Rheem Professional Classic Series Standard Electric User Manual

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!

Double Element Residential Electric Models

Printed in USA

Use & Care Manual

With Installation Instructions for the Installer

AP11058 Rev. 9 (11/03)

Safety Information

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

Installation Instructions

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

W ater Connections . . . . . . . . 6

Electrical Connections . . . . . 8

Operating Instructions

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

W ater Temperature . . . . . . . 13

Care and Cleaning

Draining . . . . . . . . . . . . . . . . 14

Extended Shut-Down . . . . . 14

Maintenance. . . . . . . . . . . . . 14

T r oubleshooting T ips

Before Y ou Call

For Service. . . . . . . . . . . . . . 15

Customer Service

Parts List . . . . . . . . . . . . . . . 16

If Y ou Need

Service Assistance . . . . . . . 18

Wiring Diagram . . . . . . . . . 20

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

FOR YOUR RECORDS

Write the model and serial numbers here:

# #

You can find them on a label on the appliance.

Staple sales slip orcancelled cheque here.

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

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

Time/Temperature Relationship in Scalds

Temperature Time To Produce a Serious Burn

49°C (120°F) More than 5 minutes 52°C (125°F) 11/2to 2 minutes 54°C (130°F) About 30 seconds 57 °C (135°F) About 10 seconds 60°C (140°F) Less than 5 seconds 63°C (145°F) Less than 3 seconds 66°C (150°F) About 11/2seconds 68°C (155°F) About 1 second

Table courtesy of Shriners Burn Institute

The chart shown above may be used as a guide in determining the proper water temperature for your home.

NOTICE: Households with small children, disabled, or elderly persons may require a 49°C (120°F) or lower thermostat setting to prevent contact with “HOT” water.

The temperature of the water in the heater is regulated by the adjustable surface mounted thermostat(s) located behind the jacket access panel(s). Dual element heaters have two thermostats. The thermostat(s) were set at 60°C (140°F) before the water heater was shipped from the factory.

The illustration at the left shows the temperature adjustment dial used for setting the water temperature.

Refer to the Operating Instructions in this manual for detailed instructions in how to adjust the thermostat(s).

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

IMPOR TANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING.

Reset button

Thermostat protective cover (only on certain

models)

Thermostat dial pointer

WARNING!

WATER TEMPERATURE ADJUSTMENT

Safety and energy conservation are factors to be considered when selecting the water temperature setting of water heater’s thermostat. Water temperatures above 52°C (125°F) 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 available for reducing point of use water temperature by mixing hot and cold water in branch water lines. Contact a licensed plumber or the local plumbing authority for further information.

DANGER

HOT

BURN

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.

170

160

TURN OFF

POWER BEFORE

SERVICING

110

120

130140150

IMPOR TANT 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

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 authorities and codes, utility codes or utility company requirements, which must be followed and take precedent over any recommendation in this manual.

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 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.

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 5 cm (2″) min.

B—Maximum 5 cm (2″)

NOTICE: Auxiliary catch pan MUST conform to local codes. Catch Pan Kits are available from the store where the waterheater

was purchased, or any water heater distributor.

To open drain, line should be at least 1.9 cm (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.

Typical Installation

H O T

C O L D

To cold water supply*

Jacket access panel

Relief valve discharge line to

suitable open drain

Drain valve

Electrical junction box (inside jacket)

Hot water outlet

to fixtures

Anode

Shut-off valve

Union Temperature & pressure relief valve

Thermal expansion tank (if required)

Heat trap 15 cm (6″)

minimum

15 cm (6″) air gap

Heat trap 15 cm (6″) minimum

Auxiliary catch pan 5 cm (2’) maximum

To electrical distribution panel

Jacket access panel

Union

Installing the water heater.

Thermal Expansion

Determine if a check valve exists in the inlet water line. 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”. Acold 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 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.

To cold water supply*

* Some models are constructed with a side cold water inlet and will not have an opening on the top of the water heater.

COLD

HOT

W ARNING: The pressur e rating of the relief valve must not exceed 1 034 kPa (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 and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4 M99, must be installed 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. Local codes shall govern the installation of relief valves.

Relief Valve

The BTU/h 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 BTU/h).

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

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.

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.

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.

Additional information on this subject may be found at www.rheem.com under “Library”. Scroll down to the Technical Service Bulletins 1300 Series Section and choose Bulletin #1303.

Typical Installation (Alternate Construction)

To electrical

distribution panel

Heat trap

15cm (6”) minimum

Hot water outlet

to fixtures

Electrical junction box

(use only copper conductors)

Union

Anode

Temperature

Pressure

Relief Valve

Union

Installing the water heater.

NOTICE: This guide recommends minimum branch circuit sizing and wire size. Referto wiring diagrams in this manual for field wiring connections.

Branch Circuit Sizing and Wire Size Guide

T otal Water Recommended Over Current Protection CopperWire Size AWGBased Heater Wattage (fuse or circuit breaker amperage rating) on N.E.C. Table 310-16 (75°C)

208V 240V 277V 480V 208V 240V 277V 480V 3,000 20 20 --- --- 12 12 --- --3,800 25 20 --- --- 10 12 --- --4,000 25 25 --- --- 10 10 --- --4,500 30 25 --- --- 10 10 --- ---

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 the latest edition of the Canadian Electrical Code. Refer to wiring diagrams in the back of this manual for 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 water heater is completely wired to the junction bracket inside the top access panel on front of the water heater. An opening for 1.2 cm (1/2”) or 1.9 cm (3/4”) electrical fitting is provided for field wiring connections.

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 bracket.

Ground screw

Wire connections

Junction bracket

Conduit connector

Wire connections

Junction box cover

Conduit connector

Water heater junction box (Alternate construction)

Ground screw

WARNING

For increased energy efficiency, some water heaters have been supplied with two 61cm (24”) sections of pipe insulation.

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

COLD

HOT

Typical vertical piping arrangement

Typical horizontal piping arrangement

Hot and Cold Pipe Insulation Installation

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 CSA 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.

z Do not apply insulation to the top of the

water heater. this could interfere with the safe operation of the electrical junction box.

z Do not cover the jacket access panel(s)

to the thermostat(s) and heating element(s), or pressure and temperature relief valve.

z 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.

Insulation Blankets

Installing the water heater.

For increased energy efficiency, some water heaters have been supplied with a 6cm (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.

OLD

HOT

Typical top connection arrangement

Typical side connection arrangement

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 line and cold water inlet openings.

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 vapours. ❑ 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 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.

Remove the jacket access panel(s) and insulation.

The thermostat protective cover should not be removed. (Only on certain models).

Press the red RESET button. Replace the insulation and jacket

access panel(s) 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.

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