Rheem ELDS52-TB Commercial Electric Water Heater Use and Care Manual

Use & Care Manual

With Installation Instructions for the Installer

Commercial Electric

Water Heaters

Electric Water Heaters

18G0

The purpose of this manual is twofold: one, to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater; and two, for the owner–operator, to explain the features, operation, safety precautions, maintenance and troubleshooting of the water heater. This manual also includes a parts list.

It is imperative that all persons who are expected to install, operate or adjust this water heater read the instructions carefully so they may understand how to perform these operations. If you do not understand these instructions or any terms within it, seek professional advice.

Any questions regarding the operation, maintenance, service or warranty of this water heater should be directed to the seller from whom it was purchased. If additional information is required, refer to the section on

“If you need service.”

Do not destroy this manual. Please read carefully and keep in a safe place for future reference.

!

Recognize this symbol as an indication of Important Safety

Information!

!

California Proposition 65 Warning:

This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

NOTICE: This water heater is designed for use in a commercial application and the installation and maintenance of it should be performed by qualified, licensed service personnel.

AP23007 Rev 01

2

Safety Information

Safety Precautions . . . . . . . 3, 4

Installation Instructions

Location . . . . . . . . . . . . . . . . . 5

Water Connections . . . . . . 6-7

Electrical Connections. . . 8-14

Insulation . . . . . . . . . . . . 15-16

Installation Checklist . . . . . . 17

Operating Instructions

Safety Controls . . . . . . . . . . 18

Water Temperature . . . . . . . .19

Care and Cleaning

Draining . . . . . . . . . . . . . . . . 20

Maintenance . . . . . . . . . . . . . 20

Extended Shut-Down . . . . . 21

Troubleshooting Tips

Parts List . . . . . . . . . . . . . . . . 22

Before You Call

For Service . . . . . . . . . . . . . . 23

Cavity Insert Instructions . . 24

Customer Service

If You Need

Service . . . . . . . . . . . . . . . . . 28

FOR YOUR RECORDS

Write the model and serial numbers here:

#

#

You can find them on a label on the appliance.

Staple sales slip or cancelled check here.

Proof of the original purchase date is needed to obtain service under the warranty.

READ THIS MANUAL

Inside you will find many helpful hints on how to use and maintain your water heater properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your water heater.

You’ll find many answers to common problems in the Before

You Call For Service section. If you review our chart of

Troubleshooting Tips first, you may not need to call for service at all.

READ THE SAFETY INFORMATION

Your safety and the safety of others are very important. There are many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

!

This is the safety alert symbol. Recognize this symbol as an indication of Important Safety Information!

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER”, “WARNING”, “CAUTION” or

“NOTICE”.

These words mean:

!

DANGER

An imminently hazardous situation that will result in death or serious

injury.

!

!

WARNING

A potentially hazardous situation that could result in death or serious injury and/or damage to property.

CAUTION

A potentially hazardous situation that may result in minor or moderate

injury.

NOTICE:

Attention is called to observe a specified procedure or maintain

a

DANGER!

WATER TEMPERATURE SETTING

!

temperature setting of water heater’s thermostat. Water temperatures above 125°F can cause severe burns or death from scalding. To meet commercial water use needs, this water heater is capable of supplying outlet water temperatures at 170°F (77°C) or higher. Be sure located on the water heater near the thermostat access panel.

D A N G E R

HOT

BURN

Maximum water temperatures occur just after the thermostat has shut off the elements. To find the hot water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream and read the thermometer.

The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications.

Time/Temperature Relationship in Scalds

Temperature Time To Produce a Serious Burn

120°F (49°C)

125°F (52°C)

130°F (54°C)

135°F (57°C)

140°F (60°C)

145°F (63°C)

150°F (66°C)

155°F (68°C)

Table courtesy of Shriners Burn Institute

More than 5 minutes

1½ to 2 minutes

About 30 seconds

About 10 seconds

Less than 5 seconds

Less than 3 seconds

About 1½ seconds

About 1 second

Water temperature over 125 ° F can cause severe burns instantly or death from scalds.

Children, disabled and elderly are at highest risk of being scalded.

See instruction manual before setting temperature at water heater.

Feel water before bathing or showering.

Temperature limiting valves are available, see manual.

!

DANGER: Applications involving small children, disabled, or elderly persons may require a 120°F or lower thermostat setting to prevent contact with

“HOT” water.

!

DANGER: Hotter water increases the potential for

Hot Water SCALDS .

Thermostat for all Models

E

T

R T

RE Reset button

170°F

(77°C)

140°F (60°C)

110°F

(43°C)

TURN OFF

POWER

BEFORE

SERVICING

Thermostat dial pointer

°

170°F

(77°C)

110°F

(43°C)

140°F (60°C)

TURN OFF

POWER

BEFORE

SERVICING

Thermostat protective cover

NOTICE: Mixing valves are recommended for reducing point of use water temperature by mixing hot and cold water in branch water lines. It is recommended that a mixing valve complying with the Standard for

Temperature Actuated Mixing Valves for Hot Water

Distribution Systems, ASSE 1017 be installed. See page

13 for more details and contact a licensed plumber or the local plumbing authority for further information.

The illustration above shows the temperature adjustment dial used for setting the water temperature. Refer to Operation section of this manual for detailed instructions in how to adjust the thermostat(s).

3

4

WARNING!

For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of life.

Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater. It may save you time and cost. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious bodily injury or death. Should you have problems understanding the instructions in this manual, or have any questions, STOP, and get help from a qualified service technician, or the local electric utility.

FOR INSTALLATIONS IN THE STATE OF CALIFORNIA

California Law requires certain water heater models must be braced, anchored or strapped to resist falling or horizontal displacement due to earthquake motions. For the affected water heaters up to 52 gallon capacity, a brochure with generic earthquake bracing instructions can be obtained from: Office of the State Architect, 1102 Q Street,

Sacramento, CA 95811 or you may call 916-445-8100 or ask a water heater dealer.

However, applicable local codes shall govern installation. For affected water heaters of a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable bracing procedures.

SAFETY PRECAUTIONS

Have the installer show you the location of the circuit breaker and how to shut it off if necessary. Turn off the circuit breaker if the water heater has been subjected to overheating, fire, flood, physical damage or if the ECO fails to shut off.

!

DANGER: To reduce the risk of electric shock disconnect all branch circuits before servicing. This water heater is designed to allow connection to more than one branch circuit

● Read this manual entirely before installing or operating the water heater.

● Use this appliance only for its intended purpose as described in this Use and Care

Manual.

● Be sure your appliance is properly installed in accordance with local codes and the provided installation instructions.

● DO NOT attempt to repair or replace any part of your water heater unless it is specifically recommended in this manual.

All other servicing should be referred to a qualified technician.

● DO NOT turn on the electrical supply or operate this water heater unless it is completely full of water.

READ AND FOLLOW THIS SAFETY INFORMATION

CAREFULLY.

SAVE THESE INSTRUCTIONS

Installing the water heater.

The location chosen for the water heater must take into consideration the following:

Local Installation Regulations

This water heater must be installed in accordance with these instructions, local codes, utility codes, utility company requirements or, in the absence of local codes, the latest edition of the National

Electrical Code. It is available from some local libraries or can be purchased from the National Fire Protection Association,

Batterymarch Park, Quincy, MA 02269 as booklet ANSI/NFPA 70.

Location

Locate the water heater in a clean dry area as near as practical to the area of greatest heated water demand. Long un-insulated hot water lines can waste energy and water.

Place the water heater in such a manner that the thermostat and element access panels can be removed to permit inspection and servicing such as removal of elements or checking controls.

The water heater and water lines should be protected from freezing temperatures. DO

NOT install the water heater in outdoor, unprotected areas.

Make certain the floor underneath the water heater is strong enough to sufficiently support the weight of the water heater once it is filled with water.

!

CAUTION: The water heater should not be located in an area where leakage of the tank or connections will result in damage to the area adjacent to it or to lower floors of the structure. Where such areas cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the water heater.

B

A— Diameter of water heater plus 2 ″ min.

B— Maximum 2 ″

A

Figure 1

To open drain, line should be at least 3/4 ″ ID and pitched for proper drainage.

NOTICE: Auxiliary drain pan MUST conform to local codes.

Drain Pan Kits are available from the store where the water heater was purchased, or any water heater distributor.

Inspect Shipment

Inspect the water heater for possible damage. Check the markings on the rating plate of the water heater to be certain the power supply corresponds to the water heater requirements.

5

6


Thermal Expansion

Determine if a check valve exists in the inlet water line. Check with your local water utility. It may have been installed in the cold water line as a separate back flow preventer, or it may be part of a pressure reducing valve, water meter or water softener. A check valve located in the cold water inlet line can cause what is referred to as a “closed water system” . A cold water inlet line with no check valve or back flow prevention device is referred to as an

“open” water system.

As water is heated, it expands in volume and creates an increase in the pressure within the water system. This action is referred to as “thermal expansion” . In an “open” water system, expanding water which exceeds the capacity of the water heater flows back into the city main where the pressure is easily dissipated.

A “closed water system” , however, prevents the expanding water from flowing back into the main supply line, and the result of “thermal expansion” can create a rapid and dangerous pressure increase in the water heater and system piping.

This rapid pressure increase can quickly reach the safety setting of the relief valve, causing it to operate during each heating cycle. Thermal expansion, and the resulting rapid and repeated expansion and contraction of components in the water heater and piping system can cause premature failure of the relief valve, and possibly the heater itself. Replacing the relief valve will not correct the problem!

The suggested method of controlling thermal expansion is to install an expansion tank in the cold water line between the water heater and the check valve (refer to the illustration below). The expansion tank is designed with an air cushion built in that compresses as the system pressure increases, thereby relieving the over pressure condition and eliminating the repeated operation of the relief valve. Other methods of controlling thermal expansion are also available. Contact your installing contractor, water supplier or plumbing inspector for additional information regarding this subject.

NOTICE: DO NOT apply heat to the HOT or COLD water connections. If sweat connections are used, sweat tubing to adapter before fitting adapter to the water connections on heater.

Any heat applied to the water supply fittings will permanently damage the dip tube and/or heat traps.

Water Supply Connections

Refer to the illustration below for suggested typical installation. The installation of unions or flexible copper connectors is recommended on the hot and cold water connections so that the water heater may

Typical Installation

Union be easily disconnected for servicing if necessary. The HOT and COLD water connections are clearly marked and are 3/4 ″

NPT on all models. Install a shut-off valve in the cold water line near the water heater.

Union

Anode

Drain valve

Figure 2

6" air gap


!

CAUTION: To reduce the risk of excessive pressures and temperatures in this water heater, install temperature and pressure protective equipment required by local codes and no less than a combination temperature and pressure 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 Hot Water Supply Systems, ANSI Z21.22. This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater. Install the valve into an opening provided and marked for this purpose in the water heater, and orient it or provide tubing so that any discharge from the valve exits only within 6 inches above, or at any distance below, the structural floor, and does not contact any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances.″

!

WARNING: The pressure rating of the relief valve must not exceed 150 PSI, the maximum working pressure of the water heater as marked on the rating plate.

Relief Valve

The pressure rating of the relief valve must not exceed 150 psi (1,034 kPa), the maximum working pressure of the water heater as marked on the rating plate. The

BTUH rating of the relief valve must not be less than the input rating of the water heater as indicated on the rating label located on the front of the heater

(1 watt = 3.412 BTUH).

Connect the outlet of the relief valve to a suitable open drain so that the discharge water cannot contact live electrical parts or persons and to eliminate potential water damage.

Piping used should be of a type approved for hot water distribution. The discharge line must be no smaller than the outlet of the valve and must pitch downward from the valve to allow complete drainage (by gravity) of the relief valve and discharge line. The end of the discharge line should not be threaded or concealed and should be protected from freezing. No valve of any type, restriction or reducer coupling should be installed in the discharge line.

!

WARNING: DO NOT turn on the electrical supply or operate this water heater unless it is completely full of water.

The tank must be full of water before heater is turned on. The water heater warranty does not cover damage or failure resulting from operation with an empty or partially empty tank.

To Fill the Water Heater

Make certain the drain valve on the water heater is completely closed.

Open the shut-off valve in the cold water supply line.

Open each hot water faucet slowly to allow the air to vent from the water heater and piping.

A steady flow of water from the hot water faucet(s) indicates a full water heater.

Condensation

Condensation can form on the tank when it is first filled with water. Condensation might also occur with a heavy water draw and very cold inlet water temperature.

This condition is not unusual, and will disappear after the water becomes heated.

If, however, the condensation continues, examine the piping and fittings for possible leaks.

7

8


Electrical Connections - Terminal Block Configuration

!

CAUTION: The presence of water in the piping and water heater does not provide sufficient conduction for a ground.

Non-metallic piping, dielectric unions, flexible connectors etc. can cause the water heater to be electrically isolated.

Electrical Connections - Fused Model

Secondary branch circuit to electrical distribution panel

Primary branch circuit to electrical distribution panel

DO NOT turn on the electrical supply or operate this water heater unless it is completely full of water.

Ground lug

Wire connections to terminal block

Class G

35 AMP Fuses

Electrical Connections - Unfused Model

Secondary branch circuit to electrical distribution panel

Primary branch circuit to electrical distribution panel

Wire connections to terminal block

Ground lug

Some ELD model water heaters are equipped with a terminal block to allow field conversion from single -phase to three-phase and/or simultaneous to nonsimultaneous operation of the elements.

Please refer to the "Potential Field

Conversions" table in the next section to determine the possible field conversion configuration. Please refer to the wiring diagram in the following sections for the factory and field wiring of the terminal block units. The installation must conform to local codes or the latest edition of

National Electric Code.

GROUNDING -The branch circuit wiring should include a separate conductor for grounding. It should be attached to the ground terminal of the water heater to reduce the risk of electric shock. The water heater must be grounded in accordance with local codes or the latest edition of the

National Electric Code.

The terminal block configuration is shipped from the factory as a single phase simultaneous operation, and it is designed to be wired to two independent branch circuits. The first branch circuit is connected to terminals Ll and L2, and it must be sized according to the upper element rating. The second branch circuit is connected to terminals Tl and T2, and it must be sized according to the lower element rating. In this configuration, both elements may turn on at the same time during a heating cycle.


!

CAUTION: The manufacturer’s warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto or in conjunction with the water heater.

The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property. The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices.

Electrical Connections - Field Conversions

Potential Field Conversions

Base Model

Single Phase

Simultaneous

Single Phase Non-

Simultaneous

Single Phase Non-

Simultaneous with

Off- Peak Meter or Timer

Single Phase Non-

Simultaneous with

Off- Peak Meter or

Timer (3-wire)

ELDS30 YES YES YES YES

ELDS40

ELDS52

YES

YES

YES

YES

YES

YES

YES

YES

ELD30

ELD40

ELD52

ELD66

ELD80

ELD120

YES

YES

YES

YES

YES

YES

YES

YES

YES

-

-

-

YES

YES

YES

YES

YES

YES

YES

YES

YES

-

-

-

Three Phase

Simultaneous

YES

YES

YES

YES

YES

YES

YES

YES

YES

For installation to a single branch circuit in either single phase or three phase simultaneous or nonsimultaneous operation, the water heater must be converted in the field according to below instructions.

To install the water heater as a single phase simultaneous operation to a single branch circuit, remove the black/white wire from terminal Tl and the red/black wire from terminal

T2. The black/white wire is field connected with the yellow/black wire to terminal Ll. The red/black wire is field connected with blue/white wire to terminal L2. The branch circuit is connected to terminals Ll and L2, and it must be sized according to the total rating of the water heater (upper element rating+ lower element rating).

Simultaneous

To install the water heater as a single phase non-simultaneous operation to a single branch circuit, remove the black/white wire from terminal Tl and the red/black wire from terminal

T2. The black/white wire is field connected with brown/white wire to terminal TM. The red/black wire is field connected with blue/white wire to terminal L2. The branch circuit is connected to terminals L1 and L2, and it must be sized according to either the upper element rating or the lower element rating, whichever is greater. If they are equal, size the branch circuit according to the lower element rating.

Three Phase Non-

Simultaneous

YES

YES

YES

YES

YES

YES

-

-

-

To install the water heater as a single phase non-simultaneous operation with off-peak meter or timer, remove the red/black wire from terminal T2. The red/black wire is field connected with blue/white wire to terminal L2. The off-peak meter or timer is connected to terminals TM and Tl. The branch circuit is connected to terminal L1 and

L2, and it must be sized according to either the upper element or the lower element rating, whichever is greater. If they are equal, size the branch circuit according to the lower element rating.

To install the water heater as a single phase non-simultaneous operation with off-peak meter or timer (3-wire), remove the black/white wire from terminal Tl. The black/white wire is field connected with brown/white wire to terminal TM. The off-peak meter or timer is connected to terminal T2.

The branch circuit is connected to terminals L1 and L2, and it must be sized according to either the upper element or the lower element rating, whichever is greater. If they are equal, size the branch circuit according to the lower element rating.

Three Phase Simultaneous

To install the water heater as a three phase simultaneous operation, remove

9

10


!

CAUTION: To reduce the risk of electric shock, disconnect both branch circuits before servicing the water heater installed in this configuration. the black/white wire from terminal

Tl. The black/white wire is field connected with yellow/black wire to terminal Ll. The branch circuit is connected to terminals Ll, L2, and

T2. The branch circuit must be sized according to the total rating of the water heater in three phase operation.

!

CAUTION: For the terminal block configuration, the water heater is dual rated for three-phase or singlephase and non-simultaneous or simultaneous operation.

Refer to the wiring diagram and inspect the field wiring to determine the installed water heater configuration.

To install the water heater as a three phase non-simultaneous operation, remove the black/white wire from terminal Tl. The black/white wire is field connected with brown/white wire to terminal TM. The branch circuit is connected to terminals Ll, L2, and

T2. The branch circuit must be sized according to either the upper element or the lower element rating, whichever is greater. If they are equal, size the branch circuit according to the lower element rating.

Wire Sizing

Check the rating plate on the water heater for correct voltage. Refer to the column under the corresponding phase

(1-phase or 3-phase) and element operation (non-simultaneous or simultaneous) for the rated amperage of the water heater. The branch circuit and its overcurrent protection must be sized in accordance with the local codes or the National Electric Code

NFPA 70 using the correct amperage rating on the water heater.

Once installation is complete, compare the installation with the wiring diagram to ensure that the conversion to the desired configuration is complete.


Manual Wiring Diagram Fused

SECONDARY

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL, OFF-

PEAK METER,

OR TIMER

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL L1

T1

T2

L2

G

4 WIRE SIMULTANEOUS

FACTORY WIRING

RED/BLACK

BLUE/WHITE

1

2

1

2

3

4

4

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

BRANCH CIRCUIT

FIELD WIRING

FACTORY WIRING

1

2

1

2

3

4

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

L2

L1

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

G

2 WIRE SIMULTANEOUS

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

L2

L1

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

G

2 WIRE NON-SIMULTANEOUS

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

OFF-PEAK

METER

OR TIMER

L2

L1

T1

TM

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

OFF-PEAK METER

OR TIMER

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

G

T2

L2

L1


RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE


THREE PHASE

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

G

T2

L2

L1

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

THREE PHASE

BRANCH CIRCUIT

TO ELECTRICAL

DISTRIBUTION

PANEL

G

3 PHASE SIMULTANEOUS

T2

L2

L1

RED/BLACK

BLUE/WHITE

YELLOW/BLACK

BLACK/WHITE

BROWN/WHITE

G

3 PHASE NON-SIMULTANEOUS

11

12


Manual Wiring Diagram Unfused

4 WIRE SIMULTANEOUS

FACTORY WIRING

SECONDARY BRANCH

CIRCUIT, OFF PEAK

METER, OR TIMER

BRANCH

CIRCUIT

T1 L1 L2 T2

G

G

2 WIRE SIMULTANEOUS

BRANCH

CIRCUIT

L1 L2

G


OFF PEAK

METER OR

TIMER

BRANCH

CIRCUIT

L1 L2 T2

1

2

1

2

3

4

4

G


BRANCH

CIRCUIT

L1 L2

G

3 PHASE SIMULTANEOUS

THREE PHASE

BRANCH CIRCUIT

L1 L2 T2

1

2

1

2

3

4

G


OFF PEAK METER

OR TIMER

BRANCH

CIRCUIT

TM T1 L1 L2

G

3 PHASE NON-SIMULTANEOUS

THREE PHASE

BRANCH CIRCUIT

L1 L2 T2

BRANCH CIRCUIT

FIELD WIRING

FACTORY WIRING


Branch Circuit Sizing and Wire Size Guide, For ELD(S) 30, 40, and 52 Models

NOTICE: This guide recommends minimum branch circuit sizing and wire size based on National Electric Code. Refer to wiring diagrams in this manual for field wiring connections.

Single Phase

Non-Simultaneous or

Three phase

Non-Simultaneous

Element

Wattage

3,000

4,000

4,500

5,000

5,500

6,000

Recommended Over Current Protection

(Fuse or Circuit Breaker Amperage Rating)

208V

20

25

30

30

35

40

240V

20

25

25

30

30

35

277V*

15

20

20

25

25

30

480V

15

15

15

15

15

20

Copper Wire Size AWG Based on NEC

Table 310.15 (B)(16)

(formerly Table 310.16)

208V

12

10

10

10

8

8

240V

12

10

10

10

10

8

277V*

14

12

12

10

10

10

480V

14

14

14

14

14

12

*277V is for single phase installation only.

For two independent branch circuits installation, both branch circuits must be sized according to the table.

Single Phase

Simultaneous

Wiring

Total

Element

Wattage

6,000

8,000

9,000

10,000

11,000

12,000



208V

40

50

60

60

70

80

240V

35

45

50

60

60

70

277V

30

40

45

45

50

60

480V

20

25

25

30

30

35


Table 310.15 (B)(16)


208V

8

8

6

6

4

4

240V

8

8

8

6

6

6

277V

10

8

8

8

8

6

480V

12

10

10

10

10

8

3 Phase

Simultaneous

Wiring

Total

Element

Wattage

6,000

8,000

9,000

10,000

11,000

12,000



208V

35

45

50

60

60

70

240V

30

40

45

45

50

60

277V

NA

NA

NA

NA

NA

NA

480V

15

20

20

25

25

30


Table 310.15 (B)(16)


208V

8

8

8

6

6

6

240V

10

8

8

8

8

6

277V

NA

NA

NA

NA

NA

NA

480V

14

12

12

10

10

10

13

14


Branch Circuit Sizing and Wire Size Guide, For ELD 66, 80, and 120 Models

NOTICE: This guide recommends minimum branch circuit sizing and wire size based on National Electric Code. Refer to wiring diagrams in this manual for field wiring connections.

208 Volt Rated

Water Heaters

Factory Shipped Rating

Volts 208

Operation

Phase 1-PH

SIM

3-PH

Rating

AMP

OCPD

Wire

12100 12100

58

80

4

50

70

6

277 Volt Rated

Water Heaters


Volts 277

Operation

Phase 1-PH

SIM

3-PH

Rating

AMP

OCPD

Wire

12100 NA

44

60

6

NA

NA

NA

240 Volt Rated

Water Heaters


Volts 240

Operation

Phase 1-PH

SIM

3-PH

Rating

AMP

OCPD

Wire

12100 12100

50

70

6

44

60

6

480 Volt Rated

Water Heaters


Volts 480

Operation

Phase 1-PH

SIM

3-PH

Rating

AMP

OCPD

Wire

12100 12100

25.2

35

8

22

30

10


!

WARNING: If local codes require external application of insulation blanket kits the manufacturer’s instructions included with the kit must be carefully followed.

Insulation Blankets

Insulation blankets, available to the general public, for external use on electric water heaters are not necessary. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters. This water heater meets or exceeds the National

Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary.

The manufacturer’s warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto or in conjunction with the water heater.

The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property.

The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices.

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CAUTION: If local codes require the application of an external insulation blanket to this water heater, pay careful attention to the following so as not to restrict the proper function and operation of the water heater:

 DO NOT cover the operating or warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket.

 DO NOT apply insulation to the top of the water heater. This could interfere with the safe operation of the electrical junction box.

 DO NOT cover the jacket access panel(s) to the thermostat(s) and heating element(s), or pressure and temperature relief valve.

 Inspect the insulation blanket frequently.

Hot and Cold Pipe Insulation Installation

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Typical vertical piping arrangement

For increased energy efficiency, some water heaters have been supplied with two 24” sections of pipe insulation.

Typical horizontal piping arrangement

Please install the insulation, according to the illustrations above, that best meets your requirements.

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Relief Valve Insulation Installation

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CAUTION: Ensure the T&P Valve opening is not obstructed by the insulation.

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Typical top connection arrangement

For increased energy efficiency, some water heaters have been supplied with a 2-3/8” section of pipe insulation.

Please install the insulation, according to the illustrations above, that best meets your requirements.

Heat Trap

For increased energy efficiency, some water heaters have been supplied with factory installed internal or external heat traps in the hot outlet and cold water inlet openings.

Typical side connection arrangement

Slip the insulation cover over the T&P

Valve through the center hole and align the hole in the side with the opening of the T&P Valve.

NOTICE: DO NOT apply heat to the

HOT or COLD water connections.

If sweat connections are used, sweat tubing to adapter before fitting adapter to the water connections on heater. Any heat applied to the water supply fittings will permanently damage the dip tube and/or heat traps.

Installation Checklist

A. Water Heater Location

❑ Close to area of heated water demand.

❑ Indoors and protected from freezing

temperatures.

❑ Area free of flammable vapours.

❑ Provisions made to protect area from water

damage.

❑ Sufficient room to service heater.

❑ Drain pan installed.

B. Water Supply

❑ Water heater completely filled with water.

❑ Air purged from water heater and piping.

❑ Water connections tight and free of leaks.

C. Relief Valve

❑ Temperature and Pressure Relief Valve

properly installed and discharge line run to

open drain.

❑ Discharge line protected from freezing.

D. Wiring

❑ Power Supply voltage agrees with water heater rating plate.

❑ Branch circuit wire and fusing or circuit breaker of proper size.

❑ Electrical connections tight and unit properly grounded.

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Operating the water heater.

CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY

FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes before using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the water begins to flow. DO NOT smoke or use an open flame near the faucet at the time it is open.

Safety Precautions

DO turn off power to water heater if it has been subjected to over heating, fire, flood, physical damage.

DO NOT turn on water heater unless it is completely filled with water.

DO NOT turn on water heater if cold water supply shut-off valve is closed.

If there is any difficulty in understanding or following the

Operating Instructions or the Care and Cleaning section, it is recommended that a qualified service technician perform the work.

WARNING: If the water heater has been subjected to fire, flood or physical damage, turn off power to water heater, and DO NOT operate the water heater again until it has been checked by a qualified service technician.

NOTICE: DO NOT use this appliance if any part has been under water.

Immediately call a qualified installer or service agency to replace a flooded water heater. DO NOT attempt to repair the unit! It must be replaced.

Safety Controls

The water heater is equipped with a combination thermostat and temperature limiting control (ECO) that is located above the heating element in contact with the tank surface. If for any reason the water temperature becomes excessively high, the temperature limiting control (ECO) breaks the power circuit to the heating element.

Once the control opens, it must be reset manually.

CAUTION: The cause of the high temperature condition must be investigated by qualified service technician and corrective action must be taken before placing the water heater in service again.

To reset the temperature limiting control:

Turn off the power to the water heater.

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DANGER: To reduce the risk of electric shock, disconnect all branch circuits before opening the access panel(s). The water heater may be connected to more than one branch circuit.

Remove the jacket access panel(s) and insulation.

The thermostat protective cover should not be removed.

Press the red RESET button.

Replace the insulation and jacket access panel(s) before turning on the power to the water heater.

Operating the water heater.

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DANGER: There is a hot water scald potential if the thermostat is set too high. Locations with small children, disabled, or elderly persons may require a 120°F or lower thermostat setting to prevent contact with HOT water.

Water Temperature Setting

The temperature of the water in the water heater can be regulated by setting the temperature dial of the adjustable surface mounted thermostat(s) located behind the jacket access panel(s).

Dual element heaters have two thermostats.

Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater’s thermostat(s). The lower the temperature setting, the greater the savings in energy and operating costs.

To comply with safety regulations the thermostat(s) are factory set at 120°F or less where local codes require. This is the recommended starting point.

Water temperatures above 125°F can cause severe burns or death from scalding.

Be sure to read and follow the warnings outlined in this manual and on the label on the water heater. This label is located on the water heater near the thermostat access panel.

Mixing valves are recommended for reducing point of use water temperature by mixing hot and cold water in branch water lines. It is recommended that a mixing valve complying with the Standard for

Temperature Actuated Mixing Valves for

Hot Water Distribution Systems, ASSE 1017 be installed. See page 4 for more details and contact a licensed plumber or the local plumbing authority for further information.

The chart below may be used as a guide in determining the proper water temperature for your installation.

If the water heater has been subjected to fire, flood or physical damage, turn off power to water heater, and DO NOT operate the water heater again until it has been checked by a qualified service technician.

NOTICE: DO NOT use this appliance if any part has been under water.

Immediately call a qualified installer or service agency to replace a flooded water heater. DO NOT attempt to repair the unit! It must be replaced.

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Time/Temperature Relationship in Scalds

Temperature

120°F (49°C)

125°F (52°C)

130°F (54°C)

135°F (57°C)

140°F (60°C)

145°F (63°C)

150°F (66°C)

155°F (68°C)

Table courtesy of Shriners Burn Institute

Time To Produce a Serious Burn

More than 5 minutes

1 1 /

2

to 2 minutes

About 30 seconds

About 10 seconds

Less than 5 seconds

Less than 3 seconds

About 1 1 /

2

seconds

About 1 second

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DANGER: Hotter water increases the potential for Hot Water SCALDS .

Reset button

If adjustment is necessary


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Thermostat dial pointer

170°F

(77°C)

110°F

(43°C)

140°F (60°C)

TURN OFF

POWER

BEFORE

SERVICING

Thermostat protective cover

°

170°F

(77°C)

140°F (60°C)

TURN OFF

POWER

BEFORE

SERVICING

110°F

(43°C)

Remove the jacket access panel(s) and insulation exposing the thermostat(s).

The thermostat protective cover(s) should not be removed.

Using a small screwdriver, set the thermostat(s) dial pointer(s) to the desired temperature.

Replace the insulation and jacket access panel(s). Turn on the power to the water heater.

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Care and cleaning of the water heater.

Draining the Water Heater

CAUTION: Shut off power to the water heater before draining water.

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DANGER: Before manually operating the relief valve, make certain no one will be exposed to the hot water released by the valve. The water drained from the tank may be hot enough to present a scald hazard and should be directed to a suitable drain to prevent injury or damage.

In order to drain the water heater, turn off the cold water supply. Open a hot water faucet or lift the handle on the relief valve to admit air to the tank.

Attach a garden hose to the drain valve on the water heater and direct the stream of water to a drain. Open the valve.

DANGER: Before manually operating the relief valve, make certain no one will be exposed to the danger of coming in contact with the hot water released by the valve. The water may be hot enough to create a scald hazard. The water should be released into a suitable drain to prevent injury or property damage.

NOTICE: If the temperature and pressure relief valve on the hot water heater discharges periodically, this may be due to thermal expansion in a closed water system.

Contact the water supplier or your plumbing contractor on how to correct this. DO NOT plug the relief valve outlet.

Routine Preventative Maintenance

Properly maintained, your water heater will provide years of dependable troublefree service.

It is suggested that a routine preventive maintenance program be established and followed by the user.

A water heater’s tank can act as a setting basin for solids suspended in the water.It is therefore not uncommon for hard water deposits to accumulate in the bottom of the tank. It is suggested that a few quarts of water be drained from the water heater’s tank every month to clean the tank of these deposits.

It is further recommended that a periodic inspection of the operating controls, heating element and wiring should be made by service personnel qualified in electric appliance repair.

Most electrical appliances, even when new, make some sound when in operation.

If the hissing or singing sound level increases excessively, the electric heating element may require cleaning. Contact a qualified installer or plumbing contract to inspect.

Rapid closing of faucets or solenoid valves in automatic water using appliances can cause a banging noise heard in a water pipe. Strategically located risers in the water pipe system or water hammer arresting devices can be used to minimize the problem.

The anode rod should be removed from the water heater’s tank annually for inspection and replaced when more than 6 ″ of core wire is exposed at either end of the rod.

At least once a year, lift and release the lever handle on the temperature pressure relief valve, located near the top of the water heater, to make certain the valve operates freely. Allow several gallons to flush through the discharge line to an open drain.

Make sure the cold water supply is turned off before removing anode rod.

Care and cleaning of the water heater.

NOTICE: Refer to the

Hydrogen Gas Caution in the Operating Instructions.

Vacation and Extended Shut-Down

If the water heater is to remain idle for an extended period of time, the power and water to the appliance should be turned off to conserve energy and prevent a build-up of dangerous hydrogen gas.

After a long shut-down period, the water heater’s operation and controls should be checked by qualified service personnel. Make certain the water heater is completely filled again before placing it in operation.

The water heater and piping should be drained if they might be subjected to freezing temperatures.

NOTICE: DO NOT remove the anode rod from the water heater’s tank, except for inspection and/or replacement, as operation with the anode rod removed will greatly shorten the life of the glass lined tank and will exclude warranty coverage.

Anode Rod

This water heater is equipped with an anode rod designed to prolong the life of the glass lined tank. The anode rod is slowly consumed, thereby eliminating or minimizing corrosion of the glass lined tank.

Water sometimes contains a high sulfate and/or mineral content and together with cathodic protection process can produce a hydrogen sulfide, or rotten egg odor in the heated water. Chlorination of the water supply should minimize the problem.

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Replacement Parts.

Temperature &

Pressure relief valve

External heat traps

Instructions For Placing a Parts Order

Address parts orders to the distributor or store where the heater was purchased.

Part description (as noted below) and number of parts desired.

All parts orders should include:

The model and serial number of the water heater from the rating plate.

Specify voltage and wattage as marked on the rating plate.

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CAUTION: For your safety DO

NOT attempt repair of electrical wiring, thermostat(s), heating elements or other operating controls. Refer repairs to qualified service personnel.

Control Panel for

Unfused Models

Ground lug

Terminal block and mounting hardware

Upper thermostat

Dip tube/internal heat trap

Dip tube gasket

Anode rod

Ground lug

Upper thermostat

Upper thermostat protective cover

Heating element gasket

Heating element

Upper thermostat bracket

Terminal block and mounting hardware

Fuse block and mounting hardware

(some models only)

Upper thermostat protective cover

Cavity insulation


Heating element

Upper thermostat bracket


Heating element

Class -G fuses

Cavity insulation

Lower thermostat

Lower thermostat protective cover

Cavity insulation

Jacket access panel(s)

Thermostat bracket

*Drain valve

Before You Call For Service…

Troubleshooting Tips

Save time and money! Review the chart on this page first and you may not need to call for service .

Problem

Rumbling noise

Relief valve producing popping noise or draining

Rattling noise during periods of water usage

Not enough or no hot water

Water is too hot

Possible Causes

Water conditions in your location caused a build up of scale or mineral deposits on the heating elements.

Pressure build up caused by thermal expansion in a closed system.

Internal heat trap fittings in operation.

What To Do

● Remove and clean the heating elements.

● This is an unacceptable condition and must be

corrected. Contact the water supplier or plumbing

contractor on how to correct this. DO NOT plug the

relief valve outlet.

● This is normal for heat trap fittings when in operation

and does not indicate a need for service.

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Water usage may have exceeded the capacity of the water heater.

A fuse is blown or a circuit breaker tripped.

Electric supply may be off.

The thermostat may be set too low.

Leaking or open hot water faucets.

Electric service to your location may be interrupted.

Improper wiring.

Manual reset limit (ECO).

Cold water inlet temperature may be colder during the winter months.

The thermostat is set too high.

● Wait for the water heater to recover after an abnormal

demand.

●

●

disconnect switch, if used, is in the ON position.

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section of this manual.

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●

●

●

Replace fuse or reset circuit breaker.

Make sure electric supply to water heater and

See the Operating the water heater

Make sure all faucets are closed.

Contact the local electric utility.

See the Installing the water heater section of this

manual.

See the Operating the water heater


This is normal. The colder inlet water takes longer

to heat.

● See the Operating the water heater


CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or other safety devices. Refer repairs to qualified service personnel.

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Cavity Insert Instructions

qualified service personnel ONLY, and should only be done when necessary.

170°F

(77°C)

140°F (60°C)

110°F

(43°C)

In order to replace the thermostat or heating element, remove the cavity insert crossbar by following the instructions below:


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Remove the jacket access panel(s) and insulation.

Rotate the crossbar up and down until it breaks away from the remainder of the cavity insert.

(See illustration to the left)

Discard the crossbar. It cannot and need not be replaced.

Replace the thermostat and/or element as necessary.

Replace the insulation and jacket access panel(s) before turning on the power to the water heater.

NOTICE: The cavity insert crossbar is necessary for the manufacturing process only. The removal of the crossbar will not interfere with the operation of the water heater.

Notes:

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Notes:

Notes:

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IF YOU NEED SERVICE

1. Should you have any questions about your new water heater, or if it requires adjustment, repair, or routine maintenance, it is suggested that you first contact your installer, plumbing contractor or previously agreed upon service agency. In the event the firm has moved, or is unavailable, refer to the telephone directory, commercial listings or local utility for qualified service assistance.

2. Should your problem not be solved to your complete satisfaction, you should then contact the Manufacturer’s National Service Department at the following address:

800 Interstate Park Drive

Montgomery,

1-800-432-8373

When contacting the manufacturer, the following information will be requested: a. Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater.

b. Address where the water heater is located and physical location.

c. Name and address of installer and any service agency who performed service on the water heater.

d. Date of original installation and dates any service work was performed.

e. Details of the problems as you can best describe them.

f. List of people, with dates, who have been contacted regarding your problem.

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