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Series Twelve PC
INTELLIGENT ELECTRIC
Model Numbers
WATER HEATER
HRE21250PC
HRE21282PC
USER’S GUIDE
FOR POTABLE WATER
HEATING ONLY
GAMA certification applies to all residential
electric water heaters with capacities of 20 to
NOT SUITABLE FOR
120 Gallons. Input rating of 12 Kw or less at a
SPACE HEATING
voltage no greater than 250 V.
Caution:
WARNING
Read and Follow All
READ THE GENERAL SAFETY SECTION BEGINNING ON INSIDE
Safety Rules and
COVER AND THEN THIS ENTIRE MANUAL BEFORE INSTALLING OR
Oper
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Safety Instructions WARNING WARNING Improper installation, adjustment, alteration, service At the time of manufacture this water heater was pro- or maintenance can cause DEATH, SERIOUS BODILY vided with a combination temperature-pressures relief INJURY, OR PROPERTY DAMAGE. Refer to this manu- valve certified by a nationally recognized testing labo- al for assistance consult your local utility or call ratory that maintains periodic inspection of production Maytag Customer Service at 1-800-788-889
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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 bot- tom 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 co
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Table of Contents Safety Instructions ..........................................................................................................................................2, 3 Table of Contents.................................................................................................................................................4 Customer Information ...................................................................................................................................5 P
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Customer Information NEC - National Electrical Code NFPA 70. This publica- Thank You for purchasing a Maytag water heater. tion is available from your local government or public Properly installed and maintained, it should give you years of library or electric company or by writing Underwriters trouble free service. It is strongly suggested that this new Laboratories Inc., 333 Pfingsten Road, Northbrook, IL water heater be professionally installed, call Maytag Customer 60062. Service at 1-800-78
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Accessories and Tools Needed Accessories To simplify the installation Maytag has available the installa- tion parts shown below. You may or may not need all of these accessories depending on your type of installation. Call Maytag Customer Service at 1-800-788-8899 for an autho- rized installer. DRAIN PANS AVAILABLE IN 22″ DIAMETER (PART NUMBER 66001011) FOR WATER HEATERS HAVING A DIAMETER 20″ OR LESS, 24″ DIAMETER (PART NUMBER 66001105) FOR EXPANSION TANKS FOR THERMAL EXPANSION WATER HEATERS HAV
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Installation Instructions Removing the Old Water Heater Turn “OFF” electrical supply to the water heater. a. If you have copper piping to the water heater, the two 1 5 copper water pipes can be cut with a hacksaw approxi- mately four inches away from where they connect to the water heater. This will avoid cutting off the pipes too short. Additional cuts can be made later if neces- sary. Disconnect the temperature-pressure relief valve drain line. When the water heater is drained, discon- nect th
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Instructions for Installation (cont’d) Locating The New Water CAUTION Heater WATER HEATERS EVENTUALLY LEAK: Installation of the water heater must be accomplished in such a manner that if the tank or any connections should You should carefully choose an indoor location for the new leak, the flow of water will not cause damage to the water heater, because the placement is a very important con- structure. For this reason, it is not advisable to install sideration for the safety of the occupants in
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Instructions for Installation (cont’d) The Convertible Lower Element The Upper Element, is a conventional 3800 watt element which only operates at its rated wattage on 240 volts. (See rating plate on 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. Read and follow water heater warnings and instructions. If after reading these instructions in this manual, if you do not understand any portion, call Maytag Custom
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Instructions for Installation (cont’d) Water Piping SHUT-OFF COLD INLET HOT OUTLET TO *WARNING VALVE WATER LINE HOUSE 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 THREADED TO THREADED TO are more likely to be permanently injured by hot SWEAT COUPLING SWEAT COUPLING water than others. These include the
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Instructions for Installation (cont’d) Temperature-Pressure Relief Valve WARNING WARNING At the time of manufacture this water heater was provided The temperature-pressure relief valve must be manu- with a combination temperature-pressures relief valve cer- ally operated at least once a year. Caution should be tified by a nationally recognized testing laboratory that taken to ensure that (1) no one is in front of or maintains periodic inspection of production of listed equip- around the outlet o
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Instructions for Installation (cont’d) Filling the Water Heater To fill the water heater with water: WARNING 1. Close the water heater drain valve by turning the handle to Before making the conversion to 5500 watts, check the right (clockwise). The drain valve is on the lower front the (1) power supply…must be 240 volts, (2) wiring...10 gauge AWG @ Type TW, 60°C or equiva- of the water heater. lent, and (3) Circuit breakers or fusing…capable of 2. Open the cold water supply valve to the water he
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Instructions for Installation (cont’d) Converting the Lower Element (cont’d) 4. Remove the screws from terminal 2 of the element, and 1. Before beginning the conversion turn “OFF” electric move the looped end of the wire aside. power supply to the water heater. 5. The buss bar is labeled 5500 W. Place the buss bar over ter- WARNING minals 2 and 3 with the 5500 W visible. Install the extra HAZARD OF ELECTRICAL SHOCK! Before removing screw provided into terminal 3. any access panels or servicing t
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Instructions for Installation (cont’d) Converting the Lower Element (cont’d) 10. Complete wiring to the water heater, or if completed, 8. Press the insulation pad back in place so that it completely turn “ON” electric power to the water heater after filling covers the thermister and element. the tank with water. CAUTION 9. Replace the access panel. 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
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Instructions for Installation (cont’d) Wiring Diagram TO ELECTRIC POWER SUPPLY STANDARD WIRING FOR 2 WIRE LEAD WATER HEATERS PROGRAMMABLE NON-SIMULTANEOUS OPERATION CONTROL UNIT AC 240 240 VOLT DOUBLE ELEMENT 60 HZ HI-TEMP LIMIT SWITCH 6-WIRE CABLE UPPER THERMISTOR UPPER HEATING ELEMENT 65 43 2 1 TERMINAL CONNECTOR BUSS BAR FOR 5500 WATTS RELAYS & TRANSFORMER BOARD LOWER THERMISTOR FOR 3800 WATTS LOWER HEATING ELEMENT 15 BLUE BLUE ORANGE/WHITE ORANGE GREEN/WHITE GREEN BLUE/WHITE BLUE BLACK B
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Instructions for Installation (cont’d) Wiring C. Flexible metal conduit or 3 metallic tubing shall be per- CAUTION mitted for grounding if all the following conditions are Never use this water heater unless it is completely met: full of water. To prevent damage to the tank and 1. The length in any ground return path does not exceed heating element, the tank must be filled with water. Water must flow from the hot water faucet 6 feet. before turning on power. 2. The circuit conductors contained t
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Instructions for Installation (cont’d) Selecting Thermostat Location 1. The programmable thermostat control module is shipped 6. Probe for any obstruction in the partition. In a clear area drill 1 attached to the front of the water heater, located behind the a ⁄2″ hole through the wall at the selected location. hinged cover panel. 7. Through this hole in the wall, drop a light chain or short chain attached to a strong cord. Snag the cord with a hooked wire from the basement. (In a home with no b
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Instructions for Installation (cont’d) THERMOSTAT REMOVAL (cont’d) 10. Carefully disconnect wiring harness terminal connector 13. Press the end of the thermostat cable back into the insulating from back of thermostat. bushing. No other connections will be made to this end of the cable. BACK OF INSULATING THERMOSTAT BUSHING THERMOSTAT WIRING CABLE HARNESS TERMINAL CONNECTOR 11. Remove the wall plate from the water heater by unscrewing the two mounting screws. The wall plate will be installed at t
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Instructions for Installation (cont’d) 1 16. Find the loop of thermostat wiring cable (grey colored) inside 19. Strip the thermostat cable outer insulation back 1 ⁄4 inches. 1 the junction box and pull it out. Strip the ends ⁄4 inch on each of the six colored wires. .250″ THERMOSTAT WIRING LOOP 1.250″ 20. A second terminal connector is provided in a small bag con- tained within the large plastic manual envelope attached to the side of the water heater. Loosen each screw in the termi- nal connect
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Instructions for Installation (cont’d) Selecting Thermostat Location (cont’d) 22. Guide the end of the remote thermostat cable through the 25. Carefully press the terminal connector and connected wires hole where the black plug was removed in the left junction down into the water heater junction box. box cover. 26. A strain-relief bushing is also provided in the small bag that contained the terminal connector. Open the bushing and REMOTE THERMOSTAT place it around the remote thermostat cable exi
