Bradford White eF Series Installation instructions

238-48384-00F REV 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
in
j
ur
y
or death.
ULTRA HIGH EFFICIENCY COMMERCIAL GAS WATER
HEATER
(EF™ Series Models)
INSTALLATION/OPERATING MANUAL
WITH TROUBLESHOOTING GUIDE
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
Ambler, PA 19002
Tech. Service [phone]
Service Parts [phone]
Warrant
y
Service
(
800
)
531-2111

2
SECTION I: IMPORTANT INFORMATION
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) available from CSA Standards
Association, 5060 Spectrum Way, Mississauga, Ontario, CANADA L4W 5N6.
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
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.
NOTICE
I IMPORTANT INFORMATION.........................2 VIII ELECTRICAL CONNECTIONS....................38
II SPECIFICATIONS.........................................5 IX OPERATING INSTRUCTIONS.....................39
III GENERAL INFORMATION............................6 X MAINTENANCE.........................................48
IV INSTALLATION INSTRUCTIONS...................9 XI DIAGNOSTICS AND TROUBLE SHOOTING
GUIDE.......................................................52
V WATER CONNECTIONS.............................15
VI VENTING...................................................17 XII PARTS LIST...............................................71
VII GAS CONNECTIONS..................................36
TABLE OF CONTENTS

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.
To comply with NSF requirements this water heater must be sealed to the floor with sealant, in a smooth and easily
cleanable way.
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
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)
EF60T125 125,000 187 364 145 104 60 96.0 57 28 1/4 5 13 40 42 ½ 52 ½ 53 ½ 1 ½ 1 ¾ ¾ 570
EF60T150 150,000 211 423 169 121 60 93.0 57 28 1/4 5 13 40 42 ½ 52 ½ 53 ½ 1 ½ 1 ¾ ¾ 570
EF60T199
EF100T150
EF100T199
EF100T250
EF100T300
199,999
150,000
199,999
250,000
300,000
265
250
309
364
405
558
450
597
735
836
223
180
239
294
335
159
129
171
210
239
60
100
100
100
100
92.0
99.1
98.5
97.0
92.0
57
77 5/8
77 5/8
77 5/8
77 5/8
28 1/4
28 1/4
28 1/4
28 1/4
28 1/4
5
5
5
5
5
13
13
13
13
13
40
60
60
60
60
42 ½
62 ½
62 ½
62 ½
62 ½
52 ½
73 1/8
73 1/8
73 1/8
73 1/8
53 ½
74 ¾
74 ¾
74 ¾
74 ¾
1 ½
1 ½
1 ½
1 ½
1 ½
1
1
1
1
1
¾
¾
¾
¾
¾
¾
¾
¾
1
1
570
900
900
900
900
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)
EF60T125
EF60T150
EF60T199
EF100T150
EF100T199
EF100T250
EF100T300
36.6
43.9
58.6
43.9
58.6
73.2
87.9
708
799
1003
946
1170
1378
1533
1378
1601
2112
1703
2260
2782
3165
549
640
844
681
905
1113
1268
394
458
602
488
647
795
905
227
227
227
379
379
379
379
96.0
93.0
92.0
99.1
98.5
97.0
92.0
1448
1448
1448
1972
1972
1972
1972
718
718
718
718
718
718
718
127
127
127
127
127
127
127
330
330
330
330
330
330
330
1016
1016
1016
1524
1524
1524
1524
1080
1080
1080
1588
1588
1588
1588
1334
1334
1334
1857
1857
1857
1857
1359
1359
1359
1899
1899
1899
1899
38
38
38
38
38
38
38
25
25
25
25
25
25
25
19
19
19
19
19
19
19
19
19
19
19
19
25
25
259
259
259
408
408
408
408
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 mis-wiring. 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 as part of the Integrated
Control System 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.
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.

7
TEMPERATURE AND PRESSURE RELIEF VALVE –
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. Using an approved primer and
cement (refer to “Venting” section), connect a 3/4" elbow or 3/4" coupling over the outside of the drain outlet and use 3/4"
pipe for the drain trap and condensate line to a drain. Make sure the condensate drain line slopes down, away from the
water heater at least 1/8" per foot 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.
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 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
(10.0 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

8
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.
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.

9
SECTION IV: INSTALLATION INSTRUCTIONS
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.
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.
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!
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 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.
WARNING

10
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 shipper, and noted on the Bill of
Lading.
3. Remove all venting components from the combustion assembly compartment by removing the latches.
NOTICE
The vent terminals and the condensate elbow that is supplied with this water heater are stored at the top in the
Combustion Assembly Compartment. To access the vent terminals and condensate elbow, unlatch the top lid and
remove parts. 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 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” to provide a slope of 1/8” to 1/4” per foot for the condensate line to a suitable drain.
4. Minimum clearance to combustible material is 0” for the Top, Sides, and Rear of this water heater. However, it is
recommended that at least 18” from the Top, 24” from the Front, 4” for the Left Side and Rear, and 12” 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.
Figure 3a. Minimum Clearance To Combustible Material

11
Figure 3b. Recommended Minimum Clearances For Service Access
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 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).
DANGER
Temperature setting should not exceed safe temperature at fixtures. See water temperature control warning in
Section V, “Water Connections”. If higher preheat temperatures are necessary to obtain adequate booster output,
add an ASSE approved mixing device for hot water supplied to fixtures.
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.

12
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.
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
shall be provided with two permanent openings.
The top opening is to be located within twelve (12) inches of the enclosure top and the bottom opening within
twelve (12) inches of the enclosure bottom.
Each opening shall have a free area of at least one square inch per 1000 Btu/h of the total input of all
appliances in the enclosure, but not less than 100 square inches.
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, shall be provided.
Each opening shall have a free area of not less than one square inch per 4000 Btu/h of the total input of all
appliances in the enclosure.
If horizontal ducts are used, each opening shall have a free area of not less than one square inch per 2000
Btu/h 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.

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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
Figure 4. Typical Front Inlet Connection Figure 5. Typical Front Inlet Connect with Storage Heater
Figure 6. Typical Two Water Heater Connection
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.

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Figure 7. Typical Three Water Heater Connection
Figure 8. Typical Four Water Heater Connection

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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.
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.
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. 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 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 local plumbing supplier. 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.
(52°C) 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, contact local plumbing
supplier.
showering.
Temperature limiting valves are
Review this instruction manual
at water heater.
scalded.

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Approximate Time/Temperature Scald Chart
Table 2.
ALTERNATE SPACE HEATING WATER CONNECTIONS
DANGER
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
When the system requires water for space heating at temperatures higher than required for other means, an 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 9 and Figure 10 for installation examples. Maintain a minimum 1/2” clearance from hot water piping to
combustible materials.
Figure 9. Alternate Space Heating Connections
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

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Figure 10. 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.

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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 shall 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
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.

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VENTING
The venting instructions must be followed to avoid restricted combustion or recirculation of flue gases. Such
conditions cause sooting or risks of fire and asphyxiation.
This water heater can be installed as either a direct vent system or power vent (air from inside) system. If it is
installed as a direct vent system, then the air intake and the exhaust vent are piped to the outside. If a power vented
system is used, then air is drawn from inside and only the exhaust is piped to the outside. Determine which system is
best for your application and install as described in the following sections.
DIRECT VENT INSTALLATION
Venting may be run horizontally through an outside wall or vertically through a roof through using either 2 inch (5.1
cm), 3 inch (7.6 cm) or 4 inch (10.2 cm) diameter pipe. This water heater is supplied with a screened intake elbow
and exhaust coupling referred to as the air intake terminal and the exhaust vent terminal.
Direct Vent Terminal Location
Plan the vent system layout so that proper clearances are maintained from plumbing and wiring. Before the vent is
installed, determine the vent pipe termination location as shown in Figure 11.
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 2 inch or 4 inch venting, use the supplied 3 inch vent terminals. If a 2 inch vent terminal
is preferred, use 2 inch terminal Part Number 239-39831-00. This terminal is available from your supplier.
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 shall terminate a minimum of 12 inches 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.
WARNING
The EF100T250 and EF100T300 models are not approved for 2 inch diameter vent pipe. Venting with 2 inch pipe on
these models may result in damage to the water heater or cause an unsafe condition. DO NOT use 2 inch Vent or Air
Intake Pipe on EF100T250/300 models.

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NOTICE
The air intake and exhaust terminals may be located on separate outside walls or one terminal may exit the roof while the
other is through the wall. The total combined equivalent vent length must be within the limits specified in the venting tables
and the intake length cannot exceed the exhaust by more than 30 feet. The minimum recommended vent separation distance
between the intake and exhaust terminals is 36”. Local conditions may require a need for greater vent separation distances.
NOTICE
If 4 inch pipe is used, then a use a 4 inch to 3 inch reducer fitting before exiting the wall or roof to use the supplied
screened intake and exhaust terminals. If 2 inch pipe is used, then use a 2 inch to 3 inch reducer to adapt to the 3 inch
vent terminal size. If a 2 inch vent terminal is preferred, use 2 inch terminal Part Number 239-39831-00. This terminal
is available from your supplier.