ULTRA HIGH EFFICIENCY GAS WATER HEATER
(EFR160T120 Series Models)
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.
-
For your family’s comfort, safety and
convenience, it is recommended this
water heater be installed and
Ambler, PA 19002
serviced by a plumbing professional.
Tech. Service (800) 334-3393
Service Parts (800) 538-2020
Warranty Service (800) 531-2111
INSTALLATION/OPERATING MANUAL
WITH TROUBLESHOOTING GUIDE
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
238-48144-00E 7/12
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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.
DO NOT install any damaged venting system components. If damage is evident then please contact the supplier
where the water heater was purchased or the manufacturer listed on the rating plate for replacement parts.
Use only vent terminals provided or factory 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.
Failure to properly install the vent and air intake (if applicable) system could result in property damage, personal
injury, or death.
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 temperature and pressure relief valve is installed into the proper location at the
top 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 suitable for installation on combustible flooring. Do not install water heater directly on carpeting.
DO NOT operate this water heater without first being certain it is filled with water.
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 agency
to inspect the appliance 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.
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WARNING
This water heater needs fresh air for safe operation and must be installed so there are provisions for
adequate combustion and ventilation air. Insufficient air supply will cause a recirculation of combustion
products resulting in contamination that may be hazardous to life. This will result in carboning or sooting
of the combustion chamber, burners, and flue tubes and creates a risk of asphyxiation.
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.
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 should not be stored or
used in the same room with this water heater.
Insulation blankets are not required for 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.
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank
for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To
prevent the possibility of injury under these conditions, we recommend the hot water faucet to be open for
several minutes at the kitchen sink before you use any electrical appliance, which is connect to the hot
water system. If hydrogen is present, there will be unusual sounds such as air escaping through the
pipes as hot water begins to flow. Do not smoke or have open flame near the faucet at the time it is
open.
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!
To comply with NSF requirements this water heater must be sealed to the floor with sealant, in a smooth and easily
cleanable way.
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SECTION II: SPECIFICATIONS
Figure 1. Dimensional Layout
Recovery GPH
At Degree Rise
DIMENSIONS ( INCHES )
1st
Hr.
Del.
Gal.
At
D
E
F
Stg.
Cap.Therm.
U.S. Eff.
C
Flr to Flr to Fl. to
Flr to Inlet T&P Outlet
Vent Wtr. Valve Wtr. Fl. to Air Gas Conn. Conn. Conn. Valve Wt.
Dia. Outlet Conn Conn Conn Intake Conn. Dia. Dia. Dia. Open. (LBS)
H
Front Space
Input
G
Fl. to Wtr. Heating Gas Relief Shpg.
Rate 100°F
A
Ht.
B
Model No. BTU/h Rise 40°F 100°F 140°F Gal.
%
EFR-1-
60T120
120,000 180
345
138
99
60 95.0
57
28 ¼ 13 40 42 ½ 52 ½ 53 ½ 570
5
1
1
¾
¾
Recovery LPH
At Degree Rise
DIMENSIONS ( MILLIMETERS)
D
Flr to Flr to Fl. to
Flr to Inlet T&P Outlet
Vent Wtr. Valve Wtr. Fl. to Air Conn
E
F
H
Front
Fl. to Wtr. Space Gas Relief Shpg
Gas Conn Heating Conn Valve
Conn. Open Wt.
Dia. Dia. Dia. (KG)
1st Hr.
Input Del. LPH
Rate at 56°C
C
Stg. Therm.
Cap. Eff.
G
.
A
B
.
.
Model No.
KW
Rise
22°C 56°C 78°C Liter
%
Ht. Dia. Outlet Conn Conn Conn Intake
.
.
EFR-1-
60T120
144
8
35.2
681
1306 522 375 227 95.0
718 127 330 1016 1080 1334 1359 25
25 19 19 259
Table 1. Specifications
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SECTION III: GENERAL INFORMATION
FEATURES
This water heater contains the following features:
MAIN POWER ON/OFF SWITCH – The front panel of this water heater has a lighted ON/OFF switch, which is
illuminated when the main power is turned on to indicate power to the water heater.
COMBUSTION SYSTEM – This water heater is equipped with a self-compensating negative pressure pre-mix
combustion system. As the blower operates, air is drawn in through the air intake and into a venturi, which pulls gas
from the gas valve. The gas and air is then mixed in the combustion blower and sent through the transition tube into the
burner. The Direct Spark Ignition System (DSI) then ignites the gas/air fuel mixture to produce flue products
(combustion). The flame sensor signals the ignition control board (described below), that a flame is present.
HONEYWELL INTEGRATED CONTROL – Consists of a control board and a water heater display. An attractive digital
water heater display is on the top front of the water heater for precisely setting and displaying the temperature setpoint
and monitoring the status of the water heater. Pressing the temperature UP and DOWN buttons changes the
temperature setpoint. The temperature format may be displayed in degrees F or degrees C. The water heater display
will show diagnostic codes in the event the water heater needs servicing. The temperature readings of the tank sensor
can be monitored in Service Mode. Also in Service Mode, the display can show up to 10 previous error codes to further
aid in servicing the water heater.
The single control board has plug in wiring harnesses to reduce the chance of miswiring. The control board controls all
ignition, temperature, and combustion blower functions. The control board controls the combustion blower, ignition
timings, and gas valve to control the combustion system in order to maintain the desired tank temperature. The
sequence of operation is described in detail in the Diagnostic Section at the back of this Installation and Operating
Instruction Manual.
ADJUSTABLE THERMOSTAT – 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 may be adjusted from about 70°F (21°C) to about 180°F (82°C). The thermostat was adjusted to 70°F
(21°C) before the water heater was shipped from the factory. It is recommended that lower temperatures be used to
avoid the risk of scalding. Refer to the “Warnings” and the section on SCALDING in “Section V: Water Connections”. It
is further recommended, in all cases, that the water temperature be set for the lowest temperature, which satisfies your
hot water requirements for the installation. This will also provide the most energy efficient operation of the water heater
and minimizes scale formation.
Setting the water heater temperature at 120°F (49°C) will reduce the risk of scalds. Some states require setting lower
temperatures for specific installations.
The top immersion well of the single sensor control also contains a redundant sensor for the high limit (energy cutoff).
The high limit circuit interrupts the main burner gas flow should the water temperature exceed approximately 200°F
(93°C). Error code “65” will be shown on the water heater control display if the high limit temperature has been
exceeded.
Should the high limit switch activate, it must be manually reset. This should only be done by a service technician after
the cause of overheating has been corrected. Refer to the section on “Accessing Service Mode on the Display” in the
Diagnostic section of this Installation and Instruction Manual.
Contact your qualified installing contractor, service provider or manufacturer listed on the rating plate if continued high
limit operation occurs.
SERVICE PANEL – The service panel is located behind the service panel access cover, which is located by the
exhaust elbow near the bottom of the water heater. This panel contains a pressure switch that monitors the pressure in
the exhaust pipe in case the vent terminal becomes blocked. A collector high limit switch is used to monitor the ambient
temperature between the first pass collector and the exhaust collector. This is a manually re-settable switch. If this
switch continues to trip, please contact an authorized service agency.
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LATCHES – The latches allow easy access for servicing the water heater from the top. Simply remove the two latches
for servicing and re-latch upon completion. No tools are required to obtain access to the top of the water heater.
MIXING VALVE – This water heater is supplied with an ASSE approved mixing valve to reduce the potential for scald
injury when thermostat settings over 120˚F (49ºC) are used for dishwashers or other appliances. The mixing valve
reduces the discharge temperature by mixing cold and hot water in the branch supply lines. Refer to the instructions
supplied with the mixing valve for installation procedures and device specifications. The mixing valve is located inside
the control compartment.
SCALDING WARNING
ASSE APPROVED MIXING DEVICE MUST BE INSTALLED
TO PROVIDE PROTECTION FROM SCALDING
This water heater can deliver scalding temperature water at any faucet in the system if installed without installing
the supplied ASSE mixing device. By setting the thermostat on this water heater to obtain an increased water
temperature without properly installing the supplied mixing device, you may create the potential for scald injury.
To protect against injury, the supplied ASSE approved mixing device (a device to limit the temperature of water
to protect against scald injury via mixing hot and cold water supply) must be properly installed in the water
system. This valve will reduce point of discharge temperature in branch supply lines.
TEMPERATURE AND PRESSURE RELIEF VALVE –
WARNING
Keep clear of the combination temperature and pressure relief valve discharge line outlet. The
discharge may be hot enough to cause scald injury. The water is under pressure and may splash.
For protection against excessive temperatures and pressure, install temperature and pressure
protective equipment required by local codes, but not less than a combination temperature and
pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic
inspection of production of listed equipment or materials as meeting the requirements of the Standard
for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22 and
the Standard CAN1-4.4 Temperature, Pressure, Temperature and Pressure Relief Valves and Vacuum
Relief Valves. The combination temperature and pressure relief valve must be marked with a maximum
set pressure not to exceed the maximum working pressure of the water heater. The combination
temperature and pressure relief valve rating must not be less than the hourly rating of the water heater
Install the combination temperature and pressure relief valve into the opening provided and marked for
this purpose on the water heater.
Note: Some models may already be equipped or supplied with an installed combination temperature
and pressure relief valve. Verify that the combination temperature and pressure relief valve complies
with local codes. If the combination temperature and pressure relief valve does not comply with local
codes, replace it with one that does. Follow the installation instructions above on this page.
Install a discharge line so that water discharged from the combination temperature and pressure relief
valve will exit within 6 inches (15.3 cm) above, or any distance below the structural floor and cannot
contact any live electrical part. The discharge line is to be installed to allow for complete drainage of
both the 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 4 inches (10.2 cm) be provided on the side of the water
heater for servicing and maintenance of the combination temperature and pressure relief valve.
Do not place a valve between the combination temperature and pressure relief valve and the tank!
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CONDENSATE DRAIN – The water heater should either be raised several inches above the floor on a concrete slab or
use a low profile condensate pump to allow free drainage of condensate from the elbow drain fitting. This water heater
is a condensing type unit and requires a drain to be located in close proximity to allow the condensate to drain safely.
The condensate drains from the unit at the exhaust elbow located near the bottom of the unit. The preferred connection
to the drain fitting is to use a ¾ inch (1.9 cm) elbow sealed with silicone over the outside of the drain outlet and use ¾
inch (1.9 cm) for the drain trap and condensate line to a drain. Use a thick bead of silicone caulk over the outside of the
drain outlet connection before assembling the elbow. This is preferred over using the threaded tap because the larger
drain line will drain more freely and if too much force is applied to the plastic threads, the fitting may crack and cause a
leak. Make sure the condensate drain line slopes down, away from the water heater at least ⅛ inch (.3 cm) per foot (.3
m) toward the drain. The condensate drain pipe must not be routed through an area subject to below freezing
temperatures. The condensate build-up will block the exhaust outlet, which will cause improper operation. Refer to
Figure 2 for the proper connection of an elbow to the drain outlet and a condensate trap.
Figure 2. Condensate Elbow With Trap
CLEANOUT – All models are equipped with a cleanout opening to aid in removal of hard water deposits from the tank
bottom. If this water heater operates under hard water conditions, the following should be performed at least every 3
months: Turn off water supply and drain the water heater. Remove the cleanout jacket cover and tank cover. When
cleaning the tank, care must be taken to avoid trying to break deposits loose as this could damage the glass lining and
shorten the life of the water heater. After cleaning, re-install the cleanout tank cover and jacket cover, and refill with
water. Refer to the section, “Section X: Maintenance” in this Installation and Operating Instruction manual for the
procedures for filling and draining the water heater.
SACRIFICIAL ANODES – Four sacrificial anode rods have been installed in the tank head to extend tank life. The
anode rods should be inspected periodically for corrosion and replaced when necessary to prolong tank life. Water
conditions in your area will influence the time interval for inspection and replacement of the anode rods. The use of a
water softener may increase the speed of anode consumption. More frequent inspection of the anodes is needed when
using softened (or phosphate treated) water. Contact the installing contractor, or service provider that installed the
water heater or the manufacturer listed on the rating plate for anode replacement information.
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SECTION IV: INSTALLATION INSTRUCTIONS
WARNING
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO
THAT OF A LICENSED TRADESMAN IN THE FIELD. 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 tank, water line
connections, or the combination temperature and pressure relief valve will not result in
damage to the area adjacent to the water heater or to lower floors of the structure.
When such locations cannot be avoided, a suitable drain pan must be installed under
the water heater. The drain pan depth must be suitable for draining and collecting
water, and have a minimum length and width of at least 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.
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Sacrificial anode rods have been installed in the tank head of the water heater to extend tank life. The removal of these
anodes for any reason will nullify the warranty. In areas where water is unusually active, an odor may occur at the hot
water faucet due to a reaction between the sacrificial anode and the impurities in the water. If this should happen,
alternative anodes may be purchased from the supplier that installed this water heater. This will minimize the odor while
protecting the tank. Additionally, the water heater should be flushed with appropriate dissolvers to eliminate any
bacteria.
This water heater MUST be installed indoors out of the wind and weather.
This water heater MUST NOT be installed in any location where gasoline or flammable vapors are likely to be
present, unless the installation is such to eliminate the probable ignition of gasoline or flammable vapors.
Water heaters in residential garages must be installed so that all burner(s) and ignition device(s) are located
not less than 18 inches (45.7 cm) above the floor and be located, or protected, to avoid physical damage. For
other installations, refer to local codes. In the absence of local codes, the water heater must be installed in
compliance with the National Fuel Gas Code, (ANSI Z223.1-Latest Edition) or CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition).
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.
3. Remove all venting components and mixing valve from the combustion assembly compartment by removing
the latches.
NOTICE
The mixing valve, vent terminals and the condensate elbow that are supplied with this water
heater are stored at the top in the Combustion Assembly Compartment. To access these
parts, unlatch the top lid. Be sure to replace the top and relatch.
LOCATE WATER HEATER in front of final position before removing crate.
1. LOCATE so that venting connections will be short and direct.
2. THIS WATER HEATER IS SUITABLE FOR INSTALLATION ON A COMBUSTIBLE FLOOR. Do not install
this water heater directly on carpeting. If the water heater is to be installed on carpeting, it must be installed
on top of a metal or wood panel extending beyond the full width and depth of the appliance by at least three 3
inches (7.6 cm) in any direction or, if the appliance is to be installed in an alcove or closet, the entire floor
must be covered by the panel.
3. FOR BASEMENT INSTALLATION, provide a solid level elevated base such as concrete or other suitable pad
to raise the water heater at least 3 inches (7.6 cm) to provide a slope of ⅛ inch (.3 cm) to ¼ inch (.6 cm) per
foot (.3 m) for the condensate line to a suitable drain.
4. Minimum clearance to combustible material is 0 inches for the Top, Sides, and Rear of this water heater.
However, it is recommended that at least 18 inches (45.7 cm) from the Top, 24 inches (61 cm) from the
Front, 4 inches (10.2 cm) for the Left Side and Rear, and 12 inches (30.5 cm) from the Right Side
Exhaust Elbow of the water heater be provided for servicing. Clearance for servicing may be reduced
down to minimum clearance to combustible material, but service time and effort may be greatly increased.
5. Increase distances to provide clearance for servicing.
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Figure 3a. Minimum Clearance To Combustible Material
Figure 3b. Recommended Minimum Clearances For Service Access
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REMOVE CRATE
1. Remove all banding and pry off crate sides carefully so as not to damage the water heater.
2. Carefully roll/lift the water heater from the crate base.
CAUTION
Do not drop water heater. Do not bump water heater jacket against floor.
Do not bump exhaust vent pipe against crate or other objects. This will damage the water
heater and cause it to be inoperable or create nuisance problems.
MOVE WATER HEATER TO PERMANENT POSITION by sliding or walking. Place drain pan underneath water heater
INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE (if not already installed).
WARNING
Temperature and 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.
SCALDING WARNING
ASSE APPROVED MIXING DEVICE MUST BE INSTALLED
TO PROVIDE PROTECTION FROM SCALDING
This water heater can deliver scalding temperature water at any faucet in the system if installed without installing
the supplied ASSE mixing device. By setting the thermostat on this water heater to obtain an increased water
temperature without properly installing the supplied mixing device, you may create the potential for scald injury.
To protect against injury, the supplied ASSE approved mixing device (a device to limit the temperature of water
to protect against scald injury via mixing hot and cold water supply) must be properly installed in the water
system. This valve will reduce point of discharge temperature in branch supply lines.
CAUTION
If the 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.
LOCATION
KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
This water heater must be located in an area where the general public does not have access to set temperatures.
AIR REQUIREMENTS
1. Do not obstruct the flow of combustion and ventilating air.
2. For safe operation, adequate air is needed for combustion and ventilation. Sooting may result in serious
damage to the water heater and risk of fire or explosion. It can also create a risk of asphyxiation. Such a
condition often will result in a yellow, luminous burner flame, causing carboning or sooting of the combustion
chamber, burner and flue tubes.
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MECHANICAL EXHAUSTING OF ROOM AIR
1. Where an exhaust fan is installed in the same room with this water heater and combustion air is drawn from
inside the room, sufficient openings for air must be provided in the walls. UNDERSIZED OPENINGS WILL
CAUSE AIR TO BE DRAWN INTO THE ROOM THROUGH THE WATER HEATER’S VENTING SYSTEM,
CAUSING POOR COMBUSTION THAT MAY BE HAZARDOUS TO LIFE. SOOTING MAY RESULT IN
SERIOUS DAMAGE TO THE WATER HEATER AND RISK OF FIRE OR EXPLOSION, WHICH CAN ALSO
CREATE A RISK OF ASPHYXIATION. Refer to local codes and /or National Fuel Gas Code for proper air
opening sizing.
UNCONFINED SPACE
1. In buildings of conventional frame, brick or stone construction, unconfined spaces may provide adequate air
for combustion and ventilation.
2. If the unconfined space is within a building of tight construction (buildings using the following construction:
weather stripping, heavy insulation, caulking, vapor barrier, etc.), air for combustion and ventilation must be
obtained from outdoors. This may be accomplished by piping air directly to the water heater from outside or
providing opening or ducts in the wall. The installation instructions for confined spaces in tightly constructed
buildings must be followed to ensure adequate air supply.
CONFINED SPACE
1. When drawing combustion air from inside a conventionally constructed building to a confined space, such a
space must be provided with two permanent openings.
The top opening is to be located within 12 inches (30.5 cm) of the enclosure top and the bottom
opening within 12 inches (30.5 cm) of the enclosure bottom.
Each opening must have a free area of at least 1 inch² (6.5 cm²) per 1000 Btu/h (.3 kw) of the total input
of all appliances in the enclosure, but not less than 100 inches² (645.2 cm²).
2. If the confined space is within a building of tight construction, air for combustion and ventilation must be
obtained from outdoors. This may be accomplished by piping air directly to the water heater from outside or
providing opening or ducts in the wall. When directly communicating with the outdoors through vertical ducts,
two permanent openings, located in the above manner, must be provided.
Each opening must have a free area of not less than 1 inch² (6.5 cm²) per 4000 Btu/h (1.2 kw) of the
total input of all appliances in the enclosure.
If horizontal ducts are used, each opening must have a free area of not less than 1 inch² (6.5 cm²) per
2000 Btu/h (.6 kw) of the total input of all appliances in the enclosure.
3. If the water heater is installed as a direct vent (outside air piped directly to the water heater), then additional
opening, other than the opening for the air intake, are not required. However, adequate ventilation air must be
provided in all cases to prevent increased room temperature.
CHEMICAL VAPOR CORROSION
Corrosion of the flue ways and vent system will occur if air for combustion contains certain chemical vapors. Such
corrosion may result in poor combustion and create a risk of asphyxiation, as well as reducing the life of the water
heater. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes and process chemicals are corrosive. Products of this sort should
not be stored near the water heater or outside by the air intake (if applicable).
TYPICAL INSTALLATION ILLUSTRATION
CAUTION
If the 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.
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Figure 4. Typical Front Inlet Connection
Figure 5. Typical Front Inlet Connect with Storage Heater
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Figure 6. Typical Two Water Heater Connection
Figure 7. Typical Three Water Heater Connection
Figure 8. Typical Four Water Heater Connection
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SECTION V: WATER CONNECTIONS
WARNING
Failure to install and maintain a new, listed temperature and pressure relief valve will release the manufacturer from any
claim, which might result from excessive temperature and pressures.
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period
of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink before
you use any electrical appliance, which is connected to the hot water system. If hydrogen is present, there will be an
unusual sound such as air escaping through the pipes as hot water begins to flow. Do not smoke or have open flame near
the faucet at the time it is open.
Keep clear of the combination temperature and pressure relief valve discharge line outlet. The discharge may be hot
enough to cause scald injury. The water is under pressure and may splash.
Setting the water temperature to the maximum set point can result in scalding hot water delivered to the faucets. It is
highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of the
installation. See following section to change the maximum setpoint limit (max setpoint). Make sure the water heater
control display is not in a public area that can result in the temperature settings being improperly adjusted. See previous
warning on scalds and an ASSE approved mixing valve.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples in front or side of the water heater. Sweat the tubing to
the adapter before fitting the adapter to the water connections. It is imperative that heat is not applied to the nipples
containing a plastic liner.
This water heater must not be operated without installing the mixing valve included in the box shipped with the water
heater located in the control compartment. Refer to the instructions supplied with the mixing valve for proper installation
and settings.
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 water heater. Make the proper plumbing connections between the water heater and the plumbing
system to the house. Install a shut-off valve in the cold water supply line.
2. 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 expansion such as pressure bulges and/or
deformities. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
3. 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 temperature over 125°F
water flows through the faucets, close them and check all water connections
for possible leaks.
can cause severe burns
instantly or death from scalds.
Children, disabled and elderly
are at highest risk of being
scalded.
4. Never operate the water heater without first being certain it is filled with water.
SCALDING
Review this instruction manual
before setting temperature
at water heater.
Feel water before bathing or
showering.
This water heater can deliver scalding temperature water at any faucet in the system.
Be careful whenever using hot water to avoid scalding injury. Certain appliances such
as dishwashers and automatic clothes washers may require increased temperature
water.
Temperature limiting valves are
available.
Figure 9. Scald
Warning
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By setting the thermostat on this water heater to obtain the increased temperature water required by these appliances, you
might create the potential for scald injury. To protect against injury, you must install the ASSE approved mixing valve supplied
with the water heater in the water system. This valve will reduce point of discharge temperature by mixing cold and hot water
in branch supply lines. Follow the instructions supplied with the mixing valve for proper installation and adjustment. 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.
Approximate Time/Temperature Scald Chart
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49°C)
125°F (52°C)
130°F (54°C)
135°F (57°C)
140°F (60°C)
145°F (63°C)
150°F (66°C)
155°F (68°C)
More than 5 minutes
1½ to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
Table 2.
ALTERNATE SPACE HEATING WATER CONNECTIONS
DANGER
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.
All piping components connected to this water heater for space heating applications must be suitable for use with
potable water.
WARNING
When the system requires water for space heating at temperatures higher than required for other means, the supplied
ASSE approved mixing valve must be installed to temper the water for those uses in order to reduce the scald hazard
potential.
Failure to properly pipe this water heater may result in improper operation and damage to the water heater or
structure.
Oxygen contamination of this water heater will cause corrosion of iron and steel components, and can lead to water
heater failure.
Connect the system supply and return piping to the water heater.
Main Power
Ultra High Efficiency
Refer to Figure 10 and Figure 11 for installation examples.
Maintain a minimum ½ inch (1.3 cm) clearance from hot water
piping to combustible materials.
Figure 10. Alternate Space Heating Connections
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Figure 11. Typical Plumbing Schematic for Zoned Heating
SECTION VI: VENTING
WARNING
The vent 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 then please contact the supplier
where the water heater was purchased or the manufacturer listed on the rating plate for replacement parts.
Use only the vent terminals provided or factory authorized terminals 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 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.
DO NOT operate this water heater until the venting installation is complete and the piping completed. Failure to
complete installation before operation can result in property damage, personal injury, or death.
WARNING
Risk of carbon monoxide poisoning or fire due to joint separation or pipe breakage.
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. The acceptance of the venting system is dependent upon full compliance
with these installation instructions.
Venting system must not pass through rated fire separations.
The venting system must be free to expand and contract. This venting system must be supported in accordance
with these instructions.
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NOTICE
Single Wall Polypropylene venting systems that are listed on the Bradford White website are approved for use in the
water heaters covered in this instruction manual. The venting system components are ULC S636 approved and listed
by a recognized agency and may be installed in the U.S. and Canada. Complete instructions for the approved venting
systems can be found on the Bradford White website, bradfordwhite.com or by calling the Technical Service
Department at:800-334-3393.
WARNING
The approved polypropylene venting system Instruction Supplement listed on the Bradford White website for each
manufacturer’s venting system must be carefully read and followed by a qualified installer. Failure to properly install the
vent system may result in property damage, personal injury, or death.
NOTICE
For installations in Canada, field supplied vent piping must comply with CAN/CGA B149.1 (latest edition) and be
certified to the Standard For Type BH, Class II, 65°C, Gas Venting Systems, ULC S636. Components of this listed
system must not be interchanged with other vent systems or unlisted pipe/fittings. All components and specified
primers and cements of the certified vent system must be from a single system manufacturer and not intermixed with
other system manufacturer’s vent system parts. The supplied vent connector and vent termination are certified under
ULC S636 and are also certified as part of the water heater. Refer to the following tables for approved venting
materials, primers, and cements. All approved primers and cements are to be used within their marked time
limitations.
Approved Venting Materials
For installations in the US only
For installations in CANADA
ULC S636 approved CAN-COM
VENTING SYSTEM schedule 40 PVC
for flue gas venting rated Class II, 65°C
(components provided with water
heater)
PVC (ASTM D-2241 Schedule 40,
ASTM D-1785; or Cellular Core
Schedule 40 DWV, ASTM F-891)
CPVC (ASTM F-411 Schedule 40)
ABS (ASTM D-2235)
All fittings (other than the components
supplied with the water heater) should
be equivalent to: PVC-DWV (ASTM-F-
2665), CPVC (ASTM F-438), or ABS
(ASTM D-266/3311)
IPEX ULC S636 approved schedule 40
PVC (all other vent pipe/ fittings)
Approved Primers and Cements
For installations in the US only
For installations in CANADA
IPEX ULC S636 approved PVC Primer
and Cement for flue gas venting rated
Class II, 65°C
PVC and CPVC Primer (ASTM F-656)
PVC and CPVC Cement (ASTM D-
2564)
ABS Primer and Cement (ASTM D-
2235)
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CAUTION
Check to make sure flue gases do not recirculate into the air intake terminal when using direct venting. If
the water heater is having service issues, flue recirculation may be a contributing factor. Even when the
minimum vent terminal separation distances are followed, recirculation may still occur depending upon the
location outside the building, the distance from other buildings, proximity to corners, weather conditions,
wind patterns, and snow depth. Periodically check to make sure that flue recirculation is not occurring.
Signs of flue gas recirculation include frosted or frozen intake terminals, condensate in the intake terminal
and venting system, oxidation or white chalk material on the flame sensor or igniter shield. Correction to
flue recirculation may involve angling the intake away from the exhaust terminal, increasing the distance
between them, relocating the air intake to another side of the building, or using inside air for combustion.
Check to be sure the intake and exhaust terminals are not obstructed, especially during periods of below
freezing weather.
All intake and exhaust venting components must have the same diameter size. Do not use a different size
on the intake and exhaust venting. For 3 inch (7.6 cm) and 4 inch (10.2 cm) venting, use the supplied 2
inch (5.1 cm) vent terminals.
Be sure the condensate runs freely to a drain and does not accumulate inside the water heater. In cold
climates, precautions may need to be taken to insure that the condensate drain does not freeze. Make
sure the condensate trap or drain loop is installed to prevent flue gases from being discharged into the
room. Refer to the Venting section of the Installation and Operating Instructions Manual for complete
instructions on venting and condensate drainage.
High levels of dust and debris such as road and construction dust, insects, and tree pollen may clog the
burner resulting in poor performance and damage to the water heater. Avoid air intake locations where
debris can be created such as exhaust ventilation hoods, gravel parking lots, and near outdoor spotlights
that attract bugs. For these installations, an air intake filter kit, part number 239-47330-00A, is available as
an accessory service part from the installer of this water heater. The air intake filter kit is not designed to
filter out airborne contaminants or chemicals that may damage the water heater.
CAUTION
The vent must terminate a minimum of 12 inches (30.5 cm) above expected snowfall level to prevent
blockage of vent termination.
The horizontal centerline of the exhaust vent terminal (if applicable) must not be located lower than the
horizontal centerline of the air intake terminal if vented through the same wall.
A service drain loop must be installed in the drain tubing to serve as a condensate trap to prevent flue
gases from escaping into the room.
DO NOT position the air intake above the exhaust terminal.
NEVER locate the air intake where exhaust gases can be introduced.
NOTICE
Before beginning installation of any vent pipe, read the vent pipe manufacturer’s installation instructions.
Do not install the water heater in any location where the ambient temperature may fall below freezing.
Water heater must be protected from freezing downdrafts during shutdown periods.
Provide protection of the building materials from degradation 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.
This water heater can be installed as either a direct vent system or power vent (air from inside) system. If it is
installed as a direct vent system, then the air intake and the exhaust vent are piped to the outside. If a power
vented system is used, then air is drawn from inside and only the exhaust is piped to the outside. Determine
which system is best for your application and install as described in the following sections.
DIRECT VENT INSTALLATION
Venting may be run horizontally through an outside wall or vertically through a roof through using either 2 inch
(5.1 cm), 3 inch (7.6 cm), or 4 inch (10.2 cm) diameter pipe. This water heater is supplied with a screened intake
and exhaust elbow referred to as the air intake terminal and the exhaust vent terminal.
NOTICE
If 4 inch (10.2 cm) pipe is used, then a use a 4 inch (10.2 cm) to 2 inch (7.6 cm) reducer fitting before
exiting the wall or roof to use the supplied screened intake and exhaust terminals.
If 3 inch (5.1 cm) pipe is used, then use a 3 inch (5.1 cm) to 2 inch (7.6 cm) reducer fitting before
exiting the wall or roof to use the supplied screened intake and exhaust terminals.
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 in Figure 12.
NOTICE
The air intake and exhaust terminals may be located on separate outside walls or one terminal may
exit the roof while the other is through the wall. The total combined equivalent vent length must be
within the limits specified in the venting tables and the intake length cannot exceed the exhaust by
more than 30 feet (9 m). The minimum recommended vent separation distance between the intake and
exhaust terminals is 36 inches (91.4 cm). Local conditions may require a need for greater vent
separation distances.
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Figure 12a. Vent Terminal Clearances (Other than Direct Vent or “Power Vented” Installations)
Canadian
US
Canadian
US Installations2
Installations1
Installations2
Installations1
A= Clearance above
grade, veranda, porch,
deck or balcony
12 inches
(30.5 cm)
12 inches
(30.5 cm)
H= Clearance to each side
of center line extended
above meter/regulator
assembly
3 feet (.9 m) within a
height 15 feet (4.6 m)
above the
*b
meter/regulator
assembly
B= Clearance to widow or
door that may be
opened
36 inches
(91.4 cm)
4 feet (1.2 m)
below or to the
side of opening;
12 inches
I=
Clearance to service
regulator vent outlet or
oil tank vent
36 inches
(91.4 cm)
*b
(30.5 cm)
above opening
C= Clearance to
permanently closed
window
*b
*b
*b
J=
Clearance to non-
mechanical air supply
inlet to building or the
combustion air inlet to
any other appliance
Clearance to a
36 inches
(91.4 cm)
4 feet (1.2 m)
below or to side
of opening; 12
inches (30.5 cm)
above opening.
3 feet (.9 m)
above if within
10 feet (3 m)
horizontally
D= Vertical clearance to
ventilated soffit
*b
K=
6 feet
(1.8 m)
mechanical air supply
inlet
located above the
terminal within a
horizontal distance of
2 feet (.61 m) from the
center line of the
terminal
E= Clearance to
unventilated soffit
*b
*b
*b
*b
L=
Clearance above paved
sidewalk or paved
driveway located on
public property
7 feet
(2.1 m)†
7 feet
(2.1 m)†
F= Clearance to outside
corner
M= Clearance under a
veranda, porch, deck, or
balcony
12 inches (30.5 cm)‡
*b
G= Clearance to inside
corner
36 inches
(91.4 cm)*a
36 inches
(91.4 cm)*a
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 must 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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Figure 12b. Direct Vent Terminal Clearances
Canadian
US
Canadian
US Installations2
*b
Installations1
Installations2
Installations1
A= Clearance above grade,
veranda, porch, deck or
balcony
12 inches
(30.5 cm)
12 inches
(30.5 cm)
H= Clearance to each side
of center line extended
above meter/regulator
assembly
3 feet (.9 m) within a
height 15 feet (4.6 m)
above the
meter/regulator
assembly
B= Clearance to widow or
door that may be
opened
36 inches
(91.4 cm)
12 inches
(30.5 cm)
I=
Clearance to service
regulator vent outlet or
oil tank vent
36 inches
(91 cm)
*b
C= Clearance to
permanently closed
window
*b
*b
J=
Clearance to non-
mechanical air supply
inlet to building or the
combustion air inlet to
any other appliance
Clearance to a
36 inches
(91.4 cm)
12 inches
(30.5 cm)
D= Vertical clearance to
ventilated soffit located
above the terminal within
a horizontal distance of 2
feet (.61 m) from the
center line of the
terminal
E= Clearance to
unventilated soffit
12 inches
(30.5 cm)*a
12 inches
(30.5 cm)*a
K=
L=
6 feet
(1.8 m)
3 feet (.9 m)
above if within
10 feet (3 m)
horizontally
mechanical air supply
inlet
12 inches
(30.5 cm)*a
12 inches
(30.5 cm)*a
Clearance above paved
sidewalk or paved
driveway located on
public property
7 feet
(2.1 m)†
*b
F= Clearance to outside
corner
*b
*b
M= Clearance under a
veranda, porch, deck, or
balcony
12 inches (30.5 cm)‡
12 inches (30.5
cm)‡
G= Clearance to inside
corner
36 inches
(91.4 cm)*a
36 inches
(91.4 cm)*a
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 must 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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The vent system must terminate so that proper clearances are maintained as cited in local codes or the latest
edition of the National Fuel Gas Code, ANSI Z223.1.73.4e and 7.8a, b as follows:
1. Do not terminate near soffit vents or crawl space or other area where condensate or vapor could create a
nuisance or hazard or cause property damage.
2. Do not terminate the exhaust vent terminal where condensate or vapor could cause damage or could be
detrimental to the operation of regulators, relief valves, or other equipment.
3. Do not terminate the exhaust vent terminal over public area or walkways where condensate or vapor can
cause nuisance or hazard.
4. The vent must terminate a minimum of 12 inches (30.5 cm) above expected snowfall level to prevent
blockage of the vent termination.
5. The manufacturer requires the centerline distances between the air intake and exhaust vent terminals to
be a minimum of 36 inches (91.4 cm) apart and the exhaust terminal must extend 6 inches (15.3 cm)
past the air intake terminal.
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, and with National Fuel Gas Code and local codes.
All vent pipes and terminals are to have a 1” minimum clearance to combustibles. DO NOT use the placement of
insulation or other materials in the required clearance spaces surrounding the venting to combustible material
unless otherwise specified.
Horizontal Installation:
In a horizontal application, it is important that condensate not be allowed to buildup in the exhaust vent pipe. To
prevent this from happening, the pipe should be installed with a slight upward slope so the condensate will run
back toward the water heater. The vent system must be supported every 5 feet (1.5 m) of vertical run and every 3
feet (.9 m) of horizontal run of vent pipe length.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result in damage to
the water heater or venting system.
Stress levels in the pipe and fittings can be significantly increased by improper installation. If rigid pipe clamps are
used to hold the pipe in place, or if the pipe cannot move freely through a wall penetration, the pipe may be directly
stressed, or high thermal stresses may be formed when the pipe heats up and expands. Install accordingly to
minimize such stresses.
Follow the following procedure to vent through the wall:
1. Cut two 2 ½ inch (6.4 cm) diameter holes for 2 inch (5.1 cm) diameter pipe, in the wall with the centerline
hole distances at least 36 inches (91.4 cm) apart in the location where the exhaust vent and air intake
terminals will exit the outside wall if vented on the same wall. If venting with 3 inch (7.6 cm) pipe or 4 inch
(10.2 cm) diameter pipe, use a bell reducer to reduce to 2 inch (5.1 cm) pipe before exiting the wall to use
the supplied 2 inch (5.1 cm) diameter vent terminals.
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2. Use the proper cement to secure the exhaust vent and air intake terminals provided with the water heater
to the pipes. The distance between the back edge of the exhaust vent terminal and the exterior wall (see
Figure 13) must be 6 inches (15.3 cm) more for the exhaust vent terminal than the air intake terminal. Use
the proper cement or sealant and assembly procedures to secure the vent connector joints between the
terminal and the blower outlet. Provide support brackets for every 3 feet (.9 m) of horizontal vent beyond
the intake terminal.
Figure 13. Typical Horizontal Direct Vent System
Vertical Installation:
Vertical venting system must be supported every 5 feet (1.5 m) of vertical run and every 3 feet (.9 m) of horizontal
run of vent pipe length.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result in damage
to the water heater or venting system.
Stress levels in the pipe and fittings can be significantly increased by improper installation. If rigid pipe clamps are
used to hold the pipe in place, or if the pipe cannot move freely through a wall penetration, the pipe may be directly
stressed, or high thermal stresses may be formed when the pipe heats up and expands. Install accordingly to
minimize such stresses.
Follow the following procedure to vent through the roof:
1. Cut the necessary holes through the roof and ceiling.
2. Install the exhaust vent and air intake plastic pipes as shown in Figure 14. Make sure that the installation
meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN
B149 Installation Code (Latest Edition).
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Figure 14. Typical Vertical Direct Vent System Installation
(Note: Intake and exhaust terminals may be on different outside walls.)
Through The Wall Venting With Low Ground Clearance:
When venting cannot exit through the wall at a height greater than or equal to 12 inches (30.5 cm) (and above
expected snow level) from the ground, then the installation must be modified as shown below (see Figure 15).
Figure 15. Vent Terminal (Low Ground Clearance)
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Maximum Vent Length:
Direct Vent Maximum Vent Length (Combined Maximum Length for Intake and Exhaust)
Max Vent Length in
feet (meters) for 2
inch (5.1 cm)
Max Vent Length in Max Vent Length in
Model
Number
feet (meters) for 3
inch (7.6 cm)
feet (meters) for 4
inch (10.2 cm)
EFR60T120
60 (18)
120 (36)
170 (51)
Table 3
Note: The venting distance shown in the chart above is the combined maximum distance for the intake and
exhaust pipe and elbows. The intake and exhaust vent terminals may be in different locations (i.e., different
walls or one wall, one roof) provided the intake equivalent venting distance does not exceed the exhaust by
more than 30 feet (9 m).
Determining required vent length:
1. Determine the total length of straight vent pipe (in feet) required for both the intake and the exhaust.
2. Add 5 feet (1.5 m) of venting for every 90° elbow.
3. Add 2 ½ feet (.7 m) of venting for every 45° elbow.
4. Total vent length cannot exceed “Max Vent Length” in Table 3.
5. Air intake cannot exceed exhaust by more than 30 feet (9 m) in any venting situation.
Example of Total Direct Vent Length for EF100T199:
A 3 inch (7.6 cm) venting system has a total of six 90-degree elbows and a total straight pipe length of 65 feet (19.5
m) (includes both intake and exhaust pipe).
Equivalent vent length for elbows: 6 x 5 feet (1.5 m) = 30 feet (9 m).
Total equivalent vent distance = 65 feet (19.5 m) + 30 feet (9 m) = 95 feet (28.5 m) total equivalent vent
length. This is below the maximum allowed distance of 100 feet (30 m) for this model using 3 inch (7.6 cm)
vent.
NOTICE
Do not include the condensate elbow or vent terminals in determining maximum
vent length.
POWER VENT INSTALLATION
Power venting is where the indoor air is used and the exhaust is vented to the outside. Venting may be run horizontally
through an outside wall or vertically through a roof through using either 2 inch (5.1 cm), 3 inch (7.6 cm) or 4 inch (10.2
cm) diameter pipe. This water heater is supplied with a 2 inch (5.1 cm) diameter screened intake and exhaust elbow,
referred to as the air intake terminal and the exhaust vent terminal.
Power Vent Terminal Location:
Refer to the “Direct Vent Terminal Location” section previously mentioned to determine the proper exhaust vent
location. Plan the vent system layout so that proper clearances are maintained from plumbing and wiring.
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, and with National Fuel Gas Code and local codes.
All vent pipes and terminals are to have a 1” minimum clearance to combustibles. DO NOT use the placement of
insulation or other materials in the required clearance spaces surrounding the venting to combustible material unless
otherwise specified.
Horizontal Installation:
In a horizontal application, it is important that condensate not be allowed to buildup in the exhaust vent pipe. To
prevent this from happening, the pipe should be installed with a slight upward slope of ¼ inch (.6 cm) per foot (.3
m). The vent system must be supported every 5 feet (1.5 m) of vertical run and every 3 feet (.9 m) of horizontal
run of vent pipe length.
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CAUTION
Failure to properly support the vent piping with hangers and clamps may result in damage to the
water heater or venting system.
Stress levels in the pipe and fittings can be significantly increased by improper installation. If rigid pipe clamps are
used to hold the pipe in place, or if the pipe cannot move freely through a wall penetration, the pipe may be directly
stressed, or high thermal stresses may be formed when the pipe heats up and expands. Install accordingly to
minimize such stresses.
Follow the following procedure to vent through the wall:
1. Cut one 2 ½ inch (6.4 cm) diameter hole for 2 inch (5.1 cm) diameter pipe. If venting with 3 inch (7.6 cm)
pipe or 4 inch (10.2 cm) diameter pipe, use a bell reducer to reduce to 2 inch (5.1 cm) pipe before exiting
the wall to use the supplied 2 inch (5.1 cm) diameter vent terminal.
2. Use the proper cement or sealant to secure the exhaust vent terminal provided with the water heater to the
pipes. The distance between the back edge of the exhaust vent terminal and the exterior wall (see Figure
16) must be 6 inches (15.3 cm). Use the proper cement and assembly procedures to secure the vent
connector joints between the terminal and the blower outlet. Provide support brackets for every 3 feet (.9
m) of horizontal vent.
Figure 16. Typical Horizontal Power Vent System
Vertical Installation:
Vertical venting must be supported every 5 feet (1.5 m) of vertical run and every 3 feet (.9 m) of horizontal run of
vent pipe length.
Stress levels in the pipe and fittings can be significantly increased by improper installation. If rigid pipe clamps are
used to hold the pipe in place, or if the pipe cannot move freely through a wall penetration, the pipe may be directly
stressed, or high thermal stresses may be formed when the pipe heats up and expands. Install accordingly to
minimize such stresses.
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CAUTION
Failure to properly support the vent piping with hangers and clamps may result in damage to
the water heater or venting system.
Follow the following procedure to vent through the roof:
1. Cut the necessary holes through the roof and ceiling.
2. Install the exhaust vent and air intake plastic pipes as shown in Figure 17. Make sure that the installation
meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN
B149 Installation Code.
Figure 17. Typical Vertical Power Vent System Installation
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Through The Wall Venting With Low Ground Clearance:
When venting cannot exit through the wall at a height greater than or equal to 12 inches (30.5 cm) (and above
expected snow level) from the ground, then the installation must be modified as shown below (see Figure 18).
Refer to Tables 3 or 4 for maximum venting lengths using 2 inch (5.1 cm), 3 inch (7.6 cm) or 4 inch (10.2 cm)
diameter plastic pipe.
Figure 18. Vent Terminal (Low Ground Clearance)
Maximum Vent Length Determination
Power Vent Maximum Vent Length
Max Vent Length in
feet (meters) for 2 inch feet (meters) for 3 inch feet (meters) for 4
Max Vent Length in Max Vent Length in
Model
Number
(5.1 cm)
(7.6 cm)
inch (10.2 cm)
170 (51)
EFR60T120,
EF100T150
60 (18)
120 (36)
Table 4
Determining required vent length:
1. Determine the total length of straight vent pipe (in feet) required.
2. Add 5 feet (1.5 m) of venting for every 90° elbow.
3. Add 2 ½ feet (.7 m) of venting for every 45° elbow.
4. Total vent length cannot exceed “Max. Vent Length” in Table 4.
Example of Total Vent Length for EF100T199 with a power vented installation:
A 3 inch (7.6 cm) venting system has a total of six 90-degree elbows and a total straight pipe length of 55 feet (16.5
m).
Equivalent vent length for elbows: 6 x 5 feet (1.5 m) = 30 feet (9 m).
Total equivalent vent distance = 55 feet (16.5 m) + 30 feet (9 m) = 85 feet (25.5 m) total equivalent vent
length. This is below the maximum allowed distance of 100 feet (30 m) for this model using 3 inch (7.6 cm)
vent.
NOTICE
Do not include the 3 inch (7.6 cm) condensate elbow or vent terminals in
determining maximum vent length.
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MULTIPLE INTAKE/EXHAUST TERMINAL SEPARATION DISTANCES
Note: When installing multiple intake/exhaust terminals on the same wall of a building, the nearest
intake terminal must be at least 5 feet (1.5 m) from the nearest exhaust terminal.
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CONCENTRIC VENT TERMINAL INSTALLATION PROCEDURE
WARNING
Improper installation, adjustment, service, or maintenance can cause property damage, personal injury,
or death. Consult a qualified installer, service agency, or the gas supplier for information or assistance.
This kit must be used only for terminating this water heater. Do not use this termination kit for any other
appliance. Using this kit on other appliances and/or water heaters can result in property damage,
personal injury, or death.
DO NOT operate this water heater until the installation and assembly of this kit is complete and the piping
completed. Failure to complete installation before operation can result in property damage, personal
injury, or death.
Before beginning any installation, be sure the main electrical disconnect switch is in the OFF position.
Electrical shock can cause personal injury or death.
DO NOT operate this water heater with the rain cap removed or recirculation of combustion products may
occur. Water may also collect inside larger combustion-air pipe and flow to the burner assembly. Failure
to follow this warning could result in product damage, or improper operation, personal injury or death.
CAUTION
DO NOT use field-supplied couplings to extend pipes. Airflow restriction will occur and the water heater
pressure switches may cause intermittent problems.
Vertical Installation:
1. Become familiar with concentric vent kit part no. 239-44069-02. Refer to the previous section on determining
the maximum venting distance and pipe diameter required for the installation. For venting with 3 inch (7.6 cm)
and 4 inch (10.2 cm) diameter pipe, use a bell reducer to reduce to the 2 inch (5.1 cm) diameter vent size to
connect to the 2 inch (5.1 cm) vent terminal connections.
Figure 19. Dimensional Layout of Concentric Vent Kit
Figure 20. Concentric Vent Kit Part Identification
2. Determine the best location for the termination kit.
3. Cut the recommended 4 inch (10.2 cm) diameter hole.
4. Partially assemble vent kit by performing the following:
a. Cement concentric Y fitting to larger diameter pipe. (See Figure 20).
b. Cement rain cap to smaller diameter pipe. (See Figure 21).
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Figure 21. Rain Cap to Small Vent Pipe Assembly
5. Install concentric Y fitting and pipe assembly through the structure’s hole and field-supplied roof boot/flashing.
Do not allow insulation or other materials to accumulate inside pipe assembly when installing through the hole.
6. Secure assembly to roof structure as shown in Figure 22 using field-supplied metal strapping or equivalent
support material.
NOTICE
Ensure termination height is above the roof surface or anticipated snow level. See Figure 22.
If assembly is too short to meet height requirements, the two pipes supplied in the kit may be
replaced by using the same diameter pipe. DO NOT extend the overall dimension by more
than 60 inches (152.4 cm). See Figure 19.
Figure 22. Concentric Vent Roof Top Attachment
7. Install rain cap and small diameter pipe assembly in roof penetration assembly. Ensure small diameter pipe is
cemented and bottomed in Y concentric fitting.
8. Cement heater combustion-air and vent pipes to concentric Y fitting assembly (Figure 20). See Figure 22 for
proper pipe attachment.
9. Operate heater through one cycle to ensure combustion-air and vent pipes are properly connected and sealed
to concentric vent termination connections.
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Horizontal Installation:
1. Become familiar with coaxial vent kit part no. 239-44069-02 as shown in Figures 19 through 21.
2. Determine the best location for the termination kit.
NOTICE
Position termination where vent vapors will not be adversely affected by wind condition.
Position termination where it will not be damaged or be subjected to foreign objects.
Position termination where vapors will not be objectionable.
3. Cut the recommended 4 inch (10.2 cm) diameter hole.
4. Partially assemble vent kit.
a. Cement Y concentric fitting to larger diameter kit pipe. (See Figure 20).
b. Cement rain cap to smaller diameter kit pipe. (See Figure 21).
5. Install concentric Y fitting and pipe assembly through the structure’s hole and field-supplied roof boot/flashing.
Do not allow insulation or other materials to accumulate inside pipe assembly when installing through the hole.
6. Install rain cap and small diameter pipe assembly in concentric Y fitting and large pipe assembly. Ensure small
diameter pipe is cemented and bottomed in concentric Y fitting.
7. Secure assembly to structure as shown in Figure 23A. Ensure clearances as shown in Figure 23A.
Figure 23A. Concentric Vent Side Wall Attachment
8. Cement heater combustion-air and vent pipes to concentric Y fitting termination assembly. See Figure 23A &
23B for proper pipe attachment.
9. Operate heater through one cycle to ensure combustion-air and vent pipes are properly connected and sealed
to concentric vent termination connections.
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It is acceptable to install a 90 degree elbow on IPEX concentric vent terminations use with this power direct vent water
heater (see Figure 23b). A short length of appropriate diameter vent pipe should be used to transition from the vent
terminal to the 90 degree elbow. Approved venting materials along with primers and cements are listed at the beginning
of this venting section. When the 90 degree elbow is used the equivalent length of the elbow and short length of vent
pipe must be factored into the total vent/air intake pipe determinations (see Tables 3 and 4 for appropriate vent
connector lengths).
WARNING! DO NOT
USE 2” VENT WITH
EF100T250/300
MODELS
Figure 23B
(A) VENT DIAMETER
(B) DIMENSION
MIN
MAX
2” (5.1 CM)
3” (7.6 CM)
12” (30.5 CM)
12” (30.5 CM)
40” (101.6 CM)
44” (111.8 CM)
VENT PIPE PREPARATION
WARNING
DO NOT attempt to start this water heater until vent pipe solvent fumes completely
clear from the room and inside the vent piping.
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INITIAL PREPARATION
1. Make sure the solvent cement you are planning to use is designed for the specific application you are
attempting.
2. Know the physical and chemical characteristics and limitations of the PVC, PVC cellular core, ABS or CPVC
piping materials that you are about to use.
3. Know the reputation of your pipe and cement manufacturer and their products.
4. Know your own qualifications or those of your contractor. The solvent welding technique of joining PVC, PVC
cellular core, ABS or CPVC pipe is a specialized skill just as any other pipe fitting technique.
5. Closely supervise the installation and inspect the finished job before start-up.
6. Contact the manufacturer, supplier, or competent consulting agency if you have any questions about the
application or installation of PVC, PVC cellular core, ABS or CPVC pipe.
7. Take the time and effort to do a professional job. Shortcuts will only cause you problems and delays in start-
up. The majority of failures in these systems are the result of shortcuts and/or improper joining techniques.
SAFETY PRECAUTION: PRIMERS AND CEMENTS ARE EXTREMELY FLAMMABLE AND MUST NOT BE STORED
OR USED NEAR HEAT OR OPEN FLAME. ALSO, USE ONLY IN A WELL VENTILATED AREA.
SECTION VII: 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 inch (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 foot 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 14 inches (3483.8 Pa) water column (½ psi (3.5 kPa))
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 a 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.
CAUTION
The water heater and individual shutoff 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.
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Figure 24. Drip Leg
The gas supply lines must meet all requirements of the National Fuel Gas Code ANSI Z223.1 (Latest Edition), or in
Canada CAN/CGA B149.1 Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation
Code (Latest Edition).
GAS METER SIZE – NATURAL GASES 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
Main line gas pressure to the water heater should be between a maximum 14 inches (3483.8 Pa) W.C. and a minimum
supply pressure as shown on the rating plate. The inlet gas pressure must not exceed the maximum value. In some
installations, a regulator sized for the input rating of the water heater will need to be installed just ahead of the inlet gas
connection to the water heater to reduce excess gas pressure or surges in gas pressure.
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.
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SECTION VIII: 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 must be wired on a
separate circuit and breaker. If a flexible line cord and plug is permitted by local code, then provide a three wire
grounding type receptacle within reach of the line cord provided on the control box. 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, cut the line cord close to the control board and make the appropriate wiring connections.
Install an electrical conduit connector on the outside jacket of the water heater. Refer to the wiring diagram for the
correct connections to each wire lead.
CAUTION
This water heater must be wired on a separate circuit. Failure to wire on a separate circuit may cause
improper operation or failure of the electrical components of the water heater. Refer to the “Electrical
Connections” section of the Installation and Operating Instructions Manual for complete instructions on
electrical wiring and connections to the water heater.
Do not energize the electric circuit before the water heater tank is filled with water.
WIRING DIAGRAM
CONNECTION DIAGRAM
BLACK GROUND
120 VOLTS
WHITE
120 VOLTS
BR
MV
BLOWER MOTOR
CONTROL
LOWER
SENSOR
& ECO
M
7
4
1
8
5
2
9
6
3
24V
PV/MV
BLOWER RELAY
BL
120 VAC
24 V.
R
W
Y
W
GAS VALVE
R
GY
R
1
2
3
P.S. (N.C.)
24V
R
P.S. TSTAT ECO
NC
R
R
COLLECTOR
LIMIT
GY
GY
GY
GY
COLL HIGH-LIMIT
LIMIT (N.C.)
SENSOR 1
DISPLAY
6 PIN CONNECTOR
TO PRESSURE
SWITCH HARNESS
GAS VALVE
W
R
1
PV
R
E-COM
2
5
1
2
3
2
W
120V
GN
O
R
MV
4
5
6
1
2
3
BK
3
SENSE
24V
BK
M
M
E-COM
1
2
3
W
BLOWER RELAY COIL
(BOARD CIRCUIT)
CONTROL
DISPLAY
COMBUSTION
BLOWER
HIGH VOLTAGE
SPARK
INDUCER
SENSE
CONTROL BOARD
LINE IN
W
1
2
(399,999 BTU/HR MODELS ONLY)
O
1
BK
ANODE RODS
HIGH VOLTAGE
SPARK
SECONDARY
2
3
4
BL
Y
TOGGLE
SWITCH
LIGHT
NOTE:
1
2
3
24V
GN
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE
MUST BE REPLACED. IT MUST BE REPLACED WITH 18. GA STRANDED
BK
LOAD
GN
G
105°C WIRE OR ITS EQUIVALENT.
W
L1
SI UN DES CONDUCTEURS D'ORIGINE FOURNI AVEC L'APPAREIL DOIT
LINE
120V
ETRE REMPLACE UTILISER UN CONDUCTEUR 18 GA STRANDED 105°C
OU L'EQUIVALENT.
N
GND
120 VOLTS AC
TRANSFORMER
PRIMARY
Figure 25. Wiring Diagram and Schematic
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SECTION IX: 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.
Plumbing, air supply, venting, gas supply and electrical work are required.
Light the unit in accordance with the operating 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 TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING 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. If alternative water connections
are provided but not used, make certain they are plugged (i.e. right side connections).
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, combination temperature and pressure relief valve and the hot
and cold water connections.
SEQUENCE OF OPERATION
1. Thermostat starts with heating cycle
2. Blower ON
3. Blower pre-purge
4. Spark rod sparks to the burner and gas valve opens – Burner ignition
5. Main burner ON
6. Flame signal confirmed
7. Thermostat satisfied
8. Gas valve closes – Main burner OFF
9. Blower post-purge
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LIGHTING AND SHUT-DOWN INSTRUCTIONS
FOR YOUR SAFETY READ BEFORE LIGHTING
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 appliance does not have a pilot.
It is equipped with an ignition device
which automatically lights the burner.
Do not try to light the burner by hand.
B. BEFORE OPERATING smell all around
the appliance for gas. Be sure to
smell next to the floor because some
gas is heavier than air and will settle
on the floor.
WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electric 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.
C. Turn off main power to the water
heater.
D. Do not use this appliance if any part
has been under water. Immediately
call a qualified service technician to
inspect the appliance and to replace
any part of the control system and
any gas control which has been
under water.
LIGHTING INSTRUCTIONS
1. STOP! read the safety information
above on this label.
2. Set the thermostat to lowest setting.
3. Turn off all electrical power to the
appliance.
4. This appliance does not have a pilot.
It is equipped with an ignition device
which automatically lights the burner.
Do not try to light the burner by hand.
5. Turn off the main power switch.
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.
7. Turn on main power.
8. Set the thermostat to desired setting.
"GREEN LIGHTED" MAIN POWER SWITCH
TEMPERATURE UP
TEMPERATURE DOWN
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off the main power switch.
Figure 26. Lighting Instruction Label
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TEMPERATURE ADJUSTMENT
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49°C) More than 5 minutes
125°F (52°C)
130°F (54°C)
135°F (57°C)
1½ to 2 minutes
About 30 seconds
About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C)
155°F (68°C)
About 1½ seconds
About 1 second
SCALDING WARNING
ASSE APPROVED MIXING DEVICE MUST BE INSTALLED
TO PROVIDE PROTECTION FROM SCALDING
This water heater can deliver scalding temperature water at any faucet in the system if installed without installing
the supplied ASSE mixing device. By setting the thermostat on this water heater to obtain an increased water
temperature without properly installing the supplied mixing device, you may create the potential for scald injury.
To protect against injury, the supplied ASSE approved mixing device (a device to limit the temperature of water to
protect against scald injury via mixing hot and cold water supply) must be properly installed in the water system.
This valve will reduce point of discharge temperature in branch supply lines.
CAUTION
This water heater, when set at a lower temperature setting is not capable of producing hot water of sufficient
temperature for sanitizing purposes.
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 control panel power switch to the appliance and call a qualified service
agency.
NOTICE
The lower the temperature setting, the greater the energy efficiency, both to heat the water and to
maintain the storage temperature during standby periods. Lower water temperatures also extend tank
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.
The water heater temperature setting is adjusted by using the control display mounted to control surround jacket of the
water heater. The water heater thermostat is set at the lowest setpoint of 70F (21C) when shipped from the factory.
The control display shows the temperature setpoint in degrees Fahrenheit (F) or degrees Celsius (C), and the status
of the water heater (“Idle” or “Heating”). If the water heater is functioning normally, the display will also show
“Operational”.
For energy efficient operation of your water heater, the suggested initial temperature setting is 120F (49C). During the
winter season, or any cold period, you may desire a higher temperature setting to adjust for the colder incoming water.
This adjustment, however, may cause additional condensation to form on the cooler tank surface. This does not mean
the tank is leaking. During summer months, the warmer incoming water temperatures will benefit the performance of
your water heater and reduce the amount of condensation developed.
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Condensation does not mean your tank is leaking. Most of reported tank leaks on installation are proven to be
condensation. To avoid unnecessary inconvenience and expense, make sure the tank is leaking before calling an
independent servicing contractor or qualified service professional.
If the water heater is to remain idle for 30 days or more or is subjected to freezing temperatures while shut off, the water
heater and piping should be fully drained and the drain valve should be left fully open. Refer to the “General Operation”
section of this Installation and Operating Instructions Manual for the procedure on draining the water heater.
WARNING
If the water heater display does not show “Operational” in the “Status” indicator, there may be an operating
malfunction with the water heater. If this is the case, a numeric code will be displayed. Refer to the label next to
the display for the definition of the error code and call your plumbing professional or service agent to service the
water heater. Do not try to reset the water heater without having a qualified service person to diagnose and correct
the problem. If the display is blank or does not show an error code, make sure there is power to the water heater.
Setting the water temperature to the maximum set point can result in scalding hot water delivered to the faucets. It
is highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of
the installation. See following section to change the maximum setpoint limit (max setpoint). Make sure the water
heater control display is not in a public area that can result in the temperature settings being improperly adjusted.
See previous warning on scalds and an ASSE approved mixing valve.
NOTICE
When the maximum setpoint is reached, the display will show “Max Setpoint” without the setpoint value. The
maximum setting is equal to approximately 180˚F (82˚C).
The default temperature setpoint from the factory is 70˚F (21˚C).
Water Heater Display and Control Buttons
Shown flashing
in display only when
temp is adjusted
Temperature
Up Button
Sequence of
operation Indicator
Reads "Idle” or “Heating"
Temperature Setpoint
in Degrees F or Degrees C
Range 70 - Max °F
setpoint
°F
idle
Operational
Status
Range 21 - Max °C
Status Indicator
Read "Operational"
or "Service Needed"
SELECT
SET
Temperature
Down Button
Set button
Select button
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To Increase Setpoint Temperature
Step 1: Depress and hold “Temperature Up” button until desired setpoint temperature appears in the display.
°F
idle
Operational
Status
SELECT
SET
Step 1
Step 2: “Setpoint” indicator begins flashing in the display after pressing “Temperature Up” button.
"Setpoint"
flashes
setpoint
°F
idle
Operational
Status
SELECT
SET
Step 2
Step 3: Press “SET” button for new setting to take effect immediately. “Setpoint” will stop flashing. If the “SET” button is
not pressed, the new temperature setting will take effect in approximately 10 seconds.
"Setpoint" flashes
for 10 seconds
setpoint
°F
idle
Operational
Status
SELECT
SET
Press SET Button for setting
to take effect immediately
Step 3
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To Decrease Setpoint Temperature
Step 1: Depress and hold “Temperature Down” button until desired setpoint temperature appears in the display.
°F
idle
Operational
Status
SELECT
SET
Step 1
Step 2: “Setpoint” indicator begins flashing in the display after pressing “Temperature Down” button.
"Setpoint"
flashes
setpoint
°F
idle
Operational
Status
SELECT
SET
Step 2
Step 3: Press “SET” button for new setting to take effect immediately. The setpoint will stop flashing. If the “SET” button
is not pressed, the new temperature setting will take effect in approximately 10 seconds.
"Setpoint" flashes
for 10 seconds
setpoint
°F
idle
Operational
Status
SELECT
SET
Press SET for setting to
take effect immediately
Step 3
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To Change Temperature Format in Display from F to C or ˚C to ˚F:
Step 1: Press “SELECT” button until F/C is displayed.
°F °F/°C
idle
Operational
Status
SELECT
SET
Press select
Step 1
Step 2: Press “SET” button to change temperature format. Symbol F/C will flash.
°F °F/°C
idle
Operational
Status
SELECT
SET
°F/°C Flashes
Step 2
Step 3a: Press “Temperature Up” button to change temperature format to C.
Changes to "°C"
°C °F/°C
idle
Operational
Status
SELECT
SET
°F/°C Flashes
Step 3a
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Step 3b: Press “Temperature Down” button to change temperature format to F.
Changes to "°F"
°F/°C Flashes
°F °F/°C
idle
Operational
Status
SELECT
SET
Step 4: Press “SET” button to confirm ˚F or ˚C format. F/C will stop flashing. Setpoint display will appear in the format
selected (˚F or ˚C) in 10 seconds.
Symbol "°F/°C" Stops Flashing
°F °F/°C
idle
Operational
Status
SELECT
SET
Press Set
Step 4
Step 5: Pressing “SELECT” button will return display to setpoint in format selected (˚F or ˚C) immediately.
Setpoint shown in °F
°F
idle
Operational
Status
SELECT
SET
Press select
Step 5
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An automatic gas shut-off device (ECO) is incorporated in the sensor and control board which will shut off all gas supply
to the burner if the water heater temperature exceeds 200°F (93°C). Should the ECO function (open), the water
temperature should be reduced to approximately 120°F (49°C) and call a qualified service agent to place the water
heater in operation. The water heater must have the problem corrected by a qualified service person before putting the
water heater back in operation. It is recommended that all service work be performed by a qualified service agency.
If the water heater is to remain idle for 30 days or more or is subjected to freezing temperatures while shut off, the water
heater and piping should be fully drained (See “To Drain the Water Heater”) and the drain valve should be left fully
open.
WARNING
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long
period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink
before you use any electrical appliance which is connected to the hot water system. If hydrogen is present, there will
be an unusual sound such as air escaping through the pipes as hot water begins to flow. Do not smoke or have open
flame near the faucet at the time it is open.
SECTION X: MAINTENANCE
DANGER
DO NOT ATTEMPT TO REPAIR GAS VALVE.
DO NOT ATTEMPT TO REPAIR CONTROL BOARD.
DO NOT ATTEMPT TO REPAIR VENTURI.
DO NOT ATTEMPT TO REPAIR TRANSFORMER.
DO NOT ATTEMPT TO REPAIR PRESSURE SWITCH.
GENERAL
KEEP APPLIANCE AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
Water heater maintenance includes periodic tank flushing and cleaning, and removal of lime scale. The unit should be
inspected and adjusted to maintain proper combustion. Refer to Table 5, “Suggested Maintenance Schedule”. A
periodic inspection of the venting system should be made.
BURNER FLAME CHECK
At the time of installation and at monthly intervals, a visual check of the burner flames should be made to determine if
they are burning properly. The main burner may be seen through the sight glass window on the front of the combustion
insert mounting bracket (Figure 27). The burner flames should be a blue flame near the burner surface in a uniform
flame pattern. Occasional yellow or white streaks are normal.
WARNING
Do not run out of propane gas. Damage to the water heater may occur.
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Figure 27. Sight Glass Location
MAINTENANCE SCHEDULE
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials
stored against the water heater or vent-air intake system, and proper care must be taken to avoid
unnecessary contact (especially by children) with the water heater and vent-air intake system. UNDER
NO CIRCUMSTANCES MUST FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER
BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR
IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER OR VENT-AIR
INTAKE SYSTEM.
IMPORTANT
The water heater should be inspected at a minimum annually by a qualified service technician for
damaged components and/or joints not sealed. DO NOT operate this water heater if any part is found
damaged or if any joint is found not sealed.
Following are the instructions for performing some of the recommended maintenance. Unit inspection and adjustment
should be performed by a competent technician.
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Suggested Maintenance Schedule
COMPONENT
Tank
OPERATION
INTERVAL
Monthly
REQUIRED
Flushing
Sediment Removal
At least every 2
years
Replace as
Required
Anode Rods
Relief Valve
Inspect
Check Operation
Inspect
At least
annually
Proper Operation
Ignition
System
Check for proper
operation
Annually
Table 5.
FLUSHING WATER HEATER
1. Turn OFF the water heater electrical disconnect switch.
2. Open the drain valve and allow water to flow until it runs clean.
3. Close the drain valve when finished flushing.
4. Turn ON the water heater electrical disconnect switch.
DRAINING WATER HEATER
The water heater must be drained if it is to be shut down and exposed to freezing temperatures. Maintenance and
service procedures may also require draining the water heater.
1. Turn off the water heater electrical disconnect switch.
2. Connect a hose to the drain valve.
3. Locate hose’s discharge in an area where hot water will not cause any damage or injury.
4. Close the cold water inlet valve to water heater.
5. Open a nearby hot water faucet to vent the system.
6. Open the heater drain valve.
7. If the water heater is being drained for an extended shutdown, it is suggested the drain valve be left open during
this period.
FILLING WATER HEATER
1. Close the water heater drain valve by turning the knob or valve stem clockwise. If alternative water connections
are provided but not used, make certain they are plugged (i.e. rear connections).
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, combination temperature and pressure relief valve and the hot
and cold water connections.
SEDIMENT AND LIME SCALE REMOVAL
Waterborne impurities consist of the particles of soil and sand, which settle out and form a layer of sediment on the
bottom of the tank.
The amount of calcium carbonate (lime) released from water is in direct proportion to water temperature and usage.
The higher the water temperature or water usage, the more lime deposits are dropped out of the water. This is the lime
scale, which forms in pipes, water heaters and on cooking utensils.
Lime accumulation not only reduces the life of the equipment but also reduces efficiency of the water heater and
increases fuel consumption.
The usage of water softening equipment greatly reduces the hardness of the water. However, this equipment does not
always remove all of the hardness (lime). For this reason it is recommended that a regular schedule of deliming be
maintained.
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The depth of the buildup should be measured periodically. Water heaters will have about 3 inches (7.6 cm) of lime
buildup when the level of lime has reached the bottom of the cleanout opening or about 1 inch (2.5 cm) of lime buildup if
it has reached the drain valve opening. A schedule for deliming should be set up, based on the amount of time it would
take for a ½ inch (1.3 cm) buildup of lime.
Example 1: Initial inspection shows ½ inch (1.3 cm) of lime accumulation. Therefore, the water heater can be delimed
once a year.
To remove sediment and lime scale:
1. Drain the heater. Refer to DRAINING THE WATER instructions in this section.
2. Remove outer cover plate from lower side of water heater jacket.
3. Remove cover and gasket from cleanout opening.
4. Remove lime, scale or sediment using care not to damage the glass-lining.
5. Inspect cleanout plate gasket: Replace gasket if necessary (Contact Bradford White Local Distributor for
correct part number).
6. Install gasket and cleanout plate. Be sure to draw plate up tight by tightening screws securely.
7. Close the drain valve. Open a hot water fixture to allow air to escape. Open the cold water supply to water
heater and allow the tank to fill. Follow the lighting instructions.
8. Check for water leakage.
9. Install outer jacket cover plate.
ANODE INSPECTION AND REPLACEMENT
This water heater is equipped with multiple sacrificial anodes to extend tank life. The anode rod should be inspected
periodically (every 2 years) and replaced when necessary to prolong tank life. Water conditions in your area will
influence the time interval for inspection and replacement of the anode rods. Consult the plumbing professional who
installed the water heater or the manufacturer listed on the rating plate for anode replacement information. The use of a
water softener may increase the speed of anode consumption. More frequent inspection of the anode is needed when
using softened (or phosphate treated) water.
To inspect or replace an anode:
The anodes on this water heater are easily accessible from the top of the water heater making replacement simple and
quick. Use the following procedure to remove and inspect the anodes.
1. Drain the heater. Refer to DRAINING THE WATER HEATER instructions in this section.
2. Flush the heater. Refer to FLUSHING THE WATER HEATER instructions in this section.
3. Remove the combustion surround top by unlatching.
4. Remove the second pass access cover (if equipped).
5. Remove the second pass insulation.
6. Remove the second pass collector cover.
7. Remove the anode using a socket of the appropriate size. Sometimes a breaker bar will need to be used. Do
not use an impact wrench.
8. Inspect and replace the anode as required. Use pipe tape or sealant when reinstalling the anode.
9. Close the drain valve. Open a hot water fixture to allow air to escape. Open the cold water supply to water
heater and allow the tank to fill.
10. Check your anode and drain valve for leaks.
11. Replace second pass collector cover. Make sure to clean off any sealant and reseal before fastening.
12. Replace second pass insulation.
13. Replace second pass access cover.
14. Replace combustion surround top and latch it securely in place.
15. Follow the lighting instructions.
DRAIN VALVE AND TANK ACCESS PANEL
The water heaters are equipped with a ¾ inch (1.9 cm) drain valve.
An access panel covers the cleanout opening in the tank, which is sealed by a gasket and cover.
RELIEF VALVE
At least once a year, check the combination temperature and pressure relief valve to insure that the valve has not
become encrusted with lime. Lift the lever at the top of the valve several times until the valve seats properly without
leaking and operates freely.
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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.
If the combination temperature and pressure relief valve on the water heater discharges periodically, this may be due to
thermal expansion in a closed water supply system. Contact the water supplier or local plumbing inspector on how to
correct this situation. Do not plug the combination temperature and pressure relief valve outlet.
WARNING
Above all, do not plug the temperature and pressure relief valve. This is not a solution and can create a
hazardous situation.
VENT AND AIR INTAKE SYSTEM
Examine the vent and air intake system at least annually. Points of inspection are as follows:
1. Check for obstructions and/or deterioration of vent piping and vent terminal. Replace immediately where
needed.
2. Vent pipe and vent terminal screen should be cleaned of any foreign material. The screen is located inside the
vent terminal outlet and is accessible from the outside of the vent terminal elbow. Do not reach inside the vent
terminal when the water heater is in operation.
3. Check all venting system connections for leakage and reseal as required.
COMBUSTION SYSTEM INSPECTION
Inspect the operation of the combustion system annually. Use the following procedure to inspect the combustion
system.
1. Adjust the thermostat to the Min. setting.
2. Turn off the main power switch of the water heater.
3. Remove the top of the combustion surround by unlatching it.
4. While observing the water heater display, turn on the main power switch.
5. Adjust thermostat to the Max. setting.
6. Watch the water heater display status indicator as the control goes through the sequence of operation as
previously described.
7. Upon ignition, observe the main burner flame.
8. Readjust thermostat to previous setting.
9. Replace combustion surround top and latch it securely in place.
WARNING
Do not run out of propane gas. Damage to the water heater may occur.
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SECTION XI: DIAGNOSTIC AND TROUBLESHOOTING GUIDE
DIRECT SPARK HONEYWELL INTEGRATED CONTROL SYSTEM
SEQUENCE OF OPERATION
1. When the tank temperature drops below the temperature setpoint on the display, the control sends power to the
combustion blower for a 30 second pre-purge period.
2. At the end of the pre-purge period, the control sends high voltage through the spark cable to the spark rod to spark
to the burner. The gas valve also opens. If the burner lights, a microamp current is generated through the flame
sense rod allowing the control to detect burner flame. The sparking then ceases and the flame is monitored by the
flame sense circuit until the tank temperature reaches the thermostat setpoint and turns off the gas valve.
3. If the burner fails to light, the gas valve closes, sparking to the burner stops, and the combustion blower continues
to operate for 60 seconds to purge the heat exchanger of unburned gas. The ignition trial is repeated. The control
will make 3 attempts to ignite the burner. If the burner fails to light after the third attempt, the control enters “Soft
Lockout”, which is an idle period for 60 minutes. There will be an error code 62 or 63 shown on the water heater
display indicating that the control cycled through the maximum number of ignition retries for ignition. The control will
make another 3 ignition attempts after the 1 hour waiting period.
4. If the exhaust vent terminal should become blocked or the condensate drain becomes plugged, the exhaust vent
pressure switch will open and the gas valve closes. The combustion blower will continue to operate. An error code
29 is shown on the water heater display. Removing the blockage will resume normal operation.
5. The burner flame is monitored by the flame sense circuit and if the flame should extinguish, the gas valve closes
and the combustion blower will operate to purge the heat exchanger before making an attempt to relight the burner.
There may be 3 attempts to relight the burner before going into the Soft Lockout period explained previously.
6. The burner will continue to operate during the heating cycle until the tank temperature reaches the setpoint. The
gas valve opens and the combustion blower continues to operate for 30 seconds to purge the heat exchanger of
flue gases.
7. If for some reason, the tank temperature should exceed 200°F (93°C), then the control closes the gas valve and
goes into a “Hard Lockout” state and will not operate until reset by a qualified service person. The display will read
error code “65”, which indicates the tank high limit temperature has been exceeded. No attempt should be made to
reset the control until a service person has corrected the cause of the high limit condition. Refer to the diagnostic
service section at the end of this Installation and Operating Instruction Manual.
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ACCESSING SERVICE MODE ON THE WATER HEATER DISPLAY (FOR SERVICE
PERSONNEL ONLY)
The display has a “Service Mode” for changing the maximum setpoint and accessing information in aiding servicing of
the water heater. This procedure is for service and installation personnel only. To enter the Service Mode, follow the
steps illustrated below:
WARNING
The following procedure is for service and installation personnel only. Resetting lockout conditions
without correcting the malfunction can result in a hazardous condition.
Step 1: Press “Select” and “Temperature Up” buttons together and hold for 3 seconds until “Max Setpoint” is shown in
the display.
"Max Setpoint"
next to Temperature
Setpoint value.
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
NOTICE
30 Seconds after the last button press, the display will automatically return to the “User Mode”.
Simultaneously pressing the “Select” and “Temperature Up” buttons will switch the display immediately to
the “User Mode”.
Step 2: Pressing “Select” button will change display to next mode
Water
Temp
°F
idle
Operational
Status
SELECT
SET
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The following is the sequence of modes available in “Service Mode” by pressing the “Select”
button:
Error Code Number (Display/Reset). This is only shown if there is an operating error in the “User Mode”.
Error Code Shown
in Water Heater Display
Status Service Needed
SELECT
Lockout RESET
1. Max Setpoint (Display/Change)
Max Setpoint value in
Water Heater Display
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
2. Water Temperature Sensor Reading.
Water Temp
°F
idle
Operational
Status
SELECT
SET
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3. Flame Current of Pilot Flame Sensor (Displays only in the Heating Cycle)
µA
Heating
Flame Current
Operational
Status
SELECT
SET
4. Setpoint (Display/Change)
setpoint
°F
idle
Operational
Status
SELECT
SET
5. ˚F/˚C (Display/Change)
°F °F/C°
idle
Operational
Status
SELECT
SET
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6. Differential (Display only – shows the differential of the thermostat)
Differential
°F
idle
Operational
Status
SELECT
SET
7. Software Version (Display only)
Soft
idle
Operational
Status
SELECT
SET
8. Error Code History (Displays if there are present error codes or up to 10 previous error codes). Water Heater Display
will show -- if there are no error codes.
No current error codes
idle
Operational
Status
SELECT
SET
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To change the Maximum Setpoint Limit (Max Setpoint) for the temperature setpoint:
WARNING
Setting the water temperature to the maximum set point can result in scalding hot water delivered to the
faucets. It is highly recommended that the maximum setpoint be adjusted to the lowest temperature
possible for the needs of the installation. See following section to change the maximum setpoint limit
(max setpoint). Make sure the water heater control display is not in a public area that can result in the
temperature settings being improperly adjusted. See previous warning on scalds and an ASSE approved
mixing valve.
Step 1: In service mode press the “Select” button until “Max Setpoint” is displayed.
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
Step 2: Press “Set” button to enter setting mode. “Max Setpoint” will flash to indicate setting mode.
"Max Setpoint" Flashes
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
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Step 3: Press the “UP” or “DOWN” buttons to change the maximum setpoint value. This will limit the maximum setpoint the
user can select. Note: The maximum setpoint is approximately 180˚F (82˚C).
"Max Setpoint" continues to flash
while making adjustments
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
Step 4: Press “Set” button to confirm new “Max Setpoint” value and stop setting mode.
"Max Setpoint" stops flashing
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
Step 5: 30 Seconds after the last button press, the Water Heater Display will go back to “User Mode”. It will read “Max
Setpoint” without showing a temperature value if the temperature setpoint is at the maximum setting. The Water Heater
Display can be set back to the “User Mode” immediately by pressing both the “Temperature Up” and “Select” buttons
together for 3 seconds.
Max
Setpoint
idle
Operational
Status
SELECT
SET
Exiting Service Mode
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Display of Water Temperature:
Step 1: In Service Mode, Press the “Select” button until “Water Temp” is displayed in the upper right section of the water
heater display. This is the reading for the tank sensor.
Water
Temp
°F
idle
Operational
Status
SELECT
SET
To Display Flame Sense Current of the Pilot Flame Sensor:
The pilot flame sense current is available only when the burners are in operation. Step 1: Make sure the status displays
“Heating” or draw enough hot water to start the burners. Step 2: Enter the “Service Mode” described previously. Step 3:
Press the “Select” button until a number value is displayed with “Flame Current” to the right of the number. The value
displayed is in microamps (µA).
Current
µA
Heating
Operational
Status
SELECT
SET
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To Display and Change Temperature Setpoint:
Step 1: In “Service Mode” press the “Select” button until “Setpoint” is shown in the water heater display.
setpoint
°F
idle
Operational
Status
SELECT
SET
Step 2: Press the “Set” button to enter the setting mode. “Setpoint” will flash in the water heater display.
"Setpoint" Flashes
setpoint
°F
idle
Operational
Status
SELECT
SET
NOTICE
Note: The maximum temperature that can be set in the Water Heater Display is limited to the “Max
Setpoint” described previously. To change the “Max Setpoint”, refer to the procedure “To Change the
Maximum Setpoint Limit…” described previously under “Accessing the Service Mode on the Water Heater
Display”.
Step 3: To raise the temperature setpoint, press the “Temperature Up” button until the desired temperature is
shown on the water heater display.
"Setpoint" Flashes
setpoint
°F
idle
Operational
Status
SELECT
SET
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Step 4: To lower the temperature setpoint, press the “Temperature Down” button until the desired temperature is shown
on the water heater display.
"Setpoint" Flashes
setpoint
°F
idle
Operational
Status
SELECT
SET
Step 5: When the desired setpoint is reached on the water heater display, press the “Set” button to confirm the new
setpoint. “Setpoint” stops flashing in the water heater display.
"Setpoint" Stops Flashing
setpoint
°F
idle
Operational
Status
SELECT
SET
To Display and Change Temperature Format (˚F/˚C):
To Change Temperature Format in Display from ˚F to ˚C or ˚C to ˚F:
Step 1: While in “Service Mode”, press “Select” button until “˚F/˚C” is shown in the upper right portion of the water heater
display.
°F °F/C°
idle
Operational
Status
SELECT
SET
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Step 2: Press “Set” button to change temperature format. “˚F/˚C” symbol will flash in the water heater display.
"°F/°C" Flashes
°F °F/C°
idle
Operational
Status
SELECT
SET
Step 3a: Press “Temperature Up” button to change temperature format to ˚C.
Changes to "°C"
"°F/°C" Flashes
°C °F/C°
idle
Operational
Status
SELECT
SET
Step 3b: Press “Temperature Down” button to change temperature format to ˚F.
Changes to "°F"
"°F/°C" Flashes
°F °F/C°
idle
Operational
Status
SELECT
SET
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Step 4: Press “Set” button to confirm ˚F or ˚C format. ˚F/˚C will stop flashing.
"°F/°C" Symbol Stops Flashing
°F °F/C°
idle
Operational
Status
SELECT
SET
Step 5: Pressing “Select” button will return display to setpoint in format selected (˚F or ˚C) immediately.
Setpoint shown in °F
°F
idle
Operational
Status
Lower Sensor
SELECT
SET
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How to reset the control from Lockout Conditions:
WARNING
The following procedure is for service and installation personnel only. Resetting lockout conditions
without correcting the malfunction can result in a hazardous condition.
If an error code is displayed (except for #4, low flame sense current), the water heater will be in a “lockout condition”
with the water heater display showing the error code number and “Service Needed” in the status section of the display
window. Error codes 62 (maximum number of retries detected) and 63 (maximum number if ignition recycles detected)
are “Soft Lockouts” in which the control can be reset in the “User Mode” by pressing the lower right button under
“Lockout Reset” shown in the lower right portion of the display. The control will also go through 3 attempts to relight the
burners every hour in the soft lockout condition.
Resetting Error Codes in Soft Lockout Condition
Error Code Shown in
Water Heater Display
Status Service needed
SELECT
Lockout RESET
Press for 2 seconds
All other error codes will put the water heater into a “Hard Lockout” condition, in which the water heater will not operate
and cannot be reset in the “User Mode”. To reset a hard lockout, first enter the “Service Mode” described earlier by
pressing both the “Temperature Up” and “Select Buttons” at the same time for 3 seconds. Then press the lower right
button under “Lockout Reset” in the water heater display and hold for 3 seconds.
Resetting Error Codes in Hard Lockout Condition
Error Code Shown in
Water Heater Display
Status Service Needed
SELECT
Status Service Needed
SET
SELECT
Lockout RESET
Step 2: Press for 3 seconds to
reset control in service mode.
Step 1: Press for 3 seconds
to enter service mode.
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Error Codes and Error History Display:
If there is an operating problem with the water heater, an error code number will appear on the water heater
display with “Service Needed” to the right of the “Status” indicator. The error code label is located below the
water heater display and the following section in this Installation and Operating Instruction Manual explains the
error codes with corrective actions to repair the water heater.
Example of Error Code in the Display:
idle
Service Needed
SELECT
SET
Error Code History:
In “Service Mode” pressing the “Select” button after the “Software Version” (item 8 in the previously
described sequence of service modes) will show an error code history, if there have been any previous
operating problems with the water heater. If the display shows --, there is not a current error code.
The Water Heater Display will provide up to 10 previous error codes. The oldest error code will be stored in
code index #1 and the most recent in code index #10 (if there are 10 error codes).
To view previous error codes:
Step 1:
In “Service Mode” press the “Select” button until the next display after the “Software Version”. If there are no current error
codes, the display will show -- .
No Current Error Code
°F
idle
Operational
Status
SELECT
SET
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Step 2:
Press the “Temperature Down” button to select the error code index, starting with the most recent error code “10”.
Error Code Index
idle
Operational
Status
SELECT
SET
Step 3:
Press the “Select” button to view the error code for “code 10”. If there is a number displayed, note what the number is.
The label next to the water heater display will identify the code number. If no number is displayed with only a “--” in the
water heater display, then there has not been an error code for error code index 10.
No Error Code Shown
for Code Index 10
idle
Operational
Status
SELECT
SET
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Step 4:
Press the “Temperature Down” button to change to the previous code index, code #9.
Error Code Index
idle
Operational
Status
SELECT
SET
Step 5:
Press the “Select” button for code index #9 to view if there are any code numbers.
Stored Error Code
For Code Index #9
idle
Operational
Status
SELECT
SET
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Step 6: Continue pressing the “Temperature Down” button to change to the next error code index and press
“Select” to view the error code number, if any, for that index number. Continue on to index #1, the oldest error
code index. The water heater display will store up to 10 error codes with the oldest code starting in code index
#1 with the most recent code in code index #10.
Step 7: 10 seconds after the last button press, the Water Heater Display will revert back to the current error
code display. To exit Service Mode, either wait 30 seconds or press Temperature Up button and Select Button
for 3 seconds.
setpoint
°F
idle
Operational
Status
SELECT
SET
Exiting Service Mode
DIAGNOSTIC ERROR CODES AND TROUBLESHOOTING PROCEDURES FOR EF MODELS WITH HONEYWELL
INTEGRATED DIRECT SPARK IGNITON CONTROL SYSTEM
Error
Code
Definition of Code
Cause of Problem and Actions Taken to Correct
Check power supply to the water heater. Make sure water heater is plugged in
and the breaker is on. Check if there is 120 volts power supply to the LINE
connections on the control board. If 120 volts is present, check for 24 volts
output to SECONDARY terminals on the Control Board. Check for loose wires,
defective transformer. Check wire harness connections from display to the
control board.
No code –
blank
display
Determine flame sense current in the Service Mode with the water heater
operating. If less than 4.0 microamps, check burner flame sense rod and wire.
Clean flame sense rod with emery cloth. If problem is not solved, check for
debris clogging burner or replace flame sense rod.
Low Flame Sense
Current
4
6
Flame Sensed Out of
Normal Sequence
Check to make sure gas valve has closed. No voltage should be present at the
(Before Opening Gas gas valve before or after ignition cycle. Make sure wire positions on the wire
Valve or After
harness are correct. If gas valve is stuck open, replace.
Closing Gas Valve)
Check to make sure gas valve has closed. No voltage should be present at the
gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
Flame Detected
Before Ignition
23
24
Flame Detected After Check to make sure gas valve has closed. No voltage should be present at the
Heating Cycle
Completes
gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
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Error
Code
Definition of Code
Cause of Problem and Actions Taken to Correct
The blocked vent pressure switch contacts have opened. Check to make sure
the venting system is not blocked. Check to make sure the condensate drain is
not clogged and is sloping toward the drain. Make sure the vent length does
not exceed the specified limits. Make sure the vent terminal is not blocked.
Check to make sure the pressure switch tubing is clear. Replace the pressure
switch if the venting system has checked out O.K. Control will reset once
problem is corrected.
Pressure Switch
Failed to Close
29
Lower Sensor
Readings Faulty
Resistance of lower sensor out of operating range. Check continuity of wire
harness to lower sensor, and if O.K., replace lower sensor.
Pilot flame sensor rod is shorted to ground. Check to see if flame sensor wire
has bare spots touching metal parts of if flame sensor rod is touching the burner
or other metal parts. Replace if flame sense wire is damaged or flame rod is
bent.
32
57
Flame Rod Shorted
to Ground
AC Line Frequency
Error – Signal Too
Noisy or Frequency
Incorrect
Check line voltage frequency to the water heater. Determine if there are wide
fluctuations. Call an electrician if the problem persists. The water heater
should be on a separate line.
58
Line Voltage Too
Low or High
Check line voltage to the water heater. Determine cause of low or high voltage.
Call an electrician or your utility. The water heater should be on a separate line.
59
61
Check line voltage to the water heater for erratic readings. Also check wiring to
make sure there are no shorts. If power supply and wiring are O.K., replace
control board.
DC Output Voltage
Unstable
Burner is either not lighting or not staying lit during ignition cycle. Check inlet
gas pressure for minimum pressure on rating label. Can you hear sparking to
the burner? Check high voltage cable connections. Check inlet gas pressure
to the gas valve making sure the pressure is within the limits specified on the
rating label. Check gas valve wire harness for broken wires or shorts. Check
outlet gas pressure. If 24 volts is present to the terminals at the gas valve,
replace gas valve. Check for voltage output to the blue gas valve wires on the
control board pins. If during the ignition trial period, there is no voltage present
at the control board pin terminals for the blue wires leading to the gas valve,
then replace the control board. Replace spark rod if insulator is damaged or
rod is loose. Check to make sure combustion blower is operating when
thermostat calls for heat. If blower is not running check for 120 volts to blower
harness and then at blower pin connections. Replace control, wire harness, or
blower if defective. Check to make sure vent terminals are clear of debris or
snow and ice. Make sure the condensate drain flows freely.
Maximum Number of
Retries Detected
62
Burner flame is lost during run cycle, then re-established on ignition cycle.
Check inlet gas pressure. Is gas pressure dropping below the minimum
operating pressure on the rating label after the gas valve opens? Is the gas
Maximum Number of pipe size to the water heater adequate? Check the condition of the burner.
63
Ignition Recycles
Detected
Clean or replace as needed. Check the burner flame and observe the
microamp output on the run cycle. Replace burner if clogged with dirt and
debris. Replace spark rod or flame sensor if damaged. Check to make sure
vent terminals are clear of debris or snow and ice. Make sure the condensate
drain flows freely.
64
65
Electronics Failure
Replace control board.
Water temperature in tank has exceeded 200°F (93°C). Check tank sensor.
Make sure sensor is fully inserted into the well (clip on sensor wire secures
sensor in place). Check sensor reading. If not within specifications, replace
sensor. If sensor and wire harnesses check O.K., replace control board.
High Water
Temperature (Over
200°F (93°C))
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Procedure for Checking Thermostat Sensors
Set the thermostat above water temperature (See temperature adjustment section) and observe system through one (1)
complete cycle. Make sure system operates as desired.
To check the sensor assembly, compare the resistance of the sensor wires (either outside black to center wire with
yellow marking) as measured by an ohmmeter to the water temperature as measured by an accurate thermometer.
Thermistor resistance increases as the temperature decreases. The tables below show the correct sensor resistance at
various temperatures. Both thermistors in the sensor assembly should have approximately the same readings.
Replace the sensor if the ohm reading in the chart does not approximate the reading from the sensor at the temperature
measured in the tank. Use a thermometer or thermocouple to measure the temperature from the hot water outlet or
T&P valve.
In Degrees F
°F
40
0
1
2
3
4
5
6
7
8
9
26109 25400 24712 24045 23399 22771 22163 21573 21000 20445
19906 19383 18876 18383 17905 17440 16990 16553 16128 15715
15314 14925 14548 14180 13823 13477 13140 12812 12494 12185
50
60
70
11884 11592 11308 11032 10763 10502 10248 10000
9760
7685
6098
4873
3922
3177
2590
2124
1753
1454
1213
1017
857
9526
7507
5961
4767
3839
3112
2538
2083
1720
1427
1191
999
80
9299
7333
5827
4663
3758
3048
2488
2043
1688
1402
1170
982
9078
7165
5697
4562
3679
2986
2439
2004
1656
1376
1150
965
8862
7000
5570
4464
3602
2925
2391
1966
1625
1351
1129
949
8653
6839
5446
4368
3527
2866
2344
1928
1595
1327
1110
933
8449
6683
5326
4274
3453
2808
2298
1891
1566
1303
1090
917
8250
6531
5208
4183
3382
2752
2253
1856
1567
1280
1071
901
8057
6383
5094
4094
3312
3697
2209
1820
1509
1257
1053
886
7869
6238
4982
4006
3244
3643
2166
1786
1481
1235
1035
871
90
100
110
120
130
140
150
160
170
180
190
200
842
828
814
801
788
775
762
749
737
725
713
In Degrees C
°C
0
0
1
2
3
4
5
6
7
8
9
32648 31026 29495 28049 26682 25389 24166 23010 21915 20879
19898 18968 18088 17253 16461 15710 14998 14322 13680 13071
10
20
30
40
50
60
70
80
90
12492 11942 11419 10922 10450 10000 9572
9165
6016
4042
2774
1942
1385
1005
741
8778
5775
3889
2675
1876
1340
974
8409
5546
3742
2579
1813
1297
944
8057
5327
3602
2488
1752
1256
916
7722
5117
3468
2400
1693
1216
888
7403
4917
3340
2316
1637
1177
861
7099
4726
3217
2235
1582
1140
835
6808
4543
3099
2157
1530
1105
810
8532
4368
2986
2083
1480
1070
786
6268
4201
2878
2011
1432
1037
763
719
698
Manufactured under one or more of the following U.S. Patents: RE.34,534;
B1 5,341,770; 4,416,222; 4,628,184; 4,669,448; 4,672,919; 4,808,356; 4,829,983;
4,861,968; 4,904,428; 5,000,893; 5,023,031; 5,052,346; 5,081,696; 5,092,519;
5,115,767; 5,199,385; 5,277,171; 5,372,185; 5,485,879; 5,574,822; 5,596,952;
5,660,165; 5,682,666; 5,761,379; 5,943,984; 5,954,492; 5,988,117; 6,142,216;
6,684,821; 7,063,132;
Other U.S. and Foreign patent applications pending. Current Canadian Patents:
1,272,914; 1,280,043; 1,289,832; 2,045,862; 2,092,105; 2,107,012; 2,108,186;
2,112,515
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SECTION XII: PARTS LIST
EF™ – Series Water Heater
1 Combustion Surround Assembly
2 Burner Assembly (Specify model)
3 2nd Pass Top Collector Cover
4 Screw 10-16 x ¾
5 Vent Termination Elbow
6 Thermostat Sensor Probe
7 Baffle 4” Flue (Specify Model)
8 Mag. Rod Assembly
9 Baffle 2” Flue
10 Wire Harness-Service Panel
11 Plastisert Nipple 1” NPT
12 Plug
13 Nipple
14 T&P Relief Valve
15 Exhaust Pipe (PVC) w/ Barb Tap
16 Condensate Trap Elbow
17 Silicone hose
18 Outer Door Service Panel (Specify model)
19 Vent Pipe Support Bracket
20 NSF Escutcheon
21 Exhaust Pressure Switch
22 Nuts
23 Collector Limit Switch
24 Screw 6-32 x ⅜
25 Cleanout Access Cover
26 Cleanout Gasket
27 Screw 5/16 - 18 x ¾ HH Grade 5
28 Cleanout Cover
29 Cold Water Inlet (Hydrojet) Assembly
30 No Handle Brass Drain Valve
31 Concentric Vent System (Optional)
32 Thermostatic Mixing Valve
33 3” to 2” PVC Reducer
Customer must specify
complete model number and
serial number when ordering
service parts.
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Combustion Surround
1 Assembly
AA Keeper Latch & Catch
BB Screw 8-32 x ½ RHCR
CC Control Panel Assembly
DD Jacket Head 28 ¼" Grey
EE Switch Main Power
FF Control Display
GG Combustion Surround
Customer must specify complete model number and serial number when ordering
service parts.
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2 Combustion Assembly (pictured previous page)
1A Combustion Assembly (Specify model) 14A Inlet (PVC)
Blower/Gas Valve Assembly (Specify
2A model)
Gasket Blower Transition (Specify
15A model)
3A Burner Assembly (Specify model)
16A Screw 8-32 x ¼ RHCR
4A Blower – EBM (Specify model)
17A Gasket Flame Sensor
5A Silicone Hose
18A Flame Sensor
19A Transition Tube
20A Nut Hex Washer
21A Gasket Spark Rod
22A Spark Rod
6A Burner Mounting Insert Gasket
7A Screw 10-32 x ¾ SHCS
8A Gasket & Screw
9A Gas Valve (Specify model)
10A Nipple 1/2 NPT x 3"
23A Burner Mounting Gasket
11A Reducer ¾ x ½ NPT (or ¾” x 1” for 399) 24A Burner 21 Port
12A Nipple ¾ NPT x 6" (or 1” NPT for 399) 25A Burner Mounting Gasket
2" dia. Flex Reducer (or PVC reducer
13A for 399)
26A Burner Mounting Insert
CC Ignition Control Assembly
1C Control Mounting Panel
2C Thermostat PC Board
3C Transformer – 120/24 VAC
4C Terminal
9C Secondary Transformer Harness
10C Blower Harness
11C Power Switch Harness
12C Powered Anode Harness (399 only)
Black Powered Anode Wire Assembly (399
13C only)
5C Terminal Strip
Powered Anode Control (399
6C only)
White Powered Anode Wire Assembly (399
14C only)
Green Powered Anode Wire Assembly (399
15C only)
7C Controller harness
8C Primary Transformer Harness 16C Sensor Wire Assembly (399 only)
Customer must specify complete model number and serial number when ordering service parts.
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NOTES
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NOTES
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NOTES
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