Bradford White SW-2-40R-L User manual

238-43480-00L REV 8/20
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
TABLE OF CONTENTS
I-
IMPORTANT INFORMATION…………….…..
3
II-
SPECIFICATIONS……………………………….
7
III-
GENERAL INFORMATION…………………….
10
IV-
PRE-INSTALLATION……………………………
12
V-
WATER CONNECTIONS………………………..
17
VI-
ELECTRICAL CONNECTIONS………………..
22
VII-
OPERATING INSTRUCTIONS…………………
23
VIII-
MAINTENANCE………………………………….
26
IX-
TROUBLESHOOTING GUIDE…………………
29
X-
PARTS LIST……………………………………….
31
NOTES……………………………………………..
32
CONGRATULATIONS!
You have 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.

3
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.
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.
DANGER
Indicates an imminently
hazardous situation, which,
if not avoided, will 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.
WARNING
Indicates a potentially
hazardous situation, which,
if not avoided, could result
in death, serious injury, or
substantial property
damage.
NOTICE
Indicates special
instructions on installation,
operation or maintenance,
which are important but not
related to personal injury
hazards.

4
Important Information 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.

5
Important Information continued-
WARNING
Installation is not complete unless a pressure and temperature
relief valve is installed into the side of the water heater. See the
Water Connections 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.
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.

6
Important Information 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.

7
SECTION II
SPECIFICATIONS
Figure 1 –Tank Layout
Table 1: Water Heater Dimension (Inches)
Model
A
B
C
D
E
F
30-Gal. / Res.
22
33-5/8
28-1/4
34-3/8
5-3/8
27-1/2
40-Gal. “R” / Res.
22
41-1/8
34-3/8
41-7/8
5-3/8
27-1/2
50-Gal. “R” / Res.
22
46-1/4
40-1/8
47
5-3/8
27-1/2
65-Gal. / Res.
22
59-1/4
53-1/8
60
5-3/8
27-1/2
65-Gal. / Com.
22
59-1/4
53-1/8
60
5-3/8
47-3/4
80-Gal. / Res.
24
59
52-7/8
59-3/4
5-3/8
27-1/2
80-Gal. / Com.
24
59
52-7/8
59-3/4
5-3/8
47-3/4
120-Gal. / Res.
28-1/4
62-1/2
55-3/4
63-1/4
6-3/8
28-1/2
120-Gal. / Com.
28-1/4
62-1/2
55-3/4
63-1/4
6-3/8
48-3/4

8
Specifications continued-
Table 2: Water Heater Capacities
Model
Tank
Capacity
(Gal)
Coil Volume
(Gal)
Dry Weight
(Lbs)
Wet Weight
(Lbs)
30-Gal. / Res.
29
2.7
140
404
40-Gal. “R”/ Res.
37
2.7
172
486
50-Gal. “R” / Res.
43
2.7
180
576
65-Gal. / Res.
57
2.7
196
704
65-Gal. / Com.
54
5.0
265
768
80-Gal. / Res.
71
2.7
224
861
80-Gal. / Com.
67
5.0
293
920
120-Gal. / Res.
110
2.7
355
1324
120-Gal. / Com.
107
5.0
415
1370
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
Heat Output
Rate of the
Heat Source
(BTU/Hr)
Minimum
Heat
Source
Flow Rate
(Gal/Min)
30-Gal. /
Res.
197
180
1.2
120,000
13.7
40-Gal.
“R” / Res.
205
180
1.1
120,000
13.7
50-Gal.
“R” / Res.
210
180
0.9
120,000
13.7
65-Gal. /
Res.
215
175
0.8
115,000
13.7
65-Gal. /
Com.
370
335
0.8
225,000
14.0
80-Gal. /
Res.
235
175
0.6
115,000
13.7
80-Gal. /
Com.
380
335
0.6
225,000
14.0
120-Gal. /
Res.
265
175
0.4
115,000
13.7
120-Gal. /
Com.
400
325
0.4
220,000
14.0
NOTES: These ratings were obtained with a heat source output rate
and flow rate as specified in Table 3 and a 180°F boiler water supply
temperature. Other results will be obtained under different conditions.

9
Specifications continued-
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)
30-Gal. / Res.
226
342
3.3
5.2
180,000
40-Gal. “R” / Res.
235
351
3.3
5.2
180,000
50-Gal. “R” / Res.
244
360
3.3
5.2
180,000
65-Gal. / Res.
258
374
3.3
5.2
180,000
65-Gal. / Com.
396
582
5.7
8.8
300,000
80-Gal. / Res.
272
388
3.3
5.2
180,000
80-Gal. / Com.
408
594
5.7
8.8
300,000
120-Gal. / Res.
309
425
3.3
5.2
180,000
120-Gal. / Com.
445
631
5.7
8.8
300,000
NOTES: Based on 200°F boiler water temperature and 50°F potable
water inlet temperature.
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)
30-Gal. / Res.
5.5
14.2
1.5
40-Gal. “R” / Res.
7.5
14.2
1.5
50-Gal. “R” / Res.
9.0
14.2
1.5
65-Gal. / Res.
11.0
14.2
1.5
65-Gal. / Com.
10.5
27.2
5.0
80-Gal. / Res.
13.5
14.2
1.5
80-Gal. / Com.
13.2
27.2
5.0
120-Gal. / Res.
20.8
14.2
1.5
120-Gal. / Com.
20.6
27.2
5.0

10
Specifications continued-
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 off 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 94,100 Btu/hr for residential models
and 180,300 Btu/hr for commercial models. 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.
SECTION III
GENERAL INFORMATION
FEATURES
This water heater contains the following features:
HEAT EXCHANGER –The heat exchanger (coil) has 1” NPT female
fittings.
These water heaters with single-wall heat exchangers meets the
Uniform Plumbing Code for installation in all potable water systems
provided that:
•The boiler water (including additives) is practically non-toxic,
having toxicity rating of class of 1 as listed in Clinical Toxicology
of Commercial Products.
•The boiler water pressure is limited to maximum 30 psig by
approved relief valve.
•The heat transfer medium is potable water or contains only
substances that are recognized as safe by the U.S. Food and Drug
Administration (FDA).
•The pressure of the heat transfer medium is maintained less than
the normal minimum operating pressure of the potable water
system.
•The equipment is permanently labeled to indicate that only
additives recognized as safe by the FDA shall be used in the heat
transfer medium.