Series Nine ELECTRIC WATER HEATER USER'S GUIDE Model Numbers HRE2930T HRE3930T HRE2940L HRE3940L HRE2940S HRE3940S HRE2940T HRE3940T HRE2950S HRE3950S HRE2950T HRE3950T HRE2966T HRE3966T FOR POTABLE WATER HEATING ONLY GAMA certification applies to all residential electric water heaters with capacities of 20 to 120 Gallons. Input rating of 12 Kw or less at a voltage no greater than 250 V. NOT SUITABLE FOR SPACE HEATING Caution: Read and Follow All Safety Rules and Operating Instructions Before First Use of This Product. Part No. 66001711 184741-000 WARNING READ THE GENERAL SAFETY SECTION BEGINNING ON INSIDE COVER AND THEN THIS ENTIRE MANUAL BEFORE INSTALLING OR OPERATING THIS WATER HEATER. Save this Manual for Future Reference. Printed in the U.S.A. 0104 Safety Instructions WARNING Improper installation, adjustment, alteration, service or maintenance can cause DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. Refer to this manual for assistance consult your local utility or call Maytag Customer Service at 1-800-788-8899 for an authorized servicer for further information. WARNING At the time of manufacture this water heater was provided with a combination temperature-pressures relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, and the current edition of ANSI Z21.22 · CSA 4.4 and the code requirements of ASME. If replaced, the valve must meet the requirements of local codes, but not less than a combination temperature and pressure relief valve certified as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22 · CSA 4.4 by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials. The valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater (150 lbs./sq. in.) and a discharge capacity not less than the water heater input rate as shown on the model rating plate. (Electric heaters watts divided by 1000 x 3412 equal BTU/Hr. rate.) Your local jurisdictional authority, while mandating the use of a temperature-pressure relief valve complying with ANSI Z21.22 · CSA 4.4 and ASME, may require a valve model different from the one furnished with the water heater. Compliance with such local requirements must be satisfied by the installer or end user of the water heater with a locally 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 it's designated opening or plugged. The temperature-pressure relief valve must be installed directly into the fitting of the water heater designated for the relief valve. Position the valve downward and provide tubing so that any discharge will exit only within 6 inches 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, 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 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: · Must not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions. · Must not be plugged or blocked. · Must be of material listed for hot water distribution. · Must be installed so as to allow complete drainage of both the temperature-pressure relief valve, and the discharge pipe. · Must terminate at an adequate drain. · Must not have any valve between the relief valve and tank. 2 WARNING 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. WARNING 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, 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 at plumbing supply or hardware stores. Follow manufacturers instructions for installation of the valves. Before changing the factory setting on the thermostat, read the "Temperature Regulation" section in this manual. WARNING INSULATING JACKETS: When installing an external water heater insulation jacket on an electric water heater: · DO NOT cover the temperature-pressure relief valve. · DO NOT put insulation over the access covers or any access areas. · DO NOT remove operating instructions, and safety related warning labels and materials affixed to the water heater. · DO obtain new warning and instruction labels from Maytag for placement on the jacket directly over the existing labels. WARNING Do not use this appliance if any part of it has been under water. An electrical short or malfunction could occur. The water heater should be replaced. Safety Instructions (cont'd) WARNING 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. WARNING 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. CAUTION WATER HEATERS EVENTUALLY LEAK: Installation of the water heater must be accomplished in such a manner that if the tank or any connections should leak, the flow of water will not cause damage to the structure. For this reason, it is not advisable to install the water heater in an attic or upper floor. When such locations cannot be avoided, a suitable drain pan should be installed under the water heater. Drain pans are available at your local hardware store. Such a drain pan must have a minimum diameter of at least 13/4 inches greater than the water heater diameter and must be piped to an adequate drain. CAUTION 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. 3 Table of Contents Safety Instructions .....................................................................................................................................2,3 Table of Contents...........................................................................................................................................4 Customer Information............................................................................................................................5 Product Specifications.............................................................................................................................6 Accessories and Tools Needed ....................................................................................................7 Accessories ............................................................................................................................................................................7 Tools .....................................................................................................................................................................................7 Instructions for Installation........................................................................................................8-17 Removing the Old Water Heater..........................................................................................................................................8 Locating the New Water Heater ..........................................................................................................................................9 Typical Installation................................................................................................................................................................9 The Convertible Lower Element ........................................................................................................................................10 Water Piping.......................................................................................................................................................................11 T&P Valve and Pipe Insulation .......................................................................................................................................11 Temperature-Pressure Relief Valve .....................................................................................................................................12 Filling the Water Heater.....................................................................................................................................................13 Converting the Lower Element.....................................................................................................................................13-15 Wiring Diagrams ................................................................................................................................................................16 Wiring ................................................................................................................................................................................17 Installation Checklist ..........................................................................................................................................................18 Service and Maintenance ............................................................................................................19-24 Temperature Regulation......................................................................................................................................................19 Thermostats ........................................................................................................................................................................19 Thermostat Settings............................................................................................................................................................19 Thermostat Adjustment......................................................................................................................................................20 Anode Rod Inspection ........................................................................................................................................................20 Temperature-Pressure Relief Valve Operation ....................................................................................................................20 Draining.............................. ...