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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.  

Questions? Contact Residential Technical Assistance by referencing the phone number on the front of the Installation 
Instructions and Use & Care Guide.

Installation Checklist                                                         

Water Heater Location

Water heater location is important and can affect system 
performance. Please check the following:

   Installation area free of corrosive elements and flammable 

materials.

   Centrally located with the water piping system. 

Located as close to the gas piping and vent pipe 

system as possible.

   Located indoors and in a vertical position. Protected 

from freezing temperatures.

   Proper clearances from combustible surfaces 

maintained and not installed directly on a carpeted 

floor.

   Provisions made to protect the area from water 

damage. Metal drain pan installed and piped to an 

adequate drain.

   Sufficient room to service the water heater. See 

“Clearances and Accessibility” section of this 

manual.

   Water heater not located near an air moving device.

  Is the installed environment dirty (excessive amounts 

of lint, dirt, dust, etc.)?  If so, the flame arrestor 

located on the bottom of the water heater will need to 

be cleaned periodically.  Refer to the “Maintenance 

of your Water Heater” section of this manual for 

information on cleaning the flame arrestor. 

Combustion Air Supply and Ventilation

Check for sufficient combustion air supply.  Insufficient air 

for the combustion of gas will result in the flame becoming 

“lazy”, thereby allowing heat to build up in the combustion 

chamber.  This excessive heat will cause a thermal switch 

on the door assembly to trip. Is the water heater installed in 

a closet or other small, enclosed space? If so:

  Are there openings for make-up air to enter and 

exit the room/area? 

 

Are the openings of sufficient size?  Remember, 

if there are other gas-fired or air-consuming 

appliances in the same room, you need more 

make-up air.  Refer to the “Location Requirements” 

section of this water heater manual for specific 

requirements.

Fresh air not taken from areas that contain negative 

pressure producing devices such as exhaust fans, 

fireplaces, etc.

   Is there a furnace/air handler in the same room 

space as the water heater?  If so, has a return air 

duct system been attached that exits the room? 

If so, check for leaks on the air duct system. If no 

air duct system is present, correct immediately 

by contacting a local Heating, Ventilation, Air-

Conditioning & Refrigeration (HVAC-R) authorized 

service provider. 

   Fresh air supply free of corrosive elements and 

flammable vapors.

   Fresh air openings sized correctly with consideration 

given to the blocking effect of louvers and grilles.

   Ductwork is the same cross-sectional area as the  

openings.

Vent Pipe System

Check for proper drafting at the water heater draft hood. 

Refer to the “Checking the Draft” section of this manual for 

the test procedure. If the procedure shows insufficient draft 

is present, please check the following.

   Draft hood properly installed.

   Vent connectors securely fastened with screws and 

supported properly to maintain six inch clearance.

   Vent connector made of approved material and 

sized correctly.

   Vent pipe system installed according to all local 

and state codes or, in the absence of local and 

state codes, the “National Fuel Gas Code”, ANSI 

Z223.1(NFPA 54)-current edition.

   Flue baffle properly positioned in the flue tube.

   Check the vent system for restrictions/obstructions 

and check the vent termination height.  Refer to the 

“Air Supply and Ventilation” section of this water 

heater manual for specific requirements.

  

Recheck for sufficient combustion air supply.

Water System Piping

   Temperature and pressure relief valve properly 

installed with a discharge line run to an open drain 

and protected from freezing.

   All piping properly installed and free of leaks.

   Heater completely filled with water.

   Closed system pressure build-up devices installed.

   Mixing valve (when applicable) installed 

per manufacturer’s instructions (see “Water 

Temperature Regulation” section).

Gas Supply and Piping

  Gas type is the same as that listed on the water 

heater data plate.

   Gas line equipped with shut-off valve, union, and  

drip leg.

   Adequate pipe size and approved pipe material.

   An approved noncorrosive leak detection solution 

used to check all connections and fittings for 

possible gas leaks. If such a solution is not 

available, use a mixture of dish washing soap and 

water (one part soap to 15 parts water) or children’s 

soap bubble solution. Bubbles forming indicate a 

leak. Correct any leak found.

TEFLON 

®

 is a registered trademark of E.I. Du Pont De Nemours and 

Company.

Содержание GAS WATER HEATER

Страница 1: ...h 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 ca...

Страница 2: ...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 26 Lighting Instruction...

Страница 3: ...ty equivalent to a licensed tradesman in the fields of plumbing air supply venting and gas supply including a thorough understanding of the requirements of the National Fuel Gas Code as it relates to...

Страница 4: ...period of non use Read instruction manual before installing using or servicing water heater Fire or Explosion Harzard Hydrogen gas can be produced in a hot water system after a period of non use gener...

Страница 5: ...tat T Drain Valve U Manifold Burner Assembly V Flue W Metal Drain Pan X Piezo Igniter Y Base Ring Filter ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS TO VENT TERMINATION ON ROOF A B D F G H I W V...

Страница 6: ...future users of this water heater will need it for future reference Service to the FVIR System should only be performed by a qualified technician Examples of a qualified technician include licensed pl...

Страница 7: ...the area of the water heater leave the area immediately and call the fire department from a neighbor s home Do not attempt to clean the spill until all ignition sources have been extinguished Fire or...

Страница 8: ...ice used in conjunction with a piped drain pan These devices are available from some plumbing supply wholesalers and retailers and detect and react to leakage in various ways Sensors mounted in the dr...

Страница 9: ...an L P gas supply Do not connect an L P gas water heater to a natural gas supply Failure to follow these instructions can result in death explosion or carbon monoxide poisoning Explosion Hazard Gas R...

Страница 10: ...in the occurrence of a leak in the system the gas will settle at floor level Basements crawl spaces closets and areas below ground level will serve as pockets for the accumulation of gas Before lighti...

Страница 11: ...y a qualified technician using the installation instructions Examples of a qualified technican include gas technicians authorized gas company personel and authorized service persons Failure to so do c...

Страница 12: ...typical examples of each method Louvers and Grilles In calculating free area for ventilation and combustion air supply openings consideration must be given to the blocking effect of protection louver...

Страница 13: ...y CSA International this certification applies to the vent damper device only and does not mean they are certified for use on this water heater U L recognized fuel gas and carbon monoxide CO detectors...

Страница 14: ...y is clear and free of obstructions The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces Also consult local and state codes for proper chimney sizing and appl...

Страница 15: ...losed System Thermal Expansion 5 Install a shut off valve in the cold water inlet line It should be located close to the water heater and be easily accessible Know the location of this valve and how t...

Страница 16: ...y cause excessive restriction to water flow is not recommended Use only 95 5 tin antimony or other equivalent solder Any lead based solder must not be used Piping that has been treated with chromates...

Страница 17: ...tions If this water heater is to be used to supply both space heating and domestic potable drinking water the instructions listed below must be followed Be sure to follow the manual s shipped with the...

Страница 18: ...water heating appliances when used to supply potable water Some jurisdictions may require a backflow preventer in the incoming cold water line This may cause the temperature and pressure relief valve...

Страница 19: ...t contain negative pressure producing devices such as exhaust fans fireplaces etc Is there a furnace air handler in the same room space as the water heater If so has a return air duct system been atta...

Страница 20: ...e outer door If the Pilot Does Not Light 1 Wait 10 minutes before another lighting attempt If the pilot does not light the Igniter may not be sparking or the unit may not be getting gas or for a new i...

Страница 21: ...hnician or your gas supplier DANGER Hotter water increases the risk of scald injury Consult the instruction manual before changing temperature Refer to the Lighting Instructions in the Installation Ma...

Страница 22: ...49 C 60 C is recommended by most dishwasher manufacturers The thermostat is adjusted to the pilot position when it is shipped from the factory Water temperature can be regulated by moving the temperat...

Страница 23: ...the heated water may vary Operating Modes and Settings Standard Mode The controller adjusts the water heater to maintain the temperature set by the user Vacation Setting The Vacation setting VAC sets...

Страница 24: ...ater conditioning company to successfully eliminate all water odor problems Artificially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium i...

Страница 25: ...water heater drain valve and allow all of the water to drain from the tank Flush the tank with water as needed to remove sediment 6 Close the drain valve refill the tank and restart the water heater...

Страница 26: ...d billed accordingly When ordering replacement parts always have the following information ready 1 model serial and product number 2 type of gas 3 item number 4 parts description See Repair Parts Sect...

Страница 27: ...ILOT THERMOPILE ASSEMBLY PILOT THERMOPILE ASSEMBLY IGNITER CONNECTOR THERMAL SWITCH CONNECTORS PILOT THERMOPILE THERMOPILE CONNECTOR WHITE WIRE RED WIRE PILOT TUBE NOT SHOWN FOR CLARITY FIGURE 26 7 Ro...

Страница 28: ...ort if glass is missing or damaged removed Replace door gasket if damaged Failure to follow these instructions can result in death explosion or fire 1 Check the door gasket for damage or imbedded debr...

Страница 29: ...Figure 19A 2 Turn off the gas at the manual shut off valve on the gas supply pipe Figure 3 3 Drain the water heater Refer to the section of Draining and Flushing and follow the procedure 4 Disconnect...

Страница 30: ...ostat temperature limit was ex ceeded Status light will blink 4 flashes 11 Pilot line or orifice clogged 12 Non functioning thermopile 13 Air for combustion obstructed 14 FVIR Flame Arrestor blocked w...

Страница 31: ...section 5 Clean filter See Cleaning the Combustion Chamber and Flame Arrestor section SMOKING AND CARBON FORMATION SOOTING 1 Insufficient combustion air 2 Low gas pressure 3 Water heater flue or vent...

Страница 32: ...on if the return air duct is in the same location Correct size of openings to allow sufficient air NO YES YES NO Section C Pilot light will not remain lit Complete this section after completing Sectio...

Страница 33: ...water heater has been operating but has stopped and will not re light check the flame arrestor for signs of high temperature blue or black discoloration indicating a flammable vapor incident If you s...

Страница 34: ...mostat 8 FLASHES This condition only appears if the gas control temperature knob has been turned off and the thermopile continued to produce electric power This condition can occur if the thermopile d...

Страница 35: ...35 NOTES...

Страница 36: ...1 DRAFT HOOD 2 HEAT TRAP COLD SOME MODELS 3 HEAT TRAP HOT SOME MODELS 4 COLD WATER DIP TUBE 5 ANODE ROD 6 TEMPERATURE PRESSURE RELIEF VALVE LOCATED TOP OR SIDE 7 DRAIN VALVE 8 GAS CONTROL VALVE THERM...

Страница 37: ...12B Burner L P Gas Item 13A Manifold Burner Assembly contains the door gasket manifold tube pilot thermopile assembly manifold component block thermal switch and burner Natural Gas Low Nox Item 13B M...

Страница 38: ...on location in the United States its territories or possessions and Canada sized in accordance with proper sizing techniques for residential water heaters bearing a rating plate which has not been alt...

Страница 39: ...M DOES NOT CONSTITUTE PROOF OF PURCHASE OR PROOF OF INSTALLATION DISCLAIMERS NO EXPRESSED WARRANTY HAS BEEN OR WILL BE MADE ON BEHALF OF THE WARRANTOR WITH RESPECT TO THE MERCHANTABILITY OF THE HEATER...

Страница 40: ...40 Copyright 2010 A O Smith Corporation All rights reserved...

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