A.O. Smith Water Heater User Manual

Installation Instructions and Use & Care Guide
A.O.Smith
FVIR GAS WATER HEATER
(FLAMMABLE VAPOR IGNITION RESISTANT)
FOR SPACEHEATINGAND POTABLEWATERHEATINGONLY.
NOT FOR USEIN MOBILEHOMES.
This water heater complies with ANSI Z21.10.1-current
edition regarding the accidental or unintended ignition of
flammable vapors, such as those emitted by gasoline.
Read and understand instruction
manual and safety messages
before installing, operating or
servicing this water heater.
Failure to follow instructions and
safety messages could result in
death or serious injury.
Instruction manual must remain
with water heater.
Safety Instructions • Care and Maintenance
• Installation • Troubleshooting
• Operation • Parts List
INSTALLER:
• AFFIX THESE INSTRUCTIONS TO OR ADJACENT
TO THE WATER HEATER.
OWNER:
• RETAIN THESE INSTRUCTIONS AND WARRANTY
FOR FUTURE REFERENCE. RETAIN THE
ORIGINAL RECEIPT AS PROOF OF PURCHASE.
WARNING: Gas leaks can not always be detected by
smell.
Gas suppliers recommend that you use a gas detector
approved by UL or CSA.
For more information, contact the your gas supplier.
If a gas leak is detected, follow the "WHAT TO DO IF YOU
SMELL GAS" instructions.
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
m Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your
building.
• Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
• If you cannot reach your gas
supplier, call the fire department.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED.
IF YOU ARE UNSUCCESSFU L, CONTACT RESIDENTIAL TECHNICALASSISTANCE AT 1-800-527-1953 OR WWW.HOTWATER.COM.
PRINTED INTHE U.S.A 0108 PARTNO. 186487-001

A.O. Smith Water Heater Specifications

General

Brand	A.O. Smith
Model	Water Heater
Category	Water Heater
Language	English

Summary

Water Heater Safety and Precautions

Hazard Symbols and Safety Definitions

Explains hazard symbols, levels (Danger, Warning, Caution), and defines key roles like technician and gas supplier.

Essential Safety Warnings and Hazards

Covers fire, explosion, scald, and carbon monoxide hazards with critical safety precautions.

Installation Requirements and Procedures

Typical Installation Diagram

Visual guide identifying key components of the gas water heater for installation.

Location Requirements and Site Selection

Guidelines for choosing an appropriate indoor location, clearances, and site preparation.

Gas Supply and Piping Installation

Proper installation of gas lines, shut-off valves, pressure testing, and LP gas safety considerations.

Combustion Air and Ventilation

Requirements for air supply for combustion and ventilation, including methods for confined spaces.

Water System Piping and Venting

Vent Pipe System Installation

Proper installation of the vent pipe system for safe exhaust gas removal and unit operation.

Water System Piping Installation

Connecting water lines, installing relief valves, expansion tanks, and tempering valves.

Operation and Maintenance

Lighting Instructions

Step-by-step guide for lighting the pilot and main burner, including control valve specifics.

Water Temperature Regulation and Safety

How to adjust thermostat settings and critical warnings about scald hazards from hot water.

Routine Preventive Maintenance

Annual inspection and cleaning procedures for optimal performance, safety, and longevity.

Troubleshooting and Parts

Troubleshooting Common Issues

Comprehensive chart and flowchart for diagnosing and resolving operational problems like no ignition or odors.

Repair Parts Identification

Illustration and list of water heater components and available replacement parts for ordering.

Warranty Information and Claims

Limited Residential Gas Warranty Terms

Details warranty coverage, conditions, exceptions, and owner responsibilities for the water heater.

Warranty Claim Procedure

Instructions for initiating a warranty claim, including required documentation and contact information.