To review or adjust tempture
Step 1. Press the two temperature adjust buttons at the same time for 1 second.
Step 2. To adjust, press COOLER or HOTTER button for desired temperature.
EMMERSON
SCALD RISK INCREASES
WITH HOTTER WATER
AP15411-1 (10/12)
!
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.
Residential 38 and 48 Gallon
Use & Care Manual
With Installation Instructions for the Installer
Water Heaters
Printed in USA
!
Warning: This water heater is not suitable
for use in manufactured (mobile) homes!
Residential Gas - FVIR Certified
High Efciency Condensing Power Direct Vent
2
Care and Cleaning
Draining ............... 31
Maintenance ............ 31
Burner Inspection ....... 32
Vent System Inspection .. 32
Extended Shut-Down .....32
Safety Information
Safety Precautions ...... 3–6
LP Gas Models ........... 5
Installation Instructions
Location ................. 7
Water Supply
Connections ............. 9
Condensate
Management ............ 10
Gas Supply ..............11
Vent and Combustion
Air Inlet .............12-20
Wiring Diagram ..........21
Pipe Insulation ........22,23
Heat Traps ..............23
Installation Checklist .....25
Potable/Space Heating ... 26
Operating Instructions
Lighting Instructions .... 27
Water Temperature ... 28, 29
Troubleshooting Tips
Before You Call
For Service .......... 33, 34
Gas Control LED Error
Codes ...................35
Customer Service
Parts List ............... 36
Alternate Vent Termination
Instructions .......... 37, 38
If You Need Service .......40
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
READ THE SAFETY INFORMATION
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.
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 properly vent the water heater as outlined in the Vent and Combustion Air-
Inlet 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 both the vent and combustion air-inlet
systems are properly installed. Be sure to inspect both the vent and the combustion air-
inlet for proper installation at initial start-up; and at least periodically thereafter. Refer
to the Care and Cleaning section of this manual for more information regarding vent and
combustion air-inlet system inspection.
DANGER!
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 Control LED Error Codes”
Section of this manual for a list of error codes.
4
NOTICE: Mixing valves are available for reducing
point of use water temperature by mixing hot and
cold water in branch water lines. Contact a licensed
plumber or the local plumbing authority for further
information.
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 28 and 29 for more details.)
The temperature of the water in the heater can be
regulated by pressing
the "COOLER" or "HOTTER"
arrow buttons on the front of the gas control
(thermostat). To comply with safety regulations
the gas control (thermostat) was set at its lowest
setting before the water heater was shipped from the
factory.
The illustration below shows the approximate water
temperature for each LED Indicator on the Gas
Control (Thermostat) Temperature Display.
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
!
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 (thermostat). 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
!
VAC
A B C
HOTTERCOOLER
SCALDING RISK INCREASES
WITH HOTTER WATER
Temperature Setting
Display
VA C ▲ A B C
Burns on Adult Skin
VAC = approx. 70°F
● ○ ○ ○ ○ ○
--------------------
• = approx. 110°F
○ ● ○ ○ ○ ○
More than 5 minutes
Both
• and ▲ = approx. 115°F
○ ● ● ○ ○ ○
More than 5 minutes
▲= approx. 120°F
○ ○ ● ○ ○ ○
More than 5 minutes
Both ▲and A= approx. 125°F
○ ○ ● ● ○ ○
1-1/2 to 2 minutes
A = approx. 130°F
○ ○ ○ ● ○ ○
About 30 seconds
Both A and B = approx. 135°F
○ ○ ○ ● ● ○
About 10 seconds
B = approx. 140°F
○ ○ ○ ○ ● ○
Less than 5 seconds
Both B and C = approx. 145°F
○ ○ ○ ○ ● ●
Less than 3 seconds
C = approx. 150°F
○ ○ ○ ○ ○ ●
About 1-1/2 seconds
C-Flashing = approx. 160°F
○ ○ ○ ○ ○ ●
About 1/2 seconds
!
DANGER: Hotter
water increases the
potential for Hot Water
SCALDS.
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.
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
IMPORTANT
Carefully inspect the water heater for damage before proceeding with the installation.
If you find damage to the condensate trap, PVC pipes, gas control (thermostat) or the
blower assembly, DO NOT install or attempt any repair to the water heater. Contact the
manufacturer as detailed under "IF YOU NEED SERVICE" section of this manual.
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.
7
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.
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 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 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-inch stand in
accordance with the National Fuel Gas
Code, NFPA 54, ANSI Z223.1, 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.
● DO NOT install the water heater in
a location where it may be subjected
to ambient temperatures exceeding
125°F.
● The water heater should be installed so
as to minimize the length of vent and
combustion air-inlet pipe(s) and the
number of vent and combination air-
inlet connection fittings required.
● Hot water lines should be insulated to
conserve water and energy.
● The water heater should be installed
close to a condensate drain.
● The water heater, condensate lines, and
water lines should be protected from
exposure to freezing temperatures.
● DO NOT install this water heater
outdoors.
● Minimum clearance from combustible
construction:
* "Front" clearance dimension is measured
from front of control to the closet door.
** "Top" clearance dimension is measured
from the top pan of the water heater to the
ceiling.
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* Side Rear Top**
0" 0" 0” 12”
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
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 water heater is due to
operation in a corrosive atmosphere.
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
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 on right). 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.
9
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.
IMPORTANT: It is recommended that
the hot and cold water piping have a
minimum vertical height of 10" from
the top of the water heater before the
transition into any elbow. This vertical
height is needed in order to provide
adequate clearance for top cap installation
and removal.
To gain access to the hot and cold water
connections on water heater remove the
two (2) screws that secure the top cap
to the water heater then pull the top cap
upward and off the water heater. See
illustration of top cap and screws on
pages 23 & 36.
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.
Typical Installation
Heat trap
6” minimum
recommended
Heat trap
6” minimum
recommended
Union
(Recommended)
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
1/8” per foot minimum
slope upward for horizontal
venting.
Auxiliary catch pan
Union
(Recommended)
Air inlet connector
Manual gas shut-off
Gas Control (Thermostat)
Temperature and pressure
(T&P) relief valve
Shut-off
valve
Thermal expansion
tank (if required)
Hot water outlet to
fixtures
Water Heater Jacket
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.
Flammable Vapor Sensor
On/Off
switch
Shut-off
valve
Vent
Air inlet
Vacuum Relief Valve
Condensate line
to suitable drain
Condensate Trap
*10" min.
* Typical for
both sides
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.
Condensate Management
This water heater generates condensate
and requires a drain to be located in close
proximity to allow condensate to drain
safely. The drain line and fittings should
be installed per installation instructions.
Be sure the condensate runs freely to
the drain and does not accumulate in the
condensate trap or the condensate line. In
cold climates, precautions may need to be
taken to ensure that the condensate drain
lines do not freeze. A water proof heat
tape may be used to prevent freezing of
condensate lines.
It is recommended that the condensate trap
be primed by filling the trap with 1/4 cup
of tap water before connecting the drain
lines.
• Condensate is mildly acidic and should
be collected and disposed per local codes.
Certain local codes require condensate
to be neutralized before it is disposed.
Neutralizer kits are available. Contact
your installer or plumbing contractor.
• Use only PVC, CPVC pipe or
flexible tubing suitable for use with flue
condensate as drain line. If flexible tubing
is used ensure that there are no bends or
twists and has gradual slope to condensate
drain.
• The drain line (along its entire length)
must be at least the same diameter as the
drain of the condensate trap (1/2”).
• The drain line must be short as possible
and have a downward slope towards the
condensate drain. If suitable slope is not
provided, the drain line can get blocked
and will cause improper operation of the
water heater. If a downward slope cannot
be provided, a condensate pump should
be used to pump condensate to a suitable
drain.
• The end of the drain line should be open
to the atmosphere. The end should not be
under water.
• Do not connect the drain line directly to
the sewer drain.
• Do not connect the drain line with
drains from other appliances.
• Do not drain condensate into the water
heater drain pan.
• Do not drain condensate over public
way, walkway or other areas where it will
create slippery condition, which could
lead to personal injury.
NOTICE: If water
appears on the floor DO
NOT assume the tank in
leaking, check venting
and condensate line
connections.
Condensate Trap
Condensate Riser
(1/2" PVC pipe
supplied)
Downward Slope
Condensate Drain
1/2" PVC tee (supplied)
6" air gap
NOTICE: Water Heater
should be leveled for
proper condensate
drainage.
Drain Line
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.
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 1/2 psi (14” w.c.).
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
1/2 psi (14” w.c.).
Gas Supply
The branch gas supply line to the water
heater should be a 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 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 minimum inlet gas pressure (with
main burner on) to the water heater must
be a minimum of 5” w.c. for natural
gas, and a minimum of 11” w.c. for LP
gas. The maximum inlet pressure to the
water heater must not exceed 14" w.c. for
natural gas and 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.
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.
WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury, or
death could result.
12
Installing the water heater
This water heater is a direct vent appliance
and must be installed so that all air for
combustion is derived directly from the
outside atmosphere and all flue gases are
discharged to the outside atmosphere.
For proper installation of the vent and
combustion air-inlet systems, follow the
instructions as detailed in this manual.
DO NOT connect this water heater to
an existing vent or chimney - it must
be vented separately from all other
appliances.
NOTICE: This water heater is
approved to use the following materials
for vent and combustion air-inlet
systems:
PVC (Schedule 40, Cellular Core,
ASTM-F891)
PVC (DWV, ASTM-D2665)
PVC (Schedule 40, ASTM-D1785)
PVC (SDR Series, ASTM-D2241)
CPVC (CPVC 4120, ASTM-D2846)
CPVC (Schedule 40, ASTM-F441)
CPVC (SDR Series, ASTM-F442)
ABS (Schedule 40, DWV, ASTM-D2661)
ABS (Schedule 40, DWV, Cellular Core,
ASTM-F628)
DO NOT mix ABS pipe and fittings
with PVC or CPVC pipe fittings.
NOTICE: It is acceptable to
interchange PVC and CPVC pipe and
fittings.
The unit may be vented horizontally
through a wall or vertically through the
roof.
Vent and combustion air inlet pipe runs
must be adequately supported along both
vertical and horizontal lengths.
Maximum unsupported length is
recommended to be no more than 4 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 and combustion air inlet pipes
from floor joists or other structural
members to help prevent the transmission
of noise and vibration.
Do not support, pin or otherwise secure
the vent and combustion air inlet systems
in a way that restricts the normal thermal
expansion and contraction of the chosen
vent material and air inlet pipe.
If the water heater is being installed as a
replacement for an existing power vented
water heater, a thorough inspection of
the existing vent and combustion air inlet
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
and combustion air inlet length and
terminal locations as detailed in this
manual have been met.
Carefully inspect the entire vent and
combustion air inlet systems pipes 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 vent and combustion air
inlet systems for signs of sagging or
other stresses in the joints as a result
of misalignment of any components
in the systems.
If any of these conditions are found,
they must be corrected in accordance
with the instructions in this manual
before completing the installation and
putting the water heater into service.
Additional installation
information for The Com-
monwealth of Massachusetts
is located on the back page of
this manual.
Vent and Combustion Air Inlet
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 elevations up to 5,999 feet without any
change or modification.
For installation between 6,000 and 8,999
feet, refer to the Venting Information
tables on page 13 for maximum vent
lengths.
Installations above 8,999 feet are not
authorized.
Contact the local gas supplier for more
information.
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.
DANGER: To avoid the
risk of fire, explosion, or
asphyxiation from carbon
monoxide, NEVER operate
the water heater unless it
is properly vented and the
Vent and Combustion Air
Inlet systems are properly
installed as detailed in the
"Vent and Combustion
Air Inlet" 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 vent or
combustion air inlet 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.
!
13
The Minimum and Maximum equivalent lengths for the vent and combustion
air-inlet systems are shown in Table 1.
*Use only Rheem 3 inch concentric termination kit (SP20245). The use of any other kit is not approved. Contact
your installer or local distributor for assistance. Refer to page 37 & 38 for installation of alternate concentric vent
termination.
Table 1
From 0 ft. through 5,999 ft.
Model
Vent & Combustion
Air-Inlet System
Diameter
Min. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Max. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Vent and Combustion Air-Inlet
System Termination(s)
Inches Feet Feet
38 and 48
Gallon Heaters
2 7 30 90° Elbows Concentric*
3 7 60 90° Elbows Concentric*
From 6,000 ft. through 8,999 ft.
Model
Vent & Combustion
Air-Inlet System
Diameter
Min. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Max. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Vent and Combustion Air-Inlet
System Termination(s)
Inches Feet Feet
38 and 48
Gallon Heaters
2 Not allowed Not allowed ------------ ------------
3 7 45 90° Elbows Concentric*
NOTICE: A 90° elbow is equivalent to 5 ft. of straight pipe. A 45° elbow is equivalent to 2.5 ft. of straight pipe.
The use of a 45° elbow is preferred over a 90° elbow. The vent and combustion air-inlet terminations are not
included in the equivalency calculations.
NOTICE: The mixing of 2" and 3" piping is not
allowed. If 3" pipe is used, a 3" to 2" reducer
fitting is allowed at the vent connector fitting.
This water heater is supplied with a 2" PVC
(Schedule 40) 90° vent terminal. When venting
with 3" pipe, Schedule 40 PVC 90° vent terminals
must be used. Screens for both 2" and 3" vent
terminals have been included.
Wind vane for 3" combustion inlet terminals have
been included. Wind vane should be cemented to
the combustion intake terminal using PVC cement.
Wind vane should be cemented as shown in figure
on page 16.
IMPORTANT: Ensure that all the coupling clamps are
tightened before allowing the water heater to operate.
When using PVC, CPVC or ABS pipe and fittings, use 90°
elbows of the corresponding size and material for the vent
terminal and combustion air-inlet terminals.
• Maintain a minimum vertical height of 6 in. of pipe,
including pipe increasers (if used), from the blower
exhaust coupling before a transition into any elbow.
Elbows are limited to a total equivalent length of 20 ft.
(6 m). Maximum allowed four (4) 90° elbows or eight
(8) 45° elbows.
DO NOT use short sweep
elbows. It is recommended to use
only standard and/or long sweep
elbows. See examples as shown.
Additional Fitting Considerations
2 in. pipe diameter
Vent
Combustion air-inlet
Min. 2 1/2 in. to
6 in. Max. Spacing
Min. 2 1/2 in. to
6 in. Max. Spacing
2 in. pipe diameter
3 in. diameter pipe
3 in. diameter pipe
Vent Connector Fitting
Rubber Coupling
Long Sweep 90° Elbow
Standard 90° Elbow
Short Sweep 90° Elbow
Examples of Elbows:
DO NOT use.
GOOD
BEST
14
Installing the Water Heater
Direct Vent Terminal Location
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
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
1 ft.
B = Clearance to window or door that may be
opened
6 in. for appliances ≤ 10,000 Btuh ,
9 in. for appliances > 10,000 Btuh and ≤ 50,000 Btuh,
12 in. for appliances> 50,000 Btuh
C = Clearance to permanently closed window *
D = Vertical clearance to ventilated soft lo-
cated above the terminal within a horizontal
distance of 2 feet 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 extend-
ed above meter/regulator assembly
*
I - Clearance to service regulator vent outlet *
J - Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to any
other appliance
6 in. for appliances ≤ 10,000 Btuh,
9 in. for appliances > 10,000 Btuh and ≤ 50,000 Btuh,
12 in. for appliances> 50,000 Btuh
K - Clearance to a mechanical air supply inlet 3 ft. above if within 10 ft. horizontally
L - Clearance above paved sidewalk or paved
driveway located on public property
*
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".
The following information should be used for determining the proper location of the vent terminal for the water heater.
15
DO NOT install the vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under
eaves, do not locate the vent terminal on the side of a
building with prevailing winter winds.
When terminating the vent and combustion air-inlet pipes
through brick or masonry surfaces, the installation of a rust
resistant sheet metal backing plates behind the vent and
combustion air-inlet terminals are recommended.
DO NOT locate the vent terminal too close to shrubbery, as
flue gasses may damage them.
Caulk all cracks, seams and joints within 6 ft. of the vent
and combustion air-inlet terminals.
In cold climates, precautions may need to be taken to ensure
that the condensate in the vent pipe does not freeze.
Support horizontal sections of the vent and combustion
air-inlet pipe every 4 ft. DO NOT rigidly secure the vent
system. Provisions must be made to allow for expansion
and contraction of the vent system.
DO NOT install the vent and combustion air-inlet terminals
less than 1 ft. above grade or above average snowfall
whichever is greater.
Permanently seal annular openings around the vent and
combustion air-inlet system penetrations using approved
materials to prevent entry of combustion products into the
building.
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
Terminal Location Additional
Considerations
If soffit vent is too close,
block off and install new vent
at another location
Inside
corner
Caulk
Caulk
12 in. min.
above grade or above
anticipated snow level
6 ft. Caulk zone
or to edge of window etc.,
starting within 6 ft.
Rising moisture will
collect under eves
4 ft.
Vent
Terminal
Combustion
Air-Inlet terminal
Wind
Vane
Determine the locations for the vent and
combustion air-inlet terminals per information
on previous page and section above, then make
two (2) holes through the exterior wall to
accommodate the vent and combustion air-inlet
pipes.
• Maintain a minimum horizontal distance of
12 in. between the vent and combustion air-
inlet terminal center lines.
Insert lengths of vent and combustion air-inlet
pipes through the wall as shown.
• Allow sufficient length of pipe to extend
beyond the exterior wall of the building for
attachment of the vent and combustion air-
inlet terminals.
• Maintain a minimum distance from the vent
and combustion air-inlet terminals of not
less than 1 ft. above grade or above average
snowfall whichever is greater.
When installing 3" vent terminals install the
supplied 1/2 in. mesh metal screens inside each
terminal fitting.
Connect the terminals to the vent and
combustion air-inlet pipes which are extending
out of the building.
• Ensure that the back of the supplied terminals
are flush with the outside wall surface.
Complete the installation of the remainder
of the vent system and attach it to the vent
connector fitting on the water heater’s blower
assembly.
• Horizontal lengths of the vent system must
slope upward a minimum of 1/8 in. per foot
as shown in figure on next page.
Horizontal Vent and Combustion Air-Inlet Terminal
Installation
12 in. Min.
Combustion Air-
Inlet Terminal
Exhaust Vent
Terminal
Wind
Vane
NOTICE: The vent
and combustion air-
inlet systems of this
water heater may be
installed horizontally
through a wall or
vertically through the
roof.
The vent and
combustion air-inlet
terminals of the
water heater must be
installed in the same
atmospheric pressure
zone.
16
Installing the water heater
Complete the installation of the remainder of the
combustion air-inlet system and attach it to the
combustion air-inlet connector fitting on the water
heater’s combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the vent
and combustion air-inlet systems as previously
mentioned.
Horizontal Vent and Combustion Air-Inlet Terminal Installation
continued -
-B-
d
.008
d
.010
Horizontal Vent and Combustion Air-Inlet Terminal Installation
Slope horizontal pipe
upward 1/8 in. per foot min.
Min 6 in.
2 ft. x 2 ft. Sheet Metal
Shield on Brick or Masonry
Walls (Optional for air inlet
termination)
Outside of
Building
Terminals with 1/2 in.
Mesh Protective Screens
Inside
Inside of
Building
Rear of Termination
Flush with Outside
of Wall
Exhaust Vent
Top Pan
Combustion
Air-Inlet
Wind Vane on
Combustion
Air-Inlet
Termination
Combustion
Air-Inlet
Vent Pipe
termination
Vent Connector Fitting
The illustration on the left is a enlarged
view of the elbow, "Wind Vane", and
screen assembly which must be installed on
the Combustion Air-Inlet Termination.
Wind Vane
90° Elbow
Screen
17
Maintain a minimum distance from the vent
and combustion air-inlet terminals of not
less than 1 ft. above grade or above average
snowfall whichever is greater.
Connect the vent riser assemblies to the vent
and combustion air-inlet pipes which are
extending out of the building.
• Ensure that the back of the 90° elbows
are flush with the outside wall surface
and that the vent and combustion air-inlet
terminations of the vent risers are parallel
with the outside wall.
IMPORTANT: Remember to include the
additional 90° elbows and vertical height
of the vent and combustion air-inlet pipes
of the vent riser when calculating the
maximum equivalent vent and combustion
air-inlet system lengths. The maximum
equivalent vent and combustion air-inlet
system lengths must be as specified on page
13.
Alternate Horizontal Vent and Combustion Air-Inlet Terminal Installation
Horizontal Vent and Combustion Air-Inlet Alternate Vent Riser Terminal
Installation
*
*
* Clearance is equal and
parallel to wall
Side View
12 in.
min.
Terminal assemblies to be parallel to wall.
Front View
Option 1
Short piece of pipe
Vent Outlet
Combustion Air
Inlet
Wind Vane
-B-
d
.008
d
.010
2 ft. x 2 ft. Sheet Metal
Shield on Brick or Masonry
Walls (Optional for air inlet
termination)
Slope horizontal
pipe upward 1/8
in. per foot min.
Rear of Termination
Flush with Outside
of Wall
Outside of
Building
Inside of
Building
Slope horizontal pipe
upward 1/8 in. per
foot min.
Min 6 in.
Slope horizontal
pipe upward 1/8
in. per foot min.
Wind Vane on
Combustion Air-Inlet
Terminal
Combustion Air-Inlet
12 in. min.
Terminal assemblies to be parallel to wall
Front View
Option 2
Short piece of pipe
Wind Vane
Termination
Openings 12 in.
min. above grade
or above anticipated
snow level
Combustion Air
Inlet
Vent Outlet
Exhaust
Vent
Vent Connector Fitting
Rear of elbow flush
with outside wall
18
Installing the Water Heater
Vertical Vent and Combustion Air-Inlet Installation
The location of the vent and combustion air-inlet
terminals depends on the following minimum clearances
and considerations.
Minimum 12 in. above roof.
Minimum 12 in. above anticipated snow level.
Maximum 24 in. above roof level without additional
support for vent.
Four (4) ft. from any gable, dormer or other roof
structure with building interior access (i.e., vent,
window, etc.).
Ten (10) ft. 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.
Maintain a minimum horizontal distance of
12 in. between the vent and combustion air-inlet
terminal center lines.
Determine the locations for the vent and combustion
air-inlet terminals then make two (2) holes through the
roof and interior ceiling(s) to accommodate the vent and
combustion air-inlet pipes.
Assemble the vent pipe assembly.
Install the vent system and attach it to the vent connector
fitting on the water heater’s blower assembly.
Horizontal lengths of the vent system must slope upwards
a minimum of 1/8 in. per foot.
Install the combustion air-inlet system and attach it to the
combustion air-inlet rubber coupling on the water heater’s
combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the vent and
combustion air-inlet systems as previously mentioned.
Determine the vent and combustion air-inlet terminal
heights and cut the pipe accordingly. Insert lengths of vent
and combustion air-inlet pipes through the ceiling wall as
shown.
Install adequate flashing where the vent and combustion
air-inlet pipes pass through the roof.
Connect vent elbow onto vertical pipe through roof.
Connect a short piece of pipe approximately 3 in. between
the terminals and elbows.
Exhaust Vent and Combustion Air-Inlet
Pipe Through Roof
-B-
d
.008
# Min. 12 in.
Above Roof or
above Anticipated
Snow Level;
whichever is
highest
and
Max. 24 in.
Above Roof
(Without
Additional
Support)
Terminals with 1/2 in. mesh
Protective Screens and
Termination Restrictors Inside.
Elbow
Short Piece of Pipe
Exhaust Vent
#
Combustion
Air-Inlet
#
Short Piece of Pipe
Exhaust Vent
Vent Connector
Combustion
Air-Inlet
Rubber
Coupling
Wind
Vane
19
Alternate Vent and Combustion Air-Inlet Pipe Through Roof
-B-
d
.008
Exhaust Vent
Short Piece of Pipe
Combustion
Air-Inlet
Slope horizontal pipe
upward 1/8 in. per foot
min.
# Min. 12 in. Above
Roof or above
Anticipated Snow
Level; which ever is
highest
and
Max. 24 in. Above
Roof (Without
Additional Support)
#
#
Terminals with 1/2 in. mesh
Protective Screens Inside.
Short Piece of
Pipe
Exhaust Vent
Vent Connector
Combustion
Air-Inlet
Rubber
Coupling
Wind
Vane
Min 6 in.
20
Installing the Water Heater
All joints in the vent and combustion air
inlet 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.
21
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, 60 Hz power
supply, with suitable disconnecting means,
must be connected to the black and white
leads in the heater control enclosure.
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.
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
120V / 60 Hz LESS THAN 5 AMPS
AX5168
708.633.1166
Rheem
AX5168
5.5” X 6.5”
Black
ST
4/3/12
9-1554
{ENGLISH}
GAS VALVE
INTELLI-VENT ELECTRONIC CONTROL
1 2 3 4 5 6
W BK R Y BL G
WIRE HARNESS THAT RUNS FROM BLOWER
ASSEMBLY TO GAS VALVE CONTROL
FLAMMABLE
VAPOR SENSOR
H
G
N
120 VAC PLUG FOR POWERVENT
BLOWER ASSEMBLY
POWER
VENT BLOWER
ASSEMBLY
BLOWER
6 PIN CONNECTOR
W
BK
R
Y
BL
G
CONNECTOR DIAGRAM
SCREW
GND
N
1
2
3
4
5
6
GAS VALVE
INTELLI-VENT ELECTRONIC CONTROL
GND
MOT
120 VAC
N
SCHEMATIC DIAGRAM
BL
N/C
BK
R
W
Y
MOT
BLOWER
NOTE: IF ANY OF THE ORIGINAL WIRE SUPPLIED WITH THE APPLIANCE
MUST BE REPLACED, IT MUST BE REPLACED WITH A 18 GA, 600 V,
105º C WIRE.
BK
G
W
TEMPERATURE
SWITCH NC
TEMPERATURE
SWITCH NC
1
2
3
4
5
6
N/C
BL
BK
R
Y
W
G
H
H
1
2
3
1
2
3
4
1
2
3
GND
IGNITER AND
FLAME SENSOR
W
W
W
FV
BK
BK
COMM PORT
1
2
AUX PORT
BK
BL
G
R
W
Y
=
=
=
=
=
=
BLACK
BLUE
GREEN
RED
WHITE
YELLOW
1
2
3
FLAME SENSOR
W
W
IGNITER
W
VAC
SW NO
VAC
SW NC
VAC
SW NO
VAC
SW NC
1
2
3
4
COMM PORT
BK
BK
1
2
3
4
1
2
THERMISTORS
3
4
BK
R
R
G
FLAMMABLE
VAPOR SENSOR
*
* NOT AVAILABLE ON ALL MODELS
AUX PORT
*
THERMISTORS
BK
R
R
G
TS2
TS1
1
3
2
1
2
22
Installing the water heater
For increased energy efficiency, some
water heaters have been supplied with
two 24” sections of pipe insulation.
Install the insulation, according to the
illustrations above, that best meets your
requirements.
Typical vertical piping arrangement
Typical horizontal piping arrangement
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, condensate trap, gas control
(thermostat) or pressure and temperature
relief valve.
DO NOT apply insulation to the
bottom of the water heater or the area
where the Flammable Vapor Sensor is
located. This area must be unobstructed
so as not to restrict operation of the
sensor.
Inspect the insulation blanket frequently
making certain it has not sagged down
onto 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.
23
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 36.
For increased energy efficiency, this water heater has been supplied with a 2 3/8”
section of T&P insulation. Install the insulation as shown below.
Temperature & Pressure (T&P) Insulation Installation
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.
Typical Side Connect T & P
Arrangement.
Top Cap Installation
Read these instructions thoroughly and
make sure you understand all the steps
and procedures before proceeding with the
installation.
Carefully remove the Top Cap from the wa-
ter heater carton. Install the water heater as
specied per this Use & Care Manual.
NOTICE: Also see information as detailed
in “Water Supply Connections” section.
Locate the small plastic bag containing the
three (3) Dual Lock
®
strips and two (2)
sheet metal screws to be used to attach the
Top Cap in the Use & Care Manual bag.
Peel off one side of the Dual Lock
®
strips
and rmly press near the Top Cap mount-
ing tabs and the inside center front of the
rim on the Top Cap, see gure on left.
Peel off the other side of the Dual Lock
®
strips and place the Top Cap on the top
front center of the water heater ensuring
that it is aligned correctly and properly
positioned on top of the water heater. Press
rmly to ensure proper attachment is made.
Align holes in mounting tabs on the Top
Cap with the holes in the top of the heater
then secure the Top Cap to the water heater
with the two (2) #8 sheet metal screws
(supplied).
IMPORTANT: Do not over tighten the
screws as this may damage the Top Cap.
3 Dual Lock
®
Strips
2 screws
(mounting
tabs)
Inside Center
Front
Inside
Outside
Top Cap View
Heat Trap
24
Installing the water heater
During Installation of this water heater...........
DO
❑ DO check inlet gas pressure to
ensure that it is within the range
specified on the rating plate.
❑ 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.
❑
DO
provide proper slope for
condensate drain line.
DON’T
❑ DON’T block the Flammable
Vapor Sensor located around the
lower portion of the water heater
jacket.
❑ 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 illustration at left).
Burner Access
Door Grommet
Sight Glass
Flammable
Vapor
Sensor
25
G. Condensate Line
❑ Sloped toward drain.
❑ Condensate drain line hoses clamped.
❑ Condensate drain protected from freezing (if
necessary).
❑ Check for leaks in the condensate trap and
line connections.
A. Water Heater Location
❑ In a location where the vent and combustion
air-inlet systems will be within the
requirements specified in this manual.
❑ 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.
❑ Flammable vapor sensor is not blocked.
B. Water Supply
❑ Water heater completely filled with water.
❑ Air purged from water heater and piping.
❑ Water connections tight and free of leaks.
C. Gas Supply
❑ Gas line equipped with shut-off valve, union
and sediment trap.
❑ Approved pipe joint compound used.
❑ Soap and water solution used to check all
connections and fittings for possible gas leak.
❑ Check inlet gas pressure (with main burner
on).
❑ Gas Company inspected installation (if
required).
D. Relief Valve
❑ Temperature and Pressure Relief Valve
properly installed and discharge line run to
open drain.
❑ Discharge line protected from freezing.
❑ Correct power supply (120 V).
❑ Electrical connections tight.
❑ Heater properly grounded and proper polarity
observed.
F. Wiring
Installation Checklist
E. Venting and combustion air-inlet systems
❑ Heater vented separately from all other
appliances.
❑ Blower assembly properly installed.
❑ Proper materials and techniques used in the
installation of the vent and combustion air-
inlet systems.
❑ Vent pipe properly secured to the exhaust
connector of the blower assembly.
❑ Vent and combination air-inlet systems
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.
❑ Combustion air-inlet pipe properly secured to
the combustion air-inlet rubber coupling.
❑
Horizontal section of
vent sloped upward.
26
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 vertical hot
water supply lines.
Hot water
supply to
house
From HOT
outlet on
water heater
Hot water
supply to
heating
unit
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), a
mixing or tempering valve must be
installed in the hot water supply line to
the house in order to reduce the scald
hazard potential.
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.
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
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)
NOTE: This check valve is incorporated
in some heating units. Refer to the
installation instructions supplied with
specific heating unit to determine if it is
required.
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
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
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.
120° to 130°F
140°F
Gas Control (Thermostat)
27
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 GAS OFF TO THE APPLIANCE
WARNING:
If you do not follow these instructions and the Use & Care
Manual instructions exactly, a re or explosion may result causing property
damage, personal injury or loss of life.
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 push in the gas
control buttons. Never use tools. If the
control buttons will not push in, don’t try
to repair them, call a qualied service
technician. Force or attempted repair
may result in re or explosion.
D.
gas supplier’s instructions.
10.
11.
1.
2.
3.
This appliance does not have a pilot. It is
equipped with an ignition device which auto-
matically lights the burner. Do N
OT try to light
the burner 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.
Immediately call your gas supplier
from a neighbor’s phone. Follow the
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
Turn o all electrical power to the appliance.
Set the thermostat to the lowest setting by rst depressing the COOLER and HOTTER
buttons at the same time and holding for (1) second. Depress the COOLER button
until only the VAC indicator light is lit.
Stop! Read the safety information above
on this label.
Toggle the “ON/OFF” switch located on the
gas control to the “OFF” position.
Turn o all electrical power to the appliance.
This appliance is equipped with a Hot
Surface Ignition System which auto-
matically lights the burner. Do NOT open
the inner door of this appliance and try to
light the burner by hand!
Wait ve (5) minutes to clear out any gas.
If you smell gas, STOP! Follow “B” in the
safety information above on this label. If
you do not smell gas, go ahead to the next step.
Turn on all electrical power to the appliance.
Toggle the “ON/OFF” switch located on the
gas control to the “ON” position.
Set thermostat to the desired temperature
setting by pressing the COOLER and
HOTTER buttons at the same time and
holding them for (1) second. Depress the
HOTTER button until the desired
temperature display setting is lit. The
preferred starting point for temperature
setting is indicated by on the thermostat.
If the appliance will not operate, follow
the instructions “TO TURN OFF GAS TO
APPLIANCE” and call your service
technician or gas supplier.
1.
4.
3.
5.
6.
7.
8.
9.
Set the thermostat to the lowest setting
by pressing the COOLER and HOTTER
buttons at the same time and holding
them for (1) second. Depress the COOLER
button until only the VAC indicator
light is lit.
Toggle the “ON/OFF” switch located on the gas control to the “OFF” position.
Toggle the “ON/OFF” switch located on the
gas control to the “ON” position.
2.
VAC A B C
COOLER HOTTER
SCALDING RISK INCREASES
WITH HOTTER WATER
ON/OFF
SWITCH
COOLER/HOTTER
BUTTONS
28
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 pressing the
buttons 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 its lowest
setting 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 available for reducing
point of use water temperature by mixing
hot and cold water in branch water
lines. Contact a licensed plumber or
the local plumbing authority for further
information. (See page 4 for more details.)
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 a hot surface
ignitor to light the main burner. There is
no pilot light to be lit, but on initial start-
up, it is recommended that the outer door
be removed (leave inner door in place for
safety) to determine if the hot surface ignitor
and main burner are operating properly.
Once filled with water, it is only necessary
to plug the power cord in and make sure
the “ON/OFF” switch located on the gas
control (thermostat) is in the “ON” position
to put the water heater into operation. Within
seconds the hot surface ignitor should heat
up, then the gas control (thermostat) should
open and the main burner ignite. After the
main burner ignites, replace the outer door.
If no main burner flame is established, the
gas control (thermostat) 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.”
TO SHUT OFF WATER HEATER – Turn
switch on the gas control (thermostat) to the
“OFF” position.
29
Water Temperature Setting
Maximum water temperatures occur just after
the burner has shut off. To determine the water
temperature, turn on a hot water faucet and place a
thermometer in the water stream.
To avoid any unintentional changes in water
temperature settings, the gas control (thermostat) has a
tamper resistant feature for changing the temperature
setting. To change the temperature setting follow these
instructions.
1. "Wake Up" the temperature indicators by
holding down both "COOLER" and "HOTTER"
temperature adjustment buttons at the same time
for one second, see Figure below. One or two of
the temperature indicators will light up. These
indicators will only remain on for 30 seconds if no
further buttons are pressed. After 30 seconds the
control will go back to "Sleep" mode.
2. Release both of the temperature buttons.
a. To decrease the temperature press and
release the "COOLER" button until the
desired setting is reached.
b. To set temperature up to 140°F press and
release the “HOTTER” button until the
desired temperature is reached.
c. To set temperature above 140°F follow
these instructions:
i. Press and hold the “HOTTER” button
for a few seconds, until all temperature
indicator lights come on for one second and
then turn off.
ii. Now press and release the “HOTTER”
button until the desired temperature is
reached. The maximum temperature setting
is 160°F.
iii. To decrease the temperature press and
release the “COOLER” button until the
desired temperature is reached.
NOTICE: Holding down the button will not
continue to lower or raise the temperature setting.
The button must be pressed and released for each
temperature change desired.
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.
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
(shut-off) valve to the appliance.
If the water heater has been subjected to fire, flood or
physical damage, turn off the manual gas (shut-off)
valve, and do not operate the water heater again until
is has been checked by a qualified service technician.
NOTICE: Do not use this appliance if any part
has been under water. Immediately call a qualified
installer or service agency to replace a flooded
water heater. Do Not attempt to repair 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
VAC
A B C
HOTTERCOOLER
SCALDING RISK INCREASES
WITH HOTTER WATER
ON/OFF
Switch
VAC
A B C
HOTTERCOOLER
SCALDING RISK INCREASES
WITH HOTTER WATER
COOLER
Button
HOTTER
Button
!
DANGER: Hotter water increases the potential
for Hot Water SCALDS.
Temperature Setting
Display
VA C ▲ A B C
Burns on Adult Skin
VAC = approx. 70°F
● ○ ○ ○ ○ ○
--------------------
• = approx. 110°F
○ ● ○ ○ ○ ○
More than 5 minutes
Both
• and ▲ = approx. 115°F
○ ● ● ○ ○ ○
More than 5 minutes
▲= approx. 120°F
○ ○ ● ○ ○ ○
More than 5 minutes
Both ▲and A= approx. 125°F
○ ○ ● ● ○ ○
1-1/2 to 2 minutes
A = approx. 130°F
○ ○ ○ ● ○ ○
About 30 seconds
Both A and B = approx. 135°F
○ ○ ○ ● ● ○
About 10 seconds
B = approx. 140°F
○ ○ ○ ○ ● ○
Less than 5 seconds
Both B and C = approx. 145°F
○ ○ ○ ○ ● ●
Less than 3 seconds
C = approx. 150°F
○ ○ ○ ○ ○ ●
About 1-1/2 seconds
C-Flashing = approx. 160°F
○ ○ ○ ○ ○ ●
About 1/2 seconds
30
Sequence of Operation
During initial start-up or a call for heat,
the control will verify the pressure switch
is open.
Once the control verifies the blower
pressure switch is open, the control will
energize the blower motor for the pre-
purge sequence.
The control will verify the blower pressure
switch has closed, ensuring that the
blower is functioning properly and that
the condensate, combustion air inlet and
venting systems are not blocked.
The control will then proceed through
a sequence of self-diagnostics before
initiating a trial for ignition.
During the trial for ignition, the hot
surface ignitor will warm up.
Once the hot surface ignitor warms up, the
main gas control (thermostat) will open
allowing gas to flow to the main burner.
Once the main burner ignites, the control
will verify that the burner flame is present
through the flame sense circuit. The hot
surface ignitor will then turn off.
The main burner will remain lit
throughout the heat cycle until the water
temperature setting is reached.
Once the water temperature setting is
reached, the control will close the main
gas control (thermostat) which will
extinguish the main burner flames.
The blower motor will stay energized
for an additional few seconds after the
control verifies that the burner flame is
extinguished in order to clear combustion
gases from the water heater.
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 “NOTICE” on page 3 for
additional information.
Operating the water heater
31
Care and cleaning of the water heater
Draining the Water Heater
!
CAUTION: Shut off gas to the water
heater gas control (thermostat) at the
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 drain 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 the combustion air-inlet pipe and
vent pipes. Make certain that all joints are
secure and that vent pipe supports are all in
place. Check the outdoor vent and air inlet
pipes to see that it is free of obstructions,
and that there is no damage nearby caused
by condensate.
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 devices 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 condensate, combustion
air inlet and venting systems. Contact
a Qualified Service Technician if this
occurs.
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: 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: Hotter water
increases the potential for
Hot Water Scalds.
32
Housekeeping
To ensure sufficient ventilation and
combustion air supply, proper clearances
must be maintained.
DO NOT obstruct or block the
Flammable Vapor Sensor. The sensor
does not require any maintenance or
cleaning. DO NOT get Flammable Vapor
Sensor wet. 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 hot surface ignitor
and burner annually.
Through the sight glass, inspect the hot
surface ignitor with the main burner off
and inspect the main burner while firing.
If any unusual burner operation is noted,
the water heater should be shut off
until qualified service assistance can be
obtained.
!
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
Care and cleaning of the water heater
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.
Combustion Air-Inlet and Vent System Inspection
Inspect the combustion air-inlet and vent
systems. Make certain that all joints are
secure and that combustion air-inlet and
vent system supports are all in place.
Check the outdoor combustion air-inlet
and vent system terminals to see that they
are free of obstructions, and that there is
no damage nearby caused by condensate.
33
Before You Call For Service
Problem Possible Causes What To Do
Condensation This usually happens when This is normal. After the water in the tank warms
a new water heater is up, the condensation will disappear. If, however, the
filled for the first time. condition persists, examine the piping and fittings
for possible leaks.
Moisture from the products This is normal and will disappear in time. Excessive
of combustion condensing condensation can cause main burner outage.
on the tank surface.
An undersized water Use a water heater size that meets the requirements
heater will cause of your needs.
condensation.
Yellow flame Scale on top of the burner. Contact a qualified service technician to remove scale.
or soot
Vent and/or combustion air- Remove obstruction or debris from vent and/or
inlet pipes are blocked. combustion air-inlet pipes.
Unable to light Air in gas line. Contact a qualified service technician to purge the air
the main burner from the gas line.
Blocked vent and/or combustion Contact a qualified service technician to evaluate vent
air-inlet pipes. and/or combustion air-inlet pipes for blockage.
Pressure Switches Make sure the pressure switch hose is not "kinked".
Wire Connection not fully Contact a qualified service technician to confirm wire
secured. connections.
Combustion Shut-off Devices Combustion shut-off devices should be inspected by a
tripped. qualified service technician.
Gas Control Problem Contact a qualified service technician.
Main burner does not Gas Control's (Thermostat’s) Contact a qualified service technician.
stay lit gas shut-off device
has opened.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent
and/or combustion air-inlet systems or other safety devices. Refer repairs to qualified service personnel.
CAUTION: Make certain power to water heater is "OFF" by unplugging blower power cord from power
outlet 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.
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 devices 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 vent and/or combustion air-inlet systems. Contact a Qualified Service
Technician if this occurs.
34
Problem Possible Causes What To Do
Rumbling noise Scale and sediment Drain the water heater to remove scale and sediment from
the tank. Refer to the top of page 31.
Relief valve Pressure build up This is an unacceptable condition and must be
producing popping caused by thermal corrected. Contact the water supplier or plumbing
noise or draining expansion to a contractor on how to correct this. Do not plug the
closed system. relief valve outlet.
Not enough or Water usage may have Wait for the water heater to recover after an
no hot water exceeded the capacity abnormal demand.
of the water heater.
Low gas pressure. Check gas supply pressure and manifold pressure.
The gas control (thermostat) See the “Water Temperature Setting” of The Water
may be set too low. Heater section of this manual.
Leaking or open hot Make sure all faucets are closed.
water faucets.
Check valve error codes. Refer to gas valve error code table on page 35.
“ON/OFF” switch turned off. Turn switch to “ON” position.
Blower unplugged. Plug in. Verify power supply (120VAC).
Combustion Shut-off Devices Contact a qualified service technician.
tripped.
Water is too hot The gas control (thermostat) ● See the “Water Temperature Setting” of The Water
is set too high. Heater section of this manual.
Gas Control (Thermostat) ● Contact a qualified service technician to replace the
Defective. gas control (thermostat).
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 devices 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 vent and/or combustion air-inlet systems. Contact a Qualified Service
Technician if this occurs.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent
and/or combustion air-inlet systems or other safety devices. Refer repairs to qualified service personnel.
CAUTION: Make certain power to water heater is "OFF" by unplugging blower power cord from power
outlet 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.
35
Gas Control LED Error Codes
LED Status Problem Solution
● ○ ○ ● ○ ○
VAC ▲ A B C
An open earth ground circuit to the
ignition system.
1. Check that the earth ground connection is properly con-
nected.
2. Check that the ground conductor on the water heater is
properly connected.
● ○ ● ○ ● ○
VAC ▲ A B C
Wiring error or a high resistance to
earth ground.
1. Check proper connection of line neutral and hot wires.
2. Check that the water heater is securely connected to earth
ground.
○● ○ ● ○ ○ ○
VAC ▲ A B C
Pressure switch remained closed
longer than 5 seconds after the call for
heat began.
1. Pressure switch wiring is incorrect.
2. Replace pressure switch.
● ○ ● ○ ○ ●
VAC ▲ A B C
Pressure or temperature switch
remained open longer than 5 seconds
after the combustion blower was
energized.
1. Pressure or temperature switch(es) wiring is incorrect.
2. Pressure switches tubing is not connected correctly.
3. Air inlet, exhaust or condensate lines obstructed.
4. Check vent and air inlet pipe size used is per this installa-
tion instructions.
5. Check maximum number of elbows or maximum equiva-
lent feet of vent and air inlet pipe does not exceed recom-
mended length in these installation instructions.
6. Replace faulty switch(es) on blower assembly.
● ○ ● ○ ● ●
VAC ▲ A B C
Error in the hot surface ignitor circuit. 1. Check that all wiring is correct and secure.
2. Replace hot surface ignitor.
● ○ ○ ● ● ○
VAC ▲ A B C
System in lockout. 1. Gas supply is off or too low to operate.
2. Hot surface ignitor not positioned correctly.
3. Low voltage to the water heater.
4. Electric polarity to unit is incorrect - test and correct.
5. Replace gas control (thermostat).
6. Check that the ame sensor rod is making good contact
with burner ame.
○● ○ ○ ○ ● ●
VA C ○ ▲ A B C
Problem in the gas valve driver circuit. 1. Turn power to the water heater off for 10 seconds and
then back on.
2. If error code persists, replace gas control (thermostat).
● ● ● ● ● ●
VAC ▲ A B C
Problem with the internal circuit. 1. Turn power to the water heater off for 10 seconds and
then back on.
2. If error code persists, replace gas control (thermostat).
● ○ ○ ○ ● ○
VAC ▲ A B C
Flame signal sensed out of proper
sequence.
1. Turn power to the water heater off for 10 seconds and
then back on.
2. If error code persists, replace gas control (thermostat).
● ○ ○ ● ● ●
VAC ▲ A B C
ECO activated. 1. Turn power to the water heater off for 10 seconds and
then back on.
2. If error code persists, replace gas control (thermostat).
○● ○ ● ● ○ ○
VAC ▲ A B C
One of the temperature adjust buttons
stuck closed.
1. Press and release each of the buttons once. Cycle water
heater power off and on.
2. If error code persists, replace gas control (thermostat).
● ○ ● ● ○ ●
VAC ▲ A B C
Water temperature sensor error, open
or shorted.
1. Check that all wiring is correct and secure.
2. Turn power off.
2. Turn power to the water heater off for 10 seconds and
then back on.
3. If error code persists, replace gas control (thermostat).
○● ○ ○ ● ○ ●
VA C ○ ▲ A B C
Flammable sensor problem. 1. Check for correct wiring to FV sensor.
2. Check for open circuits to FV sensor.
3. Replace FV sensor.
○● ○ ○ ○ ○ ●
VAC ▲ A B C
Flammable vapors near water heater.
Control in lockout.
1. FV sensor detected presence of ammable vapors.
2. Contact a service agency.
● ● ○ ○ ● ○
VAC ▲ A B C
Weak flame current. 1. Check that the ame sensor rod is making good contact
with burner ame.
2. Contact a service agency.
36
Replacement Parts
For 38 and 48 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 40.
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.
*Burner Assembly Kit
The kit provides extra speed
clips and tamper resistant
screws.
** May differ in actual
appearance.
Vent
Connector
Flue baffle and hanger
Anode rod
** 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
Flammable Vapor Sensor
Pipe Support and
Clamp
Combustion Air
Inlet Pipe.
Condensate
Trap and Rubber
Couplings
Condensate Tubing
Cap
Blower
Air Inlet Assembly
Rubber Coupling
37
Alternate Vent Termination
INSTALLATION INSTRUCTIONS
for Alternate Concentric Terminal:
Use only Rheem 3" vent kit part number SP20245.
IMPORTANT: Read these instructions thoroughly and make sure you understand all steps and proce-
dures before proceeding with the installation.
INSPECT SHIPMENT:
Inspect contents for possible missing or damaged
components. (See Figure 1) This kit includes:
Qty. 1 (one) – 3 3/16” x 7 1/2” PVC Modified
Reducer Rain Cap (part #
68-23421-03C)
Qty. 1 (one) – 2 7/8” Diameter PVC Exhaust
Pipe 37 1/8” long (part #
68-23421-03B)
Qty. 1 (one) – 4 1/2” Diameter PVC Air-
inlet Pipe – 24” long (part #
68-23421-03A)
Qty. 1 (one) – 3 1/4” x 3 3/4” x 4 7/8” PVC
Wye (part # 68-23421-03D)
Qty. 1 (one) – SDR 35 90° PVC Elbow
!
WARNING: These instructions are intended as an
aid to qualified service personnel for proper
installation, adjustment, and operation of this kit.
Read these instructions thoroughly before attempting
installation, adjustment, or operation. Failure to
follow these instructions can result in improper
installation, adjustment, service, or maintenance
possibly resulting in fire, electrical shock, property
damage, personal injury, or death.
!
WARNING: This kit is to be used only for vent &
combustion air-inlet termination for Power Direct Vent
Gas Water Heaters. Do not use this kit to terminate
any other type of appliance. Failure to follow this
warning could result in fire, personal injury, or death.
LOCATION: The Concentric Vent & Combustion Air-
Inlet Termination Kit can be installed in a horizontal or
vertical (roof) orientation. Before installation procedures
begin, determine the best location for the termination kit.
IMPORTANT: When installing the kit, consider
the following when choosing a location:
• Kit is positioned where vent gases will not
damage nearby structure.
• Kit is positioned so that wind will not cause
combustion products, leaves, snow, or other
debris from entering the combustion air-
inlet.
• Kit is positioned where it will not get
damaged by foreign objects (i.e.: balls,
stones, etc.).
• Kit is positioned where vent gases will not
be inhaled or cause a nuisance.
NOTE: Ensure that the heights of the vent and/
or combustion air-inlet openings are above the
anticipated snow level by a minimum of 1 ft.
SECTION 1: HORIZONTAL INSTALLATION
STEP 1:
Cut a 5” diameter opening in the sidewall and install field
supplied weather-seal boot/flashing for a 4 1/2” PVC pipe.
STEP 2:
From inside, insert the 4 1/2” diameter combustion air-
inlet pipe through the seal boot so that a maximum of 1”
clearance occurs between the outside wall and rain cap
fins (See Figure 2). Ensure that no insulation or debris is
accumulated in the pipe.
STEP 3:
Secure the combustion air-inlet pipe using a field supplied
perforated strap or a suitable type material. (See Figure 2)
STEP 4:
Assemble the vent pipe assembly by cleaning and
cementing the rain cap to the 2 7/8” diameter vent pipe.
Assemble the supplied SDR 35 90° PVC elbow by
cleaning and cementing to the rain cap. (See Figure 3)
Vent Pipe Assembly
Wye
4 1/2 " Dia Pipe
2 7/8" Dia Pipe
Rain Cap
Elbow
FIGURE 1
FIGURE 3
1" Max
Combustion Air-Inlet
to Water Heater (3")
Field Supplied
Strap
Vent from Water
Heater (3")
Exhaust
FIGURE 2
Termination
Openings
12 in. min.
above grade
or above
anticipated
snow level
Air Intake
38
Alternate Concentric Terminal Installation: Continued
WARNING: Do not operate the water heater with the
rain cap and elbow removed or recirculation of combustion
products may occur. The vent and combustion air-inlet
systems may also take in water, causing damage to the
water heater. Failure to follow this warning could result in
damage to the unit, improper operation, personal injury, or
death.
STEP 5:
From the outside, slide the vent pipe assembly
through the combustion air-inlet pipe and
cement the rain cap to the combustion air-inlet
pipe. From the inside, cement the wye fitting to
the combustion air-inlet pipe. (See Figure 2)
STEP 6:
Complete the installation of the remainder of
the vent and combustion air-inlet systems as
required on pages 12 thru 20 of the Use and
Care manual.
SECTION 2: VERTICAL INSTALLATION
STEP 1:
Cut a 5” diameter opening in the roof and install
field-supplied weather-seal boot/flashing for a
4 1/2” PVC pipe.
STEP 2:
From inside, insert the 4 1/2” diameter
combustion air-inlet pipe up through the seal
boot, ensuring that no insulation or debris
accumulate in the pipe. Ensure termination
height is above the 12” minimum clearance
anticipated snow level.
STEP 3:
Secure the combustion air-inlet pipe using a
field supplied perforated strap or a suitable type
material. (See Figure 4)
STEP 4:
Assemble the vent pipe assembly by cleaning
and cementing the rain cap to the 2 7/8”
diameter exhaust pipe. Assemble the supplied
90° elbow by cleaning and cementing to the
rain cap. Assemble the field supplied SDR 35
PVC connector and SDR 35 90° PVC elbow by
cleaning and cementing together as shown in
Figure 4.
WARNING: Do not operate the water heater with
the rain cap removed or recirculation of combustion
products may occur. The vent air pipes may also take
in water, causing damage to the water heater. Failure
to follow this warning could result in damage to the
unit, improper operation, personal injury, or death.
STEP 5:
From the roof top, slide the vent pipe assembly
down through the intake pipe and cement the
rain cap to the intake pipe. From the inside,
cement the wye fitting to the intake pipe. (See
Figure 4)
STEP 6:
Complete the installation of the remainder of
the vent and combustion air-inlet systems as
required on pages 12 thru 20 of the Use and
Care manual.
NOTICE: The concentric terminal assembly is designed
to accept 3" diameter pipe. If a 2" diameter pipe is
used a 3" to 2" reducer fitting must be installed to
the vent and combustion air inlet connections of the
concentric terminal assembly.
Alternate Vent Termination
Exhaust
Field Supplied
Strap
Combustion Air- to
Water Heater (3")
Vent From Water Heater (3")
Field Supplied
PVC Connector
Field Supplied
90° Elbow
FIGURE 4
# Min. 18 in.
Above Roof or
12" above
Anticipated Snow
Level; which-
ever is highest
and
Max. 24 in.
Above Roof
(Without
Additional
Support)
Air Intake
#
39
Notes:
40
IF YOU NEED SERVICE
1. Should you have any questions about your new water heater, or if it requires adjustment, repair, or routine
maintenance, it is suggested that you first contact your installer, plumbing contractor or previously agreed
upon service agency. In the event the firm has moved, or is unavailable, refer to the telephone directory,
commercial listings or local utility for qualified service assistance.
2. Should your problem not be solved to your complete satisfaction, you should then contact the
Manufacturer’s National Service Department at the following address:
1241 Carwood Court
Montgomery, Alabama 36117
Phone: 1-800-432-8373.
When contacting the manufacturer, the following information will be requested:
a. Model and serial number of the water heater as shown on the rating plate attached to the jacket of
the heater.
b. Address where the water heater is located and physical location.
c. Name and address of installer and any service agency who performed service on the water heater.
d. Date of original installation and dates any service work was performed.
e. Details of the problems as you can best describe them.
f. List of people, with dates, who have been contacted regarding your problem.
The Commonwealth of Massachusetts requires compliance with regula-
tion
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 mon-
oxide detector with an alarm is installed on each additional level of the dwell-
ing, building or structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner to secure the
services of 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 detec-
tor 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 horizon-
tally vented gas fueled heating appliance or equipment. The sign shall read,
in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY
BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".
4. INSPECTION. The state or local gas inspector of the side wall horizon-
tally vented gas fueled equipment shall not approve the installation unless,
upon inspection, the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1
through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not Required To
Be Vented" in the most current edition of NFPA 54 as adopted by the Board;
and
2. Product Approved side wall horizontally vented gas fueled equipment in-
stalled in a room or structure separate from the dwelling, building or structure
used in whole or in part for residential purposes.
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM PROVIDED. When the manufacturer of Product Approved side
wall horizontally vented gas equipment provides a venting system design or
venting system components with the equipment, the instructions provided
by the manufacturer for installation of the equipment and the venting system
shall include:
1. Detailed instructions for the installation of the venting system design or
the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equipment does not provide the parts
for venting the ue gases, but identies "special venting systems", the fol-
lowing 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.
Important Instructions for the Commonwealth of Massachusetts
