Bradford White DW280L Installation instructions

238-45085-00D REV 10/14
DOUBLE-WALL
INDIRECT-FIRED
WATER HEATER
A Spanish language version of these instructions is available by contacting the manufacturer
listed on the rating plate.
La version espanola de estas instruccions se puede obtener al escribirle a la fábrica cuyo
nombre aparece in la placa de especificaciones.
INSTALLATION/OPERATING MANUAL
WITH PARTS LISTING AND TROUBLESHOOTING GUIDE
For your family’s comfort, safety, and convenience, we
recommend this water heater be installed and serviced by
a plumbing professional.
WARNING
To avoid damage or injury, there
must be no materials stored
against the indirect water heater
and proper care shall be taken to
avoid unnecessary contact
(especially by children) with the
indirect water heater.
Do not store or use
gasoline or other
flammable liquids in
the vicinity of this
water heater or any
other appliance.

2
CONGRATULATIONS!
You have just purchased one of the finest water heaters
on the market today!
This installation, operation, and instruction manual will
explain in detail the installation and maintenance of your
new Indirect water heater. We strongly recommend that
you contact a plumbing professional for the installation of
this water heater.
We require that you carefully read this manual, as well as
the enclosed warranty, and refer to it if questions arise.
If you have any specific questions concerning your
warranty, please consult the plumbing professional from
whom your water heater was purchased. For your
records we recommend that you write the model, serial
number and installation date of your water heater in the
back of this manual.
This manual should be kept with the water heater.
We’re committed to providing you with the finest water
heater made.

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CAUTION
The maximum boiler water supply temperature to the indirect
heat exchanger must not exceed 240°F (115°C).
NOTICE
Insulation blankets are not required for this water heater. This
water heater meets or exceeds the ASHRAE/IES 90.1b standards
with respect to insulation and standby loss requirements.
TABLE OF CONTENTS
I- IMPORTANT INFORMATION…………….… 4
II- SPECIFICATIONS……………………………… 8
III- GENERAL INFORMATION…………………... 11
IV- PRE INSTALLATION………………………….. 14
V- WATER CONNECTIONS……………………… 18
VI- ELECTRICAL CONNECTIONS……………… 23
VII- OPERATING INSTRUCTIONS……………….. 26
VIII- MAINTENANCE………………………………... 29
IX- TROUBLESHOOTING GUIDE……………….. 32
X- PARTS LIST……………………………………... 34
XI- NOTES……………………………………………. 36

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SECTION I
IMPORTANT INFORMATION
-READ CAREFULLY-
The equipment must be installed in accordance with those
installation regulations required in the area where the installation
is to be made. These regulations must be carefully followed in
all cases. Authorities having jurisdiction shall be consulted
before installations are made.
All wiring on water heaters installed in the USA must be in
accordance with the National Electrical Code and/or local
regulations; or in Canada, installed in accordance with the
Canadian Electrical Code and/or local regulations.
The following terms are used throughout this manual to bring
attention to the presence of hazards of various risk levels, or to
important information concerning product life.
DANGER
Indicates an imminently
hazardous situation, which,
if not avoided, will result in
death, serious injury, or
substantial property
damage.
WARNING
Indicates a potentially
hazardous situation, which,
if not avoided, could result
in death, serious injury, or
substantial property
damage.
CAUTION
Indicates a potentially
hazardous situation, which,
if not avoided, may result
in moderate, or minor
injury or property damage.
NOTICE
Indicates special
instructions on installation,
operation or maintenance,
which are important but
not related to personal
injury hazards.

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Important Info continued-
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.
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!
Liquefied petroleum gas/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.
This water heater is supplied 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.
To comply with NSF requirements this water heater is to be:
a) Sealed to the floor with sealant, in a smooth and easily
cleanable way, or
b) Installed with an optional leg kit that includes legs
and/or extensions that provide a minimum clearance of
6” beneath the water heater.

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Important Info continued-
WARNING
Installation is not complete unless a properly sized/capacity
pressure and temperature relief valve is installed into the side
of the water heater. See the General Information section of this
manual for details.
This water heater contains very hot water under high pressure.
Do not unscrew any pipe fittings or attempt to disconnect any
components of this water heater without positively assuring the
water is cool and has no 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 pressure and temperature gauges to determine the
temperature and pressure of the water heater. This water
heater contains components that become very hot. Do not
touch any components unless they are cool.
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 contained in component
manufacturer’s manuals, which are provided with the
appliance before installing, starting-up, operating, maintaining,
or servicing this appliance. Keep this manual and literature in
legible condition and posted near the appliance 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 an experienced, skilled, and knowledgeable installer or
service agency.

7
Important Info continued-
WARNING
It is the responsibility of the installing contractor to see that all
controls are correctly installed and are operating properly
when the installation is complete.
DO NOT operate the water heater with jumpered or absent
controls or safety devices.
DO NOT tamper with or alter the water heater and/or controls.
DO NOT operate the water heater if any external part has been
under water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the control
system that was under water.
This water heater is suitable for installation on combustible
flooring. DO NOT install this water heater on carpeting.
DO NOT operate this water heater without first being certain it
is filled with water.
Flammable items, pressurized containers, or any other potential
fire hazardous articles must never be placed on or adjacent to
the heater. Containers of flammable gases should not be stored
or used in the same room with this water heater.
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 that the water faucet be opened for
several minutes at the kitchen sink before you use any electrical
appliance that is connected 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.

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SECTION II
SPECIFICATIONS
Figure 1 – Tank Layout
Table 1: Water Heater Dimension (Inches)
MODEL A B C D E F
40-Gal. 22 41-1/8 34-3/8 41-7/8 5-3/8 27-1/2
50-Gal. 22 46-1/4 40-1/8 47 5-3/8 27-1/2
65-Gal. 22 59-1/4 53-1/8 60 5-3/8 27-1/2
80-Gal. 24 59 52-7/8 59-3/4 5-3/8 27-1/2
DRAIN COUPLING- 3/4” NPT
DRAIN VALVE – 5/8” NH
TO BOILER RETURN
3/4” NPT
THERMOSTAT UNDER
COVER
FROM BOILER SUPPLY
3/4” NPT
TEMPERATURE AND
PRESSURE RELIEF VALVE
HOT WATER OUTLET
3/4” NPT
WIRING JUNCTION BOX
COLD WATER OUTLET
3/4” NPT
ANODES

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Specifications continued-
Table 2: Water Heater Capacities
MODEL
Tank
Capacity
(Gal)
Coil
Volume
(Gal)
Dry
Weight
(Lbs)
Wet
Weight
(Lbs)
40-Gal. 38 2.5 170 470
50-Gal. 46 2.5 180 547
65-Gal. 60 2.5 196 695
80-Gal. 75 2.5 224 848
Table 3: AHRI Certified Water Heater Ratings
MODEL
First Hour
Rating
(Gal/Hr)
Continuous
Draw
Rating
(Gal/Hr)
Standby
Heat Loss
Rating
(°F/Hr)
Minimum
Output of
Heat Source
(BTU/Hr)
Minimum
Heat Source
Flow Rate
(Gal/Min)
40-Gal 123 98 1.1 65,000 8.0
50-Gal 133 98 0.9 65,000 8.0
65-Gal 148 98 0.7 65,000 8.0
80-Gal 158 98 0.6 65,000 8.0
NOTE: These certified ratings were obtained with a heat source
output and flow rate as specified in Table 3 and a 180°F boiler water
supply temperature. Other results will be obtained under different
conditions.
Table 4: Water Heater Performance
MODEL
Maximum First
Hour Rating
(Gal/Hr) @
140 °F 115 °F
Continuous
Draw Rating
(Gal/Min) @
140 °F 115 °F
Approximate
Boiler Output
Needed For
Ratings
(BTU/hr)
40-Gal. 190 285 2.6 4.2 140,000
50-Gal. 200 295 2.6 4.2 140,000
65-Gal. 210 305 2.6 4.2 140,000
80-Gal. 225 320 2.6 4.2 140,000
NOTE: Based on 200 °F boiler water temperature and 50 °F potable
water inlet temperature.

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Specifications continued-
Table 5: Water Heater Performance
MODEL
Hot Water
Availability
(Minutes)
Coil Heat
Transfer Area
(Sq Ft)
Pressure Drop at
Rated Heat
Source Flow Rate
(Feet of Head)
40-Gal. 6.8 14.2 2.4
50-Gal. 8.6 14.2 2.4
65-Gal. 10.8 14.2 2.4
80-Gal. 13.5 14.2 2.4
NOTICE
If the boiler takes longer to heat up from a cold start
than the water availability as noted above, hot water
shortage may occur.
Hot water availability is based on drawing 80% of the
heated tank volume at 4 gallons per minute flow rate.
The maximum heat transfer through the coil (heat
input) of the water heater at 240°F boiler water supply
temperature and 210°F potable water temperature is
23,500 Btu/hr. Potable water temperature is limited to
below 210 °F and nominal water-containing capacity
is below 120 gallons for all indirect-fired models.
Accordingly, per Part HLW-101.2, Section IV of the
ASME Boiler and Pressure Vessel Code, all indirect-
fired products listed are exempted from compliance
with the code.