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A.O. Smith
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Household Appliance
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Water Heater
A.O. Smith
SGS - 100, SGS - 80 service manual
1
1
110
110
Download
110 pages, 3.9 Mb
80
100
Installation
User and
Service Manual
Installation
User and
Service Manual
Contents
Main
Page
Instruction manual SGS 3
Read this manual carefully
Trademarks
Liability
More information
Page
Instruction manual SGS 5
Table of contents
1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
2 Working principle of the appliance- - - - - - - - - - - - - - - 13
3 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
6 Draining - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
8 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 57
9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 59
10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 61
11 Main menu - - - - - - - - - - - - - - - - - - - - - - - - - - - 63
12 Service program - - - - - - - - - - - - - - - - - - - - - - - - 71
Page
Page
Instruction manual SGS 9
1 Introduction
1.1 About the appliance
1.2 What to do if you smell gas
1.3 Regulations
10 Instruction manual SGS
1gis
1.4 Target groups
1.5 Maintenance
1.6 Forms of notation
Instruction manual SGS 11
1.7 Overview of this document
Page
Instruction manual SGS 13
2 Working principle of the appliance
2.1 Introduction
2.2 General working principle of the appliance
14 Instruction manual SGS
2.3 The appliance's heating cycle
Instruction manual SGS 15
2.4 Protection for the appliance 2.4.1 Introduction
16 Instruction manual SGS
2.4.2 Appliance water temperature protection
2.4.3 Water temperature protection for the storage tank
2.4.4 Gas valve
2.4.5 Fan
Instruction manual SGS 17
2.4.6 Pressure switch
2.4.7 Flame probe
2.5 Safety of the installation
2.5.1 Unvented installation
18 Instruction manual SGS
2.5.4 Protection for the solar heating system Drain-back tank
Fluid temperature
2.5.5 Safety of the solar heating system Expansion vessel
Expansion valve
3 Installation
3.1 Introduction
3.2 Packaging
3.3 Environmental conditions
20 Instruction manual SGS
3.3.1 Air humidity and ambient temperature
3.3.2 Maximum floor load
Maximum floor load
Maximum floor load of storage tank
Instruction manual SGS 21
3.3.4 Appliance working clearances
3.3.5 Storage tank working clearances
Installation
22 Instruction manual SGS
3.4 Technical specifications
IMD-0220 R4
3.4.1 Dimensions of the appliance
Plan and elevation of the appliance Legend See the table.
Instruction manual SGS 23
3.4.2 General and electrical specifications
24 Instruction manual SGS
3.4.3 Gas data
Page
26 Instruction manual SGS
3.6 Water connections, Vented
3.6.1 Cold water side
3.6.2 Hot water side
Instruction manual SGS 27
3.6.3 Circulation pipe
3.7 Water connections, Unvented
3.7.1 Cold water side
3.7.2 Hot water side
28 Instruction manual SGS
3.7.4 Condensation drainage
3.8 Gas connection
3.9 Solar heating system
3.10 Air supply and flue 3.10.1 Introduction
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Instruction manual SGS 31
3.10.3 Concentric connections
Page
Instruction manual SGS 33
3.10.4 Parallel connections
34 Instruction manual SGS
Practical example of parallel flue gas discharge
Instruction manual SGS 35
3.11 Electrical connection
3.11.1 Introduction
3.11.2 Preparation
Page
Instruction manual SGS 37
3.11.3 Connecting the mains voltage
3.11.4 Isolating transformer
3.11.5 Connecting a program-controlled pump
3.11.6 Connecting an extra ON mode switch ("Tank ON")
38 Instruction manual SGS
3.11.7 Connecting an extra error signal ('Alarm OUT' )
3.11.8 Connecting communication cable to solar heating system
3.12 Electrically connecting the solar heating system controller
3.12.1 Preparation
Instruction manual SGS 39
3.12.2 Connecting the mains power
3.12.3 Connecting pump station - modulating pump
3.12.4 Connecting solar collector
3.12.5 Connecting tank sensor
40 Instruction manual SGS
3.12.7 Connecting communication cable
3.12.8 Connecting extra head pump
3.12.9 Connecting Q/T sensor
Instruction manual SGS 41
3.13 Checking the supply pressure and burner pressure
3.13.1 Preparation
42 Instruction manual SGS
3.13.2 Procedure to check pressures
Instruction manual SGS 43
3.13.3 Adjusting the pressure
3.13.4 Finalising
Page
4 Conversion to a different gas category
4is
Page
48 Instruction manual SGS
5gis
5.2 Filling unvented installations
5.3 Filling vented installations
Instruction manual SGS 49
5.4 Filling solar heating system 5.4.1 Filling solar heating system with glycol
5gis
Page
52 Instruction manual SGS
6gis
6.2 Draining unvented installations
Instruction manual SGS 53
6.3 Draining vented installations
54 Instruction manual SGS
6gis
6.4 Draining solar heating system 6.4.1 Draining glycol-filled system
Instruction manual SGS 55
7 The control panel
7.1 Introduction
7.2 Controls
7.3 Meaning of icons
7.4 Electronic controller ON/OFF switch
7gis
7.5 Navigation buttons
7.6 PC connection
Instruction manual SGS 57
8 Status of the appliance
8.3.1
8.3
8.2.2
8.2.1
8gis
8.4 Error conditions
8.5 Service condition
Instruction manual SGS 59
9 Starting and running
9.1 Introduction
9.2 Starting the appliance
9.3 The appliance's heating cycle
9gis
Instruction manual SGS 61
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 SGS 63
11 Main menu
11.1 Introduction
11.2 Notational convention for menu-related instructions
11.3 Switching on the "ON mode"
11.4 Setting the water temperature 11.4.1 Setting the water temperature via the SET POINT MENU
64 Instruction manual SGS
11.4.2 Setting water temperature during ON mode
11.5 Week program
11.6 Starting and stopping the week program
11.7 Changing the appliance's standard week program
Instruction manual SGS 65
11.7.1 Week program: setting the switch- on time
11.7.2 Week program: setting the switch- off time
11.7.3 Week program: setting the water temperature
66 Instruction manual SGS
11.7.4 Week program: setting the program- controlled pump
11.8 Adding times to a week program
Instruction manual SGS 67
11.9 Deleting times from a week program
11.10 Extra period
68 Instruction manual SGS
11.11 Programming an extra period
Instruction manual SGS 69
11.12 Se ttings
11.12.1 Setting menu language
11.12.2 Setting day and time
70 Instruction manual SGS
11.12.3 Displaying appliance specifications
Instruction manual SGS 71
12 Service program
12.1 Introduction
12.2 Setting the hysteresis
12.3 Displaying the error history
12.4 Displaying the appliance history
12 is
12.5 Display the selected appliance
12.6 Setting the service interval
12.7 Setting legionella prevention
12.7.1 Switching legionella prevention on and off
Instruction manual SGS 73
12.8.1 Setting the drain-back tank
12.8.2 Setting the heating fluid type in the solar heating system
12.8.3 Setting threshold temperature of pump in solar heating system
12.8.4 Setting the solar limit temperature
12 is
12.8.7 Reading the energy contribution of the solar heating system
12.9 Setting the central heating configuration
Instruction manual SGS 75
13 Troubleshooting
13.1 Introduction
Instruction manual SGS 76
13.2 Troubleshooting table for general errors
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Instruction manual SGS 79
13.3 Troubleshooting table for displayed errors
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Instruction manual SGS 90
13.4 Displayed warnings
Instruction manual SGS 91
14 Maintenance frequency
14.1 Introduction
14.2 Determining service interval
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Instruction manual SGS 93
s
15 Performing maintenance
15.1 Introduction
15.2 Preparation for maintenance
15 s
Instruction manual SGS 95
s
15.3 Water-side maintenance 15.3.1 Introduction
15.3.2 Checking the anodes
15.3.3 Descaling and cleaning the appliance and storage tank
15 s
Instruction manual SGS 97
16 Warranty (certificate)
16.1 General warranty
16.2 Tank warranty
16.3 Conditions for Installation and use
98 Instruction manual SGS
16 gis
16.4 Exclusions
16.5 Scope of the warranty
16.6 Claims
16.7 Obligations of A.O. Smith
17 Appendices
Appendices
100 Instruction manual SGS
17 is
17.2 Menu structure
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Instruction manual SGS 105
17.4.1 Solar system electrical diagram legend
Page
Instruction manual SGS 107
17.5 Week program card
Page
Instruction manual SGS 109
Index
A
B
C
D
0308 853 1. UK
Index
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