Bradford White THROUGH-THE-WALL GAS WATER HEATER, TTW Series Install And Operation Instructions
THROUGH-THE-WALL GAS WATER HEATER
A Spanish language version of these instructions is available by contacting
the company listed on the rating plate.
La version espanola de estas instrucciones se puede obtener al escribirle
a la fabrica cuyo nombre aparece en la placa de especificaciones.
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.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
For your family’s comfort, safety and convenience we
recommend Bradford White water heaters to be installed and
serviced by a plumbing professional.
TTW INSTALLATION AND OPERATING
INSTRUCTION MANUAL
FOR YOUR SAFETY
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors and liquids in the
vicinity of this or any other appliance.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or death.
INTERNET VERSION FOR REFERENCE ONLY
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 Through-The-Wall Gas Water Heater. We at Bradford
White 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.
At Bradford White we’re committed to providing you with
the finest water heater made.
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3
TABLE OF CONTENTS
page
GENERAL INFORMATION............................................................... 4
INSTALLATION................................................................................. 5
Locating The Water Heater..................................................... 5
Minimum Clearances............................................................... 8
Venting ...................................................................................... 9
Specifications for
48 Gal, 65,000 BTU input (189.3 L, 19.1 kW/Hr)
65 Gal, 65,000 BTU input (246.1 L, 19.1 kW/Hr)
75 Gal, 76,000 BTU input (283.9 L, 22.3 kW/Hr).......... 12
Specifications for
40 Gal, 40,000 BTU input (151.4 L, 11.7 kW/Hr)
48 Gal, 40,000 BTU input (189.3 L, 11.7 kW/Hr).......... 18
Combustion Air Supply............................................................ 24
Water Connections.................................................................. 26
Gas Connections ..................................................................... 29
Electrical Connections............................................................ 30
Wiring Diagram for
48 Gal, 65,000 BTU input (189.3 L, 19.1 kW/Hr)
65 Gal, 65,000 BTU input (246.1 L, 19.1 kW/Hr)
75 Gal, 76,000 BTU input (283.9 L, 22.3 kW/Hr).......... 31
Wiring Diagram for
40 Gal, 40,000 BTU input (151.4 L, 11.7 kW/Hr)
48 Gal, 40,000 BTU input (189.3 L, 11.7 kW/Hr).......... 32
GENERAL OPERATION.................................................................... 33
Lighting and Shutdown Instructions..................................... 34
Thermostat Adjustment........................................................... 35
Burner Flame Check................................................................ 36
MAINTENANCE................................................................................ 37
PARTS LIST DRAWING.................................................................... 40
PARTS LIST...................................................................................... 40
INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND
SPACE HEATING.............................................................................. 41
VENT PIPE PREPARATION AND JOINING ...................................... 42
NOTES.............................................................................................. 44
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GENERAL INFORMATION
This gas -fired water heater’s design is certified by CSA International under the
American National Standard Z21.10.1 - (as indicated on the rating plate) and
CSA 4.1-M - (as indicated on the rating plate).
This water heater must be installed in accordance with local codes or, in the
absence of local codes, the National Fuel Gas Code, ANSI Z223.1-Latest
Edition) and/or in Canada CAN/CGA B149 Installation Codes (Latest Editions).
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 any damage
resulting from alteration and/or failure to comply with these instruc tions.
This water heater is not design certified for installation in a mobile home. Such an
installation may create a hazardous condition and will nullify the warranty.
Do not use this appliance if any part has been submerged in water. You should
contact a qualified service technician to inspect the appliance and to replace any
part of the control system including the combination gas control which has been
submerged in water.
Make sure that you check the rating plate and combination gas control on the
water heater to be certain that the type of gas being supplied corresponds with
the marking on the rating plate and combination gas control.
CAUTION
Incorrect operation of this appliance may create a hazard to life and
property and will nullify the warranty.
DANGER
Do not store or use gasoline or other flammable, combustible, or
corrosive vapors and liquids in the vicinity of this or any other
appliance.
IMPORTANT
Before proceeding, please inspect the water heater and its components for
possible damage. DO NOT install any damaged 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.
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5
General Information continued -
A sacrificial anode is used to extend tank life. The 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 the 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.
INSTALLATION
Locating The Water Heater
DO NOT install the water heater in any location where gasoline or
flammable vapors are likely to be present.
Water Heaters in residential garages must be installed so that all burne r(s)
and burner ignition device(s) are located not less than 18 inches (46 cm)
above the floor and must be located or protected to avoid physical
damage. For other installations refer to local codes. In the absence of
local codes, the water heater must be installed in compliance with the
National Fuel Gas Code, ANSI Z223.1 - (Latest Edition) and/or in Canada,
CAN/CGA B149 Installation Codes (Latest Editions).
The location of this water heater is of the utmost importance. Before installing
this water heater, read 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 gas and water supply lines. DO
NOT locate the water heater where water lines could be subjected to
freezing temperatures. Make sure the cold water pipes are not located
directly above the gas control so that condensate during humid weather
does not drip on the controls.
Installation (Locating The Water Heater) continued -
WARNING
Water heaters are heat producing appliances. To avoid damage or injury, do not
store materials against the water heater or vent -air intake system. Use proper
care to avoid unnecessary contact (especially by children) with the water heater
and vent -air intake components. UNDER NO CIRCUMSTANCES MUST
FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE
USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR
INTAKE SYSTEM OR IN ANY LOCATION FROM WHICH FUMES COULD
REACH THE WATER HEATER OR VENT-AIR INTAKE SYSTEM.
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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
and sodium chloride, waxes and process chemicals. 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.
WARNING
Liquefied petroleum gases/propane gas are 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 neighbor’s
telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
DO NOT OPERATE APPLIANCE UNTIL THE LEAKAGE IS
CORRECTED!
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7
Installation (Locating The Water Heater) continued-
The water heater must be located close enough to the outside wall to keep the
venting distance within the maximum distance described in the installation
instructions. Read the venting section in this installation instruction manual
before locating 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
adequately piped for proper drainage must be installed under the water heater.
The pan must not restrict combustion air flow. The drain pan must be no greater
than 1-½ inches (3.8 cm) deep and have a minimum length and width of at least
four (4) inches (10.2 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 (1.9 cm) in diameter and pitched for proper drainage.
It is recommended that a minimum clearance 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.
WARNING
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 the 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
neighbor’s telephone.
• Gas detectors are available. Contact your gas supplier, or plumbing
professional, for more information.
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Installation (Minimum Clearances) continued -
Minimum Clearances
This installation must allow access to the front of the water heater and adequate
clearance must be provided for servicing and operating this water heater. The
water heater may be installed on either a combustible or non-combustible floor. If
the water heater is to be installed directly 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. The minimum clearances to combustibles for this water heater are: zero
(0) inch (0 cm) from the sides and rear, five (5) inches (12.7 cm) from the front of
the jacket, zero (0) inch (0 cm) from the vent connector and fifteen (15) inches
(38.1 cm) from the jacket top.
WARNING
Failure to adhere to these installation and operating instructions may
create a hazard to life and property and will nullify the warranty.
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Venting
This venting section is divided into two parts. Part I will cover venting
specifications for 48 Gal - 65,000 BTU (181.7 L - 19.1 kW/Hr), 65 Gal -65,000
BTU (246.1 L - 19.1 kW/Hr), and 75 Gal - 76,000 BTU (283.9 L - 22.3 kW/Hr)
models. Part II will cover venting specifications for 40 Gal -40,000 BTU
(151.4 L - 11.7 kW/Hr) and 48 gal - 40,000 BTU (181.7 L - 11.7 kW/Hr)
models. Refer to the rati ng plate located on the water heater for correct
model identification.
The Nation Fuel Gas Code ANSI Z223.1-(Latest Edition), CGA/CAN B149 Installation
Code, and local codes have specific requirements for the location of the vent terminals
on vertical walls. The guidelines listed below are from the National Fuel Gas Code.
Consult the local codes, and/or National Fuel Gas Code ANSI Z223.1-(Latest Edition),
or CGA/CAN B149 Installation Code to determine if there are any additions or changes
to the following specifications.
(A) The vent terminal must terminate at least 3 feet (.91 m) above any forced
air inlet duct located within 10 feet (3 m). Exception: This provision shall
not apply to the combustion air intake of a direct vent appliance.
(B) The vent terminal must terminate at least 4 feet (1.2m) below, 4 feet (1.2
m) horizontally from, or 1 foot (.31 m) above any door, window, gravity air
inlet into the building.
(C) The bottom of the vent terminal must be located at least 1 foot (.31 m)
above ground and above the anticipated snow level.
(D) The vent terminal must not terminate over a public walkway or over an
area where condensate or vapor could create a nuisance or hazard or
could be detrimental to the operation of regulators, relief valve, or other
equipment.
(E) The water heater location must provide easy access for the entire length
of the vent connector.
(F) The vent system must be inspected at least once a year to ensure
against leakage of exhaust products.
Exceptions For Installations in Canada:
(A) The vent terminal must be located at least 1 foot (.31 m) from any window
or door which can be opened in any building, any non-mechanical air
supply inlet to any building, or the combustion air to any inlet other
appliance.
(B) The vent terminal must be located at least 6 feet (1.8 m) from any
mechanical air supply inlet to the building.
(C) The vent terminal must not terminate above a meter/regulator assembly
within 3 feet (.91 m) horizontally of the vertical centerline of the regulator
and must be at least 6 feet (1.8 m) from any gas service regulator vent
outlet.
(D) The vent terminal must be at least 7 feet (2.1 m) above a paved sidewalk
or a paved driveway located on public property.
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(E) The vent terminal must not terminate above a paved sidewalk or a paved
driveway which is located on private adjacent property.
Venting (Part I) continued -
Venting System Condensation
Condensate formation does not occur in all installations of power vented heaters,
but should be protected against on installations where condensation can form in
the venting system.
Formation of condensation in the venting system of Power Vented water heaters
is dependent upon installation conditions including, but not limited to:
ambient temperature and humidity of installation location;
ambient temperature and humidity of venting space;
vent distance and slope;
and product usage.
In order to effectively control condensate from adversely affecting the mechanical
components of the water heater several methods may be employed:
1. For horizontal installations the vent pipe can be installed with a
downward slope (not less than 1/8" nor greater than ½” per foot
maximum) and away from the blower motor.
2. In order to prevent condensate from draining back into the blower (vertical
or horizontal runs), a fitting and drain hose is available as a condensate
trap kit (see Table 1 for service part numbers). The all rubber fitting with
drain outlet mounts directly to the blower motor outlet and is secured
with two hose clamps (one to the blower motor outlet and the other to the
vent connector). The plastic tubing is provided to drain any accumulated
condensate away from the water heater and to a suitable drain. The kit
comes complete with instructions for proper installation of the fitting.
Table 1
Model Service Part
2” (5.1 cm) Blower Outlet (exhaust) 239-42742-00
3” (7.6 cm) Blower Outlet (exhaust) 239-42743-00
Venting (Part I) continued -
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3. In order to prevent condensate from draining back into the blower (vertical
or horizontal runs), a drain tee and condensate trap can be installed in
the horizontal vent as close as practical to the blower vent connection
(see Figure 1). The condensate disposal tube should be installed to
drain any accumulated condensate away from the water heater and to a
suitable drain. The drain tee and condensate hose are not available from
Bradford White, but should be available through your local distributor.
Figure 1
Venting (Part I) continued -
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Part I - Venting Specifications for:
48 Gallon, 65,000 BTU input (181.7 L, 19.1 kW/Hr)
65 Gallon, 65,000 BTU input (246.1 L, 19.1 kW/Hr)
75 Gallon, 76,000 BTU input (283.9 L, 22.3 kW/Hr)
This water heater is a power vented appliance and is designed to vent its
products of combustion through 3” (7.6 cm) or 4” (10.2 cm) diameter Schedule 40
(solid or cellular core) PVC pipe to the outdoors. This water heater may be
either vented through the wall or vertically through the roof. Use a 3” (7.6 cm) to
4” (10.2 cm) reducer to connect to the vent outlet when using 4” (10.2 cm) PVC.
Apply PVC cement at PVC locations. Table 2 lists the maximum vent lengths for
this water heater using 3” (7.6 cm) PVC. If possible, locate the water heater so
that the venting length and number of elbows are kept to the minimum distance
necessary to reach the outside. If the installation requires venting lengths that
exceed the lengths listed for 3” (7.6 cm) PVC in Table 2, then use 4” (10.2 cm)
PVC for the vent connector. Table 3 lists the venting distances allowed with 4”
(10.2 cm) diameter PVC pipe. When venting with 4” (10.2 cm) PVC, use a 4”
(10.2 cm) to 3” (7.6 cm) reducer to exit through the building wall with 3” (7.6 cm)
PVC. Use the 3” (7.6 cm) vent terminal supplied with the water heater to
terminate on the outside of the building. If the length of 3” (7.6 cm) PVC needed
to go through the wall is greater than 14” (35.5 cm), use 4” (10.2 cm) to go
through the wall and reduce to 3” (7.6 cm) PVC immediately after exiting the
outside wall. Refer to the venting illustrations on the following pages. Make sure
the vent pipe terminal elbow fitting is at least 1” (2.5 cm) away from the edge of
the wall.
TABLE 2 - VENT CONNECTOR LENGTHS
FOR 3” (7.6 cm) DIAMETER PVC
Terminating # of 90° Elbows
(excluding vent
terminal)
Maximum
Length
Minimum
Length
Through the Wall 1 40 ft (12.2 m) 2 ft (.6 m)
Through the Wall 2 35 ft (10.7 m) 3 ft (.9 m)
Through the Wall 3 30 ft (9.1 m) 5 ft (1.5 m)
Through the Wall 4 25 ft (7.6 m) 8 ft (2.4 m)
Through the Roof 1 40 ft (12.2 m) 2 ft (.6 m)
Through the Roof 2 35 ft (10.7 m) 3 ft (.9 m)
Through the Roof 3 30 ft (9.1 m) 5 ft (1.5 m)
Through the Roof 4 25 ft (7.6 m) 8 ft (2.4 m)
Venting (Part I) continued -
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TABLE 3 -VENT CONNECTOR LENGTHS
FOR 4” (10.2 cm) DIAMETER PVC
Terminating # of 90° Elbows
(excluding vent
terminal)
Maximum
Length
Minimum
Length
Through the Wall 1 70 ft (21.3 m) 2 ft (.6 m)
Through the Wall 2 65 ft (19.8 m) 3 ft (.9 m)
Through the Wall 3 60 ft (18.3 m) 5 ft (1.5 m)
Through the Wall 4 55 ft (16.8 m) 8 ft (2.4 m)
Through the Wall 5 50 ft (15.3 m) 12 ft (3.6 m)
Through the Roof 1 70 ft (21.3 m) 2 ft (.6 m)
Through the Roof 2 65 ft (19.8 m) 3 ft (.9 m)
Through the Roof 3 60 ft (18.3 m) 5 ft (1.5 m)
Through the Roof 4 55 ft (16.8 m) 8 ft (2.4 m)
Through the Roof 5 50 ft (15.3 m) 12 ft (3.6 m)
NOTE: When using 4” (10.2 cm) PVC, use a 4” (10.1 cm) to 3” (7.6 cm)
reducer and exit the building wall with 3” (7.6 cm) PVC using the 3” (7.6
cm) 90° vent terminal supplied. Two 45° elbows are equivalent to one 90°
elbow.
Figure 2
NOTE: ABS or CPVC pipes may be substituted for PVC pipe. Do not mix
ABS and PVC pipe in the same installation.
Venting (Part I) continued -
IMPORTANT
All of the Venting connections must be leak checked with a soap and
water solution upon initial start up of the water heater. Any leaks must
be repaired before continuing operation of the water heater.
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THROUGH THE WALL VENTING:
Cut a 3 1/2 in. (8.9 cm) diameter hole in the wall at the point where the vent
connector is going to pass through the wall. Use the proper cement to secure
the 90° vent terminal provided with the water heater to the vent connector. The
distance between the edge of the 90° vent terminal and the exterior wall (see
Figure 3) must be 1 in. (2.5 cm). Use the proper cement and assembly
procedures to secure the vent connector joints between the terminal and the
blower outlet. Provide support brackets for every 3 feet (.91 m) of horizontal vent.
Figure 3
Venting (Part I) continued -
THROUGH THE ROOF VENTING: (VERTICAL VENTING)
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