Bradford White 238-37281-00R Supplement

238-37281-00R REV 05/07
GAS WATER HEATER
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
For your family’s comfort, safety and convenience we
recommend water heaters be installed and serviced by a
plumbing professional.
MANUFACTURED HOME (MOBILE HOME)
CLOSED COMBUSTION (DIRECT VENTING)
INSTALLATION AND OPERATING
INSTRUCTION MANUAL
WARNING: If the information in these instructions is
not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors and liquids in the
vicinity of this or any other appliance.
A Spanish language version of these instructions is available by
contacting the company listed on the rating plate.
La versión espãnola de estas instrucciones se puede obtener al
escribirle a la fábrica cuyo nombre aparece en la placa de
especificaciones.

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CONGRATULATIONS!
You have just purchased one of the finest water heaters
on the market today!
This installation, operation and instruction manual will
explain in detail the installation and maintenance of your
new Direct Vent Gas Water Heater. We strongly
recommend that you contact a plumbing professional for
the installation of this water heater.
We require that you carefully read this manual, as well as
the enclosed warranty, and refer to it when questions
arise. If you have any specific questions concerning
your warranty, please consult the plumbing professional
from whom your water heater was purchased. For your
records we recommend that you write the model, serial
number and installation date of your water heater in the
maintenance section in the back of this manual.
This manual should be kept with the water heater.

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TABLE OF CONTENTS
Page
GENERAL INFORMATION............................................................ 4
INSTALLATION............................................................................. 5
Locating The Water Heater.................................................... 5
Minimum Clearances.............................................................. 7
Combustion Air Supply.......................................................... 8
Venting .................................................................................... 9
Water Connections................................................................. 10
Gas Connections.................................................................... 13
Gas Conversion Instructions ................................................ 14
GENERAL OPERATION................................................................ 16
Lighting and Shutdown Instructions.................................... 17
Thermostat Adjustment ......................................................... 18
Burner Flame Check............................................................... 19
MAINTENANCE............................................................................. 19
TYPICAL INSTALLATION............................................................. 22
PARTS LIST................................................................................... 23
BURNER ASSEMBLY DRAWING................................................. 24

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GENERAL INFORMATION
This water heater must be installed in accordance with The Federal
Manufactured Home Construction And Safety Standard (H.U.D. Title 24, Part
3280.707d2) or CAN/CSA Z240 MH series, mobile home. In the absence of
such a standard, the water heater should be installed in accordance with the
Standard For Mobile Homes (ANSI/NFPA NO. 501-B1977).
The warranty for this water heater is in effect only when the water heater is
installed, adjusted, and operated in accordance with these Installation and
Operating Instructions. The manufacturer will not be liable for any damage
resulting from alteration and/or failure to comply with these instructions.
This water heater is of the closed combustion type (direct venting) where all the
combustion air is supplied from the outdoors through the air intake and all
combusted gas products are vented directly to the outside by means of the roof
jack. No draft diverter (vent hood) is required for this water heater.
Underwriters Laboratories, Inc. has tested a representative sample of this water
heater design for its safety of operation. The UL listing of this water heater
includes the field installation of the following components: roof jack, air intake
tube, and heater tie down materials. These components for field installation
may have been shipped with this heater and must be installed according to
these instructions (see figure 1). No other components are approved for use
with this water heater.
This water heater has been designed and certified for the purpose of heating
potable water. The installation and use of this water heater for any purpose
other than the heating of potable water may cause damage to the water heater,
create a hazardous condition, and nullify the warranty.
Do not use this appliance if any part has been submerged in water. You should
contact the plumbing professional who installed the water heater to inspect the
appliance and to replace any part of the control system including the
combination gas control which has been submerged in water.
CAUTION
Incorrect operation of this appliance may create a hazard to life and
property and will nullify the warranty.
IMPORTANT
Before proceeding, please inspect the water heater and components for
possible damage. DO NOT install any damaged components. If damage
is evident then please contact the supplier where the water heater was
purchased or the manufacturer listed on the rating plate for replacement
parts.

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General Information continued-
This water heater has been manufactured for operation at altitudes from sea
level to 2000 feet (610m) (unless otherwise specified on the water heater).
For use of this appliance at an elevation greater than 2000 feet (610m), contact
the dealer or manufacturer listed on the rating plate for information on any
necessary modification. Uncorrected operation of this appliance may create a
hazard to life and property.
Make sure to check the rating plate and combination gas control on the water
heater to be certain that the type of gas being supplied corresponds with the
marking on the rating plate and combination gas control.
A sacrificial anode is used to extend tank life. The removal of this anode, for
any reason, will nullify the warranty. In areas where water is unusually active,
an odor may occur at the hot water faucet due to a reaction between the
sacrificial anode and the impurities in the water. If this should happen, an
alternative anode may be purchased from the supplier that installed this water
heater. This will minimize the odor while protecting the tank. Additionally, the
water heater should be flushed with appropriate dissolvers to eliminate any
bacteria.
INSTALLATION
Locating the Water Heater
This water heater MUST NOT be installed in any location where gasoline or
flammable vapors are likely to be present, unless the installation is such to
eliminate the probable ignition of gasoline or flammable vapors.
The location of this water heater is of the utmost importance. Before installing
this water heater, read the Installation section of these instructions. DO NOT
locate the water heater where water lines could be subjected to freezing
temperatures. Make sure the cold water pipes are not located directly
above the gas control so that condensate during humid weather does not
drip on the controls.
Do not store or use gasoline or other flammable, combustible, or
corrosive vapors and liquids in the vicinity of this or any other
appliance.
DANGER
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there must
be no materials stored against the water heater or vent-air intake system and proper
care must be taken to avoid unnecessary contact (especially by children) with the
water heater and vent-air intake components. UNDER NO CIRCUMSTANCES MAY
FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE
USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR
INTAKE SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD
REACH THE WATER HEATER OR VENT-AIR INTAKE SYSTEM.

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Installation (Locating The Water Heater) continued-
Water heater corrosion and component failure can be caused by the heating
and breakdown of airborne chemical vapors. Examples of some typical
compounds that are potentially corrosive are: spray can propellants, cleaning
solvents, refrigerator and air conditioning refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes and process chemicals. These
materials are corrosive at very low concentration levels with little or no odor to
reveal their presence. NOTE: DAMAGE TO THE WATER HEATER CAUSED
BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE
WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE
HAS OR WILL OCCUR. DO NOT STORE ANY POTENTIALLY CORROSIVE
COMPOUNDS IN THE VICINITY OF THE WATER HEATER.
For exact venting specifications, please consult the Venting section, located on
page 10, of these Installation and Operating Instructions. It is recommended
that a minimum clearance of 4 inches (10.2 cm) be provided on the side of the
water heater for servicing and maintenance of the combination temperature
and pressure relief valve.
WARNING
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT
CERTAIN OF THE FOLLOWING:
• Liquefied petroleum gases/propane gas and natural gas have an odorant
added by the gas supplier that aids in detection of the gas.
• Most people recognize this odor as a “sulfur” or “rotten egg” smell.
• Other conditions, such as “odorant fade” can cause the odorant to
diminish in intensity, or “fade”, and not be as readily detectable.
• If you have a diminished sense of smell, or are in any way unsure of the
presence of gas, immediately contact your gas supplier from a neighbor’s
telephone.
• Gas detectors are available. Contact your gas supplier or plumbing
professional for more information.
WARNING
Liquefied petroleum gases/propane gas are heavier than air and will remain at
floor level if there is a leak. Basements, crawl spaces, closets and areas below
ground level will serve as pockets for accumulation of leaking gas. Before
lighting, smell all around the appliance area for gas. Be sure to smell next to the
floor.
IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any telephone in your building.
• Immediately call your gas supplier from a neighbor’s telephone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!

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Installation (Locating The Water Heater) continued-
This water heater MUST be installed indoors out of the wind and weather.
This water heater must be located in an area where leakage of the tank, water
line connections, or the combination temperature and pressure relief valve will
not result in damage to the area adjacent to the water heater or to lower floors
of the structure. When such locations cannot be avoided, a suitable drain pan
must be installed under the water heater. The drain pan must have a minimum
length and width of at least 4 in. (10.2 cm) greater than the diameter of the
water heater and must not restrict proper combustion air flow to the water
heater. The drain pan, as described above, can be purchased from your
plumbing professional. The drain pan must be piped to an adequate drain.
The piping must be at least 3/4 inch (1.9 cm) in diameter and pitched for proper
drainage.
To comply with NSF requirements this water heater is to be:
a) Sealed to the floor with sealant, in a smooth and easily cleanable way,
or
b) Installed with an optional leg kit that includes legs and/or extensions
that provide a minimum clearance of 6” beneath the water heater.
Note: 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 Office of the State Architect, 400 P Street,
Sacramento, CA 95814.
Minimum Clearances
This installation shall allow access to the front of the water heater and
adequate clearance shall be provided for servicing and operating this water
heater. The water heater may be installed on either a combustible or non-
combustible floor. If the water heater is to be installed directly on carpeting, it
shall be installed on top of a metal or wood panel (or equivalent) extending
beyond the full width and depth of the appliance by at least 3 inches (7.6 cm) in
any direction or, if the appliance is to be installed in an alcove or closet, the
entire floor shall be covered by the panel.
WARNING
Failure to adhere to these installation and operating instructions may
create a hazard to life and property and will nullify the warranty.

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Installation continued-
Figure 1
Combustion Air Supply
All combustion air must be supplied from outdoors by one of the following
installation methods and as illustrated in Figure 2. The flow of combustion and
ventilating air must not be obstructed. Adequate air must be supplied for
combustion and ventilation. An insufficient supply of air will cause recirculation
of combustion products resulting in air contamination that may be hazardous to
life. Such a condition often will result in a yellow, luminous burner flame,
causing carboning or sooting of the combustion chamber, burners and flue
tubes with possible damage to the heater.
AIR INTAKE INSTALLATION - 3” (7.6cm) diameter telescoping air intake and
leg enclosure are required to supply fresh air to the water heater for
combustion (kit P/N 239-37025-01 for 30 gallon (113.5L) water heaters and
239-37025-02 for 40 gallon (151.4L) water heaters. Note: When a mobile
home is tightly skirted, an air inlet opening in the skirting must be
provided. The opening shall have a minimum free area of at least 9 in2
(22.9cm2). If the opening is screened or covered with a louver, the total
free area must be at least 9 in2(22.9cm2). The following steps must be
followed for proper installation of these air supply components:
(Refer to Figure 2).
IMPORTANT
The flow of combustion and ventilating air must not be obstructed.
Minimum Clearances From
Combustible Materials
A 0” (0cm)
B 0” (0cm)
C 3” (7.62cm)
D 78” (1.98mm)
VENT----

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Combustion air supply continued-
1. After selecting the proper location for the water heater, cut a 4” (10.2cm)
diameter hole through the floor and all other layers of flooring and
sheathing directly beneath the front center of the water heater.
2. Insert the air intake into the 4” (10.2cm) diameter hole and fasten to the
floor with the screws provided.
3. Adjust the air intake so the lower tube extends below the underside
sheathing and secure with the screws provided. THE BOTTOM OF THE
AIR INTAKE MUST BE AT LEAST 12” (30.5cm) ABOVE THE
GROUND LEVEL.
4. Seal the openings around the air intake and underside sheathing to resist
the entrance of rodents.
5. Position the water heater so it is centered above the air intake. (Note:
The water heater should also be centered with the openings in the
roof and ceiling to allow for correct assembly of the roof jack to the
flue tube.)
The water heater is to be secured in place using the supplied sheet metal
strapping and screws. Fasten the base of the water heater to the floor using
the screws provided. The perforated metal strapping must be fastened to the
top of the water heater and to the adjacent walls with the screws provided.
(See Figure 2)
Venting
Make certain the flue baffle is in place and centered in flue tube. Cut a 7 1/4
inch (18.5cm) diameter hole in the ceiling and roof directly above the flue of the
water heater. Center the water heater beneath the 7 1/4 (18.5cm) inch
diameter holes in the roof and ceiling for proper alignment of the flue tube and
roof jack vent. Apply non-hardening mastic on the roof, around the previously
cut hole, to form a weather seal with the flashing of the gas vent roof jack
assembly. Note: Only the roof jacks listed in Figure 2 can be used on this
water heater. Insert the 3” (7.62 cm) vent connector extension (shipped
telescoped) into the gas vent roof jack assembly and down onto the flue pipe
extruding from the top of the water heater. Fasten the 3” (7.62 cm) vent
connector to the flue pipe using the 3” (7.62 cm) clamp provided. After all
connections are made, apply a bead of silicone (supplied with vent kit) to all
vent seams and connections above the flue pipe (some kits may contain
silicone bands to seal vent joints).
WARNING
The vent system must be installed properly. Failure to properly install the
vent system could result in property damage, personal injury, or death.

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Installation (Venting) continued-
Figure 2
Water Connections
NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE
MAIN WATER SUPPLY VALVE.
After shutting off the main water supply, open a faucet to relieve the water line
pressure to prevent any water from leaking out of the pipes while making the
water connections to the water heater. After the pressure has been relieved,
close the faucet. The COLD water inlet and HOT water outlet are identified on
the top of the water heater. The fittings at the cold water inlet and hot water
outlet are dielectric waterway fittings with 3/4” NPT male thread. Make the
proper plumbing connections between the water heater and the plumbing
system to the house. Install a shut-off valve in the cold water supply line.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples on top of the
water heater. Sweat the tubing to the adapter before fitting the adapter to the
water connections. It is imperative that heat is not applied to the nipples
containing a plastic liner.
WARNING
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED 3/4” X 3/4”
TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE
MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM
EXCESSIVE TEMPERATURE AND PRESSURES.