Kenmore 153.33204, 153.33206, 153.33205, 153.33207 User Manual
Owner’s Manual
THE ECONOMIZER™ 6
GAS WATER HEATER
POWER VENTED GAS MODELS
WITH HOT SURFACE IGNITION
FOR POTABLE WATER HEATING ONLY.
NOT SUITABLE FOR SPACE HEATING.
NOT FOR USE IN MOBILE HOMES.
MODEL NO.
153.332040 40 Gallon Nat
153.332050 50 Gallon Nat
153.332060 40 Gallon LP
153.332070 50 Gallon LP
• Safety Instructions
• Installation
• Operation
• Care and Maintenance
• Troubleshooting
• Parts List
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER.
C3 Technology® Gas Water Heaters meet
the new ANSI Z21.10.1 standard that deals
with the accidental or unintended ignition of
fl ammable vapors, such as those emitted
by gasoline.
ADVERTENCIA
Si no puede leer o entender el inglés y necesita el manual
instructivo y/o etiquetas en español puede obtenerlos llamando al
1-800-821-2017. NO TRATE DE INSTALAR O OPERAR ESTE
CALENTADOR DE AGUA si no entiende la información en las etiquetas
o en el manual instructivo. No hacer caso de esta advertencia podría
resultar en la MUERTE O GRAVES LESIONES CORPORALES.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A
1PRINTED IN THE U.S.A. 0308 www.sears.com PART NO. 185249-002
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.
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.
WARNING: 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 included in the Act.
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.
© Sears, Roebuck and Co.
2
SAFETY PRECAUTIONS
3
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE...................................................................................................................................... 2
SAFETY PRECAUTIONS ................................................................................................................................................................... 3
TABLE OF CONTENTS ...................................................................................................................................................................... 4
CUSTOMER RESPONSIBILITIES ..................................................................................................................................................... 5
PRODUCT SPECIFICATIONS ........................................................................................................................................................... 5
INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS ............................................................ 6
MATERIALS AND BASIC TOOLS NEEDED ...................................................................................................................................... 7
TYPICAL INSTALLATION ................................................................................................................................................................8-9
INSTALLATION INSTRUCTIONS .................................................................................................................................................9-22
Removing the Old Water Heater ................................................................................................................................................. 9
Facts to Consider About the Location ...................................................................................................................................10-11
Insulation Blankets .....................................................................................................................................................................11
Combustion Air and Ventilation for Appliances Located in Unconfi ned Spaces .........................................................................11
Combustion Air and Ventilation for Appliances Located in Confi ned Spaces ........................................................................11-12
Water Piping .........................................................................................................................................................................13-14
Temperature-Pressure Relief Valve ......................................................................................................................................14-15
Gas Piping ................................................................................................................................................................................. 15
Sediment Traps ......................................................................................................................................................................... 16
Filling the Water Heater ............................................................................................................................................................. 16
Blower Assembly Installation ................................................................................................................................................ 16-17
Vent Connections to Blower Assembly ...................................................................................................................................... 18
Venting and Installation ........................................................................................................................................................18-19
Condensation ............................................................................................................................................................................ 18
Maximum Vent Lengths ............................................................................................................................................................. 18
Venting ...................................................................................................................................................................................... 19
Vent Terminal Installation .....................................................................................................................................................19-20
Vertical Vent Through Roof ....................................................................................................................................................... 20
Vertical Vent Restrictions........................................................................................................................................................... 20
Vent Pipe Preparation .......................................................................................................................................................... 21-22
OPERATING INSTRUCTIONS ....................................................................................................................................................23-24
Lighting and Operating Label .................................................................................................................................................... 23
Temperature Regulation ............................................................................................................................................................ 24
FOR YOUR INFORMATION ............................................................................................................................................................. 25
Start Up Conditions ................................................................................................................................................................... 25
Operational Conditions .............................................................................................................................................................. 26
SERVICE AND ADJUSTMENT ...................................................................................................................................................26-28
Venting System Inspection ........................................................................................................................................................ 26
Burner Operation and Inspection ......................................................................................................................................... 26-27
Burner Cleaning ........................................................................................................................................................................ 27
Housekeeping ........................................................................................................................................................................... 27
Anode Rod Inspection ............................................................................................................................................................... 27
Temperature-Pressure Relief Valve Operation ..................................................................................................................... 27-28
Draining ..................................................................................................................................................................................... 28
Drain Valve Washer Replacement............................................................................................................................................. 28
Service ...................................................................................................................................................................................... 28
LEAKAGE CHECKPOINTS .............................................................................................................................................................. 29
TROUBLESHOOTING GUIDELINES ..........................................................................................................................................30-32
PARTS ORDER LIST ..............................................................................................................
WARRANTY ...................................................................................................................... ............................................................... 36
......................................................... 33
4
CUSTOMER RESPONSIBILITIES
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:
• CSA - Canadian Standards Association
• ANSI - American National Standards Institute
• NFPA - National Fire Protection Association
• ASME - American Society of Mechanical Engineers
• GAMA - Gas Appliance Manufacturer’s Association
• UL - Underwriters Laboratories Inc.
This gas-fi red water heater is listed by Underwriters Laboratories Inc.
under American National Standard/CSA Standard for Gas Water Heaters
ANSI Z21.10.1 • CSA 4.1 (current edition).
PREPARING FOR THE INSTALLATION
1. Read the “Safety Precautions” section, page 3 of this manual fi rst 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-fi red water heater. It also contains
warnings throughout 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 fi rst few pages, READ THE ENTIRE MANUAL
BEFORE ATTEMPTING TO INSTALL OR OPERATE THE WATER
HEATER.
2. 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 National Fuel Gas Code ANSI Z223.1/NFPA
54 and the National Electrical Code, NFPA 70. These publications
are available from The National Fire Protection Association, 1
Batterymarch Park, Quincy, MA 02269.
3. The water heater when installed must be grounded in accordance
with the local codes, or in the absence of local codes, the National
Electrical Code NFPA 70.
4. If after reading this manual you have any questions or do not
understand any portion of the instructions, call the local gas utility or
the Sears Service Center.
5. 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 fi res.
Examine the location to ensure the water heater complies with the
“Facts to Consider About the Location” section in this manual.
6. 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 California Offi ce of the State Architect, 400 P Street,
Sacramento, CA 95814.
7. 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. For more information see next page.
PRODUCT SPECIFICATIONS
TANK RECOVERY MINIMUM
CAPACITY INPUT RATE GALS. VENT PIPE DIAMETER DIMENSIONS IN
MODEL IN GALS. TYPE OF RATE PER HOUR INCHES INCHES INCHES (mm) HEIGHT
NUMBER (LTRS) GAS (Btu/hr) @ 90°F RISE (mm) (mm) TO JACKET TOP
153.332040 40 (151) NATURAL 40,000 44 2 (51) 18 1/2 (470) 55 (1,397)
153.332050 50 (189) NATURAL 40,000 44 2 (51) 20 (508) 56 3/4 (1,441)
153.332060 40 (151) PROPANE 40,000 44 2 (51) 18 1/2 (470) 55 (1,397)
153.332070 50 (189) PROPANE 40,000 44 2 (51) 20 (508) 56 3/4 (1,441)
5
INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed
in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by
the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above fi nished grade in the
area of the venting, including but not limited to decks and porches, the following requirements shall be satisfi ed:
INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas
fueled equipment, the installing plumber or gasfi tter shall observe that a hard wired carbon monoxide detector with an alarm
and battery back-up is installed on the fl oor level where the gas equipment is to be installed. In addition, the installing plumber
or gasfi tter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each
additional level of the dwelling, building or structure served by the sidewall horizontal vented gas fueled equipment. It shall
be the responsibility of the property owner to secure the services of qualifi ed licensed professionals for the installation of hard
wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired
carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent fl oor level.
In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall
have a period of thirty (30) days to comply with the above requirements provided that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required in accordance with the above
provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and CSA certifi ed.
SIGNAGE A metal or plastic identifi cation plate shall be permanently mounted to the exterior of the building at a minimum height
of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW.
KEEP CLEAR OF ALL OBSTRUCTIONS.”
INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance
with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of NFPA 54
as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the
dwelling, building, or structure used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED When the manufacturer of Product
Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with
the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall
include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When the manufacturer of
a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the fl ue gases,
but identifi es “special venting systems,” the following requirements shall be satisfi ed by the manufacturer:
1. The referenced “special venting system” instructions shall be included with the appliance or equipment installation
instructions; and
2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include a
parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or
equipment at the completion of the installation.
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.
WATER HEATER INSTALLATION KIT WITH
FLEXIBLE CONNECTORS FOR 3/4”
(19.05 mm) OR 1/2” (12.7 mm) THREADED
OR COPPER PLUMBING AND FLEXIBLE GAS
CONNECTOR WITH FITTINGS.
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 Tefl on Tape
SLOT-HEAD SCREWDRIVER
DRILL
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 AV AILABLE IN
28” (711 mm) DIAMETER FOR
WATER HEATERS HAVING A
DIAMETER 26” (660 mm) OR
LESS.
Additional Tools Needed
When Sweat Soldering
• Tubing Cutters or Hacksaw
• Propane Tank
• Soft Solder
• Solder Flux
• Emery Cloth
• Wire Brushes
TUBING CUTTER
PROPANE
TORCH
PHILLIPS SCREWDRIVER
ROLL OF TEFLON
TAPE (USE ONLY ON
WATER CONNECTIONS)
GARDEN HOSE
6 FOOT TAPE
TIN SNIPS
PIPE DOPE
(SQUEEZE TUBE)
USE FOR WATER AND GAS
CONNECTIONS
PIPE WRENCH
3/4” (19 mm) WIRE BRUSH
1/2” (13 mm) WIRE BRUSH
7
HACKSAW
EMERY CLOTH
ROLL OF LEAD-FREE
SOFT SOLDER
ROLL OF
SOLDER
FLUX
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe–Exhaust
B Vent Terminal
C Vent Adapter-Rubber Boot
D Blower Assembly
E Cold Water Inlet
F Inlet Water Shut-off Valve
G Union
H Inlet Dip Tube
J Anode**
* ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS.
** LOCATED UNDER THE BLOWER ASSEMBLY.
K Hot Water Outlet
L Outlet Receptacle (115 VAC)
M Temperature-Pressure Relief Valve
N Flue
O Flue Baffl e Assembly**
P Insulation
Q Control Harness
R Rating Plate
S Gas Supply
T Manual Gas Shut-off Valve
U Ground Joint Union
V Drip Leg (Sediment Trap)
W Drain Valve
X Gas Valve-Thermostat
Y Drain Pan
Z Air Intake Screen - Base Pan
AA Inner Door
B B Outer Door
CC HSI Burner Assembly
D D Air Intake Screen Blower Assembly
E E FV Sensor Assembly
NATURAL HOT SURFACE IGNITER & MAIN BURNER
HOT
SURFACE
IGNITOR
SENSOR
PROPANE HOT SURFACE IGNITER & MAIN BURNER
HOT
SURFACE
IGNITOR
*CAUTION: 115 VAC IN CONTROL HARNESS
AND INSIDE OUTER DOOR
GAS MODELS
WITH HOT SURFACE IGNITION
& 2”, 3” OR 4” PVC VENT CAPABILITY
SENSOR
TEMPERATURE INDICATORS
TEMPERATURE ADJUSTMENT BUTTONS
FIGURE 1.
8
INSTALLATION INSTRUCTIONS
Removing the Old Water Heater
4. Attach a hose to the water heater drain
valve and put the other end in a fl oor
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 fl ow is directed
away from any person, see Figures 2
and 5.
FIGURE 2.
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.
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.
FIGURE 3.
FIGURE 4.
5. Disconnect the vent pipe from the blower assembly where it connects
FIGURE 5.
to the water heater. In most installations the vent pipe can be lifted
off after any screw or other attached devices are removed. Make sure
existing vent complies with maximum and minimum vent lengths on
page 17.
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 temperaturepressure 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.
9
FIGURE 7.
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:
1. Select a location indoors as close as practical to the vent terminal or
location to which the water heater vent piping is going to be connected,
and as centralized with the water piping system as possible.
2. 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 fl ow will not cause
damage to the structure. For this reason, it is not advisable to install the
water heater in an attic or upper fl oor. When such locations cannot be
avoided, a suitable drain pan should be installed under the water heater.
Drain pans are available at your local hardware store. Such a drain pan
must have a minimum length and width of at least 2” (5.1 cm) greater
than the water heater dimensions and must be piped to an adequate
drain. The pan must not restrict combustion air fl ow.
FIGURE 8.
Also, the water heater must be located and/or protected so it is not subject
to physical damage by a moving vehicle.
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.
INSTALLA TIONS IN AREAS WHERE FLAMMABLE LIQUIDS (V APORS)
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 fl ammable vapors which can be ignited by a gas
water heater’s hot surface igniter or main burner. The resulting fl ashback
and fi re can cause death or serious burns to anyone in the area. This
water heater is equipped with a FV sensor for detecting the presence of
fl ammable vapors, see Figure 8. When the sensor detects those vapors,
the unit will shut down and not operate. Should this happen, please
refer to the troubleshooting guide on pages 29-30. Even though this
water heater is a fl ammable vapors ignition resistant water heater and
is designed to reduce the chances of fl ammable vapors being ignited,
gasoline and other fl ammable substances should never be stored or
used in the same vicinity or area containing a gas water heater or other
open fl ame or spark producing appliance.
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” (7.6 cm) in any direction, or if the appliance is installed in an alcove
or closet, the entire fl oor must be covered by the panel. Failure to heed
this warning may result in a fi re hazard.
Minimum clearances between the water heater and combustible
construction are 0 inch at the sides and rear, 5” (12.7 cm) from the front
10
and 12” (30.5 cm) from the top. (Standard clearance.) If clearances
stated on the heater differ from standard clearances, install water heater
according to clearances stated on the heater.
Adequate clearance for servicing this appliance should be considered
before installation, such as changing the anodes, etc.
A minimum clearance of 5” (12.7 cm) must be allowed for access
to replaceable parts such as the thermostats, drain valve and relief
valve.
When installing the heater, consideration must be given to proper location.
Location selected should be as close to the wall as practicable and as
centralized with the water piping system as possible.
FIGURE 9.
in many cases, will also react to form 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 are available to the general public for external use
on gas water heaters but 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 National Appliance Energy Conservation Act
standards with respect to insulation and standby loss requirements,
making an insulation blanket unnecessary.
A gas water heater cannot operate properly without the correct amount
of air for combustion. Do not install in a confi ned area such as a closet,
unless you provide air as shown in the “Facts to Consider About the
Location” section. Never obstruct the fl ow 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 fi re or explosion and
cause death, serious bodily injury, or property damage.
Should you choose to apply an insulation blanket to this heater, you
should follow these instructions (For identification of components
mentioned below, see Figure 1). Failure to follow these instructions can
restrict the air fl ow required for proper combustion, potentially resulting
in fi re, 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 blower assembly.
• Do not cover the outer door, thermostat or temperature & pressure
relief valve.
• Do not allow insulation to come within 2” (5.1 cm) of the fl oor to
prevent blockage of combustion air fl ow to the burner.
• 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 fl ow.
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 cubic meters per 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 unconfi ned space.
In unconfi ned spaces in buildings, infi ltration may be adequate to provide
air for combustion, ventilation and dilution of fl ue 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 V entilation
for Appliances Located in Confi ned Spaces.”
FIGURE 10.
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 fl ammable
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 cubic meters per kW) of the aggregate input
rating of all appliances installed in that space.
11
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