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A.O. Smith fps50 Specification Sheet

1. E a MULTIMETER NES eos 120 HARNESS TEST SET UP THE TEST Reconnect the 4 wire cable to the control box cover disconnect the 2 wires from the solenoid then using a multimeter test for 120 VAC between wires as shown RESULTS If then the meter does not read 120 VAC replace the harness the meter does read 120 VAC replace the solenoid 1995 0 Smith Technical Information Water Products Co 37 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Trouble shooting cont FPS 40 and 50 SERVICE AND OPERATION cont ea PILOT PROBLEMS The following are possible causes of pilot problems 1 Incorrect pilot position the pilot should engulf the tip of the thermocouple 318 to 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 RESULTS If Any of these seem to be the problem repair or replace these items if necessary as you would in on any standard residential gas water heater 1995 0 Smith Technical Information Water Products
2. 181564 27 Tee 3 181617 28 Tee Condensate 181861 29 Thermostat w E C O 182053 1 30 Tube Inlet 41072 31 Valve Drain 26073 7 Valve 32 Gas 182238 32 Gas Prop errores 18 239 33 Wall 181557 34 Wire Ground 77948 9 35 Wire Harness 182203 1995 0 Smith Technical Information Water Products Co 95 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK PART INFORMATION Fan FPS40 50 Draws 75 amp Turns at 3325 RPM FPSE amp FPD40 50 Draws 75 amp Turns at 3325 RPM FPS75 Draws 1 8 amp Turns at 3000 RPM FPS40 50 Closes at 3 PSI FPSE amp FPD40 50 Closes at 3 PSI FPS75 Unavailable at this time Air Pressure Switch Thermostat FPS40 50 Temperature range no lower limit to 160 FPSE amp FPD40 50 Temperature range 110 150 FPS75 Temperature range 120 160 FPS40 50 Opens at 195 FPSE amp FPD40 50 Opens at 160 FPS75 Opens at 195 FPS40 50 FPSE amp FPD40 50 FPS75 FPS40 50 High Limit operating pressure 3 5 w c l p 10 w c operating pressure 3 5 w c l p 10 w c oper
3. gt ks Vos Oses i gt 30 Ut a o 24 j TH CURR MODELS jared aoe SME D ADT INPUT TERA ae SPT BHi es MV PV MV TEST SET UP THE TEST using a multimeter test for 24 VAC at MV main valve and PV MV on 1 1 0 as shown RESULTS If the meter does not read 24 VAC replace the 1 1 0 the meter does read 24 VAC go to Step 2 Technical Information Water Products Co 62 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner shooting cont cont 1 ul BTE paei g asl a NET EL WT LET RES on HL Parm gt MAIN VALVE TEST SET UP THE TEST inspect the wire from the 1 1 0 to the main valve for lack of continuity or loose connections correct any of these conditions if necessary disconnect the wires from the main valve then using a multimeter test for continuity on main valve as shown If there are other problems with the main burner see page 65 RESULTS If then check gas supply 61995 SSS See 0 Smith Technical Information Water Products Co 63 Irving Texas the meter d
4. V EgEREH WATER PRODUCTS COMPANY Horizontal As you can see the FPS amp FPSE40 50 models allow for increased venting Venting flexibility They can be vented horizontally up to a maximum of 45 equivalent feet Calculations from the heater Do not include termination tee in calculations FPS FPSE FPS75 can be vented horizontally up to a maximum of 25 equivalent feet from the heater Do not include the termination tee in calculations Excluding the termination tee you can have no more than four elbows in the vent system 91995 Smith Information Water Products Co 11 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cort FPS FPSE VENTING CALCULATIONS 12 minimum VERTICAL 90 ELBOW 5 FEET 45 ELBOW 2 5 FEET MAXIMUM OF 4 ELBOWS DO NOT INCLUDE TERMINATION TEE IN CALCULATIONS Vertical Venting Calculations FPS The FPS75 can be vented vertically up to 25 equivalent feet from the heater The FPS and FPSE40 50 be vented vertically up to 35 equivalent feet from the heater FPSE A minimum of 1 foot must be maintained between to roof or anticipated snow level and the termination tee u ni 1995 ar A 0 Smith Technical Information Water Products Co 12 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION
5. 5 181557 181557 31 Sealer Tube High Temp Sihcane Sealant 181564 181564 32 Condersata Assembly 5 181861 181861 33 Tee Discharge wit Screen 181617 181617 34 Leg Assembly dai 181206 181206 35 Restor Flue A 24894 34824 36 Thermostat Natural 182193 5 180133 5 Thermostat Proaane 181775 2 181775 2 37 Tube Inlet 21282 26 21262 31 38 Drair 42237 4203 1 39 Vave 43151 2 43151 2 Sealant must cortorm 10 MIL A 46106A type 1 21 CFR 175 399 Must be to wihstand constant ig lemoerature of 450 F and a law ol 75 F Equal ta National Polymer Proaucts Sealcon Il Pat numbers are acommended stock items lor emergency replacement Consider gas used in your area only 1995 0 Smith Technical Information Water Products Co 41 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Service amp FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION amp Most problems will first appear as blower malfunctions either a blower that does Operation not run or a blower that runs constantly In these instances further trouble Introducti Sequence Operation 1995 0 Smith Information Water Products Co 42 Irving Texas on shooting is required to determine the exact cause Familiarize yourself with the sequence of operation
6. FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION CHECKING THE DRAFT A et oS ee nner od Eee WATER PRODUCTS COMPANY On initial start up check for the correct draft on the Power Shot To check the draft place a smoke stick directly in front of the inlet air damper while the heater is firing A properly operating system will draw the smoke into the inlet air damper as shown in the right illustration The illustration on the left shows a negative Checking for Draft 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 the Power Shot when the heater is not firing Using your hand check for air movement If air is being blown back into the room a negative pressure condition exists 1995 e A 0 Smith Technical Information Water Products Co 16 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont CAUSE Leaking vent Joints SOLUTION CONDITION Burnt gas odor when heater is operating The majority of the complaints associated with the operation of the will likely be a direct result of improper venting If the cust
7. Vertical This unit is approved for venting through the roof with only the terminations Venting supplied with the unit Intake and exhaust elbows must be on same surface of the Calculations house Excluding the vent terminations a maximum of 25 equivalent feet may be FPD used in the intake vent system and a maximum of 25 equivalent feet may be used in the exhaust vent However excluding the termination elbow you can have no more than four elbows in each vent 1995 A D Smith Technical Information Water Products Co 14 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cont FPD VENTING CALCULATIONS DOWN 22 INTAKE VENT MAXIMUM 25 EQUIVALENT FEET al EXHAUST VENT MAXIMUM 25 EQUIVALENT FEET 90 ELBOW 5 FEET 45 ELBOW 2 5 FEET MAXIMUM OF 4 ELBOWS IN EACH VENT DO NOT INCLUDE TERMINATION ELBOWS IN CALCULATIONS A Swann WATER PRODUCTS COMPANY oe Intake and exhaust elbows must be same surface of the house Excluding the Venting vent terminations a maximum of 25 equivalent feet may be used in the intake Calculations vent system and a maximum of 25 equivalent feet may be used in the exhaust FPD vent However excluding the termination elbow you have no more than four elbows each vent Down 1995 A 0 Smith Technical Information Water Products Co 15 Irving Texas
8. 52 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont CABLE TEST SET TEST UP Reconnect cable to blower control box then disconnect cable from receptacle on the door below as shown inspect the wire from thermostat to 4 pin connector for lack of continuity or loose connections correct either of these conditions if necessary RESULIS If then the blower continues to run replace the cable the blower stops see preliminary checks 1995 A 0 Smith Technical Information Water Products Co 93 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont B 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 Air Pressure Switch Cable Test TH Wire Test Test Spark Test Pilot Valve gt PRELIMINARY CHECKS EXCEPTIONS 5 Turn ON OFF switch off then on again to reset 1 1 0 If module locks out See page 64 Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit
9. Smith Technical Information Water Products Co 43 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont ge To troubleshoot the FPSE and FPD you must understand its sequence of operation Review that section if necessary In addition installation problems can cause the heater to malfunction Review sections on venting and checking draft Most problems with the heater will first appear as blower malfunctions Preliminary Checks Page 45 Blower does not run Page 46 Blower runs constantly Page 51 No call for heat Blower runs constantly Page 54 Calling for heat no pilot Blower runs constantly Calling for heat pilot is lit no main burner Pilot Problems Page 64 Main Burner Problems 1995 mE 7 Smith Technical Information Water Products Co 44 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont PRELIMINARY CHECKS shooting cont 1 Gas valve knob is ON position 2 120 VAC is supplied to heater 3 Thermostat is calling for heat See page 50 4 Blower ON OFF switch is in the ON position 5 Connection between blower motor and blower control box is secure 6 High limit is closed See page 49 7 Heater is installed per manual RESULTS
10. Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC MM MEM d A 0 Smith Technical information Water Products Co 54 Irving Texas FPS FPSE FPD TECHNICAL TRAINING SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont 5 nplug4 wire cable andjump lt ES mr wettor 24V between terminals 2 amp 4 B S ie d I Air swifefftube AIR PRESSURE SWITCH TEST SET UP THE TEST Disconnect the 4 wire cable from the blower control box using an insulated jumper wire jump between pins 1 and 3 caution 120 VAC on the receptacle then using a multimeter test for 24 VAC between pins 2 and 4 as shown RESULTS If then the meter does not read 24 VAC replace the pressure switch the meter does read 24 VAC go to Step 2 1995 0 Smith Technical Information Water Products Co 55 Irving Texas Trouble shooting cont 918925 Smith Wiater Pradiiete 56 FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cont rn um
11. study the wiring diagram and complete the preliminary checks then if those are OK go to the section of this workbook that applies to the condition and follow the tests SEQUENCE OF OPERATION ate GAS AND ELECTRIC POWER 4 ES CLOSES OFFJON SWITCH af nt IS ON 2959 Ee og 2 BLOWER ON ONOFF sumen 6 IGNITOR LIGHTS PILOT AND PROVES PILOT MAIN BURN GROUND WIRE 4 IGNITION CONTROL ud FIRES STARTS SEQUENCE ffa 1 THERMOSTAT CALLS FOR HEAT x MAIN VALVE OPENS e D 5 PILOT VALVE OPENS Ba VOLTS COMPANY Thermostat calls for heat Blower activates Air pressure switch closes Ignition starts Pilot valve opens ignitor lights pilot and proves pilot Main valve opens Main burner ignites of FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Wiring This wiring diagram only applies to models FPSE 40 amp 50 series 226E and models Diagram FPD 40 amp 50 series 226 227 WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER de j i SWITCH dE 2 SWITCH amp ECO CONNECTION wer AIR PILOT VALVE l WA 6 SPVIMV LVE o PILOT 182204 000 RE V XXX G Y aREEN YELLOW GsGREEN U BLUE R RED CLOAANGE YeYELLOW OR GREY 91995 A 0
12. using a multimeter test for 24 VAC at screw high limit and ground as shown RESULTS If the meter does not read 24 VAC replace high limit the meter does read 24 VAC go to Step 6 5954 4 DDR 0 Smith Technical Information Water Products Co 84 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont UE Er J TI T VE T ge em pee uie el 1 LI LI E j AD 5 Reconnect the wire to high limit inspect wire between high limit and 1 1 0 for lack of continuity or loose connections correct either of these conditions if necessary then using a multimeter test for 24 VAC at TH wire on the 1 1 0 and ground as shown RESULTS If the meter does read 120 VAC go to Step 7 1995 4 0 Smith Technical Information Water Products Ca 85 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK r zm eg rero FPS 75 SERVICE AND OPERATION cont 9 Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont E IU OUTPUT PV OR MVs 1 5 AMP AT 5 pf PV PV MV TEST SET UP THE TEST Using a multimeter test for 24 VAC between PV pilot valve and PV MV on 1 1 0 as shown Sparking
13. AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont BLOWER TEST SET UP THE TEST Disconnect the 4 wire cable from the blower control box then using a multimeter test for 120 VAC between pins 1 and 3 on the control box receptacle as shown RESULTS If the meter does not read 120 VAC replace the blower assembly the meter does read 120 VAC go to Step 2 1995 A 0 Smith Technical Information Water Products Co 13 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont amp Trouble BLOWER DOES NOT RUN cont shooting cont SET TEST UP Reconnect cable to blower control box disconnect cable from door receptacle below then using a multimeter test for 120 VAC between pins 1 and on the cable plug as shown the meter does not read 120 VAC replace the cable the meter does reads 120 VAC go to step 3 61995 9 0 Smith Technical Information Water Products Co 74 Irvina Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont THERMOSTAT TEST SET UP THE TEST Reconnect cable to door receptacle Adjust the thermostat to call for heat then using a multimeter test for 120 VAC at screw on thermostat and ground as shown RESULTS If the meter does not read 120 VAC replace
14. Co 38 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont MAIN BURNER PROBLEMS 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 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 RESULTS If then Any of the Preliminary Checks reveala repair or replace these items if problem necessary as you would in on any standard residential gas water heater 1995 0 Smith Technical Information Water Products Co 39 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 PARTS LIST PSD 1 263 b G AS RESIDENTIAL WATER HEATER PARTS LIST MODELS FPS 40 AND 50 SERIES 226 227 A Lo 0 SHIM rid WATER PRODUCTS COMPANY PRINTED IN U S A 5821 W 115TH STREET ALSIP ILLINOIS 604682 1 800 433 2545 April 1994 1995 A 0 Smith Technical Information 40 Irving Texas Water Products Co Series 226 22 hem Description 5 40 5 50 1 Anode 438 7 25 438 7 38 2 Batle Flue 181382 18 382 3 Batle Hanger 181360 181360 4 Biowa Assembly 181920 18 920 5 Burner Assembly Natural IM a 181936 181936 2
15. If Any of the Preliminary Checks reveala repair or replace these items if problem necessary as you would in on any standard residential gas water heater Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 01995 A 0 Smith Technical Information Water Products Co 45 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont E FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont First make the Preliminary Checks see page 45 then perform each of the following tests until cause of the failure is determined 1 Blower Test 2 Cable Test 3 High Limit Test 4 Thermostat Test When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC Cautions 01995 80 A 0 Smith Technical Information Water Products Co 46 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont
16. ON OFF S iiem 4 1g the OFF B Turm the ON OFF E position E Au 1310 C qi T OLE TEES t Vd gak Nr zu Bem agree 0 amp fmi CABLE TEST UP THE TEST Reconnect the 4 wire cable to the blower control box disconnect the cable from receptacle on door below using an insulated jumper wire jump between pins 1 and 3 caution 120 VAC on cable plug then using a multimeter test for 24 VAC between pins 2 and 4 as shown RESULTS If the meter does not read 24 VAC replace the cable the meter does read 24 VAC go to Step 3 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cont PI Trouble shooting cont EHF 4 IM et A OUTPUT PV OR 1 5 AMP AT 5 gel A is sad i Ee GAP 7 64 IN FCP WA TANE DOC PART NO 100 00826 2 FE 22 50 50 3 CURRENTS 150 AMP MVT x a i d E t amr TH WIRE TEST SET UP THE TEST Reconnect the cable to receptacle on the door remove front cover door inspect the wire from the connecto
17. Pidot 181726 181726 181726 781725 Propane Gas 181726 1 181726 1 181726 1 181725 1 10 Cabe Control wClipg dw dw ee ee 181728 181728 181728 181728 11 Collar Pipe pev nau uada 20172 14 20172 14 20172 14 pin 14 12 Couphng 181543 181943 sasa 13 Door Inner S ovr PENES 180596 180596 181449 181449 14 Door Pane Cover PORE ok Se sx 181708 181708 181943 181943 15 Door Panel s 181857 181857 181942 181942 16 Dom Panel Bottom 5 181858 181858 181941 1H1941 17 Door Pane Right 181859 181859 181940 181940 18 Door Lem 2 181880 181860 1861939 181939 19 Door Piug Outer ioe 181733 181733 E nus 20 Eibow Assembly Exhaust FPD Only EM 18t528 181528 2 Elbow Assembly intake Only T 1 182167 182167 22 Flue ee 181382 181382 181382 181382 23 Flue Resincior 34894 24894 34894 34894 23A Gasket Fiberglass Se s 4 182130 182130 24 Gasket Inlet Tee FPO Only _ TT 181765 181765 25 Grommet Outer Door 181764 181764 181764 1 181764 1 26 2 ie Fei ces os coker ae 181734 181903 181903 27 Insuiption Angle _ ee 4 182132 182132 28 inguialion 4 z a 182131 182131 29 Label Lighting amp Operating 181719 18
18. Pressure which the heater is installed Mechanical vent fans are the chief cause of negative pressure If the house is too tight more 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 play a 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 happen randomly because it may be a particular combination of appliances which cause the condition 91995 Smith Technical Information Water Products Co 19 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont MAKE UP AIR DUCTS To alleviate a negative pressure condition install makeup air ducts per makeup air specifications listed in the National Fuel Gas Code of sufficient capacity to allow all appliances requiring makeup air to operate properly 1995 e 0 Smith Technical Information Water Products Co 20 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION Service amp Most problems will first appear as blower malfunctions either a blower that does Operation not run or a blower that runs constantly In these instances further trouble Introduction shooting is re
19. T arp E m ia T x JV 4 3 ii N F 15 1 r vig I iR da zy ONE a 2 31 rm ria Le i x f i f 2i ru Re H 2 k E 1 VN n A d 1 ra 5 SET UP THE TEST Reset the ON OFF switch then visually check for spark at the pilot assembly Sparking should stop as soon as pilot is lit If sparking continues see page 64 RESULTS If then the electrode is not sparking check 7 64 spark gap between pilot hood and electrode check spark cable continuity check ground cable continuity at 1 1 0 the electrode is sparking go to Step 6 1995 0 Smith Technical Information Water Products Co 59 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont i 5 a H il di PILOT VALVE TEST SET UP THE TEST Inspect the wire from the 1 1 0 to the pilot valve for lack of continuity or loose connections correct any of these conditions if necessary disconnect the wire from the pilot valve then using a multimeter test for continuity at pilot valve as shown If there are other problems with the pilot see page 64 RESULTS If the meter does not read
20. TEST SET UP THE TEST Reconnect cable to the receptacle on the door remove front cover from the door inspect the wire from connector to the high limit for lack of continuity or loose connections correct either of these conditions if necessary make sure the red button on the high limit is depressed using a multimeter test for 120 VAC at screw on high limit and ground as shown RESULTS If the meter does not read 120 VAC replace high limit the meter does read 120 VAC go to Step 4 61995 A 0 Smith Water Products 49 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont 214 4 MVE 1 5 AMP AT ij 4 nu psu T E F E T ns OUTPUT PY TH CU THERMOSTAT TEST SET UP THE TEST Adjust the thermostat to call for heat then using a multimeter test for 120 VAC at screw on thermostat and ground as shown inspect the wire from thermostat to 4 pin connector for lack of continuity or loose connections correct either of these conditions if necessary RESULTS If the meter does not read 120 VAC replace the thermostat the meter does read 120 VAC go to Step 1 of the troubleshooting pro
21. TRAINING AND SERVICE WORKBOOK FPS 75 SERIES 230 231 THRU 232 233 Description Part Number 1 Anode 180618 42 Baffle Baffle Flue 182193 Flue Restrictor 35405 Blower Blower Assembly 182225 Blower Wiring Hamess 181728 1 Fan Housing 182156 Bracket Gas Valve 182179 Burner 8 Air Shutter 95376 9 Lock Nut 10 Burner 2 41157 4 11 Nat 39114 4 11 Main Burner Tube Prop 181784 2 12 Orifice Main Burner Nat 29366 21 12 Orifice Main Burner Prop 181778 39 13 13 14 15 Pilot Assembly Nat 181954 2 Pilot Assembly Prop 181954 3 Pilot Plate 192625 Pilot Tube sessssaiesqsseavass 16 Collar Pipe 20172 6 17 Cover Control Panel a 182181 18 Dirt Leg Supp Prop 43761 Door 19 99923 20 Outer AA 39112 1 21 Extender Valve en 43231 1 Label 22 Flammable Warning 181139 23 Lighting amp Operating 182214 24 Scald Warning 181138 25 Module Ignition 181723 26 Silicone High Temp
22. continues to run replace the cable the blower stops P see preliminary checks 1995 Smith Technical Information Water Products Co 78 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY CALLING FOR HEAT NO PILOT First make the Preliminary Checks see page 71 then perform each of the following tests until cause of the failure is determined 1 Air Pressure Switch Test Vent High Limit Test Blower Test Cable Test High Limit Test TH Wire Test PV MV PV Test Spark Test Pilot Solenoid Test CHONDARWN 1995 A 0 Smith Technical Information Water Products Co 73 irvina FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont AIR PRESSURE SWITCH TEST SET UP THE TEST Remove the air pressure switch from control box leaving wires attached remove load wire from air pressure switch using a multimeter test for 24 VAC between the terminal and ground as shown There are several reasons the air pressure switch may not be making See pages 10 11 12 1 16 RESULTS If the meter does not read 24 VAC replace the air pressure switch the meter does read 24 VAC go to Step 2 Ji 2 Line 24 VAC supply Load Wire carrying current onto high limit t
23. for heat does gas valve open yes no Does gas pressure switch close yes no Does the blower come on yes no If so does the air pressure make yes no Does the solenoid open yes no Does main burner ignite yes no Does the thermostat satisfy yes no Comments RS A FPD40 50 During standby is blower off yes no On a call for heat does gas valve open yes no Does gas pressure switch close yes no Does the blower come on yes no If so does the air pressure make yes no Does the solenoid open yes no Does main burner ignite yes no Does the thermostat satisfy yes no Comments A FPS75 During standby is blower off yes no On a call for heat does gas valve open yes no Does gas pressure switch close yes no Does the blower come on yes no If so does the air pressure make yes no Does the solenoid open yes no Does main burner ignite yes no Does the thermostat satisfy yes no Comments e 1995 0 Smith Technical Information Water Products Co 9 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK SERVICE CHECKLIST cont VII SAFETY A Gas Does pilot flame prove before main burner ignites yes no Does damper blade fully open before ignition sequence occurs yes no Is burner cover plate in place yes no Is burner floor shield in place yes no Does IID lockout occur after 30 sec trial for ignition Propane models only yes no B Water Temperature Is the thermostat adjusted to the lowest acceptable temperatu
24. should stop when pilot is lit If sparking does not stop see page 92 RESULTS If Y the meter does not read 24 VAC replace the 1 1 0 the meter does read 24 VAC gotoStep8 al 1995 99 A 0 Smith Technical Information Water Products Co 86 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont m at i 3 ITE SN ag r fed if SPARK TEST SET UP THE TEST Reset the ON OFF switch then visually check the spark at the pilot assembly Sparking should stop when pilot is lit If not see page 92 RESULTS If then the electrode is not sparking check 64 spark gap between pilot hood and electrode check spark cable continuity check ground cable continuity at 1 1 0 go to Step 9 1995 A0 Smith Technical Information Water Product Co B Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont D Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont Pe al ae Bu m MM GE i HR Fal ae PILOT VALVE TEST SET UP THE TEST inspect wire between 1 1 0 and pilot valve for lack of continuity or loose connections correct either of these conditions if necessary then disconnect the w
25. the thermostat the meter does read 120 VAC go to preliminary checks 1995 A 0 Smith Technical Information Water Products Co 75 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK L FPS 75 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY CALL FOR HEAT First make the Preliminary Checks see page 71 then perform each of the following tests until cause of the failure is determined 1s Blower Test 2 Cable Test PRELIMINARY CHECKS EXCEPTIONS 4 Heater should be calling for heat eee 761995 A 0 Smith Technical information Water Products Co 76 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont BLOWER TEST SET UP THE TEST Disconnect the 4 wire cable from the blower control box RESULTS If the blower continues to run replace the blower the blower stops go to Step 2 61995 4 0 Smith Technical Information Water Products Vili Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY for heat cont shooting cont CABLE TEST SET TEST UP Reconnect cable to blower control box then disconnect cable from receptacle on door below as shown RESULTS If the blower
26. 1718 182065 182065 29A 100 Required s 38046 38046 30 Dirt Assembly Propane Gas 2 43761 43761 43761 43761 31 Module Ignition 181723 181723 181723 181723 32 Flow FPO Only Loss 181773 181773 33 Mam Burner Metural Gas Mati 181506 122 181508 123 181500031 181508 031 Propane 181628 50 181428 50 181791 50 18170 50 Pot Natural __ _ 180814 180814 180814 180814 Propane Gas 2 150824 150824 180824 180824 35 90 Elbow 2 181530 181530 os 36 Pipe 3 x 48 Length 1815251 181531 1 e 37 Pipe T x Length tpe 181827 181827 38 F x 12 Length T wa 181531 181531 Plate Cover n 181938 181938 39 Plate Mounting 181615 181615 181944 181944 40 Piate Wall Ae a RIED 181557 181567 181557 181557 41 Protector Personnel s s 181758 181758 181758 181758 42 Pa eae ae ce se a Oa aaa 181825 181625 43 Tube High Temp Silicone Sealant 181564 161364 181564 181564 13A Tee PVC F 181762 181762 Tee Assembly Exhaust FPSE PGSE Only 181617 181617 45 Condensate 222 181961 181861 181861 181861 46 EDS L
27. Burner Assemoly Propane 181336 1 181936 3 amp Bume Head 181806 181806 7 Bumer with Pilot uding ker 14 Natura Gas ae Se ee ie Propane Gas Burner Natural 181805 3 181805 2 Burner Prat Propane 181805 2 18 805 2 9 Bieed Piot Natural Only 181804 2 1B8 804 2 10 Bieed Tube Natural Orly 23330 23330 11 Biaed Elbow Natural Only 181825 18 825 12 Harness Wirng 5 181890 18 89 13 Once Main Burner Natural 181508 31 181508 31 Man Burner Propane 22 18781 50 181 91 50 14 Ontice Pilot Natural e Orifice Pilot Propane 2 15 Switch Pressure Natural 180997 1 1 180997 1 Switch Pressure Propane 181044 1 181044 1 16 Thermocouple NEC LT e cem 23675 23675 17 Tube Lower Burner Natural 191887 181887 1 Tube Lower Burner Prapana 18 9 4 181914 1 17A Nut Optic Use with hemi 17 amp 19 18 Pho 8o 23330 23330 9 Tube Upper Burner 18 92 187192 20 Vave Salenoid Natura 187936 18416 Solenoid Propane 18 917 181917 2 Cable Control 18 72B 1 18 728 1 22 Cap Power Vent Doer 18 286 18 286 23 Ca lar P ne 00172 14 20772 14 24 Cover Gas Contool Sirng 180540 1 180540 1 25 Door Burner Companment 181255 700 161255 709 26 Door Inne 180596 180596 Kit Vert Pipe 27 Ca pling 28 Elbow Discharge wih Screer 29 Pipe P V C 3 x 12 181531 181531 30 Plate OuterIn er
28. ECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER Introduction The A O Smith power vent family of residential water heaters is designed to meet FPS different installation conditions Therefore we must evaluate the job site in which FPSE these heaters are to be installed FPD EVALUATING THE INSTALLATION FPS Alcove or Closet Dedicated Fresh Make up Air Supply WATER EHODBUCTS COMPANY When to The 540 50 Power Shot is the best choice for those installations that need choose the sidewall venting or complex vertical venting It can be installed in an alcove FPS40 50 closet or anywhere a source of fresh make up air is available Makeup air provides air for combustion and dilution air for venting The FPS40 50 feature a standing pilot 01995 Smith Water Products 3 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cort EVALUATING THE INSTALLATION ER FPSE 5 75 Np SEDE Air supply from uum 1 4 inside building 7 Where backdraft conditions occur during heater standby When to Here the FPSE40 50 or FPS75 Power Shot is the best choice for an installation choose the where a negative pressure c ndition could develop from other appliance exhaust FPSE fans installed in the house This illustration shows the heater in a large open FPS75 basement Air f
29. ERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat pilot is lit main burner shooting cont cont PEPE yh LFLEJ gei uid Cay Rali amp wn GFR Wit 1 a zal d b HH i 154 MAIN VALVE TEST SET UP THE TEST inspect wire between 1 1 0 and main valve for lack of continuity or loose connections correct either of these conditions if necessary then using a multimeter test for continuity on main valve as shown RESULTS If then the meter does not read continuity replace the main valve the meter does read continuity check gas supply 1995 A D Smith Technical Information Water Products Co 91 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble shooting cont PILOT PROBLEMS The following are possible causes of pilot problems 1 An open high limit 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 Tu 5 A leak in pilot tube will cause candling RESULTS If Any of the Preliminary Checks reveal repair or replace thes
30. INING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont NS ALLER 7 a HARNESS TEST SET UP THE TEST Reconnect the 4 wire cable onto control box cover disconnect the 2 wires from the gas pressure switch then using an insulated jumper wire jump between the 2 wires as shown RESULTS the fan does not replace the harness the fan does replace the gas pressure switch 1995 0 Smith Technical Information Water Products Co 29 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY shooting cont CALL FOR HEAT First make the Preliminary Checks see page 24 then perform each of the following tests until cause of the failure is determined 1 Blower Test 2 Cable Test 3 Harness Test PRELIMINARY CHECKS EXCEPTIONS 4 Thermostat should not be calling heat See page 25 Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 1995 Smith Technical Information Water Products Co 30 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE W
31. ORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont BLOWER TEST SET UP THE TEST Disconnect the 4 wire cable from the fan control box as shown RESULTS If then the fan continues to run replace the fan assembly the fan stops go to Step 2 1995 0 Smith Technical information Water Products Co 31 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont CABLE TEST SET UP THE TEST Reconnect the 4 wire cable onto the fan control box then disconnect the cable from the control box cover below as shown RESULTS If the fan continues to run 2 replace the cable the fan stops go to Step 3 01995 0 Smith Technical Information Water Products Co 32 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont HARNESS TEST SET UP THE TEST Reconnect the 4 wire cable onto the control box cover then disconnect one of the wires from the gas pressure switch as shown RESULTS If then the fan continues to run replace the harness the fan stops replace the gas pressure switch 21885 40 Smith Technical Infor
32. PERATION cont Trouble shooting cont by EP o T ip ms oce BEN Eum uU no mmo Uo es pes we ja at 4 i a eee Li i i p Mia E e E pressure gauge PRELIMINARY THERMOSTAT TEST SET UP THE TEST Place top knob on gas valve to OFF position remove pressure tap set screw from bottom of gas valve connect gas pressure gauge to gas pressure tap relight pilot rotate thermostat dial to call for heat then place top knob on gas valve to ON position Caution check for gas leaks RESULTS If the gas pressure gauge does not pressurize to read 4 0 w c replace the valve natural gas or 10 w c propane gas does pressurize to read 4 0 w c the gas valve is OK Continue to Step 1 natural gas 10 w c propane gas of the troubleshooting procedures 1995 A 0 Smith Technical Information Water Products Co 25 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont BLOWER DOES NOT RUN First make the Preliminary Checks see page 24 then perform each of the following tests until cause of the failure is determined 1 Blower Test 2 Cable Test 3 Harness Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn t
33. POWER VENT WATER HEATERS Service Workbook ZE p e om ML M Models FPS 40 and 50 Series 226 227 FPSE 40 and 50 Series 226E FPD 40 and 50 T AN GY Series 226 227 aa Dept WATER PRODUCTS FPS 75 ing Texas COMPANY Series 230 233 A DIVISION OF A O SMITH CORPORATION Printed in the U S A 596 4575 Part No TC 034 FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK WORKBOOK INTRODUCTION The information contained in this workbook is designed to answer situations commonly encountered in the operation of the POWER SHOT and SEALED SHOT Product and is not meant to be all inclusive If you are experiencing a problem not covered in this workbook please contact the A O Smith Technical Information Department at 800 527 1953 or your local Smith Water Products Company representative for further assistance This workbook is intended for use by licensed plumbing professionals and _ reference should be made to the installation manual accompanying the product Model and This workbook covers the following models and series numbers If your model is Series Nos not listed see other workbooks Affected Model Series Model Series FPS 40 amp 50 226 amp 227 FPSE 40 amp 50 226E Model Series Model Series FPD 40 amp 50 226 amp 227 FPS 75 230 amp 231 FPS 75 232 233 Service of these water heaters must be performed by a qualified service professional Gas supply plumbing
34. RESSURE ON OFF SWITCH THERM MOTOR W Y es 1 Re TNS W NEP 77 3 HIGH LIMIT SWITCH PILOT VALVE 2 Ey GND m zo MAIN VALVE PV MV gt g 4 PILOT LEGEND UrzaHEEeWYELLUOW G GR EEN WoewWHITE BA BROWN OOF ANGE YaYELLOW GHzahE ee eli v 01995 Smith Technical information Water Products Co 69 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont To troubleshoot the FPS you must understand its sequence of operation Review that section if necessary In addition installation problems can cause the heater to malfunction Review sections on venting and checking draft Most problems with the heater will first appear as blower malfunctions Sama Page Preliminary Checks Page 71 Blower does not run Page 72 Blower runs constantly No call for heat Blower runs constantly Page 79 Calling for heat no pilot Blower runs constantly Page 89 Calling for heat pilot is lit main burner Pilot Problems Page 92 Main Burner Problems Page 93 1995 5 0 Smith Technical Information Water Products Co 70 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont PRELIMINARY CHECKS shooting cont 1 Gas valve knob is in ON position 2 120 VAC is supplied to heater 3
35. Thermostat is calling for heat 4 Blower ON OFF switch is in the ON position 5 Connection between blower motor and blower control box is secure RESULTS If Any of the Preliminary Checks reveal repair or replace these items if problem necessary as you would on any standard residential gas water heater Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 1995 0 Smith Technical Information Water Products Co 71 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont BLOWER DOES RUN First make the Preliminary Checks see page 71 then perform each of the following tests until cause of the failure is determined 1 Blower Test 2 Cable Test 3 Thermostat Test Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 1995 0 Smith Technical Information Water Products Co 72 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE
36. Trouble BLOWER DOES NOT RUN cont shooting cont Unplug4wiregable gt Test for 120 terminal 1 amp 3 BLOWER TEST ISET UP THE TEST Disconnect the 4 wire cable from the blower control box then using a multimeter test for 120 VAC between pins 1 and 3 on the control box receptacle as shown RESULTS If then the meter does not read 120 VAC replace the blower assembly the meter does read 120 VAC go to Step 2 91995 A 0 Smith Technical Information Water Products Co 47 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont e Trouble BLOWER DOES NOT RUN cont shooting cont 0 CABLE TEST SET TEST UP Reconnect cable to blower control box disconnect cable from receptacle on door below then using a multimeter test for 120 VAC between pins 1 and 3 on the cable plug as shown RESULTS If the meter does not read 120 VAC replace the cable the meter does read 120 VAC go to step 3 E 1995 0 Smith Technical Information Water Products Co 48 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont ES omm MP AT HVAC Ao MVa 1 5 AMP AT 41 HIGH LIMIT
37. air supply venting and electrical work are required Qualifications i gt i Reproduction No duplication or reproduction of this book may be made without the express of this written authorization of Smith Water Products Company Workbook 1995 0 Smith Technical Information Water Products Co 1 Irving Texas FPS FPSE FPD TECHNICAL TRAINING SERVICE WORKBOOK TABLE OF CONTENTS SUBJECT PAGE SUBJECT PAGE Choosing the Best Water Heater Service and Operation Introduction 3 FPS 40 amp 50 When to choose the FPS 3 sequence of Operation 21 When to choose the FPSE 4 Wiring Diagram 22 When to choose the FPD 5 Troubleshooting Index 23 Venting Installation Parts List 40 Interior clearances FPS FPSE FPD 6 FPSE amp FPD 40 50 Exterior clearances FPS FPSE Sequence of Operation 42 Exterior clearances FPD 8 Wiring Diagram 43 Condensation 9 Troubleshooting Index 44 Sealing the vent 10 Parts List 66 Horizontal Length Caic FPS FPSE 11 FPS 75 Vertical Length Calc FPS FPSE 12 Sequence of Operation 68 Horizontal Length Calc FPD 13 Wiring Diagram 69 Vertical Length Calc FPD 14 Troubleshooting 70 Down Length Calc FPD 15 Parts List 94 Air for Combustion Part Information 96 Checking the draft 16 Service Checklist 97 Additional Problems 17 General Q amp A 99 Negative Pressure 19 Make up Air 20 61995 A 0 Smith Technical Information Water Products Co Irving Texas FPS FPSE FPD T
38. ard vent piping Q Can I vent the FPS unit vertically A The Series 216 amp 217 are sidewall venting only The Series 220 and higher can be vented either vertically or horizontally Will a snow riser kit be available A A snow riser kit can be constructed in the field in parts of the country where applicable The venting should be terminated a minimum of 12 inches above expected snowfall accumulations Avoid installations where snow drifting or prevailing wind conditions will interfere with the venting of the heater Installation of a condensate tee is necessary to prevent condensation from reaching the blower housing 1995 0 Smith Technical Information Water Products Co 99 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK QUESTIONS AND ANSWERS cont Is there a maximum distance that the vent cap can terminate from the exterior wall No as long as the overall equivalent length is not exceeded We would advise that the exterior piping have a slight negative slope and be properly supported and insulated The colder the vent piping the more condensation will be experienced Can this unit terminate in a window well No Clearances to an air inlet opening must be observed What is the maximum temperature at which of the sealant will function properly 400 deg F May paint the vent piping Yes Use a latex paint if it will adhere to the smooth surface Do not use oil based paint they contain
39. ating pressure 3 5 w c l p 10 w c Standing pilot FPSE amp FPD40 50 1 1 D Draws 1 63 amps 575 1 1 0 Draws 1 63 amps Gas Pressure FPS40 50 Closes at 2 5 w c for natural Switch Closes at 6 5 w c for propane Vent High Limit FPS75 Opens at 190 closes at 150 Vent Material All models PVC Class 160 ASTM D 2241 Schedule 40 ASTM D 1785 or Cellular Core Schedule 40 DWV ASTM F 891 Schedule 40 CPVC ASTM F 441 or ABS ASTM D 2661 pipe The fittings other than the TERMINATION TEE should be equivalent to PVC DWV fittings meeting ASTM D 2665 Use CPVC fittings ASTM F 438 for CPVC pipe and ABS fittings ASTM D 2661 3311 for ABS pipe If CPVC or ABS pipe and fittings are used then the proper cement must be used for all joints including joining the pipe to the Termination Tee PVC Material 761995 0 Smith Technical Information Water Products Co 96 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK SERVICE CHECKLIST PROPER SEQUENCE OPERATION A FPS40 50 During standby is blower off yes no On a call for heat does gas valve open yes no Does gas pressure switch close yes no Does the blower come on yes no If so does the air pressure make yes no Does the solenoid open yes no Does main burner ignite yes no Does the thermostat satisfy yes no Comments _ PEERS A FPSE40 50 During standby is blower off yes no On a call
40. cal Information Water Products Co 101 irvina Texas LA SUTLE WATER PRODUCTS COMPANY A DIVISION OF A O SMITH CORPORATION FOR ADDITIONAL INFORMATION CONTACT A O SMITH TECHNICAL INFORMATION DEPARTMENT AT 1 800 527 1953
41. cedures 1995 Smith Technical information Water Products Co 50 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY shooting cant NO CALL FOR HEAT First make the Preliminary Checks see page 45 then perform each of the following tests until cause of the failure is determined 1 Blower Test 2 Cable Test PRELIMINARY CHECKS EXCEPTIONS 4 Thermostat should not be calling for heat See page 50 When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC Cautions 01995 A 0 Smith Technical Information Water Products Co 91 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No call for heat cont shooting cont iue PE bi nr BLOWER TEST EUR SET UP THE TEST Disconnect the 4 wire cable from the blower control box as shown RESULTS If then the blower continues to run replace the blower the blower stops 5 to Step 2 1995 0 Smith Technical Information Water Products Co
42. cont FPD VENTING CALCULATIONS HORIZONTAL INTAKE VENT MAXIMUM 25 EQUIVALENT FEET EXHAUST VENT MAXIMUM 25 EQUIVALENT FEET 9M ELBOW 5 FEET A ELBOW 2 5 FEET MAXIMUM OF 4 ELBOWS IN EACH VENT DO NOT INCLUDE TERMINATION ELBOWS IN CALCULATIONS SSS ee ey WATER PRODUCTS COMPANY The FPD Sealed Shot features two pipe system with a fresh air intake vent an exhaust vent Intake and exhaust elbows must be on same surface of the house A maximum of 25 equivalent feet may be used in the intake vent system and a maximum of 25 equivalent feet may also be used in the exhaust vent However excluding the termination elbow you can have no more than four elbows in each vent Horizontal Venting Calculations FPD Since improper venting is a chief cause of heater malfunction careful planning adherence to these venting requirements will minimize service calls and ensure proper operation 01995 0 Smith Technical Information Water Products Co 13 Irving Texas FPS FPSE FPD TECHNICAL TRAINING SERVICE WORKBOOK VENTING INSTALLATION cont FPD VENTING CALCULATIONS VERTICAL INTAKE VENT MAXIMUM 25 EQUIVALENT FEET EXHAUST VENT MAXIMUM 25 EQUIVALENT FEET INTAKE 90 ELBOW 5 FEET VENT 45 ELBOW 2 5 FEET MAXIMUM OF 4 ELBOWS IN EACH VENT DO NOT INCLUDE TERMINATION ELBOWS IN CALCULATIONS LATIO SS EVI HaT EE WATER PRODUCTS COMPANY
43. continuity replace pilot valve the meter does read continuity check gas supply 61995 45 1 0 Smith Technical Information Water Products Co 60 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY cont CALLING FOR HEAT PILOT IS LIT NO MAIN BURNER First make the Preliminary Checks see page 45 then perform each of the following tests until cause of the failure is determined 1 MV PV MV Test 2 Main Valve When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC Cautions 1995 Smith Technical Information Water Products Co 61 Irving Texas Trouble shooting cont 1995 A 0 Smith FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner cont 32 59 4 Unus Bic 5 4 CER pe 9 ES Eso g2 Reb 525 me entr
44. e items if problem necessary as you would on any standard residential gas water heater 61995 A 0 Smith Technical Information Water Products Co 92 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont MAIN BURNER PROBLEMS The following are possible causes of main burner problems Trouble shooting cont 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 RESULTS If Any of the Preliminary Checks reveala repair or replace these items if problem necessary as you would on any standard residential gas water heater 1995 A 0 Smith Technical Information Water Products Co 93 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 PARTS LIST A Soar _ m T WATEA pnoDUcrs GAS RESIDENTIAL WATER HEATER PARTS LIST MODELS FPS 75 SERIES 230 231 232 233 TEMP woke M X34 PILOT BURNER WITH IGNITER A O SMITH WATER PRODUCTS CO INC PSD 1 269 PRINTED IN U S A 5621 W 115TH STREET ALSIP ILLINOIS 60482 1 800 433 2545 August 1995 1995 Smith Technical Information Water Products Co 94 Irving Texas FPS FPSE FPD TECHNICAL
45. he switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 1995 s 9 A 0 Smith Technical Information Water Products Co 26 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont i g hi p a 1 ET 1724 BLOWER TEST SET UP THE TEST Disconnect the 4 wire cable from the fan control box then using an insulated jumper wire caution 120 VAC jump between pins 3 and 4 on receptacle as shown RESULTS If the fan does not run replace the fan assembly the fan does run go to Step 2 1995 Smith Technical Information Water Products Co 27 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER DOES NOT RUN cont shooting cont CABLE TEST S TEST UP Reconnect the 4 wire cable onto the fan control box T 2 disconnect the cable from the control cover below then E using an insulated jumper wire jump between pins 3 and 4 on plug as shown P RESULTS If the fan does not run replace the cable the fan does run go to Step 3 01995 E A 0 Smith Technical Information Water Products Co 28 Irving Texas FPS FPSE FPD TECHNICAL TRA
46. hen eee eee H H HBBBPPPPPPPPPPPPPPPPFFFFFFFFEEEFEFFFFFFFFEEFPRu s 01995 Smith Technical Information Water Products Co 80 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont VENT HIGH LIMIT TEST SET UP THE TEST Reconnect the air pressure switch disconnect the load wire from the vent high limit then using a multimeter test for 24 VAC between wire and ground as shown Vent high limit may have shut the heater down due to excessive temperature See pages 10 11 12 17 18 RESULTS If then the meter does not read 24 VAC replace the vent high limit the meter does read 24 VAC go to Step 3 Line 24 VAC supply Load Wire carrying current onto connector 1995 A 0 Smith Technical Information Water Products Co 81 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont 9 Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont BLOWER TEST _ SET UP THE TEST Reconnect the wire to vent high limit disconnect the 4 wire cable from the blower control box using an insulated jumper wire jump between pins 1 and 3 caution 120 VAC on plug receptacle then using a multimeter test for 24 VAC between pins 2 and 4 as shown RESULTS If
47. ine the exact cause Familiarize yourself with the sequence of operation study the wiring diagram and complete the preliminary checks then if those are OK go to the section of this workbook that applies to the condition and follow the tests GAS AND ELECTRIC ic J SWITCH CLOSES VON BWITCH 2 BLOWER ms S TGNITOR LIGHTS PILOT AND PROVES PILOT GROUND WIRE 1 THERMOSTAT CALLS FOR HEAT 7 MAIN VALVE OPENS 24 VOLTS A SS Se a Sa 5 PILOT VALVE OPENS WATER PRODUCTS 24 VOLTS COMPANY Thermostat calls for heat Blower activates Air pressure switch closes Ignition starts Pilot valve opens Ignitor lights pilot and proves pilot Main valve opens Main burner ignites Sequence of Operation a 1995 B A 0 Smith Technical Information Water Products Co 68 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Wiring This wiring diagram only applies to model FPS 75 series 230 233 Diagram WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER CONNECTION COADSET TO MOTOR G g 120VA C EM 6 120V cYcLES Ji iE I b BLOWER pd SERE P
48. ire from the pilot valve then using a multimeter test for continuity at pilot valve as shown RESULTS If then the meter does not read continuity replace the valve the meter does read continuity check the gas supply 81995 gt A0 Smith Technical Information Water Produets Co Irving Taxas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY CALLING FOR HEAT PILOT IS LIT NO MAIN BURNER First make the Preliminary Checks see page71 then perform each of the following tests until cause of the failure is determined 1 MV MV PV Test 2 Main Valve Test 1995 0 Smith Water Products Co 89 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat pilot is lit no main burner shooting cont cont MODEL No SP 745 v INPUT 24 50 60 Hz SPARK GAP 7 64 IN TH CURRENT 150 AMP PV MV AT 24 V A OUTPUT OR MV 1 5 AMP AT 5 pf IMV PVMVTEST 4 SET UP THE TEST Using a multimeter test for 24 VAC between MV and MV PV on 1 1 0 as shown RESULTS If the meter does not read 24 VAC replace the 1 1 0 the meter does read 24 VAC go to Step 2 E 1995 AO Smith Technical Information Water Products Co 90 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND S
49. itional make up air ducts 1995 A 0 Smith Technical Information Water Products Co 17 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont CONDITION CAUSE SOLUTION Excessive heat Inlet air damper not Free air damper build up in PVC opening completely venting Blower does not run when Replace entire main burner fires blower assembly Wrong main burner Install correct orifice size orifice Intermittent Build up of If cycling occurs fan cycling pressure in the more than twice per hour without burner main burner tube see troubleshooting operation between thermostat procedures Propane Only gas valve and solenoid gas valve A malfunctioning vent damper may also cause excessive heat buildup the PVC vent piping If unable to free the damper replace the entire combustion control tee If blower does not run when the main burner fires replace the control box Also check burner orifice for correct size Intermittent cycling of the fan without main burner operation indicates a build up of pressure in the main burner tube between the thermostatic gas valve and solenoid gas valve 1995 0 Smith Technical Information Water Products Co 18 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont NEGATIVE PRESSURE Negative Diagnosing pilot outage complaints requires an examination of the environment in
50. mation Water Products Co 33 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY CALL FOR HEAT NO MAIN BURNER First make the Preliminary Checks see page 24 then perform each of the following tests until cause of the failure is determined 1 Air Pressure Switch Test i2 Cable Test 3 Harness Test When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC 1995 E 0 Smith Technical Information Water Products Co 34 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No main burner cont z pem r f t I 5 ud a d 1 S Hie FT NCC T A TaT v 1 i shooting cont La ON er oy ee Br bey rok a Jin i Pies i ig EU a LI CS a a AIR PRESSURE SWITCH TEST SET UP THE TEST Disconnect the 4 wire cable from the fan control box u
51. o Ml Pre 181706 181708 181706 181706 a Thermostat eee re et eee C 181705 181705 181706 181705 Tube Burner Natural Gas _ 1814826 181482 7 181482 11 181482 12 Propane Gas 2 ens vee 1814826 181482 7 181792 11 181792 12 49 Tube 21067 53 21067 33 160374 28 160374 28 50 Tube PR _ _ 23330 23330 23330 23330 51 Tube Rear Supply WIE Box ate m 181772 181772 1 57 Vae DAN 2627386 26273 6 42037 42037 1 53 Gas Natural Gas Gru haat oa haa 181721 181721 181950 181950 Propane Gas 2 181722 181722 182192 182192 54 Man Gas Shuto 181727 181737 181737 181737 55 Wwe Ground _ 181736 181736 181726 2 181736 2 56 Wire Hamess 1 181609 181609 181952 181952 Sealant must conform to MIL A 46106A type 1 2 CFR 175 300 be able to withstand constant temperature of 450 F and a iow of 745 F Equal to National Polymer Products Seaicon 11 1995 A 0 Smith Water Products Co Technical Intormation Irving Texas 6 7 FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION 89 Service amp Most problems will first appear as blower malfunctions either a blower that does Operation not run or a blower that runs constantly In these instances further trouble Introduction shooting is required to determ
52. oes not read continuity the meter does read continuity FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont E FPD 40 and 50 SERVICE AND OPERATION cont Trouble shooting cont PILOT PROBLEMS The following are possible causes 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 to 1 2 5 A leak in pilot tube will cause candling RESULTS If then Any of these reveal a problem repair or replace these items as you would on any standard residential gas water heater 1995 A 0 Smith Technical Information Water Products Co 54 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont MAIN BURNER PROBLEMS _ 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
53. omer complains of smelling burnt gas around the water heater first check for vent gases that may be leaking from the PVC joints or around the area between the blower assembly and water heater Seal all leaks with the high temperature silicone sealant provided Seal vent joints C Blocked vent lear vent blockage Check for restrictions in the venting 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 CONDITION CAUSE SOLUTION Sooting Inlet air damper not operational of inlet Moisture in tube on Condensation Install condensate blower tee Pilot Outage or pilot gas Insufficient make up Install make up gas odor on standby air or back air ducts drafts in vent Correct operation of inlet air damper Improper venting is also a major cause of sooting in water heaters If you experience sooting with the POWER SHOT check that the inlet air damper swings freely and opens 1 1 4 when the blower is running If water is dripping from the blower condensate is the culprit To correct the problem install a condensate tee and pipe to drain If the customer complains of nuisance pilot outage or pilot gas odor on standby this may be due to a lack of combustion air or other appliance exhaust fans clothes dryers etc creating a backdraft in the FPS venting In either case install add
54. or combustion is drawn from inside the building make up air is required The FPSE and 575 use electronic spark ignition 51995 AO Smith Technical Information Water Products Ca 4 Iming Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cont EVALUATING THE INSTALLATION abated FPD Closed combustion required Back draft unacceptable Super insulated homes Tem Vapor Barrier When to The FPD Sealed Shot with its own dedicated air vent and exhaust vent is the choose the heater of choice in installations where closed combustion is required for FPD example in living quarters The FPD is recommended when installing a water heater in a super insulated energy efficient house with sealed gaskets around the windows and doors a 1995 A D Smith Technical Information Water Praducts Ca 5 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION INTERIOR CLEARANCES FPS FPSE SRUTH WATER PRODUCTS COMPANY Interior All interior clearance requirements indicate distances between the heater and Clearances combustible materials FPS FPSE Clearance of 0 is allowed from PVC vent to combustibles FPD Clearances allowed for the FPS40 50 FPSE40 50 and FPD40 50 are Sides and rear 0 Front 4 Top 21 Clearances allowed for the FPS75 are Sides and
55. quired to determine the exact cause Familiarize yourself with the sequence of operation study the wiring diagram and complete the preliminary checks then if those are OK go to the section of this workbook that applies to the condition and follow the tests FPS SEQUENCE OF OPERATION ed PU cm 1 THERMOSTAT CALLS Eas soLENOID GAS VALVE GAS PRESSURE SWITCH Thermostat calls for heat Main gas valve opens Gas pressure switch closes Fan activates Air pressure switch closes Solenoid opens Main burner ignites Sequence of Operation 91935 4 0 Smith Technical Information Water Products Co 21 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Wiring following wiring diagram only applies to model FPS40 50 series 226 227 Diagram DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS 115 VOLT BEFORE OPERATING HEATER POWER SOURCE BLOWER MOTOR B SINGLE COIL SOL 115 1995 e A 0 Smith Technical Information Water Products Co 22 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble To troubleshoot the FPS you must understand its sequence of operation Review shooting that section if necessary In addition ins
56. r to the 1 1 0 for lack of continuity or loose connections correct any of these conditions if necessary then using a multimeter test for 24 VAC between wire and ground on the 1 1 0 as shown RESULTS If then the meter does not read 24 VAC replace wire the meter does read 24 VAC go to Step 4 1995 m Technical Information A 0 Smith Water Products Co 5 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont a9 Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont 4 gj El xi 92 nes i e Bt E PV TEST SET UP THE TEST Reconnect wire to TH terminal to 1 1 0 using a multimeter test for 24 VAC between PV pilot valve and PV MV on the 1 1 0 as shown RESULTS If the meter does not read 24 VAC the meter does read 24 VAC 1995 0 Smith Water Products Co 58 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont Reset ON OFF switch Visually checidorasparicat pilot 1 4 i he m
57. re yes no Does the installation have a mixing valve yes no If so is it operational yes no 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 Is the 120 VAC electrical power supply properly wired yes no Are all the control covers in place yes no Is the 120 VAC electrical power supply properly fused yes no D Flammables Are flammable materials located in the area of the water heater yes no Are flammable vapors located in the area of the water heater yes no Comments __ 1995 0 Smith Technical Information Water Products Co 98 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK QUESTIONS AND ANSWERS FPS MODELS Q What is the CFM of the blower A Maximum of 60 CFM Q Will the blower move more air through the unit than conventional venting and thereby cause less heat to be transferred into the water No The unit has been tested to the DOE test methods for recovery efficiency using the minimum and maximum amount of vent piping with the resulting GPH rates as shown on the spec sheet The baffle and air intakes of the heater still regulate chamber air flow Q Can this unit be vented to a chimney No The unit may have condensing flue gases which would attack mortar or stand
58. rear 2 Front 6 Top 24 1995 Smith Technical Information Water Products Co 6 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cont EXTERIOR CLEARANCES a ei Erren 2 o EG MER L ig ues ET ii n RUN tee PRODUCTS COMPANY Exterior Exterior installation clearance requirements are crucial and must be met to ensure Clearances compliance with all safety and code requirements If all clearances cannot be FPS met do not unpack the heater 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 1 above or 4 to the side of any Side of door or window 4 gable dormer or roof structure Above door or window 1 with building interior access Below a window 4 1 above snow level Above public walkway 7 Above ground or snow level 1 Air intake to a living space 3 above if air intake is within 10 1995 0 Smith Technical Information Water Products Co 7 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cont EXTERIOR CLEARANCES WATER COMPANY Exterior Exterior installation clearance requirements are crucial and must be met to ensure Clearances compliance with all
59. rmination end This slope should be no more than 1 8 per 5 feet of horizontal run no more than 1 total max 1995 0 Smith Technical Information Water Products Co 9 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cort SEALING THE VENT p z br SEAL BLOWER MOTOR TEE W a SEAL VENT JOINTS PIPE HANGERS HIGH TEMPERATURE SEALANT ILLUSTRATED IN PINK STANDARD CAULKING ILLUSTRATED IN GREEN FPS FPSE Sealing the Proper sealing of the vent system is essential for correct operation of the heater Vent On the initial firing of the heater check all joints in the system for a proper seal FPS especially where the blower motor joins the heater and at the PVC vent pipe FPSE connects to the blower If a blower joint leaks air it should be caulked with the FPD high temperature silicone sealant provided Other joints may be sealed with standard caulking The vent system should be supported every 3 feet of vertical run and every five 5 feet of horizontal run _ 1995 4 0 Smith Technical Information Water Products Co 10 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cont FPS FPSE VENTING CALCULATIONS mser TERMINATION TEE HORIZONTAL 90 ELBOW 5 FEET 45 ELBOW 2 5 FEET MAXIMUM OF 4 ELBOWS DO NOT INCLUDE TERMINATION TEE IN CALCULATIONS
60. safety and code requirements If all clearances cannot be FPD met do not unpack the heater All exterior clearance requirements for the FPD are measured from the vent termination Min clearances for side wall venting Min clearances for vertical Inside corner 3 1 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 1 above snow level Above ground or snow level 1 Air intake to a living space above if air intake is within 10 1995 e 0 Smith Technical Information Water Products Co 8 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cont CONDENSATION eem nlii FPS FPSE FPD WATER PRODUCTS Condensation In certain installations you may experience condensation in the venting This FPS will be most prevalent in the colder climates and especially with relatively long FPSE runs of venting in unheated rooms To prevent the damaging condensation FPD from draining into the blower and or water heater install the condensate tee provided with the heater It goes in the exhaust vent as close as possible after the blower elbow Attach a 3 8 plastic tube for the drain as shown Configure a loop in the tube at least 1 down from tee to prevent flue gases from escaping Install the venting with a slight downward slope toward the te
61. sing an insulated jumper wire jump between pins 3 and 4 on the receptacle then using a multimeter test for 120 VAC between pins 1 and 2 as shown RESULTS If the meter does not read 120 VAC replace the air switch the meter does read 120 VAC 9o to Step 2 61995 A 0 Smith Technical Information Water Products Co 35 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont amp Trouble BLOWER RUNS CONSTANTLY No main burner cont shooting cont i im Berg 1 F E nd mU ua I x re Vm c a A ee a CABLE TEST UP THE TEST Reconnect the 4 wire cable to the fan control box disconnect the 4 wire cable from the control box cover below using an insulated jumper wire jump between pins 3 and 4 on the plug then using a multimeter test for 120 VAC between pins 1 and 2 as shown RESULTS the meter does not read 120 VAC replace the cable the meter does read 120 VAC i go to Step 3 1995 0 Smith Technical Information Water Products Co 36 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble BLOWER RUNS CONSTANTLY No main burner cont shooting cont SOLENOIDS VALS am GAS 7 PRESSURE 7 SWITCH s i 25 3 i m
62. solvents which may attack the PVC May l use an FPS to replace a Sidewinder 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 pipe and prevent air drafts into the house If the vent is blocked will the blower motor continue to run Yes but the air pressure switch will open and interrupt power to the gas solenoid valve shutting off main burner gas flow Will increasing the vent pipe size allow a longer equivalent feet run No the 3 inch vent is the only sized venting approved 91995 0 Smith Technical Information Water Products Co 100 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK ADDITIONAL INFORMATION If the inlet air damper does not open to provide dilution air the PVC vent will sag 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 For Further Contact A O Smith Technical Information Center Info Rochelle Park Suite 200 600 E John Carpenter Freeway Phone Irving Texas 75038 1 800 527 1953 61995 A 0 Smith Techni
63. tallation problems can cause the heater to malfunction Review sections on venting and checking draft Most problems with Preliminary Checks Pages 24 and 25 Blower does not run Page 26 Blower runs constantly No call for heat Blower runs constantly Page 34 No main burner Pilot Problems 38 i Main Burner Problems Page 39 1995 A 0 Smith Technical Information Water Products Co 23 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble shooting cont PRELIMINARY CHECKS Gas valve knob is in ON position Pilot is burning 120 VAC is supplied to heater Thermostat is calling for heat See page 25 Connection between blower motor and blower control box is secure Heater is installed per manual RESULTS If Any of the Preliminary Checks reveala repair or replace these items as you problem would on any standard residential gas water heater Cautions When performing the following troubleshooting procedures you will be required to jump out parts of the electrical circuit Turn the switch on the blower off when inserting the jumper wire Then turn the switch back on Use extreme caution as you may be working with 120 VAC ee eee 1995 0 Smith Technical Information Water Products Co 24 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND O
64. the meter does not read 24 VAC replace the blower the meter does read 24 VAC go to Step 4 01995 5 0 Smith Technical information 82 Irving Texas Water Products Co Trouble shooting cont CABLE TEST FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont BLOWER RUNS CONSTANTLY Calling for heat no pilot cont 4 leg SET UP THE TEST Reconnect the 4 wire cable to the blower control box disconnect the cable from receptacle on door below using an insulated jumper wire jump between pins 1 and 3 caution 120 VAC on cable plug then using a multimeter test for 24 VAC between pins 2 and 4 as shown RESULTS If the meter does not read 24 VAC replace the cable the meter does read 24 VAC go to Step 5 61995 0 Smith Water Products Co 83 Technical Information Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont 3 Trouble BLOWER RUNS CONSTANTLY Calling for heat no pilot cont shooting cont oeil HIGH LIMIT TEST UP THE TEST Reconnect the cable to receptacle on the door remove covers from door and thermostat inspect wire between connector and high limit for lack of continuity or loose connections correct either of these conditions if necessary remove one of the wires from the high limit then
65. up Check gas pressure and air flow through heater and venting RESULTS If Any of the Preliminary Checks reveala repair or replace these items if problem necessary as you would in on any standard residential gas water heater 01995 A 0 Smith Technical Information Water Products Co 65 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 PARTS LIST FPD 40 and 50 PARTS LIST PSD Paria INS RESIDENTIAL WATER HEATER PARTS LIST FPSE PGSE 40 AND 50 SERIES 226E FPD 40 AND 50 SERIES 226 227 8821 W 145TH STREET ALSIP ILLIMOIS 604022 1 800 433 2545 July 1995 PRINTED if LUSA 1995 8 0 Smith Technical Information Water Products Co 66 Irving Texas FPS FPSE FPD TECHNICAL TRAINING AND SERVICE WORKBOOK 222 223 Senes 226 227 FPSE 40 5 50 m Descnphon PGSE40 PGOE 0 FPD 49 FPD 50 4 gt easa 181450 181450 2 Arode MA EEUU 43816 38 43816 38 43817 29 42817 35 3 Hanger 181360 181360 181260 181360 4 Biower Assembly 181616 181616 181843 181843 5 do Top Lower Supply we ee tt 181488 181489 6 Box Bottom Lower Ar Supply MA T 181490 181490 7 Bracket Gas Valve 181709 181709 181898 181898 7 Bracket Gas Valve Series 227 Only see 4 4 182194 182194 8 Burner Assembly Natural Gas 181732 181732 2 181732 12 181722 4 Propane Gas 181732 1 81732 3 181732 12 18173214 4 Burner with

A.O. Smith fps50 Specification Sheet

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