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FOR POTABLE WATER
HEATING ONLY

NOT SUITABLE FOR
SPACE HEATING

Caution:
Read and Follow All
Safety Rules and
Operating Instructions
Before First Use of
This Product.

Save this Manual for Future Reference.

WARNING

READ THE GENERAL SAFETY SECTION BEGINNING ON INSIDE
COVER AND THEN THIS ENTIRE MANUAL BEFORE INSTALLING OR
OPERATING THIS WATER HEATER.

Model Numbers

HRE21250PC
HRE21282PC

Series Twelve PC

INTELLIGENT ELECTRIC

WATER HEATER

USER’S GUIDE

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.

Printed in the U.S.A. 0104

Part No. 66001714

184744-000

Содержание HRE21250PC

Страница 1: ...SECTION BEGINNING ON INSIDE COVER AND THEN THIS ENTIRE MANUAL BEFORE INSTALLING OR OPERATING THIS WATER HEATER Model Numbers HRE21250PC HRE21282PC Series Twelve PC INTELLIGENT ELECTRIC WATER HEATER USER S GUIDE 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 Printed in the U S...

Страница 2: ...ties should circumstances demand If the dis charge 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 ...

Страница 3: ...orrect 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 Safety Instructions cont d 3 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 explo sive To p...

Страница 4: ...stat Wiring at Water Heater 18 20 Remote Thermostat Installation and Wiring 20 21 Installation Checklist 22 Instructions for Operation 23 26 Temperature Regulation 23 Temperature Conditions 23 Programming the Thermostat 23 26 Service and Maintenance 27 31 Temperature Pressure Relief Valve Operation 27 Draining 27 Anode Rod Inspection 28 Element Cleaning and Replacement 28 30 Drain Valve Washer Rep...

Страница 5: ...ns in this manual electric company rules and Local Codes or in the absence of Local Codes with the current edition of the NEC National Electrical Code NFPA 70 This publica tion is available from your local government or public library or electric company or by writing Underwriters Laboratories Inc 333 Pfingsten Road Northbrook IL 60062 If after reading this manual you have any questions or do not ...

Страница 6: ...PE Use only on water connec tions GARDEN HOSE 6 FOOT TAPE PIPE DOPE SQUEEZE TUBE DRILL PIPE WRENCH ROLL OF LEAD FREE SOFT SOLDER ROLL OF EMERY CLOTH SOLDER FLUX TUBING CUTTER PROPANE TORCH ADDITIONAL TOOLS NEEDED WHEN SWEAT SOLDERING Tubing Cutters or Hacksaw Propane Torch Soft Solder Solder Flux Emery Cloth Wire Brushes Pipe Wrenches 2 14 Screwdriver 6 Foot Tape or Folding Rule Garden Hose Drill ...

Страница 7: ...y disconnect ed and ready to be removed b If you have galvanized pipe to the water heater loosen the two galvanized pipes with a pipe wrench at the union in each line Also disconnect the piping remain ing to the water heater These pieces should be saved since they may be needed when reconnecting the new water heater Disconnect the temperature pressure relief valve drain line When the water heater ...

Страница 8: ...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 pre cautions 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 valv...

Страница 9: ...r 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 Customer Service at 1 800 788 8899 for an authorized servicer WARNING Before making the conversion to 5500 watts check the 1 power supply must be 240 volts 2 wiri...

Страница 10: ... heater is super insulated to minimize heat loss from the tank Further reduction in heat loss can be accomplished by insulating the hot water lines from the water heater 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 cont...

Страница 11: ...N h V e 2 3L e 0 V W hf e 0MfV h W2 7 hf he hf g h h he J he h h V4 he 75 I 5 he Y H 3 N L 1 L 1 f f L he f 31 he V h J5 h 7H L g 31 gJ N Lg75 e31g Y eV X 31hf N hf hf L 3L he 31 X N1 he N L 31 he X g f W2 f31 N he g X f 0YfV e g T Y eJ g 3 H Le7 V X fW26X e 1e N f7 1 eW f g J e3 e Y f e7 f g eN e f hf 3 N hf W2 6X W X 7 1 L X X O2 1 W2 MfI L O H f N X O2 6K W2 h 1 W2 6X W h L 7 Xhf W h 3 1 J X he...

Страница 12: ...eating element the tank must be filled with water Water must flow from the hot water faucet before turning ON power WARNING 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 equiva lent and 3 Circuit breakers or fusing capable of 30 amp loading Also the installation must conform with this manual local codes and electric util...

Страница 13: ...side 5 The buss bar is labeled 5500 W Place the buss bar over ter minals 2 and 3 with the 5500 W visible Install the extra screw provided into terminal 3 6 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 5500 W Converting the Lower Element cont d 1 Before b...

Страница 14: ...iring to the water heater or if completed turn ON electric power to the water heater after filling the tank with water Converting the Lower Element cont d 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 ...

Страница 15: ... UNIT Wiring Diagram STANDARD WIRING FOR 2 WIRE LEAD WATER HEATERS NON SIMULTANEOUS OPERATION 240 VOLT DOUBLE ELEMENT BLACK RED UPPER THERMISTOR LOWER THERMISTOR YELLOW BLACK RELAYS TRANSFORMER BOARD BLUE FOR 3800 WATTS BLACK BLUE 6 WIRE CABLE ORANGE ORANGE WHITE GREEN WHITE GREEN BLUE WHITE BLUE 6 5 4 3 2 1 AC 240 60 HZ 6 WIRE CABLE TERMINAL CONNECTOR HI TEMP LIMIT SWITCH ...

Страница 16: ...on top of the water heater Connect red to red black to black and the ground wire to the green ground screw in the junction box of the water heater 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 g...

Страница 17: ...l a 1 2 hole through ceiling above the partition 6 Probe for any obstruction in the partition In a clear area drill a 1 2 hole through the wall at the selected location 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 basement drop the cord from ceiling and snag it at the thermostat hole...

Страница 18: ...ted remote location in Step 31 13 Press the end of the thermostat cable back into the insulating bushing No other connections will be made to this end of the cable 14 Close and latch outer door REMOTE THERMOSTAT WIRING AT WATER HEATER 15 Remove mounting screw and right junction box cover Also lift up and remove black plug on left junction box cover Discard plug BACK OF THERMOSTAT TERMINAL CONNECTO...

Страница 19: ...side of the loop which does not have the red tape strip on it should be cut off or pressed into the junction box out of the way 16 Find the loop of thermostat wiring cable grey colored inside the junction box and pull it out Instructions for Installation cont d 21 Locate the end of the remote thermostat cable routed to the water heater in Step 8 ORANGE WHITE ORANGE GREEN WHITE GREEN BLUE WHITE BLU...

Страница 20: ...the terminal connector Open the bushing and place it around the remote thermostat cable exiting the junc tion box Press the bushing into the hole in the left junction box cover 27 Replace the right junction box cover using the screw provid ed This completes the remote thermostat wiring at the water heater REMOTE THERMOSTAT INSTALLATION AND WIRING 28 Locate the 6 inches of remote thermostat cable p...

Страница 21: ...t d 29 Fasten wall plate loosely to the wall in position shown using the three screws provided in the plastic bag Wall anchors are recommended for drywall installation Place a level on top of the wall plate adjust until level and then tighten screws to secure wall plate 30 Strip the remote thermostat cable outer insulation back 11 4 inches Strip the ends 1 4 inch on each of the six colored wires W...

Страница 22: ...sec tion 4 Is the new temperature pressure relief valve properly installed and piped to an adequate drain See Temperature Pressure Relief Valve in the Instructions for Installation section 5 Is the water heater completely filled with water See Filling the Water Heater instructions in the Instructions for Installation section 6 Will a water leak damage anything See Locating the New Water Heater in ...

Страница 23: ...ogrammable control has three basic modes of operation 1 Manual mode a set and forget operation 2 Vacation mode for those occasions when the residence is unoccupied and there is no need for hot water 3 Programmable mode can be programmed for up to 24 hour a day 7 days a week with 4 set periods a day Override is an optional setting that allows for temperature adjustments during a given time period T...

Страница 24: ... program is Monday Day the method of setting the time and temperature are the same for all four selected periods of the day The second period designated Day can be set to a reduced temperature 70 F or lower due to the lack of need for hot water assuming no one is at home during the day If everyone leaves at 9 30 AM this time can be entered into the program and the heating elements would not activa...

Страница 25: ...er 0000 and a large number 1 should appear in the bottom right hand corner This indicates the optional menu is on the type of time setting The first optional mode 1 setting involves the type of time that will appear on the clock display The default setting is the normal twelve hour clock For military time depress either or of the TIME button until the description 0001 appears in the upper left han...

Страница 26: ...represents an indus try warning that water temperatures above 120 F represent a scald hazard when skin surface is exposed for a small amount of time This is a warning and can not be removed from the screen display PWR POWER BUTTON is a button at the right hand bottom of the panel which will activate or deactivate the display panel It will not turn off the power to the water heater and will not kil...

Страница 27: ...led with water Water must flow from the hot water faucet before turning ON power 27 Service and Maintenance Temperature Pressure Relief Valve Operation The temperature pressure relief valve must be manually oper ated at least once a year TEMPERATURE PRESSURE RELIEF VALVE DISCHARGE PIPE Failure to install and maintain a new properly listed tempera ture pressure relief valve will release the manufac...

Страница 28: ...nd speed draining 4 Remove the two screws securing the access panel and remove panel WARNING 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 5 Remove the insulation pad to expose the opening Anode Rod Inspection The anode rod is used to protect the tank from corrosion M...

Страница 29: ... same volt age and 2 no greater wattage than listed on the model rating plate affixed to the water heater 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 14 Check element for water leaks If leakage occurs tighten element or...

Страница 30: ...the tank 16 Upper High Limit Only Replace terminal cover on high limit making sure that the locking tabs on the ter minal cover are in place 17 Press the insulation pad back in place so that it complete ly covers the thermistor upper high limit and element 18 Replace access panel 19 Turn ON electric power to water heater Element Cleaning Replacement cont d ...

Страница 31: ... Follow Filling the Water Heater instructions in the Instructions for Installation section 7 Check for leaks 8 Turn ON electric power to the water heater Service Before calling for repair service read the Start Up Conditions and Operational Conditions found in the Troubleshooting section of this manual If a condition persists or you are uncertain about the opera tion of the water heater let a qual...

Страница 32: ... behind the access panel Troubleshooting 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 explo sive 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 elec...

Страница 33: ...Is the programmable thermostat set to the desired tem perature See Temperature Regulation section 7 If you had experienced very hot water and now no hot water the problem may be due to the high temperature shut off system See High Temperature Shut Off System in the Troubleshooting section 8 During very cold weather the incoming water will also be colder and it will require a longer time to become ...

Страница 34: ...ut an increase in upper water temperature The thermostat turns off the upper ele ment and tries for 30 minutes to raise the temperature of the upper sensor using the lower element If the upper tem perature sensor rises using the lower element the upper ele ment will again be tried After 30 minutes if the upper ele ment does not raise the upper water temperature on the second attempt then an upper ...

Страница 35: ...e sure the electrical supply to the water heater is turned OFF Failure to do this could result in DEATH SERIOUS BODI LY INJURY OR PROPERTY DAMAGE B Turn electrical power OFF remove access panels and insulation pad If leaking around elements fol low proper draining instructions and remove ele ment Reposition or replace gasket on element Place element into opening and tighten securely Then fol low F...

Страница 36: ...36 Notes ...

Страница 37: ...66001061 9002408 66001068 9001453 66001105 9002769 66001106 9000225 66001107 9000396 66001353 9003034 66001354 9003035 66001355 9003036 66001356 9003037 66001357 9003038 66001358 9003039 66001701 9003929 66001702 9003919 66001703 9003900 66001708 9003717 66001709 9003716 66001714 184744 000 66001727 9003928 66001739 9003935 66001745 9003936 66001746 9003932 66001747 9004001 Repair Parts List MAYTA...

Страница 38: ... water heaters are equipped with factory installed convertible elements which can be operated at 3800 watts or 5500 watts Convertible elements are not offered as replacement parts If a replacement 3800 watt 240 volt element is needed order part no 66001106 replacement element If at the time of installation the water heater was converted to operate at 5500 watts order part number 66001107 replaceme...

Страница 39: ... 66001021 9 T P Insulation 66001709 66001709 10 Element Gasket 66001053 66001053 11 Lower Element SEE NOTE ON PAGE 38 12 Buss Bar Kit 66001055 66001055 13 Lower Temperature Sensor 66001358 66001358 14 Lower Access Panel 66001703 66001703 15 Transformer Relay Panel 66001356 66001356 16 Transformer Relay Board 66001354 66001354 17 Panel 66001061 66001061 18 Upper Access Panel 66001703 66001703 19 Te...

Страница 40: ...e if a leak occurs in the Tank a new water heater of the closest capacity and quality then available will be replaced free of charge for the water heater with the owner paying all other costs including labor mileage and transportation If the water heater is subjected to commercial institutional industrial or non residential use the above warranty cov erage for tanks that are proven to be defective...

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