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A.O. Smith
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Household Appliance
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Water Heater
A.O. Smith
BFC - 80, BFC -100
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Instruction manual BFC
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REGULATION INTERVAL
40
_
80ÉC
Contents
Main
Page
Instruction manual BFC 3
Read this manual carefully
Trademarks
Liability
More information
Page
Table of contents
9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 53
10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 55
11 Main menu - - - - - - - - - - - - - - - - - - - - - - - - - - - 57
12 Service program - - - - - - - - - - - - - - - - - - - - - - - - 65
13 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - 67
Page
Page
Instruction manual BFC 9
1 Introduction
1.1 About the appliance
1.2 What to do if you smell gas
1.3 Regulations
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1.4 Target groups
1.5 Maintenance
1.6 Forms of notation
Instruction manual BFC 11
1.7 Overview of this document
Page
Instruction manual BFC 13
2 Working principle of the appliance
2.1 Introduction
2.2 General working principle of the appliance
14 Instruction manual BFC
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2.3 The appliance's heating cycle
2.4 Protection for the appliance 2.4.1 Introduction
Instruction manual BFC 15
2.4.2 Water temperature protection
2.4.3 Gas valve
2.4.4 Fan
2.4.5 Pressure switch
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2.4.6 Flame probe
2.5 Safety of the installation
2.5.1 Unvented installation
2.5.2 Vented installation
3 Installation
3.1 Introduction
3.2 Packaging
3.3 Environmental conditions
18 Instruction manual BFC
3.3.1 Air humidity and ambient temperature
3.3.2 Maximum floor load
3.3.3 Water composition
3.3.4 Working clearances
Page
Installation
20 Instruction manual BFC
3.4.1 Dimensions of the appliance
Plan and elevation of appliance (legend: see the table)
Instruction manual BFC 21
3.4.2 General and electrical specifications
22 Instruction manual BFC
3.4.3 Gas data
Instruction manual BFC 23
3.5 Installation diagram
Page
Instruction manual BFC 25
3.7 Water connections, Unvented
3.7.1 Cold water side
3.7.2 Hot water side
Circulation pipe
26 Instruction manual BFC
3.8 Gas connection
3.9 Air supply and flue 3.9.1 Introduction
3.9.2 Requirements for flue gas discharge materials
Page
28 Instruction manual BFC
3.9.3 Concentric connections
Practical example of concentric flue gas discharge
Page
Page
Instruction manual BFC 31
3.9.4 Parallel connections
Practical example of parallel flue gas discharge
32 Instruction manual BFC
3.10 Electrical connection
3.10.1 Introduction
Instruction manual BFC 33
3.10.2 Preparation
34 Instruction manual BFC
3.10.3 Connecting the mains voltage
3.10.4 Isolating transformer
Instruction manual BFC 35
3.10.5 Connecting a program-controlled pump
3.10.6 Connecting an extra ON mode switch ("Tank ON")
3.10.7 Connecting an extra error signal ('Alarm OUT' )
3.11 Checking the supply pressure and burner pressure
36 Instruction manual BFC
3.11.1 Preparation
3.11.2 Procedure to check pressures
Page
38 Instruction manual BFC
3.11.3 Adjusting the pressure
3.11.4 Finalising
4 Conversion to a different gas category
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5 Filling
42 Instruction manual BFC
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5.1 Filling the appliance 5.1.1 Filling unvented installations
5.1.2 Filling vented installations
6 Draining
44 Instruction manual BFC
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6.1 Draining unvented installations
6.2 Draining vented installations
Page
Page
Instruction manual BFC 47
7 The control panel
7.1 Introduction
7.2 Controls
7.3 Meaning of icons
7.4 Electronic controller ON/OFF switch
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7.6 PC connection
Instruction manual BFC 49
8 Status of the appliance
8.2.3
8.2.2
8.2.1
8.1 Introduction
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8.2.4
8.3 Error conditions
Instruction manual BFC 51
8.4 Service condition
Page
Instruction manual BFC 53
9 Starting and running
9.1 Introduction
9.2 Starting and running
9.3 The appliance's heating cycle
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Instruction manual BFC 55
10 Shutting down
10.1 Introduction
10.2 Shut the appliance down for a brief period ("OFF mode")
10.3 Electrically isolating the appliance
10.4 Shutting the appliance down for a long period
Page
Instruction manual BFC 57
11 Main menu
11.1 Notational convention for menu-related instructions
11.2 Switching on the "ON mode"
11.3 Setting the water temperature 11.3.1 Setting the water temperature via the SET POINT MENU
11.3.2 Setting water temperature during ON mode
58 Instruction manual BFC
11.5 Starting and stopping the week program
11.6 Changing the appliance's standard week program
11.6.1 Week program: setting the switch- on time
Instruction manual BFC 59
11.6.2 Week program: setting the switch- off time
11.6.3 Week program: setting the water temperature
11.6.4 Week program: setting the program- controlled pump
11.7 Adding times to a week program
60 Instruction manual BFC
11.8 Deleting times from a week program
Instruction manual BFC 61
11.9 Extra period
11.10 Programming an extra period
62 Instruction manual BFC
11.11 Settings
11.11.1 Setting menu language
Instruction manual BFC 63
11.11.2 Setting day and time
11.11.3 Displaying appliance specifications
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Instruction manual BFC 65
12 Service program
12.1 Introduction
12.2 Setting the hysteresis
12.3 Displaying the error history
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12.4 Displaying the appliance history
12.5 Display the selected appliance
12.6 Switching the pump on or off
12.7 Setting the service interval
13 Troubleshooting
13.1 Introduction
Instruction manual BFC 68
13.2 Troubleshooting table for general errors
Page
Instruction manual BFC 70
13.3 Displayed errors
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Instruction manual BFC 81
14 Maintenance frequency
14.1 Introduction
14.2 Determining service interval
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Instruction manual BFC 83
s
15 Performing maintenance
15.1 Introduction
15.2 Preparation for maintenance
15 s
Instruction manual BFC 85
s
15.3 Water-side maintenance 15.3.1 Introduction
15.3.2 Checking the anodes
15.3.3 Descaling and cleaning the tank
15 s
Instruction manual BFC 87
16 Warranty (certificate)
16.1 General warranty
16.2 Tank warranty
16.3 Conditions for Installation and use
88 Instruction manual BFC
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16.4 Exclusions
16.5 Scope of the warranty
16.6 Claims
16.7 Obligations of A.O. Smith
Page
Page
Page
Page
Instruction manual BFC 93
17.3 Week program card
Page
Instruction manual BFC 95
Index
A
B
C
D
0308 454 4.2 UK
Index
N
O
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