A.O. Smith FPSE-75 Owner's Manual
Contents
1. Hotter water increases the risk 2 Turn the ON OFF switch on the blower control box of scald injury Consult the instruction to the OFF position manual before changing temperatures Set the thermostat to the lowest setting Turn A WARNING TURN OFF ALL ELECTRIC thermostat dial fully counterclockwise until it POWER BEFORE SERVICING stops TO TURN OFF GAS TO APPLIANCE A Set thermostat to the lowest setting B Turn off all the electric power to the appliance if service is to be performed 13 A CAUTION THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE THERMOSTAT TO CONTROL WATER TEMPERATURE HOT WATER TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE PAINFUL SCALDING WITH POSSIBLE SERIOUS AND PERMANENT INJURY THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON S AGE AND THE TIME OF EXPOSURE THE SLOWER RESPONSE TIME OF CHILDREN AGED OR DISABLED PERSONS INCREASES THE HAZARDS TO THEM NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER TAP OR TO DRAW THEIR OWN BATH WATER NEVER LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A BATHTUB OR SHOWER THE WATER HEATER SHOULD BE LOCATED IN AN AREA WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS IF A SUITABLE AREA IS NOT AVAILABLE ACOVER SHOULD BE INSTALLED OVER THE THERMOSTAT TO PREVENT TAMPERING Suitable covers are available through A O Smith Water Products Company 5621 W 115th Street Alsip IL 60803 It is recommended t2. WHETHER DIRECT OR INDIRECT AND WHETHER ARISING IN CONTRACT OR IN TORT Some states do not allow the limitation or exclusion of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Fill out and keep with water heater IMPORTANT INFORMATION Model Number Serial Number Installation Information Date Installed Company s Name Street or P O Box City State and Zip Code Phone Number Plumber s Name
3. for placement on the blanket directly over the existing labels Do inspect the insulation blanket frequently to make certain it does not sag thereby obstructing combustion air flow INSTALLATION REQUIRED ABILITY INSTALLATION OR SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED PLUMBING ELECTRICAL AIR SUPPLY VENTING AND GAS SUPPLY ARE REQUIRED GENERAL The heater is designed to operate on natural or propane gases HOWEVER MAKE SURE the gas on which the heater will operate is the same as that specified on the heater model and rating plate The installation must conform to these instructions and the local code authority having jurisdiction In the absence of local codes conform to the latest edition of National Fuel Gas Code ANSI Z223 1 NFPA 54 and the National Electric Code NFPA 70 The former is available from the Canadian Standards Association 8501 East Pleasant Valley Road Cleveland OH 44131 and both documents are available from the National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 GROUNDING The water heater when installed must be grounded in accordance with local codes or in the absence of local codes In the United States The National Electric Code ANSI NFPA 70 HIGH ALTITUDE INSTALLATION A CAUTION INSTALLATIONS ABOVE 2000 FT REQUIRE REPLACEMENT OF THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL FUEL GAS COD
4. metal grills or louvers UNCONFINED SPACE In buildings of conventional frame brick or stone construction unconfined spaces may provide adequate air for combustion ventilation and dilution air for power venter If the unconfined space is within a building of tight construction building using the following construction weather stripping heavy insulation caulking vapor barrier etc air for combustion ventilation and venter dilution must be obtained from outdoors The installation instructions for confined spaces must be followed CONFINED SPACE When drawing combustion and dilution air from inside a conventionally constructed building to a confined space such a space shall be provided with two permanent openings ONE WITHIN 12 INCHES OF THE ENCLOSURE TOP AND ONE WITHIN 12 INCHES OF THE ENCLOSURE BOTTOM Each opening shall have a free area of one square inch per 1000 Btuh of the total input of all appliances in the enclosure but not less than 100 square inches If the confined space is within a building of tight construction air for combustion ventilation and power venter dilution must be obtained from outdoors When directly communicating with the outdoors or communicating through vertical ducts two permanent openings located in the above manner shall be provided Each opening shall have a free area of not less than one square inch per 4000 Btuh of the total input of all appliances in the enclosure If horizontal ducts
5. must be added to the end of the vent system before terminating into the 3 tee The total system cannot exceed 60 equivalent feet of 4 venting where each elbow is equal to 5 feet of straight pipe VENT IU w 2 PPE FROM HEATER FIGURE 4 4 TO Z REDUCER NOTE This unit can be vented using only 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 PVC Materials should use ASTM D 2564 Grade Cement CPVC Materials should use ASTM F 493 Grade Cement and ABS Materials should use ASTM D 2235 Grade Cement NOTE 1 For water heaters in locations with high ambient temperatures above 100 F and or insufficient dilution air it is recommended that CPVC or ABS pipe and fittings be used 2 The SUPPLIED VENT TERMINAL must be used in all cases 4 The temperature of the flue gases leaving the blower is about 160 F after mixing the dilution air in the inlet adapter of the blower Even with high concentrate of room air taken into the vent system for dilution air there will be som
6. operate the water heater until proper adjustments or repairs are made to provide adequate draft through the gas vent AIR SUPPLY BOX P odi DILUTION AIR DILUTION AIR OPENING BOTH SIDES AND BACK FIGURE 11 D Next turn on all other fuel burning appliances within the same room so they will operate at their full input Repeat step C above POWER VENTER MAINTENANCE The FPSE 75 must be inspected quarterly Points of inspection are 1 MOTOR Motor must rotate freely Oil every three months of operation with 4 drops of SAE 20 oil see fig 12 WHEEL Wheel must be clean of soot ash or any other coating which inhibits either rotation or air flow Remove all foreign material from vent system before operating AIR SUPPLY BOX Every month check operation and make sure nothing is blocking dilution air entrance The pressure switch part inside the power venter must be open and free from deposits of soot carbon etc For safety and satisfactory operation it is recommended that the heater be checked once a year by a competent service person 15 OPENING FOR OILING MOTOR AIR SWITCH BLOWER MOTOR ON OFF SWITCH CAUTION HARNESS HAS 120VAC IN OPERATION THERMOSTAT amp GASVALVE et 6 7 i sssnnsridi SIDE VIEW OF BURNER ASSEMBLY FIGURE 12 T amp P VALVE At least once a year the temperature and pressure relief valve must be checked to ensure that it is in opera
7. points below 1 The exit terminals of a mechanical vent system shall be not less than 7 feet above grade when located adjacent to public walkways 2 A venting system shall terminate at least 3 feet above any forced air inlet located within 10 feet 3 The venting system shall terminate at least 4 feet below 4 feet horizontally from or 1 foot above any door window or gravity air inlet into any building 4 The manufacturer also recommends that the vent system termination not be installed closer than 3 feet from an inside corner of an L shaped structure and not be less than 1 foot above grade The vent shall terminate a minimum of 12 above expected snowfall level to prevent blockage of vent termination 5 The vent termination shall not be mounted directly above or within 3 feet horizontally from an oil tank vent or gas meter to avoid potential freeze up from condensation Plan the vent system layout so that proper clearances are maintained from plumbing and wiring Vent pipes serving power vented appliances are classified by building codes as vent connectors Required clearances from combustible materials must be provided in accordance with information in this manual under LOCATION OF HEATER and VENT TERMINAL INSTALLATIONS and with the National Fuel Gas Code and local codes PLANNING THE VENT SYSTEM Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal 1 Lay
8. the finished job before start up F Contact the manufacturer supplier or competent consulting agency if you have any questions about the application or installation of PVC and CPVC pipe G Take the time and effort to do a professional job Shortcuts will only cause you problems and delays in start up By far the majority of failures in PVC and CPVC systems are the result of shortcuts and or improper joining techniques 2 SELECTION OF MATERIALS Cutting Device Saw or Pipe Cutter Deburring Tool Knife File or Beveling Machine 2 and above Brush Pure Bristle Rag Cotton Not Synthetic Primer and Cleaner Solvent Cement PVC for PVC Components and CPVC for CPVC Components Containers Metal or Glass to hold Primer and Cement Select the type of PVC or CPVC materials to be used on the basis of their application with respect to chemical resistance pressure rating temperature characteristics etc Insertion Tool Helpful for larger diameter pipe and fittings 6 and above PRIMER It is recommended that Tetrahydrofuran THF be used to prepare the surfaces of pipe and fittings for solvent welding Do not use water rags gasoline or any other substitutes for cleaning PVC or CPVC Surfaces A chemical cleaner such as MEK may be used CEMENT The cement should be a bodied cement of approximately 500 to 1600 centipoise viscosity containing 10 2096 by weight virgin PVC material solvated with tetrahydrof
9. unusual sound such as air escaping through the pipe as the water begins to flow THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN INSULATION BLANKETS Insulation blankets available to the general public for external use on gas water heaters are not necessary with A O Smith products The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters Your A O Smith water heater meets and exceeds the National Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary warnine Should you choose to apply an insulation blanket to this heater you should follow these instructions See Figure 1 for identification of components mentioned below Failure to follow these instructions can restrict the air flow required for proper combustion potentially resulting in fire asphyxiation serious personal injury or death Do not cover the gas valve or temperature amp pressure relief valve Do not allow insulation to come within 2 of the air inlet box to prevent blockage of the dilution air Donotallow insulation to come within 2 of the floor to prevent blockage of combustion air flow to the burner Do not cover the instruction manual Keep it on the side of the water heater or nearby for future reference Do obtain new warning and instruction labels from A O Smith
10. ALLED DRIP LEG MUST BE INCORPORATED IN THE PIPING FIG 1 The dirt leg must be readily accessible Install in accordance with recommendations of serving gas supplier Refer to the latest edition of ANSI Z223 1 To prevent damage care must be taken not to apply too much torque when attaching gas supply pipe to thermostat gas inlet The thermostat inlet has a pad for use with a backup wrench Apply joint compounds pipe dope sparingly and only to the male threads of pipe joints Do not apply compound to the first two threads Use compounds resistant to the action of liquefied petroleum gases Do not use teflon tape on thermostat fittings CONNECTION OF GAS PIPE 1 When connecting gas pipe to unit apply wrench to flange only Note Do not use wrench on gas valve or gas valve bracket 2 PERFORM THE GAS LEAK TEST ANY TIME WORK IS DONE ON A GAS SYSTEM TO AVOID THE POSSIBILITY OF FIRE OR EXPLOSION WITH PROPERTY DAMAGE PERSONAL INJURY ORLOSS OF LIFE The Gas Leak Test is performed as follows Paint pipe connections upstream of gas control with a rich soap and water solution to test for leaks before operating main burner Bubbles indicate gas leak To stop leak tighten pipe connections After piping connections are checked turn on main burner With main burner in operation paint pipe joints 4 MINIMUM 3 ABOVE ANY OUTSIDE AIR INTAKE WITHIN 10 VENT ee VENT HOOD MUST BE um MOUNTED 4 MINIMUM BELOW WINDOWS VENT HOO
11. BLOWER MOTOR 2 2 BLOWER MOTOR ROTATES BLOWER WHEEL A BLOWER WHEEL SPEED INCREASES B WHEEL SPEED INCREASES AIR PRESSURE SWITCH CONTACTS CLOSE 3 120 VAC FLOWS TO HOT SURFACE IGNITER NOTE THE CONTROL MODULE ON THIS UNIT WILL TRY A MAXIMUM OF THREE TIMES TO LIGHT THE UNIT CYCLE CAN BE RESTARTED AT ANY TIME BY TURNING OFF SWITCH AND THEN TURNING BACK ON IF UNIT HAS GONE THROUGH THREE CYCLES AND DID NOT LIGHT THEN REPAIRMAN SHOULD BE CALLED TO CHECK OPERATION OF HEATER 4 MAIN BURNER IGNITES A GAS FLOWS TO MAIN BURNER PORTS AND IS IGNITED 5 GAS VALVE SENSES BURNER FLAME 6 BURNERHEATS WATER A BURNER HEATS WATER TO THERMOSTAT SETTING B CONTACTS IN THERMOSTAT OPEN C CYCLE IS COMPLETED A WARNING DO NOT BY PASS ANY CONTROLS TO MAKE HEATER OPERATE OPERATE ONLY AS WIRED FROM FACTORY TROUBLESHOOTING For your safety water heater service should be performed only by a qualified service technician Read the GENERAL SAFETY INFORMATION section first PROBLEM NOT ENOUGH OR NO HOT WATER VENT PIPE TOO HOT ABOVE 170 F YELLOW FLAME CONDENSATION WATER LEAKS LEAKING T amp P VALVE HOT WATER ODORS OR COLOR Referto CATHODIC PROTECTION POSSIBLE MALFUNCTION 1 Blower will not run SERVICE TO BE PERFORMED ON OFF control switch turned off Turn switch to the ON position Blower unplugged Plug blower back into 115 vac outlet No power at outlet Repair service to outlet O
12. D MUST BE MOUNTED 1 MINIMUM ABOVE DOORS AND WINDOWS T MINIMUM 1 MINIMUM VENT TERMINAL VENT HOOD MUST BE MOUNTED 4 MINIMUM AWAY HORIZONTALLY 7 FROM DCORS AND WINDOWS 3 MINIMUM FROM AN INSIDE CORNER including flanges pilot gas tubing connections and control inlet and outlet with rich soap and water solution Bubbles indicate gas leak To stop leak tighten flange screws joints and pipe connections Replace part if leak can t be stopped DISCONNECT THE APPLIANCE AND ITS INDIVIDUAL SHUT OFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1 2 PSI 3 5 kPa GAS SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM THE HEATER FOR TEST PRESSURES AT 1 2 PSI 3 5 kPa OR LESS THE APPLIANCE NEED NOT BE DISCONNECTED BUT MUST BE ISOLATED FROM THE SUPPLY PRESSURE TEST BY CLOSING THE MAIN MANUAL GAS VALVE BEFORE PLACING THE HEATER IN OPERATION CHECK FOR GAS LEAKAGE USE SOAP AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THIS PURPOSE DO NOT USE MATCHES CANDLES FLAME OR OTHER SOURCES OF IGNITION TO LOCATE GAS LEAKS RELIEF VALVE A NEW TEMPERATURE AND PRESSURE RELIEF VALVE COMPLYING WITH THE STANDARD FOR RELIEF VALVES AND AUTOMATIC GAS SHUT OFF DEVICES FOR HOT WATER SUPPLY SYSTEMS ANSI Z21 22 LATEST EDITION MUST BE INSTALLED IN THE HEATER IN THE MARKED OPENING PROVIDED THE VALVE MUST BE OF A SIZE INPUT RATING THAT WILL BE ADEQUATE FOR YOUR SIZE HEAT
13. E ANSI Z223 1 NFPA 54 FAILURE TO REPLACE THE ORIFICE COULD RESULT IN IMPROPER AND INEFFICIENT OPERATION OF THE APPLIANCE PRODUCING CARBON MONOXIDE GAS IN EXCESS OF SAFE LIMITS WHICH COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH CONTACT YOUR GAS SUPPLIER FOR ANY SPECIFIC CHANGES WHICH MAY BE REQUIRED IN YOUR AREA A O SMITH BUILDS SOME MODELS SPECIFICALLY FOR HIGH ALTITUDE SERVICE PLEASE CHECK THE RATING PLATE BEFORE MAKING CHANGES LOCATION OF HEATER When installing the heater consideration must be given to proper location Location selected should be as close to the wall as practicable with adequate air supply and as centralized with the water piping system as possible The heater is design certified by the American Gas Association for installation on combustible flooring in a closet having minimum clearances from combustible material of 2 clearance from sides and rear 6 from the front and 24 from the top Standard clearance If clearances stated on the heater differ from standard clearances install water heater according to clearances stated on heater A minimum clearance of 4 must be allowed for access to replaceable parts such as the thermostats drain valve and relief valve A top clearance of 24 should be allowed for blower assembly service Adequate clearance for servicing this appliance should be considered before installation such as changing the anodes etc Minimum clearances for proper operation ar
14. ER Check the metal tag on the relief valve and compare it to the heater s rating plate The pressure rating of relief valve must not exceed the working pressure shown on the rating plate of the heater In addition the hourly Btu rated temperature steam discharge capacity of the relief valve shall not be less than the input rating of the heater NO VALVE IS TO BE PLACED BETWEEN THE RELIEF VALVE AND TANK DO NOT PLUG THE RELIEF VALVE The drain line connected to this valve must not contain a reducing coupling or other restriction and must terminate near a suitable drain to prevent water damage during valve operation The discharge line shall be installed in a manner to allow complete drainage of both the valve and line DO NOT THREAD PLUG OR CAP THE END OF THE DRAIN LINE VENTING wanna NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION FIRE EXPLOSION OR ASPHYXIATION VENT PIPE TERMINATION The first step is to determine where the vent pipe will terminate The vent may terminate through the roof see Figure 9 or through a sidewall see Figure 8 IMPORTANT The vent system must terminate so that proper clearances are maintained as cited in local codes or the latest edition of the National Fuel Gas Code ANSI Z223 1 7 3 4e and 7 8a b For your convenience instructions on proper installation through a sidewall are provide in Figure 3 and the numbered
15. GAS WATER HEATERS OWNER S MANUAL Thank you for buying this energy efficient water heater from A O F PSE 75 Smith Water Products Company We appreciate your confidence in our products with Hot Surface Ignition You should thoroughly read this manual before installation and and SmartValve or operation of this water heater Please pay particular attention to the important safety and operating instructions as well as the WARNING and CAUTIONS EFFICIENCY RATING CERTIFIED ama WARNING If the information in these instructions is not followed exactly a TABLE OF CONTENTS fire or explosion may result causing property damage personal injury or PAGE death GET TO KNOW YOUR WATER HEATER 2 Do not store or use gasoline or other GENERAL SAFETY INFORMATION 34 flammable vapors and liquids in the INSTALLATION 4 12 vicinity of this or any other appliance OPERATION 12 14 m MAINTENANCE AND WHAT TO DO IF YOU SMELL GAS TROUBLESHOOTING T Do not try to light any appliance TROUBLESHOOTING WITHTHE LED 18 Do not touch any electrical switch SERETUAIVES CO NOL USE any phone im your TROUBLESHOOTING GUIDE 19 building Immediately call your gas supplier WARRANTY 20 from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas A caution TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOUR SAFETY PLEASE READ THOROUGHLY BEFORE Installation and service must be INSTALLING A
16. INSULATION D OUTLET 120 VAC S VENT TERMINAL E FLUE BAFFLE T DRAIN VALVE F GASSUPPLY U IGNITER AND MAIN G MAINMANUAL GAS BURNER SHUT OFF VALVE V FLUE H GROUND JOINT UNION W DRAIN PAN J DIRT LEG X SMARTVALVE K OUTER DOOR Y CONTROL HARNESS L UNION Z AIR MIXING BOX M INLET WATER SHUT AA MOTOR amp BLOWER OFF VALVE BB DISCHARGE AIR ECO N COLD WATER INLET O INLET DIP TUBE P TEMPERATURE AND PRESSURE RELIEF VALVE INSTALL THERMAL EXPANSION TANK IF CHECK VALVE OR PRESSURE REDUCING VALVE IS USED IN SUPPLY WATER TEMEPRATURE ADJUSTING DIAL SMARTVALVE CONTROL SYSTEM U SIDE VIEW OF BURNER ASSEMBLY ZA C0 3D II rad WATER PRODUCTS COMPANY GENERAL SAFETY INFORMATION EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a qualified technician if the water heater Has been exposed to fire or damage Displays evidence of sooting Produces steam or unusually hot water If the water heater has been subject to flooding it must be replaced CHEMICAL VAPOR CORROSION A warnine CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPORS SUCH CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION Spray can propellants cleaning solvents refrigerator and air conditioning refrigerants swimming pool chemicals calcium and sodium chloride water softener salt wax
17. L VENTING BLOWER ASSEMBLY 4 Nm CONDENSATE TEE SUPPLIED FORM TRAP IN PLASTIC TUBE AND RUN TO DRAIN GRADE ALL PIPE PROTRUDING THROUGH THE ROOF SHOULD BE PROPERLY SUPPORTED FIGURE 9 IMPORTANT The vent system must terminate so that proper clearances are maintained as cited in local codes or the latest edition of the National Fuel Gas Code ANSI Z223 1 and as listed below 1 Vent Termination must extend a minimum of 12 inches above roof or 12 inches above the anticipated snow level to prevent blockage of the vent termination The venting system shall terminate at least four 4 feet from or one 1 foot above any gable dormer or other roof structure with building interior access i e vent window etc The venting system shall terminate three 3 feet above any forced air inlet located within ten feet VENT PIPE PREPARATION INITIAL PREPARATION A Make sure the solvent cement you are planning to use is designed for the specific application you are attempting B Know the physical and chemical characteristics and limitations of the PVC and CPVC piping materials that you are about to use C Know the reputation of your manufacturer and their products D Know your own qualifications or those of your contractor The solvent welding technique of joining PVC and CPVC pipe is a specialized skill just as any other pipe fitting technique E Closely supervise the installation and inspect
18. N BLOWER SHOULD BE ON AND PREPURGED posee p WITH IGNITER CABLE CONNECTED MEASURE VOLTAGE AT HSI ELEMENT OUTPUT SEE INSET B 120V NOMINAL CHECK DAMAGED OR BROKEN HSI ELEMENT A WARNING IGNITER WARMS UP AND GLOWS RED Line Voltage Hazard Can cause property damage NO severe injury or death REPLACE SmartValve CONTROL Only a trained experienced service technician should perform this trouble shooting Be certain to avoid contact with pressure switch and or electrical connections ves JAN REPLACEHSI CHECK STHEAPPLIANCE EARTH GROUNDED 120V BETWEEN HOT AND CHASSIS GROUND MAIN VALVE OPENS AND MAIN NO IS GAS SUPPLY OFF OR TOO LOW BURNER LIGHTS PRESSURE TO OPERATE THE CONTROL DOES BURNER FLAME MAKE GOOD CONTACT WITH THE FLAME ROD IS FLAME SENSE ROD CONTAMINATED OR IN AN INCORRECT LOCATION IS THERE APPROXIMATELY 100 VAV BETWEEN FLAME ROD AND BURNER PAN WITH 120VAC INPUT TO CONTROL IF ALL OF THE ABOVE ARE GOOD REPLACE IGNITER AND FLAME ROD ASSEMBLY CYCLE THERMOSTAT OFF AND BACK ON SYSTEM IS OKAY WHEN MEASURING VOLTAGE AT CONNECTIONS USE CARE TO ASSURE TERMINALS ARE MAIN BURNER LIGHTS REPLACE SmartValve CONTROL NOT DAMAGED 19 LIMITED RESIDENTIAL GAS WARRANTY THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONLY If the glass lined tank in this water heater shall prove upon examination by A O Smith Corporation the warrantor to have leaked duri
19. N OFF switch defective Replace switch Control harness defective Replace control harness Blower motor defective 2 Blower running burner not on Replace blower and motor Replace switch A Fan not running fast enough to close air switch contacts Check for low voltage less than 102 vac have service checked and repaired If voltage is above 102 vac make sure there is not more than 30 Equivalent feet of 3 inch pipe or 60 equivalent feet of 4 inch pipe installed or vent terminal blockage If at least 102 vac less than 30 equivalent feet of 3 inch pipe or 60 equivalent feet of 4 inch pipe and not terminal blockage replace blower Air pressure switch defective Replace switch Gas valve defective Replace gas valve Control harness defective Replace harness Igniter defective Replace igniter Unit has completed three trials to light and failed Reset cycle by turning switch off and then back on If unit does not light in three trials call an authorized A O Smith Service representative Discharge air limit tripped 3 Thermostat problems Verify dilution air openings are free of obstructions Make sure there is no more than 30 equivalent feet of 3 inch pipe or 60 equivalent feet of 4 inch pipe Check for low voltage less than 102 vac have service checked and repaired Make sure vent terminal is not blocked A Thermostat set too low Tu
20. ND USING THIS APPLIANCE performed by a qualified installer service agency or the gas supplier 3N4 SLM IER FEN WATER PRODUCTS COMPANY A DIVISION OF A O SMITH CORPORATION McBee South Carolina U S A www hotwater com supplier call the fire department SmartValve is a Registered Trademark of Honeywell Inc KEEP THIS MANUAL IN THE POCKET ON THE HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED PRINTED IN U S A 2585 400 PART NO 194219 000 GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS AND DELIMING PRODUCTS Replacement parts and recommended delimer may be ordered through authorized servicers or distributors Refer to the Yellow Pages for your A O Smith plumber or contact the A O Smith Water Products Company 5621 W 115th Street Alsip IL 60803 1 800 433 2545 When ordering parts provide complete model and serial numbers see rating plate quantity and name of part desired as listed in fig 1 Standard hardware items may be purchased locally ProductPreservers S 2 Il 4 AL gt Ie A VACUUM RELIEF INSTALL PER LOCAL CODES EP CONDENSATE TEE 0 y SUPPLIED c BB Da o Y p EN M we m CAUTION HARNESS HAS 120VAC IN OPERATION W FPSE 75 with Hot Surface Ignition amp SmartValve FIGURE 1 A VENT PIPE Q EMBLEM AND RATING B ANODE PLATE C HOT WATER OUTLET R
21. RE AND PRESSURE RELIEF VALVE GAS CONNECTIONS The minimum gas supply pressure for input adjustment is 5 0 W C for natural gas 11 0 W C for propane THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER THAN 14 WATER COLUMN SUPPLY PRESSURE EXPOSURE TO HIGHER GAS SUPPLY PRESSURE MAY CAUSE DAMAGE TO THE CONTROL WHICH COULD RESULT IN FIRE OR EXPLOSION If overpressure has occurred such as through improper testing of gas lines or emergency malfunction of the supply system the control must be checked for safe operation Make sure that the outside vents on the supply regulators and the safety vent valves are protected against blockage These are parts of the gas supply system not the heater Vent blockage may occur during ice storms IT IS IMPORTANT TO GUARD AGAINST CONTROL FOULING FROM CONTAMINANTS IN THE GAS WAYS SUCH FOULING MAY CAUSE IMPROPER OPERATION FIRE OR EXPLOSION Axwarnine VENT HOOD S MAY BE EXTREMELY HOT DURING OPERATION 4 MINIMUM VENT TERMINAL inr Ew REGULATOR be GAS M AN R 7 Diui ABOVE PUBLIC iru FIGURE 3 All piping must comply with local codes and ordinances or with the National Fuel Gas Code ANSI Z223 1 NFPA 54 whichever applies REFER TO FIG 1 FOR CONNECTION DETAILS BEFORE ATTACHING THE GAS LINE BE SURE THAT ALL GAS PIPE IS CLEAN ON THE INSIDE TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS SUPPLY LINE A DIRT LEG SOMETIMES C
22. RY TO LIGHT THE PILOT BY HAND control knob Never use tools If the knob will not BEFORE OPERATING smell all around the push in or turn by hand don t try to repair it call a appliance area for gas Be sure to smell next to the qualified service technician Force or attempted floor because some gas is heavier than air and will repair may result in a fire or explosion settle on the floor Do not use this appliance if any part has been WHAT TO DO IF YOU SMELL GAS under water The heater must be replaced Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions OPERATING INSTRUCTIONS 4 This appliance is equipped with a device which automatically lights the burner DO NOT TRY TO LIGHT THE BURNER BY HAND Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step Set thermostat to desired setting Turn on all electrical power to the appliance If the appliance will not operate follow the instructions TO TURN OFF GAS TO APPLIANCE and call your technician or gas supplier WATER TEMPERATURE ADJUSTMENT Turn temperature knob by hand to the desired temperature Hot is approximately 120 F 1 STOP Read the safety information above on this label CAUTION
23. STEP B C Test dry fit of the joint Tapered fitting sockets are designed so that an interference fit should occur when the pipe is inserted about 1 3 to 2 3 of the way into the socket Occasionally when pipe fitting dimensions are at the tolerance extremes it will be possible to fully insert dry pipe to the bottom of the fitting socket When this happens a sufficient quantity of cement must be applied to the joint to fill the gap between the pipe and fitting The gap must be filled to obtain a strong leak free joint D Inspection cleaning priming Visually inspect the inside of the pipe and fitting sockets and remove all dirt grease or moisture with a clean dry rag If wiping fails to clean the surfaces a chemical cleaner must be used Check for possible damage such as splits or cracks and replace if necessary Depth of entry mark Marking the depth of entry is a way to check if the pipe has reached the bottom of the fitting socket in step F Measure the fitting depth and mark this distance on the pipe O D You may want to add several inches to the distance and make a second mark as the primer and cement will most likely destroy your first one Apply primer to the surface of the pipe and fitting socket with a natural bristle brush see chart This process softens and prepares the PVC or CPVC for the solvent cementing step Move quickly and without hesitation to the cementing procedure while the surfaces are still wet with prime
24. VICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER IF ANY OF THE ORIGINAL WIRES SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH APPLIANCE WIRE MATERIAL WITH MINIMUM TEMPERATURE RATING OF 105 C AND A MINIMUM SIZE OF NO 18 AWG POWER VENT WIRING SCHEMATIC FIGURE 7 9 and glued into the end of the elbow that will mount on the discharge adapter see fig 6 An 1 8 inch bead of high temperature silicone should be applied to the circumference of the discharge adapter just before installing the first section of pipe or elbow INSTALLATION OF VENT SYSTEM SIDEWALL With the route of the venting system and selection of materials completed as discussed in section of this manual titled PLANNING THE VENT SYSTEM the through the wall vent terminal in place and the first section of piping up to first elbow installed at the blower it is time to complete the installation of the venting system for the sidewall installation MAXIMUM 30 FEET OF 3 PIPE FOR HORIZONTAL VENTING OR 60 FEET OF 4 PIPE ES VENT TERMINAL CONDENSATE TEE SUPPLIED BLOWER fal ASSEMBLY Pe FORM TRAP IN PLASTIC TUBE AND RUN TO DRAIN FIGURE8 Before completing the installation of the venting system be sure to read the sections of this manual discussing the proper method of cutting and cementing PVC pipe and fittings VENT PIPE PREPARATION It is recommended that the completion of the v
25. aled hot or cold supply connections relief valve drain valve or thermostat threads Provide drip TEE to catch condensation refer to pages 8 and 10 Turn off heater amp water repair unit Leakage from other appliances or water lines Inspect other appliances near water heater Condensation of flue products Thermal expansion in closed water system Refer to CONDENSATION Install thermal expansion tank DO NOT plug T amp P valve Improperly seated valve High sulfate or mineral content in water supply or iron or sulfate reducing bacteria in water supply 17 Check relief valve for proper operation DO NOT plug T amp P valve Drain and flush heater thoroughly chlorinate refill and flush again then chlorinate water supply LED STATUS BRITE DM 1 FLASH 2 FLASHES 3 FLASHES 4 FLASHES 5 FLASHES 6 FLASHES TROUBLESHOOTING WITH THE LED INDICATES No power to system control Normal Operation This indication shows whenever the system is powered unless some abnormal event has occurred Setpoint error internal failure detected Airflow proving switch remains open longer than 30 seconds after a call for heat begins Combustion air blower is not energized until airflow proving switch opens Airflow proving switch remains open longer than 30 seconds after combustion air blower energized System goes into 5 minute delay period with combustion air blower off At th
26. aler or the A O Smith authorized service agent in your area and explain to them why you are not satisfied This will usually correct the problem If after working with your dealer or service agent the problem has not been resolved to your satisfaction please let us know by either writing to us at A O Smith Water Products Company Service Department 600 East John Carpenter Freeway Rochelle Park Suite 200 Irving TX 75038 or going to our website at www hotwater com Please click on Mail then click on Service and leave us a message Please be sure to provide the following information when writing or e mailing Model Number Serial Number Date of Original Purchase Date Problem Originated Explanation of Problem Also please be sure to include a daytime telephone number TROUBLE SHOOTING Water heates may exhibit problems that are unrelated to a malfunction of the water heater itself The following information and tables may serve to answer your question about a problem that you are having without having to call a service agent For your safety water heater service should be performed only by a qualified service technician Read the GENERAL SAFETY INFORMATION section first WATERHEATING CYCLE GAS AND ELECTRIC POWER ARE ON OFF ON SWITCH IS ON 1 SMARTVALVE 1 CALLS FOR HEAT SEE FIGURES 1 amp 7 A THERMOSTAT SENSES NEED FOR HEATING WATER B CONTACTS CLOSE IN THERMOSTAT POWER 115 VAC FLOWS TO
27. are used each opening shall have a free area of not less than one square inch per 2000 Btuh of the total input of all appliances in the enclosure A DANGER Water heater has a main burner and pilot flame The pilotflame A vapors from flammable liquids may explode and catch fire causing death orsevere burns 1 is on all the time and 2 will ignite flammable Do notuse or store flammable vapors products such as gasoline solvents or adhesives in the same room or area near the water heater 1 cannot be seen 2 are heavier than air Keep flammable products 3 go along way on the floor and can be carried from other rooms to the pilot flame by air currents Vapors 1 far away from heater 4 2 inapproved containers 3 tightly closed and 4 out of children s reach flames are at least 18 above Do not install water heater the floor This will reduce where flammable products but not eliminate the risk of will be stored or used unless vapors being ignited by the the main burner and pilot main burner or pilot flame Installation WATER CONNECTIONS Refer to figure 1 for typical installation A suitable pipe thread sealant must be used to prevent leakage WATER POTABLE HEATING AND SPACE HEATING 1 All piping components connected to this unit for space heating applications shall be suitable for use with potable water 2 Toxic chemicals such as those used for boiler treatment shall NEVER be intro
28. cement integrity For more specific information you should contact your solvent cement manufacturer OPERATION warna DO NOT ATTEMPT TO OPERATE WATER HEATER WITH COLD WATER INLET VALVE CLOSED NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE HEATER TO OPERATE THE HEATER 1 Close the heater drain valve Figure 1 T by turning handle clockwise 2 Open a nearby hot water faucet to permit the air in the system to escape 3 Fully open the cold water inlet pipe valve Figure 1 M allowing the heater and piping to be filled 4 Close the hot water faucet as water starts to flow 5 The heater is ready to be operated A CAUTION THE ON OFF SWITCH ON THE CONTROL BOX SHOULD NOT BE TURNED TO THE OFF POSITION UNLESS THE UNIT IS BEING SERVICED TEMPERATURE REGULATION A DANGER FOR YOUR SAFETY READ BEFORE OPERATING WARNING if you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life FLAMMABLE BEFORE OPERATING ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES A This appliance does not have a pilot Itis equipped If you cannot reach your gas supplier call the fire with an ignition device which automatically lights department the burner C Use only your hand to push in or turn the gas DO NOT T
29. ded Flame sense rod contaminated or in incorrect location HSI element located incorrect position HSI element or flame sense rod wiring in good condition and properly connected Less than 100 Vac between flame rod and burner pan with 120 Vac input to control Cycle external power or remove request for heat for 2 seconds and reapply SV9560 SV9570 SMARTVALVE WATER HEATER CONTROL TROUBLESHOOTING GUIDE NOTE BEFORE TROUBLESHOOTING BECOME FAMILIAR WITH THE STARTUP AND CHECKOUT PROCEDURE TURN OFF GAS SUPPLY ASSURE APPLIANCE SWITCH IS CHECK INSET A IN ON POSITION LINE VOLTAGE POWER 120 VOLT DISCONNECT SYSTEM CONTROL WIRING INDUCER 120 VOLT HARNESS WARNING NEUTRAL HOT Line Voltage Hazard INDUCER Can cause property damage Hn HOT CHECK FOR PROPER VOLTAGE AT NO Sees ey OF trem AIR Only a trained experienced service PROVING CONTROL HARNESS SEE INSET A Pa D technician should perform this trouble SWITCH VOLTAGE SHOULD BE 120V BETWEEN 120V COMMON AND shooting Be certain to avoid contact AIR PROVING HOT with pressure switch and or electrical SWITCH HOT 120V HOT i connections YES CHECK FOR DAMAGED OR MISSING TERMINALS IN CONNECTOR CHECK IS AIR PROOFING SWITCH STUCK INSET B OR CLOSED IS THE FLUE BLOCKED IS THE WIRING CONNECTED PROPERLY TO THE SWITCH AND COMBUSTION BLOWER TURN ON GAS SUPPLY PLUG HARNESS INTO SmartValve CONTROL INITIATE A REQUEST FOR HEAT CONBUSTIO
30. duced into this system 3 This unit may NEVER be connected to any existing heating System or component s previously used with a non potable water heating appliance 4 When the system requires water for space heating at temperatures higher than required for domestic water purposes a tempering valve must be installed Please refer to Fig 2 for suggested piping arrangement SHUT OFF NON SCALD VALVE TEMPERING VALVE cA i I 7 5 CR COLD WATER INLET SUGGESTED PIPING ARRANGEMENT FOR TOP CONNECTIONS LE WATER SUPPLY TO HEAT EXCHANGER RETURN FROM HEAT EXCHANGER FIGURE 2 CLOSED WATER SYSTEM A closed system will exist if a back flow preventer check valve pressure reducing valve or other similar device is installed in the cold water line between the water heater and the street main or well Excessive pressure may develop due to the thermal expansion of heated water causing premature tank failure or intermittent relief valve operation This type of failure is not covered by the limited warranty An expansion tank may be necessary in the cold water supply to alleviate this situation see Fig 1 Contact the local plumbing authority If the temperature and pressure relief valve on the appliance discharges periodically this may be due to thermal expansion in a closed water supply system Contact the water supplier or local plumbing inspector on how to correct situation DO NOT PLUG THE TEMPERATU
31. e conduit fitting in enclosure installed The Power Vent operates on 120 Vac therefore a grounded outlet must be within reach of the 6 foot flexible E Splice field wiring into existing wiring using code power cord supplied with the vent see fig 1 The power cord authorized method wire nuts etc supplied may be used on unit only where local codes permit F Be certain that neutral and line connections are not If local codes do not permit use of flexible power supply cord reversed when making these connections A Remove two screws that secure side plate on control G Replace side panel and secure with two screws box and remove plate 5 The blower discharge adapter is made to accept only straight B Cut flexible power cord on inside of control box as close sections of 3 pipe To start off with an elbow a short section to inside wall as possible of the furnished pipe a minimum of 2 inches must be cut A CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION VERIFY PROPER OPERATION AFTER SERVICING Fae LE I a Ir MTIRRITUAE US A BE wn F IPTE P7 mmu L hw ar DAS VAL Ln PRETERE IWITTCHES LEGEND TaD DM BEnBLAGS 2 FL LIMON Li CE Bi 8 JV MORMEL DFERATIOM SECUIEHZE Bebi EE iri DN ant H24ZATED OF BORED HUPIERALS WABIS SAATE R Ae prp Pik SLADE BERE FII WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SER
32. e end of the 5 minute delay another ignition cycle will begin Thermal Cutoff open Combustion air blower is energized Internal hardware failure Flame signal sensed out of proper sequence Combustion air blower is energized System Lockout After 1 hour lockout reset delay control will reset and initiate a new ignition sequence if the call for heat is still present 18 CHECK REPAIR 1 Appliance On Off switch in the Off position 2 Line voltage input power at L1 and L2 connectors 3 System wiring harness in good condition and securely connected at both ends Not Applicable 1 Replace control 1 Airflow proving switch stuck closed 2 Airflow proving switch miswired or jumpered A WARNING Line Voltage Hazard Can cause property damage severe injury or death Turn off appliance before coming in contact with pressure switch and or electrical connections 1 Airflow proving switch operation tubing and wiring 2 Obstructions or restrictions in appliance air intake or exhaust flue system that prevent proper combustion air flow A WARNING Line Voltage Hazard Can cause property damage severe injury or death Turn off appliance before coming in contact with pressure switch and or electrical connections Replace Control Flame at main burner Replace control Gas supply off or at too low pressure to operate Damaged or broken HSI element Appliance not properly earth groun
33. e faceof the rating plate operated with the inner and outer combustion chamber doors in place maintained in accordance with the instructions printed in the manual included with the heater Any accident to the water heater or any part thereof including freezing fire floods or lightning any misuse abuse or alteration of it any operation of it in a modified form or any attempt to repair tank leaks or parts will void this warranty SERVICE AND LABOR RESPONSIBILITY UNDER THIS LIMITED WARRANTY THE WARRANTOR WILL PROVIDE ONLY A REPLACEMENT WATER HEATER OR PART THEREOF THE OWNER IS RESPONSIBLE FOR ALL OTHER COSTS Such costs may include but are not limited to a Labor charges for service removal or reinstallation of the water heater or part thereof b Shipping and delivery charges for forwarding the new water heater or replacement part from the nearest distributor and returning the claimed defective heater or part to such distributor except in the state of California where such charges are the manufacturer s responsibility c All cost necessary or incidental for handling and administrative charges and for any materials and or permits required for installation of the replacement heater or part LIMITATION ON IMPLIED WARRANTIES Implied warranties including any warranty of merchantability imposed on the sale of this heater under state law are limited to one year duration for the heater or any of its parts Some sta
34. e given above Adrwarnine In cold climates provide protection against freeze up THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE OF THE TANK OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE AREA ADJACENT TO THE HEATER OR TO LOWER FLOORS OF THE STRUCTURE When such locations cannot be avoided a suitable drain pan should be installed under the heater see fig 1 The pan must not restrict combustion air flow Such pans should have a minimum length and width of at least 2 inches greater than the diameter of the heater and should be piped to an adequate drain Drain pans suitable for these heaters are available from your dealer or A O Smith Water Products Company 5621 W 115th Street Alsip Illinois 60803 warna DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A CARPETED FLOOR A FIRE HAZARD MAY RESULT Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by at least 3 inches 76 2mm in any direction If the heater is installed in a carpeted alcove or closet the entire floor shall be covered by the panel AIR REQUIREMENTS In calculating the free area of a vent opening the blocking effect of screens louvers and grills should be considered Screens shall not be of a mesh smaller than 1 4 inch square If the free area is not known the latest edition of National Fuel Gas Code ANSI Z223 1 recommends using figures of 20 25 percent free area for wood louvers or 60 75 percent for
35. e installations where condensate will be formed in the horizontal runs of the vent system This condensate MUST NOT be allowed to drain back into the fan unit One method to catch the condensate before it can run back to the fan is to install a TEE mounted upside down and capped just past the first elbow Fig 9 of the vent pipe system This set up will require the installation of a small 1 4 3 8 inch plastic tube with the proper trap to drain the condensate to a floor drain A second method to prevent the condensate from draining back to the fan unit would be to install the vent system with a slight 1 8 inch per five foot of pipe maximum downward slope max of 5 8 inch 4 Maximum Pipe Feet 3 Maximum Pipe Feet Number of 90 Elbows ONE 1 25 TWO 2 20 THREE 3 15 FOUR 4 10 FIVE 5 TABLE 1 INSTALLATION OF SIDEWALL VENT SYSTEM Before beginning installation of piping system thoroughly read the section of this manual VENT PIPE PREPARATION If you are installing your system so that it vents through roof please refer to following section titled INSTALLATION OF VERTICAL VENT SYSTEM VENT TERMINAL INSTALLATION SIDEWALL 1 Install the vent terminal by using the cover plate as a template to mark the hole for the vent pipe to pass through the wall BEWARE OF CONCEALED WIRING AND PIPING INSIDE THE WALL 2 If the Vent Terminal is being installed on the outside of a fini
36. e with the vent terminal can be prepared for gluing before inserting through the wall Slide the pipe through the wall and insert into the coupling on the other side of the wall making sure that the vent terminal ends up pointed in the correct position See fig 5 MORTAR OR SILICONE METAL PLATE CAULK ie 3 PVC VENT 3 TERMINAL WITH MESH PROTECTIVE SCREENS INSIDE mec WATER HEATER 1 FOOT MIN n OUTSIDE OF 3 PVC COUPLING BUILDING WALL VENT TERMINATION FIGURE 5 PREPARATION OF BLOWER ASSEMBLY 1 Check to make sure that the wire harness is attached to the gas valve and blower control box 2 Make sure no material is still attached to the outside or inside of blower assembly T PLACE A 1 8 BEAD OF HIGH TEMPERATURE SEALCON II SILICONE ON INSIDE OF BLOWER DISCHARGE ADAPTER BEFORE INSTALLING VENT SYSTEM L MAXIMUM RECOMMENDED LENGTH IS FOUR 4 FEET BEFORE FIRST ELBOW L MUST INSTALL SHORT PIECE OF PIPE IN ELBOW TO MOUNT ON BLOWER DISCHARGE PLASTIC TUBING PRESSURE SWITCH FIGURE6 3 Make sure that plastic tubing is still attached to the pressure C If flexible cord and strain relief are removed then switch and fan housing Also make sure that wiring connector opening in box must be covered from motor to control box is securely attached D Remove plastic cap in top of control box and install 4 Do not plug in power cord until vent system is completely suitabl
37. enting system start at the blower assembly and run to the coupling on the inside wall of the vent terminal Figure 5 If condensate TEE is being installed to keep condensate from running back to the blower be sure to form trap in plastic drain tube and run the condensate to a drain See Figure 8 The vent system piping should be supported every 5 feet of vertical run and every 3 feet of horizontal run All piping and fittings must be joined by the proper procedures as described under VENT PIPE PREPARATION INSTALLATION OF VERTICAL VENT SYSTEM This unit is approved for venting through the roof with only the vent terminal that is included with the unit see Figure 9 A proper flashing or BOOT should be used to seal the pipe where it exits the roof The total vent system should not exceed the thirty 10 30 equivalent feet of 3 inch pipe or sixty 60 equivalent feet of 4 inch pipe as listed in Table 1 NOTE The equivalent feet of pipe listed above are exclusive of the TEE termination with installed screens Provide support for all pipe protruding through the roof All piping should be properly secured The vent system piping should be supported every 5 feet of vertical run and every 3 feet of horizontal run All piping and fittings must be joined by the proper procedures as described under VENT PIPE PREPARATION MIN 12 ABOVE ROOF OR MIN OF 12 ABOVE ANTICIPATED SNOW LEVEL UP TO MAX 30 EQUIVALENT T3 FEET FOR VERTICA
38. equire cleaning turn the control switch to OFF position and allow the burner to cool Remove the burner and clean with a soft brush Clean main burner orifice with a suitable soft material HIGH TEMPERATURE LIMIT SWITCH The thermostat has a built in limit switch which will shut off gas to burner in case of excessive water temperatures The pilot cannot be relit until the water temperature is reduced and ECO reset It is important that a serviceman be called to determine the reason for limit operation and thus avoid repeated thermostat resetting Lower the temperature adjustment dial setting on control VENTING SYSTEM HAVE VENTING SYSTEM CHECKED EVERY SIX MONTHS FOR OBSTRUCTIONS AND OR DETERIORATION IN VENT PIPING A Insofar as is practical close all doors windows and air inlets to the building Turn on all exhaust fans range hood bathroom exhaust etc so they will operate at their maximum speed Close fireplace dampers B Turn water temperature adjusting knob to full counterclockwise and open water faucet if necessary to keep burner in operation C CHECKING THE DRAFT Operate the water heater for several minutes and check to see if it is venting properly by passing a lit match or paper near the opening of the Air Supply Box If the draft is proper the match flame will be drawn into the Air Supply Box fig 11 If not the combustion products will tend to extinguish the flame If an improper draft exists do not
39. es and process chemicals are typical compounds which are potentially corrosive Do not store products of this sort near the heater Also air which is brought in contact with the heater should not contain any of these chemicals If necessary uncontaminated air should be obtained from remote or outside sources The limited warranty is voided when failure of water heater is due to a corrosive atmosphere Reference is made to the limited warranty for complete terms and conditions IMPROPER COMBUSTION Awwarnine ATTIC AND OR EXHAUST FANS OPERATING ON THE PREMISES WITH A WATER HEATER CAN RESULT IN CARBON MONOXIDE POISONING AND DEATH OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE DRAFT IN THE AREA OF THE WATER HEATER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE VENT PIPE The venting of the water heater should be inspected by a qualified service technician at the time of installation and periodically thereafter to ensure a down draft condition does not exist DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION LIQUID PETROLEUM MODELS Awwarnine Water heaters for propane or liquefied petroleum gas LPG are different from natural gas models A natural gas heater will not function safely on LP gas and no attempt should be made to convert a heater from natural gas to LP gas LP gas must be used with great caution It is hi
40. ets to limit hot water temperatures Contact a licensed plumber or the local plumbing authority SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUTOFF TURN OFF THE MAIN MANUAL GAS SHUTOFF VALVE TO THE APPLIANCE SEE FIGURE 1 G MAINTENANCE A CAUTION DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT FOR YOUR SAFETY WATER HEATER SERVICE SHOULD BE PERFORMED ONLY BY A QUALIFIED SERVICE TECHNICIAN READ THE GENERAL SAFETY INFORMATION SECTION FIRST USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME THE GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY A QUALIFIED SERVICE TECHNICIAN MAIN BURNER Check main burner every 12 months for proper flame characteristics This is done by removing door s on heater fig 1 The main burner should provide complete combustion of gas ignite rapidly give reasonable quiet operation cause no excessive flame lifting from burner ports Make sure that the flow of combustion and ventilation air is not blocked If proper flame characteristics are not evident check for accumulation of lint or other foreign material that restricts or blocks the air openings in the heater or burner Also check AIR REQUIREMENTS A WARNING SOOT BUILD UP INDICATES A PROBLEM THAT REQUIRES CORRECTION BEFORE FURTHER USE Consult with a qualified service technician Should the main burner or burner air openings r
41. ghly explosive and heavier than air It collects first in the low areas making its odor difficult to detect at nose level If LP gas is present or even suspected do not attempt to find the cause yourself Go to a neighbor s house leaving your doors open to ventilate the house then call your gas supplier or service agent Keep area clear until a service call has been made At times you may not be able to smell an LP gas leak One cause is odor fade which is a loss of the chemical odorant that gives LP gas its distinctive smell Another cause can be your physical condition such as having a cold or a diminishing sense of smell with age For these reasons the use of a propane gas detector is recommended IF YOU EXPERIENCE AN OUT OF GAS SITUATION DO NOT TRY TO RELIGHT APPLIANCES YOURSELF Ask your LP delivery person to relight pilots for you Only trained LP professionals should conduct the required safety checks in accordance with industry standards EXTENDED NON USE PERIODS Aawarnine HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER SYSTEM SERVED BY THIS HEATER THAT HAS NOT BEEN USED FOR A LONG PERIOD OF TIME GENERALLY TWO WEEKS OR MORE HYDROGEN GAS IS EXTREMELY FLAMMABLE To reduce the risk of injury under these conditions it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system If hydrogen is present there will probably be an
42. hat lower water temperatures be used to avoid the risk of scalding It is further recommended in all cases that the water temperature dial be set for the lowest temperature which satisfies your hot water needs This will also provide the most energy efficient operation of the water heater The water temperature adjusting dial was factory set at the lowest temperature Turning the dial counterclockwise Y decreases temperature and clockwise increases temperature WATER TEMPERATURE i ADJUSTING DIAL i Time to Produce 2nd amp 3rd Degree Burns on Adult Skin About 1 2 second Temperature Setting VERY HOT 160 F C 150 F About 1 1 2 seconds B 140 F Less than 5 seconds A 130 F About 30 seconds HOT 120 F More than 5 minutes LOW approx 80 F FIGURE 10 SETTING THE WATER HEATER TEMPERATURE AT 120 F WILL REDUCE THE RISK OF SCALDS Some states require settings at specific lower temperatures Figure 10 shows the approximate water temperatures produced at various thermostat dial settings Short repeated heating cycles caused by small hot water uses can cause temperatures at the 14 point of use to exceed the thermostat setting by up to 30 F If you experience this type of use you should consider using lower temperature settings to reduce scald hazards Valves for reducing the point of use temperature by mixing cold and hot water are available See figure 2 Also available are inexpensive devices that attach to fauc
43. inances and regulations 2 the printed instructions provided with it 3 good industry practices and 4 proper safety practices such as but not limited to a properly sized drain pan if installed in an area where leakage from connections of the tank would result in damage to the area adjacent to the heater In addition a new temperature and pressure relief valve certified by the American Gas Association must have been properly installed and piped to the nearest drain This warranty shall apply only when the heater is owned by the original purchaser used at temperatures not exceeding the maximum calibrated setting of its thermostat not subjected to excessive water pressure fluctuations and not subject to an operating pressure greater than 150 P S I filled with potable water free to circulate at all times and with the tank free of damaging water sediment or scale deposits used in a non corrosive and non contaminated atmosphere used with factory approved anode s installed in its original installation location in the United States its territories or possessions and Canada sized in accordance with proper sizing techniques for residential water heaters bearing a rating plate which has not been altered defaced or removed except as required by the warrantor not used in a closed system without a properly sized and installed thermal expansion tank fired at the factory rated input using the fuel stated in th
44. lets these drip into the fire or run out on the floor This is common at the time of startup after installation during periods of time when incoming water is very cold or the heater may be undersized for the requirements Droplets from the bottom of the flue may be due to corrosive combustion products or improper vent Check with your dealer for more information CATHODIC PROTECTION ANODE The anode rod within the tank is designed to be slowly consumed cathodically minimizing corrosion in the glass lined tank A hydrogen sulfide rotten egg odor may result if water contains high sulfate and or minerals Chlorinating the water supply should minimize the problem See EXTENDED NON USE PERIODS NOTE Anode must remain installed except for inspection to avoid shortening tank life See LIMITED WARRANTY Replace as necessary SERVICE AND REPAIR The A O Smith water heater requires no special care other than the normal maintanence as noted above If you are having a problem with your water heater before calling for service please refer to the following TROUBLESHOOTING sections If service becomes necessary contact your dealer installer or an authorized service agent Do not attempt to repair the water heater yourself Any work performed by authorized personnel may void the warranty If you are having a problem with your A O Smith water heater and are not pleased with the service you received 16 First please contact your de
45. ng the warranty period in normal residential use due to natural corrosion from potable water therein the warrantor will furnish the ORIGINAL OWNER a replacement A O Smith water heater of equivalent size and current model or a replacement part for any component part which fails in normal use in accordance with the warranty terms and conditions specified below THE A O SMITH REPLACEMENT MODEL OR PART WILL BE WARRANTED FOR ONLY THE UNEXPIRED PORTION OF THE ORIGINAL WARRANTY The warranty period will be determined by the original installation date of the water heater PROOF OF PURCHASE AND PROOF OF INSTALLATION ARE NECESSARY TO VALIDATE THIS WARRANTY This warranty is not transferable and applies to models listed in Table 1 which are produced after December 31 1996 TABLE 1 WARRANTY PERIOD TANK 6 YEARS PARTS 2 YEARS When the water heater has been used for other than single family residential application 1 The tank warranty shall be reduced to 1 year 2 The parts warranty shall be reduced to one year for all models Returned parts which meet any of the following conditions are not covered by this warranty 1 improper installation or removal 2 damaged by other than normal wear 3 replaced for cosmetic purposes or 4 returned with defaced date codes CONDITIONS AND EXCEPTIONS This warranty shall apply only when the water heater is installed and operated in accordance with 1 all local fire codes and plumbing codes ord
46. out the total vent system to use a minimum of vent pipe and elbows Take into consideration that an elbow will be necessary to make the first vent pipe connection to the power venter outlet see Figure 6 2 This water heater is capable of venting the flue gases the equivalent of thirty 30 feet of 3 inch pipe or sixty 60 feet of 4 inch pipe as listed in Table 1 NOTE The equivalent feet of pipe listed above are exclusive of the Tee termination That is the first elbow and the termination Tee with installed screens are assumed to be in the system and the remainder of the system must not exceed the thirty 30 equivalent feet of 3 inch pipe or sixty 60 equivalent feet of 4 inch pipe 3 The blower discharge adapter is made to accept only straight sections of 3 pipe To start a minimum of 2 inches of 3 pipe must be glued into the blower discharge See figure 6 If using 3 inch vent pipe A minimum of 2 inches maximum of 4 feet of 3 pipe must be glued into the blower before the first 3 inch elbow After the first elbow add the additional venting required for the installation The total system cannot exceed 30 equivalent feet of venting where each elbow is equal to 5 feet of straight pipe If using 4 inch vent pipe Two inches of 3 pipe must be glued into the blower discharge A 4 x 3 reducer is added and then up to 4 feet of 4 inch pipe added before the first elbow An additional 4 x 3 reducer and 1 foot of 3 pipe
47. r E Application of solvent cement Apply the solvent cement evenly and quickly around the outside of the pipe at a width a little greater than the depth of the fitting socket Apply a light coat of cement evenly around the inside of the fitting socket Avoid puddling Apply a second coat of cement to the pipe end STEP E NOTE Cans of cement and primer should be closed at all times when not in use to prevent evaporation of chemicals and hardening of cement They are also very flammable and should be kept away from heat or flame STEP F F Joint assembly Working quickly insert the pipe into the fitting socket bottom and give the pipe or fitting a 1 4 turn to evenly distribute the cement Do not continue to rotate the pipe after it has hit the bottom of the fitting socket A good joint will have sufficient cement to make a bead all the way around the outside of the fitting hub The fitting will have a tendency to slide back while the cement is still wet so hold the joint together for about 15 seconds 12 G Cleanup and joint movement Remove all excess cement from around the pipe and fitting with a dry cotton rag This must be done while the cement is still soft The joint should not be disturbed immediately after the cementing procedure and sufficient time should be allowed for proper curing of the joint Exact drying time is difficult to predict because it depends on variables such as temperature humidity and
48. rn temperature control higher B Thermostat or ECO defective Replace thermostat C High limit control circuit open 4 Others Replace A Heater undersized Reduce hot water use B Low gas pressure Contact an authorized A O Smith service representative Incoming water is unusually cold Allow more time for heater to re heat C D Leaking hot water pipes or fixtures A Blower does not run when heater fired Have plumber check and repair leaks Take unit out of service immediately call an authorized A O Smith service representative B Not enough dilution air to mix with flue gases in Tee Proper air circulation must be provided for combustion and dilution of flue temp Refer to INSTALLATION section C Air in room too hot for mixing with flue gases Room air to be used for dilution with combustion products in flue should be less than 90 F D Wrong burner orifice A Dirt in burner ports Install correct orifice Turn off heater and gas clean burner head B Combustion air path restricted Clear area around heater and check under heater remove any debris under heater and in openings in bottom cover C Not enough room air for proper combustion A Water on the floor under heater Refer to installation manual Confined and Unconfined Space statements on page 4 and 5 for required openings See CONDENSATION B Water dripping from fan Improperly se
49. shed wall it may be easier to mark both the inside and outside wall Align the holes by drilling a hole through the center of the template from the inside through to the outside The template can now be positioned on the outside wall using the drilled hole as a centering point for the template 3 A MASONRY SIDE WALLS Chisel an opening approximately one half inch larger than the marked circle B WOODEN SIDE WALLS Drill a pilot hole approximately one quarter inch outside of the marked circle This pilot hole is used as a starting point for a saws all or sabre saw blade Cut around the marked circle staying approximately one quarter inch outside of the line This will allow the vent to easily slide through the opening The resulting gap will be covered up by the Vent Terminal cover plate Repeat this step on inside wall if necessary SEQUENCE OF INSTALLATIONS FIGURE 4 Cut a length of 3 PVC pipe about 3 5 inches longer than the wall thickness at the opening Glue the vent terminal TEE with screens to this section of pipe Slide the wall plate over the pipe to stop against TEE Place a bead of caulking not supplied around the gap between the pipe and cover plate Apply enough to fill some of the gap between the pipe and wall Place some of the caulking on the back of the plate to hold it against the wall after installation If the vent pipe is installed up to the wall with a coupling on the end against the wall opening the pip
50. tes do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you CLAIM PROCEDURE Any claim under this warranty should be initiated with the dealer who sold the heater or with any other dealer handling the warrantor s products If this is not practical the owner should contact A O Smith Water Products Company 5621 West 115th Street Alsip Illinois 60803 800 323 2636 Canadian customers should contact A O Smith Enterprises Ltd P O Box 310 768 Erie Street Stratford Ontario N5A 6T3 519 271 5800 The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed by the warrantor Dealer replacements are made subject to in warranty validation by warrantor PROOF OF PURCHASE AND PROOF OF INSTALLATION DATES ARE REQUIRED TO SUPPORT WARRANTY FOR CLAIM FROM ORIGINAL OWNER THIS FORM DOES NOT CONSTITUTE PROOF OF PURCHASE OR PROOF OF INSTALLATION DISCLAIMERS NO EXPRESSED WARRANTY HAS BEEN OR WILL BE MADE IN BEHALF OF THE WARRANTOR WITH RESPECT TO THE HEATER OR THE INSTALLATION OPERATION REPAIROR REPLACEMENT OF THE HEATER OR PARTS THE WARRANTOR SHALL NOT BE RESPONSIBLE FOR WATER DAMAGE LOSS OF USE OF THE UNIT INCONVENIENCE LOSS OR DAMAGE TO PERSONAL PROPERTY OR OTHER CONSEQUENTIAL DAMAGE THE WARRANTOR SHALL NOT BE LIABLE BY VIRTUE OF THIS WARRANTY OR OTHERWISE FOR DAMAGE TO ANY PERSONS OR PROPERTY
51. ting condition Lift the lever at the top of the valve several times until the valve seats properly and operates freely A WARNING THE WATER PASSING OUT OF THE VALVE DURING THIS CHECKING OPERATION MAY BE EXTREMELY HOT AVOID CONTACT AND DISCHARGE SAFELY TO PREVENT WATER DAMAGE DRAINING Periodically open the drain valve and allow the water to run until it flows clean This will help prevent sediment build up in the tank It is normal for lime and scale deposits to form within the tank and on the heat exchanger surfaces Such deposits will not be removed by periodic draining It is necessary to chemically delime the affected parts in water areas where such deposits are encountered Contact your dealer or plumber for deliming information If the heater is to be shut off and exposed to freezing temperatures it must be drained Water if left in the tank and allowed to freeze will damage the heater Turn off the gas and cold water inlet valve to the heater Open a nearby hot water faucet and the heater drain valve BE CAREFUL TO GRASP THE DRAIN VALVE HANDLE SO THAT THE HAND IS NOT EXPOSED TO HOT WATER IF DESIRED A HOSE MAY BE CONNECTED TO THE DRAIN VALVE TO CARRY THE WATER AWAY A WARNING The water CAN BE HOT The drain valve must be left open during the shutdown period To restart heater refer to the instructions under OPERATION CONDENSATION Water vapor can condense on the cooler surfaces of the tank forming drop
52. uran THF Small quantities of dimethyl formamide DMF may be included to act as a retarding agent to extend curing time Select the proper cement Schedule 40 cement should be used for Schedule 40 pipe Never use all purpose cements commercial glues and adhesives or ABS cement to join PVC or CPVC pipe and fittings SAFETY PRECAUTION PRIMERS AND CEMENTS ARE EXTREMELY FLAMMABLE AND MUST NOT BE STORED OR USED NEAR HEAT OR OPEN FLAME ALSO USE ONLY IN A WELL VENTILATED AREA 3 MAKING THE JOINT A Cutting Pipe must be squarely cut to allow for the proper interfacing of the pipe end and the fitting socket bottom This can be accomplished with a miter box saw or wheel type cutter Wheel type cutters are not generally recommended for larger diameters since they tend to flare the corner of the pipe end If this type of cutter is used the flare on the end must be completely removed 11 NOTE Power saws should be specifically designed to cut plastic pipe STEPA B Deburring Use a knife plastic pipe deburring tool or file to remove burrs from the end of small diameter pipe Be sure to remove all burrs from around the inside as well as the outside of the pipe A slight chamfer bevel of about 10 15 should be added to the end to permit easier insertion of the pipe into the end of the fitting Failure to chamfer the edge of the pipe may remove cement from the fitting socket causing the joint to leak 3 32 2 5MM
Download Pdf Manuals
Related Search