Bradford White POWERED DIRECT VENT SERIES GAS-FIRED COMMERCIAL WATER... User manual

238-47707-00E REV 7/12
POWERED DIRECT VENT SERIES GAS-FIRED
COMMERCIAL WATER HEATER
(INDEPENDENT PVC VENTING)
INSTALLATION/OPERATION MANUAL
WITH TROUBLESHOOTING GUIDE
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
- Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
- 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.
- For your family’s comfort, safety and
convenience, it is recommended this water
heater be installed and serviced by a
plumbing professional.
WARNING: If the information in
these instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or death.

2
SECTION I: IMPORTANT INFORMATION
This water heater has a limited warranty. The warranty for this water heater is valid only if the water heater has
been installed, maintained and operated in accordance with these instructions. The warranty does not cover
damage or injury caused by the use of any energy-saving devices (other than those authorized by the manufacturer)
in conjunction with this water heater. The use of unauthorized energy-saving devices may decrease the life of the
water heater and endanger life and/or property. The manufacturer will not be liable for any damage, injury, or loss of
life resulting from alteration and/or failure to comply with these instructions.
IMPORTANT-Before proceeding, please inspect the water heater and components for possible damage. DO NOT
install damaged components. If damage is evident, please contact the supplier where the water heater was
purchased or the manufacturer listed on the rating plate for replacement parts.
NOTICE
I IMPORTANT INFORMATION…………………….2 VIII ELECTRICAL CONNECTIONS.......................23
II SPECIFICATIONS................................................5 IX OPERATING INSTRUCTIONS.......................26
III GENERAL INFORMATION..................................6 X MAINTENANCE..............................................33
IV INSTALLATION INSTRUCTIONS........................8 XI DIAGNOSTIC AND TROUBLESHOOTING
GUIDE.............................................................37
V VENTING............................................................11 XII PARTS LIST...................................................57
VI WATER CONNECTIONS…………………..……20 XIII INSTALLATION FOR POTABLE
WATER AND SPACE HEATING...................59
VII GAS
CONNECTIONS.........................................22
XIV NOTES………………………………………....60
TABLE OF CONTENTS
This gas-fired water heater is design certified by CSA International under the American National Standard, Z21.10.3
and CAN/CGA 4.3-M (as indicated on the rating plate). These standards are available from CSA Standards
Association, 5060 Spectrum Way Mississauga, Ontario L4W 5N6 CANADA.
This water heater must be installed in accordance with local codes. In the absence of local codes, it must be
installed in compliance with 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 following terms are used throughout this manual to bring attention to the presence of hazards at various risk
levels, or to important information concerning product life.
READ CAREFULLY
Indicates special instructions on installation,
operation or maintenance, which are important
but not related to personal injury hazards.
NOTICE
Indicates a potentially hazardous situation,
which, if not avoided, could result in death,
serious injury or substantial property damage.
WARNING
Indicates potentially hazardous situation, which,
if not avoided, may result in moderate or minor
injury or property damage.
CAUTION
Indicates an imminently hazardous situation,
which, if not avoided, will result in death, serious
injury or substantial property damage.
DANGER

3
DANGER
DO NOT store or use gasoline or other flammable, combustible, or corrosive vapors and/or liquids in the vicinity of
this or any other appliance.
This water heater is equipped with an adjustable thermostat to control water temperature. Hot water temperatures
required for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and/or
death. The temperature at which injury occurs varies with the person’s age and the time of exposure. The slower
response time of disabled persons increases the hazards to them. NEVER allow small children to use a hot water
tap, or to draw their own bath water. NEVER leave a child or disabled person unattended in a bathtub or shower.
Toxic chemical, such as those used for boiler treatment, must not be introduced into potable water used for space
heating.
This water heater must not be connected to an existing heating system or component(s) previously used with a non-
potable water heating appliance.
All piping components connected to this water heater for space heating applications must be suitable for use with
potable water.
WARNING
Improper installation, adjustments, alteration, service or maintenance can cause property damage, personal injury or
loss of life. Failure to follow all instructions in the proper order can cause personal injury or death. Read and
understand all instructions, including all those provided with the appliance before installing, starting-up, operating,
maintaining or servicing this appliance. Keep this manual and literature in legible condition with this water heater for
reference by owner and service technician.
This water heater requires regular maintenance and service to operate safely. Follow the instructions contained in
this manual.
Installation, maintenance, and service must be performed only by a qualified, skilled and knowledgeable installer or
service provider.
Installation is not complete unless a temperature and pressure relief valve is installed into the proper location at the
top of this water heater.
It is the responsibility of the installing contractor to see that all controls are correctly installed and are properly
operating when the installation is complete.
DO NOT operate this water heater without first being certain it is filled with water.
DO NOT tamper with or alter the water heater and/or controls.
DO NOT operate water heater with jumpered or absent controls or safety devices.
DO NOT operate water heater if any external part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system including gas controls, which has
been under water.
DO NOT attempt to use this water heater with any gas other than the type listed on the rating plate. Do not attempt to
convert this water heater for use with a gas other than the type for which it is equipped. Failure to use the proper gas
can create an unsafe condition resulting in property damage, bodily injury, or death. Consult your local gas supplier
or gas company if there are any questions.
For installations in high altitude regions, this water heater must be ordered from the supplier to the manufacturer’s
specifications for that particular altitude. Contact the company listed on the rating plate when ordering high altitude
constructed water heaters.
Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty.
DO NOT operate this water heater if the input rate exceeds the rate shown on the water heater rating plate.
This water heater contains very hot water under high pressure. Do not unscrew any pipe fittings nor attempt to
disconnect any components of this water heater without positively assuring the water is cool and is not under
pressure. Always wear protective clothing and equipment when installing, starting up or servicing this water heater to
prevent scald injuries. Do not rely on the temperature gauges to determine the temperature. Do not touch any
components unless they are cool.
This water heater must be properly vented and connected to an approved vent system in good condition. DO NOT
operate water heater with the absence of an approved vent system. A clean and unobstructed vent system is
necessary to allow noxious fumes that could cause injury or loss of life to vent safely and will contribute toward
maintaining the water heater’s efficiency.

4
WARNING
This water heater needs fresh air for safe operation and must be installed so there are provisions for adequate
combustion and ventilation air. Insufficient air supply will cause a recirculation of combustion products resulting in
contamination that may be hazardous to life. This will result in carboning or sooting of the combustion chamber,
burners, and flue tubes and creates a risk of asphyxiation.
Water heater materials of construction, products of combustion and the fuel contain carbon monoxide, nitrogen oxides,
aldehydes and/or other toxic or harmful substances which can cause death or serious injury and which are known to
the state of California to cause cancer, birth defects and other reproductive harm. Always use proper safety clothing,
respirators and equipment when servicing or working nearby this water heater.
Flammable items, pressurized containers or any other potential fire hazardous articles must never be placed on or
adjacent to the water heater. Open containers of flammable material should not be stored or used in the same room
with this water heater.
Insulation blankets are not required for this water heater. This water heater meets or exceeds the ASHRAE/IES 90.1b
(latest edition) standards with respect to insulation and standby loss requirements.
Setting the water temperature to the maximum set point can result in scalding hot water delivered to the faucets. It is
highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of the
installation. See following section in this Installation/Operation Manual to change the maximum setpoint limit (max
setpoint). Make sure the water heater control display is not in a public area that can result in the temperature settings
being improperly adjusted.
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 connect to the hot water system. If hydrogen is present, there will be
unusual sounds 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.
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.
Liquefied petroleum gases/propane gas is 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 telephone in another building. Follow the gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED!
WARNING

5
SECTION II: SPECIFICATIONS
Figure 1. Dimensional layout
Model Description Dimensions for Figure 1
Capacity Input (BTU/hr) A B C D E
(Gal) Nat. LP (In.) (In.) (In.) (In.) (In.)
100 199,999 199,999 72.13 60.31 77.19 56.81 74.13
100 150,000 150,000 72.13 60.31 77.19 56.81 74.13
100 250,000 225,000 72.13 60.31 82.13 56.81 74.13
80 250,000 225,000 63.13 51.31 68.19 47.81 65.13
80 199,999 199,999 63.13 51.31 68.19 47.81 65.13
80 150,000 150,000 63.13 51.31 68.19 47.81 65.13
Model Description Dimensions for Figure 1
Capacity Input (kW/hr) A B C D E
(Liter) Nat. LP (cm) (cm) (cm) (cm) (cm)
378.5 58.6 58.6 183.2 153.2 196.1 144.3 188.3
378.5 43.9 43.9 183.2 153.2 196.1 144.3 188.3
378.5 73.2 65.9 183.2 153.2 208.4 144.3 188.3
302.8 73.2 65.9 160.4 130.3 173.2 121.4 165.4
302.8 58.6 58.6 160.4 130.3 173.2 121.4 165.4
302.8 43.9 43.9 160.4 130.3 173.2 121.4 165.4

6
SECTION III: GENERAL INFORMATION
FEATURES
1. Porcelain enamel lined tank provides corrosion protection with a tough glass lining on the interior of the tank.
2. Magnesium anodes provide an extra measure of protection and extends tank life.
3. Direct Vent design with an induced draft blower. Flue gases are exhausted and combustion air is taken from outside
the building through 3” or 4” PVC, CPVC, or ABS pipe. Maximum venting distance for each pipe of 40 feet with one
elbow for 3” diameter pipe and 55 feet with one elbow for 4” diameter pipe. May be horizontally or vertically vented.
See venting section for complete details.
4. Hand Hole Cleanout allows inspection of tank interior and allows the removal of lime and sediment deposits.
5. Honeywell Integrated Water Heater has the following features:
Attractive digital water heater display on control panel for precisely setting and displaying the temperature setpoint.
Pressing temperature up and down buttons changes the temperature setpoint. Temperature format may be
displayed in degrees F or degrees C.
Single control board with plug in wiring controls temperature, ignition, and induced draft blower operation.
Reduced number of parts for servicing and wiring.
Plug in wiring reduces chance of miswiring.
Water heater display will show diagnostic codes in the event the water heater needs servicing. Aids in diagnosing
and servicing the water heater. Temperature of the tank sensors can be monitored in the Service Mode.
Water heater display can show up to 10 previous error codes to further aid in servicing the water heater.
Keep clear of combination temperature and pressure relief valve discharge line outlet. The discharge may be
hot enough to cause scald injury. The water is under pressure and may splash.
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, ANS Z21.22 and the Standard CAN1-4.4 Temperature, Pressure, Temperature and
Pressure Relief Valves and Vacuum Relief Valves. The combination temperature and pressure relief valve must 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 must 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.
WARNING

7
DISHWASHING MACHINE REQUIREMENTS
All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water
flow pressures between 15 and 25 pounds per square inch. Flow pressures above 25 pounds per square inch, or below
15 pounds per square inch, will result in improperly sanitized dishes.
The National Sanitation Foundation also recommends circulation of 180°F water. Where this is done, the circulation
should be very gentle so that it does not cause any unnecessary turbulence inside the water heater. The circulation
should be just enough to provide 180°F water at the point of take-off to the dishwashing machine. Adjust flow by means
of the valve in the circulation line.

8
SECTION IV: INSTALLATION INSTRUCTIONS
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED
TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING, GAS SUPPLY AND
ELECTRICAL WORK ARE REQUIRED.
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 telephone in another building.
Gas detectors are available. Contact your gas supplier or plumbing professional for more information.
Liquefied petroleum gases/propane gas is 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 telephone in another building. Follow the gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED!
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 depth must be suitable for draining and collecting water, and have a minimum length
and width of at least four (4) inches (10.0 cm) measured from the jacket of 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 (2.0 cm) in diameter and pitched for proper drainage. 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.
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against
the water heater and proper care must be taken to avoid unnecessary contact (especially by children) with the water
heater components. 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.
Failure to adhere to these installation and operating instructions may create a hazard to life and property and will
nullify the warranty.
WARNING

9
Minimum Clearances
The location of this water heater is of the utmost importance. Before installing this water heater, you should read the
Installation section of these instructions. After reading these Installation and Operating Instructions, select a location for
the water heater where the floor is level and is easily accessible to water lines, gas supply (type identified on the rating
plate), an adequate open drain, and within the maximum specified venting distance to an outside wall or roof for the direct
vent terminal. 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 or accumulate on the controls.
This installation must allow access to the front of the water heater and adequate clearance must 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 must 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 three (3) inches (7.6 cm) in any direction or, if the
appliance is to be installed in an alcove or closet, the entire floor must be covered by the panel. The minimum clearances
to combustibles for this water heater are given on the following pages. A minimum of 24 inches (61 cm) front clearance
must be provided for inspection and servicing. Adequate clearances must be provided for easy access to controls by
service personnel to enable proper cleaning, servicing, and operation of the water heater. Under no circumstances is the
front of the water heater to be placed in a position where the burner tray assembly cannot slide out for removal when
servicing.
This water heater MUST be installed indoors out of the wind and weather.
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 DSA Headquarters Office, 1102 Q Street, Suite 5100, Sacramento, California 95811.
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.
UNPACKING
INSPECT SHIPMENT carefully for any signs of damage.
1. All equipment is carefully manufactured, inspected and packed.
2. Any claims for damage or shortage in shipment must be filed immediately with the manufacturer noted on the
rating plate label.
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 OR
THE DIRECT VENT TERMINAL.
This water heater may be installed in an alcove on combustible flooring with clearances from combustible materials
as shown in the following clearances illustration of this Installation and Operation Instruction Manual.
NOTICE
The National Fuel Gas Code (ANSI Z233.1- latest edition) or in Canada The Natural Gas or Propane
Installation Code CAN/CGA (B149.1, B149.2- latest edition), expressly prohibits the following:
a. Installation of a water heater in a bathroom, bedroom, or any occupied room normally kept closed.
b. Installation of a water heater in a garage, unless the unit is installed so that the burner and ignition devices are
at least eighteen (18) inches (45.8 cm) above floor level and protected to avoid damage by a moving vehicle.
If the buildings cold water supply has a back-flow preventer, check valve or water meter with check valve, provisions
for thermal expansion of water in the hot water system must be provided.
CAUTION

10
LOCATE WATER HEATER in front of final position before removing crate.
1. LOCATE so that venting connections will be short and direct.
2. THIS WATER HEATER IS SUITABLE FOR INSTALLATION ON COMBUSTIBLE FLOOR.
3. Proper venting practices must be considered when selecting a location for this water heater. For exact venting
specifications, please consult the Venting section of these Installation and Operating Instructions.
4. 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.
5. Increase distances to provide clearance for servicing.
MINIMUM CLEARANCES
Figure 2
REMOVE CRATE
1. Remove all banding and pry off crate sides carefully so as not to damage the water heater.
2. Carefully roll/lift the water heater from the crate base.
MOVE WATER HEATER TO PERMANENT POSITION by sliding or walking. Place drain pan underneath water heater
INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE (if not already installed).
This water heater must be located in an area where the general public does not have access to set temperatures.
AIR REQUIREMENTS
1. Do not obstruct the flow of ventilating air.
2. For safe operation, adequate air is needed for combustion and ventilation. Sooting may result in serious damage
to the water heater and risk of fire or explosion. It can also create a risk of asphyxiation. Such a condition often
will result in a yellow, luminous burner flame, causing carboning or sooting of the combustion chamber, burner
and flue tubes.
IMPORTANT-The flow of combustion and ventilating air must not be obstructed.
WARNING