Table Of Contents; Introduction; Preparing For The Installation - A.O. Smith RESIDENTIAL GAS WATER HEATER Instruction Manual

SAFE INSTALLATION, USE AND SERVICE ........................... 2
GENERAL SAFETY ............................................................. 3-4
TABLE OF CONTENTS ........................................................... 5
INTRODUCTION ..................................................................... 5
Preparing for the Installation ............................................ 5
TYPICAL INSTALLATION .................................................... 6-8
LOCATING THE NEW WATER HEATER ........................... 9-11
Facts to Consider About Location .............................. 9-10
Insulation Blankets ......................................................... 10
Combustion Air and Ventilation for Appliances
Located in Unconfined Spaces ....................................... 10
Combustion Air and Ventilation for Appliances
Located in Confined Spaces ..................................... 10-11
INSTALLING THE WATER HEATER ............................... 12-24
Chemical Vapor Corrosion ............................................. 12
Water Piping ............................................................. 12-13
Temperature-Pressure Relief Valve ............................... 13
Gas Piping ...................................................................... 14
Sediment Traps .............................................................. 15
Filling the Water Heater ................................................. 15
Vent Pipe Assembly ....................................................... 15
Venting ........................................................................... 15
Vent Pipe Termination .................................................... 16
Planning the Vent System .............................................. 17
Condensate .............................................................. 17-18
Blower Assembly Installation .......................................... 18
Installation of Vent System ....................................... 18-20
Thank You for purchasing this water heater. Properly installed and
maintained, it should give you years of trouble free service.
Abbreviations Found In This Instruction Manual:
• CSA - Canadian Standards Association
• ANSI - American National Standards Institute
• NFPA - National Fire Protection Association
• ASME - American Society of Mechanical Engineers
• GAMA - Gas Appliance Manufacturer's Association
• UL - Underwriters Laboratories Inc.
This gas-fired water heater is design certified by Underwriters
Laboratories Inc. under American National Standard/CSA Standard
for Gas Water Heaters ANSI Z21.10.3 • CSA 4.3 (current edition).

PREPARING FOR THE INSTALLATION

1. Read the "General Safety" section, page 3 and 4 of this manual
first and then the entire manual carefully. If you don't follow the safety
rules, the water heater will not operate properly. It could cause
DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE.
This manual contains instructions for the installation, operation, and
maintenance of the gas-fired water heater. It also contains warnings
throughout the manual that you must read and be aware of. All
warnings and all instructions are essential to the proper operation of
the water heater and your safety. Since we cannot put everything
on the first few pages, READ THE ENTIRE MANUAL BEFORE
ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER.

TABLE OF CONTENTS

LIGHTING & OPERATING LABEL ........................................ 25
TEMPERATURE REGULATION ............................................ 26
FOR YOUR INFORMATION .................................................. 27
PERIODIC MAINTENANCE ............................................ 28-30
LEAKAGE CHECKPOINTS ................................................... 30
REPAIR PARTS ..................................................................... 31
TROUBLESHOOTING ..................................................... 32-34
WARRANTY .......................................................................... 35

INTRODUCTION

2. The installation must conform with these instructions and the
3. The water heater when installed must be grounded in accordance
4. If after reading this manual you have any questions or do not
5. Carefully plan the place where you are going to put the water
6. For California installation this water heater must be braced,
7. Massachusetts Code requires this water heater to be installed in
8. Complies with SCAQMD rule #1146 and districts having equivalent
5
Vent Attenuation Assembly Installation Instructions ....... 21-22
Vent Pipe Preparation .............................................. 23-24
Start Up Conditions
Smoke/Odor ........................................................... 27
Thermal Expansion ................................................. 27
Strange Sounds ...................................................... 27
Operational Conditions ................................................... 27
Smelly Water .......................................................... 27
"Air" in Hot Water Faucets ...................................... 27
High Temperature Shut Off System ........................ 27
Venting System Inspection ............................................. 28
Burner Operation and Inspection ................................... 28
Burner Cleaning ............................................................. 28
Housekeeping .......................................................... 28-29
Anode Rod Inspection .................................................... 29
Temperature-Pressure Relief Valve Operation .............. 29
Draining .......................................................................... 29
Service ........................................................................... 30
local code authority having jurisdiction. In the absence of local
codes, installations shall comply with the National Fuel Gas Code
(ANSI Z223.1/NFPA 54) or the Natural Gas and Propane
Installation Code (CAN/CSA B149.1) and the National Electrical
Code (NFPA 70), or the Canadian Electrical Code (C22.1). These
publications are available from The National Fire Protection
Association, 1 Batterymarch Park, Quincy, MA 02269.
with the local codes, or in the absence of local codes: the National
Electrical Code (NFPA 70) or the Canadian Electrical Code (C22.1).
understand any portion of the instructions, call the local gas utility
or the manufacturer whose name appears on the rating plate.
heater. Correct combustion, vent action, and vent pipe installation
are very important in preventing death from possible carbon
monoxide poisoning and fires, see Figures 1 and 2.
Examine the location to ensure the water heater complies with
the "Locating the New Water Heater" section in this manual.
anchored, or strapped to avoid falling or moving during an
earthquake. See instructions for correct installation procedures.
Instructions may be obtained from California Office of the State
Architect, 400 P Street, Sacramento, CA 95814.
accordance with Massachusetts 248-CMR 2.00: State Plumbing
Code and 248-CMR 5.00.
NOx requirements.