Page 3 - gis; Read this manual carefully; Trademarks
Instruction manual BFM 3 gis Read this manual carefully Warning 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 damage to the appliance. Copyright © 2007 A.O. Smith W...
Page 5 - Table of contents
Instruction manual BFM 5 Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.2 What to do if you smell gas - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.3 Regulations - - ...
Page 7 - Introduction; About the appliance; Regulations
Instruction manual BFM 7 gis 1 Introduction 1.1 About the appliance This manual describes how to install, service and use the BFM appliance. The BFM appliance is a gas-fired sealed boiler with a fan in the air supply. The parallel or concentric chimney connections are appliance-dependent. Possible i...
Page 8 - Maintenance
Introduction 8 Instruction manual BFM 1 gis Furthermore, the installation must comply with the manufacturer's instructions. Note Later amendments and/or additions to all regulations, requirements and guidelines published on or prior to the moment of installing, will apply to the installation. 1.4 Ma...
Page 14 - Water temperature protection; Pressure switch; Flame probe
Working principle of the appliance 14 Instruction manual BFM 2 gis • the Water temperature protection ; • the Flame probe ; • the Pressure switch . 2.4.2 Water temperature protection By means of the frost, high-limit and safety thermostats, the burner control monitors three temperatures that are imp...
Page 15 - Unvented installation
Instruction manual BFM 15 gis 2.5 Safety of the instal-lation In addition to the appliance's standard built-in safety monitoring, the appliance must also be protected by an expansion vessel, expansion valve, pressure reducing valve, non-return valve and a T&P valve.The use of an expansion vessel...
Page 17 - is; Installation; Ambient conditions
Instruction manual BFM 17 is 3 Installation Warning Installation work should be carried out by an approved installation engineer in compliance with the general and local regulations imposed by the gas, water and power supply companies and the fire service.The appliance may only be installed in a roo...
Page 18 - Maximum floor load; Working clearances
Installation 18 Instruction manual BFM 3 is 3.3.2 Maximum floor load Allow for the appliance's weight with respect to the maximum floor load; refer to the table. 3.3.3 Water composition The appliance is intended for heating drinking water. The drinking water must comply with the regulations governin...
Page 20 - Dimensions of the appliance
Installation 20 Instruction manual BFM 3 is 3.4.1 Dimensions of the appliance Plan and elevation of the appliance Replacement of burner pressure regulator or blank plate BFM30-50-80-100(2) = BFM 100, 120 IMD-0057 R5 37º 10º 45º 37º 10º 45º A B N S 1 6 6 2 5 3 4 D K R M P P 6 4/6 F E G/L 6 4/6 F E G ...
Page 24 - Cold water side; Drain valve
Installation 24 Instruction manual BFM 3 is 3.6 Water connections, Vented Warning The installation should be carried 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...
Page 25 - Circulation pipe
Instruction manual BFM 25 is 3.6.5 Circulation pipe See (C) in the installation diagram (3.5 "Installation diagram") . If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed. This improves comfort and reduces water wastage.1. Fit a circulation p...
Page 26 - Gas connection
Installation 26 Instruction manual BFM 3 is 3.7.5 Circulation pipe See (C) in the installation diagram (3.5 "Installation diagram") . If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed. This improves comfort and reduces water wastage.1. Fit ...
Page 27 - Air supply and flue; Installing chimney flue components for BFM 30, 50, 80
Instruction manual BFM 27 is 3.9 Air supply and flue 3.9.1 Introduction Warning The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations") . The BFM 30, 50 and 80 differ from the BFM 100 and 120 in how t...
Page 28 - Concentric wall flue terminal BFM 30-50-80
Installation 28 Instruction manual BFM 3 is 3.9.3 Concentric wall flue terminal BFM 30-50-80 Wall flue terminal 3.9.4 C13 concentric wall flue terminal specifications (BFM 30, 50, 80) C13 Concentric wall flue terminal specifications . A B IMD 0060 R2 Subject Description Wall flue terminal set:• 1x W...
Page 29 - Concentric roof flue terminal BFM 30, 50, 80
Instruction manual BFM 29 is 3.9.5 Concentric roof flue terminal BFM 30, 50, 80 Roof flue terminal . A B C IMD-0061 R2
Page 30 - Installing chimney flue components for BFM 100, 120
Installation 30 Instruction manual BFM 3 is 3.9.6 C33 concentric roof flue terminal specifications (BFM 30, 50, 80) C33 concentric roof flue terminal specifications 3.9.7 Installing chimney flue components for BFM 100, 120 The air supply duct (1) and chimney flue (2) for the BFM 100 and 120 emerge s...
Page 31 - Concentric wall flue terminal BFM100, 120
Instruction manual BFM 31 is A.O. Smith prescribes the use of a concentric roof or wall flue terminal, exclusively of a type approved for the appliance. Use of an incorrect roof or wall flue terminal can cause the installation to malfunction. You must also fulfil the following requirements:• The max...
Page 32 - C13 concentric wall flue terminal specifications (BFM 100, 120)
Installation 32 Instruction manual BFM 3 is 3.9.9 C13 concentric wall flue terminal specifications (BFM 100, 120) C13 Concentric wall flue terminal specifications Subject Description Wall flue terminal set:• 1x Wall flue terminal (incl. wall flange & clamping ring) • 1x Clamping ring • 1x Transi...
Page 33 - Concentric roof flue terminal BFM 100, 120
Instruction manual BFM 33 is 3.9.10 Concentric roof flue terminal BFM 100, 120 Roof flue terminal . IMD-0239 R1 A C B
Page 34 - C33 concentric roof flue terminal specifications (BFM 100, 120); connection
Installation 34 Instruction manual BFM 3 is 3.9.11 C33 concentric roof flue terminal specifications (BFM 100, 120) C33 concentric roof flue terminal specifications 3.10 Electrical connection Warning The installation should be carried out by an authorised installation engineer, in compliance with gen...
Page 35 - Connecting the mains power
Instruction manual BFM 35 is In preparation you should 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 appliance. The electrical section is now visible. 3. Loosen the 2 screws (A) of...
Page 36 - Checking the supply
Installation 36 Instruction manual BFM 3 is 3.11 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 "Filling") the appliance. Caution Before starting up for the first time or after conv...
Page 39 - Conversion
Instruction manual BFM 39 is 4 Conversion to a different gas category Caution 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 that for which the appliance has been set...
Page 40 - Orifice replacement
Conversion to a different gas category 40 Instruction manual BFM 4 is 4.2 Orifice replacement Gas control assembly removed 1. Remove the protective cover from the control column: undo the 4 screws and remove the protective cover by lifting it. The electrical section will now be exposed. 2. Remove th...
Page 43 - Filling
Instruction manual BFM 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)5. non-return valve (mandatory)6. circulation pump (optional)7. top to bottom circulation pump (opt...
Page 45 - Draining
Instruction manual BFM 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)5. non-return valve (mandatory)6. circulation pump (optional)7. top to bottom circulation pump (op...
Page 49 - Explanation of icons; Control thermostat
Instruction manual BFM 49 gis 7 The control panel 7.1 Introduction Topics covered in this chapter:• Control panel ; • Explanation of icons ; • ON/OFF switch ; • Control thermostat ; • Burner control reset button . 7.2 Control panel The figure shows the control panel. The control panel The control pa...
Page 50 - Burner control reset button
The control panel 50 Instruction manual BFM 7 gis 7.6 Burner control reset button An error in the appliance can cause a lockout of the burner control. When this happens, the reset button lamp will be lit. Once the cause of the error has been rectified, you can reset the appliance using the reset but...
Page 51 - Operating modes; Error conditions
Instruction manual BFM 51 gis 8 Status of the appliance 8.1 Introduction Topics covered in this chapter:• Operating modes ; • Error conditions ; 8.2 Operating modes When running, the appliance has three basic operating modes, namely:• ELECTRICALLY ISOLATED In this mode, the appliance is off and no c...
Page 53 - Starting and running; Starting the appliance; The appliance's heating cycle
Instruction manual BFM 53 gis 9 Starting and running 9.1 Introduction Topics covered in this chapter:• Starting the appliance ; • The appliance's heating cycle . 9.2 Starting the appliance Start the appliance as follows:1. Fill the appliance (5 "Filling") . 2. Open (3.5 "Installation dia...
Page 55 - Shutting down; Shutting down the appliance for a brief; Shutting the appliance down for a long
Instruction manual BFM 55 gis 10 Shutting down 10.1 Introduction Topics covered in this chapter:• Shutting down the appliance for a brief period (OFF mode) ; • Isolating the appliance from the mains ; • Shutting the appliance down for a long period . 10.2 Shutting down the appliance for a brief peri...
Page 57 - Troubleshooting
Instruction manual BFM 57 gis 11 Troubleshooting 11.1 Introduction This chapter deals with the following problems with the appliance:• Gas smell. • Water leakage. • Explosive ignition. • Poor flame profile. • No hot water. • Insufficient hot water. When the appliance is in an error condition, the he...
Page 59 - Troubleshooting: insufficient hot water
is Instruction manual BFM 59 11.3 Troubleshooting: insufficient hot water Warning Maintenance may only be performed by a qualified service and maintenance engineer. Insufficient hot water Symptom Cause Solution Remark Insufficient hot water Water temperature setting (T set ) is too low Set the contr...
Page 63 - Preparation for
Instruction manual BFM 63 s 12 Performing maintenance 12.1 Introduction Caution Maintenance may only by carried out by an approved service and maintenance engineer. At each service, the appliance undergoes maintenance on both the water side and the gas side. The maintenance must be carried out in th...
Page 64 - nance; Checking the anodes
Performing maintenance 64 Instruction manual BFM 12 s 12.3 Water-side mainte- nance 12.3.1 Introduction The following steps must be carried out on the water side:1. Checking the anodes . 2. Descaling and cleaning the tank . 12.3.2 Checking the anodes Timely replacement of the anodes extends the serv...
Page 66 - Checking the flue baffles
Performing maintenance 66 Instruction manual BFM 12 s 12.4 Gas-side mainte- nance 12.4.1 Introduction The following steps must be carried out on the gas side:1. Clean the burner(s) . 2. Clean the orifice(s) . 3. Checking the flue baffles . 12.4.2 Clean the burner(s) 1. Detach the burner(s)2. Remove ...
Page 67 - General warranty
Instruction manual BFM 67 gis 13 Warranty (certificate) To register your warranty, you should complete and return the enclosed warranty card after which a warranty certificate will be sent to you. This certificate gives the owner of a appliance supplied by A.O. Smith Water Products Company B.V. of V...
Page 68 - warranty
Warranty (certificate) 68 Instruction manual BFM 13 gis i. The appliance is at all times fitted with cathodic protection. If sacrificial anodes are used for this, these must be replaced and renewed when, and as soon as, they are 60% or more consumed. When electric anodes are used, it is important to...
Page 69 - Electrical diagram
Instruction manual BFM 69 is 14 Electrical diagram 14.1 Introduction This chapter shows the electrical diagram(s) and accompanying legend.
Page 73 - Index
Instruction manual BFM 73 Index A ambient temperature 17 B burner pressure 36 C claims 68connect air supply 27circulation piping 25, 26cold water side 24, 25electrical 34, 35gas 26hot water side 25shut pipe 24, 25 connecting air supply 27connecting circulation pipe 25, 26connecting cold water side 2...
