Kenmore Economizer 6 Manual
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prescribed temperature-pressure relief valve installed in the designated opening in the water heater in place of the factory furnished valve. For safe operation of the water heater, the relief valve must not be removed from its designated opening nor plugged. The temperature-pressure relief valve must be installed directly into the fitting of the water heater designed for the relief valve. Position the valve downward and provide tubing so that any discharge will exit only within 6 inches (153 mm) above, or at any distance below the structural floor. Be certain that no contact is made with any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 feet (9.14 m), 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 between the relief valve and the tank. Do not connect tubing directly to discharge drain unless a 6 inch air gap is provided. To prevent bodily injury, hazard to life, or property damage, the relief valve must be allowed to discharge water in quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage. The Discharge Pipe: • Shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions. • Shall not be plugged or blocked. • Shall be of material listed for hot water distribution. • Shall be installed so as to allow complete drainage of both the temperature-pressure relief valve, and the discharge pipe. • Shall terminate at an adequate drain. • Shall not have any shut-off valve between the relief valve and tank nor in the discharge pipe. The temperature-pressure relief valve must be manually operated at least once a year. 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. FIGURE 10. Filling the Water Heater Never use this water heater unless it is completely full of water. To prevent damage to the tank and heating element, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” power. To fill the water heater with water: • Close the water heater drain valve by turning the handle to the right (clockwise). The drain valve is located on the lower front of the water heater. • 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. • To insure complete filling of the tank, allow air to exit by opening the nearest hot water faucet. Allow water to run until a constant flow is obtained. This will let air out of the water heater and the piping. • Check all new water piping for leaks. Repair as needed.
12 Wiring You must provide all wiring of the proper size outside of the water heater. You must obey local codes and electric company requirements when you install this wiring. If you are not familiar with electric codes and practices, or if you have any doubt, even the slightest doubt, in your ability to connect the wiring to this water heater, obtain the service of a competent electrician. Contact your Sears salesperson to arrange for a professional electrician. WIRING DIAGRAMS C-2 C-2 STANDARD WIRING FOR STANDARD WIRING FOR SINGLE ELEMENT 240 VOLT SINGLE ELEMENT 120 VOLT FIGURE 11. WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY: This water heater is equipped for one type voltage only. Check the rating plate near the bottom access panel for the correct voltage. DO NOT use this water heater with any voltage other than the one shown on the model rating plate. Failure to use the correct voltage can cause problems which can result in DEATH, SERIOUS BODILY INJURY , OR PROPERTY DAMAGE . If you have any questions or doubts consult your electric company. If wiring from your fuse box or circuit breaker box was aluminum for your old water heater, replace it with copper wire. If you wish to reuse the existing aluminum wire, have the connection at the water heater made by a competent electrician. Contact your Sears salesperson to arrange for a professional electrician. 1. Provide a way to easily shut off the electric power when working on the water heater. This could be with a circuit breaker or fuse block in the entrance box or a separate disconnect switch. 2. Install and connect a circuit directly from the main fuse or circuit breaker box. This circuit must be the right size and have its own fuse or circuit breaker. Refer to the chart in the “Product Specifications” section for the correct size wire and fuse or circuit breaker. 3. If metal conduit is used for the grounding conductor: A. The grounding electrode conductor shall be of copper, aluminum, or copperclad aluminum. The material shall be of one continuous length without a splice or joint. B. R i g i d m e t a l c o n d u i t , i n t e r m e d i a t e m e t a l c o n d u i t , o r electrical metallic tubing may be used for the grounding means if conduit or tubing is terminated in fittings approved for grounding. C. Flexible metal conduit or flexible metallic tubing shall be permitted for grounding if all the following conditions are met: • The length in any ground return path does not exceed 6 feet. • The circuit conductors contained therein are protected by overcurrent devices rated at 20 amperes or less. • The conduit or tubing is terminated in fittings approved for grounding. For complete grounding details and all allowable exceptions, refer to the current edition of the NEC - National Electrical Code NFPA 70. 4. A standard 1/2” conduit opening has been made in the water heater junction box for the conduit connection. 5. Use wire nuts and connect the power supply wiring to the wires inside the water heater ’s junction box. 6. The water heater must be electrically “grounded” by the installer. A green ground screw has been provided on the water heater ’s junction box. Connect ground wire to this location. 7. R e p l a c e t h e w i r i n g j u n c t i o n c o v e r u s i n g t h e s c r e w provided. WIRING CONNECTIONS FIGURE 12.
TEMPERATURE SETTINGS It is recommended that the dial be set lower whenever possible. Temperature Time to Produce 2nd & 3rd Setting Degree Burns on Adult Skin VERY HOT = approx. 160°F (71°C) About 1/2 second C = approx. 150°F (66°C) About 1-1/2 seconds B = approx. 140°F (60°C) Less than 5 seconds A = approx. 130°F (54°C) About 30 seconds HOT = approx. 120°F (49°C) More than 5 minutes NOTE: Water temperature range of 120°—140°F (49°-60°C) recommended by most dishwasher manufacturers. Thermostat Adjustment (Refer to thermostat illustrations under “Thermostat” section) The thermostat is adjustable if a different water temperature is desired. Read all warnings in the “Temperature-Regulation” section before proceeding. Temperature Regulation HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy 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 in your home 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, some type of tempering device, 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 at plumbing supply or hardware stores. Follow manufacturers instructions for installation of the valves, Before changing the factory setting of the thermostat, read the “Temperature Regulation” section in this manual. Never allow small children to use a hot water tap, or to draw their own bath water. Never leave a child or handicapped person unattended in a bathtub or shower. Thermostat The thermostat of this water heater has been factory set at a position which approximates 120°F (49°C), to reduce the risk of scald injury. The thermostat is adjustable if a different water temperature is desired. Read all warnings in this manual and on the water heating before proceeding. SERVICE AND ADjUSTMENT
1. Turn “OFF” the electric power to the water heater at the junction box. 2. Take off the access panel and remove the insulation cap with handle. 3. The slotted adjustment (using a screwdriver) can be turned clockwise ( ) to increase the temperature setting or counter clockwise ( ) to decrease the temperature setting. 4. R e p l a c e t h e i n s u l a t i o n c a p w i t h h a n d l e a n d a c c e s s panel. 5. Turn “ON” the power supply. Temperature-Pressure Relief Valve Operation The temperature-pressure relief valve must be manually operated at least once a year. The temperature-pressure relief valve must be manually operated at least once a year. 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 property damage or bodily injury. The water may be extremely hot. FIGURE 14. 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. Failure to install and maintain a new properly listed temperature- pressure relief valve will release the manufacturer from any claim which might result from excessive temperature or pressure. If the temperature-pressure relief valve on the appliance weeps or discharges periodically, this may be due to thermal expansion. Your water heater may have a check valve installed in the water line or a water meter with a check valve. Consult your local Sears Service Center for further information. Do not plug the temperature-pressure relief valve. Draining The water heater should be drained if being shut down during freezing temperatures. Also, periodic draining and cleaning of sediment from the tank may be necessary. 1. Before beginning turn “OFF” the electric power supply to the water heater. 2. CLOSE the cold water inlet valve to the water heater. 3. OPEN a nearby hot water faucet and leave open to allow for draining. 4. Connect a hose to the drain valve and terminate to an adequate drain or outdoors. 5. OPEN the water heater drain valve to allow for tank draining. NOTE: 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. 6. Close the drain valve. 7. Follow “Filling the Water Heater” instructions in the “Installation Instructions” section. 8. Turn “ON” power to the water heater. Never use this water heater unless it is completely full of water. To prevent damage to the tank and heating element, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” power.
5 Thermostat Removal/Replacement 1. Turn “OFF” the electrical power to the water heater at the junction box. HAZARD OF ELECTRICAL SHOCK! Before removing any access panels or servicing the water heater, make sure the electrical supply to the water heater is turned “OFF”. Failure to do this could result in DEATH, SERIOUS BODILY INJURY OR PROPERTY DAMAGE. 2. Remove the screw(s) securing the access panel and remove panel and the insulation block. 3. Lift out the tab as shown below to unclip the terminal cover from the thermostat. The terminal cover can now be removed from the thermostat. FIGURE 15. 4. Disconnect wires from thermostat. 5. Remove the thermostat from behind the thermostat bracket. 6. Place the new thermostat in the bracket making sure it fits firmly against the tank. 7. Attach the wires to the new thermostat. NOTE: Some of the terminals may require straight-in wiring through an eye-opening. If wires are now looped, recut and strip wire 3/8” to a straight length and insert. 8. Put plastic terminal cover back in place. 9. Replace the insulation block to cover the thermostat. 10. Replace access panel, then turn the electric power on. Element Cleaning/Replacement To remove the element from your tank in order to clean or replace it: 1. Before beginning turn “OFF” the electric power supply to the water heater. FIGURE 16. HAZARD OF ELECTRICAL SHOCK! Before removing any access panels or servicing the water heater, make sure the electrical supply to the water heater is turned “OFF”. Failure to do this could result in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. 2. Turn off the water supply to the water heater at the water Shut-off valve or water meter. FIGURE 17. 3. Attach a hose to the water heater drain valve and put the other end in a floor drain or outdoors. Open the water heater drain valve. Open a nearby hot water faucet which will relieve pressure in the water heater and speed draining. FIGURE 18. The water passing out of the drain valve may be extremely hot. To avoid being scalded, make sure all connections are tight and that the water flow is directed away from any person. 4. Remove the screw(s) securing the access panel, and remove panel.
6 FIGURE 19. 5. Remove insulation to expose the terminal cover. FIGURE 20. 6. Lift out the tab as shown to unclip the terminal cover from the thermostat. The terminal cover can now be removed from the thermostat. FIGURE 21. 7. Disconnect the two wires on the element and unscrew the old element from the tank. FIGURE 22. 8. Clean the area around the element opening. Remove any sediment from or around the element opening, inside the tank. 9. If you are cleaning the element you have removed, do so by scraping or soaking in vinegar or a de-liming solution. Replacement elements must (1) be the same voltage and (2) no greater wattage than listed on the model rating plate affixed to the water heater. 10. A new gasket should be used in all cases to prevent a possible water leak. (See Element Gasket in the “Parts Order List ” Chart). Place the new element gasket on the thread side of the cleaned or new element and screw into tank, securing tightly using an element wrench. FIGURE 23. 11. Close the water heater drain valve by turning the handle to the right (clockwise). 12. 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. 13. To insure complete filling of the tank, allow air to exit by opening the nearest hot water faucet. Allow water to run until a constant flow is obtained. This will let air out of the water heater and the piping. Never use this water heater unless it is completely full of water. To prevent damage to the tank and heating element, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” power. 14. Check element for water leaks. If leakage occurs, tighten element or repeat steps 2 and 3, remove element and reposition gasket. Then repeat steps 10 through 14. 15. Reconnect the two wires to the element and then check to make sure the thermostat remains firmly against the surface of the tank.
7 FIGURE 24. 16. Replace terminal cover on thermostat making sure that the locking tabs on the terminal cover are in place. FIGURE 25. 17. R e p l a c e t h e i n s u l a t i o n t o c o v e r t h e t h e r m o s t a t a n d the element. FIGURE 26. 18. Replace access panel. 19. Turn “ON” electric power to water heater. FIGURE 27. Drain Valve Washer Replacement. NOTE: For replacement, use a 17/32” x 13/64” x 1/8” thick w a s h e r a v a i l a b l e a t y o u r n e a r e s t h a r d w a r e s t o r e . F o r ordering a replacement washer, refer to the “Repair Parts List” section. • Before beginning turn “OFF” the electrical power supply to the water heater. • Follow “Draining” instructions in the “Service and Adjustment” section. • Turning counter clockwise, remove the hex cap below the screw handle. • Remove the washer and put the new one in place. • Screw the handle and cap assembly back into the drain valve and retighten using a wrench. DO NOT OVER TIGHTEN. • Follow “Filling the Water Heater” instructions in the “Installation Instructions” section. • Check for leaks. • Turn “ON” electric power to the water heater. FIGURE 28. 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 deteriorates to protect the tank. Instead of corroding the tank, water ions attack and eat away the anode rod. This does not effect 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 the depleted anode rod can extend the life of your water heater. Inspection should be conducted by calling the Sears Service Center for an authorized contractor. At a minimum, the anode(s) should be checked annually after the warranty period. Service Before calling for repair service, read the “Start Up Conditions” and “Operational Conditions” found in the Troubleshooting section of this manual. If a condition persists or you are uncertain about the operation of the water heater, let a qualified person check it out. C o n t a c t S e a r s R e p a i r S e r v i c e s a t 1 - 8 0 0 - 4 - M Y- H O M E (1-800-469-4663).
8 TROUBLESHOOTING Start Up Conditions 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 to be closed. As water is heated, it expands (thermal expansion) and closed systems do not allow for the expansion of heated water. The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s temperature-pressure relief valve is reached, the valve will relieve the excess pressure. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. This is an unacceptable condition and must be corrected. It is recommended that any devices installed which could create a closed system have a by-pass and/or the system have an expansion tank to relieve the pressure built by thermal expansion in the water system. Thermal expansion tanks are available from Sears stores and through the Sears Service Centers. Contact the local plumbing inspector, water supplier and/or the Sears Service Center for assistance in controlling these situations. Thermal Expansion Tank Specifications Tank Dimensions Pipe Model Capacity in Inches Fitting Number In Gallons Diameter Length On Tank 153.331020 2 8 (203 mm) 12-3/4 (323 mm) 3/4” Male Expansion Tank Sizing Chart Expansion Inlet* Water Heater Capacity (Gallons) Tank Water Capacity Pressure 6 10 20 30 Needed 40-80 psi 2 2 2 2 *Highest recorded inlet water pressure in a 24 hour period or regulated water pressure. NOTE: Expansion tanks are pre-charged with a 40 psi air charge. If the inlet water pressure is higher than 40 psi, the expansion tank’s air pressure must be adjusted to match that pressure, but must not be higher than 80 psi. FIGURE 29. STRANGE SOUNDS Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not represent harmful or dangerous conditions. Operational Conditions SMELLY WATER In each glass-lined water heater there is installed one anode rod (see parts section) for corrosion protection of the tank. Certain water conditions will cause a reaction between this rod and the water. The most common complaint associated with the anode rod is one of a “rotten egg smell”. This odor is derived from hydrogen sulfide gas dissolved in the water. The smell is the result of four factors which must all be present for the odor to develop: A. A concentration of sulfate in the supply water. B. Little or no dissolved oxygen in the water. C. A sulfate reducing bacteria within the water heater. (This harmless bacteria is non-toxic to humans.) D. An excess of active hydrogen in the tank. This is caused by corrosion protective action of the anode.
19 Smelly water may be eliminated or reduced in some water heater models by replacing the anode rod(s) with one of less active material, and the chlorinating the water heater tank and all water lines. Contact the local Sears Service Center for further information concerning an Anode Replacement Kit #9001453 and this Chlorination Treatment. Anode replacement and chlorination of the tank are not covered by the water heater’s limited warranty. If smelly water persists, after anode replacement and chlorination treatment, you should consider chlorinating or aerating your water supply. Do not remove the anode leaving the tank unprotected. By doing so, all warranty on the water heater tank is voided. “AIR” IN HOT WATER FAUCETS HYDROGEN GAS: Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable and explosive. To prevent the possibility of injury under these conditions, we recommend the hot water faucet be opened for several minutes at the kitchen sink before any 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 escaping through the pipe as the hot water faucet is opened. There must be no smoking or open flame near the faucet at the time it is open. RUMBLING NOISE In some water areas, scale or mineral deposits will build up on your heating elements. This buildup will cause a rumbling noise. Follow “Element Cleaning/Replacement” instructions to clean and replace the elements. HIGH TEMPERATURE SHUT OFF SYSTEM The water heater has a high limit shut off system with a reset button located on the thermostat. Follow the resetting instructions which refer to the high limit behind the access panel. 1. Before beginning, turn “OFF” electrical power supply to the water heater. FIGURE 30. 2. Remove the screw(s) securing the access panel and remove panel. 3. Remove the insulation. 4. Reset the high limit by pushing in the red button marked “RESET”. FIGURE 31. 5. Replace the insulation so that it completely covers the thermostat and element. 6. Replace the access panel. 7. Turn “ON” electric power to the water heater. If the high limit must be reset again, call Sears Service Department to find out why high limit turned “OFF” the electric power.
20 NOT ENOUGH OR NO HOT WATER 1. In a new installation, the water heater may not be properly connected. Make sure the cold water supply valve is open. Review and check piping installation. Make sure that the cold water line is connected to the cold water inlet to the water heater and the hot water line to the hot water outlet on the water heater. 2. Make sure the electrical supply to your water heater is “ON”. 3. Check for loose or blown fuses in your water heater circuit. Circuit breakers weaken with age and may not handle their rated load and should be replaced. 4. Make certain the disconnect switch, if used, is in the “ON” position. 5. Check to see the electric service to your house has not been interrupted. If this is the case, contact the electric company. 6. Is the thermostat set to the desired temperature? See “Temperature Regulation” section. 7. If you had experienced very hot water and now no hot water, the problem may be due to the high temperature shut off system. See “High Temperature Shut Off System” in the “Troubleshooting” section. 8. During very cold weather, the incoming water will also be colder and it will require a longer time to become heated. 9. The hot water usage may exceed the capacity of the water heater. If so, wait for water heater to recover after abnormal demand. Also examine pipes and faucets for possible water leaks. 10. If you can not determine the problem, then call the Sears Service Department. WATER IS TOO HOT Adjust the thermostat to a lower setting. See the “Temperature Regulation” section.