Maytag HRX30DERT, HRX52DERS, HRX82DERT, HRX52DERT, HRX40DERT User Manual

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Series Ten

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.

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.

Model Numbers

HRX30DERT

HRX40DERS

HRX40DERT

HRX52DERS

HRX52DERT

HRX66DERT

HRX82DERT

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.

Printed in the U.S.A. 0104

Part No. 184742-000

 

66001712

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 a Maytag Service Specialist at 1-800-365-0024 for an authorized servicer for further information.

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 blanket 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.

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. p.s.i.) 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 6air 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

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 134 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.......................................................................................................

8-14

Removing the Old Water Heater.........................................................................................................................................

8

Locating the New Water Heater .........................................................................................................................................

9

Typical Installation...............................................................................................................................................................

9

Water Piping......................................................................................................................................................................

10

T&P Valve and Pipe Insulation ......................................................................................................................................

10

Temperature-Pressure Relief Valve ....................................................................................................................................

11

Filling the Water Heater....................................................................................................................................................

12

Wiring Diagrams ...............................................................................................................................................................

12

Wiring ...............................................................................................................................................................................

13

Installation Checklist .........................................................................................................................................................

14

Service and Maintenance ...........................................................................................................

15-20

Temperature Regulation.....................................................................................................................................................

15

Thermostats .......................................................................................................................................................................

15

Temperature Settings .........................................................................................................................................................

15

Thermostat Adjustments ...................................................................................................................................................

16

Anode Rod Inspection .......................................................................................................................................................

16

Temperature-Pressure Relief Valve Operation ...................................................................................................................

16

Draining.............................................................................................................................................................................

17

Thermostat Removal/Replacement...............................................................................................................................

17,18

Element Cleaning and Replacement ............................................................................................................................

18-20

Drain Valve Washer Replacement .....................................................................................................................................

20

Anode Rod Inspection .......................................................................................................................................................

20

Service......................................................................................................................................................................................

20

Troubleshooting .....................................................................................................................................

21-23

Start Up Conditions...........................................................................................................................................................

21

Thermal Expansion.......................................................................................................................................................

21

Strange Sounds..............................................................................................................................................................

21

Operational Conditions .....................................................................................................................................................

21

Smelly Water.................................................................................................................................................................

21

Air in Hot Water Faucets..............................................................................................................................................

21

Rumbling Noise ............................................................................................................................................................

21

High Temperature Shut Off System ........................................................................................................................

21,22

Not Enough Hot Water ................................................................................................................................................

22

Water is Too Hot ..........................................................................................................................................................

22

Leakage Checkpoints ....................................................................................................................................................

23

Repair Parts List......................................................................................................................................

24-28

Warranty...................................................................................................................................................................

32

4

Customer Information

Thank You for purchasing a Maytag water heater. Properly installed and maintained, it should give you years of trouble free service. It is strongly suggested that this new water heater be professionally installed, call a Maytag Service Specialist at 1-800-365-0024 for recommended installers.

Abbreviations Found In This Instruction Manual

U.L. - Underwriters Laboratories Inc.

NEC - National Electrical Code

ANSI - American National Standards Institute

Read the “Safety Instructions” section, pages 2 and 3 of this manual first and then the entire manual carefully. If you don’t follow the safety rules, the water heater will not operate properly. It could cause DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE.

This manual contains instructions for the installation, operation, and maintenance of this electric water heater. It also contains warnings throughout the manual that you must read and be aware of. All warnings and all instructions are essential to the proper operation of the water heater and your safety. Since we cannot put everything on the first few pages, READ THIS ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER.

The installation must conform with the instructions 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 publication 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 understand any portion of the instructions, call a Maytag Service Specialist at 1-800-365-0024 for an authorized servicer.

Carefully plan the place where you are going to put the water heater. Correct electrical wiring and connections are very important in preventing death from possible electrical shock and fires.

Examine the location to ensure the water heater complies with the “Locating the New Water Heater” section.

For California installation this water heater must be braced, anchored, or strapped to avoid falling or moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained from the California office of the State Architect, 400 P Street, Sacramento, CA 95814.

Massachusetts Code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00.

5

Product Specifications

Model

 

HRX30DERT

HRX40DERS

HRX40DERT

HRX52DERS

 

 

 

 

 

 

Tank Capacity

 

 

 

 

In Gallons

 

30

40

40

50

*Element

Upper

5500

5500

5500

5500

Wattage

 

 

 

 

 

 

 

 

 

 

at 240 Volt

Lower

5500

5500

5500

5500

 

 

 

 

 

 

Recovery Rate

Upper

25

25

25

25

In Gals Per Hr.

 

 

 

 

 

 

 

 

 

 

@ 90°F Rise

Lower

25

25

25

25

 

 

 

 

 

 

Diameter

 

19

2112

19

23

Height

 

47

46

60

49

Maximum Fuse or

 

 

 

 

Circuit Breaker Size

30

30

30

30

**Minimum

 

 

 

 

 

Wire Size (Gauge)

10

10

10

10

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

HRX52DERT

HRX66DERT

HRX82DERT

 

 

 

 

 

 

Tank Capacity

 

 

 

 

In Gallons

 

50

66

80

 

*Element

Upper

5500

5500

5500

 

Wattage

 

 

 

 

 

 

 

 

 

 

at 240 Volt

Lower

5500

5500

5500

 

 

 

 

 

 

 

Recovery Rate

Upper

25

25

25

 

In Gals Per Hr.

 

 

 

 

 

 

 

 

 

 

@ 90°F Rise

Lower

25

25

25

 

 

 

 

 

 

 

Diameter

 

2112

23

25

 

Height

 

61

61

6112

 

Maximum Fuse or

 

 

 

 

Circuit Breaker Size

30

30

30

 

**Minimum

 

 

 

 

 

Wire Size (Gauge)

10

10

10

 

 

 

 

 

 

 

*Standard element wattages are shown. Other element wattages (up to the maximum shown) are available when specified.

**Wiring size based on standard 60°C copper wire. If distance from fuse box to water heater is more than 90 feet, refer to your local electrical code.

6

Accessories and Tools Needed

Accessories

To simplify the installation Maytag has available the installation parts shown below. You may or may not need all of these accessories depending on your type of installation. Call a Maytag Service Specialist at 1-800-365-0024 for an authorized installer.

EXPANSION TANKS FOR THERMAL EXPANSION CONDITIONS AVAILABLE IN 2 GALLON (PART NUMBER ETC2X) AND 5 GALLON (PART NUMBER ETC5X) CAPACITY

DRAIN PANS AVAILABLE IN 22DIAMETER (PART

NUMBER 9001609) FOR WATER HEATERS HAVING A DIAMETER 20OR LESS, 24DIAMETER (PART

NUMBER 9002769) FOR WATER HEATERS HAVING A DIAMETER 22OR LESS AND AVAILABLE IN 28

DIAMETER (PART NUMBER 9001608) FOR WATER HEATERS HAVING A DIAMETER 26.25OR LESS

Tools

You may or may not need all of these tools, depending on your type of installation. These tools can be purchased at your local Maytag store.

Pipe Wrenches (2) 14

Screwdriver

6 Foot Tape or Folding Rule

Garden Hose

Drill

Pipe dope or Teflon Tape

6 FOOT TAPE

GARDEN HOSE

SLOT-HEAD SCREW DRIVER

PIPE

WRENCH

PHILLIPS SCREWDRIVER

PIPE DOPE

 

(SQUEEZE TUBE)

 

ROLL OF TEFLON TAPE

DRILL

(Use only on water connec-

 

tions)

7

 

ADDITIONAL TOOLS NEEDED

WHEN SWEAT SOLDERING

Tubing Cutters or Hacksaw

Propane Torch

Soft Solder

Solder Flux

Emery Cloth

Wire Brushes

HACKSAW

3/4WIRE BRUSH

1/2WIRE BRUSH

PROPANE TORCH

ROLL OF LEAD FREE

SOFT SOLDER

ROLL OF EMERY

SOLDER FLUX

TUBING CUTTER

CLOTH

 

 

Instructions for Installation

Removing the Old Water Heater

1

2Turn “OFF” the water supply to the water heater at the water shutoff valve or water meter.

1

3Attach 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.

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.

4Check again to make sure the electrical supply is turned “OFF” to the water heater. Then disconnect the electrical supply connection from the water heater junction box.

5a. If you have copper piping to the water heater, the two copper water pipes can be cut with a hacksaw approximately 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 necessary. Disconnect the temperature-pressure relief valve drain line. When the water heater is drained, disconnect the hose from the drain valve. Close the drain valve. The water heater is now completely disconnected and ready to be removed.

2

5

4

5b. 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 remaining 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 discharge pipe. When the water heater is drained, disconnect the hose from the drain valve. Close the drain valve. The water heater is now completely disconnected and ready to be removed.

3

CAUTION

Mineral buildup or sediment may have accumulated in the old water heater. This causes the water heater to be much heavier than normal and this residue, if spilled out, could cause staining.

8

Maytag HRX30DERT, HRX52DERS, HRX82DERT, HRX52DERT, HRX40DERT User Manual

Instructions for Installation (cont’d)

Locating The New Water

Heater

You should carefully choose an indoor location for the new water heater, because 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 intended for outdoor installation.

Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed.

1.The location selected should be indoors as close to and as centralized with the water piping system as possible. This water heater, as well as all water heaters, will eventually leak. Do not install without adequate drainage provisions where water flow will cause damage.

Typical Installation

CHECK ALL CONNECTIONS FOR LEAKS.

CONSULT THE LOCAL UTILITY COMPANY TO EXAMINE INSTALLATION FOR PROPRIETY AND SAFETY.

*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.

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 134 inches greater than the water heater diameter and must be piped to an adequate drain.

CAUTION

INSTALLATION IN RESIDENTIAL GARAGES: The water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle.

2.The location selection must provide adequate clearances for servicing and proper operation of the water heater.

UNION

TEMPERED

WATER

OUTLET

VACUUM RELIEF REQUIRED BY SOME CODES (REFER TO LOCAL CODES)

 

SHUTOFF VALVE

HOT WATER

 

 

 

 

COLD WATER INLET

OUTLET

ELBOW

 

 

 

 

 

 

 

 

 

 

 

UNION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/4THREADED

 

 

 

 

 

CONNECTORS

 

 

 

 

 

 

 

 

 

*MIXING VALVE

 

 

 

 

ELECTRICAL

 

 

 

 

JUNCTION BOX

 

 

 

 

 

 

 

 

TEMPERATURE-

 

 

 

 

 

 

 

 

 

 

 

PRESSURE

 

ACCESS COVER

 

 

RELIEF VALVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCHARGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIPE

 

 

 

 

 

 

 

 

(Do not cap or

 

 

 

 

 

 

 

 

plug)

 

 

ACCESS COVER

 

 

 

 

 

 

 

 

DRAIN VALVE

 

6AIR GAP

 

 

 

 

TO SUITABLE DRAIN

9

Instructions for Installation (cont’d)

Water Piping

*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.

*See illustration on page 9 for mixing valve usage.

If a water heater is installed in a closed water supply system; such as one having a back-flow preventer, check valve, water meter with a check valve, etc. in the cold water supply; means shall be provided to control thermal expansion. Contact the local utility or call a Maytag Service Specialist at 1-800-365-0024 for an authorized servicer on how to control this situation.

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.

NOTE: The secondary anode rod/hot outlet nipple and the cold inlet nipple are packaged separately with the water heater. The above parts must be installed in the appropriate HOT and COLD water connection locations.

The illustration shows the attachment of the water piping to the water heater. The water heater is equipped with 34 inch water connections.

NOTE: If using copper tubing, solder tubing to an adapter before attaching the adaptor 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.

1.Look at the top cover of the water heater. The water outlet is marked hot. Connect the hot water pipe to the hot water outlet of the water heater.

2.Look at the top cover of the water heater. The cold water inlet is marked cold. Connect the cold water pipe to the cold water inlet of the water heater.

NOTE: Your water 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.

HOT OUTLET TO

SHUT-OFF

COLD INLET

 

HOUSE

VALVE

WATER LINE

 

 

 

 

 

 

 

THREADED TO

 

 

 

 

 

THREADED TO

SWEAT COUPLING

 

 

 

 

SWEAT COUPLING

3/4THREADED

 

 

 

 

 

3/4THREADED

 

 

 

 

 

NIPPLE

 

HOT

COLD

 

 

 

NIPPLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEMPERATURE-

 

 

 

 

 

 

 

PRESSURE RELIEF

 

 

 

 

 

 

 

 

VALVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCHARGE PIPE

 

 

 

 

 

 

 

 

 

 

 

 

 

(Do not cap or plug)

6AIR GAP

FLOOR DRAIN

T&P Valve and Pipe Insulation

Remove insulation for T&P Valve and pipe connections from carton.

Fit pipe insulation over the incoming cold water line and the hot water line. Make sure that the insulation is against the top cover of the heater.

Fit T&P Valve insulation over valve. Make sure that the insulation does not interfere with the lever of the T&P valve.

Secure all insulation using tape.

10

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