POWERED DIRECT VENT SERIES GAS-FIRED
COMMERCIAL WATER HEATER
(INDEPENDENT PVC VENTING)
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 serviced by a
plumbing professional.
INSTALLATION/OPERATION MANUAL
WITH TROUBLESHOOTING GUIDE
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
238-47707-00E
REV 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.
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.
Toxic chemical, 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
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.
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
technician 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.
For installations in high altitude regions, this water heater must be ordered from the supplier to the manufacturer’s
specifications for that particular altitude. Contact the company listed on the rating plate when ordering high altitude
constructed water heaters.
Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty.
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.
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.
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 in this Installation/Operation Manual 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.
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 is to be:
a) Sealed to the floor with sealant, in a smooth and easily cleanable way, or
b) Installed with an optional leg kit that includes legs and/or extensions that provide a minimum clearance of 6”
beneath the water heater.
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SECTION II: SPECIFICATIONS
Figure 1. Dimensional layout
Model Description
Input (BTU/hr)
Nat. LP
Dimensions for Figure 1
Capacity
(Gal)
100
100
100
80
A
(In.)
B
C
D
E
(In.)
(In.)
(In.)
(In.)
199,999 199,999
150,000 150,000
250,000 225,000
250,000 225,000
199,999 199,999
150,000 150,000
72.13
72.13
72.13
63.13
63.13
63.13
60.31
60.31
60.31
51.31
51.31
51.31
77.19
77.19
82.13
68.19
68.19
68.19
56.81
56.81
56.81
47.81
47.81
47.81
74.13
74.13
74.13
65.13
65.13
65.13
80
80
Model Description
Dimensions for Figure 1
Capacity
(Liter)
378.5
378.5
378.5
302.8
302.8
302.8
Input (kW/hr)
A
(cm)
B
(cm)
C
(cm)
D
(cm)
E
(cm)
Nat.
58.6
43.9
73.2
73.2
58.6
43.9
LP
58.6
43.9
65.9
65.9
58.6
43.9
183.2
183.2
183.2
160.4
160.4
160.4
153.2
153.2
153.2
130.3
130.3
130.3
196.1
196.1
208.4
173.2
173.2
173.2
144.3
144.3
144.3
121.4
121.4
121.4
188.3
188.3
188.3
165.4
165.4
165.4
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SECTION III: GENERAL INFORMATION
FEATURES
1. Porcelain enamel lined tank provides corrosion protection with a tough glass lining on the interior of the tank.
2. Magnesium anodes provide an extra measure of protection and extends tank life.
3. Direct Vent design with an induced draft blower. Flue gases are exhausted and combustion air is taken from outside
the building through 3” or 4” PVC, CPVC, or ABS pipe. Maximum venting distance for each pipe of 40 feet with one
elbow for 3” diameter pipe and 55 feet with one elbow for 4” diameter pipe. May be horizontally or vertically vented.
See venting section for complete details.
4. Hand Hole Cleanout allows inspection of tank interior and allows the removal of lime and sediment deposits.
5. Honeywell Integrated Water Heater has the following features:
Attractive digital water heater display on control panel for precisely setting and displaying the temperature setpoint.
Pressing temperature up and down buttons changes the temperature setpoint. Temperature format may be
displayed in degrees F or degrees C.
Single control board with plug in wiring controls temperature, ignition, and induced draft blower operation.
Reduced number of parts for servicing and wiring.
Plug in wiring reduces chance of miswiring.
Water heater display will show diagnostic codes in the event the water heater needs servicing. Aids in diagnosing
and servicing the water heater. Temperature of the tank sensors can be monitored in the Service Mode.
Water heater display can show up to 10 previous error codes to further aid in servicing the water heater.
WARNING
Keep clear of 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, ANS Z21.22 and the Standard CAN1-4.4 Temperature, Pressure, Temperature and
Pressure Relief Valves and Vacuum Relief Valves. The combination temperature and pressure relief valve must be
marked with a maximum set pressure not to exceed the maximum working pressure of the water heater. The
combination temperature and pressure relief valve must also have an hourly rated temperature steam BTU
discharge capacity not less than the hourly rating of the water heater.
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 a 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 six (6) inches (15.2 cm) above, or any distance below the structural floor and cannot contact any live electrical
part. The discharge line is to be installed to allow for complete drainage of both the combination temperature and
pressure relief valve and the discharge line. The discharge opening must not be subjected to blockage or freezing.
DO NOT thread, plug or cap the discharge line. It is recommended that a minimum clearance of four (4) inches
(10.2 cm) be provided on the side of the water heater for servicing and maintenance of the 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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DISHWASHING MACHINE REQUIREMENTS
All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water
flow pressures between 15 and 25 pounds per square inch. Flow pressures above 25 pounds per square inch, or below
15 pounds per square inch, will result in improperly sanitized dishes.
The National Sanitation Foundation also recommends circulation of 180°F water. Where this is done, the circulation
should be very gentle so that it does not cause any unnecessary turbulence inside the water heater. The circulation
should be just enough to provide 180°F water at the point of take-off to the dishwashing machine. Adjust flow by means
of the valve in the circulation line.
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SECTION IV: INSTALLATION INSTRUCTIONS
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED
TRADESMAN IN THE FIELD INVOLVED.
ELECTRICAL WORK ARE REQUIRED.
PLUMBING, AIR SUPPLY, VENTING, GAS SUPPLY AND
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!
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 four (4) inches (10.0 cm) measured from the jacket of the water heater. The drain pan, as
described above, can be purchased from your plumbing professional. The drain pan must be piped to an adequate
drain. The piping must be at least 3/4 inch (2.0 cm) in diameter and pitched for proper drainage. It is recommended
that a minimum clearance of four (4) inches (10.2 cm) be provided on the side of the water heater for servicing and
maintenance of the combination temperature and pressure relief valve.
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against
the water heater and proper care must be taken to avoid unnecessary contact (especially by children) with the water
heater components. UNDER NO CIRCUMSTANCES SHALL 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.
Failure to adhere to these installation and operating instructions may create a hazard to life and property and will
nullify the warranty.
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Minimum Clearances
CAUTION
The National Fuel Gas Code (ANSI Z233.1- latest edition) or in Canada The Natural Gas or Propane
Installation Code CAN/CGA (B149.1, B149.2- latest edition), expressly prohibits the following:
a. Installation of a water heater in a bathroom, bedroom, or any occupied room normally kept closed.
b. Installation of a water heater in a garage, unless the unit is installed so that the burner and ignition devices are
at least eighteen (18) inches (45.8 cm) above floor level and protected to avoid damage by a moving vehicle.
If the buildings 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.
The location of this water heater is of the utmost importance. Before installing this water heater, you should read the
Installation section of these instructions. After reading these Installation and Operating Instructions, select a location for
the water heater where the floor is level and is easily accessible to water lines, gas supply (type identified on the rating
plate), an adequate open drain, and within the maximum specified venting distance to an outside wall or roof for the direct
vent terminal. DO NOT locate the water heater where water lines could be subjected to freezing temperatures.
Make sure the cold water pipes are not located directly above the gas control so that condensate during humid
weather does not drip or accumulate on the controls.
This installation must allow access to the front of the water heater and adequate clearance must be provided for servicing
and operating this water heater. The water heater may be installed on either a combustible or non-combustible floor. If
the water heater is to be installed directly on carpeting, it must be installed on top of a metal or wood panel (or equivalent)
extending beyond the full width and depth of the appliance by at least three (3) inches (7.6 cm) in any direction or, if the
appliance is to be installed in an alcove or closet, the entire floor must be covered by the panel. The minimum clearances
to combustibles for this water heater are given on the following pages. A minimum of 24 inches (61 cm) front clearance
must be provided for inspection and servicing. Adequate clearances must be provided for easy access to controls by
service personnel to enable proper cleaning, servicing, and operation of the water heater. Under no circumstances is the
front of the water heater to be placed in a position where the burner tray assembly cannot slide out for removal when
servicing.
This water heater MUST be installed indoors out of the wind and weather.
Note: For California installation this water heater must be braced, anchored, or strapped to avoid falling or
moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained
from DSA Headquarters Office, 1102 Q Street, Suite 5100, Sacramento, California 95811.
Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical
vapors. Examples of some typical compounds that are potentially corrosive are: spray can propellants, cleaning solvents,
refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes and process
chemicals. These materials are corrosive at very low concentration levels with little or no odor to reveal their presence.
NOTICE
DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED
BY THE WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE HAS OR WILL OCCUR. DO
NOT STORE ANY POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER OR
THE DIRECT VENT TERMINAL.
This water heater may be installed in an alcove on combustible flooring with clearances from combustible materials
as shown in the following clearances illustration of this Installation and Operation Instruction Manual.
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 the manufacturer noted on the
rating plate label.
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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 COMBUSTIBLE FLOOR.
3. Proper venting practices must be considered when selecting a location for this water heater. For exact venting
specifications, please consult the Venting section of these Installation and Operating Instructions.
4. It is recommended that a minimum clearance of four (4) inches (10.2 cm) be provided on the side of the water
heater for servicing and maintenance of the combination temperature and pressure relief valve.
5. Increase distances to provide clearance for servicing.
MINIMUM CLEARANCES
Figure 2
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.
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).
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 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.
WARNING
IMPORTANT-The flow of combustion and ventilating air must not be obstructed.
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SECTION V: VENTING
WARNING
The direct vent system must be properly installed. Failure to properly install the direct vent system could
result in property damage, personal injury, or death.
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 the vent terminals provided or factory authorized for venting this water heater.
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.
NOTICE
Single Wall Polypropylene venting systems 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.
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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
PVC and CPVC Primer (ASTM F-656)
PVC and CPVC Cement (ASTM D-2564)
ABS Primer and Cement (ASTM D-
2235)
For installations in CANADA
IPEX ULC S636 approved PVC Primer
and Cement for flue gas venting rated
Class II, 65°C
This water heater is a Powered Direct Vent Gas Water Heater where all air for combustion is obtained from the outside
atmosphere and all flue gases are discharged to the outside atmosphere. The venting system consists of separate
combustion air intake and flue exhaust pipes. Venting may be run horizontally through an outside wall or vertically
through a roof through 3” (7.6 cm) or 4” (10.2 cm) diameter pipe for models with input ratings under 200,000 Btu/hr.
Models with input ratings over 200,000 Btu/hr. (check the model nameplate) must use 4” (10.2 cm) diameter pipe only.
The water heater is supplied with a screened intake and exhaust 90° elbow referred to as the exhaust vent or combustion
air intake terminal (see figure 5). Consult the venting table in this section for the maximum venting distances with 3” (7.6
cm) and 4” (10.2 cm) pipe.
Note: The combustion air intake must be piped to the outdoors as outlined in the following instructions in order
for this appliance to be a direct vent water heater.
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Figure 3.
Direct Vent Terminal Clearances
Canadian Installations1
US Installations2
A=
B=
C=
D=
E=
F=
G=
Clearance above grade, veranda, porch, deck or balcony
Clearance to widow or door that may be opened
Clearance to permanently closed widow
12 inches (30 cm)
12 inches (30 cm)
36 inches (91 cm)
12 inches (30 cm)
*b
*b
Vertical clearance to ventilated soffit located above the terminal within a
horizontal distance of 2 feet (61 cm) from the center line of the terminal
12 inches (30 cm) *a
12 inches (30 cm) *a
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
12 inches (30 cm) *a
12 inches (30 cm) *a
*b
*b
*b
*b
3 feet (91 cm) within a
height 15 feet (4.6 m)
above the meter/regulator
assembly
Clearance to each side of center line extended above meter/regulator
assembly
H=
*b
I=
J=
Clearance to service regulator vent outlet or oil tank vent
36 inches (91 cm)
36 inches (91 cm)
6 feet (1.83 m)
*b
Clearance to non-mechanical air supply inlet to building or the combustion air
inlet to any other appliance
12 inches (30 cm)
3 feet (91 cm) above if
within 10 feet horizontally
K=
L=
M=
Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on public
property
7 feet (2.13 m)†
12 inches (30 cm) ‡
*b
Clearance under a veranda, porch, deck, or balcony
12 inches (30 cm) ‡
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 above expected snowfall level to prevent blockage of vent
termination.
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.
Note: Provide protection of the building materials from degradation by flue gases from the exhaust vent terminal.
Horizontal And Vertical Direct Vent Lengths for 199,999 and 150,000 Btu/hr. Input Models
Reference the Venting Component Tables listed in the Installation (Direct Vent System Installation) for the maximum vent
lengths using 3” (7.6 cm) diameter piping. If longer venting distances are required than shown for 3” (7.6 cm) diameter
pipe, then 4” (10.2 cm) diameter pipe may be used. The distances shown in the tables are for each separate pipe (air
intake and exhaust vent).
Do not exceed the maximum allowed exhaust vent or combustion air pipe distances for the number of elbows
listed. Refer to the venting distances listed in tables 1-4 in this installation and operating instruction manual.
Note: The supplied exhaust vent and combustion air intake terminals may be used to vent through outside walls
of any thickness as long as the maximum allowed venting distances are not exceeded.
Maximum Venting Distances
(Horizontal, Vertical, or Combined for models under 200,000 Btu/hr. input ratings only)
TABLE 1 – EXHAUST VENT AND COMBUSTION AIR INTAKE PIPE LENGTHS FOR 3” (7.6 cm) PIPE
Number of 90° Elbows (Excluding vent terminals)
Maximum distance of straight pipe (excluding
vent terminal) to exterior wall or roof.
40 ft. (12.19 m)
1
2
3
4
35 ft. (10.67 m)
30 ft. (9.14 m)
25 ft. (7.62 m)
TABLE 2 – EXHAUST VENT AND COMBUSTION AIR INTAKE PIPE LENGTHS FOR 4” (10.2 cm) PIPE
(For distances longer than 3” (7.6 cm) PIPE)
Number of 90° Elbows (Excluding vent terminals)
Maximum distance of straight pipe (excluding
vent terminal) to exterior wall or roof.
55 ft. (16.8 m)
1
2
3
4
50 ft. (15.2 m)
45 ft. (13.7 m)
40 ft. (12.2 m)
Note: Each 90° elbow reduces the maximum venting distance by 5 ft. (1.52 m). Two 45° elbows are equal to one
90° elbow. Do not use 4” (10.2 cm) diameter pipe for venting distances less than 40 ft. (12.19 m) (with 1 elbow).
Use 3” (7.6 cm) pipe for venting distances of 40ft. (12.19 m) or less.
The total combined distances of vertical and horizontal pipe with equivalent elbow lengths cannot exceed the
maximum distance of straight pipe listed in the tables 1-4.
NOTICE
IMPORTANT - Do not exceed the venting distances or the number of elbows listed. Exceeding the maximum
venting distances may cause the water heater to malfunction or cause an unsafe condition.
The exhaust vent adaptor and gasket with mounting bolts are located inside the cardboard carton with the vent
terminal. The exhaust vent adaptor and gasket must be installed on the blower outlet flange before attempting to
connect the 3” (7.6 cm) diameter vent pipe to the water heater.
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Direct Vent System Installation (199,999 and 150,000 Btu/hr. input models)
WARNING
The direct vent system must be properly installed. Failure to properly install the direct vent system could result in
property damage, personal injury or death.
The water heater requires its own separate venting system. Do not connect the exhaust vent into an existing
vent pipe or chimney.
CAUTION
Do not install any damaged direct vent system components. Contact the manufacturer of the water heater for
replacement parts. Use only the vent terminals provided or factory authorized for venting this water heater.
The flow of combustion air must not be restricted. Keep the direct vent terminal openings clear of objects,
shrubs, snow and debris.
This water heater is a power direct vent appliance and is designed to vent both its products of combustion and provide the
combustion air supply through 3” (7.6 cm) or 4” (10.2 cm) diameter pipe to the outdoors. This water heater may be
vented either through the wall or vertically through the roof. The blower outlet adaptor provided in the vent kit carton and
combustion air inlet connection are designed to fit 3” (7.6 cm) diameter pipe. Remove the exhaust vent adaptor and
gasket from the vent kit carton. Line up the gasket screw clearance holes with the vent adaptor flange and place on top
of the blower outlet flange. Assemble the adaptor with the gasket to the blower outlet using the four (4) nuts, bolts, and
washers provided in the kit.
If 4” (10.2 cm) diameter pipe is used, a bell reducer must be used at the blower outlet and air intake connections. Seal
the joint between the pipe and the blower outlet collar (See figure 4). Table 1 lists the maximum vent lengths for this
water heater using 3” (7.6 cm) diameter pipe. If possible, locate the water heater so that the venting length and number of
elbows are kept to the minimum distance necessary to reach the outside. Use the 3” (7.6 cm) vent and intake air
terminals supplied with the water heater to terminate on the outside of the building. When using 4” (10.2 cm) diameter
pipe, optional 4” (10.2 cm) diameter vent terminals must be used and are available from your dealer. Refer to the venting
illustrations on the following pages. Make sure the exhaust vent pipe terminal rear edge is at least 6” (15.2 cm) away
from the edge of the wall (see figure 5).
Figure 4
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CAUTION
IMPORTANT - 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.
Through the Wall Venting:
Cut two 3 1/2” (8.9 cm) diameter holes (for 3” (7.6 cm) diameter pipe) or 4 1/2” (11.4 cm) diameter holes (for 4” (10.2 cm)
diameter pipe) in the wall with the centerline hole distances at least 6” (15.2 cm) apart, but not more than 24” (61 cm)
apart in the location where the exhaust vent and air intake terminals will exit the outside wall. Use the proper cement to
secure the 90° exhaust vent and air intake terminals provided with the water heater to the pipes. The distance between
the back edge of the 90° exhaust vent terminal and the exterior wall (see Figure 5) must be 5 inches (12.7 cm) more for
the exhaust vent terminal than the air intake terminal. Use the proper cement and assembly procedures to secure the
vent connector joints between the terminal and the blower outlet. Provide support brackets for every 3 feet (.91 m) of
horizontal vent.
Figure 5
Through the Roof Venting: (Vertical Venting)
Cut the necessary holes through the roof and ceiling and install the exhaust vent and air intake pipes as shown in Figure
6. 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 Propane or Natural gas Installation Code.
All vertical exhaust vent runs or horizontal runs more than 15 feet in length may accumulate condensate in the exhaust
vent pipe and exhaust blower and will require the installation of a drain tee and condensate trap. A drain tee and
condensate trap are available from your installer or the manufacturer of the water heater and must be installed in the
horizontal exhaust vent as close as practical to the blower vent connection (See Figures 7B and 7C). When using the
condensate tee, the exhaust vent piping must slope with a ¼” (6.35 mm) per foot pitch toward the condensate tee. For
short horizontal runs (less than 15 feet (4.57 m)) without the condensate tee, slope the exhaust vent piping toward the
outside vent terminal so that any condensate will drain out the vent terminal (see figure 7A). Venting arrangements
required for low ground clearance (figure 8) will require a condensate tee with the pipe sloped toward the tee.
Connect 3/8” (15.9 mm) tubing from the barbed fitting on the condensate tee and form a loop using wire ties or tape as
shown in figures 7B and 7C before running to a drain or condensate pump. The loop forms a drain trap so that flue gases
do not escape into the room.
CAUTION
A drain loop must be installed in the drain tubing to serve as a condensate trap to prevent flue gases from
escaping into the room. Refer to figures 7B, 7C, and the instructions discussing the condensate drain tee
and trap under the vertical venting section.
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Figure 6
Figure 7A
Figure 7B
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Figure 7C
Through the Wall Venting With Low Ground Clearance:
When venting cannot exit through the wall at a height greater than or equal to 12” (30.5 cm) (and above expected snow
level) from the ground, then the installation must be modified as shown below (see Figure 8). Refer to Tables 3 or 4 for
maximum venting lengths using 3” (7.6 cm) or 4” (10.2 cm) diameter pipe.
Figure 8
TABLE 3
3” (7.6 cm) EXHAUST VENT OR COMBUSTION AIR INTAKE PIPE LENGTHS FROM INSIDE WALL
FOR LOW GROUND CLEARANCE INSTALLATIONS
Termination
# of Elbows
Maximum Length
30 ft (9.1 m)
1
2
3
4
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
25 ft (7.6 m)
20 ft (6.1 m)
15 ft (4.6 m)
TABLE 4
4” (10.2 cm) EXHAUST VENT OR COMBUSTION AIR INTAKE PIPE LENGTHS FROM INSIDE WALL
FOR LOW GROUND CLEARANCE INSTALLATIONS
Termination
# of Elbows
Maximum Length
45 ft (13.7 m)
40 ft (12.2 m)
35 ft (10.7 m)
30 ft (9.1 m)
1
2
3
4
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
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Direct Vent System Installation for Models with Input Ratings Over 200,000 Btu/Hr.
Models with input ratings over 200,000 Btu/hr. must use 4” (10.2 cm) diameter pipe. Install the blower adaptor
exhaust vent assembly and gasket supplied in the vent kit carton on the exhaust blower outlet flange as described in the
previous section. Connect the 4” (10.2 cm) pipe to the 4” (10.2 cm) reducers attached to the combustion air intake pipe
and blower exhaust outlet. The supplied 4” (10.2 cm) exhaust vent and combustion air intake terminals must also be
used. Follow the venting system installation instructions for installing 4” (10.2 cm) diameter pipe detailed on pages 14-17
and figures 4-8 and follow the venting tables 5 and 6 for the maximum venting distances.
Maximum Venting Distances (Horizontal, Vertical, or Combined)
TABLE 5
EXHAUST VENT OR COMBUSTION AIR INTAKE PIPE LENGTHS FOR 4” (10.2 cm) PIPE
Maximum distance of straight pipe (excluding
vent or air intake terminal) to exterior wall or
Number of 90° Elbows (Excluding vent
terminals)
roof.
1
2
3
4
55 ft. (16.8 m)
50 ft. (15.2 m)
45 ft. (13.7 m)
40 ft. (12.2 m)
TABLE 6
4” (10.2 cm) EXHAUST VENT OR COMBUSTION AIR INTAKE PIPE LENGTHS FROM INSIDE
WALL FOR LOW GROUND CLEARANCE INSTALLATIONS
Terminating
# of Elbows
Maximum Length
45 ft (13.7 m)
40 ft (12.2 m)
35 ft (10.7 m)
30 ft (9.1 m)
1
2
3
4
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
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SECTION VI: WATER CONNECTIONS
NOTE: 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. After the pressure has been relieved, close the
faucet. The COLD water inlet and HOT water outlet are identified on the top and front of the water heater. Make sure the
diptube is in place before making the cold water connection. 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.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples on top 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.
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.
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.
NOTICE
If this water heater is installed in a closed water supply system, such as the one having a back-flow preventer in the
cold water supply, provisions must be made to control thermal expansion. DO NOT operate this water heater in a
closed system without provisions for controlling thermal expansion. Warranties do not cover damages from thermal
expansions such as pressure bulges and/or deformities. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
After installation of the water lines, open the main water supply valve and fill the water heater. While the water heater is
filling, open several hot water faucets to allow air to escape from the water system. When a steady stream of water flows
through the faucets, close them and check all water connections for possible leaks. NEVER OPERATE THE WATER
HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER.
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WARNING
Keep clear of 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, ANS Z21.22 and the Standard CAN1-4.4 Temperature, Pressure, Temperature and
Pressure Relief Valves and Vacuum Relief Valves. The combination temperature and pressure relief valve must be
marked with a maximum set pressure not to exceed the maximum working pressure of the water heater. The
combination temperature and pressure relief valve must also have an hourly rated temperature steam BTU
discharge capacity not less than the hourly rating of the water heater.
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 a 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 six (6) inches (15.2 cm) above, or any distance below the structural floor and cannot contact any live electrical
part. The discharge line is to be installed to allow for complete drainage of both the combination temperature and
pressure relief valve and the discharge line. The discharge opening must not be subjected to blockage or freezing.
DO NOT thread, plug or cap the discharge line. It is recommended that a minimum clearance of four (4) inches
(10.2 cm) be provided on the side of the water heater for servicing and maintenance of the combination temperature
and pressure relief valve.
Do not place a valve between the combination temperature and pressure relief valve and the tank.
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. By setting the thermostat on this water heater to
obtain the increased temperature water required by
these appliances, you may create the potential for
scald injury. To protect against injury, you should
install an ASSE approved mixing valve in the water
system. This valve will reduce point of discharge
temperature by mixing cold and hot water in branch
supply lines. Such valves are available from the
manufacturer of this water heater or a local plumbing
supplier. Please consult with a plumbing professional. For information regarding space-heating water connections and
plumbing arrangements, refer to the section, “Installation Instructions for Potable Water and Space Heating” in this
Installation and Operating Instruction Manual.
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
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SECTION VII: GAS CONNECTIONS
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).
The minimum permissible gas supply pressure for the purpose of input adjustment is one (1.0) inch (0.25 kPa) water
column above the operating manifold pressure. See the rating plate and gas valve for the manifold pressure and gas
type. The maximum permissible gas supply pressure is fourteen (14.0) inches (3.5 kPa) water column for natural gas and
liquefied petroleum gases/propane gas.
1. Connect this water heater only to the type of gas (Natural or Propane 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 a minimum length of three (3) inches
(7.6 cm) drip leg (sediment trap) installed as close to the water heater’s gas valve as possible. A ground joint union
must be installed as close to the water heater as possible in the gas supply line feeding the water heater 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. Avoid excessive torque when tightening the gas supply line to the gas valve.
Excessive torque may result in cracking of the gas valve housing and could create a gas leak. The suggested
maximum torque is 31.5 ft. lbs. (4.4 kg-m).
WARNING
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.
2. 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!
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 1/2 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 1/2 psi (3.5 kPa). The supply line must be capped when not
connected to the water heater.
3. While checking for leaks care must be taken to prevent solution from contacting the electrical connections at the
control. If electrical connections at the control become wet, they must be thoroughly dried before attempting to
operate the water heater.
WARNING
Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field
involved. Plumbing, air supply, venting, gas supply and electrical work are required.
Light the unit in accordance with the 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
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SECTION IX: 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 115 volt, 60
Hz, AC power supply. The water heater should 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.
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 (to the right)
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TYPICAL INSTALLATION
Notes: The heat trap shown above is not part of the water heater, only a piping suggestion to reduce the standby heat
loss. The drain pan may be purchased from your water heater supplier.
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 SHALL 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.
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Lighting And Shutdown Instructions
Temperature down
CAUTION
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 including gas controls, which has
been under water.
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SECTION X: OPERATING INSTRUCTIONS
TEMPERATURE ADJUSTMENT
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
DANGER
Hotter water increases the risk of scald injury. Scalding may occur within five (5) seconds at a temperature setting
of 140F (60C). To protect against hot water injury, install an ASSE approved mixing valve in the water system.
This valve will reduce point of discharge temperature by mixing cold and hot water in branch water lines. A licensed
plumbing professional or local plumbing authority should be consulted.
This water heater is equipped with an energy cut out device to prevent overheating. Should overheating occur or
the gas supply fail to shut off, turn off the manual gas control valve to the appliance and call a qualified service
technician.
CAUTION
This water heater, when set at a lower temperature setting, is not capable of producing hot water of
sufficient temperature for sanitizing purposes.
NOTICE
Whenever the water heater is filled with cold water, condensate will form on the cool tank surface and drops of water
will fall on the hot burner and combustion chamber surfaces producing a “sizzling” noise. Condensation is normal
and does not indicate a leak. It will disappear when the tank becomes heated.
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 the front of the control panel of
the water heater. The water heater thermostat is set at the lowest setpoint of 70F 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.
Condensation does not mean your tank is leaking. Over 40% of reported tank leaks on installation are proven to be
condensation. To avoid unnecessary expense and inconvenience, make sure the tank is leaking before calling a service
person.
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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
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).
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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
Step 3
to take effect immediately
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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 3b
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 and pilot 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 follow Lighting Instructions 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.
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SECTION X: MAINTENANCE
Burner Flame Check
At the time of installation and at periodic intervals (about every 3 months), a visual check of the pilot and burner flames
should be made to determine if they are burning properly. No adjustment to the air shutter should be required for this
heater. The burner flames should be blue with yellow tips. A blue-orange flame is characteristic of operation on liquefied
petroleum (LP) gas. If the burner flame does not appear as described, an air shutter adjustment may be required. The
burner tube flames should light smoothly from the pilot.
NOTICE
IMPORTANT- In the event of an emergency, turn off the gas and electric (if applicable) to the appliance.
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.
Figure 9
WARNING
Do not run out of propane gas. Damage to the water heater may occur.
Note: Actual burner may not appear as shown in Figure 9.
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. 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.
5. To restore operation of the water heater, refer to operating instruction label on the water heater.
TO DRAIN THE WATER HEATER
Should it become necessary to completely drain the water heater, make sure you follow the steps below:
1. Reduce the thermostat to the lowest setting. Depress the control panel rocker switch on the top of the control box to
the “OFF” position. Disconnect power to the water heater.
2. Rotate and partially depress gas control knob clockwise to the “OFF” position.
3. Shut off the gas supply to the water heater.
4. Close the cold water supply shut-off valve.
5. Open the drain valve or valve stem on the water heater by turning the knob counter-clockwise. The drain valve has
threads on the end that will allow the connection of a standard hose coupling.
6. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater.”
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A qualified service technician should perform the following maintenance at the minimum periodic intervals suggested
below. In some installations, the maintenance interval may be more frequent depending on the amount of use and the
operating conditions of the water heater. Regular inspection and maintenance of the water heater will help to insure safe
and reliable operation.
1. Annual checks of the ignition systems, temperature controls and any other water heater controls are necessary to
ensure proper operation. Also, all safety shut-off valves must be checked to verify proper operation and tightness.
2. The entire combustion system must be sealed for this water heater to function properly. Make sure the burner access
panel is kept tightly sealed. The combustion air supply pipe at the rear of the water heater must be tightly sealed to
the dilution air tee and combustion air boot. Replace any damaged parts. The entire venting system and combustion
air supply parts must be inspected at least annually for integrity of all joints.
3. The flow of combustion and ventilation air MUST NOT be restricted. Keep the direct vent terminal openings clear of
objects, shrubs, snow, and debris. Check to make sure the vent terminal is not damaged.
4. At all times keep the water heater area clear and free from combustible materials, gasoline and other flammable
vapors and liquids.
5. Annually conduct a visual check of the pilot and burner flames to determine that they are burning properly. See
“Burner Flame Check” section for an illustration of the proper burner flame pattern.
WARNING
Do not run out of propane gas. Damage to the water heater may occur.
6. At annual intervals check the flue baffles for deterioration and scale or carbon deposits. Clean if necessary and brush
the flue tubes if excessive scale or deposits are found on the baffles. Replace any baffles that have become
excessively warped or deteriorated. Check the flue collector gasket for integrity and replace if necessary. Cleaning
of the flue baffles and flue tubes should be done prior to cleaning the burners, since deposits may fall on the burners
during cleaning or checking the baffles.
7. Annually remove the main burner rack assembly to clean orifices and related parts of any dirt or other foreign
material. Inspect the burner ports for obstructions or debris and clean with a wire brush, vacuum, or use a mild
detergent solution to clean as needed. Inspect the pilot. Carefully clean the electrode and flame sense rod with
emery cloth. The spark electrode (rod closest to the pilot hood) gap should be 1/8” (3.2 mm). NOTE: It is imperative
for proper operation of the water heater that the main burner rack be replaced in the original location.
To remove the burner rack assembly, follow the procedure outlined below:
a) Shut off the gas and electrical supply to the water heater.
b) Remove the pilot tube fittings at the gas valve and combustion box.
c) Disconnect wires to gas valve. Open control box and disconnect pilot spark and flame sense wires.
d) Disconnect the gas pipe union below the gas valve.
e) Remove the three screws securing the gasketed manifold pipe flange on the left side of the combustion box.
f) Remove the burner access panel screws and lower the hinged panel.
g) Carefully remove and push the pilot wire grommet into the combustion box with the pilot wires.
h) Disconnect the pilot tube fitting on the inside bulkhead fitting of the combustion box.
i) Unthread the gas pipe assembly from the manifold inside the combustion box.
j) Remove the screw securing the curved burner shroud on the top center securing the burner assembly to the tank
skirt.
k) Slide out the burner rack assembly.
l) To remove the individual burners from the rack, the burner assembly shroud assembly must be removed from the
burner rack by removing the four (4) screws securing the shroud to the rack. The shroud must be reattached
to the burner rack after reinstalling the burners back in the rack.
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To reinstall the burner rack, reverse the above procedure.
Alternate method for removing the burner rack, when there is at least 20” (50.8 cm) clearance on the left front
side:
a) Shut off the gas and electrical supply to the water heater.
b) Disconnect both pilot tube fittings at the combustion box bulkhead fitting.
c) Disconnect wires to gas valve. Open control box and disconnect pilot spark and flame sense wires.
d) Disconnect the gas pipe union either above or below the gas valve.
e) Remove the three screws securing the gasketed manifold flange on the left side of the combustion box.
f) Remove the burner access panel from the front of the combustion box.
g) Carefully remove and push the pilot wire grommet into the combustion box with the pilot wires.
h) Remove the four screws securing the manifold to the burner rack.
i) Carefully remove the manifold through the left side opening in the combustion box.
j) Remove the screw securing the curved burner shroud on the top center securing the burner assembly to the tank
skirt.
k) Slide out the burner rack assembly.
l) To remove the individual burners from the rack, the burner assembly shroud assembly must be removed from the
burner rack by removing the four (4) screws securing the shroud to the rack. The shroud must be reattached
to the burner rack after reinstalling the burners back in the rack.
To reinstall the burner rack, reverse the above procedure.
8. 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.
WARNING
When lifting lever of the combination temperature and pressure relief valve, hot water will be released under
pressure. Be careful that any released water does not result in bodily injury or property damage.
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.
9. Monthly drain off a gallon of water to remove silt and sediment.
WARNING
THIS WATER MAY BE HOT!
10. If the combination temperature and pressure relief valve on the appliance 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.
11. 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: 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, replace the cleanout tank cover and jacket cover, and refill with water. Refer to the section, “General
Operation” in this Installation and Operating Instruction manual for the procedures for filling and draining the water
heater.
12. Four sacrificial anode rods have been installed in the tank head to extend tank life. The anode rods should be
inspected annually 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 rod. 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. Contact the plumbing professional who installed the water heater or the manufacturer
listed on the rating plate for anode replacement information.
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13. The induced draft blower motor used in this model series has sealed bearings and does not have provisions for oiling
the bearings.
14. The vent system must be inspected at least once a year to ensure against leakage of exhaust products.
CAUTION
FOR YOUR SAFETY, DO NOT ATTEMPT REPAIR OF COMBINATION GAS CONTROL, BURNERS OR GAS
PIPING. REFER REPAIRS TO A QUALIFIED SERVICE TECHNICIAN.
Contact your supplier, plumbing professional or contact the company at the address given on the rating plate of the water
heater for replacement parts.
Provide the part name as well as the model and serial number(s) of the water heater(s) when ordering parts.
READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT PARTS AND THE WATER
HEATER ARE WARRANTED.
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; 6,395,280; 7,007,748
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
Complete the following information and retain for future reference:
Model No: ________________________________________________________________________
Serial No: ________________________________________________________________________
Service Phone
Days:
Nights: ___________________________________________
Address: _________________________________________________________________________
Supplier: _________________________________________________________________________
Supplier Phone No: ________________________________________________________________
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SECTION XI: DIAGNOSTIC AND TROUBLESHOOTING GUIDE
DIAGNOSTIC GUIDE FOR HONEYWELL INTEGRATED CONTROL SYSTEM
SEQUENCE OF OPERATION FOR PDV AND INDUCED DRAFT MODELS
1. When the tank temperature drops below the temperature setpoint on the display, the control sends power to the
induced draft blower to start the ignition sequence.
2. When blower reaches the full operating speed, the pressure switch closes, completing the 24 volt circuit to the
safety circuit of the control. If the exhaust vent becomes blocked or the blower fails, the pressure switch will
open, the gas valves close, and the blower stops after a 5 second post-purge. The blower will restart and
continue to operate in the lockout condition until the blockage is removed or the venting problem is corrected.
Error code 29 will appear on the water heater display.
3. The control will continue to operate the blower for 15 seconds to “prepurge” any flue products remaining before
starting the ignition sequence.
4. After the prepurge period, the control sends 24 volt power to the pilot valve “PV” terminals on the gas valve
allowing pilot gas to flow to the pilot. The control also sends high voltage through the pilot electrode to spark to
the pilot hood and ignite the pilot gas. If the pilot does not ignite within 90 seconds, the pilot valve is denergized
and the sparking stops for 75 seconds. The control will attempt to ignite the pilot two more times. If the pilot does
not light on the 3rd attempt, the control will go into “soft lockout” for 1 hour and then will repeat the 3 ignition
attempts. The blower is off during the “soft lockout” period.
5. When the pilot is lit, the flame is sensed by the flame sense rod. The flame sense signal received by the control
board causes the sparking to stop and the main gas valve to open. The main burners ignite from the pilot flame.
The pilot is continually monitored by the flame sensing circuit. If for any reason, the pilot flame is not sensed by
the flame sensing circuit, the gas valves close. After a 75 second delay, the pilot valve opens and the pilot
electrode sparks to relight the pilot. The same sequence will occur in the event of a power supply or gas supply
interruption.
6. The main burners continue to operate until the water temperature in the tank increases past the control setpoint,
which will cause the gas valve to close. The blower stops operating 5 seconds after the gas valve closes. The
water heater remains in the standby mode until the temperature drops below the setpoint and initiates another
heating cycle.
7. If for some reason, the tank temperature should reach or exceed 200˚F, 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 Instructions 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
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
Water Heater Display
Max
Setpoint
°F
idle
Operational
Status
SELECT
SET
2a. Water Temperature Average (Displays average if there are two sensors – sensor temperature displayed if single
sensor is used).
Water Temp
°F
idle
Operational
Status
SELECT
SET
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2b. Water Temperature - Upper Sensor (Displays if there is an upper sensor – some models)
°F
idle
Operational
Status
Upper Sensor
SELECT
SET
2c. Water Temperature - Lower Sensor (Displays if there are two sensors)
°F
idle
Operational
Status
Lower Sensor
SELECT
SET
3. Flame Current of Pilot Flame Sensor (Displays only in the Heating Cycle)
µA
Heating
Flame Current
Operational
Status
SELECT
SET
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4. Setpoint (Display/Change)
setpoint
°F
idle
Operational
Status
SELECT
SET
5. ˚F/˚C (Display/Change)
°F °F/C°
idle
Operational
Status
SELECT
SET
6. Differential (Display only – shows the differential of the thermostat)
Differential
°F
idle
Operational
Status
SELECT
SET
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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
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
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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
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.
"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
°F
Setpoint
idle
Operational
Status
SELECT
SET
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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
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. For water heaters using two temperature sensors in the tank, this will be the average reading
between the two sensors. For water heaters using a single sensor, this is the reading for the sensor.
Water
Temp
°F
idle
Operational
Status
SELECT
SET
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Step 2: For water heaters using two temperature sensors, pressing the “Select” button again displays the Upper Sensor
temperature reading. “Upper Sensor” will be displayed in the lower right side of the status window of the water heater
display.
°F
idle
Operational
Status
Upper Sensor
SELECT
SET
Step 3: For water heaters using two temperature sensors, pressing the “Select” button again displays the Lower Sensor
temperature reading. “Lower Sensor” will be displayed in the lower left side of the status window of the water heater
display.
°F
idle
Operational
Status
Lower Sensor
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).
Flame
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
Step 3: To raise the temperature setpoint, press the “Temperature Up” button until the desired temperature is shown on
the water heater display.
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”.
"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.
50
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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
53
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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 HONEYWELL INTEGRATED
CONTROLS
(PDV AND INDUCED DRAFT MODEL SERIES)
Error
Code
Definition of Code
Cause of Problem and Actions Taken to Correct
Determine flame sense current in the Service Mode with the water heater
operating. If less than 1.0 microamps, check pilot flame sense rod and wire.
Clean flame sense rod with emery cloth. If problem is not solved, replace pilot.
The pressure switch contacts did not return back to the normally open position at
the end of the last heating cycle. The control checks to make sure the pressure
Low Flame Sense
Current
4
Pressure Switch
2
Failed to Open (Stuck switch is in the normally open position before allowing the blower to start the
Closed)
ignition sequence. Check to make sure the pressure switch tubing is not blocked.
If the pressure switch tubing is clear, replace the pressure switch.
The pressure switch contacts did not close after the blower was energized. Check
to make sure the blower is energized at the beginning of the heating cycle. If the
blower did not start, check to make sure there is power to the motor. Replace
blower or control board if defective. Check to make sure the venting system is not
blocked. 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
Flame Sensed Out of
Normal Sequence
Check to make sure gas valve has closed. No voltage should be present at the
6
(Before Opening Gas gas valve before or after ignition cycle. Make sure wire positions on the wire
Valve or After Closing harness are correct. If gas valve is stuck open, replace.
Gas Valve)
54
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Error
Code
Definition of Code
Cause of Problem and Actions Taken to Correct
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.
Upper Sensor
Readings Faulty
Lower Sensor
Readings Faulty
Resistance of upper sensor out of operating range. Check continuity of wire
harness to upper sensor, and if O.K., replace upper sensor.
Resistance of lower sensor out of operating range. Check continuity of wire
harness to lower sensor, and if O.K., replace lower sensor.
31
32
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 pilot shield or
other metal parts. Replace pilot if flame sense wire is damaged or flame rod is
bent. Make sure pilot shield is not touching the pilot flame sensor.
Flame Rod Shorted
to Ground
57
58
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.
Line Voltage Too Low Check line voltage to the water heater. Determine cause of low or high voltage.
59
61
or High
Call an electrician or your utility. The water heater should be on a separate line.
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
Pilot is either not lighting or not staying lit during ignition cycle. Check inlet gas
pressure for minimum pressure on rating label. Is pilot electrode sparking? Check
gas valve wire harness for broken wires or shorts. If 24 volts is present between
Maximum Number of PV and PV/MV terminals at the gas valve, replace gas valve. Check for voltage
62
Retries Detected
output to the yellow and red gas valve wires on the control board pins. If during
the ignition trial period, there is no voltage present at the control board pin terminal
for the red and yellow wires leading to the gas valve, then replace the control
board. Replace pilot if wires are damaged or electrode is damaged.
Pilot flame is lost during run cycle, then restablished on ignition cycle. Check inlet
gas pressure. Is gas pressure dropping below the minimum operating pressure on
Maximum Number of the rating label after the main gas valve opens? Is the gas pipe size to the water
63
Ignition Recycles
Detected
heater adequate? Check the pilot shield position and condition of the burners.
Clean or replace as needed. Check the pilot flame and observe the microamp
output on the run cycle. Check the pilot tubing to the pilot and replace if crimped
or damaged. Replace pilot if wires, flame sensor, or electrode is damaged.
Replace control board.
Water temperature in tank has exceeded 200˚F. Check lower sensor. Make sure
sensor is fully inserted into the well (clip on sensor wire secures sensor in place).
Check lower and upper (where used) sensor readings. If not within specifications,
replace sensor. If sensor and wire harnesses check O.K., replace control board.
64
65
Electronics Failure
High Water
Temperature
(Over 200˚F)
55
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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 upper sensor or lower sensor assembly, compare the resistance of the sensor terminals (blue leads for
upper sensor, yellow and black lead for lower sensor) 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. 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.
In Degrees °F
°F
40
50
60
70
0
1
2
3
4
5
6
7
8
9
26109
19906
15314
11884
9299
7333
5827
4663
3758
3048
2488
2043
1688
1402
1170
982
25400
19383
14925
11592
9078
7165
5697
4562
3679
2986
2439
2004
1656
1376
1150
965
24712
18876
14548
11308
8862
7000
5570
4464
3602
2925
2391
1966
1625
1351
1129
949
24045
18383
14180
11032
8653
6839
5446
4368
3527
2866
2344
1928
1595
1327
1110
933
23399
17905
13823
10763
8449
6683
5326
4274
3453
2808
2298
1891
1566
1303
1090
917
22771
17440
13477
10502
8250
6531
5208
4183
3382
2752
2253
1856
1567
1280
1071
901
22163
16990
13140
10248
8057
6383
5094
4094
3312
3697
2209
1820
1509
1257
1053
886
21573
16553
12812
10000
7869
6238
4982
4006
3244
3643
2166
1786
1481
1235
1035
871
21000
16128
12494
9760
7685
6098
4873
3922
3177
2590
2124
1753
1454
1213
1017
857
20445
15715
12185
9526
7507
5961
4767
3839
3112
2538
2083
1720
1427
1191
999
80
90
100
110
120
130
140
150
160
170
180
190
200
842
713
828
814
801
788
775
762
749
737
725
In Degrees °C
4
°C
0
0
1
2
3
5
6
7
8
9
32648
19898
12492
8057
5327
3602
2488
1752
1256
916
31026
18968
11942
7722
5117
3468
2400
1693
1216
888
29495
18088
11419
7403
4917
3340
2316
1637
1177
861
28049
17253
10922
7099
4726
3217
2235
1582
1140
835
26682
16461
10450
6808
4543
3099
2157
1530
1105
810
25389
15710
10000
8532
4368
2986
2083
1480
1070
786
24166
14998
9572
6268
4201
2878
2011
1432
1037
763
23010
14322
9165
6016
4042
2774
1942
1385
1005
741
21915
13680
8778
5775
3889
2675
1876
1340
974
20879
13071
8409
5546
3742
2579
1813
1297
944
10
20
30
40
50
60
70
80
90
719
698
56
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SECTION XII: PARTS LIST
PART NAME AND DESCRIPTION
1. Induced Draft Blower Assembly
2. Diptube
3. Pressure Switch
4. T&P Valve
REPLACEMENT PARTS LIST FOR POWERED DIRECT VENT MODELS
Contact your supplier, plumbing professional or the company listed on the rating
plate of the water heater for replacement parts.
5. Flue Baffle
6. Cleanout Access (Jacket) Cover
7. Drain Valve
8a. Cleanout Cover
8b. Cleanout Cover O-Ring (under cover – not
shown)
Provide the part name as well as the model and serial number(s) of the water
heater(s) when ordering parts. When applicable, the following information must
be provided: type of gas, voltage and amperage, item number (from the following
list) and description (from the following list).
9. Main Burner Tubes
10. Pilot Assembly
11. Pilot Supply Tube (Control Side)
12. Pilot Supply Tube (Burner Side)
13. Main Burner Manifold
14. Gas Valve
15. Main Burner Orifice
16. Transformer
17. Ignition Module
18. Anode Rods (4) (Not shown–top of tank)
19. On-Off Switch
20. Integrated Control Board
21. Utility Cover
22. Outlet Nipple
23. Temperature Display
24. Power Cord
25. Secondary T’former Wire Assy
26. Primary T’former Wire Assy
27. Lower Sensor Retainer Clip
28. Lower Thermostat Well
29. Lower Sensor
30. Pressure Switch Tubing
(Not Shown–2 pcs)
31. Flue Collector Head
32. Jacket Head
33. Pilot Shield
34. Pressure Switch Cover
35. Collector Nipple Gaskets (2)
36. Flue Collector
37. Flue Collector Gasket (Top Edge)
38. Burner Access Cover Gasket
39. Sight Glass Gasket
40. Sight Glass
41. Tank (Not shown)
42. Manifold Flange
43. Burner Access Cover
44. Blower Outlet Connection
45. Blower Outlet Flange Gasket
46. Collector to Blower Transition
47. Blower Mounting Flange w/ Pressure Tap
48. Front Combustion Box Assy
49. Combustion Air Tube
50. Combustion Air Inlet Boot
51. Combustion Air Orifice
(Inside Dilution Air Tee)
52. Gas Valve Wire Harness
53. Vent Safety Switch (Not Shown–Located
Below Blower Outlet Flange)
54. Dilution Air Tee
55. Dilution Air Inlet
56. Dilution Air Pressure Tap
57. Escutcheon–Rear Boot
58. Blower Escutcheon
59. Blower Wiring Harness
60. Pressure Switch Harness
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VENT KIT COMPONENTS AND OPTIONAL CONDENSATE TEE
150,00 AND 199,999 BTU/HR. MODELS: 3” VENT KIT
MODELS OVER 200,000 BTU/HR.: 4” VENT KIT
COMMON: 3” AND 4” VENT KIT
3” OR 4” EXHAUST TERMINAL
3” OR 4” INTAKE TERMINAL
58
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SECTION XIII: INSTALLATION FOR POTABLE WATER AND SPACE HEATING
THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF:
GAS WATER HEATERS SUITABLE FOR WATER (POTABLE) HEATING AND SPACE HEATING
1. All piping components connected to this water heater for space-heating applications must be suitable for use with
potable water. In Massachusetts, space heating piping must not exceed 50 feet.
2. Toxic chemicals, such as those used for boiler treatment, must not be introduced into potable water used for space
heating.
3. This water heater must not be connected to an existing heating system or component(s) previously used with a non-
potable water heating appliance.
4. When the system requires water for space heating at temperatures higher than required for other uses, such as an
ASSE approved mixing valve must be installed to temper the water for those uses in order to reduce the scald hazard
potential.
Please refer to the illustrations below and on the following pages for suggested piping arrangements.
Suggested Piping Arrangement For Side Connections
Suggested Piping Arrangement For Top and Side Connections
Suggested Piping Arrangement For Top Connections
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SECTION XIV: NOTES
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