Owner’s Manual POWER MISER™ 9 ULTRA LOW NOx GAS WATER HEATER FOR POTABLE WATER HEATING ONLY. NOT SUITABLE FOR SPACE HEATING. NOT FOR USE IN MOBILE HOMES. MODEL NO. 153.330960 153.330970 40 Gallon 50 Gallon • • • • • • Safety Instructions Installation Operation Care and Maintenance Troubleshooting Parts List For Your Safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER. This water heater meets the new ANSI Z21.10.
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 hazard. Read and obey all safety messages and instructions throughout this manual.
SAFETY PRECAUTIONS 3
TABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE ...................................................................................................................... 2 SAFETY PRECAUTIONS.............................................................................................................................. 3 TABLE OF CONTENTS................................................................................................................................. 4 CUSTOMER RESPONSIBILITIES ................
CUSTOMER RESPONSIBILITIES ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER. Thank You for purchasing a Kenmore water heater. Properly installed and maintained, it should give you years of trouble free service. If you should decide that you want the new water heater professionally installed by Sears, call 1-800-4-MY-HOME®. They will arrange for prompt, quality installation by Sears authorized contractors.
MATERIALS AND BASIC TOOLS NEEDED Materials Needed To simplify the installation, Sears has available the installation parts shown below. You may or may not need all of these materials, depending on your type of installation. EXPANSION TANKS FOR THERMAL EXPANSION CONDITIONS AVAILABLE IN 2 GALLONS (7.6 LITERS) AND 5 GALLONS (18.9 LITERS) CAPACITY THROUGH LOCAL SEARS STORE OR SERVICE CENTER. WATER HEATER INSTALLATION KIT WITH FLEXIBLE CONNECTORS FOR 3/4” (19.05 mm) OR 1/2” (12.
TYPICAL INSTALLATION GET TO KNOW YOUR WATER HEATER - GAS MODELS A B C D E F G H I Vent Pipe Drafthood Anode Hot Water Outlet Outlet Flexible Water Connections Gas Supply Manual Gas Shut-off Valve Ground Joint Union J K L M N O P Q R Drip Leg (Sediment Trap) Inner Door Outer door Union Inlet Water Shut-off Valve Cold Water Inlet Inlet Dip Tube Temperature-Pressure Relief Valve Rating Plate S T U V W X Y * INSTALL IN ACCORDANCE WITH LOCAL CODES.
INSTALLATION INSTRUCTIONS Removing the Old Water Heater 4. 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. 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, see Figures 2 and 5.
Facts to Consider About the Location • Devices that will turn off the gas supply to a gas water heater while at the same time shutting off its water supply. Carefully choose an indoor location for the new water heater. 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.
FIGURE 9. Minimum clearances between the water heater and combustible construction are 0 inch at the sides and rear, 4 inches (102 mm) at the front, and 6 inches (153 mm) from the vent pipe, see Figure 8. Clearance from the top of the jacket is 8 inches (203 mm) on most models. Note that a lesser dimension may be allowed on some models, refer to the label attached adjacent to the gas control valve on the water heater.
• Do obtain new warning and instruction labels from Sears 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. The confined space shall be provided with two permanent openings, one commencing within 12 inches (30 cm) of the top and one commencing within 12 inches (30 cm) from the bottom of the enclosure.
Water Piping FIGURE 13. • Alternatively a single permanent opening may be used when communicating directly with the outdoors, or with spaces that freely communicate with the outdoors. The opening shall have a minimum free area of 1 square inch per 3,000 BTU per hour (8.3 cm²/kW) of total input rating of all equipment in the enclosure. See Figure 13A. HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water.
This water heater shall not be connected to any heating systems or component(s) used with a non-potable water heating appliance. • Look at the top of the water heater. The cold water inlet is marked “COLD”. Put two or three turns of Teflon tape around the threaded end of the threaded-to-sweat coupling and around both ends of the 3/4” NPT threaded nipple. Using flexible connectors, connect the cold water pipe to the cold water inlet of the water heater.
Fit T & P valve insulation over valve. Make sure that the insulation does not interfere with the lever of the T & P valve. COLD WATER INLET HOT WATER OUTLET Secure all insulation using tape.
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 temperaturepressure 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. ANSI Z21.68 (ANSI Z21.66 & 67, respectively, cover electrically and mechanically actuated vent dampers).
Be sure vent pipe is properly connected to prevent escape of dangerous flue gases which could cause deadly 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. FIGURE 17.
Sediment Traps Water heaters covered in this manual have been tested and approved for installation at elevations up to 2,000 feet (610 m) above sea level. For installation above 2,000 feet (610 m), the water heater’s Btu input should be reduced at the rate of 4 percent for each 1,000 feet (305 m) above sea level which requires replacement of the burner orifice in accordance with the National Fuel Gas Code ANSI Z223.1/NFPA 54. Contact your local gas supplier for further information.
OPERATING INSTRUCTIONS 18
Temperature Regulation NOTE: A water temperature range of 120°F-140°F (49°C-60°C) is recommended by most dishwasher manufacturers. Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30F° (16.7 C°) higher or lower at the point of use such as, bathtubs, showers, sink, etc. The thermostat of this water heater has been factory set at its lowest position.
SERVICE AND ADJUSTMENT Tank (Sediment) Cleaning Burner Inspection Flood damage to a water heater may not be readily visible or immediately detectable. However, over a period of time a flooded water heater will create dangerous conditions which can cause DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. Contact a Sears Service Center to replace a flooded water heater.
Removing the Burner Door Assembly 1. Turn off the gas to the water heater at the manual gas shut-off valve (Figure 3). 2. Turn the gas control knob on the combination gas control valve/thermostat clockwise to the “OFF” position (Figure 1). NOTE: Depress the dial stop on Robertshaw valve before turning the gas control knob. See Lighting Instructions on the water heater. 3. Remove the outer door. 4. Remove the two screws securing the burner door assembly to the combustion chamber. (Figure 24).
Replacing the Thermocouple 1. 2. 3. External Inspection & Cleaning of the Flame Arrestor Remove the Burner Door Assembly as directed previously. Remove the retainer clip from the back of the two piece wire connector and remove the two piece wire connector from the assembly (Figure 27). Pull the thermocouple from the pilot assembly (Figure 31). Although not likely to occur, if debris collects on the flame arrestor, use a vacuum, compressed air, or a soft bristle brush to remove it.
Replacing the Burner Door Assembly GAS CONTROL VALVE THERMOSTAT BURNER DOOR ASSEMBLY FIGURE 30. 1. 9. Check the door gasket for damage or imbedded debris prior to installation. Check for leaks by brushing on an approved noncorrosive leak detection solution. Bubbles will show a leak. Correct any leak found. 10. Replace the outer door. Piezoelectric Igniter System The piezoelectric igniter system consists of the igniter button, electrode, and wire.
Removing and Replacing the Gas Control Valve/Thermostat Housekeeping Vacuum around base of water heater for dust, dirt, and lint on a regular basis. IMPORTANT: The gas control valve/thermostat is a standard valve with a right-hand thread thermocouple. Use only factory authorized replacement parts. Removing the Gas Valve: 1. Turn the gas control knob on the combination gas control valve/thermostat clockwise to the “OFF” position.
Temperature-Pressure Relief Valve Operation 2. CLOSE the cold water inlet valve to the water heater. The temperature-pressure relief valve must be manually operated at least once a year. 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. 5. OPEN the water heater drain valve to allow for tank draining.
TROUBLESHOOTING GUIDE 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. Start Up Conditions Thermal Expansion Water supply system may, because of such events as high line pressure, frequent cut-offs and the effects of water hammer have installed devices such as pressure reducing valves, check valves, back flow preventers, etc.
• a concentration of sulfate in the supply water. • little or no dissolved oxygen in the water. • a sulfate reducing bacteria within the water heater. (This harmless bacteria is non-toxic to humans.) • an excess of active hydrogen in the tank. This is caused by the corrosion protective action of the anode. Smelly water may be eliminated or reduced in some water heater models by replacing the anode(s) with one of less active material, and then chlorinating the water heater tank and all hot water lines.
TROUBLESHOOTING GUIDE PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION BURNER WILL NOT IGNITE 1. 2. 3. 4. 5. 6. 7. 8. 9. Pilot not lit Thermostat set too low No gas Dirt in the gas lines Pilot line clogged Main burner line clogged Non-functioning thermocouple Non-functioning thermostat Heater installed in a confined area 1. 2. 3. 4. 5. 6. 7. 8. 9. Light pilot Turn temp.
TROUBLESHOOTING GUIDE (Continued) PROBLEM DRIP FROM RELIEF VALVE POSSIBLE CAUSE(S) CORRECTIVE ACTION 1. Excessive water pressure 1. 2. Closed water system 2. Use a pressure reducing valve and relief valve See “Thermal Expansion” THERMOSTAT FAILS TO SHUT OFF 1. 2. Non-functioning thermostat Improper calibration 1. 2. Replace thermostat Replace thermostat COMBUSTION ODORS 1. Insufficient air 1. 2. 3. Water heater flue or vent system blocked. Heater installed in a confined area 2. 3.
PILOT LIGHT TROUBLESHOOTING CHART Section A: Pilot light will not light. Is the gas turned on? NO YES Have you bled all the air from the pilot tube and gas supply line? Section B: Pilot light will not remain lit or repeatedly goes out. Check the manual gas shut-off valve to see if it is in the open position, if it is open then contact the gas utility company.
PARTS ORDER LIST POWER MISER™ 9 GAS WATER HEATER 5 Alternate anode location for top T&P MODEL NO’S 153.330960 153.330970 13 40 Gallon 50 Gallon 4 6 Anode location for side T&P 1 2 BURNER ASSEMBLY 8 15 3 10 18 7 19 16 13 9 12 11 Model Numbers Key No.
9 - YEAR LIMITED WARRANTY ON WATER HEATER For nine years from the date of purchase, if this water heater is installed and operated in a single-family home in accordance with the owner’s manual instructions and all local applicable plumbing codes, Sears will: • • Supply free water heater parts for those that are defective in material or workmanship. Supply a free water heater for one that develops a leak.