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3 Technical specifications

Combi

Electrical diagram

Fig.5

Boiler electrical wiring diagram

Tab.15

Electrical connections

Power supply: L: Live
230V – 50 Hz N:

Neutral

: Earthing connector

CAN connection

Fan supply (FAN)

X10

Service interface

Gas valve (GV)

X17

Open Therm room unit (OT)

Pump power supply

X17

Outside sensor (T/OUT)

3-way valve motor power supply

X17

External tank sensor - accessory (T/DHW)

Earth connections

X15

Boiler stoppage (with open contact)

Sensors:

Limit thermostat (ST) Installation
return temperature (SRT) Installation
flow temperature (SFL) Flue gas
temperature (FS)

Room thermostat contact (230 V)

Sensors:

DHW flowmeter (HS) Heating circuit
pressure switch (SP) Pump PWM
signal (PWM PUMP)

Tab.16

Cable colour key

Black

Grey

Brown

Red

Blue (and light blue)

White

GNYE

Green/Yellow

Yellow

3.4

Содержание 430 Combi 2

Страница 1: ...bi LPG 2 These instructions include the Benchmark Commissioning Checklist and should be left with the user for safe keeping They must be read in conjunction with the Flue Installation Guide Installation and Service Manual High efficiency wall hung condensing gas boiler ...

Страница 2: ...using the product and keep it in a safe place for later reference In order to ensure continued safe and efficient operation we recommend that the product is serviced regularly Our service and customer service organisation can assist with this We hope you enjoy years of problem free operation with the product ...

Страница 3: ...ical data 13 3 2 1 Technical information 13 3 2 2 Features of the temperature sensors 16 3 3 Dimensions and connections 16 3 4 Electrical diagram 18 4 Description of the product 19 4 1 General description 19 4 2 Operating principle 19 4 2 1 Air gas adjustment 19 4 2 2 Combustion 19 4 2 3 Heating and domestic hot water production 19 4 2 4 Schematic diagram 20 4 3 MAIN COMPONENTS 20 4 4 Control pane...

Страница 4: ... 3 1 Connecting the flue chimney 38 6 4 Electrical connections 39 6 4 1 Accessing the electrical connections 40 6 4 2 Connecting the room thermostat 40 6 4 3 Service connection SERVICE 41 6 4 4 Connecting on wall outdoor sensor 41 6 4 5 Connecting the outside sensor 41 6 4 6 Identifying label 41 6 5 Filling the installation 42 6 5 1 Flushing the system 42 6 5 2 Fill the installation 42 6 5 3 Filli...

Страница 5: ...he flue gas discharge and the air supply 65 10 3 5 Checking the combustion 65 10 3 6 Checking the automatic air vent 65 10 3 7 Cleaning the siphon 65 10 3 9 Checking the burner and cleaning the heat exchanger 67 10 3 8 Electrode distances 65 10 3 10 Water unit 67 10 3 12 Removing limescale 67 10 4 Specific maintenance operations 68 10 4 1 Detection ignition electrode replacement 68 10 4 2 Dismantl...

Страница 6: ...leted by the installer The relevant section of Building Regulations only relates to dwellings Therefore the checklist only applies if the appliance is being installed in a dwelling or some related structure The flowchart opposite gives guidance for installers on the process neces sary to ensure compliance with Building Regulations 1 1 2 The Benchmark Scheme Fig 1 Benchmark AD 3000725 01 Benchmark ...

Страница 7: ...o manufacturer s instructions AD 3000696 01 If you notify via the Gas Safe Register the register will issue the Building Regulations certificate on members behalf Scheme Members only Call Gas Safe Register on 0800 408 5577 or log onto www gassaferegister co uk within 10 days Complete the Benchmark Checklist Gas Safe Register will issue a Building Regulations Compliance Certificate to the property ...

Страница 8: ...en without supervision Danger If you smell gas 1 Do not use a naked flame do not smoke do not operate elec trical contacts or switches doorbell light motor lift etc 2 Shut off gas supply 3 Open the windows 4 Trace possible leaks and seal them immediately 5 If the gas leak is before the gas meter contact the supplier 6 Telephone the National Gas Emergency Service on 0800 111 999 Danger If you smell...

Страница 9: ...ive gloves safety footwear etc Preparation Co ordinate movements know where and when you are both going Minimise the number of times needed to move the boiler plan ahead Always ensure when handling or lifting the route is clear and unobstruc ted If possible avoid steps wet or slippery surfaces unlit areas etc and take special care on ladders into lofts Technique When handling or lifting always use...

Страница 10: ...ay not be invoked in the following cases Failure to abide by the instructions on installing the appliance Failure to abide by the instructions on using the appliance Faulty or insufficient maintenance of the appliance 1 5 2 Installer s liability The installer is responsible for the installation and initial commissioning of the appliance The installer must observe the following instructions Read an...

Страница 11: ...this to improve user safety to prevent problems and to guarantee correct operation of the appliance Danger Risk of dangerous situations that may result in serious personal injury Danger of electric shock Risk of electric shock Warning Risk of dangerous situations that may result in minor personal injury Caution Risk of material damage Important Please note important information See Reference to ot...

Страница 12: ...tegory Gas type Supply pressure mbar I2H G20 H natural gas 20 II2H3P G31 Propane 37 Important This appliance is suitable for G20 gas containing up to 20 hydrogen H2 Due to variations in the percentage of H2 the percentage of O2 may vary over time For example 20 of H2 in the gas may lead to a 1 5 increase of O2 in the flue gases The gas valve may need to be adjusted more accurately This must be adj...

Страница 13: ...ms in buildings BS EN 12831 Heating systems in buildings Calculation of load BS EN 14336 Installation commissioning of water based heating systems BS 7074 Expansion vessels and ancillary equipment for sealed water systems BS 7593 Treatment of water in domestic hot water central heating systems 3 2 1 Technical information Important All data in these sections are nominal and subject to normal produc...

Страница 14: ...sumption AEC kWh 39 42 Water heating energy efficiency ƞwh 88 89 Daily fuel consumption Qfuel kWh 22 03 21 66 Annual fuel consumption AFC GJ 17 17 1 Low temperature means for condensing boilers 30 C for low temperature boilers 37 C and for other heaters 50 C return temperature at heater inlet 2 High temperature setting means 60 C return temperature at boiler inlet and 80 C flow temperature at boil...

Страница 15: ...r with a CV of 37 78 MJ m3 424 430 G20 gas consumption Qmax m3 h 2 61 3 17 G20 gas consumption Qmax with domestic hot water tank m3 h G20 gas consumption Qmin m3 h 0 52 0 63 G31 propane gas consumption Qmax kg h 1 92 2 33 G31 propane gas consumption Qmin kg h 0 38 0 47 Diameter of separate discharge pipes mm 80 80 80 80 Diameter of coaxial discharge pipes mm 60 100 60 100 Flue gas mass flow rate m...

Страница 16: ...060 5332 3608 2492 1754 1257 915 Tab 14 Flue gas temperature sensor NTC20K Beta 3970 20kOhm 25 C Temperature C 0 10 20 25 30 40 50 60 70 80 90 100 Resistance Ω 66050 40030 25030 20000 16090 10610 7166 4943 3478 2492 1816 1344 110 120 130 140 150 160 170 180 190 1009 768 592 461 364 290 233 189 155 3 3 Dimensions and connections Fig 3 Dimensions and connections BO 0000199 1 1 2 3 Safety valve Heati...

Страница 17: ...3 Technical specifications Combi 2 17 Fig 4 Paper template ...

Страница 18: ...tside sensor T OUT X5 3 way valve motor power supply X17 External tank sensor accessory T DHW X6 Earth connections X15 Boiler stoppage with open contact X7 Sensors Limit thermostat ST Installation return temperature SRT Installation flow temperature SFL Flue gas temperature FS RT Room thermostat contact 230 V X8 Sensors DHW flowmeter HS Heating circuit pressure switch SP Pump PWM signal PWM PUMP T...

Страница 19: ...he electric igniter triggers the mixture with a series of sparks that burn producing thermal energy 4 2 2 Combustion The burner heats the heating water circulating in the heat exchanger When the temperature of the combustion gas is lower than the dew point around 55 C the water vapour contained in the combustion gas condenses in the flue gas side of the heat exchanger The heat recovered during thi...

Страница 20: ...gas assembly Control board and mixer valve 9 Heating return sensor 10 Gas valve 11 Heating system and pump venting valve 12 Pump 13 Cable gland 14 Control panel with boiler PCB and display 15 Domestic hot water plate heat exchanger fastening screws 16 Domestic hot water priority sensor 17 Domestic hot water plate heat exchanger 18 Siphon 19 Hydraulic safety valve 3 bar 20 Hydraulic pressure gauge ...

Страница 21: ...g 9 Display screen Icons Chimney sweep mode is enabled forced full load or low load for CO2 measurement The burner is on Display of the system water pressure DHW operation is enabled CH operation is enabled Information menu read out various current values User menu user level parameters can be configured Installer menu installer level parameter can be configured Error menu errors can be read out C...

Страница 22: ...are tak en into consideration Do not use pipes of a smaller diameter than the boil er gas connection 22mm UNLESS the stated gas rate can be achieved with pipe of lesser diameter and with all other gas appliances operating at maximum rate 5 2 2 Electrical supply External wiring must be correctly earthed polarised and in accordance with relevant regulations rules In GB this is the current IEE Wiring...

Страница 23: ...4 Bypass The boiler utilises the primary side of the DHW plate heat exchanger as an automatic integral bypass 5 2 5 System control Further external controls e g room thermostat sensors MUST be fitted to optimise the economical operation of the boiler in accordance with Part L of the Building Regulations A range of optional controls is available Full details are contained in the relevant Sales Lite...

Страница 24: ...and towards the wall See BS 6798 for full details The pressure relief valve is set at 3 bar therefore all pipework fittings etc should be suitable for pressures in excess of 3 bar and temperature in ex cess of 100 C The pressure relief discharge pipe should be not less than 15mm diame ter run continuously downward and discharge outside the building pref erably over a drain It should be routed in s...

Страница 25: ...ng pump that is suitable for use on any type of one or two pipe heating system The automatic air vent valve built into the pump body enables fast venting of the heating system Operation of the pump in DHW mode 100 fixed Operation of the pump in heating mode modulating by 85 to 100 Important The relief valve must never be used to drain the system A remote relief valve kit is available to enable the...

Страница 26: ...current edition of IS 813 Domestic Gas Installations and the current ETCI rules It is not necessary to protect any surface the boiler is mounted on from heat generated during normal operation unless required by local authority regulations If the boiler is to be fitted into a building of timber frame construction then reference must be made to the current edition of Institute of Gas Engineers Publi...

Страница 27: ...surrounding surface Cut end at 45 Holes in the soak away must face away from the building 500mm minimum Basement or similar heated Condensate pump Unheated Location e g Garage Tab 18 Examples are shown of the following methods of termination 7 7 8 PN 0000389 D 9 3 Key Description A Termination to an internal soil and vent pipe B External termination via internal discharge branch e g sink waste dow...

Страница 28: ...tems The pipe should be a minimum of 21 5mm diameter and must be supported using suitably spaced clips of the correct design to prevent sagging It is advisable that the full length of condensate pipe is run internally andpreferably be less than 3 metres Internal runs greater than 3 metres or runs in cold areas should use 32mmwaste pipe External runs MUST be a MINIMUM of 32mm and fully insulated wi...

Страница 29: ...es indicate the general requirements for siting bal anced flue terminals For GB recommendations are given in BS 5440 Pt 1 For IE recommendations are given in the current edition of I S 813 Domestic Gas Installations Important Due to the nature of the boiler a plume of water vapour will be discharged from the flue This should be taken into account when siting the flue terminal Tab 19 Terminal posit...

Страница 30: ... of accommodating a built in element such as a window frame 2 Only ONE 25mm clearance is allowed per installation If one of the dimension D E F G or H is 25mm then the remainder MUST be as shown in brackets in accordance with BS 5440 1 Important Under car ports we recommend the use of the plume displacement kit The terminal position must ensure the safe and nuisance free dispersal of combustion pr...

Страница 31: ...rmination ap plications It allows for lengths between 315mm and 500mm from elbow to terminal without the need for cutting Extensions of 250mm 500mm and 1m are available All fittings should be fully engaged The approximate engagement is 40mm Apply the lubricant supplied to the seal on each fitting to aid assembly Tab 20 Maximum permissible equivalent flue lengths are Horizontal concentric 60 100 Di...

Страница 32: ...odel number The flue terminal guard should be positioned centrally over the terminal and fixed as illustrated 5 4 10 Flue chimney deflector 1 Flue deflector Push the flue deflector over the terminal end It may point upwards as shown or up to 45 either way from vertical Secure the deflector to the terminal with screws provided 5 4 11 Flue chimney accessories See For full details of Flue Accessories...

Страница 33: ... I2H Gas category used depends on the country of use CN1 CN2 Factory parameters s n Serial number Tab 23 Service label description Code Product code Product name Model name s n Serial number 5 5 Transport Transport the packaged appliance horizontally using a suitable cart The boiler may be transported vertically using a two wheel cart only for short distances Warning Moving the boiler is a job for...

Страница 34: ...the boiler See Handling page 9 before unpacking or lifting the boiler To unpack the boiler 1 Remove the banding and the cardboard sleeve 2 Remove the polystyrene top piece and installation kit 3 Snap off the rear part of the polystyrene bottom piece Important Polystyrene base should be removed completely if fitting the boiler into a space with minimum side clearances of 5 mm each side Important If...

Страница 35: ... B Central heating return C Stop valve D Double check valve Not supplied E Loop Temporary or Permanent A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement refilling The filling method adopted must be in accordance with all relevant water supply regulations and use approved e...

Страница 36: ... vessel is recommended Important In instances where the mains water supply incorporates a non return backflow prevention device or any other device that includes one it is possible for a build up of pressure to occur This may result in damage to the boiler and other appliances To prevent damage to the boiler it is strongly recommended that a suitable mini expansion vessel is fitted on the mains wa...

Страница 37: ...bow to the DHW flow outlet 7 Using the sealing washers provided connect the taps and elbow to the boiler 8 Ensure all joints are tight Important Connect the pressure relief discharge pipe first before any otherpipework 6 2 1 Fitting the pressure relief discharge pipe Warning Some residual water may escape when removing the sealing caps Take precautions to avoid damage to components 1 Remove the di...

Страница 38: ...mension X 2 Measure the distance from the outside wall face to the elbow This dimension will be known as X 3 If the distance from the flue elbow to the outside face of the wall is less than 250mm the connection assembly can be discarded and the terminal assembly fitted directly into the elbow 4 In instances where the dimension X is between 250mm and 315mm it will be necessary to shorten the termin...

Страница 39: ...type Ensure flue is fully engaged into elbow Apply the lubricant supplied for ease of assembly do not use any other type Ensure elbow is fully engaged into boiler adaptor Peak to be uppermost PN 0000465 9 Draw the flue back through the wall and engage it in the elbow It may be necessary to lubricate to ease assembly of the elbow and flue 10 Ensure that the terminal is positioned with the slots to ...

Страница 40: ...ameter for the cable gland then cut the corresponding plug 2 as shown in the figure and feed the wire into the hole Connect the wire then secure the cable gland in place by tightening the screw 1 The supply cable is connected to the terminal board as shown in the figure below L 230 V brown wire N Neutral blue cable Earth connection Fig 41 Connecting the room thermostat RT 6 4 2 Connecting the room...

Страница 41: ...is recommended the sensor is a low voltage device This wiring is NOT supplied in the kit X PN 0000626 4 If it is not possible to pass the wiring through the wall directly behind remove the circular knock out panel in the sensor base to allow connection 5 Using the screws provided fit the body to the wall Insert the wires in the two way terminal block and secure them Replace the sensor cover 6 Ensu...

Страница 42: ...fully open the second tap Note The system pressure is shown at all times on the pressure gauge and can be viewed on the display when there is power to the boil er 2 When the figures on the display or needle on the pressure gauge in dicate between 1 and 1 5 bar turn both taps off 3 Disconnect the filling pipe from the taps a small amount of water may be present and remove it Keep the pipe in a safe...

Страница 43: ... components 8 Check the ventilation in the room in which the system is installed 9 Check the flue gas connections Proceed as described below to commission the boiler Open the main gas cock Open the gas cock on the boiler Open the front panel as described in the chapter entitled Accessing the boiler electrical connection board Check the gas supply pressure at the pressure socket on the gas valve Ch...

Страница 44: ...cifications Fig 48 Type of fittings flue gas measuring point 7 4 2 Combustion parameters The boiler has two dedicated sockets in order to measure the combustion efficiency and cleanliness of the combustion exhaust gases during operation One socket is connected to the flue gas exhaust circuit A which is used to detect the cleanliness of the combustion exhaust gases and the combustion efficiency The...

Страница 45: ... LOW TEMPERATURE systems such as underfloor heating the flow temperature is limited by setting CP000 maximum flow temperature Caution Remember to return the setting to GP082 0 once the chimney sweep function is no longer in use Caution To analyse the products of combustion ensure adequate heat exchange in the system in heating mode or in domestic water mode by opening one or more domestic hot wate...

Страница 46: ...efer to the value of O2 Important This appliance is suitable for G20 gas containing up to 20 hydrogen H2 Due to variations in the percentage of H2 the percentage of O2 may vary over time For example 20 of H2 in the gas may lead to a 1 5 increase of O2 in the flue gases The gas valve may need to be adjusted more accurately This must be adjusted using standard O2 values for the gas used ...

Страница 47: ...crease it Baxi Combi 424 430 CO2 maximum 8 8 to 9 4 Values for G20 gas type only For G20 20 H2 calibration of the gas valve refer to O2 Calibration of the REDUCED heat input Check that the measurement in the exhaust pipe with the boiler operating at minimum heat input is as indicated in the table entitled Service settings If incorrect Remove the Offset setting screw plug K using the Torx driver Th...

Страница 48: ...7 Commissioning 48 Combi 2 Fig 54 Combustion procedure ...

Страница 49: ...ete a Declaration of Conformity to indicate compliance with I S 813 An example of this is given in I S 813 Domestic Gas Installations This is in addition to the Benchmark Commissioning Checklist 5 Set the central heating and hot water temperatures to the requirements of the user Instruct the user in the operation of the boiler andsystem 6 Instruct the user in the operation of the boiler controls 7...

Страница 50: ... the knob until AD is displayed 3 Turn the knob to scroll through the values Fig 59 Scrolling through the values 1 To activate the control unit press any button 2 To access the settings available from the menu press the key Tab 25 Available menu options 4 Press the key to confirm selection of the required menu 5 Turn the knob to scroll through the list of settings Press the 6 Turn the knob to modi...

Страница 51: ...tivate a heating request the room thermostat must be set to a temperature above the current temperature or open a domestic water tap 8 2 2 Changing the heating flow temperature 1 Use the knob to adjust the flow temperature in heating mode Turn the knob anti clockwise to reduce the temperature value Turn the knob clockwise to increase the temperature value Important With an outside sensor connected...

Страница 52: ...t protection It is a good idea to prevent the heating installation from draining completely as changing the water can result in unnecessary and damaging limescale deposits from forming inside the boiler and heating elements If the thermal installation is not intended to be used during the winter months and there is a risk of frost we recommend mixing suitable antifreeze solutions designed for a sp...

Страница 53: ...mestic hot water and antifreeze disabled error code H02 10 2 Contact open Heating domestic hot water disabled error code H02 09 3 Contact open Heating domestic hot water and antifreeze disabled error code E02 13 with reset request 2 Installer AP002 Manual heating request enabled based on implementation of setting AP026 0 Disabled 1 Enabled 0 Installer AP006 Notification of low pressure in the heat...

Страница 54: ... External temperature C below that at which anti frost protection is activated 10 30 25 Installer AP082 Not used 0 Installer AP091 Type of outdoor sensor used 0 Auto 1 Wired sensor 2 Wireless sensor 3 Internet measured 4 None 0 Installer AP098 Configuration of boiler blocking input contact X15 al so see setting AP001 0 Normally open 1 Normally closed 1 0 1 Installer AP101 Type of degassing 0 Disab...

Страница 55: ...0 DHW Domestic Hot Water sensor 1 DHW Domestic Hot Water thermostat 1 Installer DP160 Temperature setpoint of the anti legionella function C 65 60 90 Installer DP200 DHW mode 0 Domestic hot water programming only available with Room Unit 1 Manual boiler with calorifier tank Preheating active instantaneous boiler 2 Antifreeze boiler with calorifier tank No preheating instantaneous boiler 2 User DP4...

Страница 56: ...21 5 30 User CP084 Temperature C set by EVENING activity in the zone 22 5 30 User CP085 Temperature C set by CUSTOM activity in the zone 20 5 30 User CP200 Required ambient temperature C for the zone in manual mode 20 5 30 User CP220 Reduced mode heating curve offset with outside sensor 15 15 90 Installer CP240 Adjust the effect of the room unit compared to the outside sensor 3 0 10 Installer CP25...

Страница 57: ... Open Therm type room unit to the O T port on the connection board Important An ON OFF room thermostat also H V 230V can be connected to the RT connector On the OT connector it is possible to connect a low voltage or Open therm Rbus room thermostat To use a H V thermostat remove the link between RT connector and maintain the link on the OT connector If you want to use an OT thermostat remove the l...

Страница 58: ...atSetpoint 0 Tout temperature detected by the outside sensor C SP_CH Heating flow temperature setpoint C Tout C CP200 20 CP210 15 PreheatSetpoint 0 BO 0000232 9 4 Reading out measured values Fig 65 INFO menu access Proceed as described below to access the info menu Setting read only Description Value AM001 DHW Domestic Hot Water mode enabled 0 Disabled 1 Enabled 0 1 AM010 Pump speed 0 100 AM011 Se...

Страница 59: ...Flame detected 0 Not detected 1 Detected 0 1 GM004 Gas valve 0 Open 1 Closed 2 Off 0 1 2 GM007 Start up 0 Off 1 On 0 1 GM008 Actual flame current measured μA GM012 Contact release signal X16 0 No 1 Yes 0 1 GM013 Boiler shutdown signal input 0 Open 1 Closed 0 1 GM044 Reason for shutdown checked 0 None 1 Heating Stoppage 2 DHW Stoppage 3 Awaiting burner ignition 4 Heating flow temperature above maxi...

Страница 60: ...19 Tab 30 List of sub statuses SUB STATUS Standby 0 Wait time until next ignition in heating mode 1 Pre ventilation 13 Burner ignition signal sent to safety core 15 Burner pre ignition 17 Burner ignition 18 Flame check 19 Fan operation during ignition attempts 20 Operation at set temperature setpoint 30 Operation at limited temperature setpoint 31 Operation at required output 32 Level 1 gradient d...

Страница 61: ... used by domestic hot water DHW DC002 Installer Number of domestic hot water cycles three way valve switching DC003 Installer Number of hours in domestic hot water mode three way valve switching DC004 Installer Number of burner start ups for domestic hot water mode DC005 Installer Number of burner start up hours for domestic hot water mode GC007 User Failed start up attempts PC001 Installer Indica...

Страница 62: ... following must be checked The integrity of the complete flue system and the flue seals by checking air inlet sample to eliminate the possibility of recirculation O2 20 6 CO2 0 2 The integrity of the boiler combustion circuit and relevant seals The operational gas inlet pressure and the gas rate The combustion performance as described in Check the Combustion Performance below Competence to carry o...

Страница 63: ...he boiler was first supplied with electric power irrespective of the number of times the burner has been switched on and off 4 Enter the number of burner start up hours using the AP009 parameter 10 2 1 Service notification When the boiler needs to be serviced a request message appears on the display Use the automatic assistance notification for preventative maintenance to reduce interruptions to a...

Страница 64: ...cing if necessary Look for any evidence of leaks or corrosion and if found determine and rectify the cause 4 Complete the relevant Service Interval Record section of the Bench mark Commissioning Checklist at the rear of this publication and then hand it back to the user 10 3 2 Checking the water pressure In order for the boiler to operate correctly the pressure of the water in the heating circuit ...

Страница 65: ...n the flue gas using the measuring equipment Compare this with the control value 10 3 6 Checking the automatic air vent Check that the boiler pump venting valve is working In the event of a leak replace the valve Fig 71 Dismantling the siphon 3 10 3 7 Cleaning the siphon The front panel must be removed to extract the siphon A Proceed as described below Lower the panel 1 Remove the clip 2 Unfasten ...

Страница 66: ...e dust residue Vacuum up any residue 17 It is forbidden to clean the combustion chamber with any unauthorised chemical products and in particular ammonia hydrochloric acid sodium hydroxide caustic soda etc 18 Generously wet the surfaces to be cleaned using a manual sprayer containing a solution of water and vinegar Do not use it on excessively hot surfaces max 40 C Wait approx 7 8 minutes then bru...

Страница 67: ...orce 6 Remove any impurities and deposits from the filter 7 Check the filter and replace if necessary 8 Fit the filter back inside the cartridge and reinsert it into its seat 9 Fit the hall sensor 1 10 3 12 Removing limescale The domestic water circuit can be cleaned after removing the water water heat exchanger from its seat by unscrewing the two front screws A For the cleaning operations you mus...

Страница 68: ...raining the heating circuit Fig 79 Removing the screws Fig 80 Remove flow and return sensors 10 4 2 Dismantling the water water exchanger The stainless steel plate water water heat exchanger can be easily removed as described below 1 Disconnect the power supply to the boiler 2 Close the gas cock 3 Close the heating system return and flow cocks 4 Drain the system if possible only the boiler using t...

Страница 69: ... follows 1 Disconnect the power supply to the boiler 2 Close the gas cock 3 Cut off the gas supply to the boiler 4 Close the heating system return and flow cocks 5 Drain the system if possible only the boiler using the specific drain cock 6 Empty the water from the domestic water circuit by opening a user cock 7 Disconnect any piping connections 8 Remove the pressure sensor as per 10 4 6 9 Remove ...

Страница 70: ...arge pipe from the valve and remove the seal ing grommet 8 Using a suitable hexagon key undo the grub screw sufficiently tore lease the valve 9 Note the orientation of the valve rotate it and withdraw it from the manifold 10 Fit the new valve and O ring seal and set to the previously noted orientation Tighten the grub screw 11 Reconnect the discharge pipe ensuring the sealing grommet is in place t...

Страница 71: ...expansion vessel proceed as detailed below 1 Disconnect the power supply to the boiler 2 Close the gas cock 3 Close the main domestic water tap 4 Close the heating system return and flow cocks 5 Open the boiler drain cock The expansion vessel is inside the boiler on the side to the right Fig 88 Modifying the parameters 10 4 12 Replacing the PCB After replacing the main board power up the boiler el...

Страница 72: ...for one second If faults are shown frequently contact our authorised technical assistance centre E Stoppage reset required Tab 32 List of temporary faults DISPLAY DESCRIPTION OF TEMPORARY FAULTS CAUSE Check Solution An installer is required for most checks and solu tions Group code Specific code H 00 42 Pressure sensor open faulty SENSOR CONNECTION PROBLEM Check the operation of the pressure senso...

Страница 73: ...r PCB ty pe Contact the Service Network H 02 07 Low pressure in heating circuit water filling required Check the installation pressure and restore Check the expansion vessel pressure Check for boiler installation leaks H 02 09 Partial stoppage of the boiler antifreeze function acti ve SIGNAL INDICATING BLOCKING INPUT Contact X15 open check connected devices Parameter configuration error Check AP00...

Страница 74: ...ss detected five times in 24 hours GAS SUPPLY Check the gas supply pressure Check the gas valve calibration ELECTRODE PROBLEM Check the electrode connection and wiring Check the condition of the electrode FLUE GAS PIPES Check the air intake and flue gas exhaust pipes EXCHANGER ON FLUE GAS SIDE BLOCKED Check the cleanliness of the exchanger MAINS VOLTAGE Check the power supply voltage E 01 12 Tempe...

Страница 75: ...al degassing function Check that the pump is working Check the circulation in the boiler installation OTHER POSSIBLE CAUSES Check the safety thermostat connection Check that the safety thermostat is working correctly E 04 10 Burner failed to ignite after 4 attempts GAS SUPPLY Check the gas supply pressure Check the gas valve electrical connection Check the gas valve calibration Check the operation...

Страница 76: ...t function parameter AD Check the devices connected to contact X9 A 02 37 Passive functional device disconnected COMMUNICATION FAULT Start the auto detect function parameter AD Check the devices connected to contact X9 A 02 45 Connection error COMMUNICATION FAULT Start the auto detect function parameter AD A 02 46 Device priority error COMMUNICATION FAULT Start the auto detect function parameter A...

Страница 77: ...s follows to disassemble the boiler 1 Switch off the boiler 2 Disconnect the power supply to the boiler 3 Close the gas valve to the boiler 4 Close the inlet cock for domestic cold water in the boiler 5 Tap domestic water by opening a cock to relieve pressure from the domestic water circuit 6 Drain the heating installation 7 Remove the pipe connecting the boiler to the chimney and close the connec...

Страница 78: ... 90 Cutting the power supply MW 0000149 1 The appliance is composed of multiple components made from various different materials such as steel copper plastic fibreglass aluminium rubber etc These materials may be highly pollutant This means that the boiler must be disposed of correctly by contacting staff at the nominated disposal facility or by taking it to a centre that is authorised to dispose ...

Страница 79: ...d 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 to comply with the manufacturers servicing instructions and requirements will invalidate the warranty www hhic co uk This Commissio...

Страница 80: ...e 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 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 scale reducer softener pre existing Fitted N...

Страница 81: ...ceptable 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 CO CO undertaken in accordance with manufacturers instructions and readings are corr...

Страница 82: ...ceptable 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 CO CO undertaken in accordance with manufacturers instructions and readings are corr...

Страница 83: ...chnological information contained in these technical instructions as well as any drawings and technical descriptions supplied remain our property and shall not be multiplied without our prior consent in writing Subject to alterations ...

Страница 84: ...ions visit www baxi co uk terms Failure to adhere to terms and conditions will void your manufacturer s warranty Baxi Brooks House Coventry Road Warwick CV34 4LL Please ensure the boiler is installed in accordance with these installation instructions and that you adhere to the Building Regulations e oe All descriptions and illustrations provided in this document have been carefully prepared but we...

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