of this manual 3 Remove allthe wiring connected to the Main elec tronic control ignition p c b 15 Main electronic control ignition p c b 4 Delicately flex the hooks D in the directions indi cated Fig 6 11 in order to release the circuit from the box 5 Remove the Main electronic control ignition p c b 16 6 Re assemble the Main electronic control igni tion p c b following the removal procedures in the reverse order Important When re assembling the Main electronic control igni tion p c b 7 It is not necessary to utilise static protections but it is advisable to ensure that the pcb is handled with care and held atthe edges and with clean dry hands Attention After installing the Main electronic co

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