AP16882-2 (03/17)
!
FOR YOUR SAFETY!
— 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.
— WHAT TO DO IF YOU SMELL GAS
● DO NOT try to light any appliance.
● DO NOT touch any electrical switch; do not
use any phone in your building.
● Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
● If you cannot reach your gas supplier, call the
fire department.
● 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.
WARNING: If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
!
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.
!
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.
Use & Care Manual
With Installation Instructions for the Installer
Water Heaters
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WARNING: This water heater is not
suitable for use in manufactured (mobile) homes!
®
Residential Gas - FVIR Certified
Model on Right Shown With
Factory Installed Optional Digital Display
2
Care and Cleaning
Draining ................ 35
Maintenance ............. 35
Vent System Inspection .... 36
Burner Inspection ........ 36
Extended Shut-Down ......37
Safety Information
Safety Precautions ....... 3–6
LP Gas Models ........... 5
Installation Instructions
Location ................. 7
Water Supply Connections .. 9
Gas Supply .............. 11
Venting ...............12-19
Wiring Diagram ........20-21
Pipe Insulation ............22
Install User Display .....23-24
User Display Operation ..25-27
Heat Traps ...............28
Installation Checklist .......29
Potable/Space Heating .... 30
Operating Instructions
Lighting Instructions ...... 31
Water Temperature .....32-34
Troubleshooting Tips
Before You Call
For Service ........... 38-40
Customer Service
Parts List ................ 41
If You Need Service .......44
FOR YOUR RECORDS
Write the model and serial numbers here:
#
#
You can find them on a label on the appliance.
Staple sales slip or cancelled check here.
Proof of the original purchase date is needed to obtain service under
the warranty.
Inside you will find many helpful hints on how to use and maintain
your water heater properly. A little preventive care on your part can
save you time and money over the life of your water heater.
You’ll find many answers to common problems in the
Troubleshooting Guide. If you review the chart of Troubleshooting
Tips first, you may not need to call for service.
READ THIS MANUAL
Your safety and the safety of others are very important. There
are many important safety messages in this manual and on your
appliance. Always read and obey all safety messages.
!
This is the safety alert symbol. Recognize this symbol
as an indication of Important Safety Information!
This symbol alerts you to potential hazards that can
kill or hurt you and others.
All safety messages will follow the safety alert symbol and
either the word “DANGER”, “WARNING”, “CAUTION” or
“NOTICE”.
These words mean:
!
DANGER
An imminently hazardous situation
that will result in death or serious
injury.
!
WARNING
A potentially hazardous situation that
could result in death or serious injury
and/or damage to property.
!
CAUTION
A potentially hazardous situation that
may result in minor or moderate
injury.
NOTICE:
Attention is called to observe a
specified procedure or maintain
a specific condition.
READ THE SAFETY INFORMATION
3
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.
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
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.
DANGER!
INSTALL THE BLOWER ASSEMBLY AND PROPERLY VENT
THE WATER HEATER
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.
WARNING!
!
!
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.
W ARNING
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.
4
Time/Temperature Relationship in Scalds
Water Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 1
1
/2 to 2 minutes
130°F About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 1
1
/2 seconds
155°F About 1 second
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.
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 33 and 34 for more details.)
The temperature of the water in the heater can be
regulated by rotating the dial 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.
The illustration below details the approximate water
temperature for each mark on the Gas Control
(Thermostat) Temperature Dial.
D ANGER
!
HOT
Water temperature over 125°
can
cause severe burns
instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
F
!
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.
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
!
Valve Set
Point
Estimated
Temperature
Burns on Adult Skin
LOW
90°F ------------------------
●
98°F ------------------------
●
105°F ------------------------
●
113°F ------------------------
HOT
120°F More than 5 minutes
A
130°F About 30 seconds
B
140°F Less than 5 seconds
C
150°F About 1-1/2 seconds
VERY HOT
160°F About 1/2 second
!
DANGER: Hotter water
increases the potential for Hot
Water SCALDS.
NOTICE: Mixing valves are recommended for reducing
point of use water temperature by mixing hot and
cold water in branch water lines. It is recommended
that a mixing valve complying with the Standard for
Temperature Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be installed. See pages
31 & 33 for more details and contact a licensed plumber
or the local plumbing authority for further information.
5
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.
DANGER!
LIQUEFIED PETROLEUM (LP PROPANE OR BUTANE)
AND NATURAL GAS MODELS
● Water heaters utilizing LP gas are
different from natural gas models. A
natural gas water heater will not function
safely on LP gas and vice versa.
● No attempt should ever be made to
convert the water heater from natural
gas to LP gas. To avoid possible
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.
● 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.
● 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.
!
DANGER: If a gas leak is present or
suspected:
● DO NOT attempt to find the cause
yourself.
● DO NOT try to light any appliance.
● DO NOT touch any electrical switch.
● DO NOT use any phone in your building.
● 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.
● 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.
6
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.
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
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.
● 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.
SAFETY PRECAUTIONS
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
7
Combustion Air Inlet
Openings
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
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.
When such areas cannot be avoided it is
recommended that a suitable catch pan,
adequately drained, must be installed
under the water heater.
The water heater must be centered in
the catch pan.
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.
Catch pan kits are available from
the store where the water heater
was purchased, or any water heater
distributor.
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.
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.
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.
DO NOT obstruct or block the
Flammable Vapor Sensor.
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.
FVIR certified gas water heaters can
be installed on a residential garage
floor without the use of an 18" stand in
accordance with the National Fuel Gas
Code, NFPA 54, ANSI Z223.1 2006,
unless otherwise directed by State and
Local code requirements. The water heater
must be located so it is not subject to
physical damage, for example, by moving
vehicles, area flooding etc.
● We recommend this water heater be
installed in locations where the ambient
temperatures do not exceed 100°F
(38°C).
IMPORTANT: DO NOT install the
water heater in a location where it may
be subjected to ambient temperatures
exceeding 125°F (52°C).
● 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.)
● Long hot water lines should be insulated
to conserve water and energy.
● The water heater and water lines should
be protected from exposure to freezing
temperatures.
● DO NOT install the water heater in
bathrooms, bedrooms, any occupied
rooms normally kept closed, or in
unprotected outdoor areas.
● Minimum clearance from combustible
construction:
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.
● 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.
● 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
depth at least 3” in all directions.
The auxiliary catch pan
installation MUST conform
to local codes.
Diameter of
water heater
plus 2” min.
Max.
2.75”
!
WARNING: Combustible
construction refers to
adjacent walls and ceilings
and should not be confused
with combustible or
flammable products and
materials. Combustible
and/or flammable products
and materials should never
be stored in the vicinity of
this or any gas appliance.
Front Sides Rear Top
3”
(7.6 cm)
1”
(2.5 cm)
0”
(0 cm)
12”
(30.5 cm)
NOTICE: DO NOT allow
the flammable vapor sensor
to become submerged in
water. Make sure the catch
pan is properly drained.
Flammable
Vapor
Sensor
NOTICE: DO NOT allow
the catch pan to obstruct
the flammable vapor sensor.
8
Installing the water heater
Combustion and Ventilation Air
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.
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.
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.
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.
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.
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.
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.
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”.
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.
Corrosive Atmospheres
The air in beauty shops, dry cleaning
establishments, photo processing
labs, and storage areas for liquid and
powdered bleaches or swimming pool
chemicals often contain such halogenated
hydrocarbons.
An air supply containing halogenated
hydrocarbons may be safe to breathe,
but when it passes through a gas flame
corrosive elements are released that
will shorten the life of any gas burning
appliance.
Propellants from common spray cans
or gas leaks from A/C and refrigeration
equipment are highly corrosive after
passing through a flame.
The water heater warranty is voided when
failure of the heater is due to operation in
a corrosive atmosphere.
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
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.
9
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.
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.
Water Supply Connections
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.
NOTICE: The
National Fuel Gas
Code (NFGC)
mandates a manual
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.
Heat trap
6” minimum
Heat trap
6” minimum
Union
To gas supply
Sediment trap
Cap
Ground joint union
Drain Pan Pipe
to suitable drain.
Drain
valve
Relief valve discharge
line to suitable open
drain.
To cold water
supply
6” Air gap
Blower assembly
1/4” per foot maximum slope up or
down for horizontal venting.
Auxiliary catch pan
Union
Anode
Vent connector
Thermostatic gas valve
Jacket door
Manual gas shut-off
Temperature and pressure
relief valve
Shut-off valve
Shut-off
valve
Thermal expansion
tank (if required)
Combustion Air
Inlet Openings
Hot water outlet to
fixtures
Water Heater Jacket
Flammable Vapor Sensor
Typical Installation
Remote Control
Transformer Box
(Remote Control Models Only)
(Factory Installed Option)
10
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 Btuh rating of the relief valve must
equal or exceed the Btuh input of the water
heater as marked on its rating plate.
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.
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 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.
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.
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.
DO NOT allow the flammable vapor sensor
to become submerged in water.
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.
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.
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.
11
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.
Leak Testing
The water heater and its gas connections
must be leak tested at normal operating
pressures before it 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.
The factory connections to the gas
control (thermostat) should also be leak
tested after the water heater is placed in
operation.
High Altitude
Input rating of this water heater is
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 the elevation
listed on the rating plate attached to
the water heater without any change or
modification.
Refer to the Venting Information tables
on page 15 for maximum vent lengths.
Contact the local gas supplier for more
information.
Pressure Testing the Gas Supply System
The water heater and its manual gas
shut-off valve must be disconnected
from the gas supply piping system
during any pressure testing of that
system at pressures in excess of 3/8 psi
(10.5” w.c.) for natural gas, or 1/2 psi
(14” w.c.) for LP gas.
The water heater must be isolated from
the gas piping system by closing the
manual gas shut-off valve during any
pressure testing of the gas supply piping
at pressures equal to or less than 3/8 psi
(10.5” w.c.) for natural gas, or 1/2 psi
(14” w.c.) for LP gas.
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.
A ground joint union or ANSI design
certified semi-rigid or flexible gas
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.
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 the gas piping must be of the type
resistant to the action of LP gas. Use
compound sparingly on male threads
only.
Where a sediment trap is not
incorporated as part of the appliance,
a sediment trap shall be installed
downstream of the equipment shutoff
valve as close to the inlet of the
appliance as practical at the time of the
appliance installation. The sediment
trap shall be either a tee fitting with a
capped nipple in the bottom outlet or
other device recognized as an effective
sediment trap.
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.
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.
WARNING:
Never use an open
flame to test for gas
leaks, as property
damage, personal
injury, or death
could result.
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.
12
Installing the water heater
The water heater must be installed with the factory supplied blower assembly in
place.
Venting
This water heater is a Category III
appliance.
The water heater must be vented to the
outdoors as described in these instructions.
DO NOT connect this water heater to
an existing vent or chimney - it must
be vented separately from all other
appliances.
Multi-story venting is permitted in
accordance with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 (current
edition).
The unit may be vented horizontally
through a wall or vertically through the
roof.
Vent pipe runs must be adequately
supported along both vertical and
horizontal lengths.
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.
The support method used should isolate
the vent pipe from floor joists or other
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
contraction of the chosen venting material.
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.
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.
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.
Check the system for signs of sagging
or other stresses in the joints as a
result of misalignment of any
components in the system.
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.
NOTICE: The vent piping must be
connected to the blower assembly
using the rubber coupling and supplied
clamps. The vent pipe connections at
the blower assembly must be leak tested
with soap and water solution upon
initial startup. Repair any leaks before
allowing the water heater to operate.
DANGER: Failure to
install the blower assembly
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.
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.
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.
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.
Additional installation information for
The Commonwealth of Massachusetts is
located on the back page of this manual.
Blower Assembly Installation
Connect blower assembly with the
electrical connector. Attach Blower
Assembly to top pan using the six (6)
screws provided (See diagram to the left).
DO NOT overtighten screws to ensure
plastic does not crack.
Install rubber coupling (supplied in the
box with water heater) on blower housing
and secure it.
NOTICE: The Blower Assembly is
model specific and only the blower
assembly supplied should be used on
this water heater.
13
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted
US Installations
1
A - Clearance above grade, veranda, porch,
deck or balcony
12 in. (30 cm)
B - Clearance to window or door that may be
opened
4 ft. (1.2 m) below or to side of opening; 1 ft (300 m) above
opening
C - Clearance to permanently closed window *
D - Vertical clearance to ventilated soft
located above the terminal within a hori-
zontal distance of 2 feet (61 cm) from the
center line of the terminal
*
E - Clearance to unventilated soft *
F - Clearance to outside corner *
G - Clearance to inside corner *
H - Clearance to each side of centerline
extended above meter/regulator assembly
*
I - Clearance to service regulator vent outlet *
J - Clearance to nonmechanical air supply in-
let to building or the combustion air inlet
to any other appliance
4 ft. (1.2 m) below or to side of opening; 1 ft (30 cm) above
opening
K - Clearance to a mechanical air supply
inlet
3 ft. (91 cm) above if within 10 ft. (3 m) horizontally
L - Clearance above paved sidewalk or
paved driveway located on public prop-
erty
*
M - Clearance under veranda, porch, deck,
or balcony
*
1 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code
* For clearances not specied in ANSI Z223.1/ NFPA 54 the following statement shall be included:
"Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions"
D
V
V
E
FIXED
CLOSED
O
P
ERAB
LE
O
PERABLE
FIXED
CLOSED
v
v
B
L
F
C
B
v
v
v
X
B
B
B
A
J
B
I
H
X
v
M
K
v
G
A
14
NOTICE: This unit can be vented using only
the following recommended pipe material. Use
only 2- or 3-inch diameter pipe.
PVC (Schedule 40, ASTM D1785)
CPVC (Schedule 40, ASTM F441)
ABS (Schedule 40, ASTM D2661)
The fittings, other than the TERMINATION,
should be equivalent to the following:
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM D2661)
DO NOT mix ABS pipe and fittings with PVC
or CPVC pipe fittings. Note: It is acceptable to
interchange PVC and CPVC pipe and fittings.
Use of PVC cellular core (ASTM-F891), ABS
Schedule 40, DWV cellular core (ASTM –F628),
or Radel® (polyphenylsulfone) in non-metallic
venting systems is prohibited.
NOTE: This water heater may be installed in
attics provided ambient temperatures do not
exceed 125°F (52°C) and CPVC or ABS pipe
and fittings are used for the entire vent system.
Vent pipe materials must be chosen based
upon the ambient temperature where the water
heater is installed and the location within the vent
system. See chart below for material require-
ments.
Vent Pipe Materials
Ambient Installation Temperatures and Vent System Material Specications
Below 100°F (38°C) 100°F (38°C) to 125°F (52°C)
Models
0 to Max. ft.
(0 to Max. m)
Equivalent Vent|
System Length
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
10 ft. to Max.
(0 m to Max.)
Equivalent Vent
System Length
40 and 50 Gallon
PVC, CPVC or ABS CPVC or ABS PVC, CPVC or ABS
Installing the water heater
15
Condensate Management and Vent Risers
There is no condensate collection and disposal
required for Rheem water heaters under most
conditions. Installations where the vent run is
short or it runs through conditioned space in the
home, such as basements or interior walls, do not
typically cause condensation and will not require
any condensation disposal methods regardless of
vent pipe slope. Figure 1 shows the recommended
vent pipe slope of no less than 1/8 inch per foot
away from the water heater. Any condensation
in the venting system will drain toward the vent
termination. The blower pipe coupling features a
capped drain port which is not needed in this case.
There are vent piping configurations, when
combined with certain environmental conditions
that can produce enough condensate to require
collection and disposal. When a slope away
from the water heater cannot be achieved and
condensate handling is required in a horizontal
vent system, the vent pipe should be sloped toward
the water heater as shown in Figure 2.
• Remove drain port cap.
• Connect flexible condensate drain tube to the
blower drain port.
• Loop the drain tube so that it has a circular
trap. See Figure 3.
• Secure the top and bottom of the loop with
wire ties or plastic zip ties as shown.
• DO NOT restrict any portion of the circular
drain tube.
• Loop must be smooth and not collapse the
tube.
• Fill circular drain tube with water to make
sure combustion gases cannot vent into the
room.
• Condensation collected must be discharged
per local codes.
• DO NOT drain over public way or walkway.
• Refer to local codes for any condensate
requirements.
If the venting system is vertical and condensation
handling is required, then the blower coupling
drain port and tube must be used as described
previously. Any horizontal portion of the vent pipe
must slope toward the water heater at a minimum
of 1/8 inch per foot so a water trap is not created.
See Figures 4 & 5 as examples of a vertical instal-
lations with condensation removal tube and trap.
A vent riser is used when the vent termination can-
not be located above grade or snow lines. Power
vented water heaters installed with a vent riser
should have a slope toward the water heater if the
venting is long and passes through unconditioned
spaces. It is recommended that these installa-
tions have the condensate collection and disposal
method dened previously. Figure 6 shows a
condition where a vent riser is necessary to meet
the minimum clearance. Note that the vent pipe
must slope back to the water heater so that a water
trap is not created at the outside 90 degree elbow.
Slope
Away
Drain Port
with Cap
Figure 1
Figure 1
Slope Toward
Drain
Port
Trap
To Drain
Figure 2
Figure 2
From Drain
Port
Wire or
Zip Ties
To Drain
Water
Filled
Figure 3
Figure 3
Figure 4
Figure 4
Figure 5
Figure 5
Figure 6
Figure 6
NOTICE: Vent
riser ttings
and pipe must
be included in
the total vent
length calcula-
tion as described
in the manual.
CAUTION:
Make sure drain
port cap is
securely in place.
16
Maximum and Minimum Vent Lengths for Residential 40 & 50 Gallon Power
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.
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.
Number of 90°
elbows with Vent
Number of
45° Elbows
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
One (1) None 95’ 75’
One (1) One (1) 92.5’ 72.5’
Two (2) None 90’ 70’
Two (2) One (1) 87.5’ 67.5’
Three (3) None 85’ 65’
Three (3) One (1) 82.5’ 62.5’
Four (4) None 80’ 60’
Four (4) One (1) 77.5’ 57.5’
Five (5) None 75’ 55’
** 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 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 Venting information for 2” Vents*
* 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 2”vent pipe is one (1) foot of vertical pipe, one (1) 90°elbow,
and three (3) feet of horizontal pipe.
Number of 90°
elbows with Vent
Number of
45° Elbows
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
One (1) None 44’ 24’
One (1) One (1) 41’ 21’
Two (2) None 38’ 18’
Two (2) One (1) 35’ 15’
Three (3) None 32’ 12’
Installing the water heater
17
Installations requiring less than one (1) foot of vertical pipe before the rst elbow, subtract six
(6) feet from the maximum vent length.
Less than 1 ft.
vertical pipe
before rst
elbow
Minimum Vent Restrictor
Vent Pipe
Mesh
Vent Restrictor
Vent Terminal
Install the vent restrictor only at the minimum vent lengths listed on page 15 for the model
numbers listed below.
Additional Venting Requirements
Additional PVC Fittings Considerations
Do Not Use
Short Sweep 90° Elbow
Long Sweep 90° Elbow
Best
Good
Standard 90° Elbow
DO NOT use the vent restrictor for any other vent lengths or on tall models.
43VP40S(P)E2(-E)
PVP40S(P)E2(-E)
6GR40SPVE2
43VP50S(P)E2(-E)
PVP50S(P)E2(-E)
6GR50SPVE2
18
Additional Considerations
DO NOT install vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under
eaves, do not locate vent terminal on the side of a build ing
with prevailing winter winds.
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.)
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.
All painted surfaces should be primed to lessen the chance of
physical damage. Painted surfaces will require maintenance.
Insulate vent pipe exposed to cold conditions (attics, crawl
spaces, etc.) with inflammable material to help prevent
moisture from accumulating in vent pipe.
DO NOT extend exposed vent pipe outside of building.
If other vent terminal configurations are required, See "If You
Need Service" section.
If soffit vent is too
close, block off and
install new vent at
another location
Inside
corner
Caulk
Caulk
Caulk
6’ caulk
zone or to edge of window
etc., starting within 6 ft.
Rising moisture will
collect under eaves
4’
6’ caulk zone
2’ sq. sheet metal plate on
brick or masonary surface is recommended.
6’
WARNING: Moisture in the flue gas will condense as it
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
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 grade
level and above normal 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.
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.
Vent Terminal must be at least eighteen (18) inches from an
inside corner formed by two exterior walls.
4'
4'
Soffit vents
18"
4'
4'
4'
18"
Electric
meter
Inside
corner
3' above
if within 10'
Fresh
air
intake
12" (Above grade/snow level)
window or vent
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.
2 ft. sq. sheet metal plate on brick or
masonry surface is recommended.
Installing the water heater
19
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.
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.
Complete the vent pipe installation to the water
heater's vent connector fitting on the blower
outlet.
Support vertical or horizontal lengths as
previously mentioned.
Install adequate flashing where the vent pipe
passes through the roof.
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.
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.
Vertical Vent Termination Location
The location of the vent terminal depends on the
following minimum clearances and considerations
(see illustration):
Minimum twelve (12) inches above roof.
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.).
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.
Horizontal Vent Installation
Once the vent terminal location has been
determined, make a hole through the exterior wall
to accommodate the vent pipe. Vent pipe must exit
exterior wall horizontally only.
Insert a small length of vent pipe through the wall
and connect the coupling as shown to the left.
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.
Complete the rest of the vent pipe installation to the
water heater's vent connector fitting on the blower
outlet.
If necessary support horizontal run as previously
mentioned.
2' x 2' Sheet
Metal Shieldon
Brick or Masonry
Walls
Outside of
Building Wall
From
Water Heater
Vent Pipe
Pipe Coupling
Vent Terminal
with
1
/
2
" Mesh
Protective Screen
Inside
Short Piece of Vent Pipe
Min. 12" Above Roof
Min. 12" Above
Anticipated Snow
Level.
Max. 24" Above Roof
(Without Additional
Support)
Insert 1/2" Mesh Protective
Screen Inside Terminal Elbow
Vent Pipe
Through Roof
Elbow
Vent Terminal
20
All joints in the vent piping must be
properly sealed and the following materials
are recommended:
PVC materials should use ASTM D2564
grade cement.
CPVC materials should use ASTM F493
grade cement.
ABS materials should use ASTM D2235
grade cement.
Cleaner-Primer and Medium Body
Solvent Cement:
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.
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.
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.
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.
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.
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.
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.
Cementing Joints
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.
CAUTION:
For proper installation:
DO NOT use solvent cement
that has become curdled,
lumpy or thickened.
DO NOT thin solvent cement.
Observe shelf precautions
printed on the containers.
For applications below 32°F
use only low temperature
type solvent cement.
Appropriate solvent and
cleaner must be used for the
type of vent pipe used (PVC,
CPVC or ABS).
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.
Installing the water heater
21
Diagram Without Optional Electronic Display
1
H
H
N
N
PRESSURE
SWITCH
TEMPERATURE
SWITCH
SPARK
P1
P3
P2
E1
GND
PILOT
ELECTRODE
ASSY
PS
TS
TS1
TS2
FV
MOT
1
2
3
4
5
1
2
3
1
1
2
SCHEMATIC
CONNECTION DIAGRAM
WV 4460E CONTROL
N
H
G
120 VAC
INDUCER
3 x 2 CONNECTOR
BL
R
Y
W
BK
G
5
4
3
2
1
<
>
BK = BLACK
BL = BLUE
G = GREEN
R = RED
W = WHITE
Y = YELLOW
1
2
W
W
TS2
BK
BK
TS1
FV
1
2
3
120 NEUTRAL
GROUND
120 VAC
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
Wiring
If local codes permit, the water heater may be
connected to electric service with the power
cord provided (DO NOT use an extension
cord). A grounding receptacle is required.
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 white leads in the
heater control enclosure.
A knock-out hole is provided to permit use of
conduit or metal-clad cable connectors.
The maximum current draw is 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 heater internal wiring.
NOTICE: It is not recommended that this
unit be installed on a GFCI circuit.
22
Diagram With Optional Electronic Display
120 NEUTRAL
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous
operation. VERIFY PROPER OPERATION AFTER SERVICING!
Installing the water heater
23
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.
Hot and Cold Pipe Insulation Installation
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.
The manufacturer’s warranty does not cover
any damage or defect caused by installation,
attachment or use of 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.
The manufacturer disclaims any
responsibility for such loss or injury
resulting from the use of such unauthorized
devices.
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 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.
DO NOT cover the burner access door,
jacket door, gas control (thermostat)/gas
valve or pressure and temperature relief
valve.
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.
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.
WARNING: If
local codes require
external application
of insulation
blanket kits the
manufacturer’s
instructions
included with the
kit must be
carefully followed.
NOTICE: If pipe
insulation is used,
ensure that the
thickness does
not exceed ½”.
Insulation thicker
than ½” can
interfere with the
Blower Assembly
Dilution Air Holes.
Dilution Air
Intake
Typical vertical piping arrangement
Typical horizontal piping arrangement
For increased energy efficiency, this water heater has been supplied with a 2 3/8”
section of T&P insulation. Please install the insulation as shown below.
T&P Insulation Installation
Typical Side Connect T & P Arrangement.
Typical Top Connect T & P Arrangement.
Slip the insulation cover over the T&P
Valve through the center hole and align
the hole in the side with the opening of
the T&P Valve.
Ensure the T&P Valve opening is not
obstructed by the insulation.
Short Model
Blower Shown
Tall Model Blower Shown
24
Installing the Optional User Display
The following instructions apply only to water
heater models factory supplied with the electronic
display option.
IMPORTANT NOTICE: This electronic display
cannot be added to a water heater not supplied
from the factory with an electronic display.
Components supplied with user display models:
a. Optional Water Heater Mounting Bracket –
AP14752
b. 12 feet, 18 AWG Thermostat Wire – AP14820
c. Optional Mounting Tape – AP14819
d. Transformer Enclosure – AP14875
e. Screw, #8 x ½" Self Drilling Qty 2 AP5925GS
f. User Display – AP14697
Installation Instructions:
!
CAUTION: Turn the switch on the blower
to the “off” position and disconnect power to
the water heater before proceeding!
1. Locate the electrical connection for the
Transformer Enclosure on the top of the water
heater. This electrical connection features
a white 6-pin plug and white heat shrink.
(Blower may be different in appearance)
2. The Transformer Enclosure features a 6-pin
connection located on the circuit board inside
the enclosure. Attach the top pan harness
connector to this 6-pin connector in the correct
orientation.
3. Locate the two screw pilot holes on the water
heater top to attach the Transformer Enclosure
to the top pan. Position the enclosure so the
terminal strip opening is visible from the front
of the water heater. Secure enclosure to top
pan with screws provided in the User Display
Mounting Kit without pinching any wires.
NOTICE: DO NOT over tighten to avoid
cracking plastic enclosure.
4. Determine where the User Display will be
located. The display can be attached to the
water heater jacket with supplied Water Heater
Mounting Bracket or mounted remotely to a
wall via the wall plate up to 100 feet away
using 18 AWG solid copper thermostat wire.
Any installation location over 12 feet from the
water heater will require additional thermostat
wire. (Not supplied.)
5. If remote mounting, go to step 19.
6. Cut enough thermostat wire from the 12 feet
provided to connect the front mounted display
to the Transformer Enclosure located on the top
pan.
7. Strip ½” insulation from the 3 wires on both
ends. The wire provided is standard 3-wire with
the colors GREEN, RED and WHITE.
8. Connect one end of the wire to the Transformer
Enclosure spring terminal strip. From left to
right colors shall be GREEN – RED – WHITE.
Wires should easily insert into the terminal
strip. If required for wire insertion or removal,
use small flat blade screw driver to press the
tab located below each wire hole.
9. Remove two strips of Display Mounting Tape
and attach to the inside flanges of the Water
Heater Mounting Bracket.
Transformer
Pin Plug
Six (6) Pin Connection for
to Circuit Board
Mounting Holes for
Transformer
Display Mounting
Tape Strips
Water Heater
Mounting Braket
for Display
Flange of Mounting
Bracket
25
10. The Water Heater Mounting Bracket features a
wiring slot on the top flange and an opening for
the wire. Pass the thermostat wire though the
Water Heater Mounting Bracket opening.
11. Clean any dust or dirt from water heater jacket to
allow proper tape adhesion.
12. Remove tape backing and carefully attach to the
heater jacket above the Rheem logo. Allow the
thermostat wire to be positioned in the wire slot
located on the bracket top flange.
13. The User Display will be mounted to the plastic
Water Heater Mounting Bracket.
14. Separate wall plate from the User Display by
removing battery cover and carefully pull wall
plate from display.
NOTICE: The battery backup option is not
available on this model.
15. Replace battery cover.
16. Attach display wall plate to heater bracket using
the two #6 x ½” Type A screws provided in User
Display Mounting Kit. Wire should pass through
display wall plate opening.
17. GO TO STEP 26.
18. Remote mounting will not require the Display to
Heater Bracket or Display Mounting Tape. The
bracket may be kept for future use or recycled.
19. Choose mounting location and route thermostat
wire to this location.
20. Separate wall plate from the User Display by
removing battery cover and carefully pull wall
plate from display.
21. Replace battery cover.
22. Pass thermostat wire through wire hole in wall
plate.
23. Use mounting holes on wall plate to mark wall
hole locations.
24. Drill 3/16” holes and install wall anchors if
required.
25. Use two #6 x 1” Type A screws provided in the
User Display box to attach wall plate to surface.
26. Connect thermostat wire to wall plate as follows:
• Top Terminal - GREEN - Data Communication
• Middle Terminal - RED - Power
• Bottom Terminal - WHITE - Common
27. Attach Thermostat Display to wall plate.
!
ATTENTION: Leave peel off screen protector
on the User Display for customer to review
and remove.
28. Connect power to water heater
29. Turn on water heater and allow to heat.
30. Check thermostat display for proper display and
function.
User
Display
Battery
Cover
User Display
Mounting Bracket
Water Heater
Mounting Bracket
Your water heater includes a user display
for easy local or remote water heater
programming. The user display features:
• Water heater temperature setpoint control
• Large, clear, backlit display is easy to
read-even in the dark
• Displays relative available hot water
• Service needed indicator.
User Display Features
Caution: Risk of Scalding
Increases with Hotter Water
Est. Hot SERVICE
Water NEEDED
Very Hot
C
B
A
Hot
•
•
•
Low
Max Setting
Clear ModeDone Mute
Error
88
ON
VAC
Heat
Up/Down
Keys
Vacation Mode
Left/Right Keys
Heat
Indication
Hot Water
Availability
Error
Code
Scald
Warning
Setpoint Temperature
Max Setpoint
Temperature
26
After power on, all segments on the LCD will be displayed
for 2 seconds, (See Diagram A) followed by software
revision shown for 2 seconds (See Diagram B).
User Mode is entered after all required data is received
from the appliance when powered-up. The display shows
temperature setpoint, estimated amount of hot water and
maximum temperature setpoint. Heat symbol is turned on
when heating cycle is active. Scald warning starts flashing
whenever the adjusted setpoint exceeds the “Hot” setting
and becomes solid after 30 seconds of flashing.
Unlocking the User Display
The user display includes a display lock that will prevent
accidental adjustments to the water heater. To unlock the
display, hold down the UP and DOWN arrow buttons until
the lock icon flashes and disappears. The display can now
be adjusted. The display will automatically relock if no
button presses are detected within a 60 second period.
CAUTION: Risk of Scalding
Increases with Hotter Water
Heat
Very Hot
C
B
A
Hot
•
•
•
Low
Max Setting
SERVICE
NEEDED
Error
88
ON
VAC
HI DEMAND
Est. Hot
Water
Done Mute
Clear Mode
25
ON
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
Up/Down
Keys
Display Temperature Setting Limits
Display Temperature Setting
Water heater setpoint temperature is shown using vertical
bars on the display. The more bars shown the higher the
setpoint temperature. Use the UP or DOWN arrows to se-
lect the desired setpoint temperature. The top bar indicates
the water heater setpoint. The picture to the right shows a
setpoint of “A”.
Notice: When the temperature is set above "HOT", the
display will show the "Risk of Scalding Caution".
When the desired setpoint is shown on the display, press
the "Done" button below the display. The user display will
then lock to prevent accidental adjustments.
ON
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
CAUTION: Risk of Scalding
Increases with Hotter Water
Heat
Done
Mode
Done Button
Diagram A
Diagram B
Water Heater Optional User Display - Operation Instructions
27
Display Temperature Setting Limits
The user display setpoint temperature cannot exceed
maximum water heater valve setpoint temperature
at any time. Max Setting icon appears when the user
display setpoint exceeds the water heater gas valve
knob setpoint.
The water heater gas valve knob below is set to HOT
therefore the user display shows Hot as the maximum
available setpoint. The customer in this example has
chosen to set the temperature to Hot. When the user
display is set to the maximum available setpoint, the
Max Setting message will appear on the user display.
ON
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
Max Setting
ON
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
The water heater gas valve knob below is set to VERY
HOT therefore the user display shows Very Hot as
the maximum available setpoint. The customer in this
example has chosen to set the temperature between
Low and Hot. With this gas valve knob setting, the full
range of temperature setpoints is available at the user
display.
See Figure on left below.
User Display
User Display
Water Heater Gas Valve
Water Heater Gas Valve
28
Three bars shown on the user display are an estimate of hot water available
relative to the temperature setpoint. The chart below describes what each symbol
means.
Tank is full of hot water
Two thirds of the tank volume available
One third of the tank volume available
No hot water available
Est. Hot
Water
Est. Hot
Water
Est. Hot
Water
Est. Hot
Water
VAC
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
Mode
The user display features a vacation mode which
sets the water heater temperature to Low. The
user display toggles between On and Vacation
Modes when “Mode” key is pressed. Note that the
Estimated Hot Water symbol shows no hot water
available when in VAC mode. To return the water
heater to normal “ON” mode, unlock the display
and press the Mode button.
Vacation Mode
Estimated Hot Water
Error Display
When an error message is received from the water
heater, the "SERVICE NEEDED" icon flashes. See
the screen example below. Call your water heater
contractor.
ON
Est. Hot
Water
Very Hot
C
B
A
Hot
•
•
•
Low
Service
Needed
Water Heater Optional User Display - Operation Instructions
29
Installing the water heater continued
DO
❑ DO check inlet gas pressure to ensure
that it is within the range specified on
the rating plate.
❑ DO provide adequate air for
combustion and ventilation as
discussed in the Use and Care Manual
and the National Fuel Gas Code.
❑ DO maintain proper clearances to
combustibles as specified on the rating
plate.
❑ DO allow enough time for joint
cement vapors to dissipate BEFORE
applying power to the water heater.
❑ DO ensure that the venting system
complies with the guidelines found in
the Use and Care Manual and National
Fuel Gas Code.
❑ DO contact a qualified service
technician if the main burner will
not stay lit. The burner chamber is
designed to be sealed utilizing a gasket
and tamper resistant screws.
DON’T
❑ DON’T block or restrict Combustion
Air Inlet Openings or the Flammable
Vapor Sensor located around the lower
portion of the water heater jacket.
❑ DON’T block or restrict the Blower
Assembly Dilution Air holes (see
diagram to the left).
❑ DON’T remove the Burner Access
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.
❑ DON’T install this water heater where
standing water may occur. The base
of the water heater is meant to be
mounted on a dry surface.
❑ DON’T allow cleaners, solvents, or
other materials to come into contact
with the Flammable Vapor Sensor.
❑ DON’T operate the water heater if
the sight glass or burner access door
grommet is damaged or broken (See
below).
During Installation of this water heater...........
Heat Traps
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 41.
Sight Glass
Flammable
Vapor Sensor
Burner Access
Door Grommet
Location of Dilution Air Holes
Short Models
Dilution Air Inlet
Tall Models
30
Installation Checklist
A. Water Heater Location
B. Water Supply
C. Gas Supply
D. Relief Valve
E. Venting
❑ Close to area of vent.
❑ Indoors and protected from freezing
temperatures.
❑ Proper clearance from combustible surfaces
observed and water heater not installed on
carpeted floor.
❑ Sufficient fresh air supply for proper
operation of water heater.
❑ Air supply free of corrosive elements and
flammable vapors.
❑ Provisions made to protect area from water
damage.
❑ Sufficient room to service heater.
❑ Combustible materials, such as clothing,
cleaning materials, rags, etc. clear of the base
of the heater.
❑ Clearances of 1” from combustion air inlet
openings observed
❑ Flammable vapor sensor is not blocked.
❑ Water heater completely filled with water.
❑ Air purged from water heater and piping.
❑ Water connections tight and free of leaks.
❑ Gas line equipped with shut-off valve, union
and sediment trap.
❑ The required inlet gas pressure to the water
heater is shown on the water heater rating
plate.
❑ Soap and water solution used to check all
connections and fittings for possible gas leak.
❑ Gas Company inspected installation (if
required).
❑ Temperature and Pressure Relief Valve
properly installed and discharge line run to
open drain.
❑ Discharge line protected from freezing.
❑ Heater vented separately from all other
appliances.
❑ Flue baffle properly hung in top of heater’s
flue.
❑ Blower assembly properly installed.
❑ Proper materials and techniques used in vent
assembly.
❑ Vent pipe properly secured to blower housing.
❑ Vent pipe supported at required intervals.
❑ Appropriate minimum clearances observed.
❑ Precautions taken to prevent moisture damage
around vent termination.
❑ Vapors from vent pipe cement and primer
have dissipated prior to applying electrical
power.
F. Wiring
❑ Correct power supply (120 V).
❑ Electrical connections tight.
❑ Heater properly grounded and proper polarity
observed.
31
Tee fitting for vertical hot
water supply lines.
Hot water
supply to
house
From HOT
outlet on
water heater
Hot water
supply to
heating
unit
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.
Tee fitting for horizontal hot
water supply lines.
From HOT
outlet on
water heater
Hot water
supply to
house
Hot water supply
to heating unit
Combination Potable Water and Space Heating Application
Tee fitting must be installed as shown.
This ensures that any air in the water lines
will be purged through the domestic water
faucets and showers.
DANGER: When this system
requires water for space heating at
elevated temperatures (above 125°F
[52°C.]), a mixing valve complying with
the Standard for Temperature Actuated
Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 must
be installed in the hot water supply line
to the house in order to reduce the scald
hazard potential.
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: Suitable for (potable) water
heating and space heating applications.
DO NOT use for space heating
application only.
DANGER: If this water heater is
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.
Notice: 50' - 0" maximum distance
from water heater to fan coil
(developed length) is required for
Massachusetts State.
Typical Piping Diagram for Combination Potable/Space Heating Installation
Spring loaded check valve in heating unit
hot water supply line and cold water return
line (not supplied with water heater)
NOTICE: 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.
All water piping shall be insulated in
accordance with Local and State Energy
Code.
Isolation valve in cold
water return line from
heating unit (not supplied
with water heater)
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.
Temperature and pressure relief
valve discharge line
Air Handler
Drain valve
(not supplied with water heater)
Hot water
to space heater
Temperature and Pressure Relief
Valve, tie to location approved by
local code
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
Isolation valve in hot water supply line
to heating unit (not supplied with water
heater)
3/4" cold water supply
3/4" Tempered
domestic hot water
supply to house.
Gas line to water heater
6” Air Gap
Combustion Air Inlet
Openings
2 Gallon Thermal
Expansion Tank
(if required-not
supplied with
water heater)
Air vent
Heat Trap
6” Min.
3/4" Shut-Off Valve (Typ.)
3/4" Check Valve with 1/8" Hole
Pressure Gauge
3/4" Shut-Off Valve (Typ.)
3/4" Shut-
Off Valve
(Typ.)
Hot water coil
All bronze pump.
Check valve
internal in pump.
Air bleed valve.
Water Sample Tap.
T
FAN
ON
OFF
HEAT
COOL
To HVAC Unit.
Electronically controlled pump timer.
Activates every 6 hours for 60 seconds.
Wire to bronze pump.
3/4" HWS & HWR
to Heating Coil.
Minimum of 2'-0" developed length
of 3/4" pipe.
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
Gas Fired
Water Heater
Gas Direct Vent discharge must comply
with Local and State Codes
Vacuum Relief Valve
(Not Supplied)
If required, install per local codes
and valve manufacturer’s
instructions.
1
2
0
°
F
t
o
1
3
0
F°
1
4
0
°
F
Gas Control (Thermostat)
32
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
OPERATING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
If you cannot reach your gas supplier,
call the re department.
C.
DO NOT use this appliance if any part has
been under water. Immediately call a
qualied installer or service agency to
replace a ooded water heater. Do not
attempt to repair the unit! It must be
replaced!
Use only your hand to turn the gas control
knob. Never use tools. If the knob will
not turn by hand, do not try to repair it,
call a qualied service technician. Force
or attempted repair may result in re or
explosion.
D.
10.
11.
12.
Stop! Read the safety information above
on this label.
Slide the “ON/OFF” switch located on the
gas valve to the “OFF” Position.
Toggle the “ON/OFF” switch located on
the blower assembly to the “OFF”
position.
Turn o all electric power to the
appliance.
Set the valve thermostat dial to “LOW”.
This appliance has an automatic spark
ignition system. DO NOT attempt to light
the pilot by hand.
Wait ve (5) minutes to clear out any gas.
If you smell gas, stop! Follow “B’ in the
safety information above on the label. If
you do not smell gas, go to the next step.
Turn on electric power to the appliance.
Toggle the ”ON/OFF” switch located on
the blower assembly to the “ON” position.
1.
3.
2.
1.
2.
4.
5.
6.
7.
8.
9.
Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppliers
instructions.
DO NOT try to light any appliance.
DO NOT touch any electric switch;
DO NOT use any phone in your building.
WHAT TO DO IF YOU SMELL GAS
This appliance is equipped with an
ignition device which automatically lights
the pilot. DO NOT try to light the pilot by
hand.
A.
BEFORE PUTTING THIS APPLIANCE INTO
SERVICE - Smell all around the appliance
area for gas. Be sure to smell next to the
oor because some gas is heavier than air
and will settle on the oor.
B.
Slide the “ON/OFF” switch located on
the gas valve to the “ON” position.
Set the thermostat dial to the desired
setting.
If the appliance will not operate,
follow the instructions “TO TURN OFF
GAS TO APPLIANCE” and call your
service technician or gas supplier.
Turn o all electric power to the appliance if service is to be performed.
Close manual gas shut-o valve.
WARNING: If you do not follow these instructions and use the Use & Care
Manual instructions exactly, a re or explosion may result causing property damage,
personal injury or loss of life.
33
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 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.
DO NOT allow combustible materials such as
newspaper, rags or mops to accumulate near
water heater.
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.
NOTICE: Flammable vapors can be drawn by air
currents from surrounding areas to the 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 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.
!
DANGER:
Hotter water
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.
Water Temperature Setting
The temperature of the water in the water
heater can be regulated by turning the knob
on the front of the gas control (thermostat).
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
temperature setting, the greater the savings
in energy and operating costs.
To comply with safety regulations, the
gas control (thermostat) was set at 120°F
before the water heater was shipped from the
factory. The recommended starting point
temperature is 120°F.
Water temperatures above 125°F 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.
Mixing valves are recommended for
reducing point of use water temperature by
mixing hot and cold water in branch water
lines. It is recommended that a mixing
valve complying with the Standard for
Temperature Actuated Mixing Valves for
Hot Water Distribution Systems, ASSE
1017 be installed. See page 4 for more
details and contact a licensed plumber or
the local plumbing authority for further
information.
The chart on the next page may be used
as a guide in determining the proper water
temperature for your home.
Operating Procedure
This heater is equipped with an electronically
lit pilot to light the main burner. The pilot is
automatically lit each time there is a demand
for heating the water. On initial start-up,
it is recommended that the outer door be
removed (leave inner door in place for safety)
to determine if the pilot and main burner are
operating properly.
Once filled with water, it is necessary to plug
the power cord in and make sure the “ON/
OFF” switch located on the blower assembly
is in the “ON” position and the gas control
switch is in the “ON” position. The blower
will start and within seconds the pilot will light
followed by the main burner. 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 into a lock-out. A warning light
will alert the user of this lock-out condition.
If this happens, refer to “Troubleshooting
Guide.”
34
The following is additional information which
aid in determining a safe working temperature to
meet each household need.
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. If an adjust-
ment to the water temperature is preferred, then
refer to the Water Heater User Display – Opera-
tion Instructions for instruction on adjusting
the local and remote user display temperature
setpoints.
A condition known as “stacking” or “layering”
can occur when a series of short and frequent hot
water draws are taken. 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.
Also, always supervise young children or others
who are incapacitated.
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.
The gas control (thermostat) is also equipped
with a gas shut off device that will shut off the
gas supply to the burner if the water heater
exceeds normal operating temperatures. Refer to
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
If the water heater has been subjected to re,
ood or physical damage, turn off the manual
gas control (shut-off) valve and do not operate
the water heater again until it has been checked
by a qualied service technician.
NOTICE: DO NOT use this appli-
ance if any part has been under water.
Immediately call a qualied installer
or service agency to replace a ooded
water heater. DO NOT attempt to re-
pair the unit! It must be replaced.
Time/Temperature Relationship in Scalds
Water Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 1
1
/2 to 2 minutes
130°F About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 1
1
/2 seconds
155°F About 1 second
Table courtesy of Shriners Burn Institute
90° F
113°F
98°F
105°F
120°F
130°F
140°F
150°F
160°F
Water Temperature Setting…
Operating the water heater
35
Sequence of Operation…
1. During initial start-up or a call for heat, the control
will verify the vacuum switch is open.
2. 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).
3. 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.
4. The control will then proceed through a sequence of
self-diagnostics before initiating a trial for ignition.
5. During the trial for ignition, the pilot will spark in
an attempt to light the pilot. Once the pilot flame is
established, the main gas valve will open allowing
gas to flow to the main burner.
6. The main burner and pilot will remain lit
throughout the heat cycle until the water
temperature setting is reached.
7. Once the water temperature setting is reached, the
control will close the main gas valve and pilot valve
which will extinguish both the main burner and
pilot burner flames.
8. 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.
9. 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.
This water heater is equipped with a flammable vapor
sensor that is monitored continuously by the electronic
control in all modes of operation.
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.
The following is a list of materials that will cause the
Flammable Vapor Sensor to shut down the water heater.
Vapors of Gasoline.
Vapors of certain flammable paints, stains, and
thinners.
Vapors of vent pipe Cement & Solvents.
Bleach (direct contact with flammable vapor sensor).
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 “WARNING” on page 3 for additional
information.
36
Care and cleaning of the water heater
Draining the Water Heater
!
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.
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.
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
Properly maintained, your water heater will
provide years of dependable trouble-free
service.
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.
It is suggested that a routine preventative
maintenance program be established and
followed by the user.
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.
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.
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.
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 (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.
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.
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.
Make sure the cold water supply is turned
off before removing anode rod.
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.
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 temperatures and
other potentially hazardous conditions.
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.
!
DANGER: Hotter water
increases the potential for
Hot Water Scalds.
Location of Dilution Air Holes
Short Models
Dilution Air Inlet
Tall Models
37
Housekeeping
Visually inspect the pilot.
To ensure sufficient ventilation
and combustion air supply, proper
clearances must be maintained.
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.
DO NOT obstruct or block the
Flammable Vapor Sensor. The sensor
does not require any maintenance or
cleaning.
DO NOT expose to cleaning agents.
!
DANGER:
Combustible
materials, such as
clothing, cleaning
materials, or
flammable liquids,
etc., must not be
placed against or
next to the water
heater.
Burner Inspection
Visually inspect the pilot flame and
main burner annually.
Through the sight glass, inspect
the pilot and burner lighting. If any
unusual pilot or burner operation is
noted, the water heater should be shut
off until qualified service assistance
can be obtained.
!
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.
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
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.
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.
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.
Location of Dilution Air Holes
Short Models
Dilution Air Inlet
Tall Models
38
Vacation and Extended Shut-Down
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
to conserve energy and prevent a build-up
of dangerous hydrogen gas.
The water heater and piping should be
drained if they might be subjected to
freezing temperatures.
After a long shut-down period, the
water heater’s operation and controls
should be checked by qualified service
personnel. Make certain the water heater
is completely filled again before placing it
in operation.
NOTICE: Refer to the
Hydrogen Gas Caution in
the Operating Instructions.
Anode Rod
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.
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.
Care and cleaning of the water heater
39
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.
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.
Problem Possible Causes What To Do
Condensation
This usually happens when a new
water heater is lled for the rst
time.
This is normal. After the water in the tank
warmsup, the condensation will disappear. If,
however, the condition persists, examine the
piping and ttings 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 ame or
soot
Scale on top of the burner.
Contact a qualied service technician to remove
scale.
Flue or Combustion air inlet
openings are restricted.
Remove obstruction or debris from ue or com-
bustion 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 the
main burner
Air in gas line.
Contact a qualied service technician to purge
the air from the gas line.
Blocked Exhaust.
Contact a qualied service technician to evaluate
vent pipe for blockage
Pressure Switch.
Make sure the pressure switch hose is not
"kinked".
Wire Connection not fully se-
cured.
Contact a qualied service technician to conrm
wire connections.
Combustion Shut-off Device
tripped.
Combustion shut-off device should be inspected
by a qualied service technician.
Gas Control Problem.
Contact a qualied service technician.
Main burner does not
stay lit
Combustion Shutoff Device
Tripped.
The combustion shutoff device should be
inspected by a qualied service technician.
40
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.
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.
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.
Problem Possible Causes What To Do
Rumbling noise
Scale and sediment in tank.
Clean tank.
Relief valve pro-
ducing popping
noise or draining
Pressure build up caused by
thermal expansion to a closed
system.
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.
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 abnor-
mal 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.
Refer to gas valve error code table on page 40.
“ON/OFF” switch turned off.
Turn “ON”.
Blower unplugged.
Plug in. Verify power supply (120VAC).
Combustion Shutoff System
tripped
Contact a qualied service technician.
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 qualied service technician to replace the
gas control (thermostat).
41
Gas Valve LED Codes
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.
LCD CODE
For Optional
Display
GAS VALVE
LED
STATUS/PROBLEM PROBABLE CAUSE SOLUTION
None
Short ash once
every four seconds
IDLE (no call for heat,
no fault conditions)
Temperature setpoint achieved and
burner is off
No solution required
None
“Heartbeat”, alter-
nates bright/dim
Call For Heat (no fault
conditions)
Water temperature is below setpoint and
burner is on
No solution required
12
One Flash, three
second pause
Low ame signal
(control continues to
operate)
Pilot tube restriction, carbon buildup
on electrode, pilot wire damage or gas
supply
1. Gas supply pressure is low
2. Low voltage supply
3. Pilot replacement
44
Two Flash, three
second pause.
Pressure switch failed
closed
Pressure switch tube blockage or faulty
pressure switch.
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Replace tube or clear blockage.
46
Three Flash, three
second pause
Pressure switch failed
open.
Vent blockage or improper installation,
switch tube blockage, faulty switch,
blower improper operation or tempera-
ture switch open
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
31
Four Flash, three
second pause
TCO limit lockout
Thermal well fault, gas control fault or
tank is not lled with water
1. Reset valve and check for proper
valve cycling
2. Make sure tank is full of water
14
Five Flash, three
second pause
Flame out of sequence
Pilot or burner valve has failed open 1. Replace gas valve control
11
Six-One Flash,
three second pause
Failed trial for ignition
Insufcient gas supply, unstable pilot,
carbon buildup on electrode or wire/pilot
tube damage
1. Check gas supply
2. Replace pilot
45
Six-Two Flash,
three second pause
Recycle limit - PS/limit
opened
Vent blockage or improper installation,
switch tube blockage, faulty switch,
blower improper operation, blower tem-
perature switch open or excessive wind
at vent termination
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
6. Check for vent termination compli-
ance as stated in this manual
13
Six-Three Flash,
three second pause
Recycle limit - ame
lost
Pilot tube restriction, low gas supply
pressure, carbon buildup on electrode,
wire/pilot tube damage or combustion air
port blockage
1. Gas supply pressure is low
2. Jacket air holes obstructed
3. Pilot replacement
14
Six-Four Flash,
three second pause
Soft Lockout - ame
out of sequence sensed
Valve stuck in open position 1. Replace gas valve control
10
Six - Five Flash,
three second pause
Failed Ignition Lockout
Insufcient gas supply , pilot damage or
gas valve damage
1. Check gas supply
2. Replace pilot
3. Replace gas valve
47
Seven Flash, three
second pause
Flammable vapor sen-
sor lockout
Gasoline or other ammable gas was
detected near the appliance or the sensor
has failed
1. Verify no gasoline or ammable
vapors are present
2. Reset control using ON/OFF switch
on the gas control valve
3. Replace the ammable vapor sensor
49
Eight-One Flash,
three second pause
FVS fault detected
Flammable vapor sensor resistance is out
of range, wiring to FV sensor is faulty or
control is faulty
1. Replace FV sensor
2. Replace FV sensor wiring
3. Replace gas control valve
89
Eight-Two Flash,
three second pause
Temperature sensor
fault detected
Thermal well fault
1. Check thermal well wiring con-
nection
2. Replace thermal well
15
Eight-Three Flash,
three second pause
Electronics fault de-
tected
Thermal well fault or gas control fault
1. Replace gas control valve
2. Replace thermal well
93
Eight-Four Flash,
three second pause
Valve fault detected
Gas control valve needs to be reset or has
been damaged
1. Cycle power to gas control valve
2. Replace gas control valve
42
Replacement Parts
For 40 and 50 gallon models using natural or LP gas.
Instructions For Placing a Parts Order
All parts orders should include:
The model and serial number of the
water heater from the rating plate.
Specify type of gas (natural or LP) as
marked on the rating plate.
Part description (as noted below) and
number of parts desired.
Refer to page 44.
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.
Use only original equipment
replacement parts.
Blower
Assembly
Flue baffle and hanger
Anode rod
** Heat Trap Nipple
** Heat
Trap
Nipple
Dip tube
Dip tube gasket
Drain valve
Temperature and pressure relief
valve
Gas Control (Thermostat)
*Igniter
*Burner supply tube
*Burner
Jacket Door
*Burner Access Door Grommet
*Sight Glass
*Burner Access Door
*Burner Access Door Gasket
*Burner orifice
*Burner Assembly Kit
The kit provides extra speed clips
and tamper resistant screws.
** May differ in actual appearance.
Flammable Vapor Sensor
Rubber
Coupling
Gas Control Shank
(Appearance may differ)
*Combustion Shut-off Device (enlarged view)
Located inside the combustion chamber.
43
Notes:
44
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:
1241 Carwood Court
Montgomery, Alabama 36117
Phone: 1-866-279-4566
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.
The Commonwealth of Massachusetts requires compliance with regulation
5.08: Modications 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
nished grade in the area of the venting, including but not limited to decks
and porches, the following requirements shall be satised:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time
of installation of the side wall horizontal vented gas fueled equipment, the
installing plumber or gastter shall observe that a hard wired carbon monox-
ide detector with an alarm and battery back-up is installed on the oor level
where the gas equipment is to be installed. In addition, the installing plumber
or gastter shall observe that a battery operated or hard wired carbon monox-
ide 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 qualied licensed professionals for the installation of hard wired
carbon monoxide detectors
a. In the event that the side wall horizontally vented gas fueled equipment
is installed in a crawl space or an attic, the hard wired carbon monoxide
detector with alarm and battery back-up may be installed on the next adjacent
oor 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.
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 certied.
3. SIGNAGE. A metal or plastic identication plate shall be permanently
mounted to the exterior of the building at a minimum height of eight (8) feet
above grade directly in line with the exhaust vent terminal for the horizontal-
ly 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
2. Product Approved side wall horizontally vented gas fueled equipment
installed in a room or structure separate from the dwelling, building or struc-
ture used in whole or in part for residential purposes.
(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 VENT-
ING SYSTEM NOT PROVIDED. When the manufacturer of a Product Ap-
proved side wall horizontally vented gas fueled equipment does not provide
the parts for venting the ue gases, but identies "special venting systems",
the following requirements shall be satised 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.
3 After NFPA-54 section 10.10.4.2 add a new section 10.10.4.3 as follows:
When more than four gas appliances are to be vented through a common
gas vent or common horizontal vent manifold, a plan of the proposed vent
installation shall be submitted to the Inspector and the serving gas supplier
for review and approval.
Important Instructions for the Commonwealth of Massachusetts
IF YOU NEED SERVICE
