A.O. Smith FPS 75 Technical Information Download Page 1

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Summary of Contents for FPS 75

Page 1: ...es226 227 FPSE 40 and 50 Series 226E FPD 40 and 50 Series226 227 ruc Wc D w Preparedby the Technical InformationDept Irving Texas FPS75 Series230 233 WATER PRODUCTS COMPANY A DIVISION OF A O SMITH CORPORATION 00 Printed in the U S A 596 4575 Part No TC O34 ...

Page 2: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK WORKBOOK INTRODUCTION Technical Information Irvino Texas 1 1995 A D Smith Water Products Co ...

Page 3: ...E FPD 6 FPSE FPD 40 50 Exteriorclearances FPS FPSE 7 Sequence of Operation 42 8 Wiring Diagram 43 Exterior clearances FPD 9 TroubleshootingIndex 44 Condensation PartsList 66 10 Sealing the vent Horizontal Length Calc FPS FPSE 11 FPS 75 VerticalLength Calc FPS FPSE 12 Sequence of Operation 68 13 69 Horizontal Length Calc FPD Vertical Length Calc FPD 14 Wiring Diagram Troubleshooting 70 PartsList 94...

Page 4: ...FPS FPSE FPDTECHNICALTRAININGAND SERVICEWORKBOOK CHOOSING THE BEST WATER HEATER Technical Information Irving Texas 3 1995 A D Smith Water Products Co ...

Page 5: ...FPS FPSE FPDTECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cant ...

Page 6: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cant ...

Page 7: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION ...

Page 8: ...ances FPS FPSE All exterior clearance requirements for the FPS and FPSE are measured from the vent termination Min clearances for side wall venting Min clearances for vertical Inside corner 3 l above or 4 to the side of any Side of door or window 4 gable dormer or roof structure Above door or window l with building interior access Below a window 4 l above snow level Above public walkway 7 Above gr...

Page 9: ...rior clearance requirements for the FPO are measured from the vent termination Min clearances for side wall venting Min clearances for vertical Inside corner 3 l above or 4 to the side of any Side of door or window 9 gable dormer roof structure Above door of window 9 with building interior access Above public walkway 7 l above snow level Above ground or snow level 1 Air intake to a living space 3 ...

Page 10: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant ...

Page 11: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant ...

Page 12: ...VENTING INSTAllATION cant ...

Page 13: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant ...

Page 14: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant ...

Page 15: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cant ...

Page 16: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant ...

Page 17: ...ht illustration The illustration on the left shows a negative To check for a negative condition close all windows outside doors and fireplace dampers Turn on all exhausting appliances including kitchen draft hoods clothes dryers furnaces bathroom vents etc Open all inner doors between these appliances and the Power Shot Once all appliances are on and inner doors open open the inlet air damper on t...

Page 18: ...nting that may cause some spillage of burnt gas into the room and check your draft visually inspecting the vent termination for blockage clearing blockage as necessary Improper venting is also a major cause of sooting in water heaters If you experience sooting with the POWER SHO check that the inlet air damper swings freely and opens 1 1 4 when the blower is running If water is dripping from the b...

Page 19: ...e in the main burner tube between thermostat gas valve and solenoid qas valve If cycling occurs more than twice per hour see troubleshooting procedures A malfunctioning vent damper may also cause excessive heat buildup in the PVC vent piping unable to free the damper replace the entire combustion control tee If If blower does not run when the main burner fires replace the control box Also check bu...

Page 20: ... air will be exhausted from the structure than is being brought in from the outside resulting in a negative pressure condition Fireplaces furnaces wind and thermal stacking within the house can also playa role in creating negative pressure conditions Negative pressure can result from air being backdrafted through the water heater vent down into the combustion chamber blowing out the pilot This may...

Page 21: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont A D Smith Water Products Co Technical Information Irving Texas 20 ...

Page 22: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION ...

Page 23: ...ALL DOORS AND PANELS BEFORE OPERATING HEATER 115 LT POWER SOURCE CONNECTOR Gim w I O Y G Y I w SWITCH W AIR PRESSURE ON OFF WlAECABLE SUPPUED WIn UNIT I CONNECroR J I I LEGEND B BLACK W WHITE R RED G GREEN G Y GREEN YELLOW U BLUE rc c r rr r R PRESSUREI COIL SWITCHI I I HEATER A QASMANIFOLD J 1995 A D Smith Water Products Co TechnicalInformation IrvinQ Texas 22 ...

Page 24: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant Technical Information Irving Texas 23 1995 A D Smith Water Products Co ...

Page 25: ... valve knob is in ON position 2 Pilot is burning 3 120 VAG is supplied to heater See page 25 4 Thermostat is calling for heat 5 Blower ON OFF switch is in the ON position 6 Connection between blower motor and blower control box is secure 7 Heater is installed per manual 1995 A D Smith Water Products Co Technical Information Irving Texas 24 ...

Page 26: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant Trouble shooting cont ...

Page 27: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant 1995 A D Smith Water Products Co Technical Information Irving Texas 26 ...

Page 28: ...K FPS 40 and 50 SERVICE AND OPERATION cont BLOWER DOES NOT RUN cant Trouble shooting cont RESULTS If then the fan does not run replace the fan assembly the fan does run go to Step 2 1995 A D Smith Water Products Co Technical Information Irving Texas 27 ...

Page 29: ... TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cont Trouble shooting cont RESULTS If then replace the cable the fan does not run go to Step 3 the fan does run ...

Page 30: ... TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cant Trouble shooting cont RESULTS If then replace the harness the fan does not run the fan does run replace the gas pressure switch ...

Page 31: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Technical Information IrvinQ Texas 30 1995 A D Smith Water Products Co ...

Page 32: ...nd 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cont Trouble shooting cont RESULTS If then replace the fan assembly the fan continues to run go to Step 2 the fan stops 1995 A D Smith Water Products Co Technical Information Irving Texas 31 ...

Page 33: ...TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CaNST ANTL Y No call for heat cant Trouble shooting cont RESULTS If then replace the cable the fan continues to run go to Step 3 the fan stops ...

Page 34: ...ND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cant Trouble shooting cont RESULTS If then the fan continues to run replace the harness the fan stops replace the gas pressure switch ...

Page 35: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant 1995 A D Smith Water Products Co Technical Information Irving Texas 34 ...

Page 36: ...RVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No main burner cont Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the air switch the meter does read 120 VAG go to Step 2 Technical Information Irving Texas 35 1995 A D Smith Water ProductsCo ...

Page 37: ...SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No main burner cant Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the cable the meter does read 120 VAG go to Step 3 Technical Information Irving Texas 36 1995 A D Smith Water ProductsCo ...

Page 38: ...ERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No main burner cont Trouble shooting cont RESULTS If then the meter does not read 120 VAC replace the harness the meter does read 120 VAC replace the solenoid ...

Page 39: ...1 2 2 Incorrect thermocouple output it should generate 7 or more millivolts when pilot is burning 3 Incorrect pilot gas pressure it should be 3 5 for natural gas and 10 for propane 4 Excessive equivalent foot length on vents can cause pilot outages 5 Backdraft can cause pilot outages See page 16 6 An open E C O will not allow the heater to be relit 7 A leak in the pilot tube will cause candling Te...

Page 40: ...of main burner problems 1 Unlevel burner will cause yellow flames 2 Burning and the orifice indicates main gas valve may not be fully closing 3 Incorrect manifold gas pressure it should be 3 5 for natural gas and 10 for propane 4 Soot build up Check gas pressure and air flow through heater and venting 1995 A D Smith Water Products Co Technical Information IrvinQ Texas 39 ...

Page 41: ...50 PARTS LIST PSD 1 263 b RESIDENTIAL WATER HEATER PARTS LIST MODELS FPS 40 AND 50 SERIES226 227 L ffi G J WATER PRODUCTS COMPANY 5621 W 115TH STR T ALSIP ILLINOl5 60462 1 600 433 2545 April 1994 Technical Information Irving Texas 40 1995 A D Smith Water Products Co ...

Page 42: ...19SS Wlrng Orl e Ma n 8urn tr N t r 1 Orji C9 Ma t BJ nlrr Propare OrI lce P io Nat Jral O i C Plio Propane Switch Pr ssJ e Natural Switch Press J e P DPanf Th mocouple TuDe lower Blif er N1JIU 1 Tube Lol o r Bt r er Prop 1 N JtOPlic iUw wltr her I 19 luDe P ot Tube Upuer Bl 1 1e Vave Sol f id N tvra Valle Solenoid PropanfJ Cab Oi rlrol W C lp C p owe Ven1 Door Calar Pne Cover Gas C f 1 ol Slrng O...

Page 43: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION Technical Information Irving Texas 42 1995 A D Smith W t r Products Co ...

Page 44: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Technical Information Irving Texas 43 1995 A D Smith Water Products Co ...

Page 45: ...ERATION cont Page I Subject I Preliminary Checks Page 45 Page 46 I Blower does not run I Blower runs constantly No call for heat iPage51 Blower runs constantly Calling for heat no pilot I Page 54 Blower runs constantly Calling for heat pilot is lit no main burner IPage 61 Pilot Problems Page 64 Main Burner Problems Page 65 ...

Page 46: ...S FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont 1995 A D Smith Water Products Co Technical Information Irving Texas 45 ...

Page 47: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont ...

Page 48: ...ATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cont Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the blower assembly the meter does read 120 VAC go to Step 2 Technical Information Irving Texas 47 1995 A D Smith Water ProductsCo ...

Page 49: ... OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cant Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the cable the meter does read 120 VAG go to step 3 Technical Information Irvina Texas 48 1995 A D Smith Water ProductsCo ...

Page 50: ...WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER DOES NOT RUN cont Trouble shooting cont RESULTS If then the meter does not read 120 VAC replace high limit the meter does read 120 VAG go to Step 4 ...

Page 51: ...AINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cant Trouble shooting cont Technical Information Irving Texas 50 1995 A D Smith Water ProductsCo ...

Page 52: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cont 1995 A D Smith Water Products Co Technical Information Irving Texas 51 ...

Page 53: ...KBOOK FPSE 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cont Trouble shooting cont RESULTS If then the blower continues to run replace the blower the blower stops go to Step 2 ...

Page 54: ...OK FPSE 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cant Trouble shooting cont Rt If then replace the cable the blower continues to run I see preliminary checks Ithe blower stops ...

Page 55: ...ooting cont BLOWER RUNS CONSTANTLY CAlliNG FOR HEAT NO PilOT First make the Preliminary Checks see page 45 then perform each of the following tests until cause of the failure is determined 1 Air PressureSwitch 2 CableTest 3 THWire Test 4 PV PV IMVTest 5 SparkTest 6 Pilot Valve Technical Information IrvinQ Texas 54 1995 A D Smith Water Products Co ...

Page 56: ...nd 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read 24 VAC replace the pressure switch the meter does read 24 VAC go to Step 2 ...

Page 57: ... 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read 24 VAG replace the cable the meter does read 24 VAG go to Step 3 ...

Page 58: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant Trouble shooting cont ...

Page 59: ...cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then D the meter does not read 24 VAC replace the the meter does read 24 VAG go to Step 5 Technical Information Irving Texas 58 1995 A D Smith Water ProductsCo ...

Page 60: ...ICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont Technical Information Irving Texas 59 1995 A D Smith Water Products Co ...

Page 61: ... 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read continuity replace pilot valve the meter does read continuity check gas supply ...

Page 62: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont ...

Page 63: ...40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner cant Trouble shooting cont RESULTS If then the meter does not read 24 VAG replace the 1 1 0 the meter does read 24 VAG go to Step 2 Technical Information Irving Texas A D Smith Water ProductsCo 62 ...

Page 64: ...CE AND OPERATION cant FPD 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner cont Trouble shooting cont RESULTS If then the meter does not read continuity replace main valve the meter does read continuity check gas supply ...

Page 65: ...of pilot problems 1 An open E C O high limit will not allow the heater to relight See page 49 2 Incorrect pilot gas pressure it should be 3 5 w c for natural gas It should be 10 w c for propane gas 3 Incorrect excessive equivalent foot length on vents can cause pilot outages 4 Incorrect pilot position The pilot should engulf the tip of the flame sensor 3 8 1to 1 2 5 A leak in pilot tube will cause...

Page 66: ...LEMS Trouble shooting cont The following are possible causes of main burner problems 1 Unlevel burner will cause yellow flames 2 Burning and the orifice indicates main gas valve may not be fully closing 3 Incorrect gas pressure it should be 3 5 for natural gas and 10 for propane 4 Soot build up Check gas pressure and air flow through heater and venting ...

Page 67: ... SERVICE WORKBOOK FPSE 40 and 50 PARTS LIST FPD 40 and 50 PARTS LIST ill J WATER PROOUCTS COMPANY 582 w 5TH8TR T l81 IllINOIS8O 2rl 800 433 25 5 JUly 1995 P NTED V 5 Technical Information Irving Texas 66 1995 A D Smith Water Products Co ...

Page 68: ...1 82131 29 ilo I l lghlln aling 18 719 81119 182Q65 82065 29A legJROQuv d 38046 38046 30 Leg or A Gas 4 781 43781 7til 43761 31 MOOUIe IgrwIIon 61723 18172J 181723 181723 32 Ortf C A f1ow FPO 0nIv 181773 181173 33 On a Mam 9 1 NolvralGa 161S08 1 3 161 123 181 31 181508 31 PIOP Oas 181628 50181628 50 181791 50181791 50 34 OrtllCe ICI Natural0 808 4 00814 1 14 008 4 P op 0 5 180824 100824 1824 18082...

Page 69: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION 1995 A D Smith Water Products Co Technical Information Irving Texas 68 ...

Page 70: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant 1995 A D Smith Water Products Co Technical Information Irving Texas 69 ...

Page 71: ... Page 72 Blower does not run Blower runs constantly No call for heat Page 76 Blower runs constantly Calling for heat no pilot age 79 Blower runs constantly Calling for heat pilot is lit main burner Page 89 Pilot Problems Page 92 Main Burner Problems Page 93 Technical Information Irving Texas 70 1995 A D Smith Water Products Co ...

Page 72: ...FPS FPSE FPDTECHNICALTRAINING AND SERVICEWORKBOOK FPS 75 SERVICE AND OPERATION cant Trouble PRELIMINARY CHECKS shooting cont Technical Information Irving Texas 71 A D Smith Water Products Co ...

Page 73: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant ...

Page 74: ...RAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cont Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the blower assembly the meter does read 120 VAG go to Step 2 ...

Page 75: ...S FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER DOES NOT RUN cant Trouble shooting cont j 1995 A D Smith Water ProductsCo Technical Information Irvina Texas 74 ...

Page 76: ...VICE AND OPERATION cant BLOWER DOES NOT RUN cant Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace the thermostat the meter does read 120 VAG go to preliminary checks Technical Information Irving Texas 75 1995 A D Smith Water Products Co ...

Page 77: ...D TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont PRELIMINARY CHECKS EXCEPTIONS 4 Heater should be calling for heat 1995 A D Smith Water Products Co Technical Information Irving Texas 76 ...

Page 78: ... TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cont Trouble shooting cont RESULTS If then the blower continues to run replace the blower go to Step 2 the blower stops ...

Page 79: ...NING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY No call for heat cant Trouble shooting cont RESULTS If then the blower continues to run replace the cable the blower stops see preliminary checks ...

Page 80: ...ONSTANTLY CAlliNG FOR HEAT NO PilOT First make the PreliminaryChecks see page 71 then perform each of the following tests until cause of the failure is determined 1 Air Pressure Switch Test 2 Vent High Limit Test 3 Blower Test 4 Cable Test 5 High Limit Test 6 TH Wire Test 7 PV MV PV Test 8 Spark Test 9 Pilot Solenoid Test ...

Page 81: ... OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then replace the air pressure switch the meter does not read 24 VAG the meter does read 24 VAG go to Step 2 Line 24 VAC supply Load Wire carrying current onto high limit ...

Page 82: ...AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cont Trouble shooting cont RESULTS If then the meter does not read 24 VAG replace the vent high limit the meter does read 24 VAG go to Step 3 Line 24 VAG supply Load Wire carrying current onto connector ...

Page 83: ...AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cont Trouble shooting cont RESULTS If then the meter does not read 24 VAC replace the blower the meter does read 24 VAG go to Step 4 1995 A D Smith Water ProductsCo Technical Information Irving Texas 82 ...

Page 84: ...AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read 24 VAG replace the cable the meter does read 24 VAG go to Step 5 1995 A D Smith Water Products Co Technical Information Irving Texas 83 ...

Page 85: ...E AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cont Trouble shootingcont RESULTS If then the meter does not read 24 VAG replace high limit the meter does read 24 VAG go to Step 6 Technical Information Irving Texas A D Smith Water Products Co 84 ...

Page 86: ...AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTL Y Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read 120 VAG replace wire the meter does read 120 VAG go to Step 7 ...

Page 87: ...AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont RESULTS If then the meter does not read 24 VAC replace the 1 1 0 the meter does read 24 VAG go to Step 8 1995 A D Smith Water ProductsCo Technical Information Irving Texas 86 ...

Page 88: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont ...

Page 89: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat no pilot cant Trouble shooting cont ...

Page 90: ...FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant TechnicalInformation Irving Texas 89 1995 A D Smith Water Products Co ...

Page 91: ...E WORKBOOK FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner cant Trouble shootingcont RESULTS If then the meter does not read 24 VAG replace the I I D the meter does read 24 VAG go to Step 2 ...

Page 92: ...K FPS 75 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner cont Trouble shooting cont RESULTS If then replace the main valve the meter does not read continuity the meter does read continuity check gas supply ...

Page 93: ... will not allow the heater to relight See page 84 2 Incorrect pilot gas pressure it should be 3 5 for natural gas and 10 for propane 3 Excessive equivelant foot length on vents can cause pilot outages 4 Incorrect pilot position the pilot should engulf the tip of the flame sensor 3 8 to 1 2 5 A leak in pilot tube will cause candling Technical Information Irving Texas 92 1995 A D Smith Water Product...

Page 94: ... The following are possible causes of main burner problems 1 Unlevel burner will cause yellow flames 2 Burning at the orifice indicates main gas valve may not be fully closing 3 Incorrect gas pressure it should be 3 5 for natural gas and 10 for propane 4 Soot build up Check gas pressure and air flow through heater and venting ...

Page 95: ...TYPO TYPO j k T no j o Z 5 5 i 25 17 9 7 32 18 1 I i I 20 31 16 19 A O SMITH WATER PRODUCTS CO INC 5621 W 115TH STREET ALSIP ILUNOIS 6048211 800 433 2545 PSD 1 269 August 1895 PRINTeD U S A 1995 A D Smith Water Products Co Technical Information Irving Texas 94 RESIDENI IALWATER HB 4TER PAR7S LIST MODELS FP5 75 SERIES 230 231 232 233 I ...

Page 96: ...13 Pilot Assembly Nat 181954 2 13 Pilot Assembly Prop 181954 3 14 Pilot Mounting Plate 192625 15 PilotTube 23330 16 Collar Pipe 20172 6 17 Cover Control Panel 182181 18 Dirt Leg Supp on Prop 43761 Door 19 Inner 39923 20 Outer 39112 1 21 Extender T P Valve 43231 1 Label 22 Flammable Warning 181139 23 Lighting Operating 182214 24 Scald Warning 181138 25 Module Ignition 181723 26 Silicone High Temp 1...

Page 97: ... 5 W C I p 101 w c FPS40 50 FPSE FPD40 50 FPS75 Pilot Standing pilot 1 1 0 Draws 1 63 amps 1 1 0 Draws 1 63 amps FPS40 50 FPSE FPD40 50 FPS75 Gas Pressure Switch FPS40 50 Closes at 2 5 w c for natural Closes at 6 5 w c for propane FPS75 Vent High Limit Opens at 1900closes at 1500 Vent Material All models PVC Class 160 ASTM 0 2241 Schedule 40 ASTM 0 1785 or Cellular Core Schedule 40 OWV ASTM F 891 ...

Page 98: ...n If so does the air pressure make Does the solenoid open Does main burner ignite Does the thermostat satisfy Comments yes yes yes yes yes yes yes yes no no no no no no no no A FPD40 50 During standby is blower off On a call for heat does gas valve open Does gas pressure switch close Does the blower come on If so does the air pressure make Does the solenoid open Does main burner ignite Does the th...

Page 99: ...allation have a mixing valve If so is it operational What is the outlet temperature of the mixing valve NOTE Consumer Product Safety Commission advises that water temperature above 130 degrees F may cause scalding Is a properly rated temperature and pressure relief valve installed yes no C Electrical yes yes yes no no no Is the 120 VAG electrical power supply properly wired Are all the control cov...

Page 100: ...y Q No The unit may have condensing flue gases which would attack mortar or standard vent piping A Q Can I vent the FPS unit vertically A The Series 216 217 are sidewall venting only The Series 220 and higher can be vented either vertically or horizontally Will a snow riser kit be available 0 A snow riser kit can be constructed in the field in parts of the country where applicable venting should b...

Page 101: ...ing A Yes Use a latex paint if it will adhere to the smooth surface Do not use oil based paint they contain solvents which may attack the PVC Q May I use an FPS to replace a Sidewinder A Yes but the entire FFS unit must be used Note that the FPV KPV units use a larger joint penetration hole than is necessary for the FPS Close the gap by using insulation and a centering plate to center the vent pip...

Page 102: ...ag due to excessive temperature Propane units do not have a bypass in the gas solenoid valve This may result in occasional cycling stand by between calls for heat If you experience more than two stand by cycles per hour consider replacing the main gas control valve If hard wiring is required by local codes use the knockout provided on the blower control box ...

Page 103: ... c c 0 fiJDcu A DIVISION OF A O SMITH CORPORATION 00 FOR ADDITIONAL INFORMATION CONTACT A O SMITH TECHNICAL INFORMATION DEPARTMENT AT 1 800 527 1953 ...

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