Water Heaters

Electric Residential

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!

with Electronic Control (Demand Response Ready)

LISTED

786H

AP21980 Rev 02

Use & Care Manual

With Installation Instructions for the Installer

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.

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 THIS MANUAL

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 specific condition.

READ THE SAFETY INFORMATION

Care and Cleaning

Draining ................ 22

Maintenance ............. 22

Extended Shut-Down ..... 23

Safety Information

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

Installation Instructions

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

Water Connections ........ 6

Electrical Connections. . . . . . 8

Operating Instructions

Safety Controls .......... 12

Water Temperature ........13

Electronic Control

Operation . . . . . . . . . . 14 - 17

Setup Wi-Fi ..............18

Error Codes for

Electronic Control .........19

EcoPort (CTA-2045) ... 20, 21

Troubleshooting Tips

Before You Call

For Service .............. 24

Local Mode ............. 25

Customer Service

Parts List ................ 26

Cavity Insert Instructions ...27

Wiring Diagram ......... 28

If You Need

Service ................. 32

The chart shown above may be used as a guide

in determining the proper water temperature for your

home.

DANGER: Households with small children, disabled,

or elderly persons may require a 120°F (49°C) or lower

thermostat setting to prevent contact with “HOT” water.

The temperature of the water in the heater is

regulated by the electronic control and surface

mounted temperature sensors.

DO NOT attempt to set the temperature by

removing the electronic control or lower access

panel. See the electronic control operation section

of this manual.

DANGER: Hotter water increases the potential for

Hot Water SCALDS.

NOTICE: When used in Advanced Loadup demand

response applications a thermostatic mixing valve

conforming to ASSE 1017 shall be installed on the

hot water supply line following all manufacturer

installation instructions. See page 20 for additional

installation information.

IMPORTANT SAFETY INFORMATION.

READ ALL INSTRUCTIONS BEFORE USING.

DANGER!

WATER TEMPERATURE SETTING

Safety and energy conservation are factors to be considered when selecting the

water temperature setting of water heater’s thermostat. Water temperatures

above 125°F (52°C) can cause severe burns or death from scalding. Be sure to read

and follow the warnings outlined on the label pictured below. This label is also

located on the water heater near the thermostat access panel.

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.

DANGER

HOT

Water temperature over 125° F (52°C)

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.

BURN

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes

125°F (52°C) 1

/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 1

/2 seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

IMPORTANT SAFETY INFORMATION.

READ ALL INSTRUCTIONS BEFORE USING.

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.

READ AND FOLLOW THIS SAFETY INFORMATION

CAREFULLY.

SAVE THESE INSTRUCTIONS

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.

● 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.

SAFETY PRECAUTIONS

FOR INSTALLATIONS IN THE STATE OF CALIFORNIA

California Law requires that all new and replacement water heaters, and all existing

residential water heaters, must be braced, anchored, or strapped to resist falling or horizontal

displacement due to earthquake motion. At a minimum, any water heater shall be secured

in accordance with the California Plumbing Code, or modifications made thereto by a city,

county, or city and county pursuant to Section 17958.5. Generic instructions for California

titled “Guidelines for Earthquake Bracing Residential Water Heaters” can be obtained by:

• Writing the California, Department of General Services, Division of State Architect, 1102 Q

Street, Suite 5100, Sacramento, CA 95814

• Calling (916) 445-8100

• Following web address:

https://www.dgs.ca.gov/-/media/Divisions/DSA/Publications/gas_shutoff/waterheaterbracing

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 uninsulated hot

water lines can waste energy and water.

Place the water heater in such a manner

that the upper electronic control and the

lower 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 catch pan,

adequately drained, be installed under

the water heater.

A— Diameter of water

heater plus 2″ min.

B— Maximum 2″

NOTICE: Auxiliary catch pan MUST conform to local codes.

Catch Pan Kits are available from the store where the water heater was purchased, or

any water heater distributor.

To open drain, line

should be at least 3/4″ ID

and pitched for proper

drainage.

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.

NOTICE: DO NOT

install the water heater in

attics where the tempera-

ture may exceed 150°F

(66°C).

Installing the water heater

Typical Installation

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.

NOTICE: This electric

water heater is not intended

to be used with Eemax or

similar water temperature

boosting products.

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 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.

Vacuum Relief Valve

(Not Supplied)

If required, install per local codes

and valve manufacturer’s

instructions.

Heat trap

6" minimum

Auxiliary catch

pan 2" maximum

Drain Valve

6" air gap

Relief valve discharge line to

suitable open drain

Thermal

expansion tan

(if required)

Heat trap

6" minimum

To cold water

supply

Hot water outlet

to xture

User Interface Control

Lower Access Panel

Electrical junction box

(use only copper conductors)

EcoPort (CTA-2045)

Shuto

valve

Anode

Union

Temperature

Pressure relief

valve

To electric

distribution panel

Shuto valve

(Optional)

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.

A new combination temperature and pressure relief valve, complying with the Standard for Relief

Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed and must remain in

the opening provided and marked for the purpose on the water heater. No valve of any type should be

installed between the relief valve and the tank.

Relief Valve

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.

To Fill the Water Heater

Make certain the drain valve 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.

WARNING: 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.

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.

Installing the water heater

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.

Branch Circuit Sizing and Wire Size Guide

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

A separate branch circuit with

copper conductors, overcurrent

protective device and suitable

disconnecting means must be

provided by a qualified electrician.

All wiring must conform to local

codes or latest edition of National

Electrical Code ANSI/NFPA 70.

The water heater is completely

wired to the junction box inside

jacket at the top front of the water

heater. An opening for 1/2″ or 3/4″

electrical fitting is provided for

field wiring connections.

The voltage requirements and

wattage load for the water heater

are specified

on the rating plate on the front of

the water heater.

The branch circuit wiring should

include either:

Metallic conduit or metallic

sheathed cable approved for

use as a grounding conductor

and installed with fittings

approved for the purpose.

Non-metallic sheathed cable,

metallic conduit or metallic

sheathed cable not approved

for use as a ground conductor

shall include a separate

conductor for grounding. It

should be attached to the

ground terminals of the water

heater and the electrical

distribution box.

Water heater junction box.

Single Phase

Wiring

Total Water

Heater Wattage

Recommended Over Current Protection

(fuse or circuit breaker amperage rating)

Copper Wire Size AWG Based

on N.E.C Table 310-16 (75

240V 240V

4,500 25 10

5,500 30 10

NOTE: Should this heater not be involved in a Demand Response

Program, the EcoPort (CTA-2045) connections shown above will not

affect the functionality or performance of the water heater.

For increased energy efficiency, some

water heaters have been supplied with

two 24” sections of pipe insulation.

Please install the insulation, according

to the illustrations above, that best meets

your requirements.

Hot and Cold Pipe Insulation Installation

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.

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.

WARNING: If local

codes require external

application of insulation

blanket kits the

manufacturer’s instructions

included with the kit must

be carefully followed.

Typical vertical piping arrangement

(Shutoff Valve Optional)

Typical horizontal piping arrangement

(Shutoff Valve Optional)

Installing the water heater

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.

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.

Typical top connection arrangement

(Optional Shutoff Valve Not Shown)

Relief Valve Insulation Installation

CAUTION: Ensure the

T&P Valve opening is not

obstructed by the

insulation.

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.

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.

LeakSense

Should this water heater be equipped with built-in leak detection the following

information is applicable.

The leak detection device (LeakSense

) detects the presence of water and

immediately alerts the electronic control as well as the EcoNet® app on the

cellular phone.

LeakGuard

Should this water heater be

equipped with built-in leak detection

(LeakSense

) and automatic shutoff

valve the following information is

applicable. When water is detected,

the electronic control will shut down

the heating elements in addition to

following the LeakSense

protocols

detailed above. Please see more details

on servicing on page 17.

LeakGuard

Self Check

The automatic water shut off valve

has a self check feature which runs

every 30 days once the water heater

is powered on. This feature works by

closing and reopening the automatic

water shut off valve. In case the valve

fails to reopen, the water heater will be

DISABLED. The water heater gives

alert when the automatic water shut off

valve fails to close.

WARNING: Failure

to follow the instructions

provided in this manual

may permanently

damage the unit and

void the manufacturer’s

warranty.

WARNING: Removing

automatic water shut off

valve will Disable it from

conducting the self check.

The automatic water shut

off valve will also not

CLOSE in the event a leak

is detected by LeakSense

Troubleshooting Automatic Water Shut O Valve

1. Disconnect Automatic Water Shut o

Valve harness.

2. Conrm valve is open, if not, rotate

valve knob to open.

3. Press the clear alarm button for 10

seconds. After which time, the control

will then generate an audible tone.

4. Water heater will be ENABLED and

will resume heating water.

NOTICE: Once a new automatic shut off

valve is installed and connected properly,

the water heater will detect the automatic

shut off valve and then be included in the

leak detection system.

Installation Checklist

A. Water Heater Location

B. Water Supply

C. Relief Valve

D. Wiring

❑ Close to area of heated water demand.

❑ Indoors and protected from freezing

temperatures.

❑ Area free of flammable vapors.

❑ Provisions made to protect area from water

damage.

❑ Sufficient room to service heater.

❑ Water heater completely filled with water.

❑ Air purged from water heater and piping.

❑ Water connections tight and free of leaks.

❑ Temperature and Pressure Relief Valve

properly installed and discharge line run to

open drain.

❑ Discharge line protected from freezing.

❑ 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.

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 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

person or serviceman perform the

work.

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 at the kitchen sink 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 Controls

The water heater is equipped with a

temperature sensor and temperature

limiting control (ECO) that is located

above the upper 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.

Remove the user interface control

and insulation.

Press the red RESET button

located on power board and upper

sensor assembly.

Replace the insulation and user

interface control before turning on

the power to the water heater.

WARNING: If the water

heater has been subjected

to flood, fire, or physical

damage, turn off power and

water to the water heater.

DO NOT operate the water

heater again until it has

been thoroughly checked by

qualified service personnel.

Upper

Element

protective

cover

Reset Button

Water Temperature

Time/Temperature Relationship in Scalds

Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes

125°F (52°C) 1

/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 1

/2 seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

DANGER: There is a

hot water scald potential if

the thermostat is set too

high. Households with small

children, disabled, or

elderly persons may require

a 120°F (49°C) or lower

thermostat setting to

prevent contact with HOT

water.

Water Temperature Set Point

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.

Water temperatures above 125°F (52°C)

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 above the

lower 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 3 for more

details and contact a licensed plumber or

the local plumbing authority for further

information.

The electronic control allows the water

temperature to be set from 110°F (43°C)

to 150°F (66°C).

The Performance Platinum residential

electric water heater incorporates a

VACATION mode. This sets the

temperature setting to a predetermined

lower thermostat setting.

The chart below may be used as a guide in

determining the proper water temperature

for your home.

Refer to "Programming the Electronic

Control Instructions" on page 14.

Programming the Electronic Control

Setting the Water Temperature

Changing The Water Temperature

115°F

(46°C)

125°F

(52°C)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

When power is applied, the

water heater will be in a

Disabled mode. This means that

the water heater is not heating

the water and only the power

LED is illuminated. Press the

RIGHT arrow until the desired

temperature is shown.

Reduce Water Temperature:

Press LEFT arrow until the

desired temperature is shown.

Increase Water Temperature:

Press RIGHT arrow until the

desired temperature is shown.

NOTE: A change in

temperature is in increments

of 5°F unless the EcoNet® app

is used.

DANGER: Hotter water

increases the potential for Hot

Water SCALDS.

Locking The Keypad

Unlocking The Keypad

Vacation Setting On

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Press and hold both arrow

buttons for 3 seconds to LOCK

the control. Locking will reduce

chance of unintentional changes

in water temperature.

Press and hold both arrow

buttons for 3 seconds to

UNLOCK the control.

Unlocking allows changes to

water temperature as needed.

Press LEFT arrow until the

VACATION indicator is lit.

This mode will reduce the water

temperature to save energy

during times when hot water is

not needed.

Vacation Setting Off

Heating Status

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Press RIGHT arrow until the desired

water temperature is shown on the

display.

When the water temperature indicator

is blinking, this means that a heating

element is on.

Blinking Indicator

Programming the Electronic Control

Setting The Water Heater Above 140°F (60°C)

(Not Available on the EcoNet app)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Press and hold both arrow buttons

for 3 seconds to unlock the keypad

and allow water temperatures above

140°F (60°C).

A press of the right arrow will

increase the water temperature

setting up to 150°F (66°C).

The keypad will not lock when

decreasing water temperatures

below 140°F (60°C).

DANGER: Hotter water

increases the potential for Hot

Water SCALDS.

24-Hour Leak Detection Override

Mute Alarm Beep

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Press the CLEAR ALARM button for 1 second. The

controller will beep after the button is released. This

will silence the alarm beep and allow the heater to

run normally for 24-hours.

If water is detected while the override is active, the

SERVICE NEED indicator will be solid and the

EcoNet app will display an alert.

Prior to using the 24 hour override feature, check to determine the source of the leak. If

the leak is not coming from the water heater, stop the leak if possible and clean any excess

water around the water heater. Contact the Rheem call center or your local plumber if leak

detection alert persists after the 24 hour override. The use of a fan can shorten the time

to dry any residual moisture around the water heater. If a leak is coming from the water

heater, call for service.

Press the CLEAR ALARM button. This will silence

the alarm beep.

The alarm condition will remain and must be

corrected in order to remove the LED and silence the

beep permanently.

NOTE: The nature

of a water heater

install often result in

spilled water which

can trigger the leak

detection alarm and

closing of shutoff

valve, disabling the

water heater.

WARNING: The

use of heat to dry

the residual moisture

from a spill or leak is

NOT PERMITTED.

This section is only applicable if leak sensor/shut off valve system is installed.

Setting Up Wi-Fi

Wi-Fi

Wi-Fi Setup Procedure

Failure to Connect to User’s Router or Network

Your heater has integrated Wi-Fi capability. By connecting your heater

to the internet, you can access the full benefits of the water heater,

including remote control, leak detection alerts, and diagnostic alerts on

your mobile device.

1. Upon initial power up, the Wi-Fi

module is DISABLED.

a. Press the Wi-Fi SETUP button for 2

seconds. The keypad will beep and

Wi-Fi indicator will blink blue after

the press of the W-Fi Setup button.

b. SETUP mode will remain active for 30

minutes. The Wi-Fi SETUP button can

be pressed again to restart the setup

process.

2. Connect mobile device to the

local Wi-Fi network that the

water heater will connect to.

3. Download the EcoNet® app

via the App Store or Google

Play to your mobile device.

Create an EcoNet® account

and sign in.

4. The water heater is now able

to communicate with the app.

5. Follow the instructions in the

EcoNet® app to complete the

setup.

6. Blinking Wi-Fi indicator will

now be solid blue.

1. In the event that the Wi-Fi does not connect to the router

or network, the Wi-Fi Status LED will blink red 3 times

followed by a pause.

2. A reset of the Wi-Fi module will be required if changes

like a new router; router SSID or password change; new

user or homeowner occur.

3. Press the Wi-Fi Setup button for 5 seconds. The keypad

will beep 3 times.

4. Follow the above Wi-Fi setup procedure. If this does not

correct this issue, contact customer care support.

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Blinking Indicator

Scheduling

Heating

Status

Set Point

Slider

Available

Hot Water

Indicator

Energy Usage

Network Settings

Schedule Status

NOTE: Should you have a problem getting the Wi-Fi setup,

contact CSS at 1-800-255-2388.

Error Codes for Electronic Control

CAUTION: For your safety DO NOT attempt repair of electrical wiring, temperature sensor, electronic control,

heating elements or other safety devices. Refer repairs to qualified service personnel.

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

NOTE: The EcoNet®

app will display all

Alerts and Alarms in

the EcoNet® app with

specifics about the cause.

In the event of an error, the SERVICE NEEDED LED will blink red or remain solid red. This will depend on the type

of error that has occurred. The water heat will remain operational when an ALERT occurs. There are five (5) ALARM

codes that represent a family of ALARMS where the water heater will shut down. Note that several of the error codes

detailed below are only applicable should a leak sensor/shut off valve system be installed on the heater.

Blinking

Indicator

NUMBER OF BLINKS

ERROR CODES

TYPE SERVICE NEEDED LED DESCRIPTION/ACTION

ALERT Solid red

1. Leak sensor disconnected. Open the lower element cavity. If it is connected, call customer

service. If is not connected, reconnect the leak sensor to reset the error.

2. Conguration data restore failure. Call for service.

3. Shut o valve cannot close (self-check). Call for service and refer to the LeakGuard

section of the manual.

4. Wi-Fi or Control Communication Error. Also, the Wi-Fi LED will turn red. See the Failure

to Connect to User’s Router or Network section of this manual.

5. Leak detected (24-hour leak alarm override active). Verify there is no longer a leak. Refer

to the 24-HOUR LEAK DETECTION OVERRIDE section of the manual.

ALARM

One (1) red blink followed by a

pause

1. Disconnection of lower thermistor. Please call for service.

2. Failure of lower thermistor. Please call for service.

Two (2) red blinks followed by a

pause

(Only applicable should

leaksense/leakguard system be

installed on heater)

1. Water in contact with wick or rope sensor. Check the pan for water. If there is no water

present, disconnect the sensor, dry and reinstall it to reset the error. Use of the LEAK

OVERRIDE FUNCTION maybe be required. Refer to the 24-HOUR LEAK DETEC-

TION OVERRIDE section of the manual. If there is water in the pan, call for service.

2. Shuto valve is not connected. Check harness connection. If alarm persists, call for service

and refer to the Leak-GuardTM section of the manual.

3. Shuto valve input error. Call for service and refer to the LeakGuard

section of the

manual.

4. Shuto valve failed to close. Call for service and refer to the LeakGuard

section of the

manual.

5. Shuto valve failed to re-open. Call for service and refer to the LeakGuard

section of the

manual.

6. Shut o valve cannot open (self-check). Call for service and refer to the LeakGuard

section of the manual.

Three (3) red blinks followed by

a pause

1. Tank not lled with water. Please ll the tank with water and recycle power.

Four (4) red blinks followed by

a pause

1. Disconnection of wire(s) to upper or lower element or ECO. Call for service.

2. Upper element wire(s) and lower element wire(s) switched. Call for service.

3. ECO tripped and needs reset. Reset ECO or call for service.

4. Failure of one or both elements. Call for service.

Five (5) red blinks followed by a

pause

1. Upper or lower element relay stuck on. Please call customer service.

2. Upper or lower temperature conversion error. Please call customer service.

3. Conversions stuck error. Call for service.

4. Conversion drift error. Call for service.

5. On-board temperature protection error. Call for service.

6. Failure or disconnection of upper thermistor. Please call for service.

x1 = Lower Thermistor Failure

x2 = Leak Detected or Shuto Valve Error

x3 = Dry Fire (Heating without water)

x4 = Element Wiring or Emergency Cut Out

x5 = Control or Power Board Error

Hot Water Outlet

Nominal 3/4" size mixing or tempering valve (refer to warning

above). Follow mixing or tempering valve manufacturer's instructions

for installation of the valve

Cold Water Inlet

3/4" Tempered

domestic hot water

supply to house

Shuto Valve

(optional)

NOTICE: If this water

heater is currently

enrolled in Advanced

Loadup, a thermostatic

mixing valve

conforming to ASSE

1017 shall be installed

on the hot water

supply line following

all manufacturer

installation.

EcoPort (CTA-2045)

EcoPort (CTA-2045) CTA Module Communication with the Water Heater

1. To ENABLE communication of the EcoPort (CTA-

2045) module with the water heater, press the LEFT

arrow for 10 seconds. After which time, the control will

then generate an audible ASCENDING tone.

2. To DISABLE communication of the EcoPort (CTA-

2045) module with the water heater, press the LEFT

arrow for 10 seconds. After which time, the control will

then generate an audible DESCENDING tone.

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

NOTE: To re-enroll see page 20.

EcoPort (CTA-2045)

EcoPort (CTA-2045) CTA Module Communication with the Water Heater

Cancel EcoPort Override

1. To EXIT the Demand Response Program after water heater

enrollment, press either the LEFT or RIGHT arrows once.

The water heater shall display current temperature set point.

2. The water heater will now remain un-enrolled in the Demand

Response Program for the following 24 hours.

3. After the 24-hour period transpires, the water heater will

automatically return to the enrolled Demand Response

Program. This process will be confirmed by the water heater’s

3 blinking temperature set point LEDs.

1. To Cancel the Override press and hold the LEFT arrow for

5 seconds. The water heater shall emit and audible tone up

chime.

2. The unit will confirm it has canceled the Override by the

water heater’s 3 blinking temperature set point LEDs to signal

that it is ready to accept any upcoming Demand Response

commands.

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

CLEAR

ALARM

VACATION 110

UNLOCK/LOCK

120

(3 SEC)

130 140 150

WiFi

SETUP

SERVICE NEEDED

SET POINT (°F)

Care and cleaning of the water heater.

Draining the Water Heater

CAUTION: Shut off power to the

water heater before draining water.

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.

Routine Preventative Maintenance

Properly maintained, your water heater

will provide years of dependable trouble-

free service.

It is suggested that a routine preventive

maintenance program be established and

followed by the user.

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.

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.

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.

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.

Make sure the cold water supply is turned

off before removing anode rod.

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.

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.

The water heater and piping should be

drained if they might be subjected to

freezing temperatures.

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.

NOTICE: Refer to the

Hydrogen Gas Caution in

the Operating Instructions.

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.

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.

Care and cleaning of the water heater.

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.

CAUTION: For your safety DO NOT attempt repair of electrical wiring, temperature sensor, electronic control,

heating elements or other safety devices. Refer repairs to qualified service personnel.

Problem Possible Causes What To Do

Rumbling noise

Water conditions in your home

caused a build up of scale or

mineral deposits on the heating

elements.

● Remove and clean the heating elements.

Relief valve

producing popping

noise or draining

Pressure build up caused by ther-

mal expansion in a closed system.

● 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.

Rattling noise

during periods

of water usage

Internal heat trap ttings in opera-

tion.

● This is normal for heat trap ttings when in operation and does

not indicate a need for service.

Not enough or

no hot water

Water usage may have exceeded the

capacity of the water heater.

● Wait for the water heater to recover after an abnormal demand.

A fuse is blown or a circuit breaker

tripped.

● Replace fuse or reset circuit breaker.

Electric supply may be o.

● Make sure electric supply to water heater and disconnect

switch, if used, are in the ON position.

The thermostat may be set set too

low.

● See the Temperature regulation of the water heater section of

this manual.

Leaking or open hot water faucets.

● Make sure all faucets are closed.

Electric service to your home may

be interrupted.

● Contact the local electric utility.

Improper wiring.

● See the Installing the water heater section of this manual.

Manual reset limit (ECO).

● See the Temperature regulation of the water heater section of

this manual.

Cold water inlet temperature may

be colder during the winter months.

● This is normal. The colder inlet water takes longer to heat.

Auto shuto valve is closed

(ONLY APPLICABLE SHOULD

THE LEAKSENSE/LEAKGUARD

SYSTEM BE INSTALLED)

Auto shuto valve is not connected.

● Turn power o to the water heater. Press and rotate the shuto

valve knob counterclockwise until it stops. The arrow of the

valve position indicator will be pointed to OPEN.

● Ensure the Auto shuto valve is connected. See the Leak-

Guard

section of this manual.

Water is too hot

The thermostat is set too high.

● See the Temperature regulation of the water heater section of

this manual.

Cannot set

above 140°F (60°C)

The keypad is locked

● See conguration menu section on programming the electronic

control.

Diagnostic Mode

For additional unit information, you can

connect directly to the water heater via

local mode and use the EcoNet® app for

more details alarm and alert information.

To connect to the water heater via local

mode follow these steps.

1. Press the Wi-Fi step up button until the

unit beeps and the Wi-Fi LED blinks

blue.

2. From the EcoNet® app click on

Diagnostic Mode.

3. Press the connect button in the app.

4. Follow the on screen instructions.

5. Once connected you can view detailed

alarm history and network configuration

settings.

6. Once complete Close the app.

7. If your water heater was connected to

your home network previously, it will

return to that network.

Replacement Parts.

Instructions For Placing a Parts Order

Address parts orders to the distributor or

store where the heater was purchased.

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.

Part description (as noted below) and

number of parts desired.

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.

User Interface

Control

Jacket Access

Cover

Cavity Insulation

Upper Element

Protective Cover

Lower Protective

Element Cover

Lower

Thermostat

Bracket

Water Sensor

(Optional)

Drain Valve

Junction Box Cover

Anode Rod

Dip Tube Gasket

Dip Tube

Outlet Water Nipple

Housing

EcoPort (CTA-2045) Harness

Outlet Water Nipple

T&P Insulation

T&P Valve

Upper

Thermostat

Bracket

Lower

Sensor

Power Board and

Upper Sensor

Upper

Heating

Element

Lower

Heating

Element

Heating Element Gasket

Auto Shuto Valve (Optional)

Cavity Insert Instructions

The following instructions are intended for

qualified service personnel ONLY, and should only

be done when necessary.

Upper

Lower

In order to replace the thermostat or heating element,

remove the cavity insert crossbar by following the

instructions below:

Turn off the power to the water heater.

Remove the jacket access panel or electronic control

and insulation.

Only for the lower temperature sensor and lower

element, 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 temperature sensor and/or element as

necessary.

Replace the insulation and jacket access panel/

electronic control 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.

Wiring Diagram

This water heater is wired as indicated in the schematic below. Use only a 2 wire power feed with

ground connection for this water heater.

Upper

Element

Lower

Element

J15J3

Power board

Control

board

GND1

J12

J14

J11

Thermistor

12 AWG Solid wire

Low voltage wire – 22 AWG

Multi pin connector

Junction

box

Blue

1 2

3 4

Multi conductor low voltage wire(s)

J10

CTA-2045

Connector

Housing

18 AWG Stranded wire

Leak

Sensor

J19

Shutoff

Valve

Notes

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, Alabama 36109

Phone: 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.