Biasi Activ A 25S Page 74 User Manual And Installation Instructions Download

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MAINTENANCE

• Loosen the central heating drain cock 7 indi-

cated in Fig. 9.10.

Fig. 9.10

OPEN

CLOSED

Main circuit

drain valve

• To make draining easier, lift the plug 29 of

the automatic relief valve in Fig. 9.11.

• A small quantity of water will remain in the

d.h.w. heat exchanger after draining. If the
boiler is being drained to prevent freezing,
the d.h.w. heat exchanger must be removed
and inverted to drain fully or an antifreeze
solution added.

Fig. 9.11

9.6 Cleaning the condensing prima-

ry exchanger and the burner

Removing the fan burner unit 40 in Fig. 9.12.

Fig. 9.12

• Remove the body's front panel and turn the

controls panel (see "Dismantling the exter-
nal panels" to page 72).

• Unscrew the connector L, remove the fixing

fork K and remove the pipe J.

• Unhook the silencer pipe.
• Insert a flat screwdriver in the connector re-

cess P and lever towards the bottom, dis-
connect the connector at the same time M
by pulling towards the front M (Fig. 9.12).

• Disconnect the fan connector N by pressing

the plastic hook O positioned at the bottom
part of the connector (Fig. 9.12).

• Unscrew screws Q and remove the fan

burner unit 40 (Fig. 9.12)

• Unscrew the Q screw nuts and remove the

burner group fan 40 (Fig. 9.12)

• Extract the burner casing by pulling it out-

wards.

• The silicon gasket on the front panel of the

combustion chamber Fig. 9.13 has to be
changed when deteriorated and in any case

Summary of Contents for Activ A 25S

Page 1: ...Wall hung fanflue roomsealed high efficiency gas boiler User manual and Installation instructions Activ A Plus Models G C Appl No Activ A Plus 16S Activ A Plus 25S ...

Page 2: ...seful heat that otherwise would be lost DANGER The indications marked with this symbol must be observed to pre vent accidents of mechanical or generic origin e g injuries or bruises DANGER The indications marked with this symbol must be observed to pre vent accidents of electric origin electrocution DANGER The indications marked with this symbol must be observed to pre vent the risk of fire or exp...

Page 3: ...ou are advised to have a Gas Safety Registered Engineer check that the installation of the gas supply is gas tight is of the correct gauge for the flow to the boiler is fitted with all the safety and control devices required by the current Regulations Ensure that check with the Installer that he has connected and terminated the pressure relief valve in a manner which allows safe discharge The manu...

Page 4: ...ren or by those unfamiliar with its operation must not be exposed to weather conditions During the operation it is quite normal that the boiler produces a white plume of conden sation vapour from the flue terminal This is due to the high efficiency of the appliance and may be particularly evident with low outdoor temperatures Safe handling of substances Biasi products are manufactured in accordanc...

Page 5: ... and throat Vapour is harmful Inflammable do not extinguish with water Precautions Do not incinerate Avoid contact with broken leaking phials Do not purposely puncture First aid medical attention must be sought following eyes skin contact wash with clean water Sharp Edges Caution should be taken when handling the boiler to avoid sharp edges on the boiler Boiler installation and commissioning tips ...

Page 6: ...rnal controls such as a room thermostat By following this procedure if you have a subse quent problem following the addition of an external control you can eliminate the boiler from your fault analysis If the boiler is fitted with a digital programmer when setting the times for automatic opera tion remember that for every ON time there must be an OFF time to follow and that on every occasion you e...

Page 7: ...g the gas supply pressure 57 7 7 Checking the inlet pressure 57 7 8 Lighting the boiler 57 7 9 Enabling functioning of the external temperature probe by the remote control 59 7 10 Setting the K coefficient of the external temperature probe 60 7 11 Setting the pump post circulation 62 7 12 Selecting the reignition frequency 64 7 13 Checking the ignition device 65 7 14 Checking the flue system 66 7 ...

Page 8: ...er are printed on bottom right side Fig 1 1 1 1 Controls panel 1 2 Isolation valves Fig 1 2 2 3 4 5 6 7 8 2 Gas supply label 3 C h flow valve 4 Gas inlet valve 5 C h return valve 6 Condensate drain pipe 7 Main circuit drain valve 8 C h pressure relief valve pipe model and serial number of the boiler label ...

Page 9: ...ing and the timer 3 star preheating function and heating flow timer 18 LCD display RESET that takes all parameters back to the factory value occurs only by setting parameter 08 04 Reset is displayed by switch on of all symbols present on the display Press keys 13 and 17 Fig 1 3 simultaneously for 5 seconds in order to reset all the scheduling both preheating and heating After resetting or in defau...

Page 10: ...e user Constantly illumi nated boiler power delayed by inhibi tor AFCT or other events INFO menu input enabled Indicate the status of the scheduling re quest Flashing comfort program in process reduced pro gram in process The day of the week is displayed high lighting the number with the following sequence 1 Mon 7 Sun Flashing solar circuit pump in operation Solar integration at the time of d h w ...

Page 11: ...ayed without decimals but with a sign probe con nected Indicated boiler pressure Constantly illuminat ed remote control connected Flashing request from remote control in process Constantly illuminat ed pump active The icon remains on for post circulation Constantly illuminat ed boiler antifreeze active Antifrostat Constantly illumi nated system anti freeze active SIGNAL DISPLAYED BY THE LCD LCD FU...

Page 12: ...simulate running antifreeze pro tection activated LCD FUNCTION In the case of incorrect pressure the value is visualised with a flash ing symbol When pressure is achieved the symbol remains on for 15 s and then disappears Flashing high pressure 2 8 bar ON 2 6 bar OFF intermediate pres sure 0 15 P Pon rising 0 15 P Pon 0 2 decreasing pressure critical 0 00 P 0 15 bar Pump activated for the post cir...

Page 13: ...n The activation of the chimney sweep occurs configuring the param eter P09 01 and is visualized LP minimum dhw hP minimum heating cP maximum heating dP maximum dhw The transition occurs with keys 16 increase and 15 decrease dhw temperature The writing on the dis play alternates ...

Page 14: ...d h w supply checking that the pressure indicated on the bottom part of the display Fig 2 2 In the case of incorrect pressure the value is visualised with a flashing symbol Fig 2 2 high pressure 2 8 bar ON 2 6 bar OFF intermediate pressure 0 15 P Pon rising 0 15 P Pon 0 2 decreasing critical pressure too low 0 00 P 0 15 bar If you are in any doubt regarding this procedure you are advised to contac...

Page 15: ...et at the required pressure 2 3 Ignition Check that the valves located in the lower part of the boiler are open Fig 2 3 Fig 2 3 Open position Turn on the electricity supply to the boil er switching on the fused spur isolation switch The LCD display displays the state within which the boiler is found last mem orised Fig 2 4 Fig 2 4 Stand by Hyphens are turned on in sequence to simulate running Wint...

Page 16: ... C h circuit temperature The output temperature of c h water can be adjusted by acting on keys 15 reduce and 16 increase Fig 2 7 from a minimum of about 25 C to a maximum of about 85 C Press one of the two keys once to display the set value Press again to access the modification Signal given by the LCD display The heating hot water flow set temper ature and the symbol flash The background of the d...

Page 17: ...hen the zone valves are installed one controlled by the ambient thermostat and the other by the remote control it is possible to have two different heat delivery tempera tures The heating temperature of the zone valve controlled by a thermostat is configured on the boiler control panel using keys 15 and 16 Fig 2 7 The heating temperature of the zone valve controlled by remote control is configured...

Page 18: ...riod PI on confirm by pressing key 12 the subsequent off time PI off is already prompted with an additional 15 minutes minimum programming inter val to modify this press key 12 followed by key 16 and confirm by pressing key 12 Repeat this sequence for P2 on and P2 off P4 on and P4 off for every day or group of days selected Fig 2 14 Fig 2 14 If all 4 programmes P1 P4 are not used the unused progra...

Page 19: ...rackets please refer to paragraph 1 3 to page 9 2 5 Extinguishing Press the key for 2 seconds 12 Fig 2 17 until the symbol appears on the display Fig 2 18 Fig 2 17 9 10 11 12 13 14 15 16 17 Fig 2 18 If a long period of inactivity is envisioned Switch off the electricity supply to the boil er by means of the fused spur isolation switch Shut off the gas supply cock and the valves for the water circu...

Page 20: ... 2 Therefore when the boiler is not lit and used in cold weather with consequent risk of freezing do not switch off the boiler at the fused spur isolation switch or close the gas inlet cock If the boiler is deactivated have a qualified technician empty the boiler heating and domestic hot water circuit the c h system and the d h w system 3 3 Condensate drain The condensate drain must not be modi fi...

Page 21: ...nd a code that precedes the letter E and the writing RESET see LCD general features to page 10 appear on the LCD display it in dicates that the safety lock out has stopped the boiler The display background flashes Fig 3 3 Fig 3 3 For the first lighting up and following main tenance procedures for the gas supply it may be necessary to repeat the resetting operation several times so as to remove the...

Page 22: ...ature rise in the circuit can cause the pressure relief valve to open So that this does not happen and to decrease the pressure to a normal value it is advisable to vent some of the water in the appliance through the bleed valves present in the radiators Water should occasionally leak from the boiler Shut off the valves positioned under the boiler to page 19 and call an Authorised Service Centre E...

Page 23: ...ode If the boiler is connected to remote option al a code that indicates a boiler anomaly is displayed in the centre of the display The anomaly in progress is indicated by a numeric code followed by the letter E The table summarises the possible codes displayed on the remote Anomaly Code Lack of burner ignition E01 Safety thermostat lockout E02 General lockout E03 Lack of circulation pump E04 Faul...

Page 24: ... 24 USE USEFUL ADVICE To restore the normal operation of the boiler contact the Authorized Service Centre Fig 3 7 20 26 ...

Page 25: ... 25 INSTALLATION TECHNICAL INFORMATION 4 TECHNICAL INFORMATION 4 1 Overview Fig 4 1 19 20 41 39 35 29 25 22 34 30 32 33 24 38 28 31 36 40 23 37 27 42 26 43 ...

Page 26: ...ondensing heat exchanger air purger valve 20 Flue temperature probe NTC 21 C h temperature probe NTC delivery 22 C h temperature probe NTC return 23 Condensing heat exchanger 24 Safety thermostat 25 Flame detecting electrode 26 Safety thermal fuse 27 Air manifold 28 C h pressure relief valve 42 43 44 23 25 39 40 37 32 41 30 35 28 4 5 7 6 3 36 33 29 21 22 45 20 24 26 46 19 ...

Page 27: ...rnal temperature probe terminal block remote terminal block power supply terminal block external controls terminal block 35 Primary circuit pressure switch 36 Condensate trap 37 Fan 38 Air box air gas mixer 39 Ignition electrode 40 Burner 41 C h expansion tank 42 Flue outlet pipe 43 Air intake pipe 44 Flue exhaust sampling point 45 Air sampling point 46 By pass valve ...

Page 28: ...bar 0 3 Available head in 1000 l h kPa 23 bar 0 23 Seasonal efficency G20 c 88 7 Seasonal efficency G31 c 89 7 to the minimum useful output A referred to the net calorific value at 15 C and 1013 25 mbar G20 34 02 MJ m3 G31 46 34 MJ kg B referred to the gross calorific value at 15 C and 1013 25 mbar G20 37 78 MJ m3 G31 50 37 MJ kg C The value is used in the UK Government s Standard Assessment Proce...

Page 29: ...it pipes mm 80 80 ø Roof mm 80 125 Nominal heat flow rate A E kW 16 0 Exhaust temperature E C 72 0 Mass flow rate E kg s 0 0068 Flue gas figures Nominal heat input A E kW 16 0 CO2 content with gas G20 9 2 9 8 O2 content with gas G20 3 9 CO content with gas G20 ppm 84 0 Exhaust temperature E C 72 0 NOx class 5 Weighted NOx ppm 30 E Values refer tests with a 1 m flue working at the nominal heat inpu...

Page 30: ...bar 0 3 Available head in 1000 l h kPa 23 bar 0 23 Seasonal efficency G20 c 88 8 Seasonal efficency G31 c 89 8 to the minimum useful output A referred to the net calorific value at 15 C and 1013 25 mbar G20 34 02 MJ m3 G31 46 34 MJ kg B referred to the gross calorific value at 15 C and 1013 25 mbar G20 37 78 MJ m3 G31 50 37 MJ kg C The value is used in the UK Government s Standard Assessment Proce...

Page 31: ...it pipes mm 80 80 ø Roof mm 80 125 Nominal heat flow rate A E kW 25 0 Exhaust temperature E C 83 1 Mass flow rate E kg s 0 0105 Flue gas figures Nominal heat input A E kW 25 0 CO2 content with gas G20 9 0 9 8 O2 content with gas G20 3 7 CO content with gas G20 ppm 238 0 Exhaust temperature E C 83 1 NOx class 5 Weighted NOx ppm 42 E Values refer tests with a 1 m flue working at the nominal heat inp...

Page 32: ...es by pass ensures a minimum water circulation inside the con densing primary exchanger The by pass is calibrated to a differential pressure of about 0 3 0 4 bar 4 6 Expansion vessel Note this boiler is designed for opera tion only in a sealed central heating sys tem The height difference between the pressure relief valve and the highest point in the sys tem may be 10m at most For greater differen...

Page 33: ...with the current edi tion of I S 813 2002 Domestic Gas Installa tions the current Building Regulations and reference should be made to the current ETCI rules for electrical installations 5 2 Location of appliance The appliance may be installed in any room or internal space although particular atten tion is drawn to the requirements of the cur rent I E E Wiring Regulations and in Scot land the elec...

Page 34: ...rners 450 H From external corners 300 I Above ground or balcony lev el 300 J From a next door boundary 2500 K From a terminal facing a termi nal 2500 L From an opening in the car port e g door window into dwell ing NO M Vertically from a terminal in the same wall 1500 N Horizontally from a terminal in the same wall 300 O Above the roof pitch with roof slope less than or equal to 30 350 O Above the...

Page 35: ... regulations in force The condensate pipe must be fitted in ac cordance with Building Regulations Drain pipe material should be resistant to acid as the condensate is slightly acid with a pH less than 6 5 The boiler includes a trap 28 on page 25 that prevents the combustion products en tering the drain The boilers incorporate a condensate trap with a 75 mm seal to comply with BS 6798 2008 The sche...

Page 36: ...sing through ventilated spaces in roofs and under floors By pass The appliance includes an automatic by pass valve which protects the main heat exchanger in case of reduced or interrupted water circulation through the heating system due to the closing of thermostatic valves or cock type valves within the system The by pass is calibrated to assure a mini mum flow of 200 300 lts hr through the main ...

Page 37: ...ystem is fully removed in order to ensure the efficiency of the new appliance is maintained Details on flushing procedure are given in the section Initial filling of the system to page 55 of this manual 5 10 Electrical supply Warning this appliance must be earthed External wiring to the appliance must be carried out by a competent person and be in accordance with the current I E E Regula tions and...

Page 38: ...ements of the distribu tors and comply with current Regulations and laws in force The safety relief valve and the condensate drain must be connected to a suitable drain or discharge in a safe manner The electrical wiring must conform with cur rent Regulations in particular the boiler must be earthed using the cor rect bonding clamp a fused spur isolation switch must be in stalled near to the boile...

Page 39: ... product in the circulating water The latter option in particular not only cleans out the system but also has an anti corrosive effect by promoting formation of a protective skin on metal surfaces and neu tralising gases present in the water We recommend the use of a suitable uni versal inhibitory to protect the c h system from corrosion 6 3 Installing the bracket Precautions Before mounting the b...

Page 40: ...ns Pipe sizes o d Gas c h return c h flow ø 22 Pressure relief valve ø 15 Condensate drain ø 25 plastic sizes in mm o d Condensate drain to be realised with min pipe ø 30 mm 6 6 Mounting the boiler Assemble the pre piping kit bracket by screwing the four screws J Fig 6 3 Fix the c h valves L and the gas cock M with the remaining forks K to the prepiping kit bracket Mount the bracket of the prepipi...

Page 41: ...m For a correct installation of the flue pipe re fer to the sheet provided together with the pre selected kit The horizontal routes of the flue pipes must incline about 1 5 degrees 25 mm per me ter therefore the terminal must be higher than the intake at the boiler The single coaxial pipe with the terminal must be fitted horizontal as the drainpipe is already angled with the correct incline CORREC...

Page 42: ... of flu The flue exhaust air intake can be installing in the mode C13 C33 C53 C63 Refer to the sheet provided with the pre selected kit in separate packaging The horizontal routes of the flue pipes must incline about 1 5 degrees 25 mm per me ter The terminal must be higher than the infeed boiler side The single coaxial pipe with terminal must be horizontal because the drain pipe is al ...

Page 43: ...with the aid of exten sions must not exceed 10 m for Activ A Plus 16S Activ A Plus 25S in horizontal and however the terminal must always exhaust horizontally Additional bends at 45 or 90 Fig 6 8 C Coaxial bends Ø 60 100 mm These bends when used with the pipe re duce the maximum length of the flue pipe by For the bend of 45 loss 0 5 m For the bend of 90 loss 1 m Exhaust intake split pipes kit Ø 80...

Page 44: ...rers Type C63 it is necessary that these are approved and in the case of flue pipes it is necessary to use materials com patible with condensation products During the pipes dimensioning phase take into consideration the static pressure resi due of the fan Useful static pres sure at nominal heat input 16 kW Pa 25 kW 120 Pa Overheated flue 16 kW C 25 kW C Maximum recircula tion of CO2 in the suction...

Page 45: ... vertical section Extensions and elbows can be added to ex tend the kit s length Maximum equivalent length a b Fig 6 13 of 15 metres for Activ A Plus 16S Activ A Plus 25S can be achieved utilising extensions Each additional elbow reduces the overall acceptable length of the flue system as fol lows 45 60 100 mm reduce length by 0 5 m 90 60 100 mm reduce length by 1 m 45 60 mm reduce length by 0 65 ...

Page 46: ...ires to terminals to which the room thermostat must be connected Connect the earth cable yellow green to an effective earth plant The earth cable must be the longest of the electric power supply cables The appliance s electric power supply cable or wire must have a section no less than 0 75 mm2 it must be kept away from hot or sharp parts and however conform to the technical regulations in force F...

Page 47: ... 3 when connecting any type of ambient thermostat The electric cables of the ambient thermo stat are inserted between clamps 1 and 3 as in Fig 6 19 or Fig 6 20 or Fig 6 21 Be careful not to connect pow ered cables on clamps 1 and 3 Fig 6 19 1 T Potential clean contacts of the Ambient Thermostat Fig 6 20 N L 3 2 1 Room thermostat 230V rating T Fig 6 21 Room thermostat 1 2 3 L N with delay resistor ...

Page 48: ...ps R Fig 6 18 Connection of a remote controlled zone valve Connecting a zone valve to the terminal of the auxiliary card and the remote control to the specific terminals it is possible to control this zone with the same remote control Moreover should another zone controlled by an ambient thermostat be present it is possible to regulate both zones with a dif ferent delivery temperature In order to ...

Page 49: ...card terminal board Zone valve To remotely connect utilise the terminals in dicated in Fig 6 30 6 11 External frost protection Connect the frost thermostat between ter minals 1 and 2 as shown in Fig 6 26 or Fig 6 27 Do not connect live wires to terminals to which the frost thermostat must be con nected Fig 6 26 Room thermostat N L 3 2 1 230V rating Frost Thermostat 230V rating T T Fig 6 27 1 2 3 L...

Page 50: ...re the component must be con nected to The lower part shows how to realize a sys tem that provides independent timed and thermostatic control of heating and hot wa ter In Fig 6 28 the boiler is permanently con nected to the main supply The boiler op eration is controlled by the external control terminal block In Fig 6 29 the boiler is not permanently connected to the supply line The boiler op erat...

Page 51: ...om thermostat A B 5 4 Cylinder thermostat C 1 2 8 7 6 GY WH OR GRYE BU 2 3 8 5 7 MAINS 230V a c Switched 3 Amp fused spur L N 2 3 1 Programmer HTG HW OFF HW ON L N 2 1 4 6 7 10 way junction box Valve colour key WH White GRYE Green Yellow GY Grey OR Orange BU Blue Mid position diverter valve HTG Heating HW ON HotWaterON HW OFF HotWaterOFF BK Black BN Brown 2 3 1 8 Electric supply Room thermostat Fr...

Page 52: ...er HTG HW OFF HW ON L N Do not remove room thermostat link Room thermostat A B 4 5 Cylinder thermostat C 1 2 8 7 6 GY WH OR GRYE BU 2 3 8 5 7 MAINS 230V a c Switched 3 Amp fused spur L N 2 3 1 Programmer HTG HW OFF HW ON L N 2 1 4 6 7 10 way junction box Mid position diverter valve HTG Heating HW ON HotWaterON HW OFF HotWaterOFF Valve colour key WH White GRYE Green Yellow GY Grey OR Orange BU Blue...

Page 53: ...r different channels to the voltage ones 230 V since they are powered at a safe ty low voltage and their maximum length must not exceed 20 meters Use the clamps indicated in Fig 6 30 to connect the external probe Fig 6 30 Ambient thermostat External Probe Electric power supply Remote The route of the external probe s connec tion wires must follow the route indicated in Fig 6 17 Allow the cables to...

Page 54: ...umps flow rate Therefore by means of a hydraulic separa tor the secondary circuit s flow rate is put into circulation only when the relative pump is on When the pump of the secondary is off there is no circulation in the correspond ing circuit and therefore the entire flow rate pushed by the primary is by passed through the separator Thus with the hydraulic separator it is pos sible to have a cons...

Page 55: ...2 7 2 Electrical installation Preliminary electrical system checks to en sure electrical safety shall be carried out by a competent person i e polarity earth continu ity resistance to earth and short circuit If a fault has occurred on the appliance the fault finding procedure should be followed as specified in the service manual 7 3 Gas supply installation Inspect the entire installation including...

Page 56: ...e in line with BS7593 2006 Treatment of Water in d h w c h Systems When the installation and second filling are completed turn on the c h system and run it until the temperature has reached the boiler operating temperature The system must then be immediately flushed through This procedure must be repeated twice more During this operation a c h flushing de tergent must be used in the quantities as ...

Page 57: ...ply pressure by using the 33 point in Fig 7 6 and compare the value read with that reported on the Gas supply pressure table in the Technical Data sec tion pag 28 Activ A Plus 16S pag 30 Activ A Plus 25S Close well the pressure point 33 in Fig 7 6 Fig 7 6 A B 33 If it does not comply with the required pres sure check the gas supply line and governor for faults and or correct adjustment Where the b...

Page 58: ...hat the ambient thermostat is in the heat request position Check the correct functioning of the boiler both in domestic hot water mode and in heating mode Check the gas pressures and flow rates as shown in section GAS CONVERSION to page 69 of this booklet Check that the condensate produced dur ing functioning fills the pipe and is regularly drained in the draining plant pipe Switch off the boiler ...

Page 59: ...ctioning of the external temperature probe by the remote control Functioning with the external probe in the boiler must be enabled if the remote control optional is used Act on the programming of the REMOTE con trol to enable its functioning if the remote con trol optional is used Press button for more than 3 seconds to enter in mode Fig 7 11 0 2 1 8 1 21 15 6 3 9 Press buttons and at the same tim...

Page 60: ...e K coefficients is a parameter that increas es or reduces the boiler flow temperature when the outside temperature changes When installing the external probe it is neces sary to set this parameter based on the effi ciency of the heating plant in order to optimise the flow temperature Fig 7 16 E g In order to have a flow temperature at the heating plant of 60 C with an external tem perature of 5 C...

Page 61: ...in relation to the K coefficient set However if the ambient temperature is not comfortable the flow temperature of the heat ing plant can be increased or reduced by 15 C by acting on keys 15 reduce and 16 increase Fig 7 17 Fig 7 21 C h flow temperature C 20 20 15 10 5 0 5 10 15 20 25 30 40 50 60 70 80 15 C 15 C External temperature C K 1 5 The temperature trend when changing the setting made with ...

Page 62: ...in programming mode by pressing keys 12 15 16 Fig 7 24 for 10 seconds at the same time until the letters P01 are displayed on the LCD display indicating that parameter 01 Fig 7 25 has been acti vated Fig 7 24 9 10 11 12 13 14 15 16 17 Fig 7 25 Scroll the various parameters using keys 15 or 16 until the letters P11 are displayed on the LCD display indicating that parameter 11 Fig 7 26 has been acti...

Page 63: ...MOTE control Press button for more than 3 seconds to enter in mode Fig 7 28 Fig 7 28 0 2 1 8 1 21 15 6 3 9 Press buttons and at the same time to enter transparent programming Fig 7 29 Fig 7 29 Press buttons or to display the PM11 program of the pump post circula tion Fig 7 30 Fig 7 30 To modify the programmed SET act on buttons or and wait for the pro grammed number to flash Fig 7 31 Each step inc...

Page 64: ...ing keys 15 or 16 until the letters P10 are displayed on the LCD display indicating that parameter 10 Fig 7 34 has been activated Fig 7 34 It is possible to modify parameter 10 by 00 0s to 100 510s using keys 9 or 10 each increase or reduction by a unit on the dis play corresponds to 5 seconds Ex 36 180 seconds The writing P10 SEt alternates on the dis play Fig 7 35 Fig 7 35 By pressing key 12 Fig...

Page 65: ... or decreased corre sponds to 2 seconds To modify the programmed SET act on but tons or and wait for the number programmed to flash Fig 7 39 Fig 7 39 To exit programming press button 7 13 Checking the ignition device With the burner on high flame close the gas cock After four ignition attempts about four min utes the boiler does not function and a code that alternates between the letter E and the ...

Page 66: ...he greatest possible fuel economy Explain the function and use of the function selector Explain and demonstrate the function of time and temperature controls if fitted Explain how to turn off the appliance for both short and long periods and advise on the pre cautions necessary to prevent damage should the appliance be inoperative when freezing conditions may occur Fill in the details required on ...

Page 67: ...d for the central heating requirement By pressing key 12 Fig 7 43 confirmation of the inserted value is obtained Press keys 15 or 16 Fig 7 43 to exit with out changing the value Exiting the programming mode is auto matic after 15 minutes or by cutting power 7 18 Setting record Important at the end of the setting opera tion it is important to fill update the table Fig 7 45 This to allow a correct s...

Page 68: ...5 16 Fig 7 46 for 10 sec onds at the same time until the letters P01 are displayed on the LCD display and the value of the parameter 40 Activ A Plus 16S or 41 Activ A Plus 25S indicating that pa rameter 01 Fig 7 47 has been activated Fig 7 46 9 10 11 12 13 14 15 16 17 Fig 7 47 Scroll the various parameters using keys 15 or 16 until the letters P02 are displayed on the LCD display indicating that p...

Page 69: ... fixing fork A and remove the pipe B Fig 8 1 Fig 8 1 A B C Carry out gas conversion by correctly re placing the gas restrictor Fig 8 2 refer ring to the Technical Data section page 28 Activ A Plus 16S page 30 Activ A Plus 25S Fig 8 2 Gas restrictor Attention to reassemble repeat the operations carried out in re verse order Be careful not to damage the OR gasket of the gas pipe when inserting the p...

Page 70: ...1 By pressing key 12 Fig 8 3 confirmation of the inserted value is obtained Press keys 15 or 16 Fig 8 3 to exit with out changing the value Exiting the programming mode is au tomatic after 15 minutes or by cutting power Calibrate the gas valve according to the instructions given in the Service manual section Gas valve Adjustment Reposition the controls panel and remount the front panel of the body...

Page 71: ...aning maintenance opening or dismantling boiler panels The En gineer should complete the Service Interval Record at the back of the manual 9 2 Programming the maintenance period Activate the clock function as described in Time Day Date setting to page 15 Enter programming mode by holding down keys 12 15 16 together for 10 seconds Fig 9 1 until the LCD display indicates the letters P01 indicating e...

Page 72: ...ce The remaining months until maintenance will be replicated in read only in the info section under value J15 N B the flashing symbol in Fig 9 5 is not an error The boiler continues to run normally but it indicates the expiry of the maintenance pe riod Fig 9 5 9 3 Dismantling the external panels Front panel Unscrew screws A and remove the front panel D by pulling it and pushing it towards the top ...

Page 73: ...anel Fit the front panel D hooking it on the up per side Push the spring towards the internal side of the boiler and simultaneously push the front case panel D until it is completely hold in place Fig 9 8 step 1 2 Repeat the same operation on the opposite side of the front panel D Fig 9 8 step 3 4 Ensure that the front panel edge is close fitting to the side panels Lock in place the panel D with t...

Page 74: ...O P Q Remove the body s front panel and turn the controls panel see Dismantling the exter nal panels to page 72 Unscrew the connector L remove the fixing fork K and remove the pipe J Unhook the silencer pipe Insert a flat screwdriver in the connector re cess P and lever towards the bottom dis connect the connector at the same time M by pulling towards the front M Fig 9 12 Disconnect the fan connec...

Page 75: ...ill be valuated and carried out by an Authorised Assistance Centre Technician Attention to reassemble repeat the operations carried out in re verse order Be careful not to damage the OR gasket of the gas pipe when inserting the pipe in Air box After any service operation on the components of the gas circuit check all the connections for gas leaks 9 7 Check the pressure of the heat ing expansion ve...

Page 76: ...tent ppm 84 Flue gas temperature C 72 0 Values refer to tests with a an 80 mm double exhaust split by 1 1 m and natural gas G20 and a supply return heating temperature of 60 80 C Fig 9 17 Model Activ A Plus 25S Nominal heat input A E kW 25 0 Nominal efficency 97 4 Combustion efficency 97 5 Air excess n 1 23 Flue gas CO2 content 9 0 9 8 Flue gas O2 content 3 7 Flue gas CO content ppm 240 Flue gas t...

Page 77: ...orrect concentration of inhibitor in the heat ing water 9 14 Setting the boiler chimney sweep function With the boiler set in chimney sweep mode it is possible to exclude some boiler automatic functions making check and control opera tions easier Enter in programming mode by pressing keys 12 15 16 Fig 9 19 for 10 seconds at the same time until the letters P01 are displayed on the LCD display indic...

Page 78: ...D display displays the letters cP that alternate with the heating water temperature value e g 78 the chim ney sweep function is at maximum even tually range rated output in heating mode Fig 9 23 Fig 9 23 Chimney sweep function at maximum out put in domestic hot water mode Press further key 16 to vary again the out put in chimney sweep mode when the LCD display displays the letters dP that alternat...

Page 79: ... 79 MAINTENANCE MAINTENANCE Fig 9 25 Winter ...

Page 80: ...R MANUFACTURER S INSTRUCTIONS THE SYSTEM CLEANER USED THE INHIBITOR USED GAS RATE BURNER OPERATING PRESSURE IF APPLICABLE CENTRAL HEATING FLOW TEMPERATURE CENTRAL HEATING RETURN TEMPERATURE m3 hr ft hr N A mbar C C HAS A WATER SCALE REDUCER BEEN FITTED WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED YES NO GAS RATE MAXIMUM BURNER OPERATING PRESSURE IF APPLICABLE COLD WATER INLET TEMPERATURE HOT WATER O...

Page 81: ... DATE SERVICE 3 ENGINEER NAME COMPANY NAME TEL No Gas Safe Register ID CARD SERIAL No COMMENTS SIGNATURE DATE SERVICE 4 ENGINEER NAME COMPANY NAME TEL No Gas SafeRegister ID CARD SERIALNo COMMENTS SIGNATURE DATE SERVICE 5 ENGINEER NAME COMPANY NAME TEL No Gas Safe Register ID CARD SERIAL No COMMENTS SIGNATURE DATE SERVICE 6 ENGINEER NAME COMPANY NAME TEL No Gas SafeRegister ID CARD SERIALNo COMMEN...

Page 82: ... 82 NOTES ...

Page 83: ......

Page 84: ... 1796221020 17962 2102 0 2811 84A5 UK Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Sales Tel 01922 714600 Tech Service Tel 01922 714636 www biasi co uk 08 07 2011 N ...

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