GE AP12169-5 User manual

Water Heaters
Electric Point of Use
Model: GE Series
The purpose of this manual is twofold: one, to provide the installer
with 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 trouble shooting of the water heater. This manual
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 that they
may understand how to perform these operations.
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.
!
!
Single Element 120 Volt Operation
Residential 21/2 – 20 Gallon
®
LISTED
786H
Part No. AP12169-5 (01/05) Pub. No. 49-50013-4 11-03 JR
Manufactured under trademark license by:
Rheem Manufacturing Company
2600 Gunter Park Drive East, Montgomery, AL 36124-4020
Printed in USA
Use & Care Manual
With Installation Instructions for the Installer
IMPORTANT SAFETY INSTRUCTIONS
WARNING—When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to
persons should be followed, including:
READ ALL INSTRUCTIONS BEFORE USING THIS
WATER HEATER.
The cord and plug connected water heater covered in
this manual (21/2gallon models) must be grounded.
Connect only to properly grounded outlet. See “Electrical
Connections” section on page 8.
Install or locate this water heater in accordance with
the provided installation instructions.
Use this water heater only for its intended use as
described in this manual.
As with any appliance, close supervision is necessary
when used by children.
Do Not use an extension cord set with this water heater.
If no receptacle is available adjacent to the water heater,
contact a qualified electrician to have one properly installed.
Do Not operate this water heater if it has a damaged
cord or plug, if it is not working properly, or if it has
been damaged or dropped.
This water heater should be serviced only by qualified
service personnel. Contact nearest authorized service
center for examination, repair or adjustment.
SAVE THESE
INSTRUCTIONS

Safety Information
Safety Precautions . . . . . . 3, 4
Installation Instructions
Location . . . . . . . . . . . . . . . . . . 5
Water Connections . . . . . . . . . 6
Electrical Connections . . . . . . 8
Pipe Insulation . . . . . . . . . . . . 10
Heat Traps. . . . . . . . . . . . . . . . 10
Installation Checklist . . . . . . . 11
Operating Instructions
Safety Controls. . . . . . . . . . . . 12
Water Temperature . . . . . . . . 13
Care and Cleaning
Draining . . . . . . . . . . . . . . . . . . 14
Extended Shut-Down . . . . . . 14
Maintenance. . . . . . . . . . . . . . 14
Troubleshooting Tips
Before You Call
For Service. . . . . . . . . . . . . . . . 15
Customer Service
Parts List . . . . . . . . . . . . . . . . 16
Wiring Diagram . . . . . . . . . . . 17
Product Registration . . 19, 20
2
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
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 or cancelled check here.
Proof of the original purchase date is needed to obtain service
under the warranty.
IMPORTANT!
Fill out and return the Consumer Product Registration Card that is
in the back of this manual.
If you do need service, you can relax knowing help is only a phone
call away. For service call 800-431-1549.
IF YOU NEED SERVICE
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 specific condition.
!
!
!
!

Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Time/Temperature Relationship in Scalds
Water Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 11/2to 2 minutes
130°f About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 11/2seconds
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 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. To comply with safety regulations
the thermostat(s) were set at 120°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.
DANGER
!
HOT
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.
BURN
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVI CING
90°F150°F
125°F
(66°C)
(52° C)
(32°C)
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
3
Reset button
Thermostat
protective
cover
Thermostat
dial pointer
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 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.

4
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.
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California Law requires that residential water heaters must be braced, anchored or
strapped to resist falling or horizontal displacement due to earthquake motions. For
residential water heaters up to 52 gallon capacity, a brochure with generic earthquake
bracing instructions can be obtained from: Office of the State Architect, 400 P Street,
Sacramento, CA 95814 or you may call 916-445-8100 or ask a water heater dealer.
However, applicable local codes shall govern installation. For residential water heaters
of a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable
bracing procedures.
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety 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
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
This water heater is designed to meet a
wide range of applications. It fulfills a
demand for a small water heater that can
be installed in a limited space such as under
countertops, in cabinets or in a closet.
Locate the water heater in a clean dry
area as near as practical to hot water
fixtures, or close to the water faucet
most frequently used.
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 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.
B
A
To open drain, line
should be at least 3/4″
ID and pitched for
proper drainage.
5
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service

Installing the water heater.
Thermal Expansion
Water Supply Connections
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
“cclloosseeddwwaatteerrssyysstteemm.” 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 pressure within the
water system. This action is referred to as
“tthheerrmmaalleexxppaannssiioonn.” 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 “cclloosseeddwwaatteerrssyysstteemm,” however, prevents
the expanding water from flowing back into
the main supply line, and the result of
“tthheerrmmaalleexxppaannssiioonn”can create a rapid and
dangerous pressure increase in the water
heater and the 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. 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.
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
6
Refer to the illustrations on the following
page 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. Connect cold water supply
line to 3/4” pipe connection near bottom
of water heater on the 6 gallon and 20
gallon models. Install a shut-off valve and
a drain valve (not supplied with heater,
except 2 1/2 gal. models) in cold water line
near water heater. Connect hot water line
to 3/4” pipe connection marked HOT on
side near top of water heater. On the
2 1/2 gallon models, the hot and cold
water connections are 1/2” pipe
connections and are located on top of the
heater. Local codes may require an
anti-siphon device on the water inlet of a
side connect water heater.
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
Recommended
heat trap
6″minimum
Hot water outlet
to fixtures
6″air gap
Suitable open drain
6″
Union
Temperature &
pressure relief
valve
Cold water supply
To cold water
supply
Shut-off valve
Relief
valve
discharge
line to
suitable
open
drain
Unions
*The drain valve is located below and to the right of jacket access panel and is
not visible in this view.
Anode
Jacket
access
panel
Water
Heater
Jacket
Water
Heater
Jacket
Power supply
cord 21/2gal.
models only
Temperature &
pressure relief
valve
Opening
for 1/2″
or 3/4″
electrical
fitting
(use only copper
conductors)
Auxiliary catch pan
Relief
valve
discharge
line
Shut-off valve
Drain valve*
Jacket access
panel
Hot water
outlet
(to fixtures)
Auxiliary
catch pan
Auxiliary catch
pan drain line
Auxiliary catch pan
drain line
Suitable open drain
7
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 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.
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, is supplied and must
remain 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.
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Drain valve
(not supplied)
Vacuum Relief Valve
(Not Supplied)
If required, install per local codes
and valve manufacturer’s
instructions.

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.
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.
Electrical Connections
All wiring must conform to local codes
or latest edition of National Electrical
Code ANSI/NFPA 70.
The voltage requirements and wattage load
for the water heater are specified on the
rating plate on the front of the water heater.
21/2gallon models are supplied with a
plug connected power supply cord for
use only in 120 VAC applications. The
cord must be connected to a properly
grounded receptacle on a branch circuit
with copper conductors, an over current
protection device and a suitable
disconnect means. If desired, straight
field wiring connections can be made to
these models by removing the access
cover on front of heater and
disconnecting the cord set from the
thermostat and the grounding plug. Remove
the cord set and strain relief bushing
from the junction bracket. The hole in the
junction bracket will accommodate 1/2″
or 3/4″electrical fittings. Refer to wiring
diagrams in the back of this manual for
wiring connections.
6 through 20 gallon models are completely
wired to the junction bracket inside jacket
at front of water heater. An opening for
1/2″or 3/4″electrical fitting is provided
for field wiring connections. A separate
branch circuit with copper conductors,
overcurrent protective device and suitable
disconnecting means must be provided
by a qualified electrician. Refer to wiring
diagrams in the back of this manual for
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.
8
Installing the water heater.
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
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.
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. (Refer to the
Certificate of Limited
Warranty for complete terms
and conditions.)

9
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.
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 temperature and
pressure relief valve.
●Do not cover jacket access panels to
thermostats and heating elements.
●Do not cover the electrical junction
box 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.
Branch Circuit Sizing and Wire Size Guide
Total Water Recommended Over Current Protection Copper Wire Size AWG Based
Heater Wattage (fuse or circuit breaker amperage rating) on N.E.C. Table 310-16 (75°C)
120V 208V 240V 120V 208V 240V
1500* 20 15 15 12 14 14
1700 20 15 15 12 14 14
2000 25 15 15 10 14 14
2500 30 15 15 10 14 14
3000 35 20 20 8 12 12
3500 – 25 20 – 10 12
3800 – 25 20 – 10 12
4000 – 25 25 – 10 10
4500 – 30 25 – 10 10
5000 – 30 30 – 10 10
5500 – 35 30 – 8 10
6000 – 40 35 – 8 8
9000 – – 50 – – 8
*Less than 1500 watts may be wired 14 gauge with 15 amp protection. Check Local Electrical Codes, as they will also apply.
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Insulation Blankets

10
Installing the water heater.
Hot and Cold Pipe Insulation Installation
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.
Heat Traps
For increased energy efficiency, some
water heaters have been supplied with
factory installed heat traps in the hot
outlet line and cold water inlet line.
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.
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
R
E
L
I
E
F
V
A
L
V
E
COLD
HOT
Typical vertical piping
arrangement
R
E
L
I
E
F
V
A
L
V
E
COLD
HOT
Typical horizontal piping
arrangement
Typical side piping
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.
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.
R
E
L
I
E
F
V
A
L
V
E
COLD
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.

11
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Installation checklist.
Water Heater Location
■Close to area of heated water
demand.
■Indoors and protected from
freezing temperatures.
■Area free of flammable vapors.
■Sufficient fresh air supply for
proper operation of water heater.
■Provisions made to protect area
from water damage.
■Sufficient room to service heater.
Water Supply
■Water heater completely filled
with water.
■Air purged from water heater and
piping.
■Water connections tight and
free of leaks.
Relief Valve
■Temperature and Pressure Relief
Valve properly installed and
discharge line run to open drain.
■Discharge line protected from
freezing.
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.

Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
12
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.
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.
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.
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.
Press the red RESET button.
Replace the insulation and jacket
access panel(s) before turning on
the power to the water heater.
Emergency Instructions
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.

13
If adjustment is necessary…
Turn off the power to the water
heater.
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.
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVI CING
90°F150°F
125°F
(66°C)
(52° C)
(32°C)
Type 59T thermostat and
protective cover.
Water Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 11/2to 2 minutes
130°F About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 11/2seconds
155°F About 1 second
Table courtesy of Shriners Burn Institute
Time/Temperature Relationship in Scalds
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 located on the water heater
near the gas control (thermostat).
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.
The chart below may be used as a guide
in determining the proper water
temperature for your home.
Reset button
Thermostat
protective
cover
Thermostat
dial pointer
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
DANGER: Hotter water
increases the Potential
for Hot Water SCALDS.
Households with small
children, disabled, or
elderly persons may require
a 120°F or lower gas control
(thermostat) setting to
prevent contact with HOT
water.
!

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
settling 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.
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 shorten the life of the
glass lined tank and will exclude
warranty coverage.
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.
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.
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.
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.
14
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
DANGER: Hotter water
increases the potential for
Hot Water Scalds.
!

Problem Possible Causes What To Do
Rumbling noise Water conditions in your ●Remove and clean the heating elements.
home caused a build up of
scale or mineral deposits
on the heating elements.
Relief valve Pressure build up caused ●This is an unacceptable condition and must be
producing popping by thermal expansion corrected. Contact the water supplier or plumbing
noise or draining to a closed system. contractor on how to correct this. Do not plug the
relief valve outlet.
Rattling noise Internal heat trap ●This is normal for heat trap fittings when in operation
during periods fittings in operation. and does not indicate a need for service.
of water usage
Not enough or Water usage may have ●Wait for the water heater to recover after an abnormal
no hot water exceeded the capacity demand.
of the water heater.
A fuse is blown or a circuit ●Replace fuse or reset circuit breaker.
breaker tripped.
Electric supply may be off. ●Make sure electric supply to water heater and
disconnect switch, if used, are in the ON position.
The thermostat may ●See the Temperature regulation of the water heater
be set set too low. section of this manual.
Leaking or open hot ●Make sure all faucets are closed.
water faucets.
Electric service to your ●Contact the local electric utility.
home may be interrupted.
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 ●This is normal. The colder inlet water takes longer
temperature may be to heat.
colder during the
winter months.
Water is too hot The thermostat ●See the Temperature regulation of the water heater
is set too high. section of this manual.
CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or other
safety devices. Refer repairs to qualified service personnel.
15
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.
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service

Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
Replacement Parts.
For 21/2gallon models and 6, 10 & 20 gallon models with single elements.
Instructions For Placing a Parts Order
To place orders using a Visa/MasterCard
call 800-431-1549.
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.
21/2Gallon Models
R
E
S
E
T
R
E
S
E
T
140
130
120110
100
90
THERM-O-DISC
TURNOFF
POWER
BEFORE
SERVICING
6, 10 and 20 Gallon Models
R
E
S
E
T
R
E
S
E
T
140
130
120110
100
90
THERM-O-DISC
TURNOFF
POWER
BEFORE
SERVICING
Thermostat
Drain valve
shroud
Jacket
access
panel
Thermostat
protective cover
Cavity insulation
Cavity insulation
Thermostat protective cover
Thermostat
Anode rod
Shroud
Snap
bushing
Jacket
access
panel
Relief valve
Heating
element
gasket
Heating element gasket
Heating element
Thermostat
bracket
Heating
element
Thermostat
bracket
Electrical cord
set (120 VAC
models only)
Drain valve
16
Shroud
Nipple,
cold inlet
Nipple,
hot outlet
Relief
valve

2
1
2
THERMOSTAT
& HIGH TEMP.
HEATING
ELEMENT
WHITE
BLACK
BLACK
HG
TO PROPERLY
GROUNDED
RECEPTACLE ON
BRANCH CIRCUIT
JUNCTION
BOX
N
1
2
1
2
THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
HEATING
ELEMENT
WHITE
BLACK
BLACK
H
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION PANEL
JUNCTION
BOX
N
1
G*
17
Wiring diagrams.
Wiring Diagrams for Type–59T Therm-o-disc Thermostats
120 V Plug Connected cord set ONLY
120 V Field Connected ONLY
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service

18
Notes.
Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions

19
Rheem Manufacturing Company
Warranty Registration Department
P.O. Box 34070
Louisville, KY 40232-4070
Please place in envelope and mail to:
✁Cut here
✁Cut here

20
✁Cut here
Consumer Product Ownership Registration
Follow these three steps to protect your
new appliance investment:
If you require service, call 800-431-1549.
12 3
Model Number Serial Number
Consumer Product Ownership Registration
Model NumberWater Heater Serial Number
Important
Mail
Today!
First
Name
Mr. ■■Ms. ■■Mrs. ■■Miss ■■
Street
Address
City
State
Date Placed
In Use
Month Day Year
Zip
Code
Apt. #
Last
Name
Phone
Number __
Complete and mail
this Consumer
Product Ownership
Registration today.
After mailing the
registration below,
store this document
in a safe place. It
contains information
you will need should
you require service.
Read your Owner's
Manual carefully.
It will help you
operate your new
appliance properly.
NOTICE: Failure to complete and return this card does not diminish your limited warranty rights.