A.O. Smith Residential Gas Water Heaters Installation And Operating Manual Download Page 4

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GENERAL SAFETY

Summary of Contents for Residential Gas Water Heaters

Page 1: ...REQUIRED POWER VENTED GAS MODELS WITH HOT SURFACE IGNITION NOT FOR USE IN MANUFACTURED MOBILE HOMES For Your Safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER ALL TECHNICAL AND WARRANTY...

Page 2: ...ion 24 Gas Piping 24 Sediment Traps Dirt Leg 25 Filling The Water Heater 26 Venting 26 Termination Clearances Sidewall Power Vent 27 Blower Assembly Installation 28 Installation Of Vent System 28 Plan...

Page 3: ...requires businesses to warn of potential exposure to such substances This product contains a chemical known to the State of California to cause cancer birth defects or other reproductive harm This app...

Page 4: ...4 www hotwater com GENERAL SAFETY...

Page 5: ...rs 1 cannot be seen 2 are heavier than air 3 go a long way on the floor and 4 can be carried from other rooms to the the electodes by air currents Flammable Vapors FLAMMBLE DANGER Breathing carbon mon...

Page 6: ...H SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE This manual contains instructions for installation operation and maintenance of the gas fired water heater It also contains warnings throughout the manua...

Page 7: ...terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTR...

Page 8: ...SSACHUSETTS INSTALLATION REQUIREMENTS 1 CONNECT ELECTRONICALLY CONTROLLED TIMER TO AN ALL BRONZE PUMP PUMP MUST ACTIVATE EVERY 6 HOURS FOR 60 SECONDS TURN PUMP TIMER OFF BEFORE CLOSING PIPING LOOP SHU...

Page 9: ...re 6 24 Junction Box Cover see Figure 6 25 Air Tubing see Figure 6 26 Rubber Coupling see also Figure 6 27 Gear Clamp see also Figure 6 28 Flue Collector 29 Hot Water Outlet Nipple 30 Anode under cap...

Page 10: ...de Taps below Caution harness has 120 VAC In operation See Planning The Vent System Condensate and Blower Assembly Installation for more information REPLACEMENT PARTS AND DELIMING PRODUCTS Replacement...

Page 11: ...DRAIN MASSACHUSSETTS INSTALL A VACUUM RELIEF IN COLD WATER LINE PER SECTION 19 MGL 142 Figure 8 This appliance has been design certified as complying with American National Standard CSA Standard for w...

Page 12: ...be installed at water heater see Figures 8 10 or at hot water taps to further reduce system water temperature Mixing valves are available at plumbing supply stores Consult a Qualified Installer or Ser...

Page 13: ...wiring diagram for the correct electrical connections After making all electrical connections completely fill the tank with water and check all connections for leaks Open the nearest hot water faucet...

Page 14: ...flame and causing a flashback In order to detect such flammable vapors before they enter the combustion chamber this water heater is equipped with a flammable vapor sensor FVS It is a chemical absorpt...

Page 15: ...st be piped to an adequate drain The pan must have a maximum depth of 1 75 4 5cm Water heater life depends upon water quality water pressure and the environment in which the water heater is installed...

Page 16: ...ce by at least 3 76mm in every direction or if the appliance is installed in an alcove or closet the entire floor must be covered by the panel Failure to heed this warning may result in a fire hazard...

Page 17: ...oxide Gas WARNING AIR REQUIREMENTS For safe operation an adequate supply of fresh uncontaminated air for combustion dilution and ventilation must be provided Note Contaminated or dusty air may cause b...

Page 18: ...and air conditioner refrigerants swimming pool chemicals calcium and sodium chloride water softener salt waxes bleach and process chemicals are typical compounds which are potentially corrosive A ALL...

Page 19: ...s and grilles will have 60 75 percent free area Louvers and grilles shall be fixed in the open position or interlocked with the equipment so that they are opened automatically during equipment operati...

Page 20: ...installation of valves Before changing the factory setting on thermostat read Operating The Temperature Control System section in this manual This water heater should not be connected to any heating...

Page 21: ...to reduce heat loss If the local jurisdiction requires a back flow preventer in the cold water line an expansion tank of adequate size must be installed Combo Heating Systems require higher water tem...

Page 22: ...installed on all closed systems to control the harmful effects of thermal expansion Contact a plumbing service agency or your retail supplier regarding the installation of a thermal expansion tank No...

Page 23: ...circumstances Excessive length over 30 feet 9 14m or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve No valve or other obstruction is to be placed bet...

Page 24: ...heater Locate the slit running the length of a section of pipe insulation Spread the slit open and slip the insulation over the cold water inlet pipe Apply gentle pressure along the length of the ins...

Page 25: ...rinse off soapy solution and wipe dry Use joint compound or tape compatible with propane Leak test before operating heater Disconnect gas piping and shut off valve before pressure testing system Fire...

Page 26: ...the tank and the water piping Ensure any shut off valves between the heater and the faucets are the open position 4 Open the cold water supply valve to the water heater Notes The cold water supply val...

Page 27: ...4 ft 1 2m below or to side of opening 1 foot 30cm above opening D Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2 ft 61cm from the center line of...

Page 28: ...7 The blower discharge boot is made to accept only straight sections of 2 or 3 pipe To start off with an elbow a short section of the straight pipe must be cut and glued into the end of the elbow that...

Page 29: ...polypropylene to PVC end connection is required and is available through your supplier Optional wall plates that fit the polypropylene venting are also available through your supplier Carefully inspec...

Page 30: ...ent material Only use approved material All venting material and components must be joined with the approved primer cleaner and solvent cement Do not common vent this heater with any other appliance D...

Page 31: ...e are supplied with a 3 3 rubber coupling to attach the venting to the blower and a 3 45 vent termination elbow Supplied with this heater are several vent termination screens see Figures 32 33 Install...

Page 32: ...ep Long Radius Notes 1 Use long radius elbows where possible Minimum distance between 90 elbows should be 6 150mm wherever possible 2 Venting systems may use a maximum of five 5 90 elbows 3 Use proper...

Page 33: ...OF CONCEALED WIRING AND PIPING INSIDE THE WALL 9 Insert the vent piping through this hole and secure into position Connect the vent pipe to the end termination elbow as shown in Figures 35 37 10 Dry...

Page 34: ...o not use glue or sealant in the rubber coupling Check that there is no stress on the connection or the vent piping that may be caused by twisting or bending 6 Tighten the upper clamp so that the vent...

Page 35: ...tent consulting agency if you have any questions about the application or installation of PVC and CPVC pipe Take the time and effort to do a professional job Shortcuts will only cause you problems and...

Page 36: ...st 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 gener...

Page 37: ...the inside of the fitting socket Avoid puddling Apply a second coat of cement to the pipe end Cans of cement and primer should be closed at all times when not in use to prevent evaporation of chemica...

Page 38: ...he water piping system Located as close to gas piping and vent pipe system as possible Located indoors and in a vertical position Protected from freezing temperatures Proper clearances from combustibl...

Page 39: ...n 5 Do not attempt to light manually 6 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 the next ste...

Page 40: ...ese groups or if there is a local code or state law requiring certain temperature water at the hot water tap then you must take special precautions In addition to using the lowest possible temperature...

Page 41: ...30 54 More than 30 seconds HOT 120 49 More than 5 minutes LOW 110 43 Normal shower temp VAC 70 21 N A Table 4 Note The temperatures indicated are approximates The actual temperature of the heated wate...

Page 42: ...a plumbing service agency or your retail supplier regarding the installation of a thermal expansion tank Closed water systems See Closed Water Systems section elswhere in this manual Smoke odor It is...

Page 43: ...ny electrical appliances which are connected to the hot water system are used such as a dishwasher or washing machine If hydrogen gas is present there will probably be an unusual sound similar to air...

Page 44: ...ion something is wrong Call the local gas utility to correct the problem and clean or replace the flue and venting before resuming operation of the water heater BLOWER MAINTENANCE Inspect the top of t...

Page 45: ...PLING BLOWER FLUE COLECTOR HOOD 11 32 NUTS MOUNTING PLATE GEAR CLAMP VENT PIPE MOTOR Figure 50 7 8 9 10 11 12 13 14 BURNER OPERATION AND INSPECTION Flood damage to a water heater may not be readily vi...

Page 46: ...all water odor problems Artificially softened water can be exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions The use of a excessively soft water may decr...

Page 47: ...e discharge BURN HOT HOT DANGER It is recommended that the temperature pressure relief valve be checked to ensure it is in operating condition at least once a year When checking the temperature pressu...

Page 48: ...If the water heater is going to be shut down and drained for an extended period the drain valve should be left open with hose connected allowing water to terminate to an adequate drain Close the wate...

Page 49: ...all amounts of water from temperature pressure relief valve may be due to thermal expansion or high water pressure in your area E The temperature pressure relief valve may be leaking at the tank fitti...

Page 50: ...o Heating System Return Inlet Optional 19 Air Inlet Snorkel 20 Combo Heating System Supply Outlet Optional 21 Blower with Power Cord see also Figure 62 22 Air Switch inside box see Figure 62 23 Juncti...

Page 51: ...38 39 37 35 40 41 Natural gas and Propane main burner with igniter assembly for 60k to 75k Btu hr models Flare Nut Figure 60 17 Figure 61 25 23 24 22 5 26 27 21 Figure 62 Notes Natural gas models have...

Page 52: ...s too high Defective gas control valve thermostat 1 2 Turn temperature knob to lower setting Replace the gas control valve thermostat 1 2 SLOW HOT WATER RECOVERY Insufficient air flue blockage Low gas...

Page 53: ...with correct orifice see rating plate Clean locate source and correct Replace gas control valve thermostat Provide fresh air ventilation 1 2 3 4 5 6 7 UNABLE TO LIGHT THE BURNER Air in gas line Press...

Page 54: ...stion and dilution of flue temp Increase ventilation to lower room temperature Install correct orifice 1 2 3 4 RESETTING THE HEATER CONTROL Soft lockouts as diagnosed by the system error codes require...

Page 55: ...o the Trouble Shooting Guidelines to diagnose the problem before attempting corrective action See also Flammable Vapor Sensor and TCO Resettable Lockout LED Flash Sequence Control Status Short flash o...

Page 56: ...56 www hotwater com This page intentionally left blank May be used for notes or to record other installation information...

Page 57: ...www hotwater com 57 This page intentionally left blank May be used for notes or to record other installation information...

Page 58: ...illed 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 ap...

Page 59: ...500 Tennessee Waltz Parkway Ashland City TN 37015 phone 1 800 821 2017 The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or dist...

Page 60: ...500 Tennessee Waltz Parkway Ashland City TN 37015 Technical Support 800 527 1953 Parts 800 433 2545 Fax 800 644 9306 www hotwater com Copyright 2012 A O Smith Corporation All rights reserved...

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A.O. Smith Residential Gas Water Heaters, Installation And Operating Manual

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