Bradford White EverHot Tankless Gas Water Heater
For Interior Installation
TG-150I-N(X), TG-180I-N(X), TG-199I-N(X), TG237I-N(X) & TG-237I-N(X)A
WARNING: If the information in these
instructions is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or death
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of this
or any other appliance
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.
Ambler, PA 19002
Tech. Service (800) 334-3393
Service Part (800) 538-2020
Warranty Service (800) 531-2111
Installation and service must be performed by a
qualified installer, service agency, or gas supplier.
INSTALLATION AND OPERATION INSTRUCTION MANUAL
With Troubleshooting Guide
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
A Spanish language version of these instructions is available by
contacting Bradford White.
La versión espãnola de estas instrucciones se puede obtener al
escribirle a la fábrica cuyo nombre aparece en la placa de.
238-48022-00D 7/11
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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.
Failure to properly install the vent and air intake (if applicable) system could result in property
damage, personal injury, or death.
DO NOT install any damaged venting system components. If damage is evident, please
contact the supplier where the water heater was purchased or the venting manufacturer.
Use only authorized terminals for venting this water heater.
This water heater is equipped 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.
WARNING
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
provided with the appliance before installing, starting-up, operating, maintaining or servicing
this appliance. Keep this manual and literature in legible condition with this water heater 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 a qualified, skilled and
knowledgeable installer or service provider.
Installation is not complete unless a pressure relief valve is installed into the proper location
in the hot water outlet piping of this water heater.
It is the responsibility of the installing contractor to see that all controls are correctly installed
and are properly operating when the installation is complete.
This water heater is NOT suitable for installation on combustible flooring. Install water heater
exactly as shown in this manual.
DO NOT operate this water heater without first being certain it is filled with water.
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WARNING
DO NOT tamper with or alter the water heater and/or controls.
DO NOT operate water heater with jumpered or absent controls or safety devices.
DO NOT operate water heater if any external part has been under water. Immediately call a
qualified service technician to inspect the water heater and to replace any part of the control
system including gas controls, which has been under water.
DO NOT attempt to use this water heater with any gas other than the type listed on the rating
plate. Do not attempt to convert this water heater for use with a gas other than the type for
which it is equipped. Failure to use the proper gas can create an unsafe condition resulting in
property damage, bodily injury, or death. Consult your local gas supplier or gas company if
there are any questions.
DO NOT operate this water heater if the input rate exceeds the rate shown on the water
heater rating plate.
This water heater contains very hot water under high pressure. Do not unscrew any pipe
fittings nor attempt to disconnect any components of this water heater without positively
assuring the water is cool and is not under 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 temperature gauges to determine the temperature. Do not touch any
components unless they are cool.
This water heater must be properly vented and connected to an approved vent system in
good condition. DO NOT operate water heater with the absence of an approved vent system.
A clean and unobstructed vent system is necessary to allow noxious fumes that could cause
injury or loss of life to vent safely and will contribute toward maintaining the water heater’s
efficiency.
This water heater is for indoor installation only. A venting system must be used to supply
outdoor air for combustion to the water heater.
This water heater requires its own separate venting system. DO NOT connect the exhaust
vent into an existing vent pipe or chimney.
Water heater materials of construction, products of combustion and the fuel contain carbon
monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful substances which can
cause death or serious injury and which are known to the state of California to cause cancer,
birth defects and other reproductive harm. Always use proper safety clothing, respirators and
equipment when servicing or working nearby this water heater.
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WARNING
Liquefied petroleum gases/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. 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 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!
WARNING
Flammable items, pressurized containers or any other potential fire hazardous articles must
never be placed on or adjacent to the water heater. Open containers of flammable material
must not be stored or used in the same room with this water heater.
DO NOT USE AN INSULATION BLANKET WITH THIS WATER HEATER. This water heater
meets or exceeds the ASHRAE/IES 90.1b (latest edition) standards with respect to insulation
and standby loss requirements.
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SECTION II: SPECIFICATIONS
Table 1. Specifications.
Model
TG-150I-N(X)
TG-180I-N(X)
TG-199I-N(X)
TG-237I-N(X)
TG-237I-N(X)A
Minimum Rate Btu/h
15,000
19,000
199,000 Natural
Gas
Maximum Rate Btu/h
150,000
180,000
237,000
190,000
Propane
0.6-5.0 GPM
(2.3-18.9
L/min)
0.6-7.5 GPM
(2.3-28.4 L/min) (2.3-35.5 L/min)
0.6-9.4 GPM
0.6-9.8 GPM
(2.3-37 L/min)
Flow Rate (Min-Max) *
Flow Rate (45F rise)
5.0 GPM
(18.9 L/min)
6.7 GPM
(25.4 L/min)
7.1 GPM
(27.0 L/min)
8.5 GPM
(32.2 L/min)
Default Temperature Setting
Maximum Temp Setting (commercial **)
Maximum Temp Setting (residential)
Minimum Temperature Setting
Weight
104°F (40°C)
160°F (71°C)
180°F (82°C)
185°F (85°C)
120°F (49°C)
96°F (36°C)
50 lb (23 kg)
0.82
98°F (37°C)
55 lb (25 kg)
N/A
Energy Factor
0.82
0.82
84%
49 dB
79 W
2 W
Thermal Efficiency
Noise level (inside rating)
Normal
53 W
65 W
99 W
Electrical
Consumption
Standby
Anti-frost
100 W
100 W
116 W
Protection
By-Pass Control
Fixed
Electronic
Natural Gas
Propane
5.0 inch W.C.
8.0 inch W.C.
Minimum Gas Supply
Pressure
Natural Gas
Propane
10.5 inch W.C.
13.5 inch W.C.
Maximum Gas Supply
Pressure
Type of Appliance
Operation
Direct Vent, Temperature controlled continuous flow gas water heater
With or without remote controls, mounted in kitchen, bathroom, etc.
Natural Gas or Propane-Ensure unit matches gas type supplied at the installation location.
Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT
Direct Spark Ignition
Approved Gas Type
Connections
Ignition System
Electric Connections
Water Temperature Control
Water Heater: AC 120 Volts, 60Hz. Remote Control: DC 12 Volts (Digital)
Simulation Feedforward and Feedback
Minimum Water Supply Pressure
Maximum Water Supply Pressure
Remote Control Cable
20 PSI (Recommended 30-80 PSI for maximum performance)
150 PSI
Non-Polarized Two Core Cable (Minimum 22 AWG)
ENERGY STAR® Qualified
Yes (Both U.S. and Canada)
No
* Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature.
** For commercial and hydronic applications requiring higher temperatures. Requires the use of an optional controller
(P/N 239-47805-00).
Bradford White Corporation is continually updating and improving products. Therefore, specifications are subject to
change without prior notice.
The maximum inlet gas pressure must not exceed the value specified by the manufacturer. The minimum value
listed is for the purpose of input adjustment.
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Dimensions
TG-150I-N(X), TG-180I-N(X), TG-199I-N(X)
TG-237I-N(X), TG-237I-N(X)A
Table 2. Water Heater Dimensions (Approx.).
TG-150I-N(X)
TG-237I-N(X)
TG-237I-N(X)A
in. (mm)
TG-180I-N(X)
TG-199I-N(X)
DIM
DESCRIPTION
in. (mm)
A
B
C
D
E
F
G
H
I
Width
14 (355.6)
9 5/8 (244.5)
22 7/8 (582)
25 1/2 (648.2)
3 5/8 (91)
4 3/8 (110)
2 7/8 (70)
1 1/8 (27)
4 3/8 (109)
3 1/2 (89)
1 5/8 (40)
2 (50)
18 1/2 (470)
9 1/8 (230.5)
23 5/8 (600)
25 1/8 (639.8)
4 3/8 (110)
2 3/8 (61)
3 3/4 (94)
2 (52)
Depth *
Height - Unit
Height - with brackets
Hot Water Outlet - from wall *
Hot Water Outlet - from center
Cold Water Inlet - from wall *
Cold Water Inlet - from center
Gas Connection - from wall *
Gas Connection - from center
From base to gas connection
From base to cold connection
From base to hot connection
Air intake to exhaust
2 1/8 (56.2)
4 3/8 (110)
1 5/8 (40)
2 (50)
J
K
L
1 5/8 (41)
n/a
1 5/8 (41)
6 (152.4)
* This is the minimum dimension from the wall. The wall bracket is adjustable to allow an additional 1 5/8 in. (40 mm).
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TG-237I-N(X)
TG-237I-N(X)A
TG-150I-N(X)
TG-180I-N(X)
TG-199I-N(X)
Water Flow Rate (gpm)
Figure 1. Graph Showing Pressure Drop v. Water Flow Rate.
TG-237I-N(X & TG-237I-N(X)A
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
TG-199I-N(X)
TG-180I-N(X)
TG-150I-N(X)
0
25
50
75
100
125
150
Temperature Rise (°F)
Figure 2. Graph Showing Water Flow Rate v. Temperature Rise.
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SECTION III: INSTALLATION INSTRUCTIONS
WARNING
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A
LICENSED PLUMBER. Plumbing, air supply, venting, gas supply and electrical work are required.
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 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 telephone in another building.
Gas detectors are available. Contact your gas supplier or plumbing professional for more
information.
Liquefied petroleum gases/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. 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 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!
WARNING
This water heater must be located in an area where leakage of the heat exchanger coil, water line
connections, or the 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 depth must be suitable for draining and
collecting water, 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 ¾ inch (1.9 cm) in diameter and pitched for proper drainage.
CAUTION
If building cold water supply has a back-flow preventer, check valve or water meter with check valve,
provisions for thermal expansion of water in the hot water system must be provided.
WARNING
Pressure relief valve discharge piping must be piped near floor to eliminate potential of severe
burns. Do not pipe in any area where freezing could occur. Do not install any shut-off valves, plugs
or caps to the temperature and pressure relief valve or piping.
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DANGER
Temperature setting should not exceed safe temperature at fixtures. See water temperature control
warning in the “Temperature Adjustment” section of this Installation and Operation Instruction
Manual. If higher preheat temperatures are necessary to obtain adequate booster output, add an
ASSE approved mixing valve for hot water supplied to fixtures.
WARNING
Residential use water heaters are suitable for potable water heating only. DO NOT use a
residential use water heater for space heating or combination space heating/domestic water
heating. Commercial use water heaters may be used for space heating or combination space
heating/domestic water heating. Refer to the instructions for space heating in this Installation
and Operation Instruction Manual.
This water heater is not suitable for use in pool or spa applications.
The water heater must be installed indoors using the proper venting system components for
combustion air supply and discharging flue products to the outdoors. Contact the supplier of
this water heater or Bradford White for venting components.
DO NOT operate this water heater without the vent piping connected.
All pipe joints should be taped to help prevent leakage around joints.
UNPACKING
INSPECT SHIPMENT carefully for any signs of damage.
1. All equipment is carefully manufactured, inspected and packed.
2. Any claims for damage or shortage in shipment must be filed immediately with Bradford White
Corporation and noted on the Bill of Lading.
WATER HEATER LOCATION
1. The TG series water heaters may be vented either horizontally through an outside wall or
vertically through the roof using the venting components designed for this water heater. Contact
your Bradford White supplier or those suggested in this manual to order the required venting
components. The venting system should be as short as possible. Refer to the Venting System
Installation section of this Installation and Operation Instruction Manual for the vent terminal
location restrictions before choosing a final location for the water heater.
2. The water heater must be installed on a wall capable of supporting at least 55 pounds (25 kg).
Locate the water heater at a height convenient for servicing and above the reach of small
children.
3. Refer to Table for minimum clearances to combustibles.
4. If the water heater is installed in a confined space, such as a closet, ventilation air must be
provided to prevent increased room temperature. Excessive ambient temperatures surrounding
the water heater may shorten the life of the controls.
REMOVE CARTON
Move water heater to a location near where it will be installed. Carefully slide water heater out from the
carton and remove all the contents.
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MOUNT WATER HEATER ON THE WALL
Determine the proper height and location for the water heater to be installed. Consider the venting
system, as well as the water and gas connections. Allow enough room for servicing the water heater and
maintain the clearances from combustible materials. The water heater is supported on the wall by means
of a top and bottom slotted angle bracket. For convenience, the center hole of the bracket is slotted so
that a center screw may be first installed in the wall for hanging the water heater on the wall. Two more
screws are then added on the ends of the bracket to secure the water heater. Wall anchors should be
used for the bracket holes unless the bracket lines up with a stud. As an alternative, a suitable piece of
plywood may be cut to span the wall studs and the brackets fastened to the plywood. Make sure the
anchors are rated to support the 55 pound (25 kg) weight of the water heater.
Table 3. Water Heater Clearances.
to Combustibles
to Non-Combustibles
TG-150I-N(X)
TG-180I-N(X)
TG-199I-N(X)
TG-150I-N(X)
TG-180I-N(X)
TG-199I-N(X)
TG-237I-N(X)
TG-237I-N(X)A
TG-237I-N(X)A
TG-237I-N(X)A
Top of
Water
Heater
6 inches
(152 mm)
12 inches
(305 mm)
2 inches
(51 mm)
2 inches
(51 mm)
Back of
Water
0 (zero)
0 (zero)
0 (zero)
0 (zero)
Heater
Front of
Water
Heater
6 inches
(152 mm)
24 inches
(610 mm)
6 inches
(152 mm)
24 inches
(610 mm)
Sides of
Water
Heater
2 inches
(51 mm)
2 inches (51
mm)
1/2 inch
(13 mm)
1/2 inch
(13 mm)
Floor/
Ground
12 inches
(305 mm)
12 inches
(305 mm)
12 inches (305
mm)
2 inches
(51 mm)
Vent
0 (zero)
4 inches *
0 (zero)
0 (zero)
*4 inches (102 mm) for enclosed area; 1 inch (26 mm) for unenclosed area
NOTICE
The recommended minimum clearance for servicing is 24 inches (608 mm) in front of the water
heater.
WARNING
For all closet installations, follow the minimum clearances to combustibles whether the closet door is
combustible or non-combustible.
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State Regulations
NOTICE BEFORE INSTALLATION
Bradford White direct-vent appliance must be installed by a state qualified or licensed contractor. If you
are not properly trained, you must not install this unit.
IMPORTANT: In the State of Massachusetts (248CMR 4.00 & 5.00)
For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or
structure used in whole or in part for residential purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above
finished grade in the area of venting, including but not limited to decks and porches, the following
requirements must be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side
wall horizontal vented gas fueled equipment, the installing plumber or gas fitter must observe that
a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor
level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter
must observe that a battery operated or hard wired carbon monoxide detector with an alarm is
installed on each additional level of the dwelling, building or structure served by the property
owner to secure the services of qualified licensed professionals for the installation of hard wired
carbon monoxide detectors. It is the responsibility of the property owner to secure the services of
qualified licensed professionals for the installation of hard wired carbon monoxide detectors.
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a
crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery
back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision cannot be met at the time of
completion of installation, the owner shall have a period of thirty (30) days to comply with
the above requirements; provided, however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an alarm must be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required
in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed
and IAS certified.
3. SIGNAGE. A metal or plastic identification plate must be permanently mounted to the exterior of
the building at a minimum height of eight (8) feet above grade directly in line with the exhaust
vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign
must read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW.
KEEP CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled
equipment shall not approve the installation unless, upon inspection, the inspector observes
carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR
5308(2)(a)1 through 4.
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SECTION IV: WATER CONNECTIONS
WARNING
Failure to install and maintain a new, listed pressure relief valve will release the manufacturer from
any claim, which might result from excessive temperature and pressures.
Keep clear of the pressure relief valve discharge line outlet. The discharge may be hot enough to
cause scald injury. The water is under pressure and may splash.
WARNING
DO NOT reverse the inlet and outlet (cold and hot water) connections on the water heater. This may
cause a hazardous operating condition or the water heater may be inoperable
WATER QUALITY
The EverHot water heater must have the water quality within the following limits for long life and reliable
operation. The water supply should be tested to make sure the quality is within the specified limits. If
there is a problem with the water quality, contact your local water conditioning company for equipment to
condition the water supply to this water heater.
NOTICE
Operating this water heater with water conditions outside the specified limits will void the warranty.
Table 4. Maximum Levels for Water Quality.
TDS
(Total
Dissolved Hardness
Total
Description
pH
Aluminum Chlorides Copper
Iron
Manganese
Zinc
Solids)
Up to
11.7
grains
Up to
0.3
ppm
Maximum
Levels
6.5 to Up to 500
Up to 0.2
ppm
Up to
250 ppm 1.0 ppm
Up to
Up to 0.05
ppm
Up to 5
ppm
8.5
ppm
Note: 1 ppm = 1 mg/L
NOTICE
If the EverHot water heater is operated under hard water conditions without a water conditioner, the
diagnostic code “LC” may flash on the water heater’s control. This code means the heat exchanger coil
is beginning to accumulate mineral deposits and MUST be flushed (see Section IX, “Flushing Procedure
for Mineral Scale Removal…”). Contact your installer for a qualified service technician to flush the heat
exchanger. A water conditioner may be needed to prevent this condition from re-occurring.
CAUTION
Failure to flush the water heater when “LC” is flashing will cause damage to the heat exchanger.
Damage caused by mineral scale build up is not covered by the water heater warranty.
INSTRUCTIONS FOR CONNECTIONS
1. BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY
VALVE. After shutting off the main water supply, 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. The COLD water inlet and HOT water outlet are identified on the bottom casing of
the water heater. Make the proper plumbing connections between the water heater and the
plumbing system to the house. All soldering materials and piping must be compatible with
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potable water. Unions should be installed on both the hot and cold water lines for future servicing
and disconnection of the water heater. Install a shut-off valve in the cold water supply line.
2. In order to service the water heater in the event the heat exchanger needs to be flushed of
mineral deposits, tee fittings with shut-off valves and service connections to hoses should be
installed. Also, install a shut-off valve to the hot water supply to isolate the service tee fittings. A
plumbing installation kit, which includes these fittings and a pressure relief valve, is available from
your supplier. Refer to the piping diagrams in Section IV, “Water Connections.”
3. Install a pressure relief valve on a tee connection from the hot water outlet piping from the water
heater. Refer to the piping diagrams (Figure and Figure ) and pressure relief valve warning in
Section IV, “Water Connections.”
4. In cold climates, where piping can freeze during an extended power failure, drain solenoid valves
should be installed on the cold and hot water supply lines to allow water to drain from the water
heater when power is interrupted. Refer to the piping diagram (Figure ) “Recommended Piping
for Power Failure Freeze Protection” in Section IV, and contact your Bradford White dealer if
assistance is needed.
5. 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 must be made to control thermal expansion.
DO NOT operate this water heater in a closed system without provisions for controlling thermal
expansion. Warranties do not cover damages from thermal expansions, such as pressure bulges
and/or deformities. Your water supplier or local plumbing inspector should be contacted on how
to control this situation.
6. Purge the cold water line prior to connecting to the water heater to remove debris. Debris will
clog the mesh strainer of the inlet filter. The inlet strainer prevents debris from damaging the flow
sensor or clogging the coil. It may need to be cleaned periodically and should be cleaned after
the initial operation. DO NOT operate the water heater without the filter in place. In areas where
sediment may be periodically present in the water supply, a Y-type strainer (#20 mesh) or
cartridge filter should be installed on the cold water inlet to the water heater to prevent the water
heater fine mesh strainer from getting plugged and restricting water flow.
7. 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.
8. This water heater may also be connected to a circulating pump or storage tank for increased flow
capacity during high demand periods.
9. Commercial installations may require more than one water heater piped together in a manifold to
supply enough capacity for high temperature and high water flow applications. Special controls
are available from your Bradford White supplier for operating more than one water heater
together. These controls stage the operation of the water heaters for the flow rates and control
the amount of flow through each water heater. Order p/n MSA-2M for the electronic manifold
control for the first and second water heater and p/n MSA-2S for the wiring harness for each
additional water heater to be controlled. A maximum of (5) water heaters can be connected
together. Alternatively, to connect only (2) water heaters, an EZConnectTM harness, p/n REU-
EZC-1US, can be used. Instructions are included with these parts.
NOTICE
Take care when using pipe dope or thread sealing tape to avoid clogging the inlet screen and water
flow sensor. Wipe off excess pipe dope from threads before connecting to the water heater.
Commercial dishwashers will require either more than one water heater, or a storage tank to supply a
sufficient volume of hot water.
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Figure 3. Scald Warning.
Table 5. Approximate scald time/temperatures.
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
More than 5 minutes
1½ to 2 minutes
120°F (49C)
125°F (52C)
130°F (54C)
135°F (57C)
140°F (60C)
145°F (63C)
150°F (66C)
155°F (68C)
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
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Figure 4. Recommended Piping for a Basic Installation.
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Figure 5. Recommended Piping for a Circulation Systems.
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Recommended Piping for Power Failure Freeze Protection
As long as electrical power and gas are supplied to the EverHot water heater, freeze protection is
provided to the heat exchanger and piping inside the water heater with ambient temperatures as cold as
-30F (-34C), when protected from direct wind exposure. In the event of a power failure with ambient
temperatures below freezing, the water heater must be drained of all water to prevent freeze damage.
The water heater may be drained manually, or automatically, through the installation of the optional
solenoid valves, as shown in the following illustration. The drain solenoids are recommended for very
cold climates to prevent water heater freeze damage where power failures from ice and windstorms
occur.
The electrical connections for the two solenoids must be tied to the 120 volt main power supply (black
and white wires). When the electrical power to the water heater fails, the ¾” solenoid on the cold water
inlet pipe closes, stopping water flow into the water heater. The drain solenoid opens, allowing the water
heater and connected piping to drain. Make sure the piping from the drain solenoid is run to a suitable
drain or outside the building to prevent water damage.
Figure 6. Recommended Piping for Freeze Protection.
CAUTION
Heat trace all water pipe and fittings located outside the home (attic, crawl space) or building
structure. All pipe and fittings shown below dashed line (see Figure ) should be located inside home
or building structure. The vacuum breaker line should be located inside the building structure.
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PRESSURE RELIEF VALVE
WARNING
Keep clear of the 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 pressure, install pressure protective equipment required by
local codes, but not less than a 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 pressure relief valve must be marked with a maximum set pressure not to exceed the
maximum working pressure of the water heater. The pressure relief valve rating must not be
less than the hourly rating of the water heater.
Install the pressure relief valve into a tee connection from the hot water outlet of the water
heater.
Note: Some models may already be equipped or supplied with an installed pressure relief
valve. Verify that the pressure relief valve complies with local codes. If the pressure relief
valve does not comply with local codes, replace it with one that does. Follow the installation
instructions in the following paragraph.
Install a discharge line so that water discharged from the pressure relief valve will exit within
six (6) inches (15.2 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 combination 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 clearance of four (4) inches (10.2
cm) be provided on the side of the water heater for servicing and maintenance of the
pressure relief valve.
DO NOT place a valve between the pressure relief valve and the hot water outlet!
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Combination Water and Space Heating Applications – Commercial Use Water Heaters Only
Commercial use water heaters may be used for space heating or combination space heating/potable water
heating applications, provided the following requirements and recommended piping diagrams are carefully
followed.
WARNING
The following instructions must be carefully followed to assure safe and reliable operation of the
water heater. All piping components connected to this water heater must be suitable for use with
potable water. In Massachusetts, space heating piping length must not exceed 50 feet. Toxic
chemicals, such as those used for boiler treatment, must not be introduced into potable water used
for space heating. This water heater must not be connected to an existing heating system or
component(s) previously used with a non-potable water heating appliance. When the system
requires water for space heating at temperatures higher than required for other means, an ASSE
approved mixing valve must be installed to temper the water for those uses in order to reduce the
scald hazard potential.
1. Only commercial use water heaters may be used for combination water heating/space heating
applications. Residential use water heaters will not be covered under warranty for water heating/space
heating applications.
2. The temperature setting of the water heater thermostat must not exceed 160F.
3. In combination space heating/potable water heating applications that require higher water temperatures
than normally used for potable water uses, an ASSE approved thermostatic mixing valve must be
installed to temper the water for those uses in order to reduce the scald hazard potential.
4. In order to assure adequate flow through the water heater, follow the recommended piping diagram and
circulator specifications (see Figure ).
5. An expansion tank will be required in all space heating applications.
6. A Y-type mesh strainer (#20 mesh screen) should be installed on the cold water inlet of the water heater
to prevent clogging of the fine mesh screen on the water heater cold water inlet connection.
7. A water softener must be used if the water supply has a tested hardness level above 10 grains of
hardness.
8. All piping must be ¾” copper or larger.
9. All components must be suitable for use with potable water.
10. The water heater should be located as close as practical to the space heating heat exchanger.
11. A check valve should be located after the circulator(s) to prevent backflow during potable water demands.
12. A heat exchanger may be required to separate the potable water from the space heating circuit in certain
applications.
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Note: in Massachusetts, the following must be done:
Tempered potable water must meet temperatures in 248 CMR.
All water piping must be insulated in accordance with 780 CMR (Massachusetts energy code).
50 feet maximum distance from water heater to space heating load (developed length).
Piping loop between water heater and heating load must be in compliance with 248 CMR.
All circulators must use an electronically controlled timer that activates every 6 hours for 60 seconds.
Figure 7. Recommended Piping for Combination Water and Space Heating Applications.
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SECTION V: VENTING
WARNING
The venting system must be properly installed. Failure to properly install the vent system could
result in property damage, personal injury, or death.
Do not install damaged venting system components. If damage is evident, please contact the
supplier where the water heater was purchased or the venting manufacturer for replacement parts.
Use only the vent terminals and vent/air intake components required for venting this water heater.
The water heater requires its own separate venting system. Do not connect the exhaust vent into an
existing vent pipe or chimney.
All vent pipe joints must be taped with aluminum tape to prevent leakage. Make sure all pipe
connections are firmly pressed together so that the gaskets make a tight seal.
All of the exhaust venting connections must be leak checked with a soap solution upon initial start up
of the water heater. Any leaks must be repaired before continuing operation of the water heater.
Do not terminate the venting where noise from the exhaust or intake will be objectionable. This
includes locations close to or across from windows and doors. Avoid anchoring the vent and intake
pipes directly to framed walls, floors, or ceilings unless rubber isolation pipe hangers are used. This
prevents any vibrations from being transmitted into the living spaces.
Do not exceed the venting distances or the number of elbows listed in this manual. Exceeding the
maximum venting distances may cause the water heater to malfunction or cause an unsafe
condition.
CAUTION
The vent shall terminate a minimum of 12 inches above expected snowfall level to prevent blockage
of the vent termination.
NOTICE
Before beginning installation of any vent pipe components, read the vent pipe manufacturer’s
installation instructions.
The water heater must be protected from freezing downdrafts or drained during shutdown periods.
Provide protection for the building materials from degradation caused by flue gases from the exhaust
vent terminal.
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VENTING
The venting instructions must be followed to avoid restricted combustion or recirculation of flue gases.
Such conditions cause sooting or risks of fire and asphyxiation.
Models TG-150I-N(X), TG-180I-N(X), and TG-199I-N(X) are a direct vent design with a single coaxial vent
tube in which the flue products are discharged to the outdoors through the center flue tube and
combustion air from outdoors is taken through the outside intake air pipe surrounding the center flue
exhaust pipe.
Models TG-237I-N(X) and TG-237I-N(X)A are a direct vent design utilizing two separate pipes for venting;
and, these models still take their combustion air from the outdoors, as well as discharge their flue
products to the outdoors.
All venting components must be ordered separately from the supplier of this water heater or through the
suppliers listed in this manual. These water heaters must use the venting components designed for
EverHot TG series water heaters. The EverHot standard horizontal vent kit available for this water
heater consists of one 90 horizontal discharge adapter and one horizontal vent termination kit. These
components are suitable for mounting on an outside wall. If longer venting distances are required,
additional venting components are available from the supplier of the suppliers listed in this manual.
NOTICE
The minimum and maximum wall thicknesses for sidewall venting are the following: 4 in. (10.2 cm)
minimum, 20 in. (50.8 cm) maximum.
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Vent / Air Intake Terminal Locations
Direct Vent Terminal Location
Plan the vent system layout so that proper clearances are maintained from plumbing and wiring. Before
the vent is installed, determine the vent pipe termination location as shown below in the Vent Terminal
Location illustration.
Figure 8. Vent / Air Intake Terminal Positions – Minimum Dimensions.
Table 6. Vent Installation Requirements.
Canadian
US
Canadian
US Installations2
Installations1
Installations2
Installations1
36 inches (91 cm) within
a height 15 feet (4.6 m)
above the
Clearance above
grade, veranda,
porch, deck or
balcony
Clearance to each side of
center line extended above
meter/regulator assembly
12 inches
(30 cm)
12 inches (30 cm)
*b
A
B
C
H
I
meter/regulator
assembly
36 inches (91 cm)
for appliances >
100,000 Btuh (30
kW)
12 inches (30 cm)
for appliances >
50,000 Btuh (15
kW)
Clearance to widow
or door that may be
opened
Clearance to service
regulator vent outlet or oil
tank vent
36 inches
(91 cm)
*b
Clearance to non-
mechanical air supply inlet
to building or the
combustion air inlet to any
other appliance
Clearance to
permanently closed
widow
36 inches (91 cm) for
appliances > 100,000
Btuh (30 kW)
12 inches (30 cm) for
appliances > 50,000
Btuh (15 kW).
*b
*b
J
Vertical clearance
to ventilated soffit
located above the
terminal within a
horizontal distance
of 2 feet (61 cm)
from the center line
of the terminal
3 feet (91 cm) above
if within 10 feet
horizontally
Clearance to a mechanical
air supply inlet
6 feet
(1.83 m)
*b
*b
D
E
K
Clearance above paved
sidewalk or paved
driveway located on public
property
Clearance under a
veranda, porch, deck, or
balcony
Clearance to
unventilated soffit
7 feet
(2.13 m)†
*b
*b
*b
*b
*b
*b
L
Clearance to
outside corner
12 inches (30 cm) ‡
F
M
Clearance to inside
corner
36 inches
(91 cm)*a
36 inches
(91 cm)*a
G
1 In accordance with the current CAN/CGA-B149 Installation Codes.
2 In accordance with the current ANSI Z223.1-(Latest Edition)/NFPA 54 National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single-family
dwellings and serves both dwellings.
‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
*a) A minimum clearance value determined by testing in accordance with section 2.20.
*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier.”
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Vent pipes serving power vented appliances are classified by building codes as “vent connectors.”
Required clearances from combustible materials must be provided in accordance with information in this
manual under Location of Water Heater and Clearances, as well as the National Fuel Gas Code and local
codes.
Table 7. Venting Table - Examples of Maximum Venting Distances.
Maximum Straight
Pipe Distance
41 ft (12.5 m)
35 ft (10.7 m)
29 ft (8.8 m)
Maximum Total Equivalent
Length of Vent Pipe
41 ft (12.5 m)
Number of 90º Elbows
0
1
2
3
4
5
6
41 ft (12.5 m)
41 ft (12.5 m)
41 ft (12.5 m)
41 ft (12.5 m)
41 ft (12.5 m)
41 ft (12.5 m)
23 ft (7.0 m)
17 ft (5.2 m)
11 ft (3.4 m)
5 ft (1.5 m)
NOTICE
Each 90º elbow is equivalent to 6 ft (1.8 m) in straight vent pipe length. Each 45 degree elbow is
equivalent to 1.5 ft (0.46 m) in straight pipe length. The total maximum equivalent vent pipe distance
cannot exceed 41 feet (12.5 m). The condensate collector must be used if the venting system height
is more than 5 ft (1.52 m) above the water heater.
VENTING SYSTEM LAYOUT
Refer to the preceding illustration and location requirements for location of the vent terminal and also
local and state codes. In the absence of local codes, refer to the latest edition of the National Fuel Gas
Code ANSI Z223.1/NFPA 54. Keep the venting system as short as possible and keep the number of
elbows used to a minimum. The water heater may be vented directly through the wall (horizontally) or
vertically through the roof. In all cases, the maximum equivalent length of vent pipe allowed is 41 feet
(12.5 m). To calculate the total equivalent feet of vent pipe use the following formula:
D = L + (EL90 x 6) + (EL 45 x 1.5)
For Length in Feet
D = L + (EL90 x 1.83) + (EL45 x 0.46) For Length in Meters
D = Total Equivalent Length of Venting System
L = Length of Straight Section of Vent / Air Intake Pipe (in feet)
EL90 = Number of 90º Elbows.
EL45 = Number of 45º Elbows
The venting table above provides examples of maximum venting distances with various elbow
combinations.
The Bradford White EverHot TG model series has dedicated venting system components, which must
be ordered separately. Review the “Venting System Installation Instructions” and the venting components
later in this manual to determine the venting system layout and parts required. A Standard Vent Kit is
available for outside through the wall venting installations. The Standard Vent Kit consists of: one 90
discharge adapter and one horizontal vent termination kit. If this type of vent installation is not possible,
contact a venting supplier listed in this manual for additional venting components illustrated at the back of
this instruction manual.
If the vent termination height above the water heater exceeds 5 feet (1.5 m), the condensate collector
(integrated into the water heater’s vent connection on the top of the water heater) will be required to
collect condensate from the vent pipe. The condensate collector has a 5/8” outside diameter male metal
tube to connect to a condensate trap (loop) before being routed to a suitable drain.
VENTING SYSTEM INSTALLATION
Reference the preceding section and venting components illustrations at the end of this manual to
determine the parts required for your particular venting system installation. The required venting
component parts are available from the suppliers listed in this manual. Use the Venting System
Installation Instructions supplied with the venting components for detailed instructions on putting together
the venting components.
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Prior to the Installation of the EverHot Direct Vent System
The EverHot TG series water heaters have two adjustable wall mounting support brackets fitted on the
top and bottom of the water heater casing. When installing a “Standard Vent Discharge Kit” to vent
directly out the wall to the back of the water heater, these brackets should be adjusted so that the water
heater is moved out the maximum 2” (5.1 cm) away from the wall. Before cutting the vent terminal to the
required length, ensure that the distance the water heater is away from the wall has been accounted for.
Horizontal Direct Vent Installations
Whenever possible, install the EverHot TG series water heater on or near an outside wall for the shortest
vent with the least number of elbows. The standard vent kit available for this water heater consists of one
90 vent discharge adapter and a horizontal vent termination kit. This kit is for venting directly through an
outside wall.
Figure 9. Standard Vent Kit – Horizontal Direct Vent Installations
(Excludes TG-237I-N(X) and TG-237I-N(X)A models).
For installations on interior walls, venting components may be purchased from the venting suppliers listed
in this manual to extend the venting distance using extension tubes and elbows. Use the formula and
venting table shown previously in this manual to calculate the total equivalent distance of vent pipe. Do
not exceed the maximum of 41 equivalent feet (12.5 m). If the height of the vent pipe is extended 5 feet
(1.5 m) or more above the top of the water heater, the condensate collector must be used. Refer to the
parts list at the end of this manual, as well as the Venting System Installation Instructions supplied with
the venting for available venting components and detailed instructions on fitting the components together.
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Figure 10. Illustration Showing the Maximum Vent Height before the Condensate Collector Must be Used.
Figure 11. Illustration Showing a Horizontal Termination Installation Using the Condensate Collector (and a trap).
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Vertical Direct Vent Installations
The EverHot TG series water heaters can also be installed to vent vertically through the roof using a
vertical discharge adapter, optional vent extension tubes, the condensate collector, a roof terminal, and a
universal lead tile. Use of the condensate collector is required on all vertical venting heights over 5 feet
(1.5 m). Determine the distance in height required from the water heater and order the vent extension
pipes required.
Figure 12. Vertical Vent Installations.
The condensate collector will require a pipe connection with a trap to act as a seal against discharging
flue products into the room. Run the condensate line to a suitable drain.
CAUTION
A trap must be installed after the condensate collector to prevent flue products from leaking into the
room.
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Combustion Blower Dip Switch Settings
To assure optimum efficiency and reduced noise levels, the combustion blower switch has two dip switch
settings. Dip switch number 1, the top dip switch, is shipped from the factory set to the ON position to
compensate for the maximum vent/air intake length.
Depending upon the vent/air intake length of the installation, dip switch number 1 may need to be
adjusted to compensate for the venting system distance.
When the equivalent length of vent pipe, D, is less than 19 feet (5.7 m), move dip switch number 1 to the
OFF position.
When the equivalent length of vent pipe, D, is 19 feet (5.7 m) or more, leave dip switch number 1 in the
ON position.
Dip switch number 1 is located in the top row of dip switches, 1 through 8 on the PC board. See the
following diagram to identify the correct switch. If you do not understand the information concerning the
dip switch settings or the location of the dip switch, contact Bradford White Sales (800-532-4020) or
Technical Service (800-334-3393) for assistance. Use the following examples and the previous
discussion on calculating the equivalent vent length to determine the correct setting for dip switch number
1.
Example #1:
You have 6 feet (1.82 m) of vent pipe and one 90 elbow.
D = 6 + (1 x 6) + (0 x 1.5)
D = 12 feet of equivalent vent pipe
Dip switch number 1 should be moved to OFF position.
Example #2:
You have 15 feet (4.57 m) of vent pipe and two 90 elbows.
Figure 13. Dip Switch
Settings.
D = 15 + (2 x 6) + (0 x 1.5)
D = 27 feet of equivalent vent pipe
Leave dip switch number 1 in the ON position (default setting).
WARNING
Do not alter dip switch number 1 before using the formula and venting charts to determine the
equivalent vent length. All other dip switches with the exception of dip switch number 1, shown in
the illustration, MUST NOT be altered unless instructed to do so. Unauthorized adjustments can
cause property damage, personal injury, scalding, or death.
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Installation of Venting System Components
WARNING
When installing the EverHot TG model series direct vent water heaters, use only EverHot vent/air
intake system kits and components. Installation and service must be performed by a qualified
installer, service agency, or the gas supplier. Installation must meet all state and local codes
regarding installation and location of vent systems for direct vent appliances. In the absence of
local codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas
and Propane Installation Code must be followed. The maximum vent length, as stated in the in this
manual, should never be exceeded. Follow the instructions below and all instructions located in
this manual when installing a vent pipe system. Improper installation of vent piping, or failure to
follow all installation instructions completely, can result in property damage, and/or death.
WARNING
Refer to the Bradford White EverHot TG series water heater Installation and Operation Instruction
Manual for details concerning vent system termination positions/clearances, allowable vent pipe
lengths, and in what position dip switch number 1 should be placed. If you do not understand how to
configure your vent pipe system and/or which position dip switch number 1 should be placed in,
please contact your Bradford White supplier for assistance.
WARNING
All joints in the vent/air intake piping must be taped with aluminum tape at the completion of the
venting system installation to prevent any possible leakage into the room. Make sure all the pipe
connections are firmly pressed together so that the gaskets form a tight seal.
NOTICE
When mounting the water heater on an outside wall, be sure the vent/air intake pipe will exit
between the wall studs. DO NOT cut through the wall studs for the vent/air intake pipe opening.
WARNING
Before installation inspect each vent component for damage and correct seal placement. Do not
attempt to fix or install any damaged vent components.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result in damage to the
water heater or venting system.
Vertical venting must be supported every 5 feet of vertical run and horizontal venting must be
supported every 3 feet of horizontal run of vent pipe length.
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Condensate
When the total vent system length is greater than 5 ft (1.52 m), condensate will form which could damage
the water heater. For vent lengths greater than 5 ft (1.52 m), the condensate collector and a trap must be
installed.
Recommended Vent/Air Intake Terminal Position
Terminals should be so positioned as to avoid products of combustion entering openings into buildings or
other flues or vents.
Figure 14. Requirements for Vent/Air Intake Terminal Positions.
Table 8. Required Clearances for Venting.
* For clearances not specified in ANSI Z223.1 / NFPA 54 or CGA-B149, please use clearances in accordance with
local installation codes and the requirements of the gas supplier .
** For other than Direct Vent Appliance, 4 ft (1.22 m) below or to side of opening; 1 ft (300 mm) above opening.
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General Installation Instructions
Joint Connection
Figure 15. Illustration Showing How to Properly Connect Venting.
Firmly press the vent pipe sections together to ensure that the gaskets properly seal.
Coping with Condensation
Figure 16. Illustration Showing How to Ensure Proper Condensate Drainage.
Make sure that the sockets are pointed 1° upwards in order to keep the gaskets dry.
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Condensate Drain
Every vent system should utilize the condensate collector unless installed with a total vent length of less
than 5 ft (1.52 m). The condensate collector is incorporated into the water heater’s vent connection.
To prevent condensate from draining back to the water heater, the condensate collector and trap should
be used. The trap must be inspected annually for obstructions and water content in the trap. Provisions
must be made to properly drain and dispose of condensate; be aware that condensate is a highly
corrosive substance that could damage metals. The condensate draining hose should be subject to
inspection; kinks must be avoided. Dispose of condensate in accordance with local codes. Minimum
water level in the condensate trap must be 3 in. (75 mm).
Shortening of Vent Extensions
Figure 17. Illustration Showing How to Shorten Vent Extensions.
The aluminum inside pipe should always extend 0.4 in. (10 mm) beyond the white plastic outside pipe on
the male end of the vent extension. Always cut the male end of the vent pipe extension. Do not attempt
to cut the female end.
Figure 18. Illustration Showing How to Determine the Length to Cut Off.
Pipes overlap by 2.5 in. (65 mm). Therefore, when cutting to size, add 2.5 in. (65 mm) to the extension
pipe length (X) needed for installation. Deburr all sharp edges. Otherwise, the gaskets may get
damaged, which can result in the vent system no longer being air tight.
WARNING
Improper installations of vent system and components, or failure to follow all installation instructions,
can result in property damage or serious injury.
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Venting Parts & Dimensions
Components Needed for Direct Vent Applications
Figure 19. Wall Discharge Terminal Plate, Length = 12 in. (305 mm), p/n 223157.
Figure 20. Vent Extensions, (3) Different Lengths.
10 in., p/n 224051
19.5 in., p/n 224052
39 in., p/n 239-224053
Figure 21. (2) 45º Vent Pipe Elbows, Sold in Pairs Only, p/n 224050.
Figure 22. 90º Vent Pipe Elbow, p/n 224063.
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Figure 23. Vent Pipe Clamp, p/n 169044.
Figure 24. Vertical Discharge Roof Terminal, p/n 184118-S.
Figure 25. Pitch Roof Flashing.
1/12 Pitch, p/n 189950
8/12 Pitch, p/n 189952
6/12 Pitch, p/n 189951
Figure 26. Flat Roof Flashing, p/n 146141.
Figure 27. 21” Non-Condensing Horizontal Termination, p/n 223187.
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Installation Instructions - EverHot® Horizontal Discharge Vent System
Identify the Vent Location
Figure 28. Illustration Showing How to Locate the Vent for a Horizontal Discharge.
Steps:
1. Place horizontal discharge adapter on water heater.
2. Mark the position on wall.
3. Or, use template provided with water heater.
4. Cut the hole in the wall, but be sure to cover the top of the water heater to prevent debris from entering
the top of the water heater.
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Measure Dimension to Fit
Figure 29. Illustration Showing How to Determine the Proper Length for the Wall Discharge Terminal.
Figure 30. Illustration Showing How to Properly Cut a Vent Extension.
NOTICE
If the vent system is shorter than 5 ft (1.52 m) and the condensate collector is not used, be sure to install
the wall terminal with a 1° angle to the outside of the building.
NOTICE
The minimum outer cap length is 3.5 in. (90 mm). If needed, the length outside the wall may exceed this
dimension.
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Final Installation of the Vent System
Figure 31. Illustration Showing the Installation of a Horizontal Vent System.
From the outside of the building, slide the wall discharge terminal through the vent wall passage. A
supplied rubber wall plate can be installed on the exterior of the building. Slide the inner wall plate onto
the terminal. If necessary, apply silicon sealant to fill up spaces between vent terminal and the wall. Vent
connections must be firmly pressed together so that the gaskets form an airtight seal.
NOTE
When the total vent system length is greater than 5ft (1.52 m), condensate will form, which could
damage the water heater. For vent lengths greater than 5 ft (1.52 m), the condensate collector and
trap must be used.
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Installation Instructions - EverHot® Vertical Discharge Vent System
Figure 32. Illustration Showing the Installation of a Vertical Vent System.
Identify the Vent Location
Determine the location where the roof discharge terminal will be installed. Be sure to take into account
the angle of the roof and cut the hole with a dimension that allows the vertical discharge roof terminal to
be installed.
Cut the Vent to Fit
Figure 33. Illustration Showing How to Cut the Vertical Vent to Fit.
The terminal can be shortened by removing the components A + B + C. Then, both the inside and
outside pipes should be shortened by the same length, X. Re-assemble the terminal by attaching the
components A, B, and C in the correct order. Be sure to tighten component B securely.
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Mounting the Vent System – Vertical Discharge
Figure 34. Illustration Showing the Installation of Vertical Discharge Venting.
Vent connections must be firmly pressed together, so that the gaskets form an airtight seal. Secure the
system with a vent pipe clamp or perforated hanger iron.
NOTE
When the total vent system length is greater than 5 ft (1.52 m), condensate will form, which could
damage the water heater. For vent lengths greater than 5 ft (1.52 m), the condensate collector and
a trap must be used.
Direct Vent Installation – TG-237I Models Only
The air intake systems consists of field supplied 4 in. diameter stainless steel, Schedule 40 PVC, ABS, or
CPVC pipe. A maximum of 6 ft of semi-rigid flexible aluminum ducting can also be used. Foil wrapped
dryer vent and cell core products are not authorized.
To Connect the Air Intake (See Error! Reference source not found. 35):
1. Drill (2) small holes at the end of the air intake.
2. Slide the pipe over the air intake terminal.
3. Using a level, ensure the pipe is straight up and down.
4. With self tapping screws, attach the pipe to the air intake terminal.
5. Apply a bead of silicone around the pipe and air intake terminal, ensuring an air tight connection.
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1
3
2
4
Figure 35. Illustration Showing the Installation of the Air Intake.
To Connect the Exhaust Vent:
Refer to the venting manufacturer’s installation instructions for the specific exhaust vent system.
Horizontal Discharge for TG-237I Models
The air intake must be located in relation to the exhaust, as shown below. The air intake must angle ¼”
per foot to the termination to prevent entry of rain. The vent termination and air intake must be in the
same pressure zone and face the same direction.
6
”
Vent
8
”
Optional
Intake
Intake
Figure 36. Relationship Between Air Intake and Vent for TG-237I Models.
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Figure 37. Illustration Showing the Installation of Venting for TG-237I Models.
Figure 38. Illustration Showing the Installation of Concentric Vent Termination for TG-237I Models.
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Figure 39. Illustration Showing the Installation of Vertical Terminations for TG-237I Models.
High Altitude Installations
The default setting for the water is 0-2,000 ft (0-610 m) with dip switch numbers 2 and 3 in the OFF
position. If this water heater is installed at a higher altitude, it is necessary to modify the dip switch
settings according to Table .
Table 9. Dip Switch Settings for High Altitude Installations.
0-2000 ft
(0-610 m)
2001-5200 ft
(610-1585 m)
5201-7700 ft
(1585-2347 m)
7701-10200 ft
(2347-3109 m)
Switch No. 2
Switch No. 3
OFF
OFF
OFF
ON
ON
ON
ON
OFF
Switch No.
Switch No.
Switch No.
Switch No.
ON
ON
ON
ON
O
F
F
O
F
F
O
F
F
O
F
F
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
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Figure 40. Template to be Used for Cutting a Hole for the Coaxial Vent Pipe Used on TG-150I, TG-180I, and TG-199I
Models.
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Venting Suppliers
Table 10. Venting Suppliers for TG-150I, TG-180I, and TG-199I Models.
Manufacturer
Bradford White
Rinnai/Ubbink
Heat-Fab
Product
Rolux Vent System
Rolux Vent System
Saf-T Vent SC system
Corr/Guard Vent/Air
Intake System
Metal-Fab
Table 11. Venting Suppliers for TG-237I Models.
Adjustable
Horizontal
Concentric
Termination
Horizontal
Concentric
Termination
Appliance
Adapter
Vertical
Termination Termination
Horizontal
Manufacturer Product
Heat-Fab
Z-Flex
Saf-T Vent 9401AMTK
5400CI
9492
NA
NA
NA
NA
Z-Vent
2SVSNA04.5 2SVSRCF4
2SVSTPX4
ProTech
Systems
FSDVPTB04LH * FSDVWMTP4LH,
FasNSeal
FSAAU4 *
4CGOA
FSRC4 *
FSBS4 *
FSDVWT4
FSEDVWMTP4LH
4CG7HT90
4CG7HT
Metal-Fab
Corr/Guard
4CGSWC
4CGSWMCM
NA
When ordering venting from Bradford White for TG-237I models, choose from the following components:
FSAAU4 - ask for FSAAU4SP (single pack)
FSRC4 - ask for FSVPK4 Variable Pitch Roof Flashing Kit (includes rain cap FSRC4, storm collar, roof
jack, and roof flashing)
FSBS4 - ask for FSBS4SP (single pack)
FSDVPTB04LH - ask for FSDVWMT04LH Kit (includes direct vent pass through FSDVPTB04LH, bird
screen, exterior and interior mounting plates, appliance adapter, 3 foot flexible aluminum duct with 2
clamps, and adjustable vertical length)
When ordering venting from other suppliers, use the following contact information:
Rinnai/Ubbink
Telephone:
Fax:
ProTech Systems, Inc.
(800) 621-9419
(678) 829-1666
Telephone:
(800) 766-3473
(518) 463-7284
Website:
Fax:
(518) 463-5271
E-mail:
Website:
Metal-Fab, Inc.
Telephone:
Heat-Fab
Telephone:
Fax:
(800) 772-0739
(413) 863-4803
(800) 835-2830
(316) 943-2351
E-mail:
Website:
Fax:
E-mail:
Website:
(316) 943-2717
Z-Flex
Telephone:
Fax:
E-mail:
Website:
(800) 654-5600
(888) 889-3539
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SECTION VI: GAS CONNECTIONS
WARNING
Connect this water heater only to the type of gas as shown on the rating plate. Use clean black iron
pipe or equivalent material approved by local codes and ordinances. Dirt and scale from the pipe
can enter the gas valve and cause it to malfunction. The inlet gas line must have at least a 3 in.
(7.62 cm) drip leg (sediment trap) installed as close to the water heater’s gas valve as possible. A
ground joint union must be installed in the gas supply line, as close to the water heater as possible,
to permit servicing of the water heater. Compounds used on the threaded joints of the gas piping
must be resistant to the action of liquefied petroleum gases/propane gas. DO NOT apply pipe dope
to the gas valve inlet, and make certain that no pipe dope has become lodged in the inlet screen of
the gas valve. Extreme care must be taken to ensure no pipe dope enters the gas valve and to
avoid excessive torque when tightening the gas supply line to the gas valve. Excessive torque may
result in cracking of the gas valve housing. The suggested maximum torque is 31.5 ft-lbs. (4.4 kg-
m). The manufacturer of this water heater will not be liable for any damage or injury caused as a
result of a cracked gas inlet as a result of excessive torque.
This water heater and its gas connection must be leak tested before placing the water heater in
operation. Check for gas leaks with a soap and water solution and a brush or a commercial leak
detector fluid. NEVER USE A MATCH OR OPEN FLAME FOR TESTING!
The water heater is not intended for operation at higher than 10.5 inches water column, for natural
gas, 13.5 inches water column for L.P. supply gas pressure. Higher gas supply pressures require
supplemental reducing service regulation. Exposure to higher gas supply pressure may cause
damage to the gas controls, which could result in fire or explosion. If overpressure has occurred,
such as through improper testing of gas lines or emergency malfunction of the supply system, the
gas valve must be checked for safe operation. Make sure that the outside vents on the supply
regulators and the safety vent valves are protected against blockage. These are parts of the gas
supply system, not the water heater.
WARNING
Conversion of this unit from natural gas to L.P. or L.P. to natural gas CANNOT be done in the field.
If the gas supply does not match the type shown on the water heater rating plate, then contact your
supplier for the proper water heater for the building gas supply.
CAUTION
The water heater and individual shut-off valve must be disconnected from the gas supply piping
system during any pressure testing of the system at test pressures in excess of ½ psi (3.5 kPa).
The water heater must be isolated from the gas supply piping system by closing its manual shutoff
valve during any pressure testing of the gas supply system at test pressures equal to or less than ½
psi (3.5 kPa). The supply line must be capped when not connected to the water heater.
If copper supply lines are used, they must be internally tinned and certified for gas service.
The gas supply lines must meet all requirements of the National Fuel Gas Code ANSI Z223.1-Latest
Edition, or in Canada Natural Gas Installation Code CAN/CGA B149.1-Latest Edition or Propane
Installation Code CAN/CGA B149.2-Latest Edition. The gas supply line may need to be larger for
EverHot water heaters than a storage water heater in the case of a replacement installation. Refer to
the piping capacity tables at the end of Section VI, “Gas Connections” and in the codes referenced above.
A 3 in. (7.6 cm) drip leg (sediment trap) is required ahead of the gas inlet connection to the water heater.
Install a manual gas shut-off valve before the gas inlet connection to the water heater before connecting
to the gas line. A union should be installed before the water heater gas connection for disconnection for
servicing.
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Check the type of gas and the gas inlet pressure before connecting the EverHot® water heater to the gas
supply. If the gas supply type does not match the type shown on the water heater rating plate, then DO
NOT connect the water heater. Contact your Bradford White supplier for the correct water heater.
GAS METER SIZE – NATURAL GAS ONLY
Be sure that the gas meter has sufficient capacity to supply the full rated gas input of the water heater, as
well as the requirements of all other gas fired equipment supplied by the meter. If the gas meter is too
small, ask the gas company to install a larger meter having adequate capacity.
GAS PRESSURE REGULATION
Minimum and maximum gas supply pressures are listed below: The minimum gas pressure specified
below is required for the full input rating specified on the water heater rating plate.
Natural Gas: Minimum: 5.0 in. w.c.
L.P. Gas:
Minimum: 8.0 in. w.c.
Maximum: 13.5 in. w.c.
Maximum: 10.5 in. w.c.
Before placing the WATER heater in operation, check for gas leakage. Use soap and water solution or
other material acceptable for the purpose of locating gas leaks.
WARNING
DO NOT use matches, candles, flame, or other sources of ignition for this purpose.
Table 12. Maximum Capacity of Schedule 40 Pipe in CFH for Gas Pressures of ½ psig or Less.
Length
0.5 in. W.C. Pressure Drop
(feet)
(meters)
3/4
1
1 1/4
10
20
30
40
50
60
70
80
90
100
3.0
6.1
9.1
12.2
15.2
18.3
21.3
24.4
27.4
30.5
360
250
200
170
151
138
125
118
110
103
680
465
375
320
285
260
240
220
205
195
1,400
950
770
660
580
530
490
460
430
400
Table 13. Specific Gravity Correction Factors.
Specific
Gravity
0.50
Correction
Factor
1.10
Specific
Gravity
1.30
Correction
Factor
1.07
0.55
1.04
1.40
1.04
0.60
1.00
1.50
1.00
0.65
0.96
1.60
0.97
0.70
0.93
1.70
0.94
0.75
0.90
0.80
0.87
Note: After determining the length of pipe required, select the pipe size that will supply the CFH (cubic
feet per hour) of gas required for the input rating of the gas appliances on the line. To determine
the CFH required for the gas appliances on the line, use the formula, shown below. The heating
value of the gas used may be obtained from a local gas utility.
Gas Input of Appliance(s) on the Line (Btu/hr)
CFH
Heating Value of Gas (Btu/Cu.ft)
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INITIAL OPERATION AND TESTING (INSTALLER ONLY)
1. Open the gas and water supply valves to the water heater.
2. Check for water and gas leaks. Use soap solution to check for gas leaks.
3. To check inlet supply pressure, remove the 1/8” NPT plug on the gas inlet supply fitting just below
the bottom casing and install a barb fitting for attaching a hose to a manometer. For checking the
gas manifold pressure, the plug is located just below the gas manifold connection inside the
control panel.
4. Turn power on (after completing electrical connections – refer to Section VII, “Electrical
Connections”) and fully open a hot water tap.
5. Measure the gas pressures to see that these are within the specified limits below:
Supply Pressure:
Manifold Pressure:
Nat. Gas: Min.: 5 in. w.c., Max.: 10.5 in. w.c.
L.P. Gas: Min.: 8 in. w.c., Max: 13.5 in. w.c.
Nat. Gas: 2.0-3.3 in. w.c. High Fire, 0.5 in. w.c. Low Fire
L.P. Gas: 3.2-5.0 in. w.c. High Fire, 0.9 in. w.c. Low Fire
(High fire manifold pressures vary depending on the water
heater’s model)
6. Turn off the hot water faucets. Disconnect the electrical power to the water heater. Remove the
pressure gauges and replace the plugs. Check for gas leaks around the plugs.
7. Replace the front control panel. Restore electrical power to the water heater
NOTICE
If the gas supply pressure is below the specified value, check the gas piping to ensure that it is the
correct size for all the gas appliances on line. Check the supply pressure with all the gas appliances
in operation. The manifold pressure will vary with the water flow rate. Several hot water faucets
may need to be opened with the temperature control set on the highest setting in order to get
maximum high fire manifold pressure. If the manifold pressure is below the specified value and
there is sufficient water pressure and flow, be sure the inlet gas pressure is within the specified limits
before attempting to adjust the manifold pressure.
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SECTION VII: ELECTRICAL CONNECTIONS
WARNING
Turn off or disconnect the electrical power supply to the water heater before servicing. Label all
wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
All electrical wiring must be installed and grounded in accordance with local codes, or in the
absence of local codes, the National Electrical Code, ANSI/NFPA 70 and/or CSA C22.2 Electrical
Code.
The water heater must be wired to a 120 VAC, 60 Hz, 15A power supply. The water heater should be
connected to a GFI outlet and wired on a separate circuit and breaker. A strain relief will be required for
the line cord. Do not plug the line cord into a receptacle that can have the power supply interrupted by a
switch that is used to control lights or another appliance.
If wiring in conduit is required, install an electrical conduit connector. A disconnect switch should be
provided near the water heater for servicing. Connect the wires exactly as shown in the wiring diagram of
this manual and on the inside cover panel. The black wire is the hot leg; the white wire is neutral. A
green screw is provided in the junction box for the green wire ground connection.
CAUTION
Do not energize the electric circuit before the water heater tank is filled with water.
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HOT
NEUTRAL
FROST SENSING
SWITCH
3A(FUSE)
ARRESTER
ANTI-FROST HEATER
VARISTOR
VARISTOR
GND
IGNITION
RELAY 1
IG
E
D
SWITCHING
POWER SUPPLY
DC12V
DC40V
DC170V
PG
DC12.6V
DC5V
A
B
C
SG
WATER FLOW
SENSOR
MODULATING
A
B
A
B
C
SOLENOID
VALVE
WATER FLOW
SENSOR
MODULATING
VALVE POWER
CONTROL
QS
CIRCUIT
POV
WATER FLOW
A
CIRCUIT
SG
CONTROL DEVICE
WATER FLOW
SG
CONTROL DEVICE
CIRCUIT
M
D
E
CPU
BY-PASS FLOW
A
SG
COMBUSTION
FAN
CONTROL DEVICE
CENTRAL
PROCESSING
UNIT
BY-PASS FLOW
CONTROL DEVICE
CIRCUIT
FAN
M
CONTROL
CIRCUIT
FAN
SG
BY-PASS SERVO MODEL ONLY
PG
A
RELAY
RELAY 1
A
DRIVING
CIRCUIT
SV0
SV1
SV2
SV3
THERMAL FUSE
FLAME ROD
FR
SOLENOID
DRIVING
CIRCUIT
FLAME
DETECTING
CIRCUIT
OVER HEAT
SWITCH
SG
GND
SG
B
OUTGOING WATER
A
B
THERMISTOR
HEAT EXCHANGER
THERMISTOR
REMOTE
REMOTE
CONTROLLER
CIRCUIT
THERMISTOR
CIRCUIT
CONTROLLER
AIR TEMPERATURE
THERMISTOR
SG
SG
SG
INDOOR MODEL ONLY
Figure 41. Ladder Diagram.
WARNING
DO NOT adjust any dipswitch settings on PC board except dip switch number 1, if required, for vent
length or unless instructed to do so.
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Figure 42. Wiring Diagram for TG-150I-N(X), TG-180I-N(X), and TG-199I-N(X) Models.
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Figure 43. Wiring Diagram for TG-237I-N(X) and TG-237I-N(X)A Models.
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TEMPERATURE CONTROLS
The front panel temperature control allows the end user to set the hot water supply temperature and will
display certain diagnostic codes of the water heater if there is a malfunction. All models have the option
of up to four controllers that can be used to conveniently control water temperatures for bath and shower
fixtures.
The main control is integrally mounted to project through the front panel of the water heater. The
adjustment range is 98-120F. Additional remote controls can be purchased, p/n 239-47806-00, and
these have the same available temperature range as the main control. If an optional commercial control,
p/n 239-47805-00, is purchased, the allowable temperature can be up to 185ºF on some models (TG-199I
and TG-237I only). The other models can get an allowable temperature up to 160ºF. If a commercial
control is used, this reduces the warranty period of the water heater. Also, if a commercial control is used
with a water heater, all of the remaining controls connected to the water heater can achieve the maximum
temperature that the commercial control allows. See Table for more details.
Table 14. Available Temperature Settings for TG Models.
TG-150I-N(X)
TG-180I-N(X)
150 160
** **
150 160 170 180
96
98 100 102 104 106 108 110 115 120 130* 140*
98 100 102 104 106 108 110 115 120 130* 140*
TG-199I-N(X) 96
**
**
**
**
Temp (ºC)
36
37
38
39
40
41
42
43
46
49
54
60
66
71
77
82
TG-237I-N(X)
TG-237I-
N(X)A
150 160 185
98 100 102 104 106 108 110 115 120 125* 130* 135* 140*
37 38 39 40 41 42 43 46 49 52 54 57 60
**
**
**
Temp (ºC)
66
71
85
* Re-setting the Maximum Temperature
For all models except TG-237I-N(X), TG-237I-N(X)A: These units have a default maximum temperature of 120º F (49º
C) and an option to increase the maximum temperature to 140 ºF (60 ºC). Temperature settings from 125-140 ºF
(52-60 ºC) are available by setting dip switch 6 to ON in the SW1 bank of 8 dip switches.
**239-47805-00, Commercial Control
These settings require the 239-47805-00 controller. When the 239-47805-00 controller is connected, these higher
temperatures are available on all controller models in the system. Use of a 239-47805-00 controller in a residential
dwelling will reduce the warranty coverage to that of a commercial warranty application.
DANGER
Hotter water increases the risk of scald injury. Scalding may occur within 5 seconds at a
temperature setting of 140F (60C). To protect against hot water injury, install a mixing valve in the
water system. This valve will reduce point of discharge temperature by mixing cold and hot water in
branch water lines. A licensed plumbing professional or local plumbing authority should be
consulted.
CAUTION
This water heater, when set at a lower temperature setting is not capable of producing hot water of
sufficient temperature for sanitizing purposes. Always check water temperature by hand before
entering the shower or bath. The temperature may have been changed. Test the temperature of
the water with your hand or elbow before placing a child in the bath or shower. Do not leave a child
or an infirm person in the bath unsupervised.
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WARNING
Do not adjust this water heater in any residential application above 120ºF. If this water heater is
used in a commercial application where temperatures in excess of 120ºF are required, use an ASSE
approved mixing device.
WARNING
This water heater is equipped with an energy cut out device to prevent overheating. Should
overheating occur or the gas supply fails to shut off, turn off the manual gas control valve to the
water heater, and call a qualified service agency.
NOTICE
The lower the temperature setting, the greater the energy efficiency to heat the water. Lower water
temperatures also extend the heat exchanger life. Remember, no water heating system will provide
exact temperatures at all times. Allow a few days of operation at this setting to determine the correct
temperature setting consistent with the requirements for the installation.
When multiple controls are used, depressing the Priority Button will override the main control and display
the setpoint of the remote control in use. Both the remote controls and the main control will display
diagnostic codes in the event the water heater needs service.
NOTICE
No more than four temperature controls may be connected to the EverHot® water heater.
NOTICE
The default temperature setting that will appear when the water heater is first connected to the electrical
supply is 104ºF. In the event of a power interruption, the unit will retain its set temperature for up to 6
hours. If the power is interrupted for more than 6 hours, the unit will revert back to a temperature of
104°F.
Before installing optional remote controls, determine the most convenient locations(s). When deciding on
the best location for the remote controls, please consider the following items:
1. Place the controls out of reach of small children.
2. Avoid locations where the control(s) will become hot, such as over a radiator, register, or other
heat sources.
3. Avoid direct sunlight. The digital readout can be difficult to read in direct sunlight.
4. Avoid areas where the remote can be splashed with cooking water, oil, or sauce.
5. The remote control operates with low voltage.
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R
C
O
R
P
O
R
A
T
I
O
N
Priority
Button
°F
o
Temperature
Display
Priority
P
Set Temperature
In Use
Priority
Indicator
In Use
Indicator
e n d l e s s h o t w a t e r s y s t e m
Thermostat
CAUTION: Hotter water increases the risk
of scald injury. Before changing temperature
setting, see instruction manual.
Figure 44. Remote Control and the Description of Functions on All Controls.
Residential Control, p/n 239-47806-00
Commercial Control, p/n 239-47805-00
Installation of Remote Control(s) (Optional)
1. The optional remote controls are intended to be installed in a bathroom close to a shower or tub.
The controls may be wired in parallel only.
2. Mark the holes on the wall using the control mounting plate and drill two mounting holes using a
3/32” (2.4 mm) drill bit and a clearance hole for the cable using a ¼” (6.4 mm) drill bit.
securing screw
1-21/32"
wiring hole
3-5/16"
securing screw
Figure 45. Outline of Remote Control's Mounting Plate.
3. Run the cable from the control to the water heater or another control, whichever is closer or more
convenient.
4. Remove the face plate from the remote control by inserting a screwdriver in the slot and twisting
open.
5. Connect the cable to the terminal screws of the remote control.
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6. Mount the control to the wall using the holes drilled and with the screws supplied. Note: Plastic
wall anchors may be required if the control is not located over a stud when mounting on
wallboard.
Note: If the cable cannot be run inside the wall cavity, then the plastic knockout should be removed from
the top or bottom of the control to allow flush mounting with the wall.
7. Disconnect the power from the water heater and remove the front cover.
8. Remove the plastic cover from the PCB and electrical connections.
9. Thread the cable through the access hole at the base of the water heater and connect the wires
to the control terminals on the right hand side of the PCB.
REMOTE CONTROL
CONNECTION TERMINALS
REMOTE
CONTROL CABLE
CABLE CLAMP
Figure 46. Illustration Showing Where to Connect Remote Control Harness.
10. Secure the control cable using the clamp provided in the control compartment.
11. Replace the plastic cover over the PCB terminals and then replace the front control panel of the
water heater.
WARNING
Do not attempt to connect the remote controls with the power on to the water heater. There is 120
volt terminals and wiring next to the remote control connections inside the unit. All servicing and
wiring must be performed by a qualified installer.
WARNING
When the water heater or remotely located remote control is used in public use applications, it shall
be installed in a location where it cannot be adjusted by the public (i.e. a maintenance room or
manager’s office). Unauthorized adjustments may result in scalding conditions.
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INITIAL OPERATION AND TESTING OF CONTROLS (INSTALLER ONLY)
1. Turn on power to the water heater and fully open a hot water tap.
2. Check the operation of the water heater. Check the operation of the remote temperature
control(s). Check the operation of the power failure protection system (drain solenoids).
3. Explain the proper operation of the new Bradford White EverHot water heater to the end user.
Troubleshooting – Electrical
There are a number of (live) tests that are required when fault finding this product. Extreme care should
be used at all times to avoid contact with energized components inside the water heater. Only trained
and qualified service technicians should attempt to repair this product. Before checking for resistance
readings, disconnect the power source to the unit and isolate the item from the circuit (unplug it).
Table 15. (SV1, SV2, SV3, and POV) Gas Valve and Modulating Solenoids (Set Meter Above 2k).
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
(Main) Pink-Black
(SV1) Black-Yellow
(SV2) Black-Blue
(SV3) Black-Brown
(POV) Pink-Pink
11-13 VDC
11-13 VDC
11-13 VDC
11-13 VDC
2-15 VDC
36.8-44.8 ohms
36.8-44.8 ohms
36.8-44.8 ohms
36.8-44.8 ohms
67-81 ohms
H5
H6
H7
H8
H3
6-7
5-6
4-6
3-6
9-10
Table 16. (M) Water Flow Control Device Servo or Geared Motor.
Connector
Pin
Nos.
Wire Color
Voltage
Resistance
No.
Red-Blue
Grey-Brown
Grey-Yellow
11-13 VDC
4-6 VDC
n/a
22-28 ohms
F7
9-10
5-7
n/a
n/a
F7
F7
5-8
Note: The grey wire listed above turns to black at F connector on the PCB.
Table 17. (QS) Water Flow Sensor.
Connector
Pin
Nos.
Wire Color
Voltage
Resistance
No.
Black-Red
11-13 VDC
4-7 VDC
5.5-6.2k ohms
F2
1-3
2-3
Yellow-Black
1-1.4 Mega ohms
F2
Table 18. By-pass Flow Control (By-pass Servo Model Only).
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
Brown-White
Orange-White
Yellow-White
G1
G1
G1
1-5
2-5
3-5
2-6 VDC (unit
in operating
mode)
15-35 ohms
Red-White -
Ground
G1
4-5
Table 19. (IG) Ignition System.
Connector
No.
Pin
Nos.
Wire Color
Voltage
90-110 VAC
Resistance
Grey-Grey
n/a
C1
1-2
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Table 20. (FM) Combustion Fan Motor.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
Red-Black
White-Black
Yellow-Black
6-45 VDC
5-10 VDC
11-13 VDC
n/a
E1
E1
E1
1-2
2-4
2-3
9.2-9.4k ohms
3.5-3.9k ohms
Set your meter to the hertz scale. Reading across the white and black wires at terminals 2 and 4 you should read
between 60 and 420 hertz.
Table 21. Thermal Fuse / Overheat Switch.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
F6
H1
F6-
H12
Red-Red
11-13 VDC
Below 1 ohms
Flame Rod:
Place one lead of your meter to the flame rod and the other to ground. With the unit running, you should
read between 5-150 VAC. Set your meter to micro-amp scale and series your meter in line with the flame
rod. You should read 1 micro-amp or greater for proper flame circuit. In the event of low flame circuit,
remove the flame rod and check for carbon or damage.
Heat Exchanger and Outgoing Water Temperature Thermistors:
Check all Thermistors by inserting meter leads into each end of the thermistor plug. Set your meter to the
20k scale and read resistance. Applying heat to the thermistor bulb should decrease the resistance.
Applying ice to the thermistor bulb should increase the resistance. See below for examples of typical
temperatures and resistance readings.
Example:
59ºF = 11.4-14kΩ
86ºF = 6.4-7.8kΩ
113º = 3.6-4.5kΩ
140ºF = 2.2-2.7kΩ
221ºF = 0.6-0.8kΩ
Table 22. Outgoing Water Thermistor.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
See example
above
White-White
n/a
F5
3-4
Table 23. Heat Exchanger Temperature Thermistor.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
See example
above
Pink-White
n/a
F4
3-11
Table 24. Intake Air Thermistor (Indoor Model Only).
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
See example
above
Orange-White
n/a
F3
3-12
Table 25. Surge Protector.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
Black-White
Blue-Brown
108-132 VAC
108-132 VAC
n/a
n/a
D2
D1
1-3
1-3
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With the power off, you can check the continuity through the surge protector. Place a meter lead on the
top pin #1 of the surge protector and pin #3 on the bottom of the surge protector. Check across the top
pin #3 and the bottom pin #1. If you read continuity across these two points, the surge protector is good.
If you do not get continuity, replace the surge protector.
Table 26. Remote Controls.
Connector
No.
Pin
Nos.
Wire Color
Voltage
Resistance
Terminals B1
10-13 VDC
1.5-3.0k ohms
B
1-3
Frost Protection:
This unit has frost protection heaters mounted at different points to protect the water the water heater
from freezing. The heaters located on the hot water outlet line should have a resistance reading of 180-
207 ohms through each of these heaters. The heater located on the heat exchanger piping should have
a resistance reading of 156-180 ohms, and the one located in the water flow sensor valve should have a
resistance reading of 24-28 ohms.
Amp Fuses:
This unit has two inline three-amp glass fuses. Remove the fuse and check continuity through it. If you
have continuity through the fuse, it is good. Otherwise, the fuse is blown and must be replaced.
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SECTION VIII: OPERATING INSTRUCTIONS
WARNING
Water heaters are heat-producing appliances. To avoid damage or injury there must be no
materials stored against the water heater or direct vent system, and proper care must be taken to
avoid unnecessary contact (especially by children) with the water heater and direct vent system.
UNDER NO CIRCUMSTANCES SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR
PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR IN ANY
LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER.
Installation or service of this water heater requires ability equivalent to that of a licensed tradesman
in the field involved. Plumbing, air supply, venting, gas supply, and electrical work are required.
Light the unit in accordance with the operation instructions label attached to the water heater.
Under no circumstances should the input rate exceed the input rate shown on the water heater
rating plate. Over firing could result in damage or sooting of the water heater.
If the unit is exposed to the following, do not operate water heater until all corrective steps have
been made by a factory authorized independent service contractor or qualified service professional.
1. Flooding to or above the level of the burner or controls
2. External firing
3. Damage
4. Firing without water
5. Sooting
Never operate the water heater without first being certain it is filled with water and a pressure relief
valve is installed in the HOT WATER OUTLET PIPING of the WATER heater.
GENERAL INSTRUCTIONS
TO FILL THE WATER HEATER
1. Close the water heater drain valve by turning the knob or valve stem clockwise.
2. Open the cold water supply shut-off valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater is filled. Close the
faucets and check for water leaks at the water heater drain valve, pressure relief valve, and the
hot and cold water connections.
SEQUENCE OF OPERATION
1. Water heater senses the minimum operating water flow which starts the ignition sequence to light
the burners.
2. Blower ON
3. Gas valve opens and spark igniter starts.
4. Main burner ON
5. Flame signal confirmed
6. Burner flame and combustion blower modulates to maintain selected outlet temperature
7. Water flow is also regulated to not exceed the capacity of the water heater for the temperature
selected.
8. Water flow shuts off.
9. Burners shut off immediately, but combustion blower continues for another 65 seconds to purge
heat from coil.
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LIGHTING INSTRUCTIONS
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
A. This water heater does not have a
pilot. It is equipped with a direct
ignition device, which automatically
lights the burner. Do not try to light
the burner by hand.
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.
B. BEFORE OPERATING: Smell all
around the appliance area for gas.
Be sure to smell next to the floor,
because some gas is heavier than
air and will settle on the floor.
C. Use only your hand to operate the remote control
keypad. Never use tools. If the remote keypad
doesn’t work, do not try to repair it, call a qualified
service technician. Forced or improper repair
may result in a fire or explosion.
WHAT TO DO IF YOU SMELL GAS
D. Do not use this water heater if any part has been
under water. Immediately call a qualified service
technician to inspect the water heater and to
replace any part of the control system and any
gas control which has been under water.
Do not try to light any appliance.
Do not touch any electric switch; do
not use any phone in your building.
OPERATION INSTRUCTIONS
1. STOP! Read the safety information
above before proceeding.
6. Wait (5) minutes to clear out any gas. If you
then smell gas, STOP! Follow “B” in the safety
information above on this label. If you don’t smell
gas, go to next step.
2. Set the thermostat to the lowest
setting.
7. Turn the manual valve located at the gas inlet of
appliance counterclockwise
Figure ).
to “ON” (See
3. Turn off all power to the electrical
appliance.
8. Turn on all electric power to the appliance.
4. This water heater does not have a
pilot. It is equipped with a direct
ignition device, which automatically
lights the burner. Do not try to light
the burner by hand.
9. Set the thermostat to desired setting.
10. If the appliance will not operate, Follow the
instructions “To Turn Off Gas To Appliance” and
call your service technician or gas supplier.
5. Turn the manual valve located at the
gas inlet of the appliance clockwise
to “OFF” (See Figure ).
TO TURN OFF GAS TO THE APPLIANCE
1. Set the thermostat to the lowest
setting.
3. Turn the manual valve at gas inlet of appliance
clockwise
to “OFF” (See Figure ).
2. Turn off all electric power to the
appliance if service is to be
performed.
Figure 47. Manual Gas Valve.
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CAUTION
In climates where below freezing temperatures may occur, the water heater must be drained when
power is off to the water heater to prevent freeze damage to the heat exchanger. Drain solenoids
are recommended to prevent freeze damage during power failures in cold climate regions.
TURNING OFF THE WATER HEATER FOR AN EXTENDED PERIOD OF TIME
If the EverHot water heater is to be turned off for an extended period of time, the following steps should
be taken.
1. Turn the gas shutoff valve on the gas supply inlet to the OFF position (See Figure ).
2. Disconnect the electrical supply to the water heater.
3. Shut off the cold water supply to the water heater and open the drain valve to drain the water
heater. If the water heater was installed with drain solenoid freeze protection, the water
heater will drain automatically when power is disconnected.
TEMPERATURE ADJUSTMENT
DANGER
Hotter water increases the risk of scald injury. Scalding may occur within 5 seconds at a
temperature setting of 140F (60C). To protect against hot water injury, install a mixing valve in the
water system. This valve will reduce point of discharge temperature by mixing cold and hot water in
branch water lines. A licensed plumbing professional or local plumbing authority should be
consulted.
CAUTION
This water heater, when set at a lower temperature setting is not capable of producing hot water of
sufficient temperature for sanitizing purposes. Always check water temperature by hand before
entering the shower or bath. The temperature may have been changed.
NOTICE
This water heater is equipped with an energy cut out device to prevent overheating. Should
overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the water
heater and call a qualified service agent.
NOTICE
The lower the temperature setting, the greater the energy efficiency to heat the water. Lower water
temperatures also extend the heat exchanger life. Remember, no water heating system will provide
exact temperatures at all times. Allow a few days of operation at this setting to determine the correct
temperature setting consistent with the requirements for the installation.
1. The outlet water temperature of the EverHot water heaters is adjusted using the main control
located on the front panel of the water heater (or optional remote controls). When a remote
temperature control is installed, the temperature can only be adjusted on the control that has
the Priority Indicator Light glowing. The temperature displayed on the control in use will also
be displayed on all the other remote controls.
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2. To set the desired temperature on the control, all hot water faucets must be closed. If there
are remote controls installed, press the “Priority” button on the control you want to change the
setting on and the “Priority” indicator light will glow.
3. Press the “H” or “C” button until the required temperature is displayed on the digital monitor.
The default available water temperature range for the main control is 98-120ºF.
4. To operate the water heater, simply turn any hot water tap on. This will automatically light the
burner and provide hot water at the preset temperature. If the optional remote controls have
been installed, the “IN USE” indicator light will glow on all remote controls.
5. The control(s) can also display diagnostic codes, water flow rate through the unit (in gallons
per minute), and the outlet water temperature.
6. Press and hold the “Priority” button for 2 seconds and without releasing, press the “H” button
to display a sequence of up to 9 diagnostic codes, if any, stored in memory that has been
experienced. Any diagnostic codes will be displayed on the digital monitor in sequence
starting with the most recent code.
7. Press and hold the “H” button for 2 seconds and without releasing, press the “Priority” button
to display the water flow through the water heater with hot water in use (GPM = Display
Readout X 0.1).
8. Press and hold the “C” button for 2 seconds and without releasing, press the “Priority” button
to display the outlet water temperature while in use (degrees F).
R
C
O
R
P
O
R
A
T
I
O
N
Priority
Button
°F
ri
or
P
i
t
y
Temperature
Display
Priority
P
n
o
t
B
ut
Set Temperature
In Use
Priority
Indicator
In Use
Indicator
e n d l e s s h o t w a t e r s y s t e m
Thermostat
CAUTION: Hotter water increases the risk
of scald injury. Before changing temperature
setting, see instruction manual.
Figure 48. Remote Control and the Description of Functions on All Controls.
NOTICE
The temperature can only be adjusted between 96F and 110F when the hot water tap is open and
hot water is flowing. This is a safety feature to prevent scalding while hot water is in use.
NOTICE
The default temperature setting that will appear when the water heater is first connected to the
electrical supply is 104ºF. In the event of a power interruption, the unit will retain its set temperature
for up to 6 hours. If the power is interrupted for more than 6 hours, the unit will revert back to a
temperature of 104°F.
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SCALDING
Figure 49. Scalding Warning.
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 water temperature. By setting the thermostat on this
water heater to obtain the increased temperature water required by these appliances, you may create the
potential for scald injury. To protect against injury, you should install a tempering 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 local plumbing supplier.
CAUTION
Test the temperature of the water with your elbow before placing a child in the bath or shower. Do not
leave a child or an infirm person in the bath unsupervised.
The following chart details the relationship of water temperature and time with regard to scald injury and
may be used as a guide in determining the safest water temperature for your applications.
Table 27. Relationship Between Exposure to Hot Water and When a Scald Results.
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
More than 5 minutes
120°F (49C)
125°F (52C)
130°F (54C)
135°F (57C)
140°F (60C)
145°F (63C)
150°F (66C)
155°F (68C)
1½ to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
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FIRST AID FOR SCALDS
1. Apply cold water to burned area for 30 minutes to reduce the heat in the skin and prevent deeper
burning. Never use butter, oils, or ointment to cover the burn. They may retain the heat.
2. Use a blanket to keep the scalded person warm.
3. Seek medical advice.
DIAGNOSTIC CODES ON THE TEMPERATURE CONTROL DISPLAY (BOTH MAIN AND REMOTE)
The Bradford White EverHot tankless water heaters have the ability to monitor and display any operating
faults on the control display. The diagnostic codes will display on the monitor and will assist in servicing
the water heater. The following is a listing of the diagnostic codes, which may flash on the monitor in
case of a malfunction with the water heater. Please quote the code displayed when calling for service.
Code
02
Code Description
Remedy
No burner operation
during freeze
Service Call
protection mode
03
10
Power interruption
during Bath Fill (Water
will not flow when
power returns).
Turn off all hot water taps. Press ON/OFF twice.
Air Supply or Exhaust
Blockage
Ensure Bradford White approved venting materials are being used.
Check that nothing is blocking the flue inlet or exhaust.
Check all vent components for proper connections.
Ensure vent length is within limits.
Ensure condensation collar was installed correctly.
Verify dip switches are set properly.
Check fan for blockage.
11
No Ignition
Check that the gas is turned on at the water heater, gas meter, or cylinder.
Ensure gas type and pressure is correct.
Ensure gas line, meter, and/or regulator is sized properly.
Bleed all air from gas lines.
Verify dip switches are set properly.
Ensure water heater is properly grounded.
Disconnect Manifold Electronic Controls to isolate the problem.
Ensure igniter is operational.
Check igniter wiring harness for damage.
Check gas solenoid valves for open or short circuits.
Remove burner cover and ensure all burners are properly seated.
Remove burner plate and inspect burner surface for condensation or debris.
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Code
12
Code Description
Remedy
Flame Failure
Check that the gas is turned on at the water heater and gas meter. Check for
obstructions in the flue outlet.
Ensure gas line, meter, and/or regulator is sized properly.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Ensure proper Bradford White venting material was installed.
Ensure condensation collar was installed properly.
Ensure vent length is within limits.
Verify dip switches are set properly.
Ensure water heater is properly grounded.
Disconnect keypad.
Disconnect Manifold Electronic Controls to isolate the problem.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Ensure flame rod wire is connected.
Check flame rod for carbon build-up.
Disconnect and reconnect all wiring harnesses on unit and PC board.
Check for DC shorts at components.
Check gas solenoid valves for open or short circuits.
Remove burner plate and inspect burner surface for condensation or debris.
14
Thermal Fuse
Check gas type of unit and ensure it matches gas type being used.
Check for restrictions in air flow around unit and vent terminal.
Check for low water flow in a circulating system causing short-cycling.
Ensure dip switches are set to the proper position.
Check for foreign materials in combustion chamber and/or exhaust piping.
Check heat exchanger for cracks and/or separations.
Check heat exchanger surface for hot spots which indicate blockage due to scale build-
up. Refer to instructions in manual for flushing heat exchanger.
Measure resistance of safety circuit.
Ensure high fire and low fire manifold pressure is correct.
Check for improper conversion of product.
16
32
33
34
Over Temperature
Warning
Check for restrictions in air flow around unit and vent terminal.
Check for low water flow in a circulating system causing short-cycling.
Check for foreign materials in combustion chamber and/or exhaust piping.
Check for clogged heat exchanger.
Outgoing Water
Temperature Sensor
Fault
Check sensor wiring for damage.
Measure resistance of sensor.
Clean sensor of scale build-up.
Replace sensor.
Heat Exchanger
Outgoing Temperature Measure resistance of sensor.
Sensor Fault
Check sensor wiring for damage.
Clean sensor of scale build-up.
Replace sensor.
Combustion Air
Temperature Sensor
Fault
Check for restrictions in air flow around unit and vent terminal.
Check sensor wiring for damage.
Measure resistance of sensor.
Clean sensor of scale build-up.
Ensure fan blade is tight on motor shaft and is in good condition.
Replace sensor.
52
61
Modulating Solenoid
Valve Signal Abnormal Measure resistance of valve coil.
Check modulating gas solenoid valve wiring harness for loose or damaged terminals.
Combustion Fan
Failure
Ensure fan will turn freely.
Check wiring harness to motor for damaged and/or loose connections.
Measure resistance of motor winding.
65
71
Water Flow Control
Fault
The water flow control valve has failed to close during the bath fill function. Immediately
turn off the water and discontinue the bath fill function. Contact a state qualified or
licensed contractor to service the water heater.
SV0, SV1, SV2, and
SV3 Solenoid Valve
Circuit Fault
Check wiring harness to all solenoids for damage and/or loose connections.
Measure resistance of each solenoid valve coil.
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Code
72
Code Description
Remedy
Flame Sensing Device Ensure flame rod is touching flame when unit fires.
Fault
Check all wiring to flame rod for damage.
Remove flame rod and check for carbon build-up; clean with sand paper.
Check inside burner chamber for any foreign material blocking flame at flame rod.
Measure micro amp output of sensor circuit with flame present.
Replace flame rod.
LC
Scale Build-up in Heat
Exchanger (when
Flush heat exchanger. Refer to instructions in manual.
Replace heat exchanger.
checking maintenance NOTE: The LC code is the only error code that will allow the unit to keep running. The
code history, “00” is
substituted for “LC”)
display will alternate between the LC code and the temperature setting. The controller
will continue to beep. The LC code will reset if power is turned off and then on.
No
code
Nothing happens
when water flow is
activated.
Clean inlet water supply filter.
On new installations ensure hot and cold water lines are not reversed.
Check for bleed over. Isolate unit from building by turning off hot water line to building.
Isolate the circulating system if present. Open your pressure relief valve; if water is
flowing, there is bleed over in your plumbing.
Ensure you have at least the minimum flow rate required to fire unit.
Ensure turbine spins freely.
Measure the resistance of the water flow control sensor.
Check for DC shorts at components.
If any of the above diagnostic codes are seen flashing on the display, call for service.
WARNING
Failure to remedy faults may result in severe burns, scalds, and/or death.
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SECTION IX: MAINTENANCE
WARNING
Always turn off the electrical power supply, the manual gas valve, and the manual water control
valve whenever servicing this appliance.
KEEP THE WATER HEATER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE, AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
The EverHot water heater should be checked annually by a qualified technician. Regular maintenance
will keep the water heater operating efficiently and help to assure reliable operation and a long service
life.
1. Remove and clean the inlet water filter screen. If a Y-type strainer or cartridge filter is used on
the cold water inlet to the water heater, inspect or clean as needed to assure full water flow to the
water heater.
2. Visually inspect the burner flames. The flame must burn with a clear blue, stable flame (possibly
with orange tips). Refer to Figure for satisfactory flame appearance. If the burner flame
appearance is not satisfactory or debris is visible on the burners, remove and clean with a
vacuum cleaner.
Figure 50. Burner Flame Appearance.
3. Inspect entire venting system and vent terminal. Make sure all the venting connections are tight
and the gaskets are in good condition. Check the vent terminal openings for blockage and clean,
if necessary. Keep shrubs and vegetation clear of the vent terminal.
4. All electric motors are permanently lubricated and do not need oiling. Remove the combustion air
blower and clean wheel and housing with soft brush or vacuum.
5. If the “LC” code has been flashing on the display, the heat exchanger will need flushing to remove
lime and scale deposits. Refer to the “Flushing Procedure for Lime Scale Removal…” in Section
IX, “Maintenance.”
6. Check operation of the pressure relief valve. To check the relief valve, lift the lever at the end of
the valve several times. The valve should seat properly and operate freely. If water does not
flow, remove and inspect for obstructions or corrosion. Replace with a new valve of the
recommended size as necessary. A thorough inspection of the valve should be performed at
least every three years by removing the pressure relief valve from the outlet piping. Do not
attempt to repair the valve, as this could result in improper operation and explosion of the heat
exchanger and piping. In areas with poor water conditions, it may be necessary to inspect the
pressure relief valve more often than the recommended maintenance schedule.
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CAUTION
Before manually operating the valve, make sure that a drain line has been attached to the valve to
direct the discharge to an open drain. Failure to take this precaution could mean contact with
extremely hot water passing out the valve during this checking operation.
FLUSHING PROCEDURE FOR MINERAL SCALE REMOVAL FROM HEAT EXCHANGER
The amount of calcium carbonate (minerals) released from water is in direct proportion to water
temperature and usage. The higher the water temperature or water usage and the harder the water
(more dissolved calcium carbonate), the more mineral deposits are dropped out of the water. This is the
mineral scale that forms in pipes, water heaters, and on cooking utensils.
Mineral accumulation reduces the efficiency and longevity of the heat exchanger coil and will cause the
water heater to malfunction. The mineral scale may need to be periodically removed from the heat
exchanger (indicated by the “LC” code on the remote display). The usage of water softening equipment
greatly reduces the hardness of the water. However, this equipment does not always remove all of the
hardness (minerals). The heat exchanger may occasionally need to be flushed to clear out the mineral
deposits. Use the following procedure and Figure to flush the heat exchanger and remove the mineral
scale.
1. Disconnect power to the water heater.
2. Close the shut-off valves in the cold water inlet and outlet supply (V3 and V4).
3. Connect pump outlet hose (H1) to the cold water line at valve (V2). Connect drain hose (H3) to
valve (V1).
4. Pour 4 gallons of virgin, food grade, white vinegar or citric acid into a 5 gallon bucket.
5. Place the drain hose (H3) and the hose (H2) to the pump inlet into the cleaning solution.
6. Open the both valves (V1 and V2) to the hot and cold water lines.
7. Turn on power to the circulating pump and allow the vinegar to circulate through the heat
exchanger coil for at least 45 minutes. Heat exchangers containing a considerable amount of
minerals may require several hours.
8. Turn off power to the circulating pump.
9. Remove the free end of the drain hose (H3) from the pail and route it to a drain.
10. Close the valve (V2) and open shut-off valve (V4). Do not open shut-off valve (V3).
11. Allow water to flow out of the hose for 5 minutes to flush vinegar from the water heater.
12. Close service valve (V1) and open shut-off valve (V3).
13. Disconnect the hoses from the valve connections.
14. With (V4) closed, remove the in-line filter at the cold water inlet and clean out any residue. Place
the filter back into unit and open (V4).
15. Restore power to the water heater and check operation.
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EverHot®
Water Heater
In-line
Filter
Gas Supply
V2
V1
H3
V4
V3
Cold Water Line
Hot Water Line
H2
H1
5 gallon pail of virgin, food
grade, white vinegar (or virgin,
food grade, citric acid).
Circulating Pump
Figure 51. Piping for Mineral Scale Flushing.
70
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Common Troubleshooting Comments on the Operation of the EverHot® Tankless Water Heater
Comment: I don’t have any hot water when I open the tap!
Make sure the gas and electricity is turned on to the water heater. The temperature display should have
the green light lit when a hot water tap is open and the water heater is operating. Make sure there are no
diagnostic codes flashing on the display.
Comment: When I was using the hot water, the water got cold!
If you reduced the hot water flow from the tap, you may have reduced the flow below the minimum flow to
operate the water heater. If you mix the hot water with cold water at the tap in an attempt to get a
temperature below the temperature being produced by the water heater, the hot water flow through the
water heater may drop below the minimum flow required to operate the water heater. To remedy this
situation, either increase the total water flow from the tap or using the control, decrease the setpoint
temperature of the water heater to the temperature desired at the tap.
Comment: White smoke comes out of the exhaust!
During colder weather when the exhaust temperature is much hotter than the ambient air, the moist
exhaust gases condense producing a white vapor cloud.
Comment: When I open a hot water faucet I do not immediately get hot water!
Hot water must travel through the plumbing piping to the faucet. This may take from 10 to 30 seconds
depending upon the length of cold plumbing pipe the water must travel through.
Comment: After I turn off the hot water tap, the fan on the water heater continues to run!
The fan is designed to continue to run for 65 seconds after the flow of water stops. This is to ensure
constant water temperature during frequent short water draws (such as washing dishes), as well as
exhausting residual heat and flue gases from the water heater and venting system.
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SECTION X: PARTS LIST
TG-150I, TG-180I, and TG-199I Models
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No
Description
Quantity
001 Main Body
002 Wall Fitting Bracket
003 Rubber Bushing
004 Connection Reinforcement Panel
005 Heat Protection Plate
006 Front Panel
007 Front Panel Packing
008 Main Body Packing Side
009 Remote Controller
010 Remote Controller Bracket
016 Rubber Bushing
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
017 Decoration Panel
800 Screw
801 Screw
802 Resin Washer
8
4
4
8
4
4
8
4
4
8
4
4
8
4
4
8
4
4
73
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No
Description
24 Burner Unit Assembly (LPG)
24 Burner Unit Assembly (NG)
Manifold Assembly (LPG)
Manifold Assembly (NG)
Pressure Point Sealing Screw
Combustion Chamber Front Panel
Electrode
FR Electrode
Electrode Packing
Electrode Holder
Back Pressure Joint
Pressure Tube C
Fan Motor All Assembly
Joint Fixing Pipe
Combustion Chamber Bracket
Air Inlet Box All Assembly
Joint Bracket
Connecting Joint
Joint Fixing Bracket
Air Inlet Duct
Joint Exhaust Tube Frame
Joint Exhaust Tube Frame Supporter
Air Inlet Box Cover
Heat Exchanger Assembly
Heat Exchanger Assembly
Flue Connection Assembly
O-ring
Quantity
103
103
110
110
113
114
116
117
118
119
121
122
125
131
132
135
136
137
138
139
140
141
142
143
143
144
145
146
147
148
-
1
-
1
-
1
-
-
1
-
1
-
1
-
-
1
-
1
-
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
O-ring
Pipe Seal
Cap
705
706
707
708
709
710
711
716
717
718
719
728
Electric Unit Fixing Plate
Sparker
High Tension Cord
Electrode Sleeve
Thermistor
1
1
1
1
1
1
5
2
1
1
1
1
1
1
1
1
1
1
5
2
1
1
1
1
1
1
1
1
1
1
5
2
1
1
1
1
1
1
1
1
1
1
5
2
1
1
1
1
1
1
1
1
1
1
5
2
1
1
1
1
1
1
1
1
1
1
5
2
1
1
1
1
Retainer (large)
Temperature Fuse Fixing Plate
Heater Fixing Plate
Heater Fixing Plate A
Heater Fixing Plate
Air Thermistor
Sparker Bracket
803
810
811
812
Screw
O-ring
O-ring
O-ring
3
2
1
1
3
2
1
1
3
2
1
1
3
2
1
1
3
2
1
1
3
2
1
1
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No
100
101
102
Description
Gas Control Assembly
Blind Screw
3/4 Gas Inlet
Quantity
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
400
401
401
402
403
404
404
405
408
409
410
411
412
413
3/4 Water Inlet B
Water Flow Servo & Sensor Assembly
Water Flow Servo & Sensor Assembly
Rectifier
By-pass Servo Assembly
Stop Bracket
Stop Bracket
Plug Band
3/4 Hot Water Outlet
Stop Bracket
Plug Band (small)
Drain Valve
1
1
1
1
1
1
1
1
1
1
-
1
1
-
1
1
-
1
1
-
1
1
2
-
1
1
1
1
1
1
1
1
1
2
-
1
1
1
1
1
1
1
-
-
-
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Filter Plug Assembly
Cover
700
700
701
702
703
727
730
Electric Unit Assembly
Electric Unit Assembly
Surge Protector
Electric Unit Cover
EC Cover
1
-
1
-
-
-
-
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MR Sensor
Thermistor
804
805
807
810
813
814
815
816
817
818
819
820
821
822
Thermistor Stop Screw
Screw
Resin Washer
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
Packing
Screw
1
3
2
2
2
2
2
1
1
2
2
4
2
3
1
3
2
2
2
2
2
1
1
2
2
4
2
3
1
2
2
2
1
2
1
1
1
2
2
4
2
3
1
2
2
2
1
2
1
1
1
2
2
4
2
3
1
2
2
2
1
2
1
1
1
2
2
4
2
3
1
2
2
2
1
2
1
1
1
2
2
4
2
3
Screw
Screw
Screw
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No
Description
Frost Sensing Switch
Anti Frost Heater (120V)
Valve Heater (120V) Assembly
Power Cord
Fuse Harness(FF)
Power Harness
Magnet Valve Harness
Sensor Harness
Sensor Harness
Quantity
712
713
715
720
721
722
723
724
724
725
726
729
1
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Thermal Fuse Harness
Sparker Harness
Remote Controller Harness
1
1
1
1
1
1
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TG-237I Models
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No
001
002
004
007
010
011
012
014
017
018
019
020
021
133
800
801
802
803
804
805
Description
Quantity
Main Body
1
1
1
2
2
2
1
1
1
1
1
1
2
2
4
4
2
7
1
1
1
2
2
2
1
1
1
1
1
1
2
2
4
4
2
7
1
1
1
2
2
2
1
1
1
1
1
1
2
2
4
4
2
7
1
1
1
2
2
2
1
1
1
1
1
1
2
2
4
4
2
7
Heat Protection Plate
Front Panel Assembly
Wall Fitting Bracket
Front Panel Packing-Top
Front Panel Packing-Side
Connection Reinforcement Panel
Seal Packing
Rubber Bushing
Reinforcement Plate
Air Intake Vent
Seal Plate
Duct Bracket
Packing
Screw
Washer
Screw
Washer
Screw
Screw
10 10 10 10
8
8
8
8
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No
101
103
103
104
105
113
115
116
117
118
121
122
125
125
131
132
133
150
151
153
154
155
156
704
705
706
707
709
710
711
714
715
717
806
807
808
812
814
816
Description
Quantity
Screw
2
-
1
-
2
1
-
1
-
1
1
1
1
1
1
1
1
-
2
-
1
-
1
1
1
1
1
1
1
1
-
2
1
-
1
-
1
1
1
1
1
1
1
-
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
9
1
1
5
2
3
2
2
Manifold Assembly (LPG)
Manifold Assembly (NG)
Burner Unit Assembly (LPG)
Burner Unit Assembly (NG)
Combustion Chamber Front Plate
Electrode
1
1
1
1
1
1
1
1
1
-
Flame Rod
Electrode Packing
Electrode Holder
Electrode Sleeve
Solenoid Valve Cover
Heat Exchanger Complete Assembly
Heat Exchanger Complete Assembly
Flue Outlet Vent Packing
Flue Outlet Vent Assembly
Packing
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
9
1
1
5
2
3
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
9
1
1
5
2
3
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
9
1
1
5
2
3
2
2
Blower Motor
Fan Casing Assembly
Fan Connecting Bracket
Fan Connecting Packing
Bell Mouth
Fan Motor Assembly
Igniter Bracket
Igniter
High Tension Code
Igniter Cover
Anti-Frost Heater Clip
Anti-Frost Heater Clip
Anti-Frost Heater Clip
Thermal Fuse Harness
Thermal Fuse Clip
Thermistor Clip
Screw
Screw
Screw
O-ring
O-ring
O-ring
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No
015
022
100
101
102
400
401
402
405
406
407
408
409
410
411
412
413
700
701
702
703
803
809
810
811
812
813
815
816
817
821
822
823
824
Description
Quantity
Rubber Bushing
Fan Rectifier
Gas Connection
Screw
1
1
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
7
3
1
1
3
1
1
2
1
1
4
2
3
1
1
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
7
3
1
1
3
1
1
2
1
1
4
2
3
1
1
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
7
3
1
1
3
1
1
2
1
1
4
2
3
1
1
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
7
3
1
1
3
1
1
2
1
1
4
2
3
Gas Control Assembly
Water Inlet
Plug Band
Water Filter Assembly
Water Flow Servo & Sensor Assembly
Rectifier
Bypass-Servo Assembly
Stop Bracket
Water Flow Servo Cover
Hot Water Outlet
Plug Band
Drain Valve
Stop Bracket
Printed Circuit Board
Surge Protector
Printed Circuit Board Cover-Front
Printed Circuit Board Cover-Side
Washer
Screw
Screw
O-ring
O-ring
O-ring
O-ring
O-ring
Packing
Screw
Screw
Screw
Screw
85
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No
708
712
714
716
718
720
721
722
723
724
Description
120V Anti-Frost Heater Assembly
120V Valve Heater Assembly
Thermal Fuse Harness
Thermistor
Frost Sensing Switch
Fuse Harness
Power Supply Harness
Igniter Harness
Quantity
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
Sensor Harness
Power Cord
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SECTION XI: WARRANTY
What does this Limited Warranty Cover?
This limited warranty covers both the heat exchanger and component parts for leakage or other
malfunction caused by defects in materials and/or workmanship. It applies to the original consumer
purchaser and to any subsequent owner as long as the water heater remains installed at its original place
of installation.
What does this limited warranty not cover?
This limited warranty does not cover leakage or other malfunction caused by:
a) Defective installation, reinstallation at another location and specifically, any installation which is
made in violation of applicable state or local plumbing, housing or building codes, or without a
certified American Gas Association, ASME, or comparable combination temperature and
pressure relief valve, or contrary to the written instructions furnished with the unit.
b) Adverse local conditions, and specifically sediment or lime precipitate in the heat exchanger;
corrosive elements in the atmosphere; or water quality contrary to the written requirements
furnished with the unit.
c) Misuse, and specifically operations and/or maintenance contrary to the written instructions
furnished with the unit, removal of anode(s), disconnection, alteration or addition on non-
approved components or apparatus, operation at settings other than those set forth on the rating
plate, or accidental or other exterior damage.
This warranty also does not cover:
a) Production of noise, taste, odors, discoloration or rusty water.
b) Incidental property damage, loss of use, inconvenience or other incidental or consequential costs.
c) Costs associated with the replacement and/or repair of the unit, including any freight, shipping or
delivery charges, any removal, installation or re-installation charges, any material, and/or permits
required for installation, re-installation or repair, or charges to return the defective heater and/or
component part to the manufacturer.
What is the duration of the implied warranty?
Any implied warranties, including the warranty of merchantability imposed on the sale of the water heater
under the laws of the state of sale are limited in duration to one year from date of original installation.
How does state law relate to the warranty?
Some states do not allow:
a) Limitations on how long an implied warranty lasts.
b) Limitations on incidental or consequential damages.
So the above limitations or exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to
state.
What is the period of coverage?
This limited warranty runs from the date of installation (or without proof of installation, from three (3)
months after the date of manufacture) for the period specified on the following chart.
Item
Residential
Applications
Commercial and Radiant Heating
Applications
Heat Exchanger
All other Parts and Components
12-years*
5-years*
5-years*
5-years*
A warranty product or part is provided exclusive of labor, freight, and/or any installation costs. All
replacement heaters and parts carry the balance of the original warranty, i.e. if an original twelve (12)
year warranted heater develops a leak due to defects in materials/workmanship after only ten (10) years,
the replacement unit is warranted for two (2) years in this example.
*Note: Period of coverage is reduced to 3-years from date of purchase when used as a circulating water
heater within a hot water circulation loop, where the water heater is in series with a circulation system and
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all circulating water flows through the water heater, and where an on-demand recirculation system is not
incorporated.
On-demand recirculation is defined as a hot water re-circulating loop or system that utilizes existing hot
and cold lines or a dedicated return line, and only activates when hot water is used. It can be activated
by a push button, motion sensor, or voice activation but not by a temperature sensor. A timer added to a
standard re-circulating pump is not considered as on-demand.
Use of a Main Controller/Commercial control (p/n 239-47805-00) in a residential dwelling will reduce the
warranty coverage to that of a commercial warranty application.
What will we do to correct problems?
If a defect occurs within the heat exchanger warranty period, we will:
a) Provide a replacement water heater of our manufacture, (or at our option) repair any unit which
develops a leak in the heat exchanger with the warranty period. To obtain a replacement water
heater, you must forward both the rating plate from the defective unit to us and a copy of the
original sales receipt. If government regulations require the replacement heater to have features
not found in the defective heater, you will be required to pay the difference in price represented
by those government required features.
If a defect occurs within the parts warranty period, we will:
a) Provide a replacement part (or at our option repair) any part which fails to function within the parts
warranty period. To obtain a replacement, you must forward the defective part to us. If
government regulations require the replacement part to have features not found in the defective
part, you will be required to pay the difference in price represented by those government required
features.
What will we not do?
We will not:
a) Repair or replace any water heater, or part, subject to conditions outlined in “What does this
limited warranty not cover?”
b) Reimburse any costs associated with repair and/or replacement.
c) Replace and/or repair any heater without complete model/serial number.
d) Replace any water heater without prior receipt of actual rating plate from appliance and copy of
original sales receipt.
How do you get warranty assistance?
Upon discovering s defect or problem, you should
a) Contact either the installer or dealer, or
b) Contact us
Bradford White Corporation
Warranty Support Group
200 Lafayette Street
Middleville, Mi 49333
1-800-531-2111
What should you do to keep the warranty in effect?
To facilitate warranty assistance, you should:
a) Follow all instructions enclosed with the product.
b) Retain all bills of sale or receipts for proof of installation, etc.
c) Contact your installer, dealer or our Warranty Department as soon as any problem or defect is
noticed.
When necessary, allow us, or our chosen representative, to inspect the unit.
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EverHot® Limited Warranty Registration
In order to confirm Limited Warranty coverage at 12 years for Residential Applications1,
complete the information below and click submit.
*Consumers First Name:
____________________
*Address:
*Consumers Last Name:
___________________
*City:
____________________
*State:
____________________
*Zip:
____________________
*Phone Number:
____________________
*Installation Date:
____________________
*Purchase Date:
____________________
*Installation Application Type:
(Ex: Residential or Commercial)
____________________
*Model Number:
____________________
*Serial Number:
____________________
____________________
*Installation Company:
(Ex: ABC Plumbing Company)
Installer’s EverHot® Certification Number:
(Ex: 109456)
____________________
Installer’s Phone Number:
____________________
*Denotes required fields
____________________
(1) Period of coverage is reduced to the Commercial Applications Limited Warranty (see
above box) if above information is not received by Bradford White Corporation.
Fax Number: Warranty Support Group: 269-795-1089
Mail: Warranty Support Group: 200 Lafayette Street, Middleville, MI 49333-9493
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NOTES:
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Ambler, PA
For U.S. and Canada field service,
Contact your professional installer or
local Bradford White representative.
Sales/800-523-2931
Fax/215-641-1670
Parts Fax/215-641-2180
Technical Support/800-334-3393
Fax/269-795-1089
Warranty/800-531-2111
Fax/269-795-1089
International:
Telephone/215-641-9400
Telefax/215-641-9750
Mississauga, ON
Sales/866-690-0961
905-238-0100
Fax/905-238-0105
Technical Support/800-334-3393
Email
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