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FVIR  System  Operational  Checklist                                 

1.  Manifold gasket properly sealed.
2.  Viewport not damaged or cracked.
3.  Flame-arrestor free of debris and undamaged.
4.  Manifold component block properly installed.

5.  No leaks at pilot and manifold connection.
6.  Manifold door screws securely tightened. 
7.  Depress the button on the thermal switch

TROUBLESHOOTING CHART

PROBLEM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

BURNER WILL NOT IGNITE

1.  Pilot not lit

2.  Thermostat set too low

3.  Main burner line clogged

4. Non-functioning 

thermostat

5.  Base-Ring Filter blocked with lint/

dust

6.  Heater installed in a confined area

7.  FVIR Flame Arrestor blocked with 

lint/dust.

1. Light 

pilot

2.  Turn temp. dial to desired temperature

3.  Clean, locate source and correct

4.  Test Gas Control Valve/Thermostat

5.  Clean filter, See “External Inspection & 

Cleaning of the Base-Ring Filter” section. 

6.  Provide fresh air ventilation

7.  Clean filter, See “Cleaning the Combustion 

Chamber and Flame-Arrestor” section. 

SMELLY WATER

1.  Sulfides in the water

1.  Replace the anode with a special anode

BURNER FLAME YELLOW-

LAZY

1.  Insufficient combustion air

2.  Low gas pressure

3.  Water heater flue or vent system 

blocked

4.  Main burner line clogged

5.  Base-Ring Filter blocked with lint/  

 dust

6.  Heater installed in a confined area

7.  FVIR Flame Arrestor blocked with 

lint/dust.

8.  Obstruction in main burner orifice

1.  Provide ventilation to water heater

2.  Check with gas utility company

3.  Clean, locate source and correct

4.  Clean, locate source and correct

5.  Clean filter, See “External Inspection & 

Cleaning of the Base-Ring Filter” section.

6.  Proper fresh air ventilation

7.  Clean filter, See “Cleaning the Combustion 

Chamber and Flame-Arrestor” section.

8.  Clean or replace orifice

PILOT WILL NOT LIGHT OR 

REMAIN LIT

1. Non-functioning 

igniter

2.  The thermal switch tripped

3.  Wire lead connection at thermal 

switch loose

4.  Thermopile connection loose

5.  Air in gas line

6.  Low gas pressure

7. No 

gas

8.  Dirt in gas lines

9. Cold 

drafts

10.  Thermostat 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 with 

lint/dust

15.  Flammable vapors incident, FVIR 

function actuated

16.  Base-Ring Filter blocked with lint/

dust

1.  Replace igniter pilot assembly

2.  See Pilot Light Troubleshooting Flowchart section

3.  Remove and reconnect the wire leads at 

thermal switch, confirm connections are tight 

and not loose

4.  Finger tighten; then 1/4 turn with wrench

5.  Bleed the air from the gas line

6.  Check with gas utility company

7.  Check with gas utility company

8.  Notify utility-install dirt trap in gas line

9.  Locate source and correct

10. Replace thermostat

11.  Clean, locate source and correct

12. Replace thermopile

13.  See maintenance section for inspection and  

  cleaning of flame arrester 

14.  Clean filter, See “Cleaning the Combustion 

Chamber and Flame-Arrestor” section.

15.  Replace water heater, eliminate flammable 

vapors source. Contact Technical Assistance.

16.  Clean filter, See “External Inspection & 

Cleaning of the Base-Ring Filter” section.

HIGH OPERATION COSTS

1.  Thermostat set too high

2.  Sediment or lime in tank

3.  Water heater too small for job

4.  Wrong piping connections

5. Leaking 

faucets

6. Gas 

leaks

7.  Wasted hot water

8.  Long runs of exposed piping

9.  Hot water piping in exposed wall

1.  Set temperature dial to lower setting

2.  Drain/flush-provide water treatment if needed

3.  Install adequate heater

4.  Correct piping-dip tube must be in cold inlet

5. Repair 

faucets

6.  Check with utility-repair at once

7. Advise 

customer

8. Insulate 

piping

9. Insulate 

piping

INSUFFICIENT HOT WATER 1.  Thermostat set too low

2.  Sediment or lime in tank

3.  Water heater too small

4.  Wrong piping connections

5. Leaking 

faucets

6.  Wasted hot water

7.  Long runs of exposed piping

8.  Hot water piping in outside wall

9.  Low gas pressure

1.  Turn temperature dial to desired setting

2.  Drain/flush-provide water treatment if needed

3.  Install adequate heater

4.  Correct piping-dip tube must be in cold inlet

5 Repair 

faucets

6. Advise 

customer

7. Insulate 

piping

8. Insulate 

piping

9.  Check with gas utility 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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