A.O. Smith BFC - 30 manual

XTRA HIGH EFFICIENCY XTRA HIGH EFFICIENCY 28 30 50 60 28 30 50 60 W A TER PRODUCTS COMP ANY W A TER PRODUCTS COMP ANY A DIVISION OF A. O. SMITH CORPORAT ION A DIVISION OF A. O. SMITH CORPORAT ION W A TER PRODUCTS COMP ANY A DIVISION OF A. O. SMITH CORPORAT ION Installation User and Service Manual Installation User and Service Manual Installation Us[...]

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Instruction manual BFC 3 gis Read this manual carefully Wa rn i n g Read this manual carefully before starting up the water heater . Failure to read this manual and to follow the instructions in this manual may lead to accidents, personal injury , and dama ge to the appliance. Copyright © 2008 A.O. Smith water Product s Comp any All rights reserve[...]

4 Instruction manual BFC gis[...]

Instruction manual BFC 5 T able of content s 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.2 What to do if you smell gas - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - [...]

Table of contents 6 Instruction manual BFC 9 Starting and runnin g - - - - - - - - - - - - - - - - - - - - - - 55 9.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5 5 9.2 Starting and running - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55 9.3 The appliance's heating cycle - - - - - - - - - - - - - - [...]

Instruction manual BFC 7 16.2 Tank warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 89 16.3 Conditions for Installation and use - - - - - - - - - - - - - - - - - - - - 89 16.4 Exclusions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 90 16.5 Scope of the warranty - - - - - - - - - - - - - - - - - - - - - - - - -[...]

Table of contents 8 Instruction manual BFC[...]

Instruction manual BFC 9 gis 1 Introduction 1.1 About the appliance This manual describes how to install, service and use the BFC appli ance. The BFC appliance is a condensing water hea ter with a fan in the air intake. The BFC can be installed as either an open or room-sealed applian ce. A concentric chimney connector is fitted standard to the app[...]

Introduction 10 Instruction manual BFC 1 gis • regulations imposed by fire brigade, power companies and municipality . Furthermore, the installation must c omply with the ma nufacturer's instructions. Note Later amendments and/or additions to all regulations, requi rements and guidelines published on or prio r to the moment of installing, wi[...]

Instruction manual BFC 11 gis 1.6 Forms of not ation The following notation is used in this man ual: Note Important information. Attention Ignoring this information can lead to the applia nce being damaged. Wa r n i n g Failure to carefully read this information may lead to personal inju ry and serious damage to the appli ance.[...]

Introduction 12 Instruction manual BFC 1 gis 1.7 Overview of this document The table provides an overview of the contents of this document. Content s of this docu ment Chapter T arget groups Description Working principle of the appliance This chapter describes ho w the appliance functions. Installation This chapter describes the installation activi[...]

Instruction manual BFC 13 gis 2 W orking principle of the appliance 2.1 Introductio n T opics covered in this chapter: • General working princi ple of the appliance ; • The appliance's heating cycl e ; • Protection for the appliance ; • Safety of the inst allation . 2.2 General working principle of the appliance The figure shows a cut-[...]

Working princi ple of the applian ce 14 Instruction manual BFC 2 gis In this appliance the col d water enters t he botto m of the tank via the cold water inlet (14). Once heated by the combustion chamber (8) and heat exchanger (1 1), the hot tapwater leaves the tank th rough the hot water outlet (2). Once the appliance is completely filled with wat[...]

Instruction manual BFC 15 gis 2.4.2 Water temperatu re protect ion The electronic controll er uses temperat ures se nsors T1 (7) and T2 (13) to monitor three temperatures that are impo rtant for safety . The table explains the functioning of the temperature sensors. T emperature protection 2.4.3 Ga s valve The electronic controller opens th e gas v[...]

Working princi ple of the applian ce 16 Instruction manual BFC 2 gis 2.4.6 Flame probe T o ensu re that no gas can flow when there is no combustion, the water heater is fitted with a flame probe (21). The el ectronic controller uses this probe to detect the presence of a flame, by means of ionisation dete ction. The electronic controller closes the[...]

Instruction manual BFC 17 is 3 Inst allation Wa r n i n g Installation work should be carried o ut by an approved installation e ngineer in compliance with the general and local reg ulations imposed by the gas, water and power supply companies and the fire service. The appliance may only be installed in a room that complies with the requirements st[...]

Installation 18 Instruction manual BFC 3 is 3.3.1 Air humidity and ambient temperature The boiler room must be frost-free, or be protected aga inst frost. The table shows the environmental conditions that must be adhere d to for correct functioning of the electronics presen t in the appliance to be guaranteed. Air humidity and ambient temperature s[...]

Instruction manual BFC 19 is If the available clearance is less than 100 cm, fle xible magnesium anodes may be ordered . Note When installing the appli ance, be aware tha t any leakage from the tank and/or connections can cause damage to the immediate en vironment or floors below the level of the boiler room. If th is is the case, the appliance sho[...]

Installation 20 Instruction manual BFC 3 is 3.4 T echnical specifica- tions The appliance is supplied withou t accessories. Check the dimensions (3.4.1 "Dimensions of th e appliance") , gas data (3.4.3 "Gas data") and other specification s (3.4.2 "General and electrical specifications") of any accessories you plan to u[...]

Instruction manual BFC 21 is Dimensions (all sizes in mm, unless otherwise stated) 3.4.2 Ge neral and electrical specificat ions General and electrical specifications Dimen sion Description BFC 28 BFC 30 BFC 50 BFC 60 A T ot al height 1390 1910 1910 1910 D Diameter of the appliance 705 705 705 705 G Flue gas outlet diameter 80/125 100/150 100/150 1[...]

Installation 22 Instruction manual BFC 3 is 3.4.3 Gas dat a Gas data Description II 2H3+ Unit BF C 28 BFC 30 BFC 50 BFC 60 Gas category 2H: G20 - 20 mbar Injector orifice diam eter mm 4.90 5.10 7.00 7.10 (1) = Blank plate (2) = Burner pressure regulator 1 or 2 2 2 2 2 Nominal load (gro ss calorific value) kW 32.1 34.5 52.6 63.2 Nominal output kW 30[...]

Instruction manual BFC 23 is 3.5 Inst allation diagram Installation diagram Legend Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4. stop valve (recommended in pipe C and mandatory in pipe A) 5. non-return valve (mandatory) 6. circulation pump (optional) 9. drain valve 10. manual gas valve[...]

Installation 24 Instruction manual BFC 3 is 3.6 Water connec tions, Unvented Wa r n i n g The installation should be carrie d out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations") . 3.6.1 Cold water side See (A) in the installation diagram (3.5 "Installation diagram") . [...]

Instruction manual BFC 25 is 3.7 W ater connections, Ve n t e d Wa r n i n g The installation should be carried out by an authorised installation engineer , in compliance with general and local regulatio ns (1.3 "Regulations") . 3.7.1 Col d water side See (A) in the installation diagram (3.5 "Inst allation diagr am") . 1. Fit an[...]

Installation 26 Instruction manual BFC 3 is 3.8 Gas c onnectio n Wa r n i n g The installation should be carrie d out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations") . Attention Make sure that the diameter and lengt h of the gas supply pipe are large enough to supply sufficient [...]

Instruction manual BFC 27 is T ypes of appliances IMD-0468 R0 C43 C13 C53 B23 C33[...]

Installation 28 Instruction manual BFC 3 is Explanation of type of appliance Note Make sure that the chimney discharges into an are a where this is permitted for this category of appliance. 3.9.3 Concentric connections The table shows the requirem ents for concentric systems. Wa r n i n g Install flue gas discharge pipe runs with a run-off of 5 mm [...]

Instruction manual BFC 29 is Appliance with concentric flue gas discharge material According to the table, the maximu m length allowed is 40 metres, and there may be up to seven 90 degree bends. Both requirements are fulfilled. Specifications Attention For type C13 and C33 installations,A.O. Smith prescribes the use of a roof or wall-mounted termin[...]

Installation 30 Instruction manual BFC 3 is Concentric wall flue termina l specifications C13 Concentric roof flue terminal specifications C33 Specification Description W all flue terminal set: • 1X Wall flue terminal (incl. wall flange & clamping ring) • 1X Pipe 500mm • 1X Bend 90° Art. No. BFC 28 BFC 30-50-60 0302 515 1 0302 504 1 Cons[...]

Instruction manual BFC 31 is 3.9.4 Para llel connec tions The table st ates the maxi mum pipe lengths fo r parallel systems. The maximum pipe length dep ends on the chosen diamete r . Wa r n i n g Install flue component pipe runs with a run-off of 5 mm per metre. Flue gas outlet requirements for p arallel systems Y ou must use the longest pipe when[...]

Installation 32 Instruction manual BFC 3 is Appliance with parallel flue gas discharge material The longest pipe must be used to check the maximum length. In this case, the chimney pipe is the longest. This is 25 metr es. This 25 metres is the sum of pipe sections 1, 2, 3, 4 and 5. The length of the transitio n piece can be ignored. T he total numb[...]

Instruction manual BFC 33 is Optionally , it is possible to connect an is olating transformer , a continuous pump, a program-controlled pump, an extra ON mode switch and an extra alarm signal to the appliance. For these options, see: • Isolating transformer ; • Connecting continuous pump ; • Connecting a program-controlle d pump ; • Connect[...]

Installation 34 Instruction manual BFC 3 is In preparation, you must first remove the two plastic covers and the protective cap of the electrical section. 1. Undo the screws of the plastic covers. 2. Carefully remove the covers from the applian ce. The electrical secti on is now visible. 3. Loosen the 2 screws (A) of the electric al section, and re[...]

Instruction manual BFC 35 is 4. If you have no more connections to make: - Fit the cap on the electrical te rminal block. - Fit the plastic covers onto the applianc e. 5. Connect the power cable to the isolato r . 3.10.5 Connecting continuous pump 1. Connect phase (L), neutral (N) and earth ( ) to terminals 7, 8 and 9 as stated in the table (3.10.2[...]

Installation 36 Instruction manual BFC 3 is 3.1 1 Checking the supply pressure and burner pressure Note Before starting the appliance and/or checking the supply pressure and burner pressure, you must fill (5 "Fi lling") the applian ce. Attention Before starting up for th e first time or after conversion, you must always check the supply p[...]

Instruction manual BFC 37 is 3.1 1.2 Procedure to check pressures 1. T here are two test nippl es on the gas control: - a supply pressure nipple (1) - a burner pressure nipple (2) Sealing screws are located inside the test nipples. Lo osen both sealing screws by a few turns. Do not completely loosen them; they can be di fficult to re-tighten. 2. Co[...]

Installation 38 Instruction manual BFC 3 is 9. Use the pressure gaug e to read the supply pressure at 1nipple (1) (3.4.3 "Gas dat a") . Note Consult the mains gas supply company if the supply pressure is not correct. 10. Use the pressure gauge to rea d the burner pressure at nip ple (2) (3.4.3 "Gas dat a") . If the burner pressu[...]

Instruction manual BFC 39 is 4 Conversion to a different gas category Attention The conversion may only by carried out by an authorised installation engineer . If the appliance must operate on a family of gases (LP gas or natural gas) or other gas category than th at for which the appliance has been set at the factory , the appliance will have be a[...]

Conversion to a differen t gas category 40 Instruction manual BFC 4 is 1. Isolate the water heate r from the power supply (10.3 "Electrically isolating the appliance") . 2. Shut off the gas supply . 3. Undo the screws of the plastic covers. 4. Carefully remove the covers from the top of the app liance. 5. Detach the connector (1) that con[...]

Instruction manual BFC 41 is 10. Check whether there is a burner pressure regulator (7) attached to the top of the gas control, or simply a blank plate (8). Note In the event of the supply pressure for a gas categ ory being the same as the burner pressure (3.4.3 "Gas data") , the gas control must be fitted with a blanking plate with a cor[...]

Conversion to a differen t gas category 42 Instruction manual BFC 4 is[...]

Instruction manual BFC 43 gis 5 Filling Installation diagram Legend Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4. stop valve (recommended in pipe C and mandatory in pipe A) 5. non-return valve (mandatory) 6. circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 1 [...]

Filling 44 Instruction manual BFC 5 gis 5.1 Filling the appliance 5.1.1 Filling unvented installations T o fill the appliance, proceed as follows: 1. Open the stop valve (1 1) in the hot wate r pi pe and, if present, the stop valves (4) for the circulation pump (6). 2. Close the drain valve (9). 3. Open the nearest hot wate r draw-off point (14). 4[...]

Instruction manual BFC 45 gis 6 Draining Installation diagram Legend Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4. stop valve (recommended in pipe C and mandatory in pipe A) 5. non-return valve (mandatory) 6. circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 1[...]

Draining 46 Instruction manual BFC 6 gis 6.1 Draining unvented inst allations 1. Activate the MENU with . 2. Position the cu rsor in front of OFF . 3. Confirm OFF with . 4. W ait until the fan has stopp ed. The symbol is then dimmed. Attention Failure to wait until the fan stop s purging can cause damage to the appliance. 5. Switch the appliance OF[...]

Instruction manual BFC 47 gis 6. Isolate the water heater from the power supply by putting the isolator between the appliance and th e mains power supply to position 0. 7. Shut off the gas supply (10). 8. Close the stop valve (1 1) in the hot water pipe. 9. Close the stop valve (4) between the water tank and the cold water inlet (A). 10. Open the d[...]

Draining 48 Instruction manual BFC 6 gis[...]

Instruction manual BFC 49 gis 7 The control p anel 7.1 Introductio n T o p ics covered in this chapter: • Controls ; • Meaning of ico ns ; • Electronic controller ON/OFF switch ; • Navigation buttons ; • PC connection . 7.2 Controls The figure shows the el ectronic controller . The control panel is completely menu-driven, and comprises: ?[...]

The control pane l 50 Instruction manual BFC 7 gis • Butto ns for UP , and DOWN ; • Enter: ; • Reset button: . The ^ arrows and È indicate that you can scroll up and/or down. Use the buttons and to scroll. The cursor » points to the option to be activated. In the display as shown in the figure, you can scroll th rough the main menu. The mai[...]

Instruction manual BFC 51 gis 8 S t atus of the appliance 8.1 Introductio n T o p ics covered in this chapter: • Operating modes ; • Error conditions ; • Service con dition . 8.2 Operating modes When running, the applian ce has four basic operating modes, namely: • OFF • ON • EXTRA • PROG 8.2.1 OFF In this mode, the fro st protection [...]

Status of the app liance 52 Instruction manual BFC 8 gis 8.2.4 PROG In this mode a preset week program is active, and the appliance responds con tinually to dema nd within the time periods set in the week prog ram. There are two distinct situations possible in this mode: 1. The current time falls within a set time period of the week program. The fi[...]

Instruction manual BFC 53 gis 8.4 Service condition The figure shows th e message SERVICE REQUIRED .Should this message a ppear , then the appliance is in need of a service and maintenance inspection. In th at case, contact your service and maintenance engine er . Note The message SERVICE REQUIRED is based on the number of expired bur n ing hours a[...]

Status of the app liance 54 Instruction manual BFC 8 gis[...]

Instruction manual BFC 55 gis 9 S t arting and running 9.1 Introductio n T o p ics covered in this chapter , in sequence: • S tarting and running . • The appliance' s heating cycle . 9.2 St arting and runn ing S tart the appliance as follows: 1. Fill the appli ance (5 "Filling") . 2. Open (3.5 "Installation diagram") th[...]

Starting and ru nning 56 Instruction manual BFC 9 gis Once the appliance starts, it will run through the following steps: 1. The water temperature drops below the set temperature of (for example) 65 °C. The electronic controller detects a dema nd and starts the heating cycle. - The icon is activated. - The message HEAT DEMAND appears. 2. Once dema[...]

Instruction manual BFC 57 gis 10 Shutting down 10.1 Introductio n This chapter describes: • Shut the appliance down for a brief peri od ("OFF mode") ; • Electrically isolating th e appliance ; • Shutting the a ppliance down for a long period . 10.2 Shut the appliance down for a brief period ("OFF mode") T o shut the applia[...]

Shutting down 58 Instruction manual BFC 10 gis[...]

Instruction manual BFC 59 gis 1 1 Main menu 1 1.1 Introduction The MENU is reached by pressing the button on the electronic controller . The main menu comprises: • OFF Select this optio n if you wish to turn off (10 " Shutting down") the appliance for a brief period, but do not wish to dr ain it. In thi s mode, the frost protection is a[...]

Main menu 60 Instruction manual BFC 11 gis • Confi rm with .After confirming, the appliance enters "ONmode". Note If the preset temperature is hig her than the current water temperature, then the appliance might not immediately start the heating cycle. T o prevent excessively frequent switching on and off, there is a heating margin. The[...]

Instruction manual BFC 61 gis The display shows the menu for the week program, see the figure below . With the default setting, the program switches on and off every day at 00:00 and 23:59 hours respectively , the water temperature is 65°C and the pump is switched on ( P ). Example As an example, we wi ll set the switch-on time for Sunday to 08:15[...]

Main menu 62 Instruction manual BFC 11 gis 1 1.7.4 Week program: setting t he program- controlled pump 1. If required, a pump can be controlled during the period. Use and to set PUMP ON . The pump ensures a regular circulatio n of hot water in the ho t water pipes. Y ou can skip this step if you there is no pump in your hot water circuit. Confirm w[...]

Instruction manual BFC 63 gis 1 1.9 Deleting times from a week program All switch-on/off times are shown sequentially in the display . Assume that the switch-on/off times for the appliance are programmed as in th e figure. T o de lete a period, proceed as follows: 1. : WEEK PROGRAM | PROGRAM OVERVIEW . Confirm with . 2. Scroll with to PROGRAM OVERV[...]

Main menu 64 Instruction manual BFC 11 gis If the water temperature becomes too low during the extra perio d (1 1.1 1 "Programming an ex tra period") , the appliance will run through the heating cycle (9.3 "The applianc e's heating cycle") and fall back into the extra period. The same settin gs can be made for an extra peri[...]

Instruction manual BFC 65 gis 11 . 1 2 S e t t i n g s Using the SETTINGS option, you can adjust certain settings and read certain appliance data: • Adjustable settings - Languag e of the menu. - Current day of week and time. • Displayable appliance specifications , this category is only relevant to the installation engineer and/o r service and[...]

Main menu 66 Instruction manual BFC 11 gis Confirm the minute setting with The time has been set. Note The appliance takes no account of daylight saving. 1 1.12.3 D isplaying appliance s pecifications Note This category is sol ely intended for the installation engineer and/or servi ce and mainte nance engineer . The table shows the correct settings[...]

Instruction manual BFC 67 is 12 Service program 12.1 Introductio n The service program i s used by the installation engineer or servi ce and maintenance engineer for: • Setting the hysteresis ; • Displaying the error history ; • Displaying the appliance history ; • Display the selected appliance ; • Switching the pump on or off ; • Sett[...]

Service program 68 Instruction manual BFC 12 is 12.4 Displaying the appliance history The appliance history submenu is used to display the burning hours, the nu mber of ignitio ns, the number of flame errors and the number of ignition errors. Call up the menu for displaying th e appliance history as follows: •: APPLIANCE HISTOR Y The figure shows[...]

Instruction manual BFC 69 gis 13 T roubleshooting 13.1 Introductio n A distinction is made between: • General errors General errors are not reported on the displa y . General errors are: - Gas smell - Display does not light up - Insufficient or no hot water . - Water leakage - Explosive ignition. The manual include s a table with general errors ([...]

is Instruction manual BFC 70 13.2 T roubleshooting t able for general errors Wa r n i n g Maintenance may only be perfo rmed by a qualified service and mai ntenance engineer . General erro rs Symptom Cause Solution Remark Gas smell Gas leak Wa r n i n g Close the main gas valve immediately . Wa r n i n g Do not operate any switches. Wa r n i n g No[...]

is Instruction manual BFC 71 W ater leakage Leakage from a water connection (threaded) T ighten the threaded connection If the leak persists, consult your installation en gineer Condensate leakage Check that the condensation water discharge is working properly . Rectify if necessary Leakage from another nearby water appliance or pipe segment T race[...]

is Instruction manual BFC 72 13.3 T roubleshooting t able for displayed errors Displayed errors Code + Descripti on Cause Solution Re mark S01 (blocking error) Open circuit from temperature sensor T2 at bottom of the tank Sensor is not (correctly) connected Connect the sensor lead to JP3 See the BFC electrical di agram (17 "Appendices") D[...]

is Instruction manual BFC 73 S12 (blocking error) Short circuit in sensor 1 of temperature sensor T 1 at the top of the tan k (1) Short circuit in sensor circuit Replace sensor T 1 T o replace the necessary parts, you must contact your installation engineer S13 (blocking error) Short circuit in sensor 2 of temperature sensor T1 at the top of the ta[...]

is Instruction manual BFC 74 F02 (lock out error) Fan fails to run at correct speed. Defective motor and/or rotor . 1. Check the motor and rotor 2. Replace the fan if the motor or rotor is defective. 3. Reset appliance controlle r See the BFC electrical di agram (17 "Appendices") T o have the wiring replaced and a new fan fitted , you mus[...]

is Instruction manual BFC 75 Air pressure switch fails to close during pre- purge. Air pressure switch leads 1. Check the wiring between th e air pressure switch and the controller . Rectify any defect: - if any wires are damaged, repl ace the wiring harness - properly connect loose or detached hoses 2. Reset appliance controlle r Loose air pressur[...]

is Instruction manual BFC 76 F03 (lock out error) The pressure switch fails to work correctly Damaged wiring/Open circuit 1. Check the wiring between th e pressure switch and the controller 2. If necessary , repla ce the wiring If the error cannot be resolved or is persistent, contact your installation engineer T o replace the necessary parts, you [...]

is Instruction manual BFC 77 F04 (lock out error) Three unsuccessful ignition attempts. No g as 1. Open the main gas valve and/ or the manual gas valve supplying the water heater 2. Check the supply pressure to the gas control 3. If necessary , repair the gas supply T o repair the gas supply , contact your installation engineer Air in the gas pi pe[...]

is Instruction manual BFC 78 F06 (lock out error) Short circuit between flame probe and earth Damaged cable in contact with metal surface. Check the wiring of the flame pr obe. If necessary , repl ace the wiring. If the error persists, contact your inst allati on engineer . T o replace the necessary parts, you must contact your installation enginee[...]

is Instruction manual BFC 79 F10 (lock out error) Restriction on the number of ig nition attempts based on pressure switch state changes. Pressure switch not closing 1. Check th e running speed of the fan (12.5 "Display the selected appliance") 2. Check that the hoses on the pr e ssure switch and the air supply hose between fan and burner[...]

is Instruction manual BFC 80 C02 (lock out error ) Error message from the appliance controller . Incorrect reference voltage from the AD converter . 1. Reset electronic co ntroller . 2. Check that the frequency of the power supply is compliant (3.4.2 "General and electrical specifications") . If this is not the case, contact your installa[...]

is Instruction manual BFC 81 E01 (blocking error) The temperature protection at the top of the tank has been activated. The temperature of the water at the top of the tank is > 85 o C. None. This is a temporary message that may appear from time to time, but will disapp ear automatically . E03 (lock-out error ) Error in temperature sensor T 1 at [...]

is Instruction manual BFC 82[...]

Instruction manual BFC 83 is 14 Maintenance frequency 14.1 Introductio n A service should be carried ou t at least once a yea r , b oth on the water side and on the gas side. Maintenance fre quen cy depends, among other things, on the water quality , the average bu rning time per da y and the se t water temperature. Note Regular maintenance extends[...]

Maintenance frequency 84 Instruction manual BFC 14 is[...]

Instruction manual BFC 85 s 15 Performing maintenance 15.1 Introductio n Attentio n Maintenance may only be performed by a qualified servi ce and maintenance engineer . At each service, the appliance unde rgoes maintenan ce on both the water side and the gas side. The maintena nce must be carried out in the fo llowing order . 1. Preparation for mai[...]

Performing maintenance 86 Instruction manual BFC 15 s 6. Switch the electronic controlle r ON by setting the ON/OFF switch to position I . The display will now show INTERNAL CHECK for about 10 seconds, and will then go to the main menu. 7. Activate "ON mode" by going through the following steps: - Press once on the blue arrow ( ) to posit[...]

Instruction manual BFC 87 s 15. T est the operation of the overflow valv e of the pro tected cold su pply setup. The water shou ld spurt out. 16. T est the overflow operation of the T&P valve. The w ater should spurt ou t. 17. Check the drain pipes from the discharge points of all valves and remove any lime buildup that may be present. 18. Drai[...]

Performing maintenance 88 Instruction manual BFC 15 s 4. Inspect the tank and remove the loose scale deposits and contamination. 5. If the scale cannot be remo ved by hand, then the appl iance will need to be descaled using a descaling agent. Contact the supplier for advice on the preferred descaling agent. 6. Close the cleaning op ening. T o avoid[...]

Instruction manual BFC 89 gis 16 W arranty (certificate) T o register your warranty , you shou ld complete and return the enclose d warranty card after which a wa rranty ce rtificate will be se nt to you. This certificate gives the owner o f a applianc e supplied by A.O. Smith water Products Company B.V . of V eldhoven, The Nether land s (hereinaft[...]

Warranty (certificate) 90 Instruction manual BFC 16 gis i. The appli ance is at all times fitted with cathodic pro tection. If sacrificial anodes are used for this, these must be replaced and renewed whe n, and as soon as, they are 60% or mo re consumed. When e lectric anodes are used, it is important to ensure that they continue to work properly .[...]

Instruction manual BFC 91 is 17 Appendices 17.1 Introductio n This appendix contains: • Electrical diagram • Week program card[...]

Appendices 92 Instruction manual BFC 17 is 17.2 Electrical diagram Electrical diagram 1 = brown, 2 = blue, 3 = green, 4 = black, 5 = white, 6 = gre y / beige 0307 579 R1[...]

Instruction manual BFC 93 is TERMINAL BLOCK CONNECTIONS: Earth N Neutral L 1 Phase input of controller L 2 Phase input of isolating transformer (primary side) L 3 Phase output of isolating transformer (secondary side) L 4 Phase input of program-controlled pump L 5 Phase input of co ntinuous pump COMPONENTS: A Control ler B Flame probe C Hot surface[...]

Appendices 94 Instruction manual BFC 17 is[...]

Instruction manual BFC 95 17.3 Week program card Y ou can cut th e week program card out and keep it near the appliance. Example Period DA Y TIME T set Pump 1. ON ....°C ON / OFF OFF 2. 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. O[...]

Instruction manual BFC 96[...]

Instruction manual BFC 97 Index A ambient temperature 18 appliance displaying history 68 displaying selection 68 displaying specifications 66 general working principle 13 heating cycle 14 protection 14 types 9, 17 B burner pressure 36 C claims 90 connect 24, 25 air supply 26 Alarm OUT 35 circulation piping 24, 25 cold water side 24, 25 condensation[...]

0306 059 4.1 UK Index Instruction manual BFC mode ERROR 52 EXTRA 51 HEAT DEMAND 55 IGNITION 55 OFF 51 ON 51 POST-PURGE 55 PRE-GLOW 55 PRE-PURGE 55 PRESSURE SWITCH 55 PROG 52 RUNNING 55 SERVICE REQUIRED 53 N navigation buttons 49 O off 51 on 51 ON mode 59 on/off switch 49 operating modes EXTRA 51 general 51 OFF 51 ON 51 PROG 52 P packaging 17 PC con[...]