Kenmore 153.331760 User manual

1www.sears.com
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A
Owner’s Manual
FOR POTABLE WATER HEATING ONLY
NOT SUITABLE FOR SPACE HEATING
NOT FOR USE IN MOBILE HOMES
MODEL NO. CAPACITY
153.331760 74 Gallon (280 Liter)
153.331770HA 74 Gallon (280 Liter) High Altitude
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
• Safety Instruction
• Installation
• Operation
• Care and Maintenance
• Troubleshooting
• Parts List
POWERMISER™ 12
GAS WATER HEATER
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PRINTED 0707 186079-000

2
SAFE INSTALLATION, USE AND SERVICE
Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important
that the meaning of each safety message is understood by you and others who install, use or service this water heater.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and
how to avoid the risk of injury.
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances
known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of
potential exposure to such substances.
This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. This
appliance can cause low level exposure to some of the substances listed, including formaldehyde, carbon monoxide and soot.
IMPORTANT DEFINITIONS
•Gas Supplier: The natural gas or propane utility or service who supplies gas for utilization by the gas burning
appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of
gas piping up to and including the natural gas meter or propane storage tank of a building. Many gas suppliers also
offer service and inspection of appliances within the building.
DANGER
WARNING
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
could result in death or injury.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in death or injury.
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result
in minor or moderate injury.
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result
in property damage.
CAUTION
© Sears, Roebuck and Co.

3
SAFETY PRECAUTIONS

4
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE ................................................................................................................ 2
SAFETY PRECAUTIONS ............................................................................................................................................. 3
TABLE OF CONTENTS ................................................................................................................................................ 4
CUSTOMER RESPONSIBILITIES ............................................................................................................................... 5
PRODUCT SPECIFICATIONS ..................................................................................................................................... 5
MATERIALS AND BASIC TOOLS NEEDED ................................................................................................................. 6
Material Needed ..................................................................................................................................................... 6
Basic Tools ............................................................................................................................................................. 6
TYPICAL INSTALLATION ............................................................................................................................................. 7
INSTALLATION INSTRUCTIONS ............................................................................................................................ 8-17
Removing the Old Water Heater ............................................................................................................................. 8
Facts to Consider About the Location ................................................................................................................ 9,10
Insulation Blankets ........................................................................................................................................... 10,11
Combustion Air and Ventilation for Appliances
Located in Unconfined Spaces ............................................................................................................................. 11
Combustion Air and Ventilation for Appliances
Located in Confined Spaces ............................................................................................................................ 11,12
Water Piping .................................................................................................................................................... 12,13
Temperature Pressure Relief Valve ................................................................................................................. 14,15
Filling the Water Heater ........................................................................................................................................ 15
Venting ............................................................................................................................................................. 15,16
Gas Piping ....................................................................................................................................................... 16,17
Sediment Trap ...................................................................................................................................................... 17
OPERATING INSTRUCTIONS .............................................................................................................................. 18,19
Lighting & Operating Label ................................................................................................................................... 18
Temperature Regulation ....................................................................................................................................... 19
SERVICE AND ADJUSTMENT .............................................................................................................................. 20-22
Tank (Sediment) Cleaning .................................................................................................................................... 20
Venting System Inspection .................................................................................................................................... 20
Burner Inspection .................................................................................................................................................. 20
Burner Cleaning .................................................................................................................................................... 20
Housekeeping ....................................................................................................................................................... 21
Anode Rod Inspection .......................................................................................................................................... 21
Temperature-Pressure Relief Valve Operation ...................................................................................................... 21
Draining ................................................................................................................................................................ 22
Service.................................................................................................................................................................. 22
TROUBLESHOOTING GUIDE .............................................................................................................................. 23-26
Start Up Conditions .......................................................................................................................................... 23,24
Thermal Expansion .......................................................................................................................................... 23
Strange Sounds ............................................................................................................................................... 23
Draft Hood Operation ....................................................................................................................................... 23
Condensation ............................................................................................................................................. 23,24
Smoke/Odor .................................................................................................................................................... 24
Operational Conditions .................................................................................................................................... 24,25
Smelly Odor ..................................................................................................................................................... 24
Air in Hot Water Faucets.................................................................................................................................. 24
High Temperature Shut-Off System ................................................................................................................. 24
Leakage Checkpoints ...................................................................................................................................... 25
Troubleshooting Items .......................................................................................................................................... 26
PARTS ORDER LIST ................................................................................................................................................. 27
WARRANTY ............................................................................................................................................................... 28

5
Thank You for purchasing a Kenmore water heater. Properly
installed and maintained, it should give you years of trouble free
service. If you should decide that you want the new water heater
professionally installed by Sears call 1-800-4-MY-HOME®. They
will arrange for prompt, quality installation by Sears authorized
contractors.
Abbreviations Found In This Instruction Manual:
• UL - Underwriter’s Laboratories
• CSA - Canadian Standards Association
• ANSI - American National Standards Institute
• NFPA - National Fire Protection Association
• ASME - American Society of Mechanical Engineers
• GAMA - Gas Appliance Manufacturers Association
• EPACT - Energy Policy Act
• This gas-fired water heater is design certified by UL
Underwriter’s Laboratories under American National Standard/
CSA Standard for Gas Water Heaters ANSI Z21.10.3 • CSA
4.3 (current edition).
• Read the “Safety Precautions” section, page 3 of this manual
first and then the entire manual carefully. If you don’t follow
the safety rules, the water heater will not operate properly. It
could cause DEATH, SERIOUS BODILY INJURY AND/OR
PROPERTY DAMAGE.
This manual contains instructions for the installation, operation,
and maintenance of the gas-fired water heater. It also contains
warnings through out the manual that you must read and be
aware of. All warnings and all instructions are essential to the
proper operation of the water heater and your safety. Since
we cannot put everything on the first few pages, READ THE
ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR
OPERATE THE WATER HEATER.
• The installation must conform with these instructions and the
local code authority having jurisdiction. In the absence of local
codes, installations shall comply with the current edition of
The National Fuel Gas Code ANSI Z223.1/NFPA 54. This
publication is available from the Canadian Standards
Association, 8501 East Pleasant Valley Rd, Cleveland Ohio
44131, or The National Fire Protection Association, 1
Batterymarch Park, Quincy, MA 02269.
• If after reading this manual you have any questions or do not
understand any portion of the instructions, call the Sears
Service Center.
• Carefully plan the place where you are going to put the water
heater. Correct combustion, vent action, and vent pipe
installation are very important in preventing death from
possible carbon monoxide poisoning and fires. See
figures 1 and 8 through 14.
Examine the location to ensure the water heater complies
with the Facts to Consider About the Location section in this
manual.
• For California installation this water heater must be braced,
anchored, or strapped to avoid falling or moving during an
earthquake. See instructions for correct installation
procedures. Instructions may be obtained from your local
dealer, wholesaler, public utilities or California Office of the
State Architect, 400 P Street, Sacramento, CA 95814.
• Massachusetts Code requires this water heater to be installed
in accordance with Massachusetts 248-CMR 2.00: State
Plumbing Code and 248-CMR 5.00.
• Complies with SCAQMD rule #1146.2 and districts having
equivalent NOx requirements.
CUSTOMER RESPONSIBILITIES
PRODUCT SPECIFICATIONS
RECORECO
RECORECO
RECOVERVER
VERVER
VERYY
YY
YMINIMUMMINIMUM
MINIMUMMINIMUM
MINIMUM DIMENSIONSDIMENSIONS
DIMENSIONSDIMENSIONS
DIMENSIONS
TT
TT
TANKANK
ANKANK
ANK TYPETYPE
TYPETYPE
TYPE RARA
RARA
RATE GTE G
TE GTE G
TE GALAL
ALAL
ALSS
SS
S..
..
.VENT PIPEVENT PIPE
VENT PIPEVENT PIPE
VENT PIPE DIAMETERDIAMETER
DIAMETERDIAMETER
DIAMETER IN INCHES (mm)IN INCHES (mm)
IN INCHES (mm)IN INCHES (mm)
IN INCHES (mm)
MODELMODEL
MODELMODEL
MODEL CAPCAP
CAPCAP
CAPAA
AA
ACITYCITY
CITYCITY
CITY OFOF
OFOF
OF BTUBTU
BTUBTU
BTU PER HOURPER HOUR
PER HOURPER HOUR
PER HOUR INCHESINCHES
INCHESINCHES
INCHES INCHESINCHES
INCHESINCHES
INCHES HEIGHT THEIGHT T
HEIGHT THEIGHT T
HEIGHT TOO
OO
O
NUMBERNUMBER
NUMBERNUMBER
NUMBER IN GIN G
IN GIN G
IN GALAL
ALAL
ALS (LS (L
S (LS (L
S (LTRS)TRS)
TRS)TRS)
TRS) GG
GG
GASAS
ASAS
AS RARA
RARA
RATETE
TETE
TE @ 100°F RISE@ 100°F RISE
@ 100°F RISE@ 100°F RISE
@ 100°F RISE (mm)(mm)
(mm)(mm)
(mm) (mm)(mm)
(mm)(mm)
(mm) JJ
JJ
JAA
AA
ACKET TCKET T
CKET TCKET T
CKET TOO
OO
OP
153.331760 74 (280) NATURAL 75,100 72.8 4" (102) 26.38" (670) 57" (1,448)
153.331770HA 74 (280) NATURAL 75,100 72.8 4" (102) 26.38" (670) 57" (1,448)

6
MATERIALS AND BASIC TOOLS NEEDED
Materials Needed
To simplify the installation Sears has available the installation parts shown below. You may or may not need all of these materials,
depending on your type of installation.
EXPANSION TANKS FOR THERMAL EXPANSION
CONDITIONS AVAILABLE IN 2 GALLONS
(7.6 LITERS) AND 5 GALLONS (18.9 LITERS)
CAPACITY THROUGH LOCAL SEARS STORE OR
SERVICE CENTER
FLEXIBLE WATER HEATER GAS
CONNECTOR WITH FITTINGS
DRAIN PANS AVAILABLE IN 20” (508 mm)
DIAMETER FOR WATER HEATERS
HAVING A DIAMETER 18” (457 mm) OR
LESS, 24” (610mm) DIAMETER FOR
WATER HEATERS HAVING A DIAMETER
22” (559 mm) OR LESS AND AVAILABLE
IN 28” (711 mm) DIAMETER FOR WATER
HEATERS HAVING A DIAMETER 26” (660
mm) OR LESS
Basic Tools
You may or may not need all these tools, depending on your
type of installation. These tools can be purchased at your local
Sears Store.
• Pipe Wrenches (2) 14” (356 mm)
• Screwdriver
• Tin Snips
• 6’ (1.82 m) Tape or Folding Ruler
• Garden Hose
• Drill
• Pipe Dope or Teflon Tape
Additional Tools Needed
When Sweat Soldering
• Tubing Cutters or Hacksaw
• Propane Tank
• Soft Solder
• Solder Flux
• Emery Cloth
• Wire Brushes
SLOT-HEAD SCREWDRIVER
PHILLIPS SCREWDRIVER
TIN SNIPS
PIPE WRENCH
PIPE DOPE
(SQUEEZE TUBE)
USE FOR WATER AND GAS
CONNECTIONS
DRILL
GARDEN HOSE 6 FOOT TAPE
ROLL OF TEFLON
TAPE (USE ONLY ON
WATER HEATER
CONNECTIONS)
HACKSAW
3/4” (19 mm) WIRE BRUSH
1/2” (13 mm) WIRE BRUSH
SOLDER
FLUX
ROLL OF LEAD-FREE
SOFT SOLDER
TUBING CUTTER
PROPANE
TORCH
ROLL OF
EMERY CLOTH

7
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe
B Draft Hood
C Anode
D Hot Water Outlet
E Outlet
F Water Connections
G Gas Supply
H Manual Gas Shut-off Valve
* INSTALL IN
ACCORDANCE
WITH LOCAL CODES.
* DRIP LEG AS REQUIRED
BY LOCAL CODES.
FIGURE 1.
I Ground Joint Union
J Drip Leg (Sediment Trap)
K Inner Door
L Outer door
M Union
N Inlet Water Shut-off Valve
O Cold Water Inlet
P Inlet Dip Tube
Q Temperature-Pressure Relief Valve
R Rating Plate
S Flue Baffle(s)
T Thermostat
U Drain Valve
V Pilot and Main Burner
W Flue
X Drain Pan
(V) PILOT & MAIN BURNER
* ALL PIPING MATERIALS TO BE
SUPPLIED BY CUSTOMERS.
TO VENT TERMINATION
ON ROOF
(T) THERMOSTAT
**CLOSED WATER SYSTEMS
ARE THOSE WITH BACK FLOW
PREVENTION DEVICES INSTALLED
IN THE INLET WATER SERVICE LINE.

8
INSTALLATION INSTRUCTIONS
1. Turn “OFF” the gas supply to the
water heater.
If the main gas line Shut-off valve
serving all gas appliances is used,
also shut “OFF” the gas at each
appliance. Leave all gas
appliances shut “OFF” until the
water heater installation is
completed, see Figures 2 and 3.
2. Turn “OFF” the water supply to the
water heater at the water shut off
valve or water meter. Some
installations require that the water
be turned off to the entire house,
see Figures 2 and 4.
FIGURE 2.
Removing the Old Water Heater
FIGURE 3.
FIGURE 4.
3. Check again to make sure the gas supply is “OFF” to the
water heater. Then disconnect the gas supply connection from
the gas control valve.
4. Attach a hose to the water heater
drain valve and put the other end
in a floor drain or outdoors. Open
the water heater drain valve. Open
a nearby hot water faucet which will
relieve pressure in the water heater
and speed draining. The water
passing out of the drain valve may
be extremely hot. To avoid being
scalded, make sure all connections
are tight and that the water flow is
directed away from any person, see
Figures 2 and 5. FIGURE 5.
5. Disconnect the vent pipe from the draft hood where it connects
to the water heater. In most installations the vent pipe can
be lifted off after any screw or other attached devices are
removed. Dispose of the draft hood. The new water heater
has a draft hood which must be used for proper operation.
6. If you have copper piping to the water heater, the two copper
water pipes can be cut with a hacksaw approximately four
inches away from where they connect to the water heater,
see Figure 6. This will avoid cutting off pipes too short.
Additional cuts can be made later if necessary. Disconnect
the temperature-pressure relief valve drain line. When the
water heater is drained, disconnect the hose from the drain
valve. Close the drain valve. The water heater is now
completely disconnected and ready to be removed.
FIGURE 6.
If you have galvanized pipes to the water heater, loosen the
two galvanized pipes with a pipe wrench at the union in each
line. Also disconnect the piping remaining to the water heater,
see Figure 7. These pieces should be saved since they may
be needed when reconnecting the new water heater.
Disconnect the temperature-pressure relief valve drain line.
When the water heater is drained, disconnect the hose from
the drain valve. Close the drain valve. The water heater is
now completely disconnected and ready to be removed.
Mineral buildup or sediment may have accumulated in the
old water heater. This causes the water heater to be much
heavier than normal and this residue, if spilled out, could cause
staining.
FIGURE 7.

9
Facts to Consider About the Location
Carefully choose an indoor location for the new water heater,
because the placement is a very important consideration for the
safety of the occupants in the building and for the most
economical use of the appliance. This water heater is not for
use in manufactured (mobile) homes or outdoor installation.
Whether replacing an old water heater or putting the water heater
in a new location, the following critical points must be observed:
• Select a location indoors as close as practical to the gas vent
or chimney to which the water heater vent is going to be
connected, and as centralized with the water piping system
as possible.
• Selected location must provide adequate clearances for
servicing and proper operation of the water heater.
Installation of the water heater must be accomplished in such a
manner that if the tank or any connections should leak, the flow
will not cause damage to the structure. For this reason, it is not
advisable to install the water heater in an attic or upper floor.
When such locations cannot be avoided, a suitable drain pan
should be installed under the water heater. Drain pans are
available at your local Sears or hardware store. Such a drain
pan must have a minimum length and width of at least 2 inches
(51 mm) greater that the water heater dimensions and must be
piped to an adequate drain. The pan must not restrict combustion
air flow.
Water heater life depends upon water quality, water pressure
and the environment in which the water heater is installed. Water
heaters are sometimes installed in locations where leakage may
result in property damage, even with the use of a drain pan piped
to a drain. However, unanticipated damage can be reduced or
prevented by a leak detector or water shut-off device used in
conjunction with a piped drain pan. These devices are available
from some plumbing supply wholesalers and retailers, and detect
and react to leakage in various ways:
• Sensors mounted in the drain pan that trigger an alarm or turn
off the incoming water to the water heater when leakage is
detected.
• Sensors mounted in the drain pan that turn off the water supply
to the entire home when water is detected in the drain pan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water pipes
connected to the water heater.
• Devices that will turn off the gas supply to a gas water heater
while at the same time shutting off its water supply.
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS
(VAPORS) ARE LIKELY TO BE PRESENT OR STORED
(GARAGES, STORAGE AND UTILITY AREAS, ETC.):
Flammable liquids (such as gasoline, solvents, propane [LP or
butane, etc.] and other substances such as adhesives, etc.) emit
flammable vapors which can be ignited by a gas water heater’s
pilot light or main burner. The resulting flashback and fire can
cause death or serious burns to anyone in the area, as well as
property damage. If installation in such areas is your only option,
then the installation must be accomplished in a way that the pilot
flame and main burner flame are elevated from the floor at least
18 inches. While this may reduce the chances of flammable
vapors, from a floor spill being ignited, gasoline and other
flammable substances should never be stored or used in the
same room or area containing a gas water heater or other open
flame or spark producing appliance. NOTE: Flammable vapors
may be drawn by air currents from other areas of the structure to
the appliance.
Also, the water heater must be located and/or protected so it is
not subject to physical damage by a moving vehicle.

10
This water heater must not be installed directly on carpeting.
Carpeting must be protected by metal or wood panel beneath
the appliance extending beyond the full width and depth of the
appliance by at least 3 inches (76.2 mm) in any direction, or if
the appliance is installed in an alcove or closet, the entire floor
must be covered by the panel. Failure to heed this warning may
result in a fire hazard.
Minimum clearances between the water heater and
combustible construction are 0 inch at the sides and rear,
4 inches (102 mm) at the front, and 6 inches (153 mm) from
the vent pipe, see Figure 8. Clearance from the top of the
jacket is 12 inches (305 mm) on most models. Note that a
lesser dimension may be allowed on some models, refer to
the label attached adjacent to the gas control valve on the
water heater.
FIGURE 8.
A gas water heater cannot operate properly without the correct
amount of air for combustion, see Figure 9. Do not install in a
confined area such as a closet, unless you provide air as shown
in the Combustion Air and Ventilation for Appliances Located in
Confined Spaces section. Never obstruct the flow of ventilation
air. If you have any doubts or questions at all, call your gas
supplier. Failure to provide the proper amount of combustion
air can result in a fire or explosion and cause death, serious
bodily injury, or property damage.
FIGURE 9.
If this water heater will be used in beauty shops, barber shops,
cleaning establishments, or self-service laundries with dry
cleaning equipment, it is imperative that the water heater or water
heaters be installed so that combustion and ventilation air be
taken from outside these areas.
Propellants of aerosol sprays and volatile compounds, (cleaners,
chlorine based chemicals, refrigerants, etc.) in addition to being
highly flammable in many cases, will also change to corrosive
hydrochloric acid when exposed to the combustion products of
the water heater. The results can be hazardous, and also cause
product failure.
Insulation Blankets
Insulation blankets available to the general public for external
use on gas water heaters are not necessary with Kenmore
products. The purpose of an insulation blanket is to reduce the
standby heat loss encountered with storage tank heaters. Your
Kenmore water heater meets or exceeds the EPACT standards
with respect to insulation and standby loss requirements, making
an insulation blanket unnecessary.
WARNING
Should you choose to apply an insulation blanket to this heater,
you should follow these instructions (See Figure 1 for
identification of components mentioned below). Failure to follow
these instructions can restrict the air flow required for proper
combustion, potentially resulting in fire, asphyxiation, serious
personal injury or death.
•Do not apply insulation to the top of the water heater, as this
will interfere with safe operation of the draft hood.
•Do not cover the outer door, thermostat or temperature &
pressure relief valve.
•Do not allow insulation to come within 2” (50.8 mm) of the
floor to prevent blockage of combustion air flow to the burner.

11
•Do not cover the instruction manual. Keep it on the side of
the water heater or nearby for future reference.
•Do obtain new warning and instruction labels from Sears for
placement on the blanket directly over the existing labels.
•Do inspect the insulation blanket frequently to make certain
it does not sag, thereby obstructing combustion air flow.
Combustion Air and Ventilation for
Appliances Located in Unconfined Spaces
UNCONFINED SPACE is space whose volume is not less than
50 cubic feet per 1,000 Btu per hour (4.8 m3per kW) of the
aggregate input rating of all appliances installed in that space.
Rooms communicating directly with the space in which the
appliances are installed, through openings not furnished with
doors, are considered a part of the unconfined space.
In unconfined spaces in buildings, infiltration may be adequate
to provide air for combustion, ventilation and dilution of flue
gases. However, in buildings of tight construction (for example,
weather stripping, heavily insulated, caulked, vapor barrier, etc.),
additional air may need to be provided using the methods
described in Combustion Air and Ventilation for Appliances
Located in Confined Spaces.
Combustion Air and Ventilation for
Appliances Located in Confined Spaces
CONFINED SPACE is a space whose volume is less than
50 cubic feet per 1,000 Btu per hour (4.8 m3per kW) of the
aggregate input rating of all appliances installed in that space.
A. ALL AIR FROM INSIDE BUILDINGS:
(See Figure 9 and Figure 10)
The confined space shall be provided with two permanent
openings communicating directly with an additional room(s)
of sufficient volume so that the combined volume of all spaces
meets the criteria for an unconfined space. The total input of
all gas utilization equipment installed in the combined space
shall be considered in making this determination. Each
opening shall have a minimum free area of one square inch
per 1,000 Btu per hour (22 cm2/kW) of the total input rating of
all gas utilization equipment in the confined space, but not
less than 100 square inches (645 cm2). One opening shall
commence within 12 inches (30 cm) of the top and one
commencing within 12 inches (30 cm) of the bottom of the
enclosures.
FIGURE 10.
B. ALL AIR FROM OUTDOORS: (See Figures 9, 11,12 and 13)
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (30 cm) of the top
and one commencing within 12 inches (30 cm) from the bottom
of the enclosure. The openings shall communicate directly, or
by ducts, with the outdoors or spaces (crawl or attic) that freely
communicate with the outdoors.
FIGURE 11.
• When directly communicating with the outdoors, each opening
shall have a minimum free area of 1 square inch per 4,000 Btu per
hour (5.5 cm2/kW) of total input rating of all equipment in the
enclosure, see Figure 12.
FIGURE 12.
• When communicating with the outdoors through vertical
ducts, each opening shall have a minimum free area of
1 square inch per 4,000 BTU per hour (5.5 cm2/kW) of total
input rating of all equipment in the enclosure, see
Figure 12 on page 11.
• When communicating with the outdoors through horizontal
ducts, each opening shall have a minimum free area of 1
square inch per 2,000 BTU per hour (11 cm2/kW) of total
input rating of all equipment in the enclosure, see
Figure 14.
• Alternatively a single permanent opening may be used when
communicating directly with the outdoors, or with spaces that
freely communicate with the outdoors. The opening shall have
a minimum free area of 1 square inch per 3,000 BTU per
hour (8.3 cm2/kW) of total input rating of all equipment in
enclosure. See Figure 13.

12
FIGURE 13
• When ducts are used, they shall be of the same cross-
sectional area as the free area of the openings to which
they connect. The minimum short side dimension of
rectangular air ducts shall not be less than 3 inches (76.2
mm), see Figure 14.
FIGURE 14.
• Louvers and Grilles: In calculating free area, consideration
shall be given to the blocking effect of louvers, grilles or
screens protecting openings. Screens used shall not be
smaller than 1/4 inch (6.4 mm) mesh. If the free area
through a design of louver or grille is known, it should be
used in calculating the size opening required to provide
the free area specified. If the design and free area is not
known, it may be assumed that wood louvers will be 20-25
percent free area and metal louvers and grilles will have
60-75 percent free area. Louvers and grilles shall be fixed
in the open position or interlocked with the equipment so
that they are opened automatically during equipment
operation.
• Special Conditions Created by Mechanical Exhausting or
Fireplaces: operation of exhaust fans, ventilation systems,
clothes dryers or fireplaces may create conditions
requiring special attention to avoid unsatisfactory
operation of installed gas utilization equipment.
Water Piping
HOTTER WATER CAN SCALD:
Water heaters are intended to produce hot water. Water
heated to a temperature which will satisfy space heating,
clothes washing, dish washing, cleaning and other
sanitizing needs can scald and permanently injure you upon
contact. Some people are more likely to be permanently
injured by hot water than others. These include the elderly,
children, the infirm, or physically/mentally handicapped. If
anyone using hot water in your home fits into one of these
groups or if there is a local code or state law requiring a
certain temperature water at the hot water tap, then you
must take special precautions. In addition to using the
lowest possible temperature setting that satisfies your hot
water needs, a means such as a *mixing valve, should be
used at the hot water taps used by these people or at the
water heater. Mixing valves are available at plumbing supply
or hardware stores, see Figure 15 below. Valves for
reducing point of use temperature by mixing cold and hot
water are also available. Follow manufacturer’s instructions
for installation of the valves. Before changing the factory
setting on the thermostat, read the Temperature Regulation
section in this manual.
FIGURE 15.

13
This water heater shall not be connected to any heating
systems or component(s) used with a non-potable water
heating appliance.
All piping components connected to this unit for space
heating applications shall be suitable for use with
potable water.
Toxic chemicals, such as those used for boiler treatment shall
not be introduced into this system.
Water supply systems may, because of such events as high
line pressure, frequent cut-offs or the effects of water
hammer among others, have installed devices such as
pressure reducing valves, check valves, back flow
preventers, etc. to control these types of problems. When
these devices are not equipped with an internal by-pass,
and no other measures are taken, the devices cause the
water system to be closed. As water is heated, it expands
(thermal expansion) and closed systems do not allow for
the expansion of heated water.
The water within the water heater tank expands as it is heated
and increases the pressure of the water system. If the
relieving point of the water heater’s temperature-pressure
relief valve is reached, the valve will relieve the excess
pressure. The temperature-pressure relief valve is not
intended for the constant relief of thermal expansion. This
is an unacceptable condition and must be corrected. It is
recommended that any devices installed which could create
a closed system have a by-pass and/or the system have an
expansion tank to relieve the pressure built by thermal
expansion in the water system. Refer to the Thermal
Expansion section under Troubleshooting Guide or contact
local plumbing authority or local Sears Service Center on how
to control this situation.
NOTE: To protect against untimely corrosion of hot and cold
water fittings, it is strongly recommended that di-electric
unions or couplings be installed on this water heater when
connected to copper pipe.
Figure 16 shows the typical attachment of the water piping to
the water heater. The 74-gallon model water heater is
equipped with 1” NPT water connections.
TYPICAL INSTALLATION
FIGURE 16.
NOTE: If using copper tubing, solder tubing to an adapter
before attaching the adapter to the water connections.
Do not solder the water lines directly to the water
connections on the tank. It will harm the dip tube and
damage the tank.
• Look at the top cover of the water heater. The water outlet
is marked “HOT”. Put two or three turns of teflon tape
around the exposed end of the NPT threaded nipple.
Connect the hot water pipe to the hot water outlet on the
water heater. Please note that adapters may be needed to
match existing piping.
• Look at the top of the water heater. The cold water inlet
is marked “COLD”. Put two or three turns of teflon tape
around the exposed end of the NPT threaded nipple.
Connect the cold water pipe to the cold water inlet of the
water heater. Please note that adapters may be needed
to match existing piping.
NOTE: This water heater is super insulated to
minimize heat loss from the tank. Further reduction
in heat loss can be accomplished by insulating the
hot water lines from the water heater.

14
Temperature-Pressure Relief Valve
This heater is provided with a properly certified combination
temperature - pressure relief valve by the manufacturer.
The valve is certified by a nationally recognized testing
laboratory that maintains periodic inspection of production
of listed equipment of materials as meeting the
requirements for Relief Valves for Hot Water Supply
Systems, ANSI Z21.22, CSA 4.4 and the code
requirements of ASME.
If replaced, the valve must meet the requirements of local
codes, but not less than a combination temperature and
pressure relief valve certified as indicated in the above
paragraph.
The valve must be marked with a maximum set pressure not
to exceed the marked hydrostatic working pressure of the
water heater (150 psi = 1,035kPa) and a discharge capacity
not less than the water heater input rate as shown on the
model rating plate.
For safe operation of the water heater, the relief valve
must not be removed from its designated opening nor
plugged.
The temperature-pressure relief valve must be installed
directly into the fitting of the water heater designed for the
relief valve. Position the valve downward and provide tubing
so that any discharge will exit only within 6 inches (153 mm)
above, or at any distance below the structural floor, see
Figure 16. Be certain that no contact is made with any live
electrical part. The discharge opening must not be blocked
or reduced in size under any circumstances. Excessive
length, over 30 feet (9.14 m), or use of more than four elbows
can cause restriction and reduce the discharge capacity of
the valve.
FIGURE 17.
No valve or other obstruction is to be placed between the
relief valve and the tank. Do not connect tubing directly to
discharge drain unless a 6 inch air gap is provided. To
prevent bodily injury, hazard to life, or property damage, the
relief valve must be allowed to discharge water in quantities
should circumstances demand. If the discharge pipe is not
connected to a drain or other suitable means, the water flow
may cause property damage.
The Discharge Pipe:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
• Shall not be plugged or blocked.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both
the temperature-pressure relief valve, and the discharge pipe.
• Shall terminate at an adequate drain.
• Shall not have any valve between the relief valve and tank.

15
The temperature-pressure relief valve must be manually
operated at least once a year. Caution should be taken to
ensure that (1) no one is in front of or around the outlet of
the temperature-pressure relief valve discharge line, and
(2) the water manually discharged will not cause any bodily
injury or property damage because the water may be
extremely hot.
If after manually operating the valve, it fails to completely
reset and continues to release water, immediately close the
cold water inlet to the water heater, follow the draining
instructions, and replace the temperature-pressure relief valve
with a new one.
Filling the Water Heater
Never use this water heater unless it is completely full of water.
To prevent damage to the tank, the tank must be filled with water.
Water must flow from the hot water faucet before turning “ON”
gas to the water heater.
To fill the water heater with water:
• Close the water heater drain valve by turning the handle to
the right (clockwise). The drain valve is on the lower front of
the water heater.
• Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open
when the water heater is in use.
• To insure complete filling of the tank, allow air to exit by
opening the nearest hot water faucet. Allow water to run
until a constant flow is obtained. This will let air out of the
water heater and the piping.
• Check all water piping and connections for leaks. Repair as
needed.
Venting
VENT DAMPERS - Any vent damper, whether it is operated
thermally or otherwise must be removed if its use inhibits proper
drafting of the water heater.
Thermally Operated Vent Dampers: This gas-fired water
heater has a thermal efficiency at or above 80% which may
produce a relatively low flue gas temperature. Such
temperatures may not be high enough to properly open thermally
operated vent dampers. This would cause spillage of the flue
gases and may cause carbon monoxide poisoning.
Vent dampers must bear evidence of certification as complying
with the current edition of the American National Standard
ANSI Z21.66/CGA 6.14, cover electrically and mechanically
actuated vent dampers). Before installation of any vent damper,
consult your local Sears Service Center or the local gas supplier
for further information.
To insure proper venting of this gas-fired water heater, the correct
vent pipe diameter must be utilized. Any additions or deletions
of other gas appliances on a common vent with this water heater
may adversely affect the operation of the water heater. Consult
your gas supplier if any such changes are planned.
For proper venting in certain installations, a larger diameter vent
pipe may be necessary. Consult your local Sears Service Center
or gas supplier to aid you in determining the proper venting for
your water heater from the vent tables in the current edition of
the National Fuel Gas Code ANSI Z223.1/NFPA 54.
Periodically check the venting system for signs of obstruction or
deterioration and replace if needed.
The combustion and ventilation air flow must not be obstructed.
The water heater with draft hood installed must be connected to
a chimney or listed vent pipe system, which terminates to the
outdoors. Never operate the water heater unless it is vented to
the outdoors and has adequate air supply to avoid risks of
improper operation, explosion or asphyxiation.

16
• For proper draft hood attachment, the draft hood legs may
be angled slightly inward.
• Place the draft hood legs in the receiving holes on the top of
the water heater. The legs will snap in the holes to give a
tight fit. Secure the legs of the draft hood with the supplied
draft hood brackets.
• Place the vent pipe over the draft hood. With the vent pipe in
position, drill a small hole through both the vent pipe and
draft hood. Secure them together with a sheet metal screw,
see Figure 18.
FIGURE 18.
Obstructed or deteriorated vent systems may present serious
health risk or asphyxiation.
The vent pipe from the water heater must be no less than the
diameter of the draft hood outlet on the water heater and must
slope upward at least 1/4 inch per linear foot (21 mm per meter),
see Figure 19.
FIGURE 19.
All vent gases must be completely vented to the outdoors of the
structure (dwelling). Install only the draft hood provided with the
new water heater and no other draft hood.
Vent pipes must be secured at each joint with sheet metal screws.
There must be a minimum of 6 inches (153 mm) clearance
between single wall vent pipe and any combustible material.
Fill and seal any clearance between single wall vent pipe and
combustible material with mortar mix, cement, or other
noncombustible substance. For other than single wall, follow
vent pipe manufacturer’s clearance specifications. To insure a
tight fit of the vent pipe in a brick chimney, seal around the vent
pipe with mortar mix cement.
Failure to have required clearances between vent piping and
combustible material will result in a fire hazard.
Be sure vent pipe is properly connected to prevent escape of
dangerous flue gases which could cause deadly asphyxiation.
Chemical vapor corrosion of the flue and vent system may
occur if air for combustion contains certain chemical vapors.
Spray can propellants, cleaning solvents, refrigerator and air
conditioner refrigerants, swimming pool chemicals, calcium
and sodium chloride, waxes, bleach and process chemicals
are typical compounds which are potentially corrosive.
Gas Piping
Make sure the gas supplied is the same type listed on the model
rating plate. The inlet gas pressure must not exceed
14 inch water column (3.5kPa) for natural gas. The minimum
inlet gas pressure listed on the rating plate is for the purpose of
input adjustment. If the gas control valve is subjected to
pressures exceeding 1/2 pound per square inch (3.5kPa), the
damage to the gas control valve could result in a fire or explosion
from leaking gas.
If the main gas line shut-off serving all gas appliances is used, also
turn “OFF” the gas at each appliance. Leave all gas appliances
shut “OFF” until the water heater installation is complete.
A gas line of sufficient size must be run to the water heater.
Consult the current edition of National Fuel Gas Code ANSI
Z223.1/NFPA 54 and your gas supplier concerning pipe size.
There must be:

17
• A readily accessible manual shut off valve in the gas supply
line serving the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to help
prevent dirt and foreign materials from entering the gas control valve.
• A flexible gas connector or a ground joint union between the
shut off valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the
water heater. Use a soapy water solution, not a match or open
flame. Rinse off soapy solution and wipe dry.
The minimum inlet gas pressure shown on the rating plate is
that which will permit firing at the rated input.
If a standard model is installed above 2,000 feet (610 m) the
input rating should be reduced at the rate of 4 percent for each
1,000 feet (305 m ) above sea level which requires replacement
of the burner orifice in accordance with National Fuel Gas Code
ANSI Z223.1/NFPA 54. Contact your local Sears Service
Center or local gas supplier for further information.
Failure to replace the standard orifice with a high altitude
orifice when installed at elevations above 2,000 feet (610 m)
could result in improper and inefficient operation of the
appliance, producing carbon monoxide gas in excess of safe
limits, which could result in serious injury or death. Contact
your local Sears Service Center or local gas supplier for any
specific changes which may be required in your area.
The appliance and its gas connection must be leak tested before
placing the appliance in operation.
The appliance and its individual shut-off valve shall be disconnected
from the gas supply piping system during any pressure testing of
that system at test pressures in excess of 1/2 pound per square
inch (3.5 kPa). It shall be isolated from the gas supply piping system
by closing its individual manual shut-off valve during any pressure
testing of the gas supply piping system at test pressures equal to
or less than 1/2 pound per square inch (3.5 kPa).
Connecting the gas piping to the gas control valve of the water
heater can be accomplished by either of the two methods shown
in Figures 20 and 21.
Sediment Traps
Contaminants in the gas lines may cause improper operation of
the gas control valve that may result in fire or explosion. Before
attaching the gas line be sure that all gas pipe is clean on the
inside. To trap any dirt or foreign material in the gas supply line, a
drip leg (sometimes called a sediment trap) must be incorporated
in the piping. The drip leg must be readily accessible. Install in
accordance with the Gas Piping section. Refer to the current
edition of the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
A sediment trap shall be installed as close to the inlet of the water
heater as practical at the time of water heater installation. The
sediment trap shall be either a tee fitting with a capped nipple in the
bottom outlet or other device recognized as an effective sediment
trap. If a tee fitting is used, it shall be installed in conformance with
one of the methods of installation, shown in Figures 20 and 21.
FIGURE 20. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 21. GAS PIPING WITH ALL
BLACK IRON PIPE TO GAS CONTROL.

18

19
Never allow small children to use a hot water tap, or to draw
their own bath water. Never leave a child or handicapped person
unattended in a bathtub or shower.
NOTE: A water temperature range of 120°F-140°F (49°C-60°C)
is recommended by most residential dishwasher
manufacturers.
The thermostat of this water heater has been factory set at its
lowest position (PILOT LIGHTING). It is adjustable and must
be reset to the desired temperature setting to reduce the risk of
scald injury. The mark ( ) indicative of approximately 120°F
(49°C) is preferred starting point. Some states have a
requirement for a lower setting.
Turn the water temperature dial clockwise ( ) to decrease
the temperature, or counterclockwise ( ) to increase the
temperature.
Should overheating occur or the gas supply fail to shut off, turn
off the manual gas control valve to the appliance.
FIGURE 22.
Time to Produce 2nd & 3rd
Temperature Setting Degree Burns on Adult Skin
VERY HOT = approx. 160°F (71°C) About 1/2 second
C = approx. 150°F (66°C) About 1-1/2 seconds
B = approx. 140°F (60°C) Less than 5 seconds
A = approx. 130°F (54°C) About 30 seconds
= approx. 120°F (49°C) More than 5 minutes
LOW = approx. 80°F (27°C) ----------------
FIGURE 23.
Temperature Regulation
Due to the nature of the typical gas water heater, the water
temperature in certain situations may vary up to 30°F (16.7°
C) higher or lower at the point of use such as, bathtubs,
showers, sink, etc.
HOTTER WATER CAN SCALD: Water heaters are intended
to produce hot water. Water heated to a temperature which
will satisfy space heating, clothes washing, dish washing, and
other sanitizing needs can scald and permanently injure you
upon contact. Some people are more likely to be permanently
injured by hot water than others. These include the elderly,
children, the infirm, or physically/mentally handicapped. If
anyone using hot water in your home fits into one of these
groups or if there is a local code or state law requiring a certain
temperature water at the hot water tap, then you must take
special precautions. In addition to using the lowest possible
temperature setting that satisfies your hot water needs, a
means such as a mixing valve, should be used at the hot
water taps used by these people or at the water heater. Mixing
valves are available at plumbing supply or hardware stores.
Follow manufacturer’s instructions for installation of the
valves. Before changing the factory setting on the thermostat,
see Figures 22 and 23.

20
Tank (Sediment) Cleaning
Sediment build-up on the tank bottom may create varying amount
of noise, and if left in the tank will cause permanent tank failure.
In some water areas, you may not be able to drain all sediment
deposits by simply draining the tank. In these cases Mag-Erad
(part no. 23600) can be used to help remove the sediment
deposits. This may be ordered from the Sears Service Center.
For ordering, refer to the Parts Order List section.
Vent System Inspection
At least once a year a visual inspection should be made of the
venting system. You should look for:
• Obstructions which could cause improper venting. The
combustion and ventilation air flow must not be obstructed.
• Damage or deterioration which could cause improper venting
or leakage of combustion products.
• Rusted flakes around top of water heater.
Be sure the vent piping is properly connected to prevent escape
of dangerous flue gasses which could cause deadly
asphyxiation.
Obstructions and deteriorated vent systems may present serious
health risk or asphyxiation.
Chemical vapor corrosion of the flue and vent system may occur
if air for combustion contains certain chemical vapors. Spray
can propellants, cleaning solvents, refrigerator and air
conditioner refrigerants, swimming pool chemicals, calcium and
sodium chloride, waxes, bleach and process chemicals are
typical compounds which are potentially corrosive.
If when inspecting the vent system you find sooting or
deterioration, something is wrong. Call the local gas supplier to
correct the problem and clean or replace the flue and venting
before resuming operation of the water heater.
Burner Inspection
Flood damage to a water heater may not be readily visible or
immediately detectable. However, over a period of time a
flooded water heater will create dangerous conditions which
can cause DEATH, SERIOUS BODILY INJURY, OR
PROPERTY DAMAGE. Contact a Sears Service Center to
replace a flooded water heater. Do not attempt to repair the
unit! It must be replaced!
At least once a year a visual inspection should be made of the
main burner and pilot burner, see Figure 24.
You should check for sooting. Soot is not normal and will impair
proper combustion.
Soot build-up indicates a problem that requires correction before
further use. Turn “OFF” gas to water heater and
leave off until repairs are made, because failure to correct the
cause of the sooting can result in a fire causing death, serious
injury, or property damage.
FIGURE 24.
Burner Cleaning
In the event your burner needs cleaning, following these
instructions:
If inspection of the burner shows that cleaning is required, turn
the gas control knob clockwise ( ) to the “OFF” position,
depressing slightly.
NOTE: The knob cannot be turned from “PILOT” to “OFF”
unless knob is depressed slightly. DO NOT FORCE.
Loose deposits on or around the burner can be removed by
carefully using the hose of a vacuum cleaner inserted through
the access door of the water heater. If the burner needs to be
removed for additional cleaning, call the Sears Service Center
to remove and clean the burner and correct the problem that
required the burner to be cleaned.
SERVICE AND ADJUSTMENT