Bradford White GX1-55S Installation instructions

238-43480-00B REV 12/03
SINGLE-WALL INDIRECT
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
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.
qDo not store or use
gasoline or other
flammable liquids in
the vicinity of this
water heater or any
other appliance.
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For your family’s comfort, safety, and convenience, we
recommend this water heater be installed and serviced by
a plumbing professional.
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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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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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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:
qDO NOT try to light any appliance.
q
DO NOT touch any electric switch; do not use any
telephone in your building.
qImmediately call your gas supplier from a telephone in
another building. Follow the gas supplier’s
instructions.
qIf 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.
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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.
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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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CAUTION
The maximum boiler water supply temperature to the indirect
heat exchanger must not exceed 240°F (116°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…………….….. 3
II-
SPECIFICATIONS………………………………
.8
III-
GENERAL
INFORMATION……………………. 11
IV-
PRE-
INSTALLATION…………………………… 14
V-
WATER
CONNECTIONS……………………….. 19
VI-
ELECTRICAL
CONNECTIONS……………….. 24
VII-
OPERATING
INSTRUCTIONS………………… 26
VIII-
MAINTENANCE………………………………
…. 29
IX-
TROUBLESHOOTING
GUIDE………………… 32
X-
PARTS
LIST………………………………………. 34
NOTES…………………………………………….
.36
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SECTION II
SPECIFICATIONS
Figure 1 –Tank Layout
Table 1: Water Heater Dimension (Inches)
MODEL
ABCDEF
SW-2-30-L22 33-5/8 28-
1/4 34- 3/8 5-3/8
27-
1/2
SW-2-40-L24 36 29-
3/4 36- 3/4 5-3/8
27-
1/2
SW-2-50-L26 36 29-
3/4 36- 3/4 5-3/8
27-
1/2
SW-2-65-L22 59-1/4 53-
1/8 60 5-3/8
27-
1/2
SW-65C-522 59-1/4 53-60 5-3/8
47-
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1/8 3/4
SW-2-80-L24 59 52-
7/8 59- 3/4 5-3/8
27-
1/2
SW-80C-524 59 52-
7/8 59- 3/4 5-3/8
47-
3/4
SW-2-120-L28-
1/462-1/2 55- 3/4 63- 1/4 6-3/8
28-
1/2
SW-120C-528-
1/4 62-1/2 55- 3/4 63- 1/4 6-3/8
48-
3/4
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Table 2: Water Heater Capacities
MODEL
Tank
Capacity
(Gal)
Coil
Volume
(Gal)
Dry
Weight
(Lbs)
Wet
Weight
(Lbs)
SW-2-30-L30 2.6 140 404
SW-2-40-L40 2.6 168 514
SW-2-50-L50 2.6 196 623
SW-2-65-L60 2.6 196 704
SW-65C-558 5.0 265 768
SW-2-80-L75 2.6 224 861
SW-80C-573 5.0 293 920
SW-2-120-L116 2.6 355 1324
SW-120C-5114 5.0 415 1370
Table 3: 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)
SW-2-30-L279 429 4.2 6.7 220,000
SW-2-40-L288 438 4.2 6.7 220,000
SW-2-50-L297 447 4.2 6.7 220,000
SW-2-65-L306 456 4.2 6.7 220,000
SW-65C-5534 820 8.0 12.8 420,000
SW-2-80-L321 470 4.2 6.7 220,000
SW-80C-5546 834 8.0 12.8 420,000
SW-2-120-L357 507 4.2 6.7 220,000
SW-120C-5583 871 8.0 12.8 420,000
NOTES: All ratings based on 200 °F boiler water
temperature and 50 °F potable water inlet temperature.
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Table 4: Water Heater Performance (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 single-wall indirect models.
Accordingly, per Part HLW-101.2, Section IV of the
ASME Boiler and Pressure Vessel Code, all Bradford
White Single-wall Indirect products are exempted from
MODEL
Hot Water
Availability
(Minutes)
Coil Heat
Transfer Area
(Sq Ft)
Pressure
Drop at 12
GPM
(Feet of
Head)
SW-2-30-L5.5 14.2 1.3
SW-2-40-L7.5 14.2 1.3
SW-2-50-L9.0 14.2 1.3
SW-2-65-L11.0 14.2 1.3
SW-65C-510.5 27.2 2.6
SW-2-80-L13.5 14.2 1.3
SW-80C-513.2 27.2 2.6
SW-2-120-L20.8 14.2 1.3
SW-120C-520.6 27.2 2.6
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compliance with the code.
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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.
ADJUSTABLE AQUASTAT –The temperature may be adjusted
from 80°F to 160°F. The aquastat (thermostat) was adjusted to
120°F before the 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 VII –Operating Instructions.” It is further recommended,
in all cases, that the water temperature be set for the lowest
temperature that satisfies your hot water needs. This will also
provide the most energy efficient operation of the water heater and
minimizes scale formation.
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Setting the water heater temperature at 120°F will reduce the risk of
scalds. Some states require settings to specific lower temperatures.
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TEMPERATURE AND PRESSURE RELIEF VALVE—
WARNING
Keep clear of the combination temperature and pressure
relief valve discharge line outlet. The discharge may be hot
enough to cause scald injury. The water is under pressure and may
splash.
For protection against excessive temperatures and pressure, install
temperature and pressure protective equipment required by local
codes, but not less than a combination temperature and pressure
relief valve certified by a nationally recognized testing laboratory
that maintains periodic inspection of production of listed equipment
or materials as meeting the requirements of the Standard for Relief
Valves and Automatic Gas Shutoff Devices for Hot Water
Supply Systems, ANSI Z21.22 and the Standard CAN1-4.4
Temperature, Pressure, Temperature and Pressure Relief
Valves and Vacuum Relief Valves. The combination temperature
and pressure relief valve must be marked with a maximum set
pressure not to exceed the maximum working pressure of the water
heater. The combination temperature and pressure relief valve
must also have an hourly rated temperature steam BTU discharge
capacity not less than the hourly rating of the water heater. The
supplied combination temperature and pressure relief valve, when
properly installed and unrestricted, will discharge the maximum input
produced by a 240°F (116°C) boiler supply temperature. A lower
boiler supply temperature will reduce the input required to be
discharged in the event of excessive potable water temperatures.
Install the combination temperature and pressure relief valve into
the opening provided and marked for this purpose on the water
heater.
Some models may already be equipped or supplied with a
temperature and pressure relief valve. Verify that the combination
temperature and pressure relief valve complies with local codes. If
the temperature and pressure relief valve does not comply with local
codes, replace it with one that does.
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