Kenmore Electric Power Miser 9 Manual
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11 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 valve between the relief valve and tank. 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: 1. 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. 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. 3. 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. 4. Check all new water piping for leaks. Repair as needed.
12 Converting the Lower Element These instructions only cover the conversion of the convertible element, read this entire manual before attempting to install or operate the water heater. The water heater is factory set to operate at 3800 watts. The lower element can be converted to operate at 5500 watts. Refer to “Facts to Consider About the Convertible Lower Element” section. The Upper Element, (if double element model) is a conventional 3800 watt element which only operates at its rated wattage on 240 volts. (See rating plate on the water heater.) The lower Element of the water heater can be converted from operation at 3800 watts to 5500 watts on a 240 volt system. If after reading these instructions and this manual, if you do not understand any portion call Sears Service Center. Before making the conversion to 5500 watts, check the (1) power supply . . . must be 240 volts, (2) wiring . . . 10 gauge AWG @ Type TW, 60°C or equivalent, and (3) Circuit breakers or fusing . . .capable of 30 amp loading. Also, the installation must conform with this manual, local codes and electric utility rules. Failure to comply can result in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. NOTE: Whether or not the element conversion is made the model rating plate must be marked. Using a hard point ink pen, check the appropriate block within the model rating plate, which is located adjacent to the lower access panel. FIGURE 11. Necessary element conversion parts are located in a small bag contained within the electrical junction box on top of the water heater. FIGURE 12. 1. Before beginning the conversion turn “OFF” electric power supply to the water heater. FIGURE 13. 2. The convertible element is located behind the lower access panel of the water heater. Remove the two screws securing the access panel, and remove panel. FIGURE 14. 3. Remove the insulation cap with handle to expose the terminal cover. FIGURE 15. 4. Lower Element: Lift out the tab as shown to unclip the terminal cover from the thermostat. The terminal cover can now be removed from the thermostat.
13 FIGURE 16. 5. Remove the screws from terminal 2 of the element, and move the looped end of the wire aside. FIGURE 17. 6. The buss bar is labeled 5500 W. Place the buss bar over terminals 2 and 3 with the 5500 W visible. Install the extra screw provided into terminal 3. FIGURE 18. 7. The wire removed from terminal 2 has a looped end. It must remain looped and now be placed (as shown) on top of the buss bar, over the opening of terminal 2, and secured using the remaining screw. FIGURE 19. 8. Tighten terminals 2 and 3 to ensure proper electrical connection. Failure to tighten terminal screws can cause a fire which can result in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. 9. Replace terminal cover on thermostat making sure that the locking tabs on the terminal cover are in place. Make sure the thermostat is flush against the tank, the terminal cover is in place, and the insulation is replaced. Failure to do so can result in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. 10. Replace the insulation cap with handle so that it completely covers the thermostat and element. FIGURE 20.
14 11. Replace the access panel. FIGURE 21. 12. Complete wiring to the water heater, or if completed, turn “ON” electric power to the water heater after filling the tank with water. FIGURE 22. 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. 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. 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. Rigid metal conduit, intermediate metal conduit, or 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.
15 5. Wiring Diagrams (see “Wiring Diagrams” section) have been supplied showing the two most common types of connections between the water heater and the power supply. You can easily see which type connection you have by removing the junction box cover on top of the water heater. •Two Wire Connection Diagrams: is the most common requiring you to simply connect red to red, black to black, and the ground wire to the green ground screw in the junction box of the water heater. •Three Wire Connection Diagram: is used when you are connecting the water heater to a power supply that has a “Time Clock” or “Off Peak” meter. To make these connections refer to block 1 or 2 in this wiring diagram for the type of system you have. NOTE: If you have purchased a three wire connection water heater but you are not on a “Time Clock” or “Off Peak” meter and have a standard two wire connection power supply, simply follow the connection diagram in block 3 of the three wire connection diagram.6. Use wire nuts and connect the power supply wiring to the wires inside the water heater’s junction box. 7. 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. 8. Replace the wiring junction cover using the screw provided. FIGURE 23.
16 Wiring Diagrams FIGURE 25. STANDARD WIRING FOR 2 WIRE LEAD WATER HEATERS NON-SIMULTANEOUS OPERATION 240 VOLT DOUBLE ELEMENT WIRING FOR 3 WIRE LEAD WATER HEATERS NON-SIMULTANEOUS OPERATION 240 VOLT DOUBLE ELEMENT *NOTE: Some lower Hi-Temp Limit Switches may have 4 terminals. Use only the 2 terminals on left.FIGURE 24. A6 A9
17 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, see Temperature Settings table at right. 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 thermostats of this water heater have been factory set at a position which approximates 120°F (49°C), to reduce the risk of scald injury. The upper thermostat is factory set at a position which approximates 120°F (49°C), and is adjustable if a different water temperature is desired. Read all warnings in this manual and on the water heating before proceeding. ADJUSTABLE UPPER THERMOSTAT FIGURE 26. The lower thermostat is factory set at a position which approximates 120°F (49°C), and is adjustable if a different water temperature is desired. Read all warnings in this manual and on the water heating before proceeding. FIGURE 27. Temperature Settings NOTE: Water temperature range of 120°—140°F (49°-60°C) recommended by most dishwasher manufacturers. Time to Produce 2nd & 3rd Degree Temperature Setting Burns on Adult Skin 160°F (71°C) About 1/2 second 150°F (66°C)About 1-1/2 seconds 140°F (60°C) Less than 5 seconds 130°F (54°C) About 30 seconds 120°F (49°C) More than 5 minutes Upper and Lower Thermostat Adjustments (Refer to thermostat illustrations under “Thermostat” section) SERVICE AND ADJUSTMENT
18 NOTE: It is not necessary to adjust the upper thermostat. However, if it is adjusted above the factory set point of 120°F (49°C), it is recommended that it not be set higher than the lower thermostat setting. The upper and lower thermostats are adjustable if a different water temperature is desired. Read all warnings in the “Temperature-Regulation” section before proceeding. 1. Turn “OFF” the electric power to the water heater at the junction box. 2. Take off the upper and/or lower access panel, 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. Replace the insulation cap with handle and access panel. 5. Turn “ON” the power supply. 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 the 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 calling Sears Service Center. At a minimum the anode(s) should be checked annually after the warranty period. Temperature-Pressure Relief 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 28. 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
19 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. Thermostat Removal/Replacement 1. Turn “OFF” the electrical power to the water heater at the junction box. 2. Remove the access panel and the insulation cap with handle. 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 29. 4. Disconnect wires from the 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 cap with handle to cover the thermostat. 10. Replace access panel, then turn the electric power on. Element Cleaning/Replacement NOTE: These instructions are written for element cleaning and element replacement for the lower element. If it is necessary to clean or replace the upper element, then repeat these instructions. To remove the element from your tank in order to clean or replace it.
20 1. Before beginning turn “OFF” the electric power supply to the water heater. FIGURE 30. 2. Turn off the water supply to the water heater at the water Shut-off valve or water meter. FIGURE 31. 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 32. 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 two screws securing the access panel, and remove panel. FIGURE 33. 5. Remove the insulation cap with handle. FIGURE 34. 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 35. 7. Disconnect the two wires on the element and unscrew the old element from the tank. FIGURE 36.