Bradford White M-I-MS40T6LX User manual

238-37281-00U REV 04/11
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
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.
WARNING: If the information in these instructions is
not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
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 Mobile Home 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
Drain Pan Installation.............................................................................9
Combustion Air Supply........................................................................10
Venting...................................................................................................11
Water Connections...............................................................................12
Gas Connections..................................................................................15
Gas Conversion Instructions..............................................................16
GENERAL OPERATION...............................................................................20
Lighting and Shutdown Instructions..................................................21
Burner Flame Check.............................................................................24
MAINTENANCE............................................................................................24
TYPICAL INSTALLATION............................................................................27
GAS FIRED MANUFACTURED HOME .......................................................28
PARTS LIST..................................................................................................28

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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.
DANGER
Do not store or use gasoline or other flammable, combustible, or
corrosive vapors and liquids in the vicinity of this or any other
appliance.
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 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 gases 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!

7
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 (Refer to drain pan installation section
for more information.). 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 the DSA Headquarters Office, 1102 Q Street, Suite 5100,
Sacramento, CA 95811.
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.

8
Installation continued-
Figure 1
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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Drain Pan Installation
for non-flammable vapor ignition resistant manufactured home water heaters
1. This section is intended for use with non-flammable vapor ignition resistant
manufactured home water heaters that will be installed in an application where
a drain pan is required.
2. After hole is cut in floor and underside sheathing, and before the water heater
is installed, prepare drain pan.
3. Locate and cut a 3-1/2” diameter hole in drain pan at 4-1/2” from center (see
Figure 2). This hole will be located at the front of the water heater upon final
installation.
4. Align drain pan hole with hole cut in floor and underside sheathing for air
intake.
5. Apply 4” diameter circle of silicone around bottom of air intake plate and
screws used to secure air intake to floor for proper water tight sealing (see
Figure 3).
6. Continue proper installation per this installation and operation manual and the
roof jack & air intake installation instructions provided with the roof jack kit. Be
sure to apply silicone around screws used to secure the water heater to the
floor through the drain pan for proper water tight sealing.
CAUTION
Silicone has a strong odor and should have adequate ventilation until
cured. Refer to the manufacturer’s instructions for adequate drying time.
Figure 2
Figure 3
Figure 4

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Combustion Air Supply
All combustion air must be supplied from outdoors by one of the following
installation methods and as illustrated in Figure 5. 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 5).