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7.2.4

Working clearances...........................................................54

7.3

Installation diagram..........................................................55

7.4

Water connections............................................................ 56

7.4.1

Unvented water connections.............................................. 56

7.4.2

Vented water connections.................................................. 57

7.5

Gas connection.................................................................58

7.6

Venting system................................................................ 58

7.6.1

C13/C33 concentric systems.............................................. 60

7.6.2

C13/C33 parallel systems.................................................. 62

7.6.3

C43/C53/C63 systems.......................................................64

7.7

Electrical connections........................................................ 65

7.7.1

Preparation......................................................................65

7.7.2

Mains power.................................................................... 66

7.7.3

Optional electrical connections............................................66

7.8

Commissioning.................................................................67

7.8.1

Filling..............................................................................67

7.8.2

Procedure for checking the supply pressure..........................68

7.8.3

Procedure for checking the gas control valve pressure........... 70

7.8.4

adjustment............................................................... 71

7.8.5

Switching pressure measurement....................................... 73

7.8.6

Turn on the water heater...................................................74

7.9

Decommisioning...............................................................74

7.9.1

Turn off the water heater...................................................74

7.9.2

Draining.......................................................................... 74

Conversion of gas type.............................................................. 77

Settings.....................................................................................79
9.1

Operator interface............................................................ 79

9.2

Service program...............................................................79

9.2.1

Hysteresis....................................................................... 79

9.2.2

Display the error history.................................................... 80

9.2.3

Display the water heater history......................................... 80

9.2.4

Display the selected water heater....................................... 81

9.2.5

Switch the pump on or off................................................. 81

9.2.6

Setting the service interval................................................ 81

9.2.7

Service mode...................................................................82

9.2.8

Setting legionella prevention.............................................. 83

9.2.9

Setting the central heating configuration..............................83

Maintenance.............................................................................. 85

0311704_BFC_28-120_III_

ENEN_V2.4, 2022-10-17

Содержание BFC Cyclone 28

Страница 1: ...0311704 R2 4 BFC Cyclone High Efficient Condensing Water Heater BFC 28 30 50 60 80 100 120 Installation User and Service Manual 4222 EN...

Страница 2: ...7 B8 Armstong Mall Southwood Business Park Farnborough Hampshire GU14 ONR UK T 0870 267 6484 sales aosmith co uk www aosmith co uk A O Smith Europe De Run 5305 PO Box 70 5500 AB Veldhoven The Netherla...

Страница 3: ...than in accordance with the General Conditions registered at the Chamber of Commerce For more information refer to the General Conditions These are available on request free of charge We believe that...

Страница 4: ...boilers of rated inputs between 70 kW net and 1 8 MW net 2nd and 3rd family gases BS 6700 Design installation testing and maintenance of services supplying water for domestic use within buildings and...

Страница 5: ...70 5500 AB Veldhoven The Netherlands Telephone 0870 AOSMITH free 0870 267 64 84 General 31 40 294 25 00 Fax 31 40 294 25 39 E mail info aosmith nl Website www aosmith co uk In the event of problems wi...

Страница 6: ...6...

Страница 7: ...bes the correct installation and maintenance procedures Target group The information in this manual applies to three target groups users installation engineers service and maintenance engineers The Us...

Страница 8: ...ed special attention Note A note gives more information on a topic Caution Obey the caution instructions to prevent damage of the water heater Warning Obey the warning instructions to prevent danger o...

Страница 9: ...ification 8 User part 13 1 Introduction 15 2 Safety 17 3 Interface 19 3 1 Operator interface 19 3 2 Explanation of icons 19 3 3 Control switch 20 3 4 Buttons 20 3 5 PC connection 20 3 6 Status of the...

Страница 10: ...to a week program 34 4 3 8 Deleting times from a week program 35 4 3 9 Extra period 36 4 3 10 Settings 38 Installation Maintenance and Service part 41 5 Introduction 43 5 1 About the water heater 43...

Страница 11: ...edure for checking the gas control valve pressure 70 7 8 4 CO2 adjustment 71 7 8 5 Switching pressure measurement 73 7 8 6 Turn on the water heater 74 7 9 Decommisioning 74 7 9 1 Turn off the water he...

Страница 12: ...exchanger 87 10 4 Finalization 88 11 Troubleshooting 89 11 1 Errors and warnings 89 11 1 1 General errors 90 11 1 2 Displayed errors 91 11 1 3 Warnings 96 12 Appendices 97 12 1 Technical details 97 1...

Страница 13: ...User part 0311704_BFC_28 120_III_ENEN_V2 4 2022 10 17 13...

Страница 14: ...14...

Страница 15: ...rough the water inlet 1 The heated water leaves the tank at the top through the hot water outlet 2 To operate the water heater the operator interface 3 and control switch 4 are used Fig BFC water heat...

Страница 16: ...16 User part...

Страница 17: ...r Some propellants bleaching agents and degreasing agents etc disperse of explosive vapors and or cause accelerated corrosion If the water heater is used in a room where such substances are stored or...

Страница 18: ...18 User part...

Страница 19: ...nu see section 4 3 The service program see section 9 2 This chapter is specifically intended for the service and maintenance engineer and installation engineer In this manual the display of the operat...

Страница 20: ...tion 4 3 The buttons are Buttons for UP and DOWN Enter ENTER Reset button RESET The arrows and indicate that you can scroll up and or down Use and to scroll The cursor points to the option to be activ...

Страница 21: ...y with the following information line one the text ON line two the time the day and T1 see section 4 1 1 line three the programmed water temperature Tset line four is empty when the water heater is id...

Страница 22: ...ne three the next scheduled switch on time line four displays the text PERIOD ACTIVATED In all modes the temperature may at any moment drop below the desired temperature The water heater then enters a...

Страница 23: ...vice interval has been incorrectly selected contact the service and maintenance engineer for instructions on how to rectify this Information on the frequency of maintenance is provided elsewhere in th...

Страница 24: ...24 User part...

Страница 25: ...The appliance is now in ON mode If there is a heat demand the appliance will run through the heating cycle see section 4 1 1 If the heating cycle is not run there is no heat demand if this is the case...

Страница 26: ...d are dimmed The icon is activated After a number of seconds pre glow the gas control valve is opened and ignition takes place The icon is activated The message IGNITION appears After ignition the fla...

Страница 27: ...llows Press to select the main menu Using and place the cursor beside OFF Confirm with ENTER The frost protection cuts in when the water temperature drops below 5 C The text FROST will then appear on...

Страница 28: ...ition 0 using the control switch on the operator interface Isolate the water heater from the power supply by setting the isolator between the water heater and the mains power supply to position 0 Note...

Страница 29: ...e language and the time see section 4 3 10 You can also use this option to display the regulation interval temperature and the ignition and working speeds of the fan Note If you fail to make any selec...

Страница 30: ...ent excessively frequent switching on and off there is a heating margin The standard setting for this margin is 5 C The appliance starts heating up if the water temperature is 5 C below the SETPOINT W...

Страница 31: ...with ENTER A week program can be shut down simply by activating a different operating mode for example the ON mode 4 3 6 Changing the appliance s standard week program Note First fill in the desired...

Страница 32: ...cursor to SU Confirm with ENTER The day indicated by blinks Use and to set the desired day In the example this is SU Sunday Confirm with ENTER The cursor moves to the hour digits which will blink Use...

Страница 33: ...ram controlled pump If required a pump can be controlled during the period Use and to set PUMP ON The pump ensures a regular circulation of hot water in the hot water pipes You can skip this step if y...

Страница 34: ...example we will program an extra period in which the switch on time is set to 18 00 and the corresponding switch off time to 22 00 The water temperature will be set to 75 C and the pump will run cont...

Страница 35: ...rm with ENTER Scroll with to PROGRAM OVERVIEW Confirm with ENTER The display shows the menu for the week program Scroll with to DELETE Confirm with ENTER To warn you that you are now working in the de...

Страница 36: ...thout modifying the active week program or without taking the water heater out of OFF mode frost protection active If the water heater is running under an extra period then this is indicated in the di...

Страница 37: ...off period Setting the switch off time Use and to set the hours In the example this is 012 Confirm with ENTER The cursor moves to the minute digits which will blink Use and to set the minutes In the...

Страница 38: ...ent day of week and time Displayable water heater specifications this category is only relevant to the installation engineer and or service and maintenance engineer Regulation interval water temperatu...

Страница 39: ...e cursor moves to the hour digits which will blink Scroll with and to the current hour for example 15 Confirm with ENTER The cursor moves to the minute digits which will blink Scroll with and to the n...

Страница 40: ...INGS Confirm with ENTER Scroll with to SPECIFICATIONS Confirm with ENTER The display shows the sub menu for displaying water heater specifications Scroll with to the section to be displayed for exampl...

Страница 41: ...Installation Maintenance and Service part 0311704_BFC_28 120_III_ENEN_V2 4 2022 10 17 41...

Страница 42: ...42 User part...

Страница 43: ...e venturi 30 on the intake side of the fan The 1 1 gas to air ratio always guarantees the most efficient gas air mixture In this water heater the cold water enters the bottom of the tank through the c...

Страница 44: ...ntroller 5 Pressure switch 6 Control panel 7 Temperature sensor T1 8 Combustion chamber 9 Anode 10 Tank 11 Heat exchanger 12 Inspection and cleaning opening 13 Temperature sensor T2 14 Cold water inle...

Страница 45: ...as is mixed with the air in the venturi 30 This mixture is ignited by the hot surface igniter 20 and the water becomes heated As soon as the water temperature approaches Tset the fan rpm drops to the...

Страница 46: ...46 Installation Maintenance and Service part...

Страница 47: ...d the flue gas discharge components Make sure that the venting system does not exceed the maximum number of 45 and 90 bends and the maximum pipe length Caution Make sure that the diameter and length o...

Страница 48: ...The water heater has some safety instructions on its cover The text Read the installation instructions before installing the appliance The text Read the user instructions before putting the appliance...

Страница 49: ...rner As a safety measure the gas control valve has two valves Both valves shut off the gas supply 6 3 1 3 Fan The fan 18 provides an optimum air supply when there is a heat demand As a safety feature...

Страница 50: ...installation With a vented installation excess pressure is taken up by the open cold water head tank The level of the cold water head tank determines the maximum working pressure in the tank refer to...

Страница 51: ...you must obey local legislation related to waste disposal Never discard your old device together with regular waste Put the device into a municipal waste collection depot for electrical and electroni...

Страница 52: ...52 Installation Maintenance and Service part...

Страница 53: ...ly to prevent damage to the water heater 7 2 Conditions The water heater is suitable for room sealed and for open combustion For room sealed combustion the air inlet does not depend on the installatio...

Страница 54: ...igure AA around the water heater s control column and cleaning openings 100 cm BB all sides of the water heater 50 cm Top of the water heater 100 cm Fig Working clearances BFC 28 60 Fig Working cleara...

Страница 55: ...5 Non return valve mandatory 6 Circulation pump optional 9 Drain valve 10 Manual gas valve mandatory 11 Service stop valve 12 Temperature gauge optional 13 Condensate drain 14 Draw off points 15 Expa...

Страница 56: ...pansion vessel 16 Fit an expansion valve 15 and connect the overflow side to an open waste water pipe 7 4 1 2 Hot water side See B in the installation diagram see section 7 3 Note Insulating long hot...

Страница 57: ...mperature of the tap water Fit a stop valve 4 in the hot water outlet pipe for servicing If a circulation pipe is required continue by installing the circulation pipe see section 7 4 1 3 7 4 2 3 Circu...

Страница 58: ...horizontal air inlet and flue gas outlet in same pressure zone C33 Closed Concentric and or parallel venting system with vertical air inlet and flue gas outlet in same pressure zone C43 Closed Water...

Страница 59: ...Fig Venting systems 0311704_BFC_28 120_III_ENEN_V2 4 2022 10 17 59...

Страница 60: ...m 130 mm Diameter air inlet 150 mm 200 mm Description parts A O Smith Part number A O Smith Part number Wall terminal set A wall terminal 1 a 500 mm concentric pipe and a 90 bend 0302504 0311465 Wall...

Страница 61: ...to the table for the correct pipe dimensions of the C13 and C33 concentric systems Description Unit BFC 28 60 BFC 80 120 Diameter flue discharge air inlet mm mm 100 150 130 200 Maximum length m 40 15...

Страница 62: ...6 mm 130 0 6 0 6 mm Diameter air inlet Description parts A O Smith Part number A O Smith Part number Wall terminal 1 0302505 0302313 Roof terminal 2 0311463 0306390 Adapter box concentric to parallel...

Страница 63: ...e default diameter of 130 mm is insufficient diameter 150 mm should be used Any diameter enlargement must be carried out on both air inlet and flue gas outlet Caution Always make sure the installation...

Страница 64: ...pipe dimensions of the C43 C53 and C63 concentric systems Description BFC 28 60 BFC 80 120 Manufacture venting material Muelink Grol Muelink Grol Construction Concentric Concentric Material flue gas...

Страница 65: ...Fig Terminal block A Screws B Cover C Terminal block 7 7 1 Preparation In preparation you must first remove the two covers and the cover of the electrical section Undo the screws of the covers Careful...

Страница 66: ...power consumed by the appliance goes via the isolating transformer Refer to the fitting instructions provided with the isolating transformer Contact the supplier for details of the correct isolating...

Страница 67: ...e sure that the drain valve 9 is closed Open the nearest hot water draw off point 14 Open the stop valve 4 of the cold water supply pipe A Cold water flows into the water heater Fill the water heater...

Страница 68: ...checking the supply pressure To check the supply pressure proceed as follows Isolate the appliance from the power supply see section 4 2 2 Carefully remove the covers from the appliance The electrica...

Страница 69: ...or about 10 seconds and will then go to the main menu Select SERVICE OPERATION FULL LOAD from the service menu Confirm with ENTER The display shown here will appear The appliance is now in Full load m...

Страница 70: ...few turns Do not completely loosen it as it can be difficult to retighten Open the gas supply Connect a pressure gauge to the test nipple Switch on the power to the appliance using the isolator on the...

Страница 71: ...ltage to the appliance Start the appliance see section 4 1 Go to the SERVICE OPERATION menu Generate a heat demand by draining the appliance until it is cold or by raising the value for Tset in the SE...

Страница 72: ...e measure value is within the range given in the table of CO2 values If you have increased Tset set it back to the original value using Continue with the CO2 measurement under partial load If the meas...

Страница 73: ...ockwise means more less lower CO2 level and turning to the right clockwise means more gas higher CO2 level Note After conversion you must check that the gas control valve is gastight Remove the CO2 me...

Страница 74: ...ut off the gas supply Disconnect the pressure gauge Put the two black caps back on the pressure switch Replace the covers 7 8 6 Turn on the water heater Refer to the procedure in the user part to Turn...

Страница 75: ...ursor in front of OFF Confirm OFF with ENTER Wait until the fan has stopped The icon is then dimmed Caution Failure to wait until the fan stops can cause damage to the water heater Switch the water he...

Страница 76: ...76 Installation Maintenance and Service part...

Страница 77: ...u can order the conversion kit you need from the supplier of your water heater The conversion kit contains all the parts needed to do the conversion and a description of how to do the conversion The f...

Страница 78: ...78 Installation Maintenance and Service part...

Страница 79: ...the selected water heater Switching the pump on or off Setting the service interval Service mode Setting legionella prevention Setting the central heating configuration These sub menus are briefly de...

Страница 80: ...an ellipsis is displayed The display first shows the Blocking errors When ENTER is pressed the Lock out errors are then displayed The figure shows an example of Blocking errors In this case the text E...

Страница 81: ...ogram periods is currently active During this period the pump relay setting is OFF If the pump relay is set ON in the service menu the pump will nonetheless remain OFF The pump will only switch ON onc...

Страница 82: ...r adjustment the set point must be set back to the original value using if you exit the SERVICE OPERATION menu or if no buttons are pressed for a period of 15 minutes the water heater will revert to t...

Страница 83: ...od currently displayed The following display appears This display indicates that legionella prevention is switched on 9 2 8 2 Changing legionella prevention start time If you wish to change the start...

Страница 84: ...84 Installation Maintenance and Service part...

Страница 85: ...receive the correct spare parts look at the data plate for the full serial number the water heater model and the used gas category Use this information when you order the spare parts Do the following...

Страница 86: ...from the discharge points of all valves and remove any scale deposits that may be present Drain the water heater see draining see section 7 9 2 10 2 Water side maintenance To do water side maintenanc...

Страница 87: ...Gas side maintenance Do gas side maintenance when the water heater does not operate correctly the air pressure differential is not correct and or the CO2 value is not correct To do gas side maintenanc...

Страница 88: ...UIRED The displayed message can be reset in either of two ways Temporary reset To postpone the message press RESET once The message will reappear on the display 7 days later Full reset To fully reset...

Страница 89: ...resets automatically to resume operation The code is displayed continuously and the back light of the display blinks Errors are reported on the display as follows Line one an error code and a brief de...

Страница 90: ...on Tighten the threaded connection There is a condensate leakage Make sure that the condensation water discharge is working properly If necessary correct the water discharge There is a leakage from an...

Страница 91: ...i Remove any contamination from the venturi inlet Leakage between venturi and flexible venturi connector Make sure that the flexible venturi connector is not damaged If necessary replace the flexible...

Страница 92: ...the cable and or sensor S12 blocking error Short circuit in sensor 1 of temperature sensor T1 at top of tank 1 Short circuit in sensor circuit Replace the cable and or sensor S13 blocking error Short...

Страница 93: ...etween the pressure switch and the controller If necessary replace the wiring Pressure switch not closing Check the speed of the fan see section 12 1 Check that the hoses on the pressure switch and th...

Страница 94: ...ect roof or wall flue terminal has been installed see section 7 6 If necessary install the correct roof or wall flue terminal Check that the roof or wall flue terminal discharges into a permitted area...

Страница 95: ...1 hour If the error does not disappear replace the water heater controller C04 blocking error Appliance selection error Incorrect water heater selection Incorrect selection resistor Check whether the...

Страница 96: ...the warranty will void Anode protection is not working The cables between the potentiostat and anodes are loose or have been connected incorrectly The earth connection of the anodes is loose The water...

Страница 97: ...65 Hysteresis upwards adjustment range C 0 5 0 5 0 5 0 5 Hysteresis upwards default value C 5 5 5 5 Hysteresis downwards adjustment range C 0 10 0 10 0 10 0 10 Hysteresis downwards default value C 5 5...

Страница 98: ...Unit BFC 28 BFC 30 BFC 50 BFC 60 Load profile XXL XXL XXL XXL Energy Efficiency Class Energy Label A A A A Energy Efficiency 91 91 91 90 Daily Electricity Consumption kWh 0 207 0 210 0 211 0 212 Daily...

Страница 99: ...rds adjustment range C 0 5 0 5 0 5 Hysteresis upwards default value C 5 5 5 Hysteresis downwards adjustment range C 0 10 0 10 0 10 Hysteresis downwards default value C 5 5 5 Number of electrical anode...

Страница 100: ...P overflow temperature C 97 Description Unit BFC 80 BFC 100 BFC 120 Load profile 3XL 3XL 3XL Energy Efficiency Class Energy Label Energy Efficiency 93 93 92 Daily Electricity Consumption kWh 0 237 0 3...

Страница 101: ...mm 1390 1925 1925 1925 Ny y position of hot water outlet mm 205 205 205 205 P Height of cleaning opening mm 170 175 175 175 R Height of drain valve connection mm 85 75 75 75 S Height of T P valve con...

Страница 102: ...Fig Dimensions BFC 28 30 50 60 102 Installation Maintenance and Service part...

Страница 103: ...of hot water outlet mm 2060 2060 2060 Ny y position of hot water outlet mm 205 205 205 P Height of cleaning opening mm 290 290 290 R Height of drain valve connection mm 225 225 225 S Height of T P val...

Страница 104: ...Fig Dimensions BFC 80 100 120 104 Installation Maintenance and Service part...

Страница 105: ...temperature nominal load C 44 54 63 68 Gas category 3P G31 Diameter of the venturi restrictor mm 6 00 6 00 6 00 6 00 Nominal Load gross kW 31 5 32 6 51 1 62 0 Nominal output kW 31 0 32 7 50 3 60 4 Su...

Страница 106: ...41 9 172 9 211 1 Flue gas temperature nominal load C 52 55 60 Gas category 3P G31 Diameter of the venturi restrictor mm 6 60 6 60 6 60 Nominal Load gross kW 84 8 103 3 126 1 Nominal output kW 84 2 100...

Страница 107: ...ON C ON OFF OFF 3 ON C ON OFF OFF 4 ON C ON OFF OFF 5 ON C ON OFF OFF 6 ON C ON OFF OFF 7 ON C ON OFF OFF 8 ON C ON OFF OFF 9 ON C ON OFF OFF 10 ON C ON OFF OFF 11 ON C ON OFF OFF 12 ON C ON OFF OFF 1...

Страница 108: ...18 ON C ON OFF OFF 19 ON C ON OFF OFF 20 ON C ON OFF OFF 21 ON C ON OFF OFF Example Period Day Time Tset Pump 1 ON MO 14 30 70 C ON OFF OFF MO 16 15 108 Installation Maintenance and Service part...

Страница 109: ...3 19 18 17 20 24 21 22 23 J33 A R J38 J37 X X J34 J35 J39 J36 4 4 M X X 4 X 2 1 3 2 1 1 2 3 1 2 3 4 2 1 1 5 6 2 3 7 8 4 5 1 5 1 1 6 2 1 4 1 2 5 6 3 6 1 2 4 3 1 7 1 1 2 9 7 5 3 1 11 13 15 10 4 2 8 6 16...

Страница 110: ...nal connection A Earth J Isolating transformer JP3 Temperature sensor T2 connection N Neutral K Double pole isolator L Live input of controller L Controller O I switch JP4 Dummy connection L1 Phase in...

Страница 111: ...TRA PERIOD SERVICE INTERVAL SETTINGS LANGUAGE SERVICE OPERATION START OPERATION SELECT APPLIANCE PROGRAM OVERVIEW PUMP RELAY HISTORY OF ERRORS CHANGE SETPOINT APPLIANCE HISTORY WEEK PROGRAMMA HYSTERES...

Страница 112: ...12 7 Declaration of conformity 112 Installation Maintenance and Service part...

Страница 113: ......

Страница 114: ......

Страница 115: ...O Smith installation instructions for the specific model and the relevant government and local authority installation and building codes rules and regulations in force at the time of installation The...

Страница 116: ...ehouse of the parts or components or water heater to be replaced transport labour installation and other costs associated with the replacement shall not be borne by A O Smith Article 6 Claims A claim...

Страница 117: ...Index A About this manual 7 Appendices 97 C Copyright 3 I Installation 53 P Preface 3 T Trademark 3 Troubleshooting 89 0311704_BFC_28 120_III_ENEN_V2 4 2022 10 17 115...

Страница 118: ...116 Installation Maintenance and Service part...

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