Bradford White 40759U User manual

238-40759-00U REV 5/13
LIGHT DUTY COMMERCIAL
ELECTRIC WATER HEATER
THE WARRANTY ON THIS WATER HEATER IS IN EFFECT ONLY WHEN
THE WATER HEATER IS INSTALLED AND OPERATED IN
ACCORDANCE WITH LOCAL CODES AND THESE INSTRUCTIONS.
THE MANUFACTURER OF THIS HEATER WILL NOT BE LIABLE FOR
ANY DAMAGE RESULTING FROM FAILURE TO COMPLY WITH THESE
INSTRUCTIONS. READ THESE INSTRUCTIONS THOROUGHLY
BEFORE STARTING.
For safety and convenience, it is recommended that this water heater
be installed and serviced by a plumbing professional.
INSTALLATION & OPERATING
INSTRUCTION MANUAL
A Spanish language version of these instructions is available by
contacting the company listed on the rating plate.
La versión espãnola de estas instrucciones se puede obtener al
escribirle a la fábrica cuyo nombre aparece en la placa de
especificaciones.

2
CONGRATULATIONS!
You have just purchased one of the finest water heaters
on the market today!
This installation, operation and instruction manual will
explain in detail the installation and maintenance of your
new Light Duty Commercial Electric Water Heater. We
strongly recommend that you contact a plumbing
professional for the installation of this water heater.
We require that you carefully read this manual, as well as
the enclosed warranty, and refer to it when questions
arise. If you have any specific questions concerning
your warranty, please consult the plumbing professional
from whom your water heater was purchased. For your
records we recommend that you write the model, serial
number and installation date of your water heater in the
maintenance section in the back of this manual.
This manual should be kept with the water heater.
TABLE OF CONTENTS
General Information ...................................................... 3
Installation ..................................................................... 4
Locating the Water Heater........................................ 4
Water Connections.................................................... 5
Electrical Connections.............................................. 11
General Operation......................................................... 16
Thermostat Adjustment ............................................ 17
Maintenance................................................................... 18

3
GENERAL INFORMATION
This electric water heater’s design is certified by INTERTEK (ETL) and listed
in accordance with UL 174. CETL listed in accordance with Canadian
National Standard C22.2, No. 110-M90.
This water heater must be installed in accordance with local codes. In the
absence of local codes, install this water heater in accordance with the
N.E.C. Reference Book (latest edition).
The warranty for this water heater is in effect only when the water heater is
installed, adjusted, and operated in accordance with these Installation and
Operating Instructions. The manufacturer will not be held liable for damage
resulting from alteration and/or failure to comply with these instructions.
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.
This water heater has been designed and certified for the purpose of heating
potable water. The installation and use of this water heater for any purpose
other than the heating of potable water, may cause damage to the water
heater and create a hazardous condition and nullify the warranty.
Do not use this appliance if any part has been submerged in water. The
plumbing professional responsible for the installation of this water heater
should be contacted to inspect the appliance and to replace any part of the
control system, including thermostat, which has been submerged in water.
Make sure that the rating plate on the water heater is referenced for certainty
that the correct voltage is being supplied to the water heater.
A sacrificial anode is used to extend tank life. Removal of this anode for any
reason will nullify the warranty. In areas where water is unusually active, an
odor may occur at the hot water faucet due to a reaction between the
sacrificial anode and impurities in the water. If this should happen, an
alternative anode may be purchased from the supplier that installed this
water heater. This will minimize the odor while protecting the tank.
Additionally, the water heater should be flushed with appropriate dissolvers
to eliminate any bacteria.
CAUTION
Incorrect operation of this appliance may create a hazard to life and
property and will nullify the warranty.
Do not store or use gasoline or other flammable, combustible,
or corrosive vapors and liquids in the vicinity of this or any other
appliance.
DANGER

4
General Information continued-
INSTALLATION
Locating The Water Heater
This water heater MUST be installed indoors out of the wind and
weather.
This water heater shall NOT be installed in any location where gasoline
or flammable vapors are likely to be present, unless the installation is
such to eliminate the probable ignition of gasoline or flammable
vapors.
The location this water heater is to be installed is of utmost importance.
Before installing this water heater, consult the installation section of these
instructions. After reading these installation and operating instructions,
select a location for the water heater where the floor is level and is easily
accessible to a power supply and water connections. It is recommended
that the water heater be located near the center of greatest hot water usage
to prevent heat loss through the pipes. DO NOT locate the water heater
where water lines could be subjected to freezing temperatures. Locate
the water heater so that access panels and drain valves are accessible.
Some models are not equipped with a drain valve. For those models, install
a drain tee in the cold water inlet as close as practical to the water heater.
Water heater corrosion and component failure can be caused by the heating
and breakdown of airborne chemical vapors. Examples of some typical
compounds that are potentially corrosive are: spray can propellants, cleaning
solvents, refrigerator and air conditioning refrigerants, swimming pool
chemicals, calcium or sodium chloride, waxes and process chemicals.
IMPORTANT
Before proceeding, please inspect the water heater and it’s components for
possible damage. DO NOT install any damaged components. If damage is
evident, please contact the supplier where the water heater was purchased
or the manufacturer listed on the rating plate for replacement parts.
WARNING
Water heaters are heat producing appliances. To avoid damage or injury,
there shall be no materials stored against the water heater and proper care
shall be taken to avoid unnecessary contact (especially by children) with
the water heater. UNDER NO CIRCUMSTANCES SHALL FLAMMABLE
MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR
STORED IN THE VICINITY OF THIS WATER HEATER OR ANY
LOCATION FROM WHICH FUMES COULD REACH THE WATER
HEATER.

5
Locating the Water Heater continued-
These materials are corrosive at very low concentration levels with little or no
odor to reveal their presence. NOTE: DAMAGE TO THE WATER HEATER
CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED
BY THE WARRANTY. DO NOT OPERATE THE WATER HEATER IF
EXPOSURE HAS OR WILL OCCUR. DO NOT STORE ANY
POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE
WATER HEATER.
This water heater must be located in an area where leakage of the tank or
water line connections and 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
must have a minimum length and width of at least 4 in. (10.2 cm) greater
than the diameter 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 pitched for proper drainage.
CLEARANCES
1. Minimum clearance to combustible material is 0 inches for the Top,
Sides, Front, and Rear of this water heater. However, it is
recommended that at least 18 inches (45.7 cm) from the Top, and
24 inches (61 cm) from the Front. Clearance for servicing may be
reduced down to minimum clearance to combustible material, but
service time and effort may be greatly increased.
2. Increase distances to provide clearances for servicing.
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.
Water Connections
NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE
MAIN WATER SUPPLY VALVE.
After shutting the main water supply valve, open a faucet to relieve the water
line pressure to prevent any water from leaking out of the pipes while making
the water connections to the water heater. After the pressure has been
relieved, close the faucet. The COLD water inlet and HOT water outlet are
identified on top of the water heater. The fittings at the cold water inlet and
hot water outlet are dielectric waterway fittings with 3/4” NPT tapered male
threads. Make the proper plumbing connections between the water heater
and the plumbing system in the house. Install a shut-off valve in the cold
water supply line.

6
Water Connections continued-
If this water heater is installed in a closed water supply system, such as the
one having a back-flow preventer in the cold water supply, provisions shall
be made to control thermal expansion. DO NOT operate this water heater in
a closed system without provisions for controlling thermal expansion. Your
water supplier or local plumbing inspector should be contacted on how to
control this situation.
After installation of the water lines, open the main water supply valve and fill
the water heater. While the water heater is filling, open several hot water
faucets to allow air to escape from the water system. When a steady stream
of water flows through the faucets, close them and check all water
connections for possible leaks. NEVER OPERATE THE WATER HEATER
WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples on top
of the water heater. Sweat the tubing to the adapter before fitting the
adapter to the water connections. It is imperative that heat is not applied
to the nipples containing a plastic liner.
IMPORTANT
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED 3/4” X 3/4”
TEMPERATURE-PRESSURE RELIEF VALVE WILL RELEASE THE
MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM
EXCESSIVE TEMPERATURE AND PRESSURES.
WARNING
Hydrogen gas can be produced in a hot water system served by this
water heater that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable. To reduce the risk of injury under these conditions, it is
recommended that the hot water faucet be opened for several
minutes at the kitchen sink before using any electrical appliance
connected to the hot water system. If hydrogen is present, there will
probably be an unusual sound such as air escaping through the pipe
as the water begins to flow. There should be no smoking or open
flame near the faucet at the time it is open.

7
Water Connections continued-
WARNING
For protection against excessive temperatures and pressure, install
temperature and pressure protective equipment required by local codes,
but not less than a combination temperature and pressure relief valve
certified by a nationally recognized testing laboratory that maintains
periodic inspection of production of listed equipment or materials, as
meeting the Requirements 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 shall be marked with a maximum set pressure, not to
exceed the maximum working pressure of the water heater. The
combination temperature and pressure relief valve shall also have an
hourly rated temperature steam BTU discharge capacity not less than the
hourly input rating of the water heater.
Install the combination temperature and pressure relief valve into the
opening provided and marked for this purpose on the water heater
Note: Some models may already be equipped or supplied with a
combination temperature and pressure relief valve. Verify that the
combination temperature and pressure relief valve complies with local
codes. If the combination temperature and pressure relief valve does not
comply with local codes, replace it with one that does. Follow the
installation instructions above on this page.
Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within six (6) inches
(15.3 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 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 of four (4) inches
(10.2 cm) be provided on the side of the water heater for servicing and
maintenance of the combination temperature and pressure relief valve.
Do not place a valve between the combination temperature and pressure
relief valve and the tank.

8
Water Connections continued-
This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury.
Certain appliances, such as dishwashers and automatic clothes washers,
may require increased temperature water. By setting the thermostat on this
water heater to obtain increased temperature water required by these
appliances, you may 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
manufacturer listed on the rating plate or from your local plumbing supplier.
Please consult with a plumbing professional.
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
CAUTION
INCREASING THE THERMOSTAT SETTING ABOVE THE PRESET
TEMPERATURE MAY CAUSE SEVERE BURNS AND CONSUME
EXCESSIVE ENERGY. HOTTER WATER INCREASES THE RISK OF
SCALD INJURY.
(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 o
r
before setting temperature
available.
showering.
Temperature limiting valves are
Review this instruction manual
at water heater.
scalded.

9
Water Connections continued-
Upright Models (See Figure 1A & 1B)
The hot and cold water connections are identified on the top of the water
heater (See figure 1A). For bottom inlet models (-503 models), the cold
water inlet is located on the side of the drain valve (see figure 1B). Connect
the hot and cold water lines to the installed nipples using unions. Install a
listed temperature-pressure relief valve in the remaining fitting.
Figure 1A (Top Inlet Models)
Figure 1B (Bottom Inlet Models)

10
Utility Models (See Figure 2)
Utility models are supplied with inlet and outlet nipples located in a plastic
bag attached to the side of the water heater. The hot and cold water
connections are identified on the side of the water heater. Apply appropriate
amount of thread sealant to the provided nipples and install them into the
side of the tank. For 20 gallon utility models, install the supplied anode/nipple
combination at the HOT outlet location. Connect the hot and cold water lines
to the installed nipples using unions. Install a listed temperature-pressure
relief valve in the opening on the side of the water heater. Install a vacuum
relief anti-siphon device in the cold water inlet line.
Figure 2