John Wood Atmospheric Gas (ENERGY STAR) - NEW - Manuel (Page 2)

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TABLE OF CONTENTS
Water Heater Safety .......................................................................................................................................................................... 1 -2
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 ......................................................................................................................................................... 6-7
Site Locations .......................................................................................................................................................................... 7
Clearances and Accessibility ................................................................................................................................................... 8
Gas Supply ....................................................................................................................................................................................... 9-10
Gas
Requirements .................................................................................................................................................................... 9
Gas Piping ............................................................................................................................................................................... 9
Gas Pressure ........................................................................................................................................................................... 9
Gas Pressure Testing ............................................................................................................................................................... 9
LP Gas Only ........................................................................................................................................................................... 10
Combustion Air and Ventilation ................................................................................................................................................... 10-13
Unconfined
Space .................................................................................................................................................................. 10
Confined Space ......................................................................................................................................................................11
All Air from Inside the Building ................................................................................................................................................11
All Air from Outdoors ...............................................................................................................................................................11
Louvers and Grilles ................................................................................................................................................................ 12
Vent Pipe System .................................................................................................................................................................. 12
Draft Hood Installation ........................................................................................................................................................... 12
Vent Pipe Size ....................................................................................................................................................................... 12
Vent Connectors ............................................................................................................................................................... 12-13
Chimney Connection .............................................................................................................................................................. 13
Vertical Exhaust Gas Vent ..................................................................................................................................................... 13
Vent Size Verification ............................................................................................................................................................. 14
Water System Piping ..................................................................................................................................................................... 14-16
Piping Installation .............................................................................................................................................................. 14-15
Closed System/Thermal Expansion ....................................................................................................................................... 15
Temperature & Pressure Relief Valve .................................................................................................................................... 15
T&P Relief Valve and Pipe Insulation .................................................................................................................................... 16
Important Information About this Water Heater .............................................................................................................................. 17
Operating Your Water Heater ....................................................................................................................................................... 18-24
Lighting Instructions ............................................................................................................................................................... 18
Checking the Draft ................................................................................................................................................................. 19
Burner Flames ....................................................................................................................................................................... 19
Emergency Shutdown ............................................................................................................................................................ 19
Water Temperature Regulation ......................................................................................................................................... 19-20
Water Temperature Adjustment ............................................................................................................................................. 20
Operating Modes and Settings .............................................................................................................................................. 20
Electrical Connections/Wiring Diagram ................................................................................................................................. 21
Operational Conditions .......................................................................................................................................................... 22
Draining and Flushing ............................................................................................................................................................ 23
Routine Preventive Maintenance ........................................................................................................................................... 23
Temperature and Pressure Relief Valve ................................................................................................................................ 24
Maintenance of Your Water Heater .............................................................................................................................................. 24-28
Replacement Parts ................................................................................................................................................................ 24
Removing the Burner Manifold/Burner Assembly .................................................................................................................. 25
Replacing the Pilot/Igniter - Flame Sense Assembly ............................................................................................................. 25
External Inspection & Cleaning of the Base-Ring Filter ........................................................................................................ 25
Cleaning the Combustion Chamber and Flame-arrestor ....................................................................................................... 26
Replacing the Manifold Burner/Assembly ......................................................................................................................... 26-27
Igniter System ........................................................................................................................................................................ 27
Testing the Igniter System ..................................................................................................................................................... 27
Removing and Replacing the Gas Control Valve/Thermostat ............................................................................................... 27
FVIR System Operational Checklist ...................................................................................................................................... 28
Troubleshooting Checklist ........................................................................................................................................................... 28-29
Status Light Troubleshooting Flowchart .................................................................................................................................... 30-31
Sequence of Operation Chart ........................................................................................................................................................... 32
Repair Parts Illustration ................................................................................................................................................................ 33-34
Notes .... .......................................................................................................................................................................................... 35-36
Warranty .......................................................................................................................................................................................... 37-38