320386-001 - AO Smith Water Heaters

More documents

Recommendations

Info

FVIR System Operational Checklist1. 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 switchTROUBLESHOOTING CHARTPROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTIONBURNER WILL NOT IGNITE 1. Pilot not lit1. Light pilot2. Thermostat set too low2. Turn temp. dial to desired temperature3. Main burner line clogged3. Clean, locate source and correct4. Non-functioning thermostat 4. Test Gas Control Valve/Thermostat5. Base-Ring Filter blocked with lint/ 5. Clean filter, See “External Inspection &dustCleaning of the Base-Ring Filter” section.6. Heater installed in a confined area7. FVIR Flame Arrestor blocked withlint/dust.306. Provide fresh air ventilation7. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.SMELLY WATER 1. Sulfides in the water 1. Replace the anode with a special anodeBURNER FLAME YELLOW-LAZYPILOT WILL NOT LIGHT ORREMAIN LITHIGH OPERATION COSTS1. Insufficient combustion air2. Low gas pressure3. Water heater flue or vent systemblocked4. Main burner line clogged5. Base-Ring Filter blocked with lint/dust6. Heater installed in a confined area7. FVIR Flame Arrestor blocked withlint/dust.8. Obstruction in main burner orifice1. Non-functioning igniter2. The thermal switch tripped3. Wire lead connection at thermalswitch loose4. Thermopile connection loose5. Air in gas line6. Low gas pressure7. No gas8. Dirt in gas lines9. Cold drafts10. Thermostat temperature limit was exceeded.Status light will blink 4 flashes.11. Pilot line or orifice clogged12. Non-functioning thermopile13. Air for combustion obstructed14. FVIR Flame Arrestor blocked withlint/dust15. Flammable vapors incident, FVIRfunction actuated16. Base-Ring Filter blocked with lint/dust1. Thermostat set too high2. Sediment or lime in tank3. Water heater too small for job4. Wrong piping connections5. Leaking faucets6. Gas leaks7. Wasted hot water8. Long runs of exposed piping9. Hot water piping in exposed wallINSUFFICIENT HOT WATER 1. Thermostat set too low2. Sediment or lime in tank3. Water heater too small4. Wrong piping connections5. Leaking faucets6. Wasted hot water7. Long runs of exposed piping8. Hot water piping in outside wall9. Low gas pressure1. Provide ventilation to water heater2. Check with gas utility company3. Clean, locate source and correct4. Clean, locate source and correct5. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.6. Proper fresh air ventilation7. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.8. Clean or replace orifice1. Replace igniter pilot assembly2. See Pilot Light Troubleshooting Flowchart section3. Remove and reconnect the wire leads atthermal switch, confirm connections are tightand not loose4. Finger tighten; then 1/4 turn with wrench5. Bleed the air from the gas line6. Check with gas utility company7. Check with gas utility company8. Notify utility-install dirt trap in gas line9. Locate source and correct10. Replace thermostat11. Clean, locate source and correct12. Replace thermopile13. See maintenance section for inspection andcleaning of flame arrester14. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.15. Replace water heater, eliminate flammablevapors source. Contact Technical Assistance.16. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.1. Set temperature dial to lower setting2. Drain/flush-provide water treatment if needed3. Install adequate heater4. Correct piping-dip tube must be in cold inlet5. Repair faucets6. Check with utility-repair at once7. Advise customer8. Insulate piping9. Insulate piping1. Turn temperature dial to desired setting2. Drain/flush-provide water treatment if needed3. Install adequate heater4. Correct piping-dip tube must be in cold inlet5 Repair faucets6. Advise customer7. Insulate piping8. Insulate piping9. Check with gas utility company
PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION1. Insufficient combustion airSLOW HOT WATERRECOVERYDRIP FROM RELIEF VALVETHERMOSTAT FAILS TOSHUT-OFFCOMBUSTION ODORSSMOKING AND CARBONFORMATION (SOOTING)2. Water heater flue or vent systemblocked3. Low gas pressure4. Improper calibration5. Base-Ring Filter blocked with lint/dust6. FVIR Flame Arrestor blocked withlint/dust.1. Excessive water pressure2. Heater stacking3. Closed water system1. Thermostat not functioning properly2. Improper calibration1. Insufficient combustion air2. Water heater flue or vent systemblocked3. Heater installed in a confined area4. Base-Ring Filter blocked with lint/dust5. FVIR Flame Arrestor blocked withlint/dust.1. Insufficient combustion air2. Low gas pressure3. Water heater flue or vent systemblocked4. Thermostat not functioning properly5. Heater installed in a confined area6. Burner flame yellow-lazy7. Base-Ring Filter blocked with lint/dust8. FVIR Flame Arrestor blocked withlint/dust.1. Provide ventilation to water heater. Checkflue way, flue baffle, and burner2. Clean flue, locate source and correct3. Check with gas utility company4. Replace thermostat5. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.6. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.1. Use a pressure reducing valve and reliefvalve2. Lower the thermostat setting3. See “Closed System/Thermal Expansion”1. Replace thermostat2. Replace thermostat1. Provide ventilation to water heater. Checkflueway, flue baffle, and burner2. Clean, locate source and correct3. Provide fresh air ventilation4. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.5. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.1. Provide ventilation to water heater. Checkflue way, flue baffle, burner2. Check with gas utility company3. Clean, locate source and correct4. Replace thermostat5. Provide fresh air ventilation6. See “Burner Flame Yellow-Lazy”7. Clean filter, See “External Inspection &Cleaning of the Base-Ring Filter” section.8. Clean filter, See “Cleaning the CombustionChamber and Flame-Arrestor” section.CONDENSATION 1. Temperature setting too low 1. Increase the temperature setting. Referto the “Condensation” sub-section of thismanual’s Troubleshooting Guide.BURNER FLAME FLOATSAND LIFTS OFF PORTS1. Orifice too large2. High gas pressure3. Water heater flue or vent systemblocked4. Cold drafts1. Replace with correct orifice2. Check with gas utility company3. Clean flue and burner-locate source and correct4. Locate source and correctBURNER FLAME TOO HIGH 1. Orifice too large 1. Replace with correct orificeFLAME BURNS AT ORIFICEPILOT FLAMETOO SMALL1. Thermostat not functioning properly2. Low gas pressure1. Pilot line or orifice clogged2. Low gas pressure1. Replace thermostat2. Check with gas utility company1. Clean, locate source and correct2. Check with gas utility company31
Page 1 and 2: Installation Instructions and Use &
Page 3 and 4: SAFE INSTALLATION, USE AND SERVICEY
Page 5 and 6: TYPICAL INSTALLATIONGET TO KNOW YOU
Page 7: Location RequirementsWARNINGCarbon
Page 10 and 11: LP Gas OnlyWARNINGExplosion HazardH
Page 12 and 13: PERMANENTOPENINGS TOTHE OUTSIDE ORA
Page 14: Align the legs of the draft hood wi
Page 18 and 19: • This water heater is not to be
Page 20 and 21: OPERATING YOUR WATER HEATERLighting
Page 22 and 23: Checking the DraftWater Temperature
Page 24 and 25: Excessive condensation can cause pi
Page 26 and 27: VACproperly. To prevent water damag
Page 28 and 29: External Inspection & Cleaning of t
Page 32 and 33: PILOT LIGHT TROUBLESHOOTING FLOWCHA
Page 34 and 35: STATUS LIGHT AND DIAGNOSTIC CODE TR
Page 36 and 37: REPAIR PARTS ILLUSTRATIONWhen order
Page 38 and 39: LIMITED RESIDENTIAL GAS WARRANTYTHI
Page 40: Copyright © 2010 A.O. Smith Corpor

320386-001 - AO Smith Water Heaters

Create successful ePaper yourself

Delete template?

Save as template?