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.

2
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.

3
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

4
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.

5
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.

6
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----

9
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

10
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).

11
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 5)
Venting
Make certain the flue baffle is in place and centered in the 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 inch (18.5cm)
diameter hole 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 5 can be used on this
water heater. Insert the 3 inch (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 inch (7.62 cm) vent
connector to the flue pipe using the 3 inch (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.

12
Installation (Venting) continued-
Figure 5
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.
Cold water inlet
Drain Valve
Gas Conversion package
Floo
r
Ceiling
Roo
f
Enclosure
2" (5.1cm) REF
Fasten water heate
r
base to the floor with
screws provided.
Perforated straping (shipped
in carton) secure to enclosure
walls and to top of heater.
Roof flashing (secure pe
r
instructions supplied)
Hot water outlet
Silicone Bands
Temperature &
Pressure Relief Valve

13
Water connections continued-
If this water heater is installed in a closed water supply system, such as the one having a
back-flow preventer in the cold water supply, provisions shall be made to control thermal
expansion. DO NOT operate this water heater in a closed system without provisions for
controlling thermal expansion. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
After installation of the water lines, open the main water supply valve and fill the water
heater. While the water heater is filling, open several hot water faucets to allow air to
escape from the water system. When a steady stream of water flows through the
faucets, close them and check all water connections for possible leaks. NEVER
OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED
WITH WATER.
WARNING
For protection against excessive temperatures and pressure, install temperature
and pressure protective equipment required by local codes, but not less than a
combination temperature and pressure relief valve certified by a nationally
recognized testing laboratory that maintains periodic inspection of production of
listed equipment or materials as meeting the requirements of the Standard for
Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply
Systems, ANSI Z21.22 or the Standard CAN1-4.4. Temperature and Pressure
and the Standard CAN1-4.4, Temperature, Pressure, Temperature and
Pressure Relief Valves and Vacuum Relief Valves. The combination
temperature and pressure relief valve shall be marked with a maximum set
pressure not to exceed the maximum working pressure of the water heater. The
combination temperature and pressure relief valve shall also have an hourly
rated temperature steam BTU discharge capacity not less than the hourly rating
of the water heater.
Install the combination temperature and pressure relief valve into the opening
provided and marked for this purpose on the water heater.
Note: Some models may already be equipped or supplied with a combination
temperature and pressure relief valve. Verify that the combination temperature
and pressure relief valve complies with local codes. If the combination
temperature and pressure relief valve does not comply with local codes, replace
it with one that does. Follow the installation instructions above on this page.
Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within six (6) inches (15.2 cm)
above, or any distance below the structural floor and cannot contact any live
electrical part. The discharge line is to be installed to allow for complete
drainage of both the combination temperature and pressure relief valve and the
discharge line. The discharge opening must not be subjected to blockage or
freezing. DO NOT thread, plug or cap the discharge line. It is recommended
that a minimum clearance of four (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.
Do not place a valve between the combination temperature and pressure relief
valve and the tank.

14
Water Connections continued-
This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury. Certain
appliances such as dishwashers and automatic clothes washers may require
increased temperature water. By setting the thermostat on this water heater to
obtain the increased temperature water required by these appliances, the
potential for scald injury increases. To protect against injury, you should install
an ASSE approved mixing valve in the water system. This valve will reduce
point of discharge temperature by mixing cold and hot water in branch supply
lines. Such valves are available from the manufacturer of this water heater or a
local plumbing supplier. Please consult with a plumbing professional.
WARNING
Hydrogen gas can be produced in an operating water heater that has not had
water drawn from the tank for a long period of time (generally two weeks or
more). Hydrogen gas is extremely flammable. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open
for several minutes at the kitchen sink before you use any electrical appliance,
which is connected to the hot water system. If hydrogen is present, there will be
an unusual sound such as air escaping through the pipes as hot water begins to
flow. Do not smoke or have open flame near the faucet at the time it is open.
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
120°F (49°C) More than 5 minutes
125°F (52°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1½ seconds
155°F (68°C) About 1 second
can cause severe burns
are at highest risk of being
Children, disabled and elderly
instantly or death from scalds.
Water temperature over 125°F
Feel water before bathing or
before setting temperature
available.
showering.
Temperature limiting valves are
Review this instruction manual
at water heater.
scalded.

15
Gas Connections
The gas supply lines must meet all requirements of the National Fuel Gas Code
(ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code
(Latest Edition).
The minimum permissible gas supply pressure for the purpose of input adjustment
is one (1.0) inch (0.25 kPa) water column above the operating manifold pressure.
See the rating plate and gas valve for the manifold pressure and gas type. The
maximum permissible gas supply pressure is fourteen (14.0) inches (3.5 kPa) water
column for natural gas and liquefied petroleum gases/propane gas.
1. Connect this water heater only to the type of gas (Natural or Propane gas) as
shown on the rating plate. Use clean black iron pipe or equivalent material
approved by local codes and ordinances. (Dirt and scale from the pipe can
enter the gas valve and cause it to malfunction). The inlet gas line must have a
minimum length of three (3) inches (7.6 cm) drip leg (sediment trap) installed as
close to the water heater’s gas valve as possible. A ground joint union must be
installed as close to the water heater as possible in the gas supply line feeding
the water heater to permit servicing of the water heater. Compounds used on
the threaded joints of the gas piping must be resistant to the action of liquefied
petroleum gases/propane gas. DO NOT apply pipe dope to the gas valve inlet
and make certain that no pipe dope has become lodged in the inlet screen of
the gas valve. Extreme care must be taken to ensure no pipe dope enters the
gas valve. Avoid excessive torque when tightening the gas supply line to the
gas valve. Excessive torque may result in cracking of the gas valve housing
and could create a gas leak. When tightening gas supply line to L.P. control, it
is recommended to hold the inlet body of the control securely with an adequate
wrench. The suggested maximum torque is 31.5 ft. lbs. (4.4 kg-m).
2. This water heater and its gas connection must be leak tested before placing the
water heater in operation. Check for gas leaks with a soap and water solution
and a brush or a commercial leak detector fluid. NEVER USE A MATCH OR
OPEN FLAME FOR TESTING!
3. While checking for leaks care must be taken to prevent solution from
contacting the electrical connections at the control. If electrical connections at
the control become wet, they must be thoroughly dried before attempting to
operate the water heater.
WARNING
The manufacturer of this water heater will not be liable for any damage or
injury caused as a result of a cracked gas inlet as a result of excessive
torque.
CAUTION
The water heater and individual shutoff valve must be disconnected from the
gas supply piping system during any pressure testing of the system at test
pressures in excess of 1/2 psi (3.5 kPa). The water heater must be isolated
from the gas supply piping system by closing its manual shutoff valve during any
pressure testing of the gas supply system at test pressures equal to or less than
1/2 psi (3.5 kPa). The supply line must be capped when not connected to the
water heater.

16
Gas Conversion Instructions
Unless specifically ordered for operation on natural gas, this water heater is
normally equipped for operation on liquefied petroleum (LP) gas but may be
converted by following these gas conversion instructions.
Caution: Make sure gas to be supplied to this water heater following the
conversion matches the gas being converted to.
To convert from LP gas to natural gas
(For control shown in Figure 6 only)
1. Depress and rotate gas control knob clockwise
to the “OFF” position.
2. Change main gas regulator by removing cap from gas regulator. Depress
and rotate knob clockwise
to NAT. setting using a screwdriver.
Replace cap.
Figure 6
3. Change the pilot regulator by removing pilot regulator cap. Depress and
rotate knob counterclockwise to the NAT. setting using a screwdriver.
Replace cap.
4. Remove the outer door. Remove, or slide open, the inner door.
5. Disconnect thermocouple, gas supply tube and pilot tube from the gas valve
and remove the burner assembly from the water heater.
6. Remove the “RED” color coded L.P. orifice and pilot assembly and replace
with natural gas orifice and pilot assembly provided in the cloth bag attached
to the water heater.
CAUTION
All gas conversions must be performed by qualified service personnel only.

17
Gas Conversion Instructions continued-
7. Replace the burner assembly, reconnect
all fittings and check for leaks. Refer to
“Gas Connections”.
8. Close and/or replace inner and outer doors.
9. To light pilot, follow the lighting instructions
provided on the water heater and in this installation
and operation instruction manual.
10. Remove “equipped for” card from cloth bag and attach to gas piping as close
to gas control as possible. Remove and discard tag attached to water inlet
fitting of the water heater.
To convert from natural gas to LP gas
(For control shown in Figure 6 only)
1. Follow the instructions above except add the “RED” main burner orifice and
pilot assembly. Replace with the ones originally provided with the water
heater.
2. Change the main gas regulator to “LP” as noted in step 2 of the
instructions.
3. Change the pilot regulator to “LP” as noted in step 3 of the instructions.
4. Replace “equipped for” tag with tag supplied in cloth bag for gas being
used.
To convert from LP gas to natural gas
(For control shown in Figure 7 only)
1. Rotate and partially depress gas control knob clockwise to “OFF”
position.
2. Change gas regulator setting by removing cap from gas regulator.
Depress and rotate plunger clockwise
with a screwdriver releasing
plunger.
3. Replace cap.
4. Remove outer door. Remove and/or slide open inner door.
5. Disconnect thermocouple, gas supply tube, and pilot from gas valve and
remove burner assembly from water heater.
6. Remove “RED” color coded main burner orifice and pilot assembly and
replace with orifice and pilot assembly provided in cloth bag attached to the
water heater.
Figure 7

18
Gas Conversion Instructions continued-
7. Replace the burner assembly and reconnect all fittings and check for leaks.
Refer to “Gas Connections”.
8. Close and/or replace inner and outer doors.
Note: For closed combustion product, make sure screws are tight and seal
is made around gas supply tube to burner.
9. To light pilot, follow the lighting instructions provided on the water heater
and in this installation and operation instruction manual.
10.Remove “equipped for” card from cloth bag and attach to gas piping as
close to gas control as possible. Remove and discard tag attached to water
inlet fitting of the water heater.
To convert from natural gas to LP gas
(For control shown in Figure 7 only)
1. Follow the instructions above except remove cap from gas regulator, and
depress and rotate plunger counterclockwise
2. Remove main burner orifice and pilot assembly and replace with “RED”
color coded L.P. orifice and pilot assembly provided in cloth bag attached to
the water heater.
3. Replace “equipped for” tag with tag supplied in cloth bag for gas being used.
To convert from L.P. gas to natural gas
(For control shown in Figure 8 only)
1. Rotate and partially depress gas control knob clockwise to “OFF”
position.
2. Remove the plastic cover from the regulator cap, revealing threads. The
letters “LP” and “NAT” with arrows will be visible.
3. Using an open-ended wrench, turn the regulator cap counter clockwise
, until it comes off. Turn the regulator cap around so the arrow next to
“NAT” is facing toward the gas valve. Reinstall the regulator cap by turning
it clockwise
, until tight.

19
Gas Conversion Instructions continued-
4. Replace the plastic cover.
5. Disconnect thermocouple, gas supply tube and pilot tube from the gas
valve and remove the burner assembly from the water heater.
6. Remove the “RED” color coded L.P. orifice and pilot assembly and
replace with natural gas orifice and pilot assembly provided in the cloth
bag attached to the water heater.
7. Replace the burner assembly,
reconnect all fittings and check for
leaks. Refer to “Gas Connections”.
8. Replace inner doors with the following
procedure.
9. To light pilot, follow the lighting
instructions provided on the water
heater and in this installation and
operation instruction manual.
10. Remove “equipped for” card from cloth bag and attach to gas piping
as close to gas control as possible. Remove and discard tag
attached to water inlet fitting of the water heater.
To convert from natural gas to L.P. gas
(For control shown in Figure 8 only)
1. Follow the instructions above except add the “RED” main burner orifice
and pilot assembly. Replace with the ones originally provided with the
water heater.
2. Change the pilot regulator to “LP” as noted in step 3 of the instructions.
3. Replace “equipped for” tag with tag supplied in cloth bag for gas being
used.
Figure 8
GAS CONTROL
KNOB
GAS
REGULATOR
APPROXIMATELY
120°F (48.9°C)
APPROXIMATELY
85°F (71.1°C)
APPROXIMATELY
160°F (48.9°C)
GAS CONTROL KNOB
SHOWN IN "OFF"
POSITION
NATURAL GAS
SETTING
LP GAS
SETTING

20
GENERAL OPERATION
TO FILL THE WATER HEATER
1. Close the water heater drain valve by turning the knob clockwise.
2. Open the cold water supply shut-off valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater is
filled. Close the faucets and check for water leaks at the water heater drain
valve, combination temperature and pressure relief valve and the hot and
cold water connections.
TO DRAIN THE WATER HEATER
Should it become necessary to completely drain the water heater, make sure
you follow the steps below:
1. Rotate the thermostat dial to the lowest position.
2. Rotate and partially depress gas control knob clockwise
to the “OFF”
position.
3. Shut off the gas supply to the water heater.
4. Close the cold water supply shut-off valve.
5. Open the drain valve on the water heater by turning the knob counter-
clockwise
. The drain valve has threads on the end that will allow the
connection of a standard hose coupling.
6. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater.”
WARNING
Water heaters are heat producing appliances. To avoid damage or
injury there shall be no materials stored against the water heater or
vent-air intake system, and proper care shall be taken to avoid
unnecessary contact (especially by children) with the water heater and
vent-air intake system. UNDER NO CIRCUMSTANCES SHALL
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.