A.O. Smith Water Heater User Manual

A.o. smith water heater user manual
Table of Contents

Advertisement

Quick Links

Installation
Instructions
and Use & Care Guide
A.O.Smith
FVIR GAS WATER
HEATER
(FLAMMABLE
VAPOR
IGNITION
RESISTANT)
FOR SPACE HEATINGAND POTABLEWATER HEATINGONLY.
NOT FOR USE IN MOBILE HOMES.
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 IN THE U.S.A 0108
PARTNO. 186487-001

Advertisement

Table of Contents
loading

Summary of Contents for A.O. Smith Water Heater

  • Page 1: Water Heater Safety

    "WHAT TO DO IF YOU SMELL GAS" instructions. 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 PRINTED IN THE U.S.A 0108...
  • Page 2: Table Of Contents

    Water Heater Safety ... Safe Installation, Use and Service ... Safety Precautions Typical Installation Installing you Gas Water Heater ... Important Information About Your Water Heater ... Consumer Information Consumer Responsibilities Unpacking the Water Heater Location Requirements Site Locations Clearances and Accessibility...
  • Page 3: Safe Installation, Use And Service

    Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who install, use or service this water heater.
  • Page 4 Read instruction manual before Improper • Do not operate water heater if flood damaged. • Inspect and replace anode. • Install in location with drainage. • Fill tank with water before operation. • Be alert for thermal expansion.
  • Page 5: Typical Installation

    GET TO KNOW YOUR WATER HEATER Vent Pipe Draft hood Anode (Not Shown) Hot Water Outlet Insulation Gas Supply Piping Manual Gas Shut-off Valve Ground Joint Union Drip Leg (Sediment Trap) INSTALL IN ACCORDANCE WITH LOCAL CODES. DRIP LEG AS REQUIRED BY LOCAL CODES.
  • Page 6: Installing You Gas Water Heater

    Fuel Gas Code 248 CMR Section 2.00 and 5.00. A rating plate identifying your water heater can be found on the front of your water heater. When referring to your water heater, always have the information listed on the rating plate readily available. Retain your original receipt as proof of purchase.
  • Page 7: Location Requirements

    • Locate the water heater as close to the chimney or gas vent as practical. Consider the vent system piping and combustion air supply requirements when selecting the water heater location. The venting system must be able to run from the water heater to termination with minimal length and elbows.
  • Page 8: Clearances And Accessibility

    IMPORTANT: The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. Due to the normal corrosive action of water, the tank will eventually leak after an extended period of time.
  • Page 9: Gas Supply

    Call your dealer. NOTE: An odorant is added by the gas supplier to the gas used by this water heater. This odorant may fade over an extended period of time. Do not depend upon this odorant as an indication of leaking gas.
  • Page 10: Lp Gas Only

    By formula: Cu. Ft. Per Hr. Required= The gas input of the water heater is marked on the water heater data plate. The heating value of the gas (BTU/FT 3) may be determined...
  • Page 11: Combustion Air And Ventilation

    Combustion and ventilation air requirements are determined by the location of the water heater. The water heater may be located in either an open (unconfined) area or in a confined area or small enclosure such as a closet or small room.
  • Page 12: All Air From Inside The Building

    (MINIMUM 100 SQ. IN.) 1 SQUARE Single Opening Example: A water heater with an input rating of 50,000 BTUH using horizontal ducts would require each opening to have a minimum free area of 25 square inches. Minimum free area = 50,000 BTUH x 1 sq. in. / 2000 BTUH = 25 sq. in.
  • Page 13: Vent Pipe System

    This water heater uses a non-direct, single-pipe vent system to remove exhaust gases created by the burning of fossil fuels. Air for combustion is taken from the immediate water heater location or is ducted in from the outside (see VENT "Combustion Air Supply and Ventilation").
  • Page 14: Vent Pipe Size

    U.L. listed type B vent pipe according to the vent manufacturer's instructions and the terms of its listing. It must be connected to the water heater's draft hood by a listed vent connector or by directly originating at the draft hood opening.
  • Page 15: Water System Piping

    ENCLOSURE the water by mixing cold and hot water and are readily available for use. If installing the water heater in a closed water system, install an expansion tank in the cold water line as WITH specified under Closed System/Thermal Install a shut-off valve in the cold water inlet line.
  • Page 16: Closed System/Thermal Expansion

    The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, PRESSURE REDUCING VALVE CPVC, or polybutylene. This water heater must not be installed using iron piping or PVC water piping. H BYPASS D WATER •...
  • Page 17: Temperature & Pressure Relief Valve

    IMPORTANT: Only a new temperature and pressure relief valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater.
  • Page 18: Solar Installation

    Be sure to follow the manual(s) shipped with the air handler system. • This water heater is not to be used as a replacement for an existing boiler installation. • Do not use with piping that has been treated with chromates, boiler seal or other chemicals and do not add any chemicals to the water heater piping.
  • Page 19: Important Information About This Water Heater

    This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident. The new technology used in meeting these standards makes this product more sensitive to installation errors. Please review the following checklist and make any required installation upgrades or changes.
  • Page 20: Operating Your Water Heater

    Do not use this appliance if any part has been under water. Immediately service agency to replace a flooded water heater. Do not attempt to repair the unit! It must be replaced! DO NOT USE THIS APPLIANCE BEEN AN IGNITION OF VAPORS.
  • Page 21: Robertshaw Gas Valve/Thermostat - Lighting Instructions

    Do not touch vent. Doing so can result in burns. After successfully lighting the water heater, allow the unit to operate for 15 minutes and check the draft hood relief opening for proper draft (Figure 17). Make sure all other appliances in the area are operating and all doors are closed when performing the draft test.
  • Page 22: Burner Flames

    Read instruction temperature Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30°F (16.7 °C) higher or lower at the point of use such as, bathtubs, showers, sink, etc.
  • Page 23: Operational Conditions

    Awater heater may appear to be leaking when in fact the water is condensation. This usually happens when: A new water heater is filled with cold water for the first time. Burning gas produces water vapor in water heaters, par- ticularly high efficiency models where flue temperatures are lower.
  • Page 24: Routine Preventive Maintenance

    The water heater should be drained if being shut down during freezing temperatures. tank, perform the following steps: Turn off the gas to the water heater at the manual gas shut-off valve. Close the cold water inlet valve.
  • Page 25: Temperature And Pressure Relief Valve

    See Repair Parts Section for a list of available repair parts. Removing the Manifold/Burner Assembly Turn off the gas supply to the water heater at the manual gas shut-off valve. This valve is typically located beside the water heater. Note the position of the shut-off valve in the open/on position then proceed to turn it off (Figure 3).
  • Page 26: Replacing The Thermocouple

    Check the burner to see if it is dirty or clogged. The burner may be cleaned with soap and hot water (Figure 24). SCREWS, BURNER (BOTTOM VIEW) FIGURE 24. Replacing the Thermocouple Remove the manifold/burner assembly as directed previously. Remove the retainer clip from the back of the two piece wire connector and remove the two piece wire connector from the manifold door (Figure 25).
  • Page 27: External Inspection & Cleaning Of The Base-Ring Filter

    IMPORTANT: Do not operate the water heater if the door gasket does not create a seal between the manifold door and the combustion chamber.
  • Page 28: Piezoelectric Igniter System

    FROM ELECTRODE FIGURE 32. Testing the Igniter System Turn off the gas to the water heater at the manual gas shut-off valve. Watch the electrode tip while activating the igniter. A visible spark should jump from the electrode. To avoid shock, do not touch the burner or any metal part on the pilot or pilot assembly.
  • Page 29: Fvir System Operational Checklist

    Correct any leak found. Check the operation of the burner by following the lighting instructions on the front of the water heater. With the burner lit, check the gas control valve/ thermostat supply line, manifold tube and pilot tube connections for leaks.
  • Page 30 PROBLEM HIGH OPERATION COSTS Thermostat set too high Sediment or lime in tank Water heater too small for job Wrong piping connections Leaking faucets Gas leaks Wasted hot water Long runs of exposed piping Hot water piping in exposedwall Thermostat set too tow...
  • Page 31: Pilot Light Troubleshooting Flowchart

    Inecessary to remove the manifold door assembly to visually inspect the water I heater. Reference the Maintenance of your Water Heater section of this manual I for removal instructions. lie the igniter wire insulation burnt or show signs of discoloration?
  • Page 32: Repair Parts Illustration

    When ordering repair parts always give the following information: Model, serial, and product number Type of gas Item number Parts description Repair Parts List Item Parts Description DRAFT HOOD REDUCER RING - SOME MODELS FLUE BAFFLE HEAT TRAP/NIPPLES(COLD) HEAT TRAP/NIPPLES (HOT) - SOME MODELS COLD WATER DIP TUBE ANODE ROD...
  • Page 33: Listed Parts Kits And Illustrations

    Listed Parts Kits and Illustrations Item 12: Pilot/Pilot Tube Assembly kit, which contains the pilot assembly, thermocouple, igniter electrode and retainer clip (Natural Gas) Item 13: Pilot/Pilot Tube Assembly kit, which contains the pilot assembly, thermocouple, igniter electrode and retainer clip (L.R Gas) Item 14: Burner (Natural Gas/Low Nox)
  • Page 35: Warranty

    6-Year company approved appliances or equipment. Any accident to the water heater or any part thereof (including freezing, alteration of it, any operation of it in a modified form, any 6-Year operation water, or any damage caused by attempts to repair tank leaks or parts, will void this warranty.
  • Page 36: Warranty

    1.800.527.1953 or visit our website: www.hotwater.com. Replacement Parts may be ordered through servicers or distributors. Refer to your local Yellow Pages for where to call or contact A. O. Smith Water Heater Parts Fullfillment, 125 Southeast Parkway, Franklin, TN 37068, phone: 1.800.433.2545.

Table of Contents