Kenmore 33205 Owners Manual - Page 13

WATER PIPING Toxic chemicals, such as those used for boiler treatment shall not be introduced into this system. e7:q [e]:1:| Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death. Children, the elderly, and the physically or mentally disabled are at highest risk for scald injury. Feel water before bathing or showering. Temperature available. limiting valves are Read instruction manual for safe temperature setting. HOTTER 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, cleaning 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, a means such as a *mixing valve, should be used at the hot water taps used by these people or at the water heater, see Figure 15. Valves for reducing point of use temperature by mixing cold and hot water are also available: When the system requires water at temperatures higher than required for domestic water purposes, a tempering valve must be installed. Please refer to Figure 15 for suggested piping arrangement. 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. NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe. HOTWATER _, OUTLET ,,L COLD WATER -- INLET TEMPERED _ "_"- WATER OUTL_ "L_'-'__.L \_ *MIXING VALVE _ _ '['-J _ _ /' __ L.. FROM HOT WATER OUTLET ON WATER HEATER _ TO COLD WATER ' INLET ON WA'flER HEATER Property Damage Hazard • Avoid water heater damage. • Install thermal expansion tank if necessary. • Do not apply heat to cold water inlet. • Contact qualified installer or Sears Service Center. FIGURE 15. Consult Sears Service Center. Follow manufacturer's instructions for installation of the valves. Before changing the factory setting on the thermostat, read the "Temperature Regulation" section in this manual. Figure 16 shows 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 cold water inlet connection. Do not solder the cold water supply line directly to the cold water inlet. It will harm the dip tube and damage the tank. Toxic Chemical Hazard • Do not connect to non-potable water system. Look at the top cover of the water heater. The water outlet is marked "HOT". 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 hot water pipe to the hot water outlet on the water heater. This water heater shall not be connected to any heating system or component or used as a non-potable water heating appliance. All piping components connected to this unit shall be suitable for use with potable water. 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. 13