Bradford White EFR160T120 Series Installation instructions

ULTRA HIGH EFFICIENCY GAS WATER HEATER
(EFR160T120 Series Models)
INSTALLATION/OPERATING MANUAL
WITH TROUBLESHOOTING GUIDE
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
238-48144-00E 7/12
-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
Ambler, PA 19002
Tech. Service [phone]
Service Parts [phone]
Warrant
y
Service
(
800
)
531-2111

2
SECTION I: IMPORTANT INFORMATION
NOTICE
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.
TABLE OF CONTENTS
I IMPORTANT INFORMATION............. 2 VII GAS CONNECTIONS...............................................36
II SPECIFICATIONS .............................. 5 VIII ELECTRICAL CONNECTIONS ................................38
III GENERAL INFORMATION................. 6 IX OPERATING INSTRUCTIONS.................................39
IV INSTALLATION INSTRUCTIONS ...... 9 X MAINTENANCE........................................................47
V WATER CONNECTIONS.................... 16 XI DIAGNOSTIC AND TROUBLESHOOTING GUIDE .52
VI VENTING ............................................ 18 XII PARTS LIST .............................................................71
This gas-fired water heater is design certified by CSA International under the American
National Standard, Z21.10.3 (as indicated on the rating plate) 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.
DO NOT install any damaged venting system 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.
Use only vent terminals provided or factory authorized terminals for venting this water heater.
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.
Failure to properly install the vent and air intake (if applicable) system could result in property damage, personal
injury, or death.
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.
This water heater is suitable for installation on combustible flooring. Do not install water heater directly on carpeting.
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 agency
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.
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.
This water heater requires its own separate venting system. DO NOT connect the exhaust vent into an
existing vent pipe or chimney.
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.
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.
WARNING
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!
To comply with NSF requirements this water heater must be sealed to the floor with sealant, in a smooth and easily
cleanable way.

5
SECTION II: SPECIFICATIONS
Figure 1. Dimensional Layout
Recovery GPH
At Degree Rise DIMENSIONS ( INCHES )
Model No.
Input
Rate
BTU/h
1st
Hr.
Del.
Gal.
At
100°F
Rise 40°F 100°F 140°F
Stg.
Cap.
U.S.
Gal.
Therm.
Eff.
%
A
Ht.
B
Dia.
C
Flr to
Vent
Outlet
D
Flr to
Inlet
Wtr.
Conn
E
Flr to
T&P
Valve
Conn
F
Fl. to
Outlet
Wtr.
Conn
G
Fl. to Air
Intake
H
Fl. to
Gas
Conn.
Front
Wtr.
Conn.
Dia.
Space
Heating
Conn.
Dia.
Gas
Conn.
Dia.
Relief
Valve
Open.
Shpg.
Wt.
(LBS)
EFR-1-
60T120 120,000 180 345 138 99 60 95.0 57 28 ¼ 5 13 40 42 ½ 52 ½ 53 ½ 1 1 ¾ ¾ 570
Recovery LPH
At Degree Rise DIMENSIONS ( MILLIMETERS)
Model No.
Input
Rate
KW
1st Hr.
Del. LPH
at 56°C
Rise 22°C 56°C 78°C
Stg.
Cap.
Liter
Therm.
Eff.
%
A
Ht.
B
Dia.
C
Flr to
Vent
Outlet
D
Flr to
Inlet
Wtr.
Conn
E
Flr to
T&P
Valve
Conn
F
Fl. to
Outlet
Wtr.
Conn
G
Fl. to Air
Intake
H
Fl. to
Gas
Conn
.
Front
Wtr.
Conn
.
Dia.
Space
Heating
Conn.
Dia.
Gas
Conn
.
Dia.
Relief
Valve
Open
.
Shpg
.
Wt.
(KG)
EFR-1-
60T120 35.2 681 1306 522 375 227 95.0
144
8 718 127 330 1016 1080 1334 1359 25 25 19 19 259
Table 1. Specifications

6
SECTION III: GENERAL INFORMATION
FEATURES
This water heater contains the following features:
MAIN POWER ON/OFF SWITCH – The front panel of this water heater has a lighted ON/OFF switch, which is
illuminated when the main power is turned on to indicate power to the water heater.
COMBUSTION SYSTEM – This water heater is equipped with a self-compensating negative pressure pre-mix
combustion system. As the blower operates, air is drawn in through the air intake and into a venturi, which pulls gas
from the gas valve. The gas and air is then mixed in the combustion blower and sent through the transition tube into the
burner. The Direct Spark Ignition System (DSI) then ignites the gas/air fuel mixture to produce flue products
(combustion). The flame sensor signals the ignition control board (described below), that a flame is present.
HONEYWELL INTEGRATED CONTROL – Consists of a control board and a water heater display. An attractive digital
water heater display is on the top front of the water heater for precisely setting and displaying the temperature setpoint
and monitoring the status of the water heater. Pressing the temperature UP and DOWN buttons changes the
temperature setpoint. The temperature format may be displayed in degrees F or degrees C. The water heater display
will show diagnostic codes in the event the water heater needs servicing. The temperature readings of the tank sensor
can be monitored in Service Mode. Also in Service Mode, the display can show up to 10 previous error codes to further
aid in servicing the water heater.
The single control board has plug in wiring harnesses to reduce the chance of miswiring. The control board controls all
ignition, temperature, and combustion blower functions. The control board controls the combustion blower, ignition
timings, and gas valve to control the combustion system in order to maintain the desired tank temperature. The
sequence of operation is described in detail in the Diagnostic Section at the back of this Installation and Operating
Instruction Manual.
ADJUSTABLE THERMOSTAT – 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 may be adjusted from about 70°F (21°C) to about 180°F (82°C). The thermostat was adjusted to 70°F
(21°C) before the water heater was shipped from the factory. It is recommended that lower temperatures be used to
avoid the risk of scalding. Refer to the “Warnings” and the section on SCALDING in “Section V: Water Connections”. It
is further recommended, in all cases, that the water temperature be set for the lowest temperature, which satisfies your
hot water requirements for the installation. This will also provide the most energy efficient operation of the water heater
and minimizes scale formation.
Setting the water heater temperature at 120°F (49°C) will reduce the risk of scalds. Some states require setting lower
temperatures for specific installations.
The top immersion well of the single sensor control also contains a redundant sensor for the high limit (energy cutoff).
The high limit circuit interrupts the main burner gas flow should the water temperature exceed approximately 200°F
(93°C). Error code “65” will be shown on the water heater control display if the high limit temperature has been
exceeded.
Should the high limit switch activate, it must be manually reset. This should only be done by a service technician after
the cause of overheating has been corrected. Refer to the section on “Accessing Service Mode on the Display” in the
Diagnostic section of this Installation and Instruction Manual.
Contact your qualified installing contractor, service provider or manufacturer listed on the rating plate if continued high
limit operation occurs.
SERVICE PANEL – The service panel is located behind the service panel access cover, which is located by the
exhaust elbow near the bottom of the water heater. This panel contains a pressure switch that monitors the pressure in
the exhaust pipe in case the vent terminal becomes blocked. A collector high limit switch is used to monitor the ambient
temperature between the first pass collector and the exhaust collector. This is a manually re-settable switch. If this
switch continues to trip, please contact an authorized service agency.

7
LATCHES – The latches allow easy access for servicing the water heater from the top. Simply remove the two latches
for servicing and re-latch upon completion. No tools are required to obtain access to the top of the water heater.
MIXING VALVE –This water heater is supplied with an ASSE approved mixing valve to reduce the potential for scald
injury when thermostat settings over 120˚F (49ºC) are used for dishwashers or other appliances. The mixing valve
reduces the discharge temperature by mixing cold and hot water in the branch supply lines. Refer to the instructions
supplied with the mixing valve for installation procedures and device specifications. The mixing valve is located inside
the control compartment.
SCALDING WARNING
ASSE APPROVED MIXING DEVICE MUST BE INSTALLED
TO PROVIDE PROTECTION FROM SCALDING
This water heater can deliver scalding temperature water at any faucet in the system if installed without installing
the supplied ASSE mixing device. By setting the thermostat on this water heater to obtain an increased water
temperature without properly installing the supplied mixing device, you may create the potential for scald injury.
To protect against injury, the supplied ASSE approved mixing device (a device to limit the temperature of water
to protect against scald injury via mixing hot and cold water supply) must be properly installed in the water
system. This valve will reduce point of discharge temperature in branch supply lines.
TEMPERATURE AND PRESSURE RELIEF VALVE –
WARNING
Keep clear of the 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, ANSI 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 rating must not be 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 an installed 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 6 inches (15.3 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 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!

8
CONDENSATE DRAIN – The water heater should either be raised several inches above the floor on a concrete slab or
use a low profile condensate pump to allow free drainage of condensate from the elbow drain fitting. This water heater
is a condensing type unit and requires a drain to be located in close proximity to allow the condensate to drain safely.
The condensate drains from the unit at the exhaust elbow located near the bottom of the unit. The preferred connection
to the drain fitting is to use a ¾ inch (1.9 cm) elbow sealed with silicone over the outside of the drain outlet and use ¾
inch (1.9 cm) for the drain trap and condensate line to a drain. Use a thick bead of silicone caulk over the outside of the
drain outlet connection before assembling the elbow. This is preferred over using the threaded tap because the larger
drain line will drain more freely and if too much force is applied to the plastic threads, the fitting may crack and cause a
leak. Make sure the condensate drain line slopes down, away from the water heater at least ⅛inch (.3 cm) per foot (.3
m) toward the drain. The condensate drain pipe must not be routed through an area subject to below freezing
temperatures. The condensate build-up will block the exhaust outlet, which will cause improper operation. Refer to
Figure 2 for the proper connection of an elbow to the drain outlet and a condensate trap.
Figure 2. Condensate Elbow With Trap
CLEANOUT – All models are equipped with a cleanout opening to aid in removal of hard water deposits from the tank
bottom. If this water heater operates under hard water conditions, the following should be performed at least every 3
months: Turn off water supply and drain the water heater. Remove the cleanout jacket cover and tank cover. When
cleaning the tank, care must be taken to avoid trying to break deposits loose as this could damage the glass lining and
shorten the life of the water heater. After cleaning, re-install the cleanout tank cover and jacket cover, and refill with
water. Refer to the section, “Section X: Maintenance” in this Installation and Operating Instruction manual for the
procedures for filling and draining the water heater.
SACRIFICIAL ANODES – Four sacrificial anode rods have been installed in the tank head to extend tank life. The
anode rods should be inspected periodically for corrosion and replaced when necessary to prolong tank life. Water
conditions in your area will influence the time interval for inspection and replacement of the anode rods. The use of a
water softener may increase the speed of anode consumption. More frequent inspection of the anodes is needed when
using softened (or phosphate treated) water. Contact the installing contractor, or service provider that installed the
water heater or the manufacturer listed on the rating plate for anode replacement information.

9
SECTION IV: INSTALLATION INSTRUCTIONS
WARNING
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO
THAT OF A LICENSED TRADESMAN IN THE FIELD. 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!
WARNING
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 4 inches (10.2 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 ¾ inch (1.9 cm) in diameter and pitched
for proper drainage.

10
Sacrificial anode rods have been installed in the tank head of the water heater to extend tank life. The removal of these
anodes 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,
alternative anodes 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.
This water heater MUST be installed indoors out of the wind and weather.
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.
Water heaters in residential garages must be installed so that all burner(s) and ignition device(s) are located
not less than 18 inches (45.7 cm) above the floor and be located, or protected, to avoid physical damage. For
other installations, refer to local codes. In the absence of local codes, the water heater must be installed in
compliance with the National Fuel Gas Code, (ANSI Z223.1-Latest Edition) or CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition).
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 Bradford White Corporation and
noted on the Bill of Lading.
3. Remove all venting components and mixing valve from the combustion assembly compartment by removing
the latches.
NOTICE
The mixing valve, vent terminals and the condensate elbow that are supplied with this water
heater are stored at the top in the Combustion Assembly Compartment. To access these
parts, unlatch the top lid. Be sure to replace the top and relatch.
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 A COMBUSTIBLE FLOOR. Do not install
this water heater directly on carpeting. If the water heater is to be installed on carpeting, it must be installed
on top of a metal or wood panel 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.
3. FOR BASEMENT INSTALLATION, provide a solid level elevated base such as concrete or other suitable pad
to raise the water heater at least 3 inches (7.6 cm) to provide a slope of ⅛inch (.3 cm) to ¼ inch (.6 cm) per
foot (.3 m) for the condensate line to a suitable drain.
4. Minimum clearance to combustible material is 0 inches for the Top, Sides, and Rear of this water heater.
However, it is recommended that at least 18 inches (45.7 cm) from the Top, 24 inches (61 cm) from the
Front, 4 inches (10.2 cm) for the Left Side and Rear, and 12 inches (30.5 cm) from the Right Side
Exhaust Elbow of the water heater be provided for servicing. Clearance for servicing may be reduced
down to minimum clearance to combustible material, but service time and effort may be greatly increased.
5. Increase distances to provide clearance for servicing.

11
Figure 3a. Minimum Clearance To Combustible Material
Figure 3b. Recommended Minimum Clearances For Service Access

12
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.
CAUTION
Do not drop water heater. Do not bump water heater jacket against floor.
Do not bump exhaust vent pipe against crate or other objects. This will damage the water
heater and cause it to be inoperable or create nuisance problems.
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).
WARNING
Temperature and pressure relief valve discharge piping must be piped near floor to eliminate
potential of severe burns. Do not pipe in any area where freezing could occur. Do not install
any shut-off valves, plugs or caps to the temperature and pressure relief valve or piping.
SCALDING WARNING
ASSE APPROVED MIXING DEVICE MUST BE INSTALLED
TO PROVIDE PROTECTION FROM SCALDING
This water heater can deliver scalding temperature water at any faucet in the system if installed without installing
the supplied ASSE mixing device. By setting the thermostat on this water heater to obtain an increased water
temperature without properly installing the supplied mixing device, you may create the potential for scald injury.
To protect against injury, the supplied ASSE approved mixing device (a device to limit the temperature of water
to protect against scald injury via mixing hot and cold water supply) must be properly installed in the water
system. This valve will reduce point of discharge temperature in branch supply lines.
CAUTION
If the building 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.
LOCATION
KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
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 combustion and 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.

13
MECHANICAL EXHAUSTING OF ROOM AIR
1. Where an exhaust fan is installed in the same room with this water heater and combustion air is drawn from
inside the room, sufficient openings for air must be provided in the walls. UNDERSIZED OPENINGS WILL
CAUSE AIR TO BE DRAWN INTO THE ROOM THROUGH THE WATER HEATER’S VENTING SYSTEM,
CAUSING POOR COMBUSTION THAT MAY BE HAZARDOUS TO LIFE. SOOTING MAY RESULT IN
SERIOUS DAMAGE TO THE WATER HEATER AND RISK OF FIRE OR EXPLOSION, WHICH CAN ALSO
CREATE A RISK OF ASPHYXIATION. Refer to local codes and /or National Fuel Gas Code for proper air
opening sizing.
UNCONFINED SPACE
1. In buildings of conventional frame, brick or stone construction, unconfined spaces may provide adequate air
for combustion and ventilation.
2. If the unconfined space is within a building of tight construction (buildings using the following construction:
weather stripping, heavy insulation, caulking, vapor barrier, etc.), air for combustion and ventilation must be
obtained from outdoors. This may be accomplished by piping air directly to the water heater from outside or
providing opening or ducts in the wall. The installation instructions for confined spaces in tightly constructed
buildings must be followed to ensure adequate air supply.
CONFINED SPACE
1. When drawing combustion air from inside a conventionally constructed building to a confined space, such a
space must be provided with two permanent openings.
The top opening is to be located within 12 inches (30.5 cm) of the enclosure top and the bottom
opening within 12 inches (30.5 cm) of the enclosure bottom.
Each opening must have a free area of at least 1 inch² (6.5 cm²) per 1000 Btu/h (.3 kw) of the total input
of all appliances in the enclosure, but not less than 100 inches² (645.2 cm²).
2. If the confined space is within a building of tight construction, air for combustion and ventilation must be
obtained from outdoors. This may be accomplished by piping air directly to the water heater from outside or
providing opening or ducts in the wall. When directly communicating with the outdoors through vertical ducts,
two permanent openings, located in the above manner, must be provided.
Each opening must have a free area of not less than 1 inch² (6.5 cm²) per 4000 Btu/h (1.2 kw) of the
total input of all appliances in the enclosure.
If horizontal ducts are used, each opening must have a free area of not less than 1 inch² (6.5 cm²) per
2000 Btu/h (.6 kw) of the total input of all appliances in the enclosure.
3. If the water heater is installed as a direct vent (outside air piped directly to the water heater), then additional
opening, other than the opening for the air intake, are not required. However, adequate ventilation air must be
provided in all cases to prevent increased room temperature.
CHEMICAL VAPOR CORROSION
Corrosion of the flue ways and vent system will occur if air for combustion contains certain chemical vapors. Such
corrosion may result in poor combustion and create a risk of asphyxiation, as well as reducing the life of the water
heater. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes and process chemicals are corrosive. Products of this sort should
not be stored near the water heater or outside by the air intake (if applicable).
TYPICAL INSTALLATION ILLUSTRATION
CAUTION
If the building 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.

14
Figure 4. Typical Front Inlet Connection
Figure 5. Typical Front Inlet Connect with Storage Heater

15
Figure 6. Typical Two Water Heater Connection
Figure 7. Typical Three Water Heater Connection
Figure 8. Typical Four Water Heater Connection

16
SECTION V: WATER CONNECTIONS
WARNING
Failure to install and maintain a new, listed temperature and pressure relief valve will release the manufacturer from any
claim, which might result from excessive temperature and pressures.
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.
Keep clear of the 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.
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 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. See previous
warning on scalds and an ASSE approved mixing valve.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples in front or side 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.
This water heater must not be operated without installing the mixing valve included in the box shipped with the water
heater located in the control compartment. Refer to the instructions supplied with the mixing valve for proper installation
and settings.
INSTRUCTIONS FOR CONNECTIONS
1. 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. The COLD water inlet and HOT water outlet are
identified on the water heater. 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.
2. 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 must be
made to control thermal expansion. DO NOT operate this water heater in a
closed system without provisions for controlling thermal expansion. Warranties
do not cover damages from thermal expansion such as pressure bulges and/or
deformities. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
3. 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.
4. Never operate the water heater without first being certain it is filled with water.
SCALDING
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.
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.
Figure 9. Scald
Warning

17
By setting the thermostat on this water heater to obtain the increased temperature water required by these appliances, you
might create the potential for scald injury. To protect against injury, you must install the ASSE approved mixing valve supplied
with the water heater in the water system. This valve will reduce point of discharge temperature by mixing cold and hot water
in branch supply lines. Follow the instructions supplied with the mixing valve for proper installation and adjustment. The
following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in
determining the safest water temperature for your applications.
Approximate Time/Temperature Scald Chart
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
Table 2.
ALTERNATE SPACE HEATING WATER CONNECTIONS
DANGER
Toxic chemicals, 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
When the system requires water for space heating at temperatures higher than required for other means, the supplied
ASSE approved mixing valve must be installed to temper the water for those uses in order to reduce the scald hazard
potential.
Failure to properly pipe this water heater may result in improper operation and damage to the water heater or
structure.
Oxygen contamination of this water heater will cause corrosion of iron and steel components, and can lead to water
heater failure.
Connect the system supply and return piping to the water heater.
Refer to Figure 10 and Figure 11 for installation examples.
Maintain a minimum ½ inch (1.3 cm) clearance from hot water
piping to combustible materials.
Figure 10. Alternate Space Heating Connections
M
ain Powe
r
Ultra Hig h Efficienc
y

18
Figure 11. Typical Plumbing Schematic for Zoned Heating
SECTION VI: VENTING
WARNING
The vent system must be properly installed. Failure to properly install the vent system could result in property
damage, personal injury, or death.
DO NOT install damaged venting system 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.
Use only the vent terminals provided or factory authorized terminals for venting this water heater.
The water heater requires its own separate venting system. Do not connect the exhaust vent into an existing vent
pipe or chimney.
All of the exhaust venting connections must be leak checked with a soap solution upon initial start up of the water
heater. Any leaks must be repaired before continuing operation of the water heater.
Do not terminate the venting where noise from the exhaust or intake will be objectionable. This includes locations
close to or across from windows and doors. Avoid anchoring the vent and intake pipes directly to framed walls,
floors, or ceilings unless rubber isolation pipe hangers are used. This prevents any vibrations from being
transmitted into the living spaces.
Do not exceed the venting distances or the number of elbows listed in this manual. Exceeding the maximum
venting distances may cause the water heater to malfunction or cause an unsafe condition.
DO NOT operate this water heater until the venting installation is complete and the piping completed. Failure to
complete installation before operation can result in property damage, personal injury, or death.
WARNING
Risk of carbon monoxide poisoning or fire due to joint separation or pipe breakage.
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. The acceptance of the venting system is dependent upon full compliance
with these installation instructions.
Venting system must not pass through rated fire separations.
The venting system must be free to expand and contract. This venting system must be supported in accordance
with these instructions.

19
NOTICE
Single Wall Polypropylene venting systems that are listed on the Bradford White website are approved for use in the
water heaters covered in this instruction manual. The venting system components are ULC S636 approved and listed
by a recognized agency and may be installed in the U.S. and Canada. Complete instructions for the approved venting
systems can be found on the Bradford White website, bradfordwhite.com or by calling the Technical Service
Department at:800-334-3393.
WARNING
The approved polypropylene venting system Instruction Supplement listed on the Bradford White website for each
manufacturer’s venting system must be carefully read and followed by a qualified installer. Failure to properly install the
vent system may result in property damage, personal injury, or death.
NOTICE
For installations in Canada, field supplied vent piping must comply with CAN/CGA B149.1 (latest edition) and be
certified to the Standard For Type BH, Class II, 65°C, Gas Venting Systems, ULC S636. Components of this listed
system must not be interchanged with other vent systems or unlisted pipe/fittings. All components and specified
primers and cements of the certified vent system must be from a single system manufacturer and not intermixed with
other system manufacturer’s vent system parts. The supplied vent connector and vent termination are certified under
ULC S636 and are also certified as part of the water heater. Refer to the following tables for approved venting
materials, primers, and cements. All approved primers and cements are to be used within their marked time
limitations.
Approved Venting Materials
For installations in the US only
PVC (ASTM D-2241 Schedule 40,
ASTM D-1785; or Cellular Core
Schedule 40 DWV, ASTM F-891)
CPVC (ASTM F-411 Schedule 40)
ABS (ASTM D-2235)
All fittings (other than the components
supplied with the water heater) should
be equivalent to: PVC-DWV (ASTM-F-
2665), CPVC (ASTM F-438), or ABS
(ASTM D-266/3311)
For installations in CANADA
ULC S636 approved CAN-COM
VENTING SYSTEM schedule 40 PVC
for flue gas venting rated Class II, 65°C
(components provided with water
heater)
IPEX ULC S636 approved schedule 40
PVC (all other vent pipe/ fittings)
Approved Primers and Cements
For installations in the US only
PVC and CPVC Primer (ASTM F-656)
PVC and CPVC Cement (ASTM D-
2564)
ABS Primer and Cement (ASTM D-
2235)
For installations in CANADA
IPEX ULC S636 approved PVC Primer
and Cement for flue gas venting rated
Class II, 65°C

20
NOTICE
Before beginning installation of any vent pipe, read the vent pipe manufacturer’s installation instructions.
Do not install the water heater in any location where the ambient temperature may fall below freezing.
Water heater must be protected from freezing downdrafts during shutdown periods.
Provide protection of the building materials from degradation by flue gases from the exhaust vent terminal.
CAUTION
Check to make sure flue gases do not recirculate into the air intake terminal when using direct venting. If
the water heater is having service issues, flue recirculation may be a contributing factor. Even when the
minimum vent terminal separation distances are followed, recirculation may still occur depending upon the
location outside the building, the distance from other buildings, proximity to corners, weather conditions,
wind patterns, and snow depth. Periodically check to make sure that flue recirculation is not occurring.
Signs of flue gas recirculation include frosted or frozen intake terminals, condensate in the intake terminal
and venting system, oxidation or white chalk material on the flame sensor or igniter shield. Correction to
flue recirculation may involve angling the intake away from the exhaust terminal, increasing the distance
between them, relocating the air intake to another side of the building, or using inside air for combustion.
Check to be sure the intake and exhaust terminals are not obstructed, especially during periods of below
freezing weather.
All intake and exhaust venting components must have the same diameter size. Do not use a different size
on the intake and exhaust venting. For 3 inch (7.6 cm) and 4 inch (10.2 cm) venting, use the supplied 2
inch (5.1 cm) vent terminals.
Be sure the condensate runs freely to a drain and does not accumulate inside the water heater. In cold
climates, precautions may need to be taken to insure that the condensate drain does not freeze. Make
sure the condensate trap or drain loop is installed to prevent flue gases from being discharged into the
room. Refer to the Venting section of the Installation and Operating Instructions Manual for complete
instructions on venting and condensate drainage.
High levels of dust and debris such as road and construction dust, insects, and tree pollen may clog the
burner resulting in poor performance and damage to the water heater. Avoid air intake locations where
debris can be created such as exhaust ventilation hoods, gravel parking lots, and near outdoor spotlights
that attract bugs. For these installations, an air intake filter kit, part number 239-47330-00A, is available as
an accessory service part from the installer of this water heater. The air intake filter kit is not designed to
filter out airborne contaminants or chemicals that may damage the water heater.
CAUTION
The vent must terminate a minimum of 12 inches (30.5 cm) above expected snowfall level to prevent
blockage of vent termination.
The horizontal centerline of the exhaust vent terminal (if applicable) must not be located lower than the
horizontal centerline of the air intake terminal if vented through the same wall.
A service drain loop must be installed in the drain tubing to serve as a condensate trap to prevent flue
gases from escaping into the room.
DO NOT position the air intake above the exhaust terminal.
NEVER locate the air intake where exhaust gases can be introduced.