A.O. Smith 197835-001 Instruction Manual

Power vent/power direct vent gas models with hot surface ignitio
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Ashland City, TN 37015
www.hotwater.com
all technIcal and warrantY questIons: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, CALL THE TECHNICAL SUPPORT PHONE NUMBER SHOWN ON THE WATER HEATER LABELING.
PRINTED IN THE U.S.A 1208
resIdentIal Gas water heaters
Keep thIs Manual In the pocKet on heater for future reference
whenever MaIntenance adjustMent or servIce Is requIred.

Instruction Manual

power vent/power dIrect vent Gas Models

for Your safety

AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
1
wIth hot surface IGnItIon
197835-001

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Summary of Contents for A.O. Smith 197835-001

  • Page 1: Instruction Manual

    MaIntenance adjustMent or servIce Is requIred. PRINTED IN THE U.S.A 1208 Instruction Manual power vent/power dIrect vent Gas Models wIth hot surface IGnItIon • for Your safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER. • 197835-001...
  • Page 2: Safe Installation, Use And Service

    safe InstallatIon, use and servIce Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard.
  • Page 3: General Safety

    General safetY...
  • Page 4 General safetY...
  • Page 5: Table Of Contents

    SAFE INSTALLATION, USE AND SERVICE...2 GENERAL SAFETY...3 TABLE OF CONTENTS ...5 INTRODUCTION ...5 Preparing for the Installation ...5 Get to Know Your Water Heater ...6 INSTALLATION CONSIDERATIONS ...7 Rough In Dimensions...7 Commonwealth of Massachusetts ...8 Water Piping - Mixing Valve Usage ...9 Facts to Consider About Location ...10 Insulation Blankets ...11 Combustion Air and Ventilation ...11 Appliances in Unconfined Spaces ...11 Appliances in Confined Spaces ...11 INSTALLING THE WATER HEATER ...
  • Page 6: Get To Know Your Water Heater

    Get to Know Your water heater - Gas Models control assembly Blocked Inlet switch Blocked outlet switch fan prover switch Blower assembly Burner assembly flame sensor hot surface Igniter junction Box Gas control valve thermostat display Board top plastic enclosure * CAUTION HARNESS HAS 120 VAC.
  • Page 7: Installation Considerations

    InstallatIon consIderatIons rouGh In dIMensIons rough-In-dimensions Model Units Inches 68.50 49.25 22.00 125.09 55.88 Top/Side Inlet and Outlet: 3/4” NPT Gas Inlet: 1/2” NPT capacity, Gas and electrical characteristics Approximate Capacity Manifold Pressure Model U.S. Gals. Liters Gas Type Nat./LP All models - Maximum Supply Pressure: 14 inches W.C. (3.48kPa) Minimum Supply Pressure for Natural Gas: 3.50”...
  • Page 8: Commonwealth Of Massachusetts

    InstallatIon requIreMents for the coMMonwealth of Massachusetts For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: InstallatIon of carBon MonoXIde detectors At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the sidewall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements provided that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed. approved carBon MonoXIde detectors Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and CSA certified. sIGnaGe A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent 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 oBstructIons.” InspectIon The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
  • Page 9: Water Piping - Mixing Valve Usage

    water pIpInG - MIXInG valve usaGe * the side recirculation loop connections may not be used as the primary water inlet and outlet connections. for your convenience, plugs are installed in these fittings at the factory. Remove these plugs if needed for your specific installation. Otherwise (as with all connections) check for leaks while filling the tank with water and after completing the installation.
  • Page 10: Facts To Consider About The Location

    facts to consIder aBout the locatIon Carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. this water heater is not for use in manufactured (mobile) homes or outdoor installation. Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed: 1. Select a location indoors as close as practical to the vent terminal or location to which the water heater vent piping is going to be connected, and as centralized with the water piping system as possible. 2. Selected location must provide adequate clearances for servicing and proper operation of the water heater.
  • Page 11: Facts To Consider About Location

    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. Minimum clearances between the water heater and combustible construction are 0 inch at the sides and rear, 5.5” (14.0 cm) from the front and 12” (30.5 cm) from the top. (Standard clearance.) If clearances stated on the heater differ from standard clearances, install water heater according to clearances stated on the heater. Adequate clearance 24” (61.0 cm) for servicing this appliance should be considered before installation, such as changing the anodes, etc. A minimum clearance of 5.5” (14.0 cm) must be allowed for access to replaceable parts such as the thermostats, drain valve and relief valve. When installing the heater, consideration must be given to proper location. Location selected should be as close to the wall as practicable and as centralized with the water piping system as possible. FIGURE 4. InsulatIon BlanKets Insulation blankets are available to the general public for external use on gas water heaters but are not necessary with these products. The...
  • Page 12 a free area of one square inch per 1000 Btu/hr (22 cm total input of all appliances in the enclosure, but not less than 100 square inches (645 cm If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors. When directly communicating with the outdoors or communicating through vertical ducts, two permanent openings, located in the above manner, should be provided. Each opening should have a free area of not less than one square inch per 4000 Btu/hr (5.5 cm appliances in the enclosure. If horizontal ducts are used, each opening should have a free area of not less than one square inch per 2000 Btu/ hr (11cm /kW) of the total input of all appliances in the enclosure. a. all aIr froM InsIde BuIldInGs: (See Figure 5 and 6) The confined space should be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space should be considered in making this determination.
  • Page 13: Installing The Water Heater

    InstallInG the new water heater cheMIcal vapor corrosIon 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), waxes, and process chemicals are typical compounds which are potentially corrosive.
  • Page 14: Temperature-Pressure Relief Valve

    Figures 2 and 10 show the typical attachment of the water piping to the water heater. The water heater is equipped with 3/4 inch NPT water connections. note: If using copper tubing, solder tubing to an adapter before attaching the adapter to the water heater connections. do not solder the water lines directly to the water heater connections.
  • Page 15: Gas Piping

    The temperature-pressure relief valve must be manually operated at least once a year , see Figure 28. Caution should be taken to ensure that (1) no one is in front of or around the outlet of the temperature-pressure relief valve discharge line, and (2) the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot. If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater, follow the draining instructions, and replace the temperature-pressure relief valve with a new one. Gas pIpInG Make sure gas supplied is same type listed on model rating plate. The inlet gas pressure must not exceed 14 inch water column (3.5 kPa) for natural and propane gas (L.P.). The minimum inlet gas pressure shown on rating plate is that which will permit firing at rated input. All gas piping must comply with local codes and ordinances or with the National Fuel Gas Code (ANSI Z223.1/ NFPA-54) or the Natural Gas and Propane Installation Code (CAN/CSA B149.1) whichever applies. Copper or brass tubing and fittings (except tin lined copper...
  • Page 16: Sediment Traps

    sedIMent traps A sediment trap should be installed as close to the gas inlet of the water heater as practical at the time of water heater installation. The sediment trap should be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion. 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 drip leg (sometimes called a sediment trap) must be incorporated in the piping. The drip leg must be readily accessible. Install in accordance with the “Gas Piping” section. Refer to the current edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) or the Natural Gas and Propane Installation Code (CAN/CSA B149.1). fIllInG the water heater Never use this water heater unless it is completely full of water. To prevent damage to the tank, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” gas to the water heater. To fill the water heater with water: 1. Close the water heater drain valve by turning the handle to the right (clockwise). The drain valve is on the lower front of the water heater. 2. Open the cold water supply valve to the water heater. note: the cold water supply valve must be left open when the water heater is in use.
  • Page 17 u.s. power vent warnInG VENT HOOD(S) MAY BE eXtreMelY hot durInG operatIon. FIGURE 15A. cautIon to prevent eXhaustInG products froM cIrculatInG to the aIr IntaKe In wIndY/cold areas, the MaXIMuM practIcal dIstance Between these two terMInals Is recoMMended. canadIan power vent warnInG VENT HOOD(S) MAY BE eXtreMelY hot...
  • Page 18 u.s. dIrect vent warnInG VENT HOOD(S) MAY BE eXtreMelY hot durInG operatIon. FIGURE 15C. cautIon to prevent eXhaustInG products froM cIrculatInG to the aIr IntaKe In wIndY/cold areas, the MaXIMuM practIcal dIstance Between these two terMInals Is recoMMended. canadIan dIrect vent warnInG VENT HOOD(S) MAY BE eXtreMelY hot...
  • Page 19: Planning The Vent System

    plannInG the vent sYsteM Plan the route of the vent system from the exhaust elbow to the planned location of the vent terminal. 1. Layout total vent system to use a minimum of vent pipe and elbows. 2. This water heater is capable of venting flue gases equivalent to 25’ (7.6 m) of 2” pipe, 65’ (19.8 m) of 3” pipe, or 128’ (39.0 m) of 4” pipe as listed in Table 1. TABLE 1 Number of 2” Maximum 3” Maximum 90° Elbows Pipe - ft. (m) Pipe - ft. (m) 20 (6.1) 60 (18.3) 15 (4.6)
  • Page 20: Installation Of Vent System

    InstallatIon of 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 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.
  • Page 21: Installation Sequence

    InstallatIon sequence For installations in the City of Los Angeles, California Category IV PVC Pipe such as that manufactured by Brownline Pipe Company, must be used as vent pipe material. cautIon vent terMInals supplIed wIth heater Must Be used. NOTE: BEFORE BEGINNING INSTALLATION OF ANY VENT PIPE READ THE VENT PIPE MANUFACTURER’S INSTALLATION INSTRUCTIONS. 1. After the points of termination have been determined, use the cover plates as templates to mark the holes for the vent pipes to be inserted through the wall. BEWARE OF CONCEALED WIRING AND PIPING INSIDE OF WALL.
  • Page 22: Installation Of Vent System, Sidewall

    InstallatIon of vent sYsteM, sIdewall With the route of the venting system and selection of materials completed, as discussed in the 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. FIGURE 22. 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 venting system start at the blower assembly and run to the coupling on the inside wall of the vent terminal, Figure 18A. The vent system piping should be supported every 5 feet (1.5 m) of vertical run and every 3 feet (91 cm) of horizontal run. All piping and fittings must be joined by the proper procedures as described under: VENT PIPE PREPARATION.
  • Page 23: Safety Considerations

    This concentric vent termination kit may be used with 3 or 4 inch diameter pipe systems. When connecting to a 4 in. diameter pipe system a 3 x 4 inch field supplied reducer is to be installed at the intake and exhaust connection of the concentric vent termination kit. safetY consIderatIons Installing and servicing water heating equipment can be hazardous due to gas and electrical components. Installation and service of the concentric vent termination requires ability equivalent to that of a qualified installer or service agent, see page 2. All precautions in the literature, on tags, and labels attached to the unit must be observed. Follow all safety codes. Wear safety glasses and work gloves. fIGure a. fIGure B. Dimension 21 1/8 in. may be lengthened to 60 in. maximum. Dimension 21 1/8 in. may also be shortened by cutting the pipes, provided in the kit, to 12 in.
  • Page 24 5. Secure assembly to roof structure as shown in Figure E using field supplied metal strapping or equivalent support material. note: ensure termination height is above the roof surface or anticipated snow level (1 ft. in U.S.A. or 1-1/2 ft. in Canada) as shown in figure c. 6. Install rain cap and small diameter pipe assembly in roof penetration assembly, Ensure small diameter pipe i s c e m e n t e d a n d b o t t o m e d i n Y c o n c e n t r i c f i t t i n g .
  • Page 25: Multi-Concentric Vent Terminations

    8. Operate heater through 1 heat cycle to ensure combustion-air and vent pipes are properly connected to concentric vent termination connections. fIGure G. MultI-concentrIc vent terMInatIons When two or more appliances are directed vented with concentric vent terminations near each other, each appliance must be individually vented. NEVER common vent this appliance. When two or more appliances are direct vented using concentric vent terminations, the appliances may be vented as shown in Figure H and Figure I.
  • Page 26: Vent Pipe Preparation

    vent pIpe preparatIon 1. INITIAL PREPARATION. A.) Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. B.) Know t he p hysical a nd c hemical c haracteristics a nd l imitations o f t he PVC and CPVC piping materials that you are about to use. C.) Know the reputation of your manufacturer and their products. D.) Know y our o wn q ualifications o r t hose o f y our c ontractor. T he s olvent welding t echnique o f j oining P VC a nd C PVC p ipe i s a s pecialized s kill just as any other pipe fitting technique.
  • Page 27 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. step B C. Test dry fit of the joint Tapered fitting sockets are designed so that an interfaced 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.
  • Page 28: Controls And Switches

    controls and swItches This model is provided with three pressure switches. These switches are essential to the safe and proper operation of the unit. All switches are wired in series. The controller is set up to shut the unit down whenever there is a failure of any of the switches. It is important to understand the purpose of each switch. FIGURE 12. Blower prover swItch (SEE FIGURE 12) The Blower Prover Switch is provided on the heater to verify that the fan is operating. It is a positive pressure switch whose electrical contacts are normally open. When the fan increases the pressure in the burner, the pressure switch will allow the electrical contacts to close. The pressure switch is connected to the burner tap by a piece of tygon tubing. This tubing must be connected in order for the switch to change the electrical contacts. The controller requires that the electrical contacts on this air flow switch be open before it will allow the blower to come on. BlocKed eXhaust swItch (SEE FIGURE 12) The Blocked Exhaust Switch is set up to shut the unit off when a build-up of positive pressure in the exhaust vent pipe occurs. This switch is a positive pressure switch that requires an increase in pressure to change the electrical contacts from normally closed to open. When this switch prevents the unit from igniting, most likely the exhaust is blocked by some means. Check to see if the condensate...
  • Page 29: Power Vent Wiring Schematic

    LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. cautIon POWER VENT WIRING SCHEMATIC - FIGURE 24. THIS WATER HEATER IS POLARITY SENSITVE. B EFO R E A PPLYI N G ELECTRICITY TO THIS HEATER BE CERTAIN THAT SUPPLY NEUTRAL...
  • Page 30: Lighting & Operating Label

    for Your safetY read Before lIGhtInG warnInG: or explosion may result causing property damage, personal injury or loss of life. Before operatInG: entIre sYsteM Must Be fIlled wIth water and aIr purGed froM all lInes. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. do not try to light the burner by hand. B.
  • Page 31: Temperature Regulation

    teMperature reGulatIon It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperatures 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. HOT WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the infirm, or physically/mentally handicapped. If anyone using hot water from this heater fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a mixing valve, should be used at the hot water taps used by these people or at the water heater. Mixing valves are available...
  • Page 32: Using The Electronic Controller

    usInG the electronIc controller 1. Overview Interaction with the water heater controller is done through an up, a down, and three operation buttons. These buttons are illustrated to the right. Operation of the three lower buttons is defined immediately above them on the screen. The [UP] and [DN] buttons are used to navigate through the menus and make adjustments to the water heater. While the water heater is operating, the user interface will display the desktop screen (if there are no active faults or warnings). An example of this screen is shown to the right. The temperature on this screen is the Operating Set Point. The Operating Set Point is the temperature at which the water heater will maintain the water inside the tank. The second line on the screen is a text description of the Operational State of the water heater (please see Operating States for more details). The following status icons describe graphically operational details of the heater. The legend of all the status icons is listed below.
  • Page 33: Operating States

    2. Operating States In the main desktop screen, there are some specific Operating States that are indicated on the status line. These are summarized below: Adjusting the Operating Set Point The Operating Set Point of this water heater determines the regulated temperature for the water in the tank. This parameter is adjusted in the Temperature menu. Items in this menu allow you to monitor different temperature readings in the tank along with adjusting the Operating Set Point. actIon: From the desktop screen, press Menu. dIsplaY: actIon: From the Main Menu, press select to enter the "Temperatures" screen. dIsplaY: actIon: Press change then use the up and down buttons to change the Set Point.
  • Page 34: Changing The Display Units

    3. Changing the Display Units The display interface to the heater has the option of selecting between degrees Fahrenheit and degrees Celsius for temperature displays. This can be found in the “Display Settings” menu. Also in this menu, you may adjust how the backlight operates and the contrast of the LCD screen. actIon: From the Main Menu, press the Down button to highlight "Display Settings" then press Select. dIsplaY: actIon: Use the UP and DOWN buttons to highlight the desired setting. Then press Change. Again, use the UP and DOWN buttons to scroll through the options for that setting. dIsplaY: actIon: Press update to accept the change or cancel to reject it. dIsplaY: 4. Fault Conditions This water heater is equipped with electronic controls that have the ability to monitor almost all aspects of the water heater operation. In the case that there is an undesirable or unsafe condition that occurs, the water heater controls will detect this condition and determine the appropriate action. Part of this is displaying the information on the LCD in plain text that accurately describes the condition and diagnostics...
  • Page 35: Viewing The Fault History

    actIon: To get to the current fault information screen, press Menu. dIsplaY: actIon: Press the down button to highlight "current Fault" and press select. dIsplaY: actIon: Press the down button for more information. dIsplaY: 6. Viewing the Fault History The controller for this water heater will store a history of ten of the last Fault conditions that occurred. This is stored in the Fault History. Along with all the information about the fault, including a estimate time of when the fault occurred, information regarding the advanced diagnostics for that fault can be accessed at any time.
  • Page 36: For Your Information

    start up condItIons sMoKe/odor It is not uncommon to experience a small amount of smoke and odor during the initial start-up. This is due to burning off of oil from metal parts, and will disappear in a short while. therMal eXpansIon Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back flow preventers, etc. to control these types of problems. When these devices are not equipped with an internal by pass, and no other measures are taken, the devices cause the water system...
  • Page 37: Periodic Maintenance

    ventInG sYsteM InspectIon At least once a year a visual inspection should be made of the venting system. You should look for: 1. Obstructions which could cause improper venting. The combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which could cause improper venting or leakage of combustion products. Be sure the vent piping is properly connected to prevent escape of dangerous flue gasses which could cause deadly asphyxiation. Obstructions and deteriorated vent systems may present serious health risk or asphyxiation. Chemical vapor corrosion of the flue and vent system may occur if air for combustion contains certain chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals are typical compounds which are potentially corrosive. If after inspection of the vent system you found sooting or deterioration, 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.
  • Page 38: Anode Rod Inspection

    INSTALLED IN SUITABLE AREA: To insure sufficient ventilation and combustion air supply, proper clearances from the water heater must be maintained. See “Facts to Consider About Location” section. Combustible materials such as clothing, cleaning materials, or flammable liquids, etc. must not be placed against or adjacent to the water heater which can cause a fire. anode rod InspectIon The anode rod is used to protect the tank from corrosion. Most hot water tanks are equipped with an anode rod. The submerged rod sacrifices itself to protect the tank. Instead of corroding the tank, water ions attack and eat away the anode rod. This does not affect the water’s taste or color. The rod must be maintained to keep the tank in operating condition. Anode deterioration depends on water conductivity, not necessarily water condition. A corroded or pitted anode rod indicates high water conductivity and should be checked and/or replaced more often than an anode rod that appears to be intact. Replacement of a depleted anode rod can extend the life of your water heater. Inspection should be conducted by a qualified technician, and at a minimum should be checked annually after the warranty period. teMperature-pressure relIef valve operatIon FIGURE 28.
  • Page 39: Service

    servIce If a condition persists or you are uncertain about the operation of the water heater contact a qualified service agency. Use this guide to check a “Leaking” water heater. Many suspected “Leakers” are not leaking tanks. Often the source of the water can be found and corrected. If you are not thoroughly familiar with gas codes, your water heater, and safety practices, contact your gas supplier or qualified installer to check the water heater. Read this manual first. Then before checking the water heater make sure the gas supply has been turned “OFF”, and never turn the gas “ON” before the tank is completely full of water. leaKaGe checKpoInts Never use this water heater unless it is completely filled with water. To prevent damage to the tank, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” gas to the water heater. A *Condensation may be seen on pipes in humid weather or pipe connections may be leaking. B. *The anode rod fitting may be leaking. C. Small amounts of water from temperature-pressure relief valve may be due to thermal expansion or high water pressure in your area. D. *The temperature-pressure relief valve may be leaking at the tank fitting.
  • Page 40: Troubleshooting

    trouBleshootInG GuIdelInes These guidelines should be utilized by a qualified service agent. proBleMs not enouGh hot water VENT PIPE TOO HOT (ABOVE 170°F [77°C]) Yellow flaMe condensatIon water leaKs leaKInG t & p hot water odors (refer to cathodic protection) hot water too hot water heater sounds SIZZLING - RUMBLING sootInG Burner wIll not staY lIt-Goes out 4-5 SECONDS...
  • Page 41: Notes

    notes...
  • Page 42: Notes

    notes...
  • Page 43: Warranty

    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 (the warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, the warrantor will furnish the ORIGINAL OWNER a replacement 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 WATER HEATER REPLACEMENT MODEL OR PART WILL BE WARRANTED FORONLYTHE UNEXPIRED PORTION OF THE ORIGINAL WARRANTY The warranty period will be determined by the original installation date of the water heater. PROOF-OF-PURCHASEAND PROOF-OF-INSTALLATION ARE NECESSARY TO VALIDATE THIS WARRANTY This warranty is not transferable.
  • Page 44 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Phone: 800-527-1953 Fax: 800-433-2515 www.hotwater.com...

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