A.O. Smith 120 through 250 Series Manuals

Manuals and User Guides for A.O. Smith 120 through 250 Series. We have 6 A.O. Smith 120 through 250 Series manuals available for free PDF download: Instruction Manual, Installation, User And Service Manual, Service Handbook

A.O. Smith 120 through 250 Series Installation, User And Service Manual (104 pages)

High Efficient Condensing Water Heater

Brand: A.O. Smith | Category: Water Heater | Size: 2.74 MB

Table of Contents
7
1 Introduction

11
- About the Water Heater
  11
- What to Do if You Smell Gas
  11
- Regulations
  11
- Target Groups
  12
- Maintenance
  13
- Notation Conventions
  13
- Overview of this Document
  14
2 Working Principle of the Water Heater

15
3 Installation

19
- Introduction
  19
- Packaging
  19
- Ambient Conditions
  19
- Technical Specifications
  21
- Installation Diagram
  27
- Unvented Water Connections
  28
- Vented Water Connections
  29
- Gas Connection
  29
- Air Supply and Chimney Flue Discharge
  30
- Specifications
  33
- Electrical Connection
  35
- Isolating Transformer
  37
- Check the Supply Pressure, Gas Controller Pressure, CO 2 Value and Switching Pressure
  38
4 Conversion to a Different Gas Category

47
- Introduction
  47
5 Filling

49
- Filling Unvented Installations
  50
- Filling Vented Installations
  50
6 Draining

51
- Draining Unvented Installations
  52
- Draining Vented Installations
  52
7 The Control Panel

53
- Introduction
  53
- Control
  53
- Explanation of Icons
  53
- ON/OFF Switch on Controller
  53
- Navigation Buttons
  53
- PC Connection
  54
- 8 Status of the Water Heater
  
  55
  - Introduction
    55
  - Operating Modes
    55
  - Error Conditions
    56
  - Service Condition
    56
  - Anode Warning
    57
- 9 Starting the Water Heater
  
  59
  - Introduction
    59
  - Starting the Appliance
    59
  - The Appliance's Heating Cycle
    59
10 Shutting down

61
11 Main Menu

63
- Introduction
  63
- Notation Convention for Menu-Related Instructions
  63
- Switching to "ON Mode
  63
- Setting the Water Temperature
  63
- Week Program
  64
- Starting and Stopping the Week Program
  64
- Changing the Appliance's Standard Week Program
  64
- Adding Times to a Week Program
  66
- Deleting Times from a Week Program
  67
- Extra Period
  68
- Settings
  69
12 Service Program

71
- Introduction
  71
- Setting the Hysteresis
  71
- Displaying the Error History
  71
- Displaying the Water Heater History
  71
- Display the Selected Water Heater
  72
- Switching the Pump on or off
  72
- Setting the Service Interval
  72
- Service Mode
  72
- Setting Legionella Prevention
  73
13 Errors

75
14 Service Interval

87
- Introduction
  87
- Determining Service Interval
  87
15 Performing Maintenance

89
- Introduction
  89
- Preparation for Maintenance
  89
- Water-Side Maintenance
  90
- Gas-Side Maintenance
  91
- Finalizing Maintenance
  92
16 Warranty (Certificate)

93
- General Warranty
  93
- Tank Warranty
  93
- Conditions for Installation and Use
  93
- Exclusions
  94
- Scope of the Warranty
  94
- Claims
  94
- Obligations of A.o.smith
  94
17 Appendices

95
- Introduction
  95
- Menu Structure
  96
- Electrical Diagram
  98
- Declaration of Conformity
  100
- Week Program Card
  101

A.O. Smith 120 through 250 Series Instruction Manual (120 pages)

INDUSTRIAL ELECTRIC WATER HEATERS

Brand: A.O. Smith | Category: Water Heater | Size: 15.47 MB

Table of Contents
2
Safe Installation, Use, and Service
3
Important Definitions
3
General Safety Information
4
Limiting the Risk of Scalding
4
Precautions
4
Hydrogen Gas (Flammable)
4
Hazard Messages
4
Introduction
7
Preparing for the Installation
7
Features and Components
8
Model and Rating
10
Installation Considerations
11
Rough-In Dimensions
11
Locating the Water Heater
11
Installing the Water Heater
12
Required Ability
12
General
12
Contaminated Water
12
Circulating Pump
12
Insulation Blankets
12
Temperature-Pressure Relief Valve
13
Water Line Connections
13
Closed Water Systems
13
Thermal Expansion
14
Electrical
14
Amperage Table/Over-Current Protection
15
Heater Circuits - Electronic Control Models
15
Control Circuit - Electronic Control Models
15
Sequence of Operation
16
Start up
17
Filling the Water Heater
17
Initial Start up
17
Draining the Water Heater
17
Temperature Regulation
18
Limiting the Risk of Scalding
18
High Temperature Limit Controls (ECO)
18
Thermostat Controls
18
Control System Operation
20
Control System Features
20
Control System Navigation
20
Home Screen
20
Temperatures Menus
23
Economy Mode Setup Menu
26
Economy Mode Settings
27
Alarm Output Setup Menu
30
Display Settings Menu
31
Heater Information Menu
31
Current Fault / Alert Menu
32
Fault History Menu
32
Fault Occurrence Menu
33
Restore Factory Defaults Menu
33
Maintenance
34
Draining and Flushing
34
Anode Maintenance
34
Sediment Removal
35
Lime Scale Removal
35
Temperature-Pressure Relief Valve Test
36
Troubleshooting
37
Checklist
37
Checking for Leaks
38
Diagrams
39
Wiring Diagrams
39
Piping Diagrams
48
Manifold Kits
56

A.O. Smith 120 through 250 Series Instruction Manual (52 pages)

COMMERCIAL ELECTRIC WATER HEATERS

Brand: A.O. Smith | Category: Water Heater | Size: 1.62 MB

Safe Installation, Use, and Service
2
Important Definitions
2
General Safety Information
3
Precautions
3
Hydrogen Gas (Flammable)
3
Table of Contents
4
Introduction
5
Preparing for the Installation
5
Dimensions and Capacities Data
6
Approvals
7
Model and Rating
7
Features and Components
8
Locating the New Water Heater
10
Facts to Consider about the Location
10
Installation
11
Required Ability
11
General
11
Contaminated Water
11
Circulating Pump
11
Insulation Blankets
11
Temperature-Pressure Relief Valve
11
Water Line Connections
12
Closed Water Systems
12
Thermal Expansion
12
Electrical
13
General
13
Amperage Table/Overcurrent Protection
14
Heater Circuits - Electronic Control Models
14
Control Circuit - Electronic Control Models
14
Sequence of Operation
14
Wiring Diagrams
16
Conversion to Single Phase
18
Conversion to Three Phase
18
Conversion to Single Phase
20
Conversion to Three Phase
20
Operation
21
General
21
Filling the Water Heater
21
Initial Start up
21
Draining the Water Heater
21
Temperature Regulation
22
High Temperature Limit Controls (ECO)
22
Thermostat Controls
22
Thermostat Settings - Surface Mount Control
22
THERMOSTAT SETTINGS - Electronic Controls
23
Electronic Control Models Operation
24
Control System Features
24
Control System Navigation
24
The Desktop Screen
24
Temperatures Menu
26
Temperature Settings
27
Heater Status Menu
28
Economy Mode Setup Menu
28
Economy Mode Settings
30
Economy Mode Settings
31
Alarm Output Setup Menu
33
Display Settings Menu
33
Heater Information Menu
33
Current Fault / Alert Menu
34
Fault History Menu
34
Fault Occurrence Menu
34
Restore Factory Defaults Menu
35
Maintenance
35
General
35
Anode Rod Inspection
35
FLUSHING the Water Heater
36
Sediment Removal
36
Lime Scale Removal
36
Troubleshooting Checklist
37
Checklist
37
Replacement Parts
37
Leakage Checkpoints
37
Piping Diagrams
39

A.O. Smith 120 through 250 Series Instruction Manual (40 pages)

RESIDENTIAL GAS WATER HEATERS

Brand: A.O. Smith | Category: Water Heater | Size: 4.15 MB

Safe Installation, Use and Service
2
Approvals
2
General Safety Information
3
Table of Contents
5
Introduction
5
Qualified Installer or Service Agency
5
Preparing for the Installation
5
Installation Requirements for the Commonwealth of Massachusetts
6
Typical Installation
7
Mixing Valves
9
Locating the New Water Heater
10
Facts to Consider about Location
10
Insulation Blankets
11
Air Requirements
11
Unconfined Space
12
Confined Space
12
Fresh Air Openings for Confined Spaces
12
Outdoor Air through Two Openings
12
Outdoor Air through One Opening
12
Outdoor Air through Two Horizontal Ducts
13
Outdoor Air through Two Vertical Ducts
13
Air from Other Indoor Spaces
13
Installing the New Water Heater
14
Chemical Vapor Corrosion
14
Water Piping
14
Space Heating & Potable Water System
14
Closed Water Systems
14
Thermal Expansion
15
Temperature-Pressure Relief Valve
15
High Altitude Installation
16
Gas Piping
16
Sediment Traps
17
Filling the Water Heater
17
Vent Pipe Assembly
18
Venting
18
Vent Pipe Termination
19
Planning the Vent System
20
Polypropylene Installations
21
Condensate
21
Blower Assembly Installation
22
Installation of Vent System
22
Vent Terminal Installation, Sidewall
22
Installation of Vent System, Sidewall
24
Installation of Vertical Vent System
24
Vent Pipe Preparation
25
Lighting & Operating Label
27
Temperature Regulation
28
For Your Information
29
Start up Conditions
29
Operational Conditions
29
Periodic Maintenance
29
Venting System Inspection
29
Burner Operation and Inspection
30
Burner Cleaning
30
Housekeeping
30
Anode Rod Inspection
30
Temperature-Pressure Relief Valve Test
31
Draining and Flushing
31
Service
32
Leakage Checkpoints
32
Repair Parts List
33
Troubleshooting Guidelines
34
Notes
37

A.O. Smith 120 through 250 Series Service Handbook (40 pages)

COMMERCIAL GAS WATER HEATERS

Brand: A.O. Smith | Category: Heater | Size: 4.16 MB

Table of Contents
2
Introduction
3
- Qualifications
  3
- Service Warning
  3
- Service Reminder
  3
Requirements
4
- Instruction Manual
  4
- Tools Required
  4
- Tools Optional
  4
Installation Considerations
5
Operation and Service
12
- Sequence of Operation
  12
- Electrical Sequence
  13
- Wiring Diagram
  14
- Operating Sequence - Flow Chart
  15
- Gas Control Valve
  16
Gas Control Valve/Burner Area View
18
Blower Prover Switch - Settings
19
Thermostat and Ignition Control Board View
20
White Rodgers Integrated Control - Thermostat
21
White Rodgers Ignition Control Board
21
Pre-Service Checklist
22
Troubleshooting
23
Ignition Control Board: Error Codes
23
- Flash
  23
- Flashes
  23
- Flashes
  24
- Flashes
  25
- Continuous Flash
  25
- Continuous on
  25
Integrated Heater Control: Display Lights
26
Test 1: 120 VAC to Heater Check
27
Test 2: Polarity Check
28
Test 3: Continuity Check of High Limit (ECO)
29
Test 4: Upper Temperature Probe Continuity Check
30
Test 5: Calling for Heat - no Blower Operation
31
Test 6: Blower On, no Ignition
32
Test 7: Blower On, Blower Prover Switch Closed, no Igniter Operation
33
Test 8: Igniter Heats, no Main Burner
34
Test 9: Igniter Heats, no Main Burner
35
Test 10: Main Burner Ignition for Less than Five Seconds
36
Test 11: Water Heater Shutting off below Setting
37

A.O. Smith 120 through 250 Series Service Handbook (74 pages)

Series 960 through 967, 970 and 973

Brand: A.O. Smith | Category: Water Heater | Size: 8.15 MB

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A.O. Smith 120 through 250 Series Manuals

A.O. Smith 120 through 250 Series Installation, User And Service Manual (104 pages)

Table of Contents

1 Introduction

2 Working Principle of the Water Heater

3 Installation

4 Conversion to a Different Gas Category

5 Filling

6 Draining

7 The Control Panel

8 Status of the Water Heater

9 Starting the Water Heater

10 Shutting down

11 Main Menu

12 Service Program

13 Errors

14 Service Interval

15 Performing Maintenance

16 Warranty (Certificate)

17 Appendices

A.O. Smith 120 through 250 Series Instruction Manual (120 pages)

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