A.O. Smith Water Heater User Manual

Page 2

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

TABLE OF CONTENTS

Water Heater Safety

......................................................................................................................................................................................... 1 -2

Safe Installation. Use and Service

...................................................................................................................................................................... 3

Safety Precautions

.......................................................................................................................................................................................... 3-4

Typical Installation

............................................................................................................................................................................................. 5

Installing you 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
LP Gas Only.......................................................................................................................................................................................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................................................................................................................................................17
T&P Relief Valve and Pipe Installation ..............................................................................................................................................17
Combination Space Heating/Potable Water System ................................................................................................................... 17-18
Solar Installation ................................................................................................................................................................................18

Important Information About this Water Heater

............................................................................................................................................... 19

Operating Your Water Heater

......................................................................................................................................................................20-25

White-Rodgers Gas Valve/Thernostat - Lighting Instructions............................................................................................................ 20

RobertShavv Gas Valve/Thermostat - Lighting Instructions ..............................................................................................................21
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

.............................................................................................................................................................. 25-29

Replacement Parts ............................................................................................................................................................................25
Removing the Burner from the Manifold/Burner Assembly .......................................................................................................... 25-26
Replacing the Thermocouple ............................................................................................................................................................ 26
Replacing the Pilot/Pilot Tube Assembly .......................................................................................................................................... 26
External Inspection & Cleaning of the Base-Ring Filter ....................................................................................................................27
Cleaning the Combustion Chamber and Flame-arrestor................................................................................................................... 27
Replacing the Manifold Burner/Assembly.....................................................................................................................................27-28
Piezoelectric Igniter System ..............................................................................................................................................................28

Testing the Igniter System ................................................................................................................................................................ 28

Removing and Replacing the Gas Control Valve/Thermostat ..................................................................................................... 28-29
FVIR System Operational Checklist ..................................................................................................................................................29

Troubleshooting Checklist

..........................................................................................................................................................................29-30

Pilot Light Troubleshooting Flowchart

............................................................................................................................................................31

Repair Parts Illustration

.................................................................................................................................................................................... 32

Listed Parts Kits and Illustrations.......................................................................................................................................................33

Notes

Warranty