!
Warning: This water heater is not
Use & Care Manual
suitable for use in manufactured (mobile) homes!
With Installation Instructions for the Installer
Residential Gas
® Water Heaters
Residential 40, 50, 60 Gallon
The purpose of this manual is twofold: one, to provide the installer with the basic directions
and recommendations for the proper installation and adjustment of the water heater; and two,
for the owner–operator, to explain the features, operation, safety precautions, maintenance
and troubleshooting of the water heater. This manual also includes a parts list.
It is very important that all persons who are expected to install, operate or adjust this
water heater read the instructions carefully so they may understand how to perform
these operations. If you do not understand these instructions or any terms within it, seek
professional assistance.
Any questions regarding the operation, maintenance, service or warranty of this water heater
should be directed to the seller from whom it was purchased. If additional information is
required, refer to the section on “If you need service.”
Do not destroy this manual. Please read carefully and keep in a safe place for future
reference.
V
ACATION
A
B
C
VER
HO
WARM
V
ACATION
A
B
C
VER
HOT
Y
WARM
COOLER
HOTTE
COOLER
HOTTER
Recognize this symbol as an indication of Important Safety Information!
!
California Proposition 65 Warning: This product contains chemicals known to the
State of California to cause cancer, birth defects or other reproductive harm.
!
!
WARNING: If the information in these instructions is not followed exactly,
a fire or explosion may result causing property damage, personal injury or death.
!
FOR YOUR SAFETY!
● If you cannot reach your gas supplier, call
the fire department.
— Do not store or use gasoline or other
flammable vapors or liquids or other
combustible materials in the vicinity of this or
any other appliance. To do so may result in an
explosion or fire.
● Do not return to your home until authorized
by the gas supplier or fire department.
— Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, personal injury, or death. Refer to
this manual. Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
— 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.
S
I
G
N
D
Printed in USA
AP14236 (05/07)
R
T
I
E
I
®
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IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water
heater. It may save you time and money. Pay particular attention to the Safety Instructions. Failure to follow these
warnings could result in serious bodily injury or death. Should you have problems understanding the instructions in
this manual, or have any questions, STOP, and get help from a qualified service technician, or the local gas utility.
NOTICE: This water heater is equipped with a flammable vapor sensor that will automatically shut
down the water heater in the presence of gasoline vapors and some other flammable vapors. If the
flammable vapor sensor shuts down the water heater, contact a qualified service technician. Clear any
hazardous materials and ventilate the area around the water heater. Do not turn off the appliance
or adjust the ON/OFF switch in any way. Do not tamper with the flammable vapor sensor. Do not
submerse the flammable vapor sensor in water. Do not allow the flammable vapor sensor to come into
contact with any substances such as bleach or cleaners. See the “Gas Valve LED Error Code” Section
of this manual for a list of error codes.
DANGER!
INSTALL THE BLOWER ASSEMBLY AND PROPERLY VENT
THE WATER HEATER
Failure to install the blower assembly and properly vent the water heater to the outdoors
as outlined in the Venting Section of the Installation Instructions in this manual can result
in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation
from carbon monoxide, never operate this water heater unless it is properly vented and
has an adequate air supply for proper operation. Be sure to inspect the vent system for
proper installation at initial start-up; and at least annually thereafter. Refer to the Care and
Cleaning section of this manual for more information regarding vent system inspection.
WARNING!
Gasoline, as well as other flammable materials and liquids (which include but are not
limited to adhesives, solvents, paint thinners etc.), and the vapors they produce are
extremely dangerous. DO NOT handle, use or store gasoline or other flammable or
combustible materials anywhere near or in the vicinity of a water heater or any other
appliance. Be sure to read and follow warning label pictured below and other labels on the
water heater, as well as the warnings printed in this manual. Failure to do so can result in
property damage, bodily injury or death.
W A R N I N G
!
FLAMMABLES
Flammable Vapors
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death.
!
Do not store or use gasoline or other flammable vapors and liquids
in the vicinity of this or any other appliance. Storage of or use of gasoline
or other flammable vapors or liquids in the vicinity of this or any other
appliance can result in serious injury or death.
3
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IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
!
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of a water heater’s gas control. Water temperatures above 125°F
can cause severe burns or death from scalding. Be sure to read and follow the warnings
outlined on the label pictured below. This label is also located on the water heater.
Time/Temperature Relationship in Scalds
Water Temperature
Time To Produce a Serious Burn
!
D A N G E R
120°F
More than 5 minutes
11/2 to 2 minutes
125°F
130°F
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 11/2 seconds
About 1 second
135°F
140°F
145°F
150°F
155°F
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide in
determining the proper water temperature for your
home.
HOT
DANGER: Households with small children, disabled,
or elderly persons may require a 120°F or lower gas
control (thermostat) setting to prevent contact with
“HOT” water.
!
Maximum water temperatures occur just after the
burner has shut off. To find water temperature being
delivered, turn on a hot water faucet and place
a thermometer in the water stream and read the
thermometer. (See page 24 and 25 for more details.)
BURN
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
The temperature of the water in the heater can be
regulated by pressing the temperature buttons on the
front of the gas control (thermostat). To comply with
safety regulations the gas control(thermostat) was
set at its lowest setting before the water heater was
shipped from the factory.
Children, disabled and elderly are
at highest risk of being scalded.
The illustration below details the approximate water
temperature for each mark on the Gas Control
(Thermostat) Temperature Dial.
See instruction manual before
setting temperature at water
heater.
VACATION
WARM
A
B
C
Feel water before bathing or
showering.
VERY
HOT
!
DANGER: Hotter
COOLER
HOTTER
water increases the
potential for Hot Water
SCALDS.
Temperature limiting valves are
available, see manual.
WARNING
Notice: Mixing valves are available for reducing point
of use water temperature by mixing hot and cold water
in branch water lines. Contact a licensed plumber or the
local plumbing authority for further information.
Display
Temperature Setting
Burns on Adult Skin
▼ A B C
WARM = approx. 70°F (21°C)
▼ = approx. 120°F (49°C)
A = approx. 130°F (54°C)
B = approx. 140°F (60°C)
C = approx. 150°F (66°C)
--------------------
More than 5 minutes
About 30 seconds
Less than 5 seconds
About 1-1/2 seconds
About 1/2 seconds
● ○ ○ ○ ○ ○
○ ○ ● ○ ○ ○
○ ○ ○ ● ○ ○
○ ○ ○ ○ ● ○
○ ○ ○ ○ ○ ●
○ ○ ○ ○ ○ ●
4
C-Flashing = approx. 160°F (71°C)
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DANGER!
LIqUEFIED PETROLEUM (LP PROPANE OR BUTANE)
AND NATURAL GAS MODELS
LP and Natural gas have an odorant added to aid in detecting a gas leak. Some people
may not physically be able to smell or recognize this odorant. If you are unsure or
unfamiliar with the smell of LP or natural gas, ask the gas supplier. Other conditions,
such as “odorant fade”, which causes the odorant to diminish in intensity, can also hide or
camouflage a gas leak.
● Water heaters utilizing LP gas are
!
DANGER: If a gas leak is present or
different from natural gas models. A
natural gas water heater will not function
safely on LP gas and vice versa.
suspected:
● Do not attempt to find the cause
yourself.
● No attempt should ever be made to
convert the water heater from natural
gas to LP gas. To avoid possible
● Do not try to light any appliance.
● Do not touch any electrical switch.
● Do not use any phone in your building.
equipment damage, personal injury or
fire, do not connect the water heater to a
fuel type not in accordance with the unit
data plate. LP for LP units. Natural gas
for natural gas units. These units are not
certified for any other fuel type.
● Leave the house immediately and make
sure your family and pets leave also.
● Leave the doors open for ventilation
and contact the gas supplier, a qualified
service agency or the fire department.
● LP appliances should not be installed
below grade (for example, in a basement)
if such installation is prohibited by
federal, state and/or local laws, rules,
regulations or customs.
● Stay away from the house (or building)
until the service call has been made, the
leak is corrected and a qualified agency
has determined the area to be safe.
● LP gas must be used with great caution.
It is heavier than air and will collect first
in lower areas making it hard to detect at
nose level.
● Before attempting to light the water
heater, make sure to look and smell for
gas leaks. Use a soapy solution to check
all gas fittings and connections. Bubbling
at a connection indicates a leak that must
be corrected. When smelling to detect a
gas leak, be sure to sniff near the floor
also.
● Gas detectors are recommended in LP
& natural gas applications and their
installation should be in accordance
with the detector manufacturer’s
recommendations and/or local laws,
rules, regulations or customs.
● It is recommended that more than one
method, such as soapy solution, gas
detectors, etc., be used to detect leaks in
gas applications.
5
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IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
WARNING!
For your safety, the information in this manual must be followed to minimize the risk of
fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of
life.
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California Law requires that residential water heaters must be braced, anchored or
strapped to resist falling or horizontal displacement due to earthquake motions. For
residential water heaters up to 52-gallon capacity, a brochure with generic earthquake
bracing instructions can be obtained from: Office of the State Architect, 1102 Q Street,
Suite 5100, Sacramento, CA 95814 or you may call 916-445-8100 or ask a water heater
dealer.
However, applicable local codes shall govern installation. For residential water heaters
of a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable
bracing procedures.
SAFETY PRECAUTIONS
Have the installer show you the location of the gas shut-off valve and how to shut it off
if necessary. Turn off the manual shut-off valve if the water heater has been subjected to
overheating, fire, flood, physical damage or if the gas supply fails to shut off.
● Read this manual entirely before installing
● Do not attempt to repair or replace any part
of your water heater unless it is specifically
recommended in this manual. All other
servicing should be referred to a qualified
technician.
or operating the water heater.
● Use this appliance only for its intended
purpose as described in this Use and Care
Manual.
● Be sure your appliance is properly installed
in accordance with local codes and the
provided installation instructions.
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
6
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Installing the water heater.
This water heater must be installed in accordance with these instructions, local codes, utility company
requirements, and/or in the absence of local codes, use the latest edition of the American National
Standard/National Fuel Gas Code. A copy can be purchased from either the American Gas Association,
400 N. Capitol Street NW, Washington, DC 20001 as ANSI standard Z223.1 or National Fire Protection
Association, 1 Batterymarch Park, Quincy, MA 02269 as booklet NFPA 54.
Location
Combustion Air Inlet
The water heater should not be located
in an area where leakage from the tank
or connections will result in damage
to the area adjacent to the heater or to
lower floors of the structure.
The water heater must be located so it is
not subject to physical damage, for example,
by moving vehicles, area flooding, etc.
Openings
Max.
2.75”
If local codes require the use of a stand
kit to raise the water heater 18” above the
floor, please contact the store where the
water heater was purchased, or any water
heater distributor. These kits must comply
with local codes.
When such areas cannot be avoided it is
recommended that a suitable catch pan,
adequately drained, must be installed
under the water heater.
Flammable
Vapor
Diameter of
Sensor
water heater
plus 2” min.
The water heater must be centered in
the catch pan.
● The water heater should be installed
so as to minimize the length of plastic
vent pipe and the number of vent
connection fittings required. (Refer to
the “INSTALLATION” Section of this
manual.)
The catch pan must not restrict air
flow to the combustion air inlet openings
(perforation openings) located around the
lower perimeter of the water heater.
The auxiliary catch pan
installation MUST conform
to local codes.
Notice: DO NOT allow
the catch pan to obstuct
the flammable vapor
sensor.
● Long hot water lines should be insulated
Catch pan kits are available from the store
where the water heater was purchased, or
any water heater distributor.
to conserve water and energy.
● The water heater and water lines should
be protected from exposure
Make certain the floor underneath the
water heater is strong enough to
sufficiently support the weight of the
water heater once it is filled with water.
to freezing temperatures.
Notice: DO NOT allow
the flammable vapor
sensor to become
submerged in water.
Make sure the catch pan
is properly drained.
● Do not install the water heater in
bathrooms, bedrooms, any occupied
rooms normally kept closed, or in
unprotected outdoor areas.
A gas fired water heater or any other
appliance should not be installed
in a space where liquids which give off
flammable vapors are to be used or stored.
Such liquids include gasoline, LP gas
(butane or propane), paint or adhesives
and their thinners, solvents or removers.
● Minimum clearance from combustible
construction:
Front
Sides
Rear
Top
3”
1”
0”
12”
(7.6 cm) (2.5 cm)
(0 cm)
(30.5 cm)
DO NOT block or obstruct any of the
combustion air inlet openings located
around the perimeter of the water
heater. A minimum of 1” is required
between these combustion air inlet
openings and any obstruction.
If the clearances stated on the
Instruction/Warning Label, located on
the front of the heater differ, install the
water heater according to the clearances
stated on the label.
DO NOT obstruct or block the
Flammable Vapor Sensor.
● If the water heater is installed in an
alcove or closet, the entire floor must
be covered by a wood or metal panel.
A minimum of 24” clearance from the
front and top should be available for
adequate inspection and servicing.
Because of natural air movement in a
room or other enclosed space, flammable
vapors can be carried some distance from
where liquids which give off flammable
vapors are to be used or stored. The open
flame of the water heater’s pilot or main
burner can ignite these vapors and create a
shut down condition of the water heater
which will not allow the water heater
to ignite until examined by a Qualified
Service Technician.
!
WARNING: Combustible
construction refers to
adjacent walls and ceilings
and should not be confused
with combustible or
● The water heater may be installed on
combustible floors, but not directly on
carpeting. If the water heater must be
installed on carpeting, place a metal or
wood panel beneath the water heater,
extending beyond its full width and
flammable products and
materials. Combustible
and/or flammable products
and materials should never
be stored in the vicinity of
this or any gas appliance.
7
depth at least 3” in all directions.
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Installing the water heater.
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating plate of
the water heater to be certain the type of gas supplied corresponds to the water heater
requirements.
Combustion and Ventilation Air
Ventilation (ambient) air temperature
must be 100°F or less. Proper operation
of the water heater requires air for
combustion and ventilation. Provisions
for combustion and ventilation air
must comply with referenced codes and
standards.
The minimum net free area of each opening
must not be less than one square inch
per 1000 Btuh of the total input rating
of all the appliances in the enclosure
(but not less than 100 square inches), if
each opening communicates with other
unconfined areas inside the building.
DO NOT block or obstruct any of the
combustion air inlet openings located
around the perimeter of the water
heater. A minimum of 1” is required
between these combustion air inlet
openings and any obstruction.
Buildings of unusually tight construction
shall have the combustion and ventilation
air supplied from outdoors, or a freely
ventilated attic or crawl space.
If air is supplied from outdoors, directly or
through vertical ducts, there must be two
openings located as specified above and
each must have a minimum net free area
of not less than one square inch per 4000
Btuh of the total input rating of all the
appliances in the enclosure.
NOTICE: If the water heater is
installed in an unconfined space within a
building of conventional frame, masonry
or metal construction, infiltration
air is normally adequate for proper
combustion and ventilation. If the
water heater is installed in a confined
space, provisions for combustion and
ventilation air must be made.
NOTICE: Do not install the
water heater in attics where
the temperature may exceed
100°F. This water heater is
equipped with a temperature
sensing device that will
shut off the water heater
if the maximum allowable
vent pipe temperature is
exceeded.
If horizontal ducts are used to
communicate with the outdoors, each
opening must have a minimum net free
area of not less than one square inch per
2000 Btuh of the total input rating of all
the appliances in the enclosure. If ducts
are used, the minimum dimensions of
rectangular air ducts shall not be less than
3”.
DO NOT obstruct or block the
Flammable Vapor Sensor.
A confined space is one having a volume
of less than 50 cubic feet per 1000 Btuh
of the aggregate input of all appliances
within that space.
NOTICE: If the duct openings which
supply combustion and ventilation air
are to be covered with a protective
screen or grill, the net free area
(openings in the material) of the
covering material must be used in
determining the size of the openings.
Protective screening for the openings
MUST NOT be smaller than 1/4”mesh
to prevent clogging by lint or other
debris.
The air must be supplied through two
permanent openings of equal area. One
is to be located within 12” above the floor
and the other is to be located within 12”
from the ceiling.
Corrosive Atmospheres
The air in beauty shops, dry cleaning
should not be installed near establishments, photo processing
will shorten the life of any gas burning
appliance.
NOTICE: The water heater
an air supply containing
halogenated hydrocarbons.
labs, and storage areas for liquid and
powdered bleaches or swimming pool
chemicals often contain such halogenated
hydrocarbons.
Propellants from common spray cans
or gas leaks from A/C and refrigeration
equipment are highly corrosive after
passing through a flame.
An air supply containing halogenated
hydrocarbons may be safe to breathe,
but when it passes through a gas flame
corrosive elements are released that
The water heater warranty is voided when
failure of the heater is due to operation in
a corrosive atmosphere.
8
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Thermal Expansion
Determine if a check valve exists in the inlet water line. Check with your local water utility
company. It may have been installed in the cold water line as a separate back flow preventer, or
it may be part of a pressure reducing valve, water meter or water softener. A check valve located
in the cold water inlet line can cause what is referred to as a “closed water system”. A cold water
inlet line with no check valve or back flow prevention device is referred to as an “open” water
system.
As water is heated, it expands in volume and creates an increase in the pressure within the water
system. This action is referred to as “thermal expansion”. In an “open” water system, expanding
water which exceeds the capacity of the water heater flows back into the city main where the
pressure is easily dissipated.
A “closed water system”, however, prevents the expanding water from flowing back into the
main supply line, and the result of “thermal expansion” can create a rapid and dangerous
pressure increase in the water heater and system piping. This rapid pressure increase can quickly
reach the safety setting of the relief valve, causing it to operate during each heating cycle. Thermal
expansion, and the resulting rapid, and repeated expansion and contraction of components in the
water heater and piping system can cause premature failure of the relief valve, and possibly the
heater itself. Replacing the relief valve will not correct the problem!
The suggested method of controlling thermal expansion is to install an expansion tank in the cold
water line between the water heater and the check valve (see illustration below). The expansion
tank is designed with an air cushion built in that compresses as the system pressure increases,
thereby relieving the over pressure condition and eliminating the repeated operation of the relief
valve. Other methods of controlling thermal expansion are also available. Contact your installing
contractor, water supplier or plumbing inspector for additional information regarding this subject.
IMPORTANT: Do not apply
heat to the HOT or COLD
water connections. If sweat
connections are used, sweat
tubing to adapter before
fitting adapter to the cold
water connections on heater.
Any heat applied to the cold
water supply fittings will
permanently damage the
dip tube and heat traps.
Water Supply Connections
Refer to the illustration below for suggested typical installation. The installation of unions or
flexible copper connectors is recommended on the hot and cold water connections so that the
water heater may be easily disconnected for servicing if necessary. The HOT and COLD water
connections are clearly marked and are 3/4” NPT on all models. Install a shut-off valve in the cold
water line near the water heater.
Typical Installation
1/4” per foot maximum slope up or
down for horizontal venting.
Vent connector
Union
Heat trap
6” minimum
Blower assembly
Anode
Hot water outlet to
NOTICE: The National
Fuel Gas Code (NFGC)
mandates a manual
fixtures
Union
Water Heater Jacket
Temperature and
pressure relief valve
gas shut-off valve: See
(NFGC) for complete
instructions. Local codes
or plumbing authority
requirements may vary
from the instructions or
diagrams provided and
take precedent over these
instructions.
Manual gas shut-off
To gas supply
Heat trap
6” minimum
Shut-off
valve
To cold water
supply
Ground joint union
Shut-off valve
Sediment trap
Cap
Thermal expansion
tank (if required)
Relief valve discharge
line to suitable open
drain.
Drain
valve
Va cuum Relief Valve
(Not Supplied)
Thermostatic gas valve
Jacket door
Combustion Air
Inlet Openings
Flammable Vapor Sensor
Auxiliary catch pan
6” Air gap
If required, install per local codes
and valve manufacturer’s
instructions.
Drain Pan Pipe
to suitable drain.
9
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Installing the water heater.
A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves
and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must
remain in the opening provided and marked for the purpose on the water heater. No valve of any type
should be installed between the relief valve and the tank. Local codes shall govern the installation of
relief valves.
Relief Valve
The pressure rating of the relief valve
must not exceed 150 PSI, the maximum
working pressure of the water heater as
marked on the rating plate.
The discharge line must be no smaller
than the outlet of the valve and must
pitch downward from the valve to allow
complete drainage (by gravity) of the
relief valve and discharge line.
The Btuh rating of the relief valve must
equal or exceed the Btuh input of the
water heater as marked on its rating plate.
The end of the discharge line should not
be threaded or concealed and should be
protected from freezing. No valve of
any type, restriction, or reducer coupling
should be installed in the discharge line.
Position the outlet of the relief valve
above a suitable open drain to eliminate
potential water damage. Piping used
should be of a type approved for hot water
distribution.
To Fill the Water Heater
Make certain that the drain valve is
closed, then open the shut-off valve in the
cold water supply line.
WARNING: The tank
must be full of water before
heater is turned on. The
water heater warranty does
not cover damage or failure
resulting from operation
with an empty or partially
empty tank.
Do not allow the flammable vapor sensor
to become submerged in water.
Open each hot water faucet slowly to
allow the air to vent from the water
heater and piping.
A steady flow of water from the hot water
faucet(s) indicates a full water heater.
Condensation
Condensation can form on the tank
when it is first filled with water.
Condensation might also occur with a
heavy water draw and very cold inlet
water temperatures.
NOTICE: Additional information on this
under Rheem Water Heating, "Support",
scroll down to the Technical Service
Section and to Bulletins 1400 Series
Section and choose Bulletin #1402..
Drops of water falling on the burner can
produce a sizzling or pinging sound.
This condition is not unusual, and will
disappear after the water becomes heated.
If, however, the condensation continues,
examine the piping and fittings for
possible leaks.
10
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WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the type
shown on the rating plate. Such conversion could result in hazardous operating conditions.
Gas Supply
The branch gas supply line to the water
heater should be clean 1/2” black steel
pipe or other approved gas piping
material.
the gas piping must be of the type resistant
to the action of LP gas. Use compound
sparingly on male threads only.
A sediment trap should be installed at the
bottom of the gas line.
A ground joint union or ANSI design
certified semi-rigid or flexible gas
Do not use excessive force (over 31.5 ft
lbs.) in tightening the pipe joint at the gas
control (thermostat) inlet, particularly if
teflon pipe compound is used, as the valve
body may be damaged.
appliance connector should be installed
in the gas line close to the water heater.
The National Fuel Gas Code (NFGC)
mandates a manual gas shut-off valve: See
(NFGC) for complete instructions.
The inlet gas pressure to the water heater
must not exceed 10.5” w.c. for natural gas,
or 14” w.c. for LP gas. For purposes of
input adjustment, the minimum inlet gas
pressure (with main burner on) is shown
on the water heater rating plate. If high or
low gas pressures are present, contact your
gas supplier for correction.
If flexible connectors are used, the
maximum length shall not exceed 36”
and must meet the requirements in ANSI
Z21.24-Connectors for Gas Appliances.
If lever type gas shut-offs are used,
they shall be T-Handle type.
Compound used on the threaded joints of
Leak Testing
The water heater and its gas connections
must be leak tested at normal operating
pressures before it is placed in operation.
WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury, or
death could result.
The factory connections to the gas
control (thermostat) should also be leak
tested after the water heater is placed in
operation.
Turn on the manual gas shut-off
valve near the water heater.
Use a soapy water solution to test for
leaks at all connections and fittings.
Bubbles indicate a gas leak that must
be corrected.
Pressure Testing the Gas Supply System
The water heater and its manual gas
The water heater must be isolated from
shut-off valve must be disconnected from the gas piping system by closing the
the gas supply piping system during any
pressure testing of that system at
manual gas shut-off valve during any
pressure testing of the gas supply piping
pressures in excess of 3/8 psi (10.5” w.c.) at pressures equal to or less than
for natural gas, or 1/2 psi (14” w.c.) for
LP gas.
3/8 psi (10.5” w.c.) for natural gas, or
1/2 psi (14” w.c.) for LP gas.
High Altitude
Input rating of this water heater is
WARNING: Failure to
install a water heater
suitable for the altitude at
the location it is intended to
serve, can result in improper
operation of the appliance
resulting in property
damage and/or producing
carbon monoxide gas, which
could result in personal
injury, or death.
For installation between 2,000 and 7,700
feet, refer to the Venting Information
tables on page 13 and 14 for maximum
vent lengths.
based on sea level operation. At higher
elevations the actual input rate may be
lower than the value listed on the rating
label due to the derating of natural gas and
LP gas. This water heater can be installed
at elevation up to 2,000 feet without any
change or modification.
Installations above 7,700 feet are not
authorized.
Contact the local gas supplier for more
information.
11
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Installing the water heater.
The water heater must be installed with the factory supplied blower assembly in place.
Venting
The water heater must be vented to the
DANGER: Failure to
install the blower assembly
The support method used should isolate
and properly vent the water
heater to the outdoors as
outlined in the Venting
section of this manual will
result in unsafe operation of
the water heater causing
bodily injury, explosion,
fire or death.
outdoors as described in these instructions. the vent pipe from floor joists or other
DO NOT connect this water heater to
an existing vent or chimney - it must
be vented separately from all other
appliances.
structural members to help prevent the
transmission of noise and vibration.
Do not support, pin or otherwise secure
the venting system in a way that restricts
the normal thermal expansion and
NOTICE: This unit can be vented using
only the following recommended pipe
material. Use only 2- or 3-inch diameter
pipe.
contraction of the chosen venting material.
To avoid the risk of fire,
explosion, or asphyxiation
from carbon monoxide,
NEVER operate the water
heater unless it is properly
vented and has adequate air
supply for proper operation
as outlined in the Venting
section of this manual.
If the water heater is being installed as a
replacement for an existing power vented
water heater, a thorough inspection of
the existing venting system must be
performed prior to any installation work.
PVC (Schedule 40, ASTM D1785)
CPVC (Schedule 40, ASTM F441)
ABS (Schedule 40, ASTM D2661)
Verify that the correct materials as
detailed above have been used, and
that the minimum or maximum vent
length and terminal locations as
detailed in this manual have been
met.
ABS (Schedule 40 DWV, Cellular Core,
ASTM F891)
The vent pipe must overlap
a minimum of ½” on each
connection. It is important
that the vent pipe engages
fully into any pipe fitting
and be kept in that position
until the adhesive has fully
cured. DO NOT drill or
punch holes in the plastic
pipe or fittings.
The fittings, other than the TERMINATION,
should be equivalent to the following:
Carefully inspect the entire venting
system for any signs of cracks or
fractures, particularly at the joints
between elbows or other fittings and
the straight length of vent pipe.
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM D2661)
The unit may be vented horizontally
through a wall or vertically through the
roof.
Check the system for signs of sagging
or other stresses in the joints as a
result of misalignment of any
components in the system.
NOTICE: This unit is
equipped with a Flammable
Vapor Sensor. Do not
apply power until enough
time has passed to allow the
vapors from the primer and
cement to dissipate.
Vent pipe runs must be adequately
supported along both vertical and
horizontal lengths.
If any of these conditions are found,
they must be corrected in accordance
with the venting instructions in this
manual before completing the
installation and putting the water
heater into service.
Maximum unsupported length is
recommended to be no more than 6 feet.
It is imperative that the first hanger
be located on the horizontal length
immediately adjacent to the first
90-degree elbow from the vertical rise of
vent pipe connected to the water heater.
Additional installation infor-
mation for The Commonwealth
of Massachusetts is located on
the back page of this manual.
Blower Assembly Installation
(if not factory installed)
Rubber
Coupling
Sheet Metal
Screws
Blower
Connect blower assembly with the electrical connector. Attach
Blower Assembly to top pan using the six (6) screws provided
(See diagram to the left). Install rubber coupling (supplied in
the box with water heater) on blower housing and secure it.
Assembly
Flue
Baffle
Electrical
Connector
NOTICE: The Blower Assembly is model specific and only
the blower assembly supplied should be used on this water
heater.
12
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Maximum and Minimum Vent Lengths for Residential
40 & 50 Gallon Power Vents ONLY
Minimum vent length for 2”vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and three (3) feet of horizontal pipe.
Maximum
Altitude for
2” & 3”
Maximum Venting information for 2” Vents*
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
See Maximum Altitude
chart on left.
Models
Number of
90° elbows
with Vent
Number
of 45°
Elbows
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
Vents
42VP40SF,
42VP40SPF,
42VP50SF,
42VP50SPF
5,200’
7,700’
One (1)
One (1)
Two (2)
Two (2)
Three (3)
None
One (1)
None
44
41
38
35
32
34
31
28
25
22
42VP40F,
42VP40PF,
42VP50F,
42VP50PF
One (1)
None
* For the 2” vent, one 90° elbow is approximately equal to 6 feet of vent pipe.
One 45° elbow is approximately equal to 3 feet of vent pipe.
Minimum vent length for 3” vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 3” Vents**
NOTICE: The mixing of 2" and
3" vent pipe is not recommended.
If 3" pipe is used, a 2" to 3"
reducer fitting is recommended at
the rubber coupling.
Number of 90° elbows
with Vent
Number of
45° Elbows
Maximum Vent Pipe
Length in Feet (ft)
0-Maximum Altitude: See chart on upper left.
One (1)
None
One (1)
None
95
92.5
90
One (1)
Two (2)
Two (2)
Three (3)
Three (3)
Four (4)
Four (4)
Five (5)
This water heater is supplied with
a two-inch Schedule 40 PVC 45°
vent terminal. When venting
with 3" pipe, a Schedule 40 PVC
45° vent terminal must be used.
Screens for both 2" and 3" vent
terminals have been included.
One (1)
None
87.5
85
One (1)
None
82.5
80
One (1)
None
77.5
75
** For the 3” vent, one 90° elbow is approximately equal to 5 feet of vent
pipe. One 45° elbow is approximately equal to 2.5 feet of vent pipe.
13
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Installing the water heater.
Maximum and Minimum Vent Lengths for Residential
60 Gallon Power Vents ONLY
Minimum vent length for 3” vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 3” Vents
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
See Maximum Altitude
chart on left.
Number of
90° elbows
with Vent
Number
of 45°
Elbows
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
Maximum
Altitude for
3” & 4”
Models
Vents
One (1)
One (1)
Two (2)
Two (2)
Three (3)
None
One (1)
None
45
42.5
40
35
32.5
30
42VP60F
42VP60PF
7,700’
One (1)
None
37.5
35
27.5
25
** For the 3” vent, one 90° elbow is approximately equal to 5 feet of vent
pipe. One 45° elbow is approximately equal to 2.5 feet of vent pipe.
Minimum vent length for 4” vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 4” Vents**
NOTICE: The mixing of 3" and 4"
vent pipe is not recommended. If
4" pipe is used, a 2" to 4" reducer
fitting is recommended at the
rubber coupling.
Number of 90° elbows
with Vent
Number of
45° Elbows
Maximum Vent Pipe
Length in Feet (ft)
0-Maximum Altitude: See chart on upper left.
One (1)
None
One (1)
None
95
92.5
90
One (1)
Two (2)
Two (2)
Three (3)
Three (3)
Four (4)
Four (4)
Five (5)
This water heater is supplied with
a 3" Schedule 40 PVC 90° vent
terminal. When venting with 4"
pipe, a Schedule 40 PVC 90° vent
terminal must be used. Screens for
both 3" and 4" vent terminals have
been included.
One (1)
None
87.5
85
One (1)
None
82.5
80
One (1)
None
77.5
75
** For the 4” vent, one 90° elbow is approximately equal to 5 feet of vent
pipe. One 45° elbow is approximately equal to 2.5 feet of vent pipe.
14
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NOTICE: All pipe, fittings, solvent cement, primers and procedures must conform to American
National Standards Institute and American Society for Testing and Materials (ANSI/ASTM) standards.
Horizontal Vent Terminal Location
The location of the vent terminal depends on the following
minimum clearances and considerations (see illustration):
Vent Terminal must be at least twelve (12) inches above
Soffit vents
grade level and above normal
4'
4'
snow levels.
Vent Terminal must be at least four (4) feet below, or four
(4) feet horizontally from any door, operable window, soffit,
under eave vent or gravity air inlet to the building or other
appliances, or from gas or electric meters. Do not locate
vent above walkways, doors, windows, air inlets, gas or
electric meters or other equipment.
Inside
corner
Electric
meter
4'
4'
Fresh
air
18"
4'
intake
18"
3' above
Vent Terminal must be at least three (3) feet above any
forced air inlet located within ten (10) feet. Any fresh or
make-up air inlet such as for a dryer or furnace area is
considered to be a forced air inlet.
if within 10'
12" (Above grade/snow level)
window or vent
Vent Terminal must be at least eighteen (18) inches from an
inside corner formed by two exterior walls.
Additional Considerations
Caulk
Do Not install vent terminal under any patio or deck.
Rising moisture will
collect under eaves
To help prevent moisture from freezing on walls and under
eaves, do not locate vent terminal on the side of a building
with prevailing winter winds.
If soffit vent is too
close, block off and
install new vent at
another location
6'
When terminating the vent pipe through brick or masonry
surfaces, a rust-resistant sheet metal backing plate
behind the vent termination is recommended.
(See illustration.)
Inside
corner
Caulk
6' (1.83 m)
caulk
6' caulk zone
zone or to edge of
window etc., starting
within 6'
Caulk
Do Not locate vent terminal too close to shrubbery, as flue
gasses may damage them.
Caulk all cracks, seams and joints within six (6) feet of vent
terminal.
2 ft. sq. sheet metal plate on brick or
2
b
masonry surface is recommended.
4'
All painted surfaces should be primed to lessen the chance of
physical damage. Painted surfaces will require maintenance.
WARNING Moisture in the flue gas will condense as it
:
Insulate vent pipe exposed to cold conditions (attics, crawl
spaces, etc.) with inflammable material to help prevent
moisture from accumulating in vent pipe.
leaves the vent terminal. In cold weather this condensate can
freeze on the exterior wall, under the eaves and on
surrounding objects. Some discoloration to the exterior of
the building is to be expected. However, improper location
or installation can result in severe damage to the structure
or exterior finish of the building
Do Not extend exposed vent pipe outside of building.
15
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NOTICE: All pipe, fittings, solvent cement, primers and procedures must conform to American
National Standards Institute and American Society for Testing and Materials (ANSI/ASTM) standards.
Horizontal Vent Installation
Once the vent terminal location has been determined, make a
2' x 2' Sheet
hole through the exterior wall to accommodate the vent pipe.
Vent pipe must exit exterior wall horizontally only.
Metal Shieldon
Brick or Masonry
Walls
Insert a small length of vent pipe through the wall and connect
the coupling as shown to the left.
*Vent Terminal
with 1/2" Mesh
Protective
Vent Pipe
Place the 1/2" mesh metal screen inside the terminal fitting
and connect it as shown to the vent pipe on the exterior of the
building.
Screen Inside
From
Water Heater
Complete the rest of the vent pipe installation to the water
heater's vent connector fitting on the blower outlet.
Pipe Coupling
Outside of
Building Wall
If necessary support horizontal run as previously mentioned.
* FOR THE 60 GALLON MODELS ONLY a 90° vent
termination must be used and must be at least 2" from the wall.
Vertical Vent Termination Location
The location of the vent terminal depends on the following
minimum clearances and considerations (see illustration):
Insert 1/2" Mesh Protective
Screen Inside Terminal Elbow
Minimum twelve (12) inches above roof.
Short Piece of Vent Pipe
Minimum twelve (12) inches above anticipated snow level.
Maximum twenty-four (24) inches above roof level without
additional support for vent.
Four (4) feet from any gable, dormer or other roof structure
with building interior access (i.e., vent, window, etc.).
Vent Pipe
Through Roof
Min. 12" Above Roof
Ten (10) feet from any forced air inlet to the building. Any
fresh or make-up air inlet such as a dryer or furnace area is
considered to be a forced air inlet.
Min. 12" Above
Anticipated Snow
Level.
Elbow
Vent Terminal
Max. 24" Above Roof
(Without Additional
Support)
Vertical Vent Installation
Once the vent terminal location has been
determined, make a hole through the roof
and interior ceiling to accommodate the
vent pipe.
Determine the vent terminal height and cut
vent pipe accordingly. Refer to the above
section for proper vent terminal height.
Connect vent elbow onto vertical pipe
through roof.
Complete the vent pipe installation to the
water heater's vent connector fitting on the
blower outlet.
Connect short piece of vent pipe
(approximately 3" long) to elbow, then
insert 1/2" mesh metal screen into terminal
elbow and join it to the short piece of vent
pipe.
Support vertical or horizontal lengths as
previously mentioned.
Install adequate flashing where the vent
pipe passes through the roof.
16
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Installing the water heater.
NOTICE: All pipe, fittings, solvent cement, primers and procedures must conform to American
National Standards Institute and American Society for Testing and Materials (ANSI/ASTM) standards.
Cementing Joints
All joints in the vent piping must be
properly sealed and the following
materials are recommended:
Wipe all excess cement from the joint
with a rag. Allow 15 minutes before
handling. Cure time will vary according
to fit, temperature and humidity.
WARNING: DANGER
OF FIRE OR BODILY
INJURY - Solvent cements
and primers are highly
flammable. Provide
adequate ventilation and do
not assemble near heat
source or open flame. Do not
smoke. Avoid skin or eye
contact. Observe all cautions
and warnings on material
containers.
PVC materials should use ASTM D2564
grade cement.
NOTICE: Stir the solvent cement
frequently while using. Use a natural
bristle brush or the dauber supplied
with the can. The proper brush size is
one inch.
CPVC materials should use ASTM F493
grade cement.
ABS materials should use ASTM D2235
grade cement.
NOTICE: This unit is equipped with a
Flammable Vapor Sensor. Do not apply
power until enough time has passed to
allow the vapors from the primer and
cement to dissipate.
Cleaner-Primer and Medium Body
Solvent Cement:
CAUTION:
For proper installation:
Cut pipe end square, remove jagged
edges and burrs. Chamfer end of pipe,
then clean fitting socket and pipe joint
area of all dirt, grease or moisture.
DO NOT use solvent cement
that has become curdled,
lumpy or thickened.
After checking pipe and socket for
proper fit, wipe socket and pipe with
cleaner-primer. Apply a liberal coat of
primer to inside surface of socket and
outside of pipe. Do not allow primer to
dry before applying cement.
DO NOT thin solvent
cement. Observe shelf
precautions printed on the
containers.
For applications below 32°F
use only low temperature
type solvent cement.
Apply a thin coat of cement evenly in
the socket. quickly apply a heavy coat
of cement to the pipe end and insert
pipe into fitting with a slight twisting
motion until it bottoms out.
Appropriate solvent and
cleaner must be used for the
type of vent pipe used (PVC,
CPVC or ABS).
NOTICE: Cement must be fluid; if not,
recoat.
Hold the pipe fitting for 30 seconds to
prevent the tapered socket from pushing
the pipe out of the fitting.
17
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Wiring
If local codes permit, the water heater may The maximum current draw is
be connected to electric service with the
power cord provided (DO NOT use an
extension cord). A grounding receptacle is
required.
approximately 5.0 amps.
The water heater must be electrically
grounded in accordance with local
codes, or, in the absence of local codes,
in accordance with latest edition of the
National Electric Code ANSI/NFPA No.
70. Refer to the figures below for water
If local codes do not permit the use of
cord connections, a 120 V, 50/60 Hz
power supply, with suitable disconnecting
means, must be connected to the black and heater internal wiring.
white leads in the heater control enclosure.
NOTE: It is not recommended that this
A knock-out hole is provided to permit use unit be installed on a GFCI circuit.
of conduit or metal-clad cable connectors.
CONNECTION DIAGRAM
SCHEMATIC
ON / OFF
SWITCH
BL
INDUCER
W
G
FLAME
SENSOR
IGNITER
FV SENSOR
PRESSURE
SWITCH
TEMPERATURE
SWITCH
ELECTRONIC
CONTROL
G
6 PIN CONNECTOR
L2
G
G
BK
I
IGNITER AND
FLAME PROBE
FV
BK
W
R
R
Y
BL
L1
W
GAS
VALVE
ON / OFF
SWITCH
BK
BK
W
TEMPERATURE PRESSURE
SWITCH
SWITCH
“H” “N”
ELECTRONIC
CONTROL
W
Y
BK = BLACK
BL = BLUE
G
R
= GREEN
= RED
R
W
Y
= WHITE
= YELLOW
BL
R
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
18
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Installing the water heater.
Insulation Blankets
Insulation blankets, available to the
general public, for external use on gas
water heaters are not necessary. The
purpose of an insulation blanket is to
reduce the standby heat loss encountered
with storage tank heaters. This water
heater meets or exceeds the National
Appliance Energy Conservation Act
standards with respect to insulation and
standby loss requirements making an
insulation blanket unnecessary.
CAUTION: If local codes require the
application of an external insulation
blanket to this water heater, pay careful
attention to the following so as not to
restrict the proper function and
WARNING: If local
codes require external
application of insulation
blanket kits the
manufacturer’s instructions
included with the kit must
be carefully followed.
operation of the water heater:
● Do not cover the operating or warning
labels attached to the water heater or
attempt to relocate them on the exterior
of insulation blanket.
Do not apply insulation to the top of the
water heater. This will interfere with the
safe operation of the blower assembly.
The manufacturer’s warranty does not
cover any damage or defect caused by
installation, attachment or use of
Do not cover the burner access door,
jacket door, gas control (thermostat)/gas
valve or pressure and temperature relief
valve.
any type of energy saving or other
unapproved devices (other than those
authorized by the manufacturer) into, onto
or in conjunction with the water heater.
The use of unauthorized energy saving
devices may shorten the life of the water
heater and may endanger life and property.
Do not apply insulation to the bottom
of the water heater or the area where
the combustion air inlet openings and
Flammable Vapor Sensor are located.
This area must be unobstructed so as
not to restrict combustion air flow to
the burner or operation of the sensor.
The manufacturer disclaims any
responsibility for such loss or injury
resulting from the use of such
unauthorized devices.
Inspect the insulation blanket frequently
making certain it has not sagged
and it is not restricting the air flow
to the combustion air inlet openings
(perforation holes) or the Flammable
Vapor sensor located around the lower
perimeter of the water heater jacket.
This could result in an unsafe operating
condition.
Hot and Cold Pipe Insulation Installation
NOTICE: If pipe
Dilution Air Holes
insulation is used, ensure
that the thickness does
not exceed ½”. Insulation
thicker than ½” can
interfere with the Blower
Assembly Dilution Air
Holes.
Typical vertical piping arrangement
Typical horizontal piping arrangement
For increased energy efficiency, some
water heaters have been supplied with
two 24” sections of pipe insulation.
Please install the insulation, according
to the illustrations above, that best meets
your requirements.
19
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Heat Trap
For increased energy efficiency, some
water heaters have been supplied with
factory installed 3/4” NPT heat traps in
the hot outlet line and cold water inlet
line.
These heat traps may require a minimum
of one (1) 90° 3/4” NPT elbow and may
require an additional 90° 3/4” NPT elbow
or a 3/4” coupling depending on your
installation needs. See Illustration of
nipples and heat traps on page 33.
During Installation of this water heater...........
DO
DON’T
❑
DO check inlet gas pressure to ensure
❑
DON’T block or restrict Combustion
that it is within the range specified on the
rating plate.
Air Inlet Openings or the Flammable Vapor
Sensor located around the lower portion of
the water heater jacket.
❑
DO provide adequate air for combustion
and ventilation as discussed in the Use and
Care Manual and the National Fuel Gas
Code.
❑
DON’T block or restrict the Blower
Assembly Dilution Air holes (see diagram to
the left).
❑
DO maintain proper clearances to
❑
DON’T remove the Burner Access
combustibles as specified on the rating
plate.
Door unless absolutely necessary. This
should only be done by a qualified service
technician. A new burner access door gasket
must be installed on any burner access door
that has been removed.
❑
DO allow enough time for joint cement
vapors to dissipate BEFORE applying
power to the water heater.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
❑
DO ensure that the venting system
❑
DON’T install this water heater where
complies with the guidelines found in the
Use and Care Manual and National Fuel Gas
Code.
standing water may occur. The base of the
water heater is meant to be mounted on a dry
surface.
❑
DO contact a qualified service technician
❑
DON’T allow cleaners, solvents, or other
if the main burner will not stay lit. The burner
chamber is designed to be sealed utilizing a
gasket and tamper resistant screws.
materials to come into contact with the
Flammable Vapor Sensor.
❑
DON’T operate the water heater if the
Burner Access
Door Grommet
V
A
CATION
A
B
C
VER
HOT
Y
W
ARM
COOLER
HOTTER
Sight Glass
sight glass or burner access door grommet is
damaged or broken (see to the left).
Flammable
Vapor Sensor
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Installation Checklist
A. Water Heater Location
❑
❑
Close to area of vent.
❑
Provisions made to protect area from water
damage.
Indoors and protected from freezing
temperatures.
❑
❑
Sufficient room to service heater.
❑
Proper clearance from combustible surfaces
observed and water heater not installed on
carpeted floor.
Combustible materials, such as clothing,
cleaning materials, rags, etc. clear of the
base of the heater.
❑
❑
Sufficient fresh air supply for proper
operation of water heater.
❑
❑
Clearances of 1” from combustion air inlet
openings observed
Air supply free of corrosive elements and
flammable vapors.
Flammable vapor sensor is not blocked.
B. Water Supply
❑
❑
Water heater completely filled with water.
Air purged from water heater and piping.
❑
Water connections tight and free of leaks.
C. Gas Supply
connections and fittings for possible gas
leak.
❑
Gas line equipped with shut-off valve, union
and sediment trap.
❑
❑
Approved pipe joint compound used.
Soap and water solution used to check all
❑
❑
Gas Company inspected installation (if
required).
D. Relief Valve
❑
Temperature and Pressure Relief Valve
Discharge line protected from freezing.
properly installed and discharge line run to
open drain.
E. Venting
❑
Heater vented separately from all other
appliances.
❑
❑
❑
Vent pipe supported at required intervals.
Appropriate minimum clearances observed.
❑
Flue baffle properly hung in top of heater’s
flue.
Precautions taken to prevent moisture damage
around vent termination.
❑
❑
Blower assembly properly installed.
❑
Vapors from vent pipe cement and primer
have dissipated prior to applying electrical
power.
Proper materials and techniques used in vent
assembly.
❑
Vent pipe properly secured to blower
housing.
F. Wiring
❑
Correct power supply (120 V).
Electrical connections tight.
❑
Heater properly grounded and proper polarity
observed.
❑
21
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Supplemental instructions for gas water heaters installed
in potable water/space heating applications.
Local codes or plumbing authority requirements may vary from the instructions or diagrams provided
in this manual and take precedent over these instructions.
Hot water
Combination Potable Water and Space Heating Application
supply to
house
Tee fitting must be installed as shown.
DANGER: If this water heater is
This ensures that any air in the water lines
will be purged through the domestic water
faucets and showers.
installed in an application intended to
supply domestic hot water needs and
hot water for space heating purposes,
do not connect the heater to an existing
heating unit or components of a heating
system that have previously been used
with a non drinking water system. Toxic
chemicals such as those used for boiler
treatment may be present and will
contaminate the drinking water supply
causing possible health risks. Never
introduce toxic chemicals, such as those
used for boiler treatment, into this
system.
Hot water
supply to
heating
unit
From HOT
outlet on
water heater
DANGER: When this system
requires water for space heating at
elevated temperatures (above 125°F
[52°C.]), a mixing or tempering valve
must be installed in the hot water
supply line to the house in order to
reduce the scald hazard potential.
Tee fitting for vertical hot
water supply lines.
From HOT
Hot water
supply to
house
outlet on
water heater
DANGER: Any piping or components
used in the installation of this water
heater in a combination potable and
space heating application must be
suitable for use with drinking water.
Notice: 50' - 0" maximum distance from
water heater to fan coil (developed length)
is required for Massachusetts State.
Hot water supply
to heating unit
Tee fitting for horizontal hot
water supply lines.
Typical Piping Diagram for Combination Potable/Space Heating Installation
Pressure Gauge
Nominal 3/4" size mixing or tempering valve
(refer to warning above). Follow mixing or
tempering valve manufacturer’s instructions for
installation of the valve.
3/4" Check Valve with 1/8" Hole
3/4" Shut-Off Valve (Typ.)
Minimum of 2'-0" developed length
of 3/4" pipe.
3/4" Tempered
domestic hot water
supply to house.
3/4" cold water supply
Air vent
Spring loaded check valve in heating unit
hot water supply line and cold water return
line (not supplied with water heater)
3/4" Shut-Off Valve (Typ.)
NOTE: This check valve is incorporated
in some heating units. Refer to the
installation instructions supplied with
specific heating unit to determine if it is
required.
Heat Trap
6” Min.
2 Gallon Thermal
Expansion Tank (if
required-not supplied
with water heater)
3/4" Shut-
Off Valve
(Typ.)
Isolation valve in hot water supply line
to heating unit (not supplied with water
heater)
Hot water
to space heater
Hot water coil
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
All bronze pump.
Check valve
internal in pump.
Temperature and Pressure Relief
Valve, tie to location approved by
local code
Air bleed valve.
Water Sample Tap.
Gas line to water heater
3/4" HWS & HWR
to Heating Coil.
To HVAC Unit.
Drain valve
(not supplied with
water heater)
Temperature and pressure relief
valve discharge line
FAN
T
ON
OFF
HEAT
COOL
Isolation valve in
Gas Fired
Water Heater
Gas Control (Thermostat)
cold water return line
from heating unit (not
supplied with water
heater)
Air Handler
Gas Direct Vent discharge
must comply with Local
and State Codes
Water Heater drain pan installed in
accordance with the Local and State
Code
Water Heater to be in accordance with
the Local and State Energy Code
V a cuum Relief Valve
(Not Supplied)
Combustion Air Inlet
Openings
Electronically controlled pump timer.
Activates every 6 hours for 60 seconds.
Wire to bronze pump.
All water piping shall be insulated in
accordance with Local and State Energy
Code.
If required, install per local codes
and valve manufacturer’s
instructions.
22
6” Air Gap
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Lighting the water heater.
Before operating this water heater, be sure to read and follow the instructions on the label pictured
below and all other labels on the water heater, as well as the warnings printed in this manual. Failure
to do so can result in unsafe operation of the water heater resulting in property damage, personal
injury, or death. Should you have any problems reading or following the instructions in this manual,
STOP, and get help from a qualified person.
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING: If you do not follow these instructions and use the Use & Care Manual instructions
exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
A. This appliance does not have a pilot. It is equipped
with an ignition device which automatically lights
the burner. Do NOT try to light the burner by hand.
instructions.
If you cannot reach your gas supplier, call
the fire department.
B. BEFORE PUTTING THIS APPLIANCE INTO
SERVICE - Smell all around the appliance
area for gas. Be sure to smell next to the floor
because some gas is heavier than air and
will settle on the floor.
C.
D.
Use only your hand to push in the gas control
buttons. Never use tools. If the control buttons
will not push in, don’t try to repair them, call a
qualified service technician. Force or attempted
repair may result in fire or explosion.
WHAT TO DO IF YOU SMELL GAS
Do not use this appliance if any part has been
under water. Immediately call a qualified in-
staller or service agency to replace a flooded
water heater. Do not attempt to repair the unit!
It must be replaced!
Do not try to light any appliance.
Do not touch any electric switch; do not use
any phone in your building.
Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppliers
OPERATING INSTRUCTIONS
Stop! Read the safety information above on
this label.
assembly to the “ON”position.
1.
2.
9.
Set thermostat to the desired temperature setting
by pressing the COOLER and HOTTER
Set the thermostat to the lowest setting by
pressing the COOLER or HOTTER buttons
buttons at the same time and holding them for (1)
second. Depress the HOTTER button until the
desired temperature is/are lit. The preferred start-
ing point for temperature setting is indicated by
on the thermostat.
at the same time and holding them for (1)
second. Depress the COOLER button until
the WARM indicator light is lit.
Toggle the “ON/OFF”switch located on the
blower assembly to the “OFF”position.
3.
4.
10.
If the appliance will not operated, follow the
instructions “TO TURN OFF GAS TO APPLIANCE”
and call your service technician or gas supplier.
Turn off all electric power to the appliance.
5. This appliance is equipped with a Hot Surface
Ignition System which automatically lights the
burner. Do NOT open the inner door of this
appliance and try to light the burner by hand!
VACATION
WARM
A
B
C
VERY
HOT
COOLER
HOTTER
Wait five (5) minutes to clear out any gas. If you
6.
smell gas, STOP! Follow “B”in the safety inform-
ation above on this label. If you do not smell
gas, go to the next step.
WARNING
7. Turn on all electric power to the appliance.
Toggle the “ON/OFF”switch located on the blower
8.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to the lowest setting by first depressing the C OOLER
and HOTTER buttons at
the same time and holding for 1 second. Depress the COOLER button until only the WARM indicator
light appears.
2.
3.
Toggle the“ON/OFF”switch located on the blower assembly to the“OFF”position.
Turn off all electric power to the appliance if service is to be performed.
AX4762
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Operating the water heater.
CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a
long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate such
gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink
before using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an unusual sound
such as air escaping through the pipe as the water begins to flow. Do not smoke or use an open flame near the faucet at the
time it is open.
Safety Precautions
Do turn off manual gas shut-off valve if water heater
has been subjected to over heating, fire, flood,
physical damage or if the gas supply fails
to shut off.
Do Not store or use gasoline or other flammable
vapors and liquids, such as adhesives or paint thinner,
in vicinity of this or any other appliance.
If such flammables must be used, open doors
and windows for ventilation, and all gas burning
appliances in the vicinity should be shut off including
their pilot burners, to avoid vapors lighting.
Do Not turn on water heater unless it is completely
filled with water.
Do Not turn on water heater if cold water supply
shut-off valve is closed.
NOTICE: Flammable vapors can be drawn by air
currents from surrounding areas to the water heater.
Do Not allow combustible materials such as
newspaper, rags or mops to accumulate near
water heater.
If there is any difficulty in understanding or following
the Operating Instructions or the Care and Cleaning
section, it is recommended that a qualified person or
serviceman perform the work.
Operating Procedure
This heater is equipped with a hot surface
ignitor to light the main burner. There is
no pilot light to be lit, but on initial start-
up, it is recommended that the outer door
be removed (leave inner door in place for
the gas valve should open and the main
burner ignite. After the main burner ignites,
replace the outer door. If no main burner
flame is established, the gas control will go
through three trials for ignition before going
safety) to determine if the hot surface ignitor into a lock-out. A warning light will alert
and main burner are operating properly.
the user of this lock-out condition. If this
happens, refer to “Troubleshooting Guide.”
Once filled with water, it is only necessary
to plug the power cord in and make sure the
“ON/OFF” switch located on the blower
assembly is in the “ON” position to put the
water heater into operation. Within seconds
the hot surface ignitor should heat up, then
TO SHUT OFF WATER HEATER – Turn
switch on the blower assembly to the “OFF”
position.
Water Temperature Setting
The temperature of the water in the water
heater can be regulated by pressing the
buttons on the front of the gas control
(thermostat).
Water temperatures above 125°F
!
DANGER: Hotter water
can cause severe burns or death from
scalding. Be sure to read and follow the
warnings outlined in this manual and on
the label located on the water heater near
the gas control thermostat.
increases the Potential
for Hot Water SCALDS.
Households with small
children, disabled, or elderly
persons may require a 120°F
or lower gas control
(thermostat) setting to
prevent contact with HOT
water.
Safety and energy conservation are factors
to be considered when selecting the water
temperature setting of the water heater’s
gas control (thermostat(s)). The lower the
Mixing valves are available for reducing
point of use water temperature by mixing
temperature setting, the greater the savings hot and cold water in branch water
in energy and operating costs.
lines. Contact a licensed plumber or
the local plumbing authority for further
information. (See page 4 for more details.)
To comply with safety regulations, the gas
control (thermostat) was set at its lowest
setting before the water heater was shipped
from the factory. The recommended
starting point temperature is 120°F.
The chart on the next page may be used
as a guide in determining the proper water
temperature for your home.
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Operating the water heater.
Water Temperature Setting…
Maximum water temperatures occur just
after the burner has shut off. To determine
the water temperature, turn on a hot water
faucet and place a thermometer in the
water stream.
The hottest temperature water will be at
the top of the tank, closest to the outlet
pipe delivering hot water to the home.
Stacking can cause this top layer of water
to be hotter than the water toward the
bottom of the tank near the gas control
(thermostat). Therefore, always remember
to test the water temperature with your
hand before use and remember that hotter
water increases the risk of scald injury.
To avoid any unintentional changes in
water temperature settings, the gas control
(thermostat) has a tamper resistant feature
for changing the temperature setting. To
change the temperature setting follow
these instructions.
Also, always supervise young children or
others who are incapacitated.
1. "Wake Up" the temperature indicators
by holding down both "COOLER" and
"HOTTER" temperature adjustment
buttons at the same time for one
The gas control (thermostat) is constructed
with a built in safety shut-off device
designed to shut off the gas supply to the
burner if the main burner is extinguished
for any reason.
second, see Figure below. One or two
of the temperature indicators will light
up. These indicators will only remain
on for 30 seconds if no further buttons
are pressed. After 30 seconds the
The gas control (thermostat) is also
equipped with a single use gas shut off
device that will shut off the gas supply
control will go back to "sleep" mode.
2. Release both of the temperature buttons. to the burner if the water heater exceeds
normal operating temperatures. Refer to
a. To decrease the temperature press
and release the "COOLER" button
until the desired setting is reached.
the Before You Call For Service section of
this manual, or contact your dealer.
!
WARNING: Should overheating occur or
the gas supply fail to shut off, turn off the
manual gas control valve to the appliance.
b. To increase the temperature press
and release the "HOTTER" button
until the desired setting is reached.
If the water heater has been subjected to
fire, flood or physical damage, turn off the
manual gas control (shut-off) valve, and
do not operate the water heater again until
is has been checked by a qualified service
technician.
NOTE: Holding down the button will not
continue to lower or raise the temperature
setting. The button must be pressed and
released for each temperature change
desired.
NOTICE: Replace any part of the gas
control system which has been under water.
A condition known as “stacking” or
“layering” can occur when a
series of short and frequent hot
water draws are taken.
VACATION
WARM
A
B
C
VERY
HOT
COOLER
HOTTER
WARNING
Time/Temperature Relationship in Scalds
Water Temperature
Time To Produce a Serious Burn
120°F
More than 5 minutes
11/2 to 2 minutes
125°F
Display
Temperature Setting
Burns on Adult Skin
130°F
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 11/2 seconds
About 1 second
▼ A B C
WARM = approx. 70°F (21°C)
▼ = approx. 120°F (49°C)
A = approx. 130°F (54°C)
B = approx. 140°F (60°C)
C = approx. 150°F (66°C)
C-Flashing = approx. 160°F (71°C)
--------------------
More than 5 minutes
About 30 seconds
Less than 5 seconds
About 1-1/2 seconds
About 1/2 seconds
135°F
● ○ ○ ○ ○ ○
○ ○ ● ○ ○ ○
○ ○ ○ ● ○ ○
○ ○ ○ ○ ● ○
○ ○ ○ ○ ○ ●
○ ○ ○ ○ ○ ●
140°F
145°F
150°F
155°F
Table courtesy of Shriners Burn Institute
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Sequence of Operation…
During initial start-up or a call for heat,
the control will verify the vacuum switch
is open.
The blower motor will stay energized
for an additional 30 seconds after the
control verifies that the burner flame is
extinguished in order to clear combustion
gases from the water heater.
Once the control verifies the blower
vacuum switch is open, the control
will energize the blower motor for the
pre-purge sequence (approximately 5
seconds).
After the post-purge sequence, the control
will de-energize the blower motor and go
into a stand-by mode awaiting the next
call for heat.
The control will verify the blower vacuum
switch has closed, ensuring that the
blower is functioning properly and that the
venting system is not blocked.
This water heater is equipped with
a flammable vapor sensor that is
monitored continuously by the
electronic control in all modes of
operation.
The control will then proceed through
a sequence of self-diagnostics before
initiating a trial for ignition.
In the event that flammable vapors are
detected, the control will automatically
shut down the water heater and prevent
the water heater from being started again.
During the trial for ignition, the hot
surface ignitor will warm up.
Once the hot surface ignitor warms up, the
main gas valve will open allowing gas to
flow to the main burner.
The following is a list of materials that
will cause the Flammable Vapor Sensor
to shut down the water heater.
Once the main burner ignites, the control
will verify that the burner flame is present
through the flame sense circuit. The hot
surface ignitor will then turn off.
Vapors of Gasoline.
Vapors of certain flammable paints,
stains, and thinners.
Vapors of vent pipe Cement &
The main burner will remain lit
throughout the heat cycle until the water
temperature setting is reached.
Solvents.
Bleach (direct contact with
flammable vapor sensor).
Once the water temperature setting is
reached, the control will close the main
gas valve which will extinguish the main
burner flames.
Some other flammable materials and
their vapors.
If the flammable vapor sensor shuts
down the water heater, then the electronic
control will display the appropriate error
code and you should then promptly
contact a qualified service technician.
Refer to the “Notice” on page 3 for
additional information.
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Care and cleaning of the water heater.
Draining the Water Heater
Before turning off the cold water supply to
the water heater, open a hot water faucet
allowing sufficient cold water into the
tank to prevent the risk of a scald injury
while draining the water heater. Once the
water in the tank is no longer hot, turn off
the cold water supply to the water heater.
Open a hot water faucet or lift the handle
on the relief valve to admit air to the tank.
!
CAUTION: Shut off gas to the water
heater at the gas control (thermostat) gas
cock or manual shut-off valve before
draining water.
!
DANGER: Before manually operating the
temperature and pressure relief valve, make
certain no one will be exposed to the hot
water released by the valve. The water
drained from the tank may be hot enough to
present a scald hazard and should be
directed to a suitable drain to prevent injury
or damage.
Attach a garden hose to the drain
valve on the water heater and direct
the stream of water to a drain. Open
the valve.
Routine Preventative Maintenance
DANGER: Before
manually operating the
relief valve, make certain
no one will be exposed to
the danger of the hot water
released by the valve. The
water may be hot enough to
create a scald hazard. The
water should be released
into a suitable drain to
prevent injury or property
damage.
Properly maintained, your water heater
will provide years of dependable trouble-
free service.
A water heater’s tank can act as a settling
basin for solids suspended in the water.
It is therefore not uncommon for hard
water deposits to accumulate in the bottom
of the tank. If allowed to accumulate,
these solids can cover the gas control
(thermostat) sensors, causing the sensors to
operate erratically. Because accumulated
solids can prevent the gas control
It is recommended that a periodic
inspection of the gas control (thermostat),
burner, relief valve, internal flue-way and
venting system should be made by service
personnel qualified in gas appliance repair.
(thermostat) sensors from accurately
reading the water temperature, the water
at the fixture can be hotter than the gas
control (thermostat) setting. It is suggested
that a few quarts of water be drained from
the water heater’s tank every month to
clean the tank of these deposits.
It is suggested that a routine preventative
maintenance program be established and
followed by the user.
!
DANGER: Hotter water
increases the potential for
Hot Water Scalds.
Inspect plastic vent pipe. Make certain
that all joints are secure and that vent
pipe supports are all in place. Check
the outdoor vent terminal to see that it is
free of obstructions, and that there is no
damage nearby casused by condensate.
Rapid closing of faucets or solenoid valves
in automatic water using appliances can
cause a banging noise heard in a water
pipe. Strategically located risers in the
water pipe system or water hammer
arresting devices can be used to minimize
the problem.
Inspect dilution air inlet and combustion
air inlet openings. Make certain no
blockage exists. Clean any lint, dirt or oil
accumulation that may exist.
At least once a year, lift and release the
lever handle on the temperature pressure
relief valve, located near the top of the
water heater, to make certain the valve
operates freely. Allow several gallons to
flush through the discharge line to an open
drain.
The anode rod should be removed from the
water heater’s tank annually for inspection
and replaced when more than 6” of core
wire is exposed at either end of the rod.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
Make sure the cold water supply is turned
off before removing anode rod.
DANGER: Failure to
perform the recommended
Routine Preventative
Maintenance can harm the
proper operation of this
water heater, which can cause
carbon monoxide dangers,
excessive hot water
This water heater incorporates a
NOTICE: If the temperature and
pressure relief valve on the water heater
discharges periodically, this may be due
to thermal expansion in a closed water
system. Contact the water supplier or
your plumbing contractor on how to
correct this. DO NOT plug the relief
valve outlet.
combustion shut off device that shuts
the operation of the water heater down if
undesirable combustion conditions occur,
such as the presence of flammable vapors
or blockage of the combustion air inlet
openings. Please contact a qualified
Service Technician if this occurs.
temperatures and other
potentially hazardous
conditions.
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!
DANGER: Combustible
materials, such as clothing,
cleaning materials, or
Housekeeping
Visually inspect the hot surface ignitor.
When installed in a closet, DO NOT block
or obstruct any of the combustion air inlet
openings located around the perimeter
of the water heater. A minimum of 1” is
required between these combustion air inlet
openings and any obstruction.
To ensure sufficient ventilation and
combustion air supply, proper clearances
must be maintained.
flammable liquids, etc., must
not be placed against or next
to the water heater.
DO NOT obstruct or block the
Flammable Vapor Sensor. The sensor
does not require any maintenance or
cleaning. DO NOT expose to cleaning
agents.
Venting System Inspection
The water heater’s internal flue must be
inspected annually to be certain it is clean
by removing the blower assembly and flue
baffle.
Inspect dilution air holes. Make certain no
blockage exists. Clean any lint, dirt or oil
accumulation that may exist.
Test for spillage at the dilution air holes
after 5 minutes of burner operation. Place
a blown out match or candle close to the
dilution are holes. The smoke from the
candle or match should be drawn into the
dilution air holes. If the smoke is pushed
away from the dilution air holes, the
blower or vent system may be blocked.
Contact qualified service personnel.
When reinstalling the flue baffle make
certain it is hung securely by its hanger at
the top of the flue way.
Reinstall the blower assembly.
Inspect plastic vent pipe. Make certain
that all joints are secure and that vent
pipe supports are all in place. Check
the outdoor vent terminal to see that it is
free of obstructions, and that there is no
damage nearby caused by condensate.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
Burner Inspection
Visually inspect the hot surface ignitor
and main burners annually.
!
CAUTION: For your safety, cleaning of
the burner must be performed only by
qualified service personnel, as it involves the
disconnection of gas piping and leak testing.
The burner chamber is a sealed area. If the
burner access door is removed, the burner
access door gasket must be replaced.
Through the sight glass, inspect the hot
surface ignitor with the main burner off
and inspect the main burner while firing.
If any unusual burner operation is noted,
the water heater should be shut off
until qualified service assistance can be
obtained.
For cleaning, remove the burner from the
water heater. A vacuum cleaner can be
used on the burner and floor shield inside
the water heater. The burner can also be
cleaned by scrubbing with mild detergent.
Proper burner flame pattern
28
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Care and cleaning of the water heater
Vacation and Extended Shut-Down
NOTICE: Refer to the
Hydrogen Gas Caution in the
Operating Instructions.
If the water heater is to remain idle for an
extended period of time, the power and
water to the appliance should be turned off should be checked by qualified service
After a long shut-down period, the
water heater’s operation and controls
to conserve energy and prevent a build-up
of dangerous hydrogen gas.
personnel. Make certain the water heater
is completely filled again before placing it
in operation.
The water heater and piping should be
drained if they might be subjected to
freezing temperatures.
Anode Rod
NOTICE: Do not remove
the anode rod from the water
heater’s tank, except for
inspection and/or replacement,
as operation with the anode
rod removed will greatly
shorten the life of the glass
lined tank and will exclude
warranty coverage.
This water heater is equipped with an
anode rod designed to prolong the life
of the glass lined tank. The anode rod is
slowly consumed, thereby eliminating or
minimizing corrosion of the glass lined
tank.
Water sometimes contains a high sulfate
and/or mineral content and together with
cathodic protection process can produce
a hydrogen sulfide, or rotten egg odor in
the heated water. Chlorination of the water
supply should minimize the problem.
29
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Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater
down if undesirable combustion conditions occur, such as the presence of flammable vapors or blockage of
the combustion air inlet openings. Please contact a qualified Service Technician if this occurs.
Problem
Possible Causes
What To Do
Condensation
This usually happens when
a new water heater is
filled for the first time.
This is normal. After the water in the tank warms
up, the condensation will disappear. If, however, the
condition persists, examine the piping and fittings
for possible leaks.
Moisture from the products
of combustion condensing
on the tank surface.
This is normal and will disappear in time. Excessive
condensation can cause main burner outage.
An undersized water
heater will cause
condensation.
Use a water heater size that meets the requirements
of your needs.
Yellow flame
or soot
Scale on top of the burner.
Contact a qualified service technician to remove scale.
Flue or Combustion air inlet
openings are restricted.
Remove obstruction or debris from flue or
combustion air inlet openings on water heater jacket.
Not enough combustion or
ventilation air supplied to
the water heater location.
Proper operation of the water heater requires air for
combustion and ventilation. See the Combustion and
Ventilation Air information in the “Installing The
Water Heater” section of this manual.
Unable to light
Air in gas line.
Contact a qualified service technician to purge the air
the main burner
from the gas line.
Gas Cock Knob not
correctly positioned.
Contact a qualified service technician to correctly position
the gas cock knob.
Blocked Exhaust
Contact a qualified service technician to evaluate vent
pipe for blockage.
Pressure Switch
Make sure the pressure switch hose is not "kinked".
Wire Connection not fully
secured.
Contact a qualified service technician to confirm wire
connections.
Combustion Shut-off Device
tripped,
Combustion shut-off device should be inspected by a
qualified service technician.
Gas Control Problem
Contact a qualified service technician.
Main burner does not
stay lit
Gas Controls (Thermostat’s)
single use gas shut-off device
has opened.
The gas control (thermostat) should be replaced by a
qualified service technician.
Combustion Shutoff Device
Tripped.
The combustion shutoff device should be inspected
by a qualified service technician.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors or other safety
devices. Refer repairs to qualified service personnel.
30
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Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down
if undesirable combustion conditions occur, such as the presence of flammable vapors or blockage of the
combustion air inlet openings. Please contact a qualified Service Technician if this occurs.
Problem
Possible Causes
What To Do
Rumbling noise
Scale and sediment
Drain the water heater to remove scale and sediment from
the tank. Refer to the top of page 26.
Relief valve
producing popping
noise or draining
Pressure build up
caused by thermal
expansion to a
This is an unacceptable condition and must be
corrected. Contact the water supplier or plumbing
contractor on how to correct this. Do not plug the
relief valve outlet.
closed system.
Not enough or
no hot water
Water usage may have
exceeded the capacity
of the water heater.
Wait for the water heater to recover after an
abnormal demand.
Low gas pressure.
Check gas supply pressure and manifold pressure.
The gas control (thermostat)
may be set too low.
See the “Water Temperature Setting” of The Water
Heater section of this manual.
Leaking or open hot
water faucets.
Make sure all faucets are closed.
Check valve error codes.
“ON/OFF” switch turned off.
Blower unplugged.
Refer to gas valve error code table on page 30.
Turn “ON”.
Plug in. Verify power supply (120VAC).
Contact a qualified service technician.
Combustion Shutoff System
tripped
Water is too hot
The gas control (thermostat)
is set too high.
● See the “Water Temperature Setting” of The Water
Heater section of this manual.
Gas Control (Thermostat)
Defective.
● Contact a qualified service technician to replace the
gas control (thermostat).
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors or
other safety devices. Refer repairs to qualified service personnel.
31
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Gas Valve LED Codes
LED Status
Problem
Solution
1. Check that the earth ground connection is properly
connected.
2. Check that the ground conductor on the water
○ ○ ▼ A B C
● ○ ○ ● ○ ○
An open earth ground circuit to the
ignition system.
heater is properly connected.
1. Check proper connection of line
neutral and hot wires.
2. Check that the water heater is securely connected
○ ○ ▼ A B C
● ○ ● ○ ● ○
Wiring error or a high resistance to
earth ground.
to earth ground.
1. Pressure switch wiring is incorrect.
2. Replace pressure switch.
Pressure switch remained closed
longer
○ ○ ▼ A B C
● ○ ● ○ ○ ○
than 5 seconds after the call for
heat began.
Pressure switch remained open lon-
1. Pressure switch wiring is incorrect.
2. Pressure switch tubing is not connected correctly.
3. Air intake or exhaust obstructed.
1. Check that all wiring is correct and secure.
2. Replace hot surface ignitor.
1. Gas supply is off or too low to operate.
2. Hot surface ignitor not positioned
correctly.
○ ○ ▼ A B C
ger
● ○ ● ○ ○ ●
than 5 seconds after the combustion
blower was energized.
Error in the hot surface ignitor cir-
cuit.
○ ○ ▼ A B C
● ○ ● ○ ● ●
System in lockout.
○ ○ ▼ A B C
● ○ ○ ● ● ○
3. Low voltage to the water heater.
4. Electric polarity to unit is incorrect - test and cor-
rect.
5. Combustion shut-off device tripped, contact ser-
vice agency.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
○ ○ ▼ A B C
Problem in the gas valve driver cir-
cuit.
● ○ ○ ○ ● ●
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
○ ○ ▼ A B C
● ○ ● ● ● ○
Problem with the internal circuit.
Problem with the internal circuit.
○ ○ ▼ A B C
● ● ● ● ● ●
1. Replace gas control valve.
○ ○ ▼ A B C
Flame signal sensed out of
proper sequence.
● ○ ○ ○ ● ○
1. Replace gas control valve.
○ ○ ▼ A B C
ECO activated.
● ○ ○ ● ● ●
1. Press and release each of the buttons once.
2. Replace gas control valve.
1. Check that all wiring is correct and secure.
○ ○ ▼ A B C
One of the temperature adjust
buttons stuck closed.
● ○ ● ● ○ ○
○ ○ ▼ A B C
Water temperature sensor is either open
or short circuited.
● ○ ● ● ○ ●
2. Replace gas control valve.
1. Check for correct wiring to FV sensor.
2. Check for open circuits to FV sensor.
3. Replace FV sensor.
○ ○ ▼ A B C
● ○ ○ ● ○ ●
Unit shuts down.
1. FV sensor detected presence of flammable vapors.
2. Contact a service agency.
○ ○ ▼ A B C
● ○ ○ ○ ○ ●
Unit shuts down and in lockout.
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent connectors or other
safety devices. Refer repairs to qualified service personnel.
32
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Replacement Parts.
For 40 and 50 gallon models using natural or LP gas.
Instructions For Placing a Parts Order
All parts orders should include:
Refer to page 36.
The model and serial number of the
water heater from the rating plate.
CAUTION: For your safety, DO
NOT attempt repair of gas piping,
gas control (thermostat), burners,
vent connectors or other safety devices.
Refer repairs to qualified service
personnel.
Specify type of gas (natural or LP)
as marked on the rating plate.
Part description (as noted below) and
number of parts desired.
Rubber
Coupling
Use only original equipment
replacement parts.
Blower
Assembly
** Heat Trap Nipple
Flue baffle and hanger
*Burner Assembly Kit
** Heat
Trap
Nipple
Dip tube
Dip tube gasket
Anode rod
Temperature and pressure
relief valve
The kit provides extra speed clips
and tamper resistant screws.
** May differ in actual appearance.
Drain valve
Gas Control (Thermostat)
*Burner
*Burner supply tube
*Sight Glass
Flammable Vapor Sensor
Jacket Door
*Burner Access Door Gasket
*Burner orifice
*Igniter
*Burner Access Door Grommet
*Burner Access Door
33
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Notes:
34
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Notes:
35
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IF YOU NEED SERVICE
1. Should you have any questions about your new water heater, or if it requires adjustment, repair, or routine
maintenance, it is suggested that you first contact your installer, plumbing contractor or previously agreed upon service
agency. In the event the firm has moved, or is unavailable, refer to the telephone directory, commercial listings or local
utility for qualified service assistance.
2. Should your problem not be solved to your complete satisfaction, you should then contact the Manufacturer’s National
Service Department at the following address:
2600 Gunter Park Drive East
Montgomery, Alabama 36109-1413
Phone: 1-800-432-8373.
When contacting the manufacturer, the following information will be requested:
a. Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater.
b. Address where the water heater is located and physical location.
c. Name and address of installer and any service agency who performed service on the water heater.
d. Date of original installation and dates any service work was performed.
e. Details of the problems as you can best describe them.
f. List of people, with dates, who have been contacted regarding your problem.
Important Instructions for the Commonwealth of Massachusetts
mounted to the exterior of the building at a minimum height of eight (8) feet
above grade directly in line with the exhaust vent terminal for the horizon-
tally vented gas fueled heating appliance or equipment. The sign shall read,
in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY
BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".
4. INSPECTION. The state or local gas inspector of the side wall horizon-
tally vented gas fueled equipment shall not approve the installation unless,
upon inspection, the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1
through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not Required To
Be Vented" in the most current edition of NFPA 54 as adopted by the Board;
and
The Commonwealth of Massachusetts requires compliance with regula-
tion 5.08: Modifications to NFPA-54, Chapter 10 : 248 CMR 4.00
and 5.00 for installation of through – the – wall vented gas appliances as
follows:
(1) Revise NFPA-54 section 10.5.4.2 by adding a second exception as fol-
lows:
Existing chimneys shall be permitted to have their use continued when a gas
conversion burner is installed, and shall be equipped with a manually reset
device that will automatically shut off the gas to the burner in the event of a
sustained back-draft.
(2) Revise 10.8.3 by adding the following additional requirements:
(a) For all side wall horizontally vented gas fueled equipment installed in
every dwelling, building or structure used in whole or in part for residential
purposes, including those owned or operated by the Commonwealth and
where the side wall exhaust vent termination is less than seven (7) feet above
finished grade in the area of the venting, including but not limited to decks
and porches, the following requirements shall be satisfied:
2. Product Approved side wall horizontally vented gas fueled equipment in-
stalled in a room or structure separate from the dwelling, building or structure
used in whole or in part for residential purposes.
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time
of installation of the side wall horizontal vented gas fueled equipment, the
installing plumber or gasfitter shall observe that a hard wired carbon monox-
ide detector with an alarm and battery back-up is installed on the floor level
where the gas equipment is to be installed. In addition, the installing plumber
or gasfitter shall observe that a battery operated or hard wired carbon mon-
oxide detector with an alarm is installed on each additional level of the dwell-
ing, building or structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner to secure the
services of qualified licensed professionals for the installation of hard wired
carbon monoxide detectors
a. In the event that the side wall horizontally vented gas fueled equipment is
installed in a crawl space or an attic, the hard wired carbon monoxide detec-
tor with alarm and battery back-up may be installed on the next adjacent floor
level.
b. In the event that the requirements of this subdivision can not be met at the
time of completion of installation, the owner shall have a period of thirty (30)
days to comply with the above requirements; provided, however, that during
said thirty (30) day period, a battery operated carbon monoxide detector with
an alarm shall be installed.
(c) MANUFACTURER REqUIREMENTS - GAS EqUIPMENT VENTING
SYSTEM PROVIDED. When the manufacturer of Product Approved side
wall horizontally vented gas equipment provides a venting system design or
venting system components with the equipment, the instructions provided
by the manufacturer for installation of the equipment and the venting system
shall include:
1. Detailed instructions for the installation of the venting system design or
the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURER REqUIREMENTS - GAS EqUIPMENT VENTING
SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equipment does not provide the parts
for venting the flue gases, but identifies "special venting systems", the fol-
lowing requirements shall be satisfied by the manufacturer:
1. The referenced "special venting system" instructions shall be included with
the appliance or equipment installation instructions; and
2. The "special venting systems" shall be Product Approved by the Board,
and the instructions for that system shall include a parts list and detailed
installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall
horizontally vented gas fueled equipment, all venting instructions, all parts
lists for venting instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion of the installation.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon
monoxide detector as required in accordance with the above provisions shall
comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently
36
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