Biasi M300V.2025 SM User Manual And Installation Instructions Download Page 92

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Biasi UK Ltd

Commercial Road

Leamore Enterprise Park

WALSALL

WS2 7NQ

Sales Tel. 01922 714600

Tech. Service Tel. 01922 714636

www.biasi.co.uk

*1796234640*

17962.3464.0

4221

92A5

Summary of Contents for M300V.2025 SM

Page 1: ...msealed high efficiency gas boiler User manual and Installation instructions RINNOVA ADAPTIVE Models G C Appl No M300V 2025 SM 47 583 46 COMBI BOILER M300V 2530 SM 47 583 47 COMBI BOILER M300V 3035 SM 47 583 48 COMBI BOILER ...

Page 2: ...c heating and hot water systems in the UK and to encourage regular servicing to optimise safety efficiency and performance Benchmark is managed and promoted by the Heating and Hot water Industry Council For more information visit www hhic co uk 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 in...

Page 3: ... All installations must be notified to Local Area Building Control either directly or through a Competent Persons Scheme A Building Regulations Compliance Certificate will then be issued to the customer who should on receipt write the Notification Number on the Bench mark Checklist This product should be serviced regularly to optimise its safety efficiency and performance The service engineer shou...

Page 4: ...com patible with its performance and output can be used only for those purposes for which it has been specially designed must not be touched by children 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...

Page 5: ...t be sought following eye contact or prolonged reddening of the skin Sharp Edges Caution should be taken when handling the boiler to avoid sharp edges on the boiler Boiler installation and commissioning tips The installation must be carried out by a qualified Gas Safe Registered Engineer who will be responsible for observing the current Regulations and the completion of the Benchmark Gas Boiler Sy...

Page 6: ... temperature of the central heating system at very low levels For underfloor heating system a temperature limiting device e g a safety ther mostat is recommended to stop the boiler in case that the water temperature exceeds the design temperature You are strongly advised to flush out the system both hot and cold in order to remove any system and installation debris to the British Standard BS 7593 ...

Page 7: ...14 Example of hydraulic systems with hydraulic separator 56 7 COMMISSIONING 58 7 1 Warnings 58 7 2 Electrical installation 58 7 3 Gas supply installation 58 7 4 Filling the D H W system 58 7 5 Initial filling of the system 58 7 6 Condensate pipe and traps 60 7 7 Checking the gas supply pressure 60 7 8 Checking the inlet pressure 61 7 9 Lighting the boiler 61 7 10 Checking the ignition device 62 7 ...

Page 8: ...t off cock for the D H W inlet The figures in this manual only show one of the possible ways of installing cocks pipes and fit tings Fig 1 2 2 4 3 5 6 8 10 9 7 11 2 Gas supply label 3 Condensate drain pipe 4 C H flow valve 5 D H W outlet pipe 6 Gas inlet valve 7 C H pressure relief valve pipe 8 D C W inlet valve 9 Main circuit drain valve 10 C H return valve 11 Model and serial number of the boile...

Page 9: ... D H W temperature reduce key 14 Reset Stand by Winter Summer key 15 C H temperature reduce key 16 C H temperature increase key 17 LCD display RESET that takes all parameters back to the factory value occurs only by setting parameter P30 04 Reset is displayed by switch on of all symbols present on the display ...

Page 10: ...tem loading Flashing in the case of low system pressure or if viewing the pressure from the INFO menu Stays on flame present Flashing drain upon ignition in progress A Stays on maintenance due pre warning Flashing maintenance re quired or maintenance due b Stays on lockout error The boiler can be restarted by the user by pressing the reset but ton Stays on remote control con nected Flashing reques...

Page 11: ...lve control Relay Failure E22 b EVG lockout flame af ter closing valve Ref EVG E23 A Gas valve modulator disconnected LCD FUNCTION E24 A Anomaly due to prob able chimney obstruc tion E25 b Flame loss for more than 6 consecutive times E26 A Maximum deviation fault between the 2 heating NTC probes E40 A Incorrect mains fre quency detected E42 A Buttons fault E44 b Fault of cumulative gas valve timeo...

Page 12: ...cons and digits light up for 2 sec onds to check opera tion of the LCD If the pressure is not correct the value is dis played with the flashing symbol Next maintenance due date factory setting 12 months In the event of an error this has great er priority than mainte nance due date LCD FUNCTION Maintenance overdue In the event of an error this has greater priority than maintenance due date Pump act...

Page 13: ...he chim ney sweep function set parameter P32 1 4 The following is displayed LP minimum D H W hP minimum output in heating mode cP maximum output in heating mode dP maximum D H W The transition occurs with buttons 16 in crease and 13 de crease D H W tem perature 3 star preheating func tion active When the symbol flashes the function is in process LCD FUNCTION Constantly illuminated solar control un...

Page 14: ...e reading on the pressure gauge is below that shown in Fig 2 2 then the system will require topping up A filling loop is normally provided by the Installer for this purpose If you are in any doubt regarding this procedure you are advised to contact your Installer or an Approved Engineer This appliance is provided with a built in anti freeze system that operates the boiler when the temperature is b...

Page 15: ...cess will vent through the automatic air purger fitted to the boiler You may also find it necessary to vent air from your radia tor circuit using your radiator key however be aware that excessive venting will cause the pressure in the system to drop Always ensure that the pressure gauge is set at the required pressure 2 3 Ignition Check that the valves located in the lower part of the boiler are o...

Page 16: ...pressing keys 15 reduce and 16 increase Fig 2 7 from a minimum of about 25 C to a maximum of about 80 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 flow set temperature and the symbol flash The background of the display is illuminated Fig 2 9 Fig 2 9 Adjustment of temperature WITHOUT the external tempera...

Page 17: ... 60 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 set value of the D H W and the symbol flash The background of the dis play is illuminated Fig 2 11 Fig 2 11 Adjustment Adjust the D H W temperature to a value suited to your needs Reduce the necessity of mixing hot water with cold water In this way the automatic ...

Page 18: ... until the symbol appears on the display the dashes light up in sequence to simulate a scrolling motion Fig 2 15 Fig 2 14 12 13 14 15 16 17 Fig 2 15 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 circuits fitted under the boiler Fig 2 16 Fig 2 16 Clos...

Page 19: ...ock 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 fied or blocked Blockage of the condensate drain caused by debris or freezing can cause automatic shutdown of the boiler If freezing is suspected and the pipe run is ac cessible an attempt...

Page 20: ...o repeat the resetting operation several times so as to remove the air present in the pipe work Safety lock out may occur even in case of a blockage of the condensate drainage e g plugged drain pipe It is advisable to check the condensate drainage pipe and traps for cleanness Press the reset key on the boiler control panel 14 Fig 3 1 to reset its functioning In this case and in case of per sistent...

Page 21: ...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 Reduced domestic hot water tempera ture The likely causes may be impurities caught in the domestic hot water flow switch filter or limescale deposited in the d...

Page 22: ...perature NTC return J06 value Domestic set J07 value Temp D H W input if foreseen J08 Temp D H W output J09 value D H W capacity J10 value Flue gas temperature if foreseen J11 Fan speed J12 value Pressure transducer pressure if foreseen J13 Ionization value J14 value Number of months to maintenance J15 value 3 star status ON 01 OFF 00 J16 value Modulation percentage J17 value Pump modulation perce...

Page 23: ... safety device The flue probe 18 intervenes when the flue tem perature exceeds 110 C placing the boiler in safety block switching it off To reset normal boiler functioning just press the 14 Fig 3 7 key If flue probe 18 does not intervene and therefore does not send the boiler into secu rity lockout flue thermal fuse 18 is triggered as an additional safety device to protect the flue outlet pipe To ...

Page 24: ... 24 INSTALLATION TECHNICAL INFORMATION 4 TECHNICAL INFORMATION 4 1 Overview Fig 4 1 18 20 38 22 21 37 35 34 30 33 27 29 28 39 31 26 3 7 32 25 9 24 23 19 36 40 43 44 ...

Page 25: ... W inlet valve 9 Main circuit drain valve 10 C H return valve 18 Flue temperature probe NTC and Safety thermal fuse 19 C H temperature return probe NTC 20 Condensing heat exchanger 21 NTC heating delivery probe NTC maxi mum temperature 22 Flame detecting electrode Ignition elec trode 43 44 45 20 22 38 36 28 40 25 31 35 23 6 10 9 3 4 8 5 32 27 29 24 19 30 39 34 42 41 33 46 18 47 21 ...

Page 26: ...e NTC 31 Primary circuit pressure switch 32 Condensate trap 33 D H W heat exchanger 34 Three way diverter valve 35 Three way electric actuator motor 36 Fan 37 Air gas mixer 38 Burner 39 Domestic hot water flow switch 40 C H expansion tank 41 Domestic water circuit filter 42 Domestic hot water flow limiter optional 43 Flue outlet pipe 44 Air intake pipe 45 Flue exhaust sampling point 46 Air samplin...

Page 27: ...ping of water circulation in the heating system due to the closing of thermostatic valves or circuit elements valves the by pass ensures a minimum water circulation inside the condensing primary exchanger The by pass is calibrated to a differential pressure of about 0 3 0 4 bar 4 4 Expansion vessel Note this boiler is designed for opera tion only in a sealed central heating sys tem The height diff...

Page 28: ... Min Max flow temperature settings C 25 80 Maximum pressure kPa 300 bar 3 0 Minimum pressure kPa 30 bar 0 3 Available head in 1000 l h kPa 34 0 bar 0 34 Seasonal efficiency G20 c n a Seasonal efficiency G31 c n a 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 mba...

Page 29: ...ating A N 2 2 AF Flue design Boiler type B23P C13 C33 C43 C53 C63 C83 C93 Ø Coaxial mm 60 100 Ø Twin split pipes mm 80 80 Ø Roof mm 60 100 Ø Roof mm 80 125 Nominal heat flow rate A E kW 26 0 Exhaust temperature E C 78 0 Mass flow rate E kg s 0 01 Flue gas figures Nominal heat input A E kW 26 0 CO2 content with gas G20 8 5 9 5 O2 content with gas G20 4 8 CO content with gas G20 ppm 220 0 Exhaust te...

Page 30: ... range min max 8 5 9 5 CO2 content with gas G31 range min max 9 6 10 6 Minimum heat input A E kW 3 0 CO2 content with gas G20 range min max 8 5 9 5 CO2 content with gas G31 range min max 9 5 10 5 Other specifications Height mm 700 Width mm 400 Depth mm 300 Weight dry kg 31 5 Water volume in the boiler up to 1 bar l kg 2 0 2393 ...

Page 31: ...0 of rated heat output and low temperature regime η1 98 9 Auxiliary electricity consumption Other items At full load elmax 0 03 kW Standby heat loss Pstby 0 11 kW At part load elmin 0 01 kW Ignition burner power con sumption Pign kW In standby mode PSB 0 00 kW Annual energy consumption QHE 63 GJ Sound power level indoors LWA 49 dB Emission of nitrogen oxides NOx 44 mg kWh For combination heaters D...

Page 32: ...ng Min Max flow temperature settings C 25 80 Maximum pressure kPa 300 bar 3 0 Minimum pressure kPa 30 bar 0 3 Available head in 1000 l h kPa 32 0 bar 0 32 Seasonal efficiency G20 c n a Seasonal efficiency G31 c n a 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 m...

Page 33: ...ating A N 2 2 AF Flue design Boiler type B23P C13 C33 C43 C53 C63 C83 C93 Ø Coaxial mm 60 100 Ø Twin split pipes mm 80 80 Ø Roof mm 60 100 Ø Roof mm 80 125 Nominal heat flow rate A E kW 31 0 Exhaust temperature E C 78 0 Mass flow rate E kg s 0 01 Flue gas figures Nominal heat input A E kW 31 0 CO2 content with gas G20 8 5 9 5 O2 content with gas G20 4 8 CO content with gas G20 ppm 190 0 Exhaust te...

Page 34: ... range min max 8 5 9 5 CO2 content with gas G31 range min max 9 6 10 6 Minimum heat input A E kW 3 8 CO2 content with gas G20 range min max 8 5 9 5 CO2 content with gas G31 range min max 9 5 10 5 Other specifications Height mm 700 Width mm 400 Depth mm 300 Weight dry kg 36 0 Water volume in the boiler up to 1 bar l kg 2 5 2394 ...

Page 35: ...0 of rated heat output and low temperature regime η1 98 8 Auxiliary electricity consumption Other items At full load elmax 0 04 kW Standby heat loss Pstby 0 11 kW At part load elmin 0 01 kW Ignition burner power con sumption Pign kW In standby mode PSB 0 00 kW Annual energy consumption QHE 78 GJ Sound power level indoors LWA 50 dB Emission of nitrogen oxides NOx 34 mg kWh For combination heaters D...

Page 36: ...ting Min Max flow temperature settings C 25 80 Maximum pressure kPa 300 bar 3 0 Minimum pressure kPa 30 bar 0 3 Available head in 1000 l h kPa 32 0 bar 0 32 Seasonal efficiency G20 c n a Seasonal efficiency G31 c n a 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...

Page 37: ...ating A N 2 2 AF Flue design Boiler type B23P C13 C33 C43 C53 C63 C83 C93 Ø Coaxial mm 60 100 Ø Twin split pipes mm 80 80 Ø Roof mm 60 100 Ø Roof mm 80 125 Nominal heat flow rate A E kW 34 7 Exhaust temperature E C 78 0 Mass flow rate E kg s 0 02 Flue gas figures Nominal heat input A E kW 34 7 CO2 content with gas G20 8 5 9 5 O2 content with gas G20 4 8 CO content with gas G20 ppm 200 0 Exhaust te...

Page 38: ... range min max 8 5 9 5 CO2 content with gas G31 range min max 9 6 10 6 Minimum heat input A E kW 3 8 CO2 content with gas G20 range min max 8 5 9 5 CO2 content with gas G31 range min max 9 5 10 5 Other specifications Height mm 700 Width mm 400 Depth mm 300 Weight dry kg 36 0 Water volume in the boiler up to 1 bar l kg 2 5 2395 ...

Page 39: ...0 of rated heat output and low temperature regime η1 99 0 Auxiliary electricity consumption Other items At full load elmax 0 05 kW Standby heat loss Pstby 0 11 kW At part load elmin 0 01 kW Ignition burner power con sumption Pign kW In standby mode PSB 0 00 kW Annual energy consumption QHE 94 GJ Sound power level indoors LWA 50 dB Emission of nitrogen oxides NOx 28 mg kWh For combination heaters D...

Page 40: ...lations 5 1 Related documents The installation of this appliance must be in accordance with the relevant requirements of the current Gas Safe Installation Use Regulations the Local Building Regulations the current I E E Wiring Regulations the Regulations and by laws of the local water un dertaking and in Scotland in accordance with the Building Standards Scotland Regulation Health and safety docum...

Page 41: ...s into another room or space as an outhouse or lean to It is important that the position of the terminal allows a free passage of air across at all times The terminal should be located with due regard for the damage or discoloration that might occur to building products in the vicinity In cold and or humid weather water vapour may condense on leaving the flue terminal the effect of such steaming m...

Page 42: ...l structure on the roof 600 Q Above intersection with the roof 600 R From a roof window and terminal 600 S From a roof window and terminal 2 500 In addition for temperature and structural reasons the terminal should not be near than 150 mm to an opening in the building fabric formed for the purpose of accommodating a built in element such as a sealed window frame A heat protection shield should al...

Page 43: ...BS 6798 2008 The schematic diagrams of possible connec tions are given in Fig 5 2 and Fig 5 3 The length of the condensate pipe should be kept to a minimum any external pipe should not be more than 3 m in 32 mm pipe and insu lated to prevent freezing To avoid condensate being trapped the drain pipe should be run with a fall of at least 2 5 45 mm m away from the boiler the number of bends and joint...

Page 44: ...2003 BSEN 14446 2004 the following notes are given for general guidance For Ireland IE refer to I S 813 2002 Pipework Copper tubing to BSEN 1057 is recommended for water pipes Jointing should be either with capillary soldered or with compression fittings Where possible pipes should have a gradient to ensure air is carried naturally to air release points and water flows naturally to drain taps The ...

Page 45: ...d replacing water lost during servicing must be provided and it must comply with local water authority regulations The correct method is shown in Fig 5 5 The temporary connection must be removed immediately after filling Fig 5 5 Temporary connection Control valve Control valve Double check valve Supply pipe cold water inlet C H return pipe The installer should ensure that no leaks ex ist either in...

Page 46: ...pply The mains supply to this appli ance must be protected with a 3A mains fuse under no circum stance should this fuse rating be exceeded The method of connection to the electricity supply must facilitate complete electrical iso lation of the appliance by the use of a fused spur isolation switch Its installation permits a complete switching off in the conditions of the overvoltage category III Al...

Page 47: ...rom failure to com ply with such provisions For Propane the appliance must also con form with the requirements 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 discharged in a safe manner The electrical wiring must conform with cur rent Regulations in particular the boiler must be ea...

Page 48: ...alising gases present in the water We recommend the use of a suitable Build cert approved universal inhibitor to protect the C H system from corrosion Biasi UK strongly recommend that matched system chemicals are used this will ensure that no unwanted chemical reactions take place as system chemical manufactures en sure own brand compatibility 6 3 Installing the bracket Precautions Before mounting...

Page 49: ...ings Functions Pipe sizes o d Gas C H return C H flow Ø 22 mm D C W inlet Ø 15 mm D H W outlet Ø 15 mm Pressure relief valve Ø 15 mm Condensate drain Ø 20 mm rubber sizes in mm o d Condensate drained with Ø 21 5 mm solvent weld pipe 6 6 Mounting the boiler Take the protective caps off the boiler pipework Thoroughly clean the connections Fix the water valve O to position J Fig 6 2 using the gasket ...

Page 50: ...e the terminal must be higher than the intake at the boiler The standard horizontal flue kit must be fit ted horizontal as the inner flue exhaust pipe is already angled with the correct incline CORRECT system for installing the wall flue Fig 6 5 A S ASA A air intake S flue exhaust 6 8 Choice of flue The flue exhaust air intake can be installed in the mode C13 C33 C53 C63 The terminal must be highe...

Page 51: ...h 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 mm Fig 6 7 Fig 6 8 This kit allows the flue exhaust to be sepa rated from the air intake Split pipes kit Ø 80 mm Minimum length 0 5 m Maximum length a b 40 m N B The air intake and the flue outlet must not terminate on opposite sides of the buildin...

Page 52: ... coaxial flue 0 45 0 95 m Maximum length a b 15 m This kit allows the products of combustion to be discharged at a different location to the air intake to avoid nuisance issues Fig 6 10 90 1 m 45 0 5 m 90 0 85 m 45 0 65 m ø 60 mm ø 60 100 mm 60 mm elbows and extensions can be add ed to the vertical section Each additional elbow reduces the overall acceptable length of the flue system as fol lows F...

Page 53: ... For the bend of 90 60 mm loss 0 85 m The chart Fig 6 12 gives the maximum al lowed value for a b of Fig 6 11 Fig 6 12 a vertical length m b horizontal length m 0 1 2 3 4 5 6 7 8 9 10 11 0 1 2 3 4 5 6 7 8 9 10 11 Allowed values o d u A Plume deflector is available to assist in overcoming boundary nuisance issues Fig 6 13 6 9 Electric connection Unscrew screws R and remove the front panel S by pull...

Page 54: ... the boiler Fig 6 17 keeping the same connections for the live brown wire and the neutral blue wire External 3A fuse or fused plug with same current rating is recommended Connect the earth cable yellow green to an effective earth plant Fig 6 17 Electric power supply The earth cable must be the longest of the electric power supply cables The appliance s electric power supply cable or wire must have...

Page 55: ...the room ther mostat must be connected Fig 6 19 Voltage free contacts for the Ambient Thermostat or Remote Control External sensor The thermostat must be insulation class II or must be correctly connected to earth Allow the cables to exit the boiler by using the relevant cable clamps X Fig 6 18 Connecting the zone valves controlled by the ambient thermostat Fig 6 20 L N V T Zone valve with micro c...

Page 56: ...al probe to the boiler must cover 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 21 to connect the external probe Fig 6 21 Voltage free contacts for the Ambient Thermostat or Remote Control External sensor Allow the cables to exit the boiler by using the relevant cable...

Page 57: ...tion 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 constant flow rate production circuit and a variable flow rate distribution circuit Hydraulic system examples Top zone low temperature zone Fig 6 22 S Low temperature Hight temperature External probe Top zone 2 lo...

Page 58: ...e 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 the gas meter test for tightness and purge all as described in BS 6891 For Ireland IE refer to I S 813...

Page 59: ...th 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 specified by...

Page 60: ...ig 7 4 key for 5 seconds until the symbol appears on the LCD display Fig 7 3 7 6 Condensate pipe and traps The full length of the condensate pipe should be check for leaks Before running the boiler ensure that the built in condensate trap and any other trap in the drain system is correctly filled with water Fill the built in condensate trap by removing the flue elbow and pour ing a cupful of water...

Page 61: ... ply which has a zero set governor then it is necessary under the Gas Safe Installation and Use Regulations 26 9 to perform a combustion analysis test for CO CO2 The limits for the boiler is given in Technical Data section page 28 M300V 2025 SM page 32 M300V 2530 SM and page 36 M300V 3035 SM CO2 contents other flue gas figures and complete the Certificate of Exemption section of the Benchmark Impo...

Page 62: ...our ignition attempts about four min utes the boiler does not function and a code that alternates between the letter E and the writing RESET appear on the LCD display it indicates that the safety lock out has stopped the boiler The display background flashes Fig 7 12 Fig 7 12 Press the reset key on the boiler control panel 14 Fig 7 10 to reset its functioning For the first lighting up and followin...

Page 63: ...nd the Service manual to the end user and explain how to use the unit in both C H and D H W modes Take the User step by step through the lighting instructions Show the User how to switch off the appliance quickly and indicate the position of the electric supply isolator Explain the proper use and adjustment of all system controls this will ensure the greatest possible fuel economy Explain the func...

Page 64: ...ars on the LCD display Fig 8 2 Fig 8 1 12 13 14 15 16 17 Fig 8 2 Scroll through the various menus by pressing the keys 13 back or 15 for ward until PAr Parameters menu ap pears on the LCD display Fig 8 3 Press the 14 key for 1 second to enter the selected menu Fig 8 3 Scroll through the various parameters by pressing the keys 13 back or 15 for ward until P57 which alternates with the parameter val...

Page 65: ...ler functioning without the probe connected If the boiler is EQUIPED with the remote control optional refer to Fig 8 8 In this case K setting must be done from the remote control Fig 8 8 External temperature C 20 20 15 10 5 0 5 10 15 20 25 30 40 50 60 70 80 Delivery temperature C K 6 K 4 K 3 K 2 K 1 5 K 1 K 0 5 The K coefficients is a parameter that in creases or reduces the boiler flow tempera tu...

Page 66: ...er value appears on the LCD dis play Fig 8 12 Fig 8 12 Press the 14 key for 1 second Fig 8 9 to enter the selected parameter The display will show the following Fig 8 13 Fig 8 13 Pressing the 13 or 15 keys it is possi ble to change the value of parameter 14 from a minimum of 00 to a maximum of 60 based on the selected curve of the K coefficient in Fig 8 8 the value shown on the display in Fig 8 14...

Page 67: ... 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 keys 15 and 16 for a K 1 5 is shown in Fig 8 16 8 3 Setting the pump post circula tion The pump in heating function is set for a post circulation of about one minute at the end of each heat request This time can be changed from a minimum of 10 seconds to a maximum of 20 minutes...

Page 68: ... next level Fig 8 22 Press the keys 13 and 15 simultaneously Fig 8 17 to exit the level without chang ing the value return to the previous level To exit the parameters menu wait 15 minutes without pressing any key switch off the electric power supply press the 13 and 15 keys simultaneously for 5 seconds Fig 8 17 return to previ ous level 8 4 Selecting the reignition fre quency When the boiler func...

Page 69: ...d until P10 which alternates with the parameter value appears on the LCD dis play Fig 8 26 Fig 8 26 Press the 14 key for 1 second Fig 8 23 to enter the selected parameter The dis play will show the following 6 60 sec onds Fig 8 27 Fig 8 27 It is possible to modify the value of pa rameter 10 from 1 10s to 120 1200s by pressing the 13 or 15 keys each unit in crease or decrease on the display corre s...

Page 70: ...t control device P05 Type of D H W flow control device P06 C H delivery maxi mum Temperature C P07 C H delivery minimum temperature C P08 C H maximum output P09 PARAMETER DIGIT VALUES C H re ignition fre quency 10 sec P10 Adjusting the minimum pump speed P11 Pump post circulation P12 Pump mode operation P13 Value of the external sensor K P14 Correct C H system pressure 10 bar P15 Maximum C H syste...

Page 71: ... Zone by remote 2 Alarm P38 External relay operat ing mode 2 0 OFF TA2 OFF 1 Zone heat 2 TA2 active 2 EVG ext TA2 Active 3 Anomaly TA2 Ac tive 4 Remote filling TA2 active P39 PARAMETER DIGIT VALUES Size shown on the dis play during operation 0 T CH or T DHW 1 only T CH 2 only T DHW 3 CH pres sure 4 T ext P40 Messages display 0 all 1 boiler status and errors 2 boiler status only P41 Not used P42 No...

Page 72: ...e 14 key for 1 second Fig 8 30 to enter the selected parameter The display will show the following 13 M300V 2025 SM 14 M300V 2530 SM or 15 M300V 3035 SM Fig 8 34 Fig 8 34 Press the keys 13 and 15 simultaneously Fig 8 30 to exit the level without chang ing the value return to the previous level Fig 8 33 Scroll the various parameters using keys 13 back or 15 forward until P02 which alternates with t...

Page 73: ...of D H W M300V 2025 SM M300V 2530 SM P25 01 D H W post heat ing mode at end of D H W M300V 3035 SM 02 To exit the parameters menu wait 15 minutes without pressing any key switch off the electric power supply press the 13 and 15 keys simultaneously for 5 seconds Fig 8 30 return to previ ous level Enter the CAF menu Automatic calibration and start calibration See instructions given in the Service ma...

Page 74: ...and that the appli ance is not powered Enter programming mode by pressing the 13 and 15 keys simultaneously for 5 seconds Fig 9 1 until HiS Boiler Histo ry appears on the LCD display Fig 9 2 Fig 9 1 12 13 14 15 16 17 Fig 9 2 Scroll through the various menus by pressing the keys 13 back or 15 for ward until PAr Parameters menu ap pears on the LCD display Fig 9 3 Press the 14 key for 1 second to ent...

Page 75: ...e LCD dis play Fig 9 8 Fig 9 8 For calibration see the instructions given in the Service manual section Gas valve Au tomatic calibration of the gas valve To exit the parameters menu wait 15 minutes without pressing any key switch off the electric power supply press the 13 and 15 keys simultaneously for 5 seconds Fig 9 1 return to previous level Apply the label indicating the type of gas and the pr...

Page 76: ...ng or dismantling boiler panels Other devices i e external con trols may lead dangerous volt age inside the appliance as well Ensure they are isolated In case of doubt turn off the gen eral system switch The Engineer should complete the Service Interval Record at the back of the manual 10 2 Programming the maintenance period Enter programming mode by pressing the 13 and 15 keys simultaneously for ...

Page 77: ...red The display will show the following Fig 10 6 for 5 seconds then move up to the next level Fig 10 6 To exit the parameters menu wait 15 minutes without pressing any key switch off the electric power supply press the 13 and 15 keys simultaneously for 5 seconds Fig 10 1 return to previ ous level 10 3 Dismantling the external panels Front panel Unscrew screws A and remove the front panel D by pull...

Page 78: ...e reverse order to that described on section Dismantling the external panels on page 77 Front panel Fit the front panel D in the reverse order to that described on section Dismantling the external panels on page 77 10 5 Emptying the D H W system Turn off the D C W inlet isolating valve 8 Fig 10 10 Fig 10 10 Close position 8 4 10 Turn on the hot water taps and any drain cocks 10 6 Emptying the C H ...

Page 79: ...the front panel and lower the controls panel see Dismantling the ex ternal panels on page 77 Disconnect the wiring of the ignition and detection electrodes Unscrew the connector K and remove the pipe L Disconnect the connector M by pulling it downwards Fig 10 13 Disconnect the fan connector N by pull ing it downwards Fig 10 13 Unscrew screws O and remove the fan burner unit 38 Fig 10 13 Extract th...

Page 80: ... the chamber door seal the appliance must undergo a full ana lytical combustion performance check Fig 10 15 If the condensate primary exchanger ele ments are dirty notable only after removing the burner body brush them using a bristle brush and remove the dirt using a suction device The burner does not require any particular maintenance just remove dust using a bris tle brush More specific mainten...

Page 81: ... the ambient thermostat is in the position call for heat Withdraw an abundant amount of D H W by opening the taps Activate the flue sweep function at maxi mum heating power see Setting the boiler flue sweep function on page 83 Check the combustion of the boiler using the outlets located on the flue tubes Fig 10 16 and compare the data measured with that following Fig 10 17 Model M300V 2025 SM Nomi...

Page 82: ...no solid deposits have formed if so remove them That the condensate drain piping is not clogged To clean the inside of the siphon remove it and turn it upside down to remove any dirt Fig 10 20 32 10 13 Visual inspection of appliance Visually inspect all water joints seals and connections for any evidence of leakage and retighten grease or replace them as necessary 10 14 Checking the gas supply pre...

Page 83: ...e LCD display Fig 10 23 Press the 14 key for 1 second to enter the selected menu Fig 10 23 Flue sweep function at minimum output in domestic hot water mode Press keys 13 and 15 Fig 10 21 at the same time until the LCD display displays the letters LP that alternate with the heat ing water temperature value e g 45 in dicating the activation of the flue sweep function at minimum output Fig 10 24 Fig ...

Page 84: ... with the heating water temperature value e g 60 the flue sweep function is at maximum output in domestic hot water mode Fig 10 27 Fig 10 27 Press keys 13 and 15 simultaneously Fig 10 21 for 1 second to exit chimney sweep mode and return to the menu list To exit the parameters menu wait 15 minutes without pressing any key switch off the electric power supply press the 13 and 15 keys simultaneously...

Page 85: ...y their responsibility to register with the manufacturer within the allotted time period It is essential that the boiler is serviced in line with the manufacturers recommendations at least annually This must be carried out by a competent Gas Safe registered engineer The service details should be recorded on the Benchmark Service and Interim Boiler Work Record and left with the householder Failure ...

Page 86: ...ers complete DHW mode gas rate m3 hr or ft3 hr Central heating output left at factory settings Yes No If no what is the maximum central heating output selected kW Dynamic gas inlet pressure mbar Central heating flow temperature C Central heating return temperature C System correctly balanced rebalanced Yes COMBINATION BOILERS ONLY Is the installation in a hard water area above 200ppm Yes No Water ...

Page 87: ...l service in accordance with the manufacturers instructions and BS 7593 It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non water facing component SERVICE INTERIM WORK ON BOILER delete as appropriate Date Engineer name Company name Telephone No Gas Safe registration No Max rate CO ppm CO CO CO Min rate CO ppm CO...

Page 88: ...l service in accordance with the manufacturers instructions and BS 7593 It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non water facing component SERVICE INTERIM WORK ON BOILER delete as appropriate Date Engineer name Company name Telephone No Gas Safe registration No Max rate CO ppm CO CO CO Min rate CO ppm CO...

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Page 90: ... 90 NOTES ...

Page 91: ......

Page 92: ...Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Sales Tel 01922 714600 Tech Service Tel 01922 714636 www biasi co uk 1796234640 17962 3464 0 4221 92A5 UK ...

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Biasi M300V.2025 SM, User Manual And Installation Instructions

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