A.O. Smith 315456-002, GAHH-40, GAHH-50 installation instructions Table of Contents

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TABLE OF CONTENTS

 

Water Heater Safety

1-4

Safe Installation, Use and Service

3

Safety Precautions

3-4

Typical Installation

5

Installing Your Gas Water Heater

6-8

Important Information About Your Water Heater

6

Consumer Information

6

Consumer Responsibilities

6

Unpacking the Water Heater

6

Location Requirements

7

Site Locations

7

Clearances and Accessibility

8

State of California

8

Gas Supply

9-10

Gas Requirements

9

Gas Piping

9

Gas Pressure

9

Gas Pressure Testing

9

Gas Pipe Capacity Table

10

Combustion Air and Ventilation

11-15

Unconfined Space

11

Confined Space

11

All Air from Inside the Building

12

All Air from Outdoors

12

Louvers and Grilles

12-13

Vent Pipe System

13

Draft Hood Installation

13-14

Vent Pipe Size

14

Vent Connectors

14

Chimney Connection

14

Vertical Exhaust Gas Vent

14-15

Water System Piping

15-18

Piping Installation

15-16

Closed System/Thermal Expansion

16

Temperature & Pressure Relief Valve

16-17

T&P Relief Valve and Pipe Installation

17

Combination Space Heating/Potable Water System

17-18

Solar Installation

18

Electrical Connections and Wiring Diagram

18

Important Information About this Water Heater

19

Operating Your Water Heater

20-25

Gas Valve/Thermostat - Lighting Instructions

20

Checking the Draft

21

Burner Flames

22

Emergency Shutdown

22

Water Temperature Regulation

22-23

Operational Conditions

23-24

Routine Preventive Maintenance

24

Temperature and Pressure Relief Valve

25

Maintenance of Your Water Heater

25-27

Replacement Parts

25

Removing the Burner from the Manifold/Burner Assembly

25

Replacing the Flame Sense/Hot Surface Igniter Assembly

26

External Inspection & Cleaning of the Air Intake Chamber Louvers

26

Cleaning the Combustion Chamber andAir Diverter Assembly

26

Replacing the Manifold Burner/Assembly

26-27

Removing and Replacing the Gas Control Valve/Thermostat

27

FVIR System Operational Checklist

28

Troubleshooting Chart

28-29

Control Display Troubleshooting

30-33

Repair Parts Illustration

34

Listed Parts Kits and Illustrations

35

Notes

36-38

Warranty

39-40

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Contents Residential GAS Water Heaters Table of Contents Safe INSTALLATION, USE and Service Safety PrecautionsFire or Explosion Hazard Typical Installation GET to Know Your Water Heater GAS ModelsImportant Information About This Water Heater Installing Your GAS Water HeaterUnpacking the Water Heater Excessive Weight Hazard Consumer InformationCarbon Monoxide Poisoning Hazard Location RequirementsSite Location Clearances and Accessibility State of CaliforniaGas Requirements Gas Pressure TestingGAS Supply Gas PipingGas Pipe Capacity Table Confined Space Combustion AIR & VentilationUnconfined Space Minimum Btuh InputLouvers and Grilles All Air from Inside the BuildingAll Air from Outdoors Draft Hood Installation Vent Pipe SystemChimney Connection Vent ConnectorsVent Pipe Size Vertical Exhaust Gas VentPiping Installation Water System PipingTemperature and Pressure Relief Valve Closed System/Thermal ExpansionCombination Space Heating/Potable Water System Temperature & Pressure Relief ValveRelief Valve and Pipe Insulation Discharge LineElectrical Connections Solar InstallationWiring Diagram Installation Checklist Important Information about this Water HeaterOperating Your Water Heater Operating InstructionsBurn Hazard Water Heater OperationChecking the Draft Emergency Shut Down Water Temperature RegulationBurner Flames Condensation Safety Shut-offOperational Conditions Water Heater SoundsDraining and Flushing Routine Preventive MaintenancePowered Anode Operation Removing the Manifold/Burner Assembly Maintenance of Your Water HeaterReplacement Parts Removing the Burner from the Manifold/ Burner AssemblyReplacing the Manifold/Burner Assembly Replacing the Flame Sense/Hot Surface igniter AssemblyCleaning the Combustion Chamber and Air Diverter Assembly Replacing the Gas Valve Removing and Replacing the Gas Control Valve/ThermostatRemoving the Gas Control Valve/Thermostat Pressurized Combustion Chamber System Operational Checklist Troubleshooting ChartCont Control Display Troubleshooting Control Display Status Problem SolutionControl Display Status Problem Solution FV-SENSE and Open Flashing Troubleshooting Flowchart YESRepair Parts List Repair Parts IllustrationListed Parts Kits and Illustrations Page Page Page Limited Residential GAS Warranty YearImportant Information