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A.O. Smith
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Household Appliance
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Water Heater
A.O. Smith
GWV - 120, GWV - 150, GWV - 200
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Introduction
12
Instruction manual GWV
1
gis
Contents
Main
V
Page
Instruction manual GWV 3
Read this manual carefully
Trademarks
Liability
More information
Page
Table of contents
9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 55
10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 59
11 Main menu - - - - - - - - - - - - - - - - - - - - - - - - - - - 61
12 Service program - - - - - - - - - - - - - - - - - - - - - - - - 69
13 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - 73
Page
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Instruction manual GWV 9
1 Introduction
1.1 About the appliance
1.2 What to do if you smell gas
1.3 Regulations
10 Instruction manual GWV
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1.4 Target groups
1.5 Maintenance
1.6 Forms of notation
Instruction manual GWV 11
1.7 Overview of this document
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Working principle of the appliance
Cut-away view of the appliance
Instruction manual GWV 15
2.3 The appliance's heating cycle
16 Instruction manual GWV
2.4 Protection for the appliance 2.4.1 Introduction
2.4.2 Water temperature protection
2.4.3 Gas control
2.4.4 Fan
Instruction manual GWV 17
2.4.6 Flame probe
2.4.7 Flow-through switch
18 Instruction manual GWV
2.5 Safety of the instal- lation
2.5.1 Unvented installation
2.5.2 Vented installation
2.5.3 Inlet combination and pressure-reducing valve
3 Installation
3.1 Introduction
3.2 Packaging
20 Instruction manual GWV
3.3 Environmental conditions
3.3.1 Air humidity and ambient temperature
3.3.2 Maximum floor loading
Instruction manual GWV 21
3.3.3 Water composition
3.3.4 Working clearances
Installation
22 Instruction manual GWV
3.4 Technical specifica- tions
I
3.4.1 Dimensions of the appliance
Plan and elevation of the appliance
Instruction manual GWV 23
3.4.2 General and electrical specifications
24 Instruction manual GWV
3.4.3 Gas data
Instruction manual GWV 25
3.5 Installation diagram
7 R2
Vented
IMD-
26 Instruction manual GWV
3.6 Water connections, Vented
3.6.1 Cold water side
3.6.2 Hot water side
3.6.3 Circulation pipe
Page
28 Instruction manual GWV
3.7 Water connections, Unvented
3.7.1 Cold water side
3.7.2 Hot water side
3.7.3 Circulation pipe
Page
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Instruction manual GWV 31
3.9.3 Parallel connections
3.9.4 Specifications
Page
Instruction manual GWV 33
3.10 Electrical connection
3.10.1 Introduction
3.10.2 Preparation
Page
Instruction manual GWV 35
3.10.3 Connecting the mains voltage
3.10.4 Connecting a program-controlled pump
36 Instruction manual GWV
3.10.5 Connecting an external on/off switch
3.10.6 Connecting an alarm signal ('Alarm OUT')
3.10.7 Sensor wiring
3.11 Checking the supply pressure and burner pressure
Instruction manual GWV 37
3.11.1 Preparation
3.11.2 Procedure for checking pressures
38 Instruction manual GWV
3.11.3 Adjusting the pressure
Instruction manual GWV 39
3.11.4 Finalising
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4 Conversion to a different gas category
Page
Instruction manual GWV 43
5 Filling
R2
5.1 Installation diagram
IMD-
0
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5.2 Filling unvented installations
Instruction manual GWV 45
5.3 Filling vented instal- lations
Page
Instruction manual GWV 47
6 Draining
R2
6.1 Installation diagram
IMD-
0
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6.2 Draining unvented installations
Instruction manual GWV 49
6.3 Draining vented installations
Page
Instruction manual GWV 51
7 The control panel
7.1 Introduction
7.2 Operation
7.3 Meaning of icons
7.4 Electronic controller ON/OFF switch
7gis
7.6 PC connection
Instruction manual GWV 53
8 Status of the appliance
8.2.3
8.2.2
8.2.1
8.1 Introduction
8gis
8.2.4
8.3 Error conditions
8.4 Service condition
8.5 Warning
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 GWV 59
10 Shutting down
10.1 Introduction
10.2 Shutting the installation down for a brief period ("OFF mode")
10.3 Isolating the appliance from the mains
10.4 Shutting the appliance and storage tank down for a long period
Page
Instruction manual GWV 61
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
62 Instruction manual GWV
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 GWV 63
11.7.1 Week program: setting the switch- on time
11.7.2 Week program: setting switch-off time
11.7.3 Week program: setting the water temperature
64 Instruction manual GWV
11.7.4 Week program: setting the program- controlled pump
11.8 Adding times to a week program
Instruction manual GWV 65
11.9 Deleting times from a week program
11.10 Extra period
66 Instruction manual GWV
11.11 Programming an extra period
11.11.1 Setting the switch-on time
11.11.2 Setting the switch-off time
11.11.3 Setting the water temperature
Instruction manual GWV 67
11.12 Se ttings
11.12.1 Setting menu language
11.12.2 Setting day and time
68 Instruction manual GWV
11.12.3 Displaying appliance specifications
Instruction manual GWV 69
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 Displaying the appliance selection
12.6 Switching the pump on or off
12.7 Setting the service interval
12.8 Setting the display contrast
Instruction manual GWV 71
12.12 Setting the pump running-on time
Page
Instruction manual GWV 73
13 Troubleshooting
13.1 Introduction
Instruction manual GWV 74
13.2 Troubleshooting table for general errors
Page
Instruction manual GWV 76
13.3 Troubleshooting table for displayed errors
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Instruction manual GWV 85
13.4 Warnings
Page
Instruction manual GWV 87
14 Maintenance frequency
14.1 Introduction
14.2 Determining service interval
Page
Instruction manual GWV 89
s
15 Performing maintenance
15.1 Introduction
15.2 Preparation for maintenance
15 s
Instruction manual GWV 91
s
15.3 Water-side mainte- nance 15.3.1 Introduction
15.3.2 Checking the anodes
15.3.3 Descaling and cleaning the storage tank
15 s
Instruction manual GWV 93
16 Warranty (certificate)
16.1 General warranty
16.2 Appliance warranty
16.3 Conditions for Instal- lation and use
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Appendices
96 Instruction manual GWV
17 is
0308191 R1
16
15
11
Page
Page
Instruction manual GWV 99
17.3 Week program card
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Index
