VACATION
VERY
HOT
WARM
ABC
COOLER
HOTTER
AP17506 (01/15)
®
!
FOR YOUR SAFETY!
— Do not store or use gasoline or other
flammable vapours 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 neighbour’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!
Commercial 75 Gallon
Use & Care Manual
With Installation Instructions for the Installer
Water Heaters
Warning: This water heater is not
suitable for use in manufactured (mobile) homes!
Commercial Gas
!
2
Care and Cleaning
Draining ................ 32
Maintenance ............. 32
Vent System Inspection .... 33
Burner Inspection ........ 33
Extended Shut-Down ......34
Safety Information
Safety Precautions ....... 3–6
LP Gas Models ........... 5
Installation Instructions
Location ................. 7
Water Supply Connections .. 9
Gas Supply .............. 11
Venting ...............12-22
Wiring Diagram ...........23
Pipe Insulation .........24-25
Heat Traps ...............25
Installation Checklist .......26
Potable/Space Heating .... 27
Operating Instructions
Lighting Instructions ...... 28
Water Temperature .... 29, 30
Troubleshooting Tips
Before You Call
For Service ........... 35-36
Customer Service
Parts List ................ 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
Your safety and the safety of others are very important. There
are many important safety messages in this manual and on your
appliance. Always read and obey all safety messages.
This is the safety alert symbol. Recognize this symbol
as an indication of Important Safety Information!
This symbol alerts you to potential hazards that can
kill or hurt you and others.
All safety messages will follow the safety alert symbol and
either the word “DANGER”, “WARNING”, “CAUTION” or
“NOTICE”.
These words mean:
!
DANGER
An imminently hazardous situation
that will result in death or serious
injury.
!
WARNING
A potentially hazardous situation that
could result in death or serious injury
and/or damage to property.
!
CAUTION
A potentially hazardous situation that
may result in minor or moderate
injury.
Notice:
Attention is called to observe a
specified procedure or maintain
a specific condition.
READ THE SAFETY INFORMATION
!
3
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate
this water heater. It may save you time and money. Pay particular attention to the Safety Instructions.
Failure to follow these warnings could result in serious bodily injury or death. Should you have problems
understanding the instructions in this manual, or have any questions, STOP, and get help from a qualified
service technician, or the local gas utility.
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
Failure to install the blower assembly and properly vent the water heater to the outdoors
as outlined in the Venting Section of the Installation Instructions in this manual can result
in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation
from carbon monoxide, never operate this water heater unless it is properly vented and
has an adequate air supply for proper operation. Be sure to inspect the vent system for
proper installation at initial start-up; and at least annually thereafter. Refer to the Care and
Cleaning section of this manual for more information regarding vent system inspection.
DANGER!
INSTALL THE BLOWER ASSEMBLY AND PROPERLY VENT
THE WATER HEATER
Gasoline, as well as other flammable materials and liquids (which include but are not
limited to adhesives, solvents, paint thinners etc.), and the vapours 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 the 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 vapour sensor that will automatically shut
down the water heater in the presence of gasoline vapours and some other flammable vapours. If the
flammable vapour 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 vapour sensor. Do not
submerse the flammable vapour sensor in water. Do not allow the flammable vapour sensor to come
into contact with any substances such as bleach or cleaners. See the “Gas Valve LED Error Code”
Section of this manual for a list of error codes.
4
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
(49°C) 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 29 for more details.)
The temperature of the water in the heater can be
regulated by pressing the temperature buttons on the
front of the gas control (thermostat). To comply with
safety regulations the gas control (thermostat) was
set at its lowest setting before the water heater was
shipped from the factory.
The illustration below details the approximate water
temperature for each display mark on the Gas
Control (Thermostat) Temperature Dial.
D ANGER
!
HOT
Water temperature over 125°
can
cause severe burns
instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
F
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of a water heater’s gas control. Water temperatures above
125°F (52° C) 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.
Notice: Mixing valves are recommended for reducing
point of use water temperature by mixing hot and
cold water in branch water lines. It is recommended
that a mixing valve complying with the Standard for
Temperature Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be installed. See page
29 for more details and contact a licensed plumber or the
local plumbing authority for further information.
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
!
VACATION
WARNING
VERY
HOT
WARM
A B C
COOLER
HOTTER
!
DANGER: Hotter
water increases the
potential for Hot Water
SCALDS.
Time/Temperature Relationship in Scalds
Water Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1
1
/2 to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1
1
/2 seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
Temperature Setting
Display
▼ A B C
Burns on Adult Skin
WARM = approx. 70°F (21°C)
● ○ ○ ○ ○ ○
--------------------
▼ = approx. 120°F (49°C)
○ ○ ● ○ ○ ○
More than 5 minutes
A = approx. 130°F (54°C)
○ ○ ○ ● ○ ○
About 30 seconds
B = approx. 140°F (60°C)
○ ○ ○ ○ ● ○
Less than 5 seconds
C = approx. 150°F (66°C)
○ ○ ○ ○ ○ ●
About 1-1/2 seconds
C-Flashing = approx. 160°F (71°C)
○ ○ ○ ○ ○ ●
About 1/2 seconds
D = approx. 180°F (82°C)
○ ○ ○ ○ ○ ●
--------------------
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 - 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
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California Law requires certain water heaters must be braced, anchored or strapped
to resist falling or horizontal displacement due to earthquake motions. For the affected
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 affected water heaters of
a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable
bracing procedures.
IMPORTANT:
Carefully inspect the water heater for damage before proceeding with the installation.
Of specic interest should be any damages to the blower assembly. If you nd damage,
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.
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, for US installations, 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. For Canadian installations, use the latest edition of CAN/CSA B149 - Natural Gas and Propane
Installation Code. A copy can be purchased from the Canadian Standards Association, 5060 Spectrum
Way, Mississauga, Ontario L4W 5N6.
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 drain pan,
adequately drained, must be installed
under the water heater.
The water heater must be centered in the
drain pan.
The drain pan must not restrict air flow
to the combustion air inlet openings
(perforation openings) located around the
lower perimeter of the water heater.
Drain 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
vapours are to be used or stored. Such
liquids include gasoline, LP gas (butane
or propane), paint or adhesives and their
thinners, solvents or removers.
DO NOT block or obstruct any of the
combustion air inlet openings located
around the perimeter of the water heater.
A minimum of 1 in. (2.5 cm) is required
between these combustion air inlet
openings and any obstruction.
Because of natural air movement in a room
or other enclosed space, flammable vapours
can be carried some distance from where
liquids which give off flammable vapours
are to be used or stored. The open flame
of the water heater’s pilot or main burner
can ignite these vapours 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 compliant gas water heaters can be
installed on a garage floor without the use
of an 18-inch stand in accordance with
the National Fuel Gas Code, NFPA 54,
ANSI Z223.1, for US installations and in
accordance with the CAN/CSA B149.1 -
Natural Gas and Propane Installation Code
for Canadian installations, unless otherwise
directed by Province, 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. .
● The water heater should be installed
so as to minimize the length of plastic
vent pipe and the number of vent
connection fittings required. (Refer to
the “INSTALLATION” Section of this
manual.)
● Long hot water lines should be insulated
to conserve water and energy.
● The water heater and water lines should
be protected from exposure to freezing
temperatures.
● DO NOT install the water heater in
bathrooms, bedrooms, any occupied
rooms normally kept closed, or in
unprotected outdoor areas.
● Minimum clearance from combustible
construction:
* "Front" Clearance dimension is measured
from the water heater jacket to the closet
door.
** "Top" clearance dimension is measured
from the jacket top 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 in. (61 cm) 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. (7.6 cm) in all directions.
!
WARNING: Combustible
construction refers to adjacent
walls and ceilings and should
not be confused with
combustible or flammable
products and materials.
Combustible and/or
flammable products and
materials should never be
stored in the vicinity of this or
any gas appliance.
Front* Sides Rear Top**
3”
(7.6 cm)
1”
(2.5 cm)
0”
(0 cm)
12”
(30.5 cm)
NOTICE: DO NOT allow the
flammable vapour sensor to
become submerged in water.
Make sure the drain pan is
properly drained.
NOTICE: DO NOT allow
the drain pan to obstuct the
flammable vapor sensor.
The auxiliary drain pan
installation MUST conform
to local codes.
Combustion Air Inlet
Openings
Diameter of
water heater
plus 2" min.
(5 cm)
Max.
2.75"
(7 cm)
Flammable
Vapour
Sensor
DO NOT obstruct or block the
Flammable Vapour Sensor.
NOTICE: For proper operation
and maintenance, a minimum
clearance of 1.5 in. must be
provided from the combination
temperature and pressure relief
valve to any wall or object.
8
Installing the water heater.
Combustion and Ventilation Air
Ventilation (ambient) air temperature
must be 125°F (52°C) or less. Proper
operation of the water heater requires
air for combustion and ventilation.
Provisions for combustion and
ventilation air must comply with
referenced codes and standards.
DO NOT block or obstruct any of the
combustion air inlet openings located
around the perimeter of the water
heater. A minimum of 1 in. (2.5 cm) is
required between these combustion air
inlet openings and any obstruction.
NOTICE: If the water heater is
installed in an unconfined space within a
building of conventional frame, masonry
or metal construction, infiltration
air is normally adequate for proper
combustion and ventilation. If the
water heater is installed in a confined
space, provisions for combustion and
ventilation air must be made.
DO NOT obstruct or block the
Flammable Vapour Sensor.
A confined space is one having a volume
of less than 50 cubic feet per 1000 Btuh
(4.8m
3
/kW) of the aggregate input of all
appliances within that space.
The air must be supplied through two
permanent openings of equal area. One
is to be located not more than 18 in. (46
cm) or less than 6 in. above floor level
and the other is to be located within 12 in.
(30.5 cm) from the ceiling.
The minimum net free area of each opening
must not be less than one square inch
(6.5 sq. cm) per 1000 Btuh of the total
input rating of all the appliances in the
enclosure (but not less than 100 square
inches (650 sq. cm)), if each opening
communicates with other unconfined areas
inside the building.
Buildings of unusually tight construction
shall have the combustion and ventilation
air supplied from outdoors, or a freely
ventilated attic or crawl space.
If air is supplied from outdoors, directly or
through vertical ducts, there must be two
openings located as specified above and
each must have a minimum net free area
of not less than one square inch
(6.5 sq. cm) per 4000 Btuh of the total
input rating of all the appliances in the
enclosure.
If horizontal ducts are used to
communicate with the outdoors, each
opening must have a minimum net free
area of not less than one square inch
(6.5 sq cm) per 2000 Btuh of the total
input rating of all the appliances in the
enclosure. If ducts are used, the minimum
dimensions of rectangular air ducts shall
not be less than 3 in. (7.62 cm).
NOTICE: If the duct openings which
supply combustion and ventilation air
are to be covered with a protective
screen or grill, the net free area
(openings in the material) of the
covering material must be used in
determining the size of the openings.
Protective screening for the openings
MUST NOT be smaller than 1/4 in.
(0.64 cm) mesh to prevent clogging by
lint or other debris.
Corrosive Atmospheres
The air in beauty shops, dry cleaning
establishments, photo processing
labs, and storage areas for liquid and
powdered bleaches or swimming pool
chemicals often contain such halogenated
hydrocarbons.
An air supply containing halogenated
hydrocarbons may be safe to breathe,
but when it passes through a gas flame
corrosive elements are released that
will shorten the life of any gas burning
appliance.
Propellants from common spray cans
or gas leaks from A/C and refrigeration
equipment are highly corrosive after
passing through a flame.
The water heater warranty is voided when
failure of the heater is due to operation in
a corrosive atmosphere.
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
Inspect Shipment
Inspect the water heater for possible
damage. Check the markings on the rating
plate of the water heater to be certain the
type of gas supplied corresponds to the
water heater requirements.
NOTICE: Do not install the
water heater in attics where
the temperature may exceed
125°F (52-°C). This water
heater is equipped with a
temperature sensing device
that will shut off the water
heater if the maximum
allowable vent pipe
temperature is exceeded.
9
Thermal Expansion
Determine if a check valve exists in the inlet
water line. Check with your local water
utility company. It may have been installed
in the cold water line as a separate back flow
preventer, or it may be part of a pressure
reducing valve, water meter or water softener.
A check valve located in the cold water inlet
line can cause what is referred to as a “closed
water system”. A cold water inlet line with no
check valve or back flow prevention device is
referred to as an “open” water system.
As water is heated, it expands in volume and
creates an increase in the pressure within the
water system. This action is referred to as
“thermal expansion”. In an “open” water
system, expanding water which exceeds the
capacity of the water heater flows back into
the city main where the pressure is easily
dissipated.
A “closed water system”, however, prevents
the expanding water from flowing back into the
main supply line, and the result of “thermal
expansion” can create a rapid and dangerous
pressure increase in the water heater and
system piping. This rapid pressure increase can
quickly reach the safety setting of the relief
valve, causing it to operate during each heating
cycle. Thermal expansion, and the resulting
rapid, and repeated expansion and contraction
of components in the water heater and piping
system can cause premature failure of the relief
valve, and possibly the heater itself. Replacing
the relief valve will not correct the problem!
The suggested method of controlling thermal
expansion is to install an expansion tank in
the cold water line between the water heater
and the check valve (see illustration below).
The expansion tank is designed with an air
cushion built in that compresses as the system
pressure increases, thereby relieving the over
pressure condition and eliminating the repeated
operation of the relief valve. Other methods
of controlling thermal expansion are also
available. Contact your installing contractor,
water supplier or plumbing inspector for
additional information regarding this subject.
Water Supply Connections
Refer to the illustration below for suggested
typical installation. The installation of unions
or flexible copper connectors is recommended
on the hot and cold water connections so that
the water heater may be easily disconnected
for servicing if necessary. The HOT and COLD
water connections are clearly marked on the
water heater. Install a shut-off valve in the cold
water line near the water heater.
IMPORTANT: Do not apply
heat to the HOT or COLD
water connections. If sweat
connections are used, sweat
tubing to adapter before
fitting adapter to the cold
water connections on heater.
Any heat applied to the cold
water supply fittings will
permanently damage the
dip tube and heat traps.
NOTICE: The National
Fuel Gas Code (NFGC)
mandates a manual gas
shutoff 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.The Canadian
Standards Association
mandates a manual gas
shut off valve: See CSA
B149- Installation Code
for complete instructions.
Local codes or plumbing
authority requirements may
vary from the instructions
or diagrams provided and
take precedent over these
instructions.
Typical Installation
Heat trap 6”
(15.2 cm)
minimum
Heat trap 6”
(15.2 cm) minimum
Union
To gas supply
Sediment trap
Cap
Union
Drain Pan Pipe
to suitable drain.
Drain
valve
Relief valve discharge
line to suitable open
drain.
To cold water
supply
6” (15.2 cm) Air gap
Blower assembly
1/4” per foot (10 mm per m)
maximum slope up or down for
horizontal venting.
Auxiliary drain pan
Union (optional)
Anode
Blower Exhaust Coupling
Manual gas shut-off valve
Thermostatic gas valve
Jacket door
Temperature and
pressure relief valve
Shut-off valve
Shut-off
valve
Thermal expansion
tank (if required)
Combustion Air
Inlet Openings
Hot water outlet to
fixtures
Water Heater Jacket
Flammable Vapor Sensor
10
Installing the water heater.
A new combination temperature and pressure relief valve, complying with the Standard for Relief
Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed 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 (1034 kPa), 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 vapour sensor
to become submerged in water.
WARNING: The tank
must be full of water before
heater is turned on. The
water heater warranty does
not cover damage or failure
resulting from operation
with an empty or partially
empty tank.
Condensation
Condensation can form on the tank
when it is first filled with water.
Condensation might also occur with a
heavy water draw and very cold inlet
water temperatures.
Drops of water falling on the burner can
produce a sizzling or pinging sound.
This condition is not unusual, and will
disappear after the water becomes heated.
If, however, the condensation continues,
examine the piping and fittings for
possible leaks.
11
WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the type
shown on the rating plate. Such conversion could result in hazardous operating conditions.
Leak Testing
The water heater and its gas connections
must be leak tested at normal operating
pressures before it is placed in operation.
Turn on the manual gas shut-off valve
near the water heater.
Use a soapy water solution to test for
leaks at all connections and fittings.
Bubbles indicate a gas leak that must
be corrected.
The factory connections to the gas
control (thermostat) should also be leak
tested after the water heater is placed in
operation.
High Altitude
Input rating of this water heater is
based on sea level operation. At higher
elevations the actual input rate may be
lower than the value listed on the rating
label due to the derating of natural gas and
LP gas. This water heater can be installed
at elevation up to 2000 ft (609 m) without
any change or modification.
For installation between 2000 ft.
(609 m) and 7700 feet (2347 m), refer to
the Venting Information table on page 15
for maximum equivalent vent lengths.
Installations above 7700 ft (2347 m) are
not authorized.
Contact the local gas supplier for more
information.
Gas Supply
The branch gas supply line to the water
heater should be clean 1/2 in. black steel
pipe or other approved gas piping material.
A union or ANSI design certified semi-
rigid or flexible gas appliance connector
should be installed in the gas line close
to the water heater. For US, The National
fuel Gas Code (NFGC) mandates a
manual gas shutoff valve: See (NFGC)
for complete instructions. For Canada,
The Canadian Standards Association
mandates a manual gas shut off valve: See
the CAN/CSA B149.1 Natural Gas and
Propane Installation Code for complete
instructions.
If flexible connectors are used, the
maximum length shall not exceed
36 in.(91.4 cm) and must meet the
requirements in ANSI Z21.24-Connectors
for Gas Appliances.
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.) (42.70 N•m) in tightening the pipe
joint at the gas control (thermostat) inlet,
particularly if teflon pipe compound is
used, as the valve body may be damaged.
The inlet gas pressure to the water heater
must not exceed 14.0 in. w.c.(3.5 kPa) for
Natural gas, or 14 in. w.c.(3.5 kPa) for LP
gas. For purposes of input adjustment, the
minimum inlet gas pressure (with main
burner on) is shown on the water heater
rating plate. If high or low gas pressures
are present, contact your gas supplier for
correction.
WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury, or
death could result.
WARNING: Failure to
install a water heater
suitable for the altitude at
the location it is intended to
serve, can result in improper
operation of the appliance
resulting in property
damage and/or producing
carbon monoxide gas, which
could result in personal
injury, or death.
Pressure Testing the Gas Supply System
The water heater and its individual shutoff
valve must be disconnected from the gas
supply piping system during any pressure
testing of that system at test pressures in
excess 1/2 psi (3.5 kPa).
The water heater must be isolated from
the gas supply piping system by closing
its individual manual gas shutoff valve
during any pressure testing of the gas
supply at test pressures equal to or less
than 1/2 psi (3.5 kPa).
12
Installing the water heater.
The water heater must be installed with the factory supplied blower assembly in place.
DANGER: Failure to
install the blower assembly
and properly vent the water
heater to the outdoors as
outlined in the Venting
section of this manual will
result in unsafe operation of
the water heater causing
bodily injury, explosion,
fire or death.
To avoid the risk of fire,
explosion, or asphyxiation
from carbon monoxide,
NEVER operate the water
heater unless it is properly
vented and has adequate air
supply for proper operation
as outlined in the Venting
section of this manual.
The vent pipe must overlap
a minimum of ½ in. (1.3
cm) on each connection. It
is important that the vent
pipe engages fully into any
pipe fitting and be kept
in that position until the
adhesive has fully cured.
DO NOT drill or punch
holes in the plastic pipe or
fittings.
NOTICE: The vent piping
must be connected to the
blower assembly using
the rubber coupling and
supplied clamps. The vent
pipe connections at the
blower assembly must be
leak tested with soap and
water solution upon initial
startup. Repair any leaks
before allowing the water
heater to operate.
NOTICE: This unit is
equipped with a Flammable
Vapour Sensor. Do not
apply power until enough
time has passed to allow the
vapours from the primer
and cement to dissipate.
Venting - US Only
This water heater must be vented to the
outdoors as described in these instructions.
DO NOT connect this water heater to an
existing vent or chimney - it must be vented
separately from all other appliances.
NOTICE: This water heater is approved
to use the following materials for pipe of
the vent system:
PVC (DWV, ASTM-D2665 or CSA
B181.2)
PVC (Schedule 40, ASTM-D1785 or CSA
B137.3)
CPVC (CPVC 4120, ASTM-D2846 or CSA
B137.6)
CPVC (Schedule 40, ASTM-F441 or CSA
B137.3)
ABS (Schedule 40, DWV, ASTM-D2661 or
CSA B181.1)
This water heater is approved to use the fol-
lowing materials for the ttings of the vent
and combustion air-intake systems:
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM D2661)
DO NOT mix ABS pipe and ttings with
PVC or CPVC pipe ttings.
NOTICE: It is acceptable to interchange
PVC and CPVC pipe and ttings.
NOTICE: This water heater may be
installed in attics provided ambient tem-
peratures do not exceed 125°F (52°C) and
CPVC or ABS pipe and ttings are used
for the entire vent system.
The vent system must be adequately sup-
ported along both vertical and horizontal
lengths.
The vent system of this water heater may
be installed horizontally through a wall or
vertically through the roof.
Maximum unsupported length is recom-
mended to be no more than 4 ft. (1.22 m).
It is very important that the rst hanger be
located on the horizontal length immedi-
ately near the rst 90-degree elbow from the
vertical rise of vent pipe connected to the
water heater.
The support method used should isolate the
vent pipes from oor joists or other struc-
tural members to help prevent the transmis-
sion of noise and vibration.
Do not support, pin or otherwise secure
the vent system in a way that restricts the
normal thermal expansion and contraction
of the chosen venting material.
If the water heater is being installed as a re-
placement for an existing power vent water
heater, a thorough inspection of the existing
vent systems must be performed prior to
any installation work.
1. Verify that the correct materials as speci-
ed in this manual have been used, and that
the minimum or maximum vent lengths and
terminal location as detailed in this manual
have been met.
2. Carefully inspect the entire vent system
for any signs of cracks or fractures, particu-
larly at the joints between elbows or other
ttings and the straight length of vent pipe.
3. Check the vent for signs of sagging or
other stresses in the joints as a result of mis-
alignment of any components in the system.
4. If any of the conditions above are found,
they must be corrected in accordance with
the instructions in this manual before com-
pleting the installation and putting the water
heater into service.
Ambient Temperature Installation Re-
quirements
Rheem recommends this water heater be
installed in locations where the ambient
temperatures do not exceed 100°F (38°C).
DO NOT install the water heater in a loca-
tion where it may be subjected to ambient
temperatures exceeding 125°F (52°C).
The water heater should be installed so as
to minimize the length of plastic pipe and
the number of vent and combustion air-inlet
connection ttings required.
Vent pipe materials must be chosen based
upon the ambient temperature where the
water heater is installed and the location
within the vent system.
13
NOTICE: This water heater may be installed in attics provided ambient temperatures do not
exceed 125°F (52°C) and CPVC or ABS pipe and ttings are used for the entire vent system.
Models
Ambient Installation Temperatures and Vent System Material Specications
Below 100°F (38°C) 100°F(38°C) to 125°F(52°C)
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
10 ft. to Max
(3 m to Max.)
Equivalent Vent
System Length
0 to 20 ft.
(0 to 6 m)
Equivalent Vent
System Length
20 ft. to Max
(6 m to Max.)
Equivalent Vent
System Length
75 Gallon
CPVC or ABS PVC,CPVC or ABS CPVC or ABS PVC,CPVC or ABS
Venting – Canada Only
This water heater must be vented to the outdoors as
described in these instructions and the current edition of
CAN/ CSA B149.1 Natural Gas and Propane Installation
Code. DO NOT connect this water heater to an existing
vent or chimney - it must be vented separately from all
other appliances.
This water heater must be vented to the outdoors with
a venting system that is certied to the Underwriter’s
Laboratories of Canada Standard, ULC-S636 (Current
Edition). The vent system must be installed in accor-
dance with the vent system manufacturer’s installation
instructions.
The rst 3 ft. (90 cm) from the appliance ue outlet
must be readily accessible for visible inspection.
It is not acceptable to interchange components of this
system with another certied vent system or unlisted
pipe and ttings.
NOTICE: This unit must be vented using only 3 in.
(7.6 cm.) or 4 in. (10.2 cm) diameter PVC or CPVC
pipe and ttings that are certied to ULC-S636,
refer to page for approved diameters and allowable
equivalent lengths by water heater model.
This water heater may be vented horizontally through a
sidewall or vertically through a roof. The vent system
must be adequately supported along both vertical and
horizontal lengths. Maximum unsupported length is
recommended to be no more than 4 ft. (1.22 m).
It is very important that the rst hanger be located on the
horizontal length immediately near the rst 90-degree
elbow from the vertical rise of vent pipe connected to
the water heater.
The support method used should isolate the vent pipe
from oor joists or other structural members to help
prevent the transmission of noise and vibration.
DO NOT support, pin or otherwise secure the vent sys-
tem in a way that restricts the normal thermal expansion
and contraction of the chosen venting material.
If the water heater is being installed as a replacement for
an existing power vent water heater, a thorough inspec-
tion of the existing vent system must be performed prior
to any installation work. The existing vent must be code
compliant.
1. Verify that the correct materials as detailed above
have been used, and that the minimum or maximum vent
length and terminal location as detailed in this manual
have been met.
2. Carefully inspect the entire venting system for any
signs of cracks or fractures, particularly at the joints
between elbows or other ttings and the straight length
of vent pipe.
3. Check the system for signs of sagging or other
stresses in the joints as a result of misalignment of any
components in the system.
4. If any of these conditions are found they must be cor-
rected in accordance with the venting instructions in this
manual before completing the installation and putting
the water heater into service.
Ambient Temperature Installation Requirements
Rheem recommends this water heater be installed in
locations where the ambient temperatures do not exceed
100°F (38°C).
DO NOT install the water heater in a location where it
may be subjected to ambient temperatures exceeding
125°F (52°C).
The water heater should be installed so as to minimize
the length of plastic pipe and the number of vent con-
nection ttings required.
Vent pipe materials must be chosen based upon the am-
bient temperature where the water heater is installed and
the location within the vent system.
14
Installing the water heater.
NOTICE: Follow CAN/CSA B149.1 and the vent system manufacturer's installation instructions for
proper installation of the vent system.
NOTICE: This water heater may be installed in attics provided ambient temperatures do
not exceed 125°F (52°C) and CPVC pipe and ttings that are certied to ULC-S636 are
used for the entire vent system.
Models
Ambient Installation Temperatures and Vent System Material Specications
Below 100°F (38°C) 100°F(38°C) to 125°F(52°C)
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
10 ft. to Max
(3 m to Max.)
Equivalent Vent
System Length
0 to 20 ft.
(0 to 6 m)
Equivalent Vent
System Length
20 ft. to Max
(6 m to Max.)
Equivalent Vent
System Length
75 Gallon
CPVC PVC and/or CPVC CPVC PVC and/or CPVC
Maximum and Minimum Vent Lengths
Read these instructions thoroughly and make sure you
understand all steps and procedures before proceeding
with the installation.
1. Connect the vent system piping to the blower assem-
bly using the already installed 3 in. (7.6 cm) diameter
blower exhaust coupling and clamps. (See Figure 1)
2. For vent terminal use the 3 in. (7.6 cm) diameter,
Schedule 40, PVC, 90°, 1/4 standard bend elbow sup-
plied with the water heater .
This water heater may also be installed with 4 in. (10.2
cm) diameter pipe and ttings for the vent system.
To connect the vent system piping,
• Install a 12 in. (30.5 cm) length of 3 in. (7.6 cm)
diameter pipe vertically to the blower exhaust coupling
on the blower assembly,
• Followed by a 3 in. (7.6 cm) to 4 in. (10.2 cm) diam-
eter pipe increaser tting (See Figure 2).
For vent terminal,
• Use 4 in. (10.2 cm) diameter, Schedule 40, PVC, 90°,
1/4 standard bend elbows (not supplied).
DO NOT use unequal diameters of pipe and ttings for
the vent system except as dened previously.
IMPORTANT: Ensure that all the coupling clamps
are tight before allowing the water heater to operate.
When using ABS (US only) or CPVC pipe and ttings,
use 90° elbows of the corresponding size and material
for the vent terminal.
Screens for the 3 & 4 in. vent terminals have been sup-
plied with the water heater.
The minimum and maximum equivalent lengths for the
vent system are shown in Table 1.
• Maintain a minimum vertical height of 1 ft. (30.5 cm)
of pipe, including pipe increasers (if used), from the
blower exhaust coupling before transitioning into any
elbow.
• The vent termination is not included in the equiva-
lency calculations.
NOTICE: A 90°, 1/4 standard bend or long bend
elbow is equivalent to 5 ft. (1.52 m) of straight pipe. A
45°, 1/8 standard bend or long bend elbow is equiva-
lent to 2.5 ft. (0.76 m) of straight pipe.
DO NOT use short bend elbows. Use only standard and/
or long bend elbows. See examples.
15
Figure 2
4 in.
(10.2 cm)
pipe diameter
Vent
# Min. 2 1/2 in.
(6.4 cm) to
6 in. (15.2 cm)
Max. Spacing
#
Additional PVC Fittings Considerations
Do Not Use
Short Sweep 90° Elbow
Long Sweep 90° Elbow
Best
Good
Standard 90° Elbow
Table 1
From Sea level through 2000 ft. (609 m) Above Sea level
Model
Vent System
Diameter
Min. Allowed Equivalent Vent
Lengths (Each Pipe Run)
Max. Allowed Equivalent Vent
Lengths (Each Pipe Run)
Vent System
Termination(s)
Inches Feet Meters Feet Meters
75 Gallon
3 10 3 50 15
90° Elbow
4 10 3 100 30
90° Elbow
From 2000 ft. (609 m) Above Sea Level through 7700 ft. (2347 m) Above Sea Level
75 Gallon
3 10 3 40 12 90° Elbow
4 10 3 100 30 90° Elbow
Figure 1
3 in.
(7.6 cm)
pipe diameter
Vent
16
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted
Canadian Installations
1
A = Clearance above grade, veranda, porch, deck or
balcony
1 ft. (30 cm)
B = Clearance to window or door that may be opened 1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
C = Clearance to permanently closed window 1 ft. (30 cm)
D = Vertical clearance to ventilated soft located above
the terminal
2 ft. (61 cm)
E - Clearance to unventilated soft 1 ft. (30 cm)
F - Clearance to outside corner 1 ft. (30 cm)
G - Clearance to inside corner 2 ft. (61 cm)
H - Clearance to each side of center line extended above
meter/regulator assembly
3 ft. (91 cm) within a height 15 ft. (4.5 m) above
the meter/regulator assembly
I - Clearance to service regulator vent outlet 3 ft. (91 cm)
J - Clearance to non mechanical air supply inlet to build-
ing or the combustion air inlet to any other appliance
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
K - Clearance to a mechanical air supply inlet 6 ft. (1.83 m)
L - Clearance above paved sidewalk or paved driveway
located on public property
7 ft. (2.13 m )*
M - Clearance under veranda, porch, deck, or balcony 1 ft. (30 cm )**
1
In accordance with the CSA B149.1, Natural Gas and Propane Installation Code
* A vent shall not be terminated directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
** Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
For clearances not specied in CSA B149.1, the following statement shall be included: "Clearance in accor-
dance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions."
Installing the water heater.
Direct Vent Terminal Clearances - US
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. (30 cm)
B = Clearance to window or door that may be
opened
6 in. (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 9 in. (23
cm) for appliances > 10,000 Btuh (3kW) and ≤ 50,000 Btuh
(15 KW), 1 ft. (30 cm) for appliances> 50,000 Btuh (15 kW)
C = Clearance to permanately closed window *
D = Vertical clearance to ventilated soft lo-
cated above the terminal within a horizon-
tal distance of 2 ft. (61 cm) from the center
line of the terminal
*
E - Clearance to unventilated soft *
F - Clearance to outside corner *
G - Clearance to inside corner *
H - Clearance to each side of centerline 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. (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 9 in. (23
cm) for appliances > 10,000 Btuh (3kW) and ≤ 50,000 Btuh
(15 KW), 1 ft. (30 cm) for appliances> 50,000 Btuh (15 kW)
K - Clearance to a mechanical air supply inlet 3 ft. (91 cm) above if within 10 ft. (3 m) horizontally
L - Clearance above paved sidewalk or paved
driveway located on public 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".
17
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted
Canadian Installations
1
A = Clearance above grade, veranda, porch, deck or
balcony
1 ft. (30 cm)
B = Clearance to window or door that may be opened 1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
C = Clearance to permanently closed window 1 ft. (30 cm)
D = Vertical clearance to ventilated soft located above
the terminal
2 ft. (61 cm)
E - Clearance to unventilated soft 1 ft. (30 cm)
F - Clearance to outside corner 1 ft. (30 cm)
G - Clearance to inside corner 2 ft. (61 cm)
H - Clearance to each side of center line extended above
meter/regulator assembly
3 ft. (91 cm) within a height 15 ft. (4.5 m) above
the meter/regulator assembly
I - Clearance to service regulator vent outlet 3 ft. (91 cm)
J - Clearance to non mechanical air supply inlet to build-
ing or the combustion air inlet to any other appliance
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
K - Clearance to a mechanical air supply inlet 6 ft. (1.83 m)
L - Clearance above paved sidewalk or paved driveway
located on public property
7 ft. (2.13 m )*
M - Clearance under veranda, porch, deck, or balcony 1 ft. (30 cm )**
1
In accordance with the CSA B149.1, Natural Gas and Propane Installation Code
* A vent shall not be terminated directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
** Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
For clearances not specied in CSA B149.1, the following statement shall be included: "Clearance in accor-
dance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions."
Direct Vent Terminal Clearances- Canada
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
18
NOTICE: For Canada follow the vent system manufacturer’s installation instructions for proper
installation of the vent system.
Installing the water heater.
Horizontal Vent Terminal Installation
Read these instructions thoroughly and make sure you
understand all steps and procedures before proceeding with
the installation.
Determine the locations for the vent terminal then make a
hole through the exterior wall to accom¬modate the vent
pipes.
Insert vent pipe through the wall as shown.
• Allow sufficient length of pipe to extend beyond the
exterior wall of the building for attachment of the vent
terminal.
Place the supplied mesh metal screens inside the vent
terminal.
NOTICE: For cold climates the screens may be removed.
Connect the terminal to the vent pipe which is extending out
of the building.
• Ensure that the back of the supplied terminal is 4 in. from
the outside wall surface.
Complete the installation of the remainder of the vent system
and attach it to the blower exhaust coupling on the water
heater’s blower assembly.
• Horizontal lengths of the vent system must slope
downward a minimum of 1/8 in. per ft. (10 mm per m).
DO NOT use unequal diameters of pipe and fittings for the
vent system except as defined previously.
Support vertical and horizontal lengths of the vent system as
previously mentioned.
This water heater model is supplied a vent termination
restrictor. This restrictor helps the water heater achieve peak
efficiency when the water heater is installed using 3 in. (7.6
cm) diameter pipe at the minimum equivalent vent length of
10 ft. (3 m).
IMPORTANT: DO NOT install the termination
restrictors in equivalent vent length longer than 10 ft. (3
m) or on any other Power Vent model.
2' x 2' Sheet
Metal Shield on
Brick or Masonry
Walls
Outside of Building Wall
From
Water Heater
Vent Pipe
Pipe Coupling
Vent Terminal with
Mesh Protective
Screen Inside
4"
(10
cm)
12"
(30
cm)
Horizontal Vent Terminal Location
A vent shall not terminate:
• where it may cause hazardous frost or ice accumulations
on adjacent property surfaces;
• less than 7 ft. (2.1 m) above a paved sidewalk or a paved
driveway that is located on public property;
• within 6 ft. (1.8 m) of a mechanical air-supply inlet to any
building;
• above a regulator within 3 ft. (900 mm) horizontally of the
vertical centerline of the regulator vent outlet to a maximum
vertical distance of 15 ft. (4.5 m);
• except as required by CAN/CSA B149.1 Natural Gas and
Propane Installation Code, any distance less than that of any
gas pressure regulator vent outlet as detailed;
• less than 1 ft. (300 mm) above average snowfall or grade
level, reference CAN/CSA B149.1 Natural Gas and Propane
Installation Code;
• within 12 in. (300 mm) of a window or door that can be
opened in any building, of any nonmechanical air-supply
inlet to any building, or of the combustion air inlet of any
other appliance;
• underneath a veranda, porch, or deck unless:
- the veranda, porch, or deck is fully open on a minimum of
two sides beneath the floor; and
- the distance between the top of the vent termination and the
underside of the veranda, porch, or deck is greater than 1 ft.
(300 mm).
19
Vertical Vent Termination Location
The location of the vent terminal depends on the following
minimum clearances and considerations (see illustration):
Minimum 18 in.
(46 cm)
exposed pipe above roof.
Minimum 2 ft.
(61 cm)
exposed pipe above roof level
without additional support for vent.
Four (4) ft.
(1.2 cm)
from any gable, dormer or other
roof structure with building interior access (i.e., vent,
window, etc.).
Within 6 ft. (1.8 m) of a mechanical air supply inlet.
Read these instructions thoroughly and make sure you
understand all steps and procedures before proceeding
with the installation.
Determine the locations for the vent terminal then
make a hole through the roof and interior ceiling(s) to
accommodate the vent pipe.
Assemble the vent pipe assembly.
Install the vent system and attach it to the blower
exhaust coupling on the water heater’s blower assembly.
• Horizontal lengths of the vent system must slope
towards the water heater a minimum of 1/8 in. per foot
(10 mm per m).
Support vertical and horizontal lengths of the vent
system as previously mentioned.
Determine the vent height and cut the pipe accordingly.
• Insert lengths of vent pipe through the ceiling wall as
shown.
• Install adequate flashing where the pipe passes
through the roof.
• Place the supplied mesh metal screen inside the
vent terminal then connect a short piece of pipe
approximately 3 in. (7.6 cm) between the terminal and
elbow.
NOTICE: For cold climates the screen may be
removed.
NOTICE: This water heater model is supplied a vent
termination restrictor. This restrictor helps the water
heater achieve peak efficiency when the water heater
is installed using 3 in. (7.6 cm) diameter pipe at the
minimum equivalent vent length of 10 ft. (3m).
Additional
Vent Terminal Location
Considerations
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 pipes through brick or masonry
surfaces, the installation of a rust resistant sheet metal
backing plates behind the vent terminal is recommended.
DO NOT locate the vent terminal too close to shrubbery, as
flue gases may damage them.
Caulk all cracks, seams and joints within 6 ft. (1.83 m) of the
vent terminal.
Insulate vent pipe exposed to cold conditions (attics, crawl
spaces, etc.) with inflammable material to help prevent
moisture from accumulating in the vent pipe.
Support horizontal sections of the vent pipe every 4 ft. (1.22
m). 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 terminal less than 1 ft. (30 cm)
above grade or average snowfall whichever is greater.
Permanently seal annular openings around the vent system
penetration using approved materials to prevent entry of
combustion products into the building.
If soffit vent is too
close, block off and
install new vent at
another location
Inside
corner
Caulk
Caulk
Caulk
6’ caulk
zone or to edge of window
etc., starting within 6 ft.
Rising moisture will
collect under eaves
4’
6’ caulk zone
2’ sq. sheet metal plate on
brick or masonary surface is recommended.
6’
WARNING: Moisture in the flue gas will condense as it
leaves the vent terminal. In cold weather this condensate can
freeze on the exterior wall, under the eaves and on
surrounding objects. Some discoloration to the exterior of the
building is to be expected. However, improper location or
installation can result in severe damage to the structure or
exterior finish of the building
3" (7.6 cm) Piece of
Vent Pipe
Min. 18" (46 cm)
Above Roof
Min. 12" (30.5 cm)
Above Anticipated
Snow Level.
Max. 24" (61 cm)
Above Roof (Without
Additional Support)
Insert Mesh Protective Screen
Inside Terminal Elbow
Vent Pipe
Through Roof
Elbow
Vent Terminal
20
-B-
d
.008
d
.010
Alternate Vent Pipe Through Roof
Exhaust Vent
3" (7.6 cm) Piece of
Pipe
#
Min. 18 in. (46 cm) Above
Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
#
Terminals with 1/2 in. (1.3 cm) Mesh
Protective Screens Inside.
Optional -
Condensate
Management Drain
Port*
-B-
d
.008
d
.010
#
Min. 18 in. (46 cm)
Above Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
Terminals with 1/2 in. (1.3 cm) Mesh
Protective Screens and Termination
Restrictors Inside.
Note: Termination Restrictors used on 75
Gallon models ONLY
Exhaust Vent Pipe Through Roof
Elbow
3" (7.6 cm) Piece of Pipe
Exhaust Vent
#
*See Condensate Management Section for
additional information about optional piping.
*See Condensate Management Section for
additional information about optional piping.
Installing the water heater.
IMPORTANT: DO NOT install the termination
restrictor in equivalent vent lengths longer than 10 ft.
or on any other Power Vent model
NOTICE: In Canada vent pipe, fittings, solvent
cement, primers and procedures must conform to
ULC-S636.
Slope 1/8 in. per foot
(10 mm per m) towards
the water heater
21
Condensate Management and Vent Risers
There is no condensate collection and disposal
required for Rheem water heaters under most
conditions. Installations where the vent run is
short or it runs through conditioned space in the
home, such as basements or interior walls, do not
typically cause condensation and will not require
any condensation disposal methods regardless of
vent pipe slope. Figure 1 shows the recommended
vent pipe slope of no less than 1/8 inch per foot
(10 mm per m) away from the water heater. Any
condensation in the venting system will drain toward
the vent termination. The blower pipe coupling
features a capped drain port which is not needed in
this case.
There are vent piping configurations, when
combined with certain environmental conditions that
can produce enough condensate to require collection
and disposal. When a slope away from the water
heater cannot be achieved and condensate handling
is required in a horizontal vent system, the vent pipe
should be sloped toward the water heater as shown
in Figure 2.
• Remove drain port cap.
• Connect flexible condensate drain tube to the
blower drain port.
• Loop the drain tube so that it has a circular trap.
See Figure 3.
• Secure the top and bottom of the loop with wire
ties or plastic zip ties as shown.
• DO NOT restrict any portion of the circular drain
tube.
• Loop must be smooth and not collapse the tube.
• Fill circular drain tube with water to make sure
combustion gases cannot vent into the room.
• Condensation collected must be discharged per
local codes.
• DO NOT drain over public way or walkway.
• Refer to local codes for any condensate
requirements.
If the venting system is vertical and conden-
sation handling is required, then the blower
coupling drain port and tube must be used as
described previously. Any horizontal portion
of the vent pipe must slope toward the water
heater at a minimum of 1/8 inch per foot (10
mm per m) so a water trap is not created. See
Figures 4 & 5 as examples of a vertical installa-
tions with condensation removal tube and trap.
A vent riser is used when the vent termination can-
not be located above grade or snow lines. Power
vented water heaters installed with a vent riser
should have a slope toward the water heater if the
venting is long and passes through unconditioned
spaces. It is recommended that these installa-
tions have the condensate collection and disposal
method dened previously. Figure 6 shows a
condition where a vent riser is necessary to meet
the minimum clearance. Note that the vent pipe
must slope back to the water heater so that a water
trap is not created at the outside 90 degree elbow.
NOTICE: Vent
riser ttings
and pipe must
be included in
the total vent
length calcula-
tion as described
in the manual.
CAUTION:
Make sure
drain port cap
is securely in
place.
NOTICE: Some
models are not
supplied with
a drainable
coupling. If
condensation is
required, please
contact the
service depart-
ment listed on
the back of this
manual.
-B-
d
.008
d
.010
Figure 1
Slope Away
Drain Port
with Cap
-B-
d
.008
d
.010
Slope Toward
Drain Port
Trap
To Drain
Figure 2
From Drain
Port
Wire or Zip
Ties
Water
Filled
To Drain
Figure 3
-B-
d
.008
d
.010
Figure 4
-B-
d
.008
d
.010
Figure 5
Figure 6
!
*
*
Clearance is 4" from back of elbow to wall
Side View
Termination Openings -
12 in. (30.5 cm) min. above grade or
anticipated snow level
22
Installing the water heater.
All joints in the vent piping must be
properly sealed and the following
materials are recommended:
PVC materials should use ASTM D2564
grade cement.
CPVC materials should use ASTM F493
grade cement.
ABS materials should use ASTM D2235
grade cement.
Cleaner-Primer and Medium Body
Solvent Cement:
Cut pipe end square, remove jagged
edges and burrs. Chamfer end of pipe,
then clean fitting socket and pipe joint
area of all dirt, grease or moisture.
After checking pipe and socket for
proper fit, wipe socket and pipe with
cleaner-primer. Apply a liberal coat of
primer to inside surface of socket and
outside of pipe. Do not allow primer
to dry before applying cement.
Apply a thin coat of cement evenly in
the socket. Quickly apply a heavy
coat of cement to the pipe end and
insert pipe into fitting with a slight
twisting motion until it bottoms out.
NOTICE: Cement must be fluid; if not,
recoat.
Hold the pipe fitting for 30 seconds to
prevent the tapered socket from
pushing the pipe out of the fitting.
Wipe all excess cement from the joint
with a rag. Allow 15 minutes before
handling. Cure time will vary
according to fit, temperature and
humidity.
NOTICE: Stir the solvent cement
frequently while using. Use a natural
bristle brush or the dauber supplied
with the can. The proper brush size is
one inch.
NOTICE: This unit is equipped with
a Flammable Vapor Sensor. DO NOT
apply power until enough time has
passed to allow the vapors from the
primer and cement to dissipate.
Cementing Joints (US Only)
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.
23
Wiring
If local codes permit, the water heater may
be connected to electric service with the
power cord provided (DO NOT use an
extension cord). A grounding receptacle is
required.
If local codes do not permit the use of
cord connections, a 120 V, 50/60 Hz
power supply, with suitable disconnecting
means, must be connected to the black and
white leads in the heater control enclosure.
A knock-out hole is provided to permit use
of conduit or metal-clad cable connectors.
The 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 in US and for Canada the Canadian
Electrical Code CSA C22.1. 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!
SCHÉMA
SCHÉMA POUR CONNEXION
AX4829-2
SCHEMATIC
CONNECTION DIAGRAM
CONTACTEUR
MARCHE/ARRÊT
ON / OFF
SWITCH
W
G
G
BK
BK
BK
BK
W
R
Y
BK
BL
BL
PIN 5 - BL
PIN 6 - G
PIN 1 - W
PIN 2 - BK
PIN 3 - R
PIN 4 - Y
G
“H”
“N”
BL
BL
SOUPAPE
DE GAZ
ALLUMEUR ET
DÉTECTEUR DE
FLAMME
IGNITER AND
FLAME PROBE
CONTRÔL
ÉLECTRONIQUE
CONTRÔLE
ÉLECTRONIQUE
FV
INDUCTEUR
CONNECTEUR Á
6 BROCHES
TERRE
TERRE
TERRE
PRESSOSTAT
CONTACTEUR
DE TEMPÉRATURE
BK = NOIR
BL = BLEU
G = VERT
R = ROUGE
W = BLANC
Y = JAUNE
L2
G
I
L1
Y
W
W
W
R
BK
CAPTEUR FV
CAPTEUR
DE FLAMME
ALLUMEUR
PRESSOSTAT
CONTACTEUR
DE TEMPÉRATURE
CONTACTEUR
MARCHE/ARRÊT
GAS
VALVE
ELECTRONIC
CONTROL
ELECTRONIC
CONTROL
INDUCER
6 PIN CONNECTOR
PRESSURE
SWITCH
TEMPERATURE
SWITCH
BK = BLACK
BL = BLUE
G = GREEN
R = RED
W = WHITE
Y = YELLOW
FV SENSOR
FLAME
SENSOR
IGNITER
PRESSURE
SWITCH
TEMPERATURE
SWITCH
ON / OFF
SWITCH
120V 60Hz LESS THAN 5 AMPS
24
For increased energy efficiency, some
water heaters have been supplied with
two 24 in.(61 cm) sections of pipe
insulation.
Please install the insulation, according
to the illustrations above, that best meets
your requirements. Blower assembly not
shown.
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, gas control (thermostat)/gas
valve or pressure and temperature relief
valve.
DO NOT apply insulation to the
bottom of the water heater or the area
where the combustion air inlet openings
and Flammable Vapour Sensor are
located. This area must be unobstructed
so as not to restrict combustion air flow
to the burner or operation of the sensor.
Inspect the insulation blanket frequently
making certain it has not sagged
and it is not restricting the air flow
to the combustion air inlet openings
(perforation holes) or the Flammable
Vapour sensor located around the lower
perimeter of the water heater jacket.
This could result in an unsafe operating
condition.
WARNING: If local
codes require external
application of insulation
blanket kits the
manufacturer’s instructions
included with the kit must
be carefully followed.
NOTICE: If pipe
insulation is used, ensure
that the thickness does
not exceed ½ in. (1.3 cm).
Insulation thicker than ½
in. (1.3 cm) can interfere
with the Blower Assembly
Dilution Air Holes.
Installing the water heater.
25
DO
❑ DO check inlet gas pressure to ensure that
it is within the range specified on the rating
plate.
❑ DO provide adequate air for combustion
and ventilation as discussed in the Use and
Care Manual and the CAN/CSA B 149.1
❑ DO maintain proper clearances to
combustibles as specified on the rating
plate.
❑ DO allow enough time for joint cement
vapours 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 for Canadian
Installations
CAN/CSA B149 Natural
Gas and Propane Installation Code
❑ DO contact a qualified service technician
if the main burner will not stay lit. The
burner chamber is designed to be sealed
utilizing a gasket and tamper resistant
screws.
DON’T
❑ DON’T block or restrict Combustion Air
Inlet Openings or the Flammable Vapour
Sensor located around the lower portion of
the water heater jacket.
❑ DON’T block or restrict the Blower
Assembly Dilution Air holes (see diagram
to the left).
❑ DON’T remove the Burner Access
Door unless absolutely necessary. This
should only be done by a qualified service
technician. A new burner access door
gasket must be installed on any burner
access door that has been removed.
❑ DON’T install this water heater where
standing water may occur. The base of the
water heater is meant to be mounted on a
dry surface.
❑ DON’T allow cleaners, solvents, or other
materials to come into contact with the
Flammable Vapour Sensor.
❑ DON’T operate the water heater if the
sight glass or igniter assembly grommet is
damaged or broken (see below).
During Installation of this water heater
Heat Trap
For increased energy efficiency, some
water heaters have been supplied with
factory installed 1 in. NPT heat traps in
the hot outlet line and cold water inlet
line.These heat traps may require a
minimum of one (1) 90° 1 in. NPT elbow
and may require an additional 90° 1 in.
NPT elbow or a 1 in. coupling depending
on your installation needs. See illustration
of nipples and heat traps on page 38.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
VACATION
VERY
HOT
WARM
ABC
COOLER
HOTTER
Ignitor Assembly
Grommet
Sight Glass
Flammable
Vapour Sensor
For increased energy efficiency, this water heater has been supplied with a 2 3/8 in.
section of T&P insulation. Please install the insulation as shown below.
T&P Insulation Installation
Typical Side Connect T & P Arrangement.
Slip the insulation cover over the T&P
Valve through the center hole and align
the hole in the side with the opening of the
T&P Valve.
Ensure the T&P Valve opening is not
obstructed by the insulation.
Blower assembly not shown.
26
Installation Checklist
A. Water Heater Location
B. Water Supply
C. Gas Supply
D. Relief Valve
E. Venting
❑ Close to area of vent.
❑ Drain pan installed.
❑ 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 vapours.
❑ Provisions made to protect area from water
damage.
❑ Sufficient room to service heater.
❑ Combustible materials, such as clothing,
cleaning materials, rags, etc. clear of the base
of the heater.
❑ Clearances of 1 in.(2.54 cm) from combustion
air inlet openings observed
❑ Flammable vapour sensor is not blocked.
❑ Water heater completely filled with water.
❑ Air purged from water heater and piping.
❑ Water connections tight and free of leaks.
❑ Gas line equipped with shut-off valve, union
and sediment trap.
❑ Approved pipe joint compound used.
❑ Soap and water solution used to check all
connections and fittings for possible gas leak.
❑ Gas Company inspected installation
(if required).
❑ Temperature and Pressure Relief Valve
properly installed and discharge line run to
open drain.
❑ Discharge line protected from freezing.
❑ Water Heater vented separately from all other
appliances.
❑ Flue baffle properly hung in top of heater’s
flue.
❑ Blower assembly properly installed.
❑ Proper materials and techniques used in
installation of vent system.
❑ Vent pipe properly secured to blower exhaust
coupling.
❑ Vent system supported at required intervals.
❑ Appropriate minimum clearances observed.
❑ Precautions taken to prevent moisture damage
around vent termination.
❑ Vapours from vent pipe cement and primer
have dissipated prior to applying electrical
power.
F. Wiring
❑ Correct power supply (120 V).
❑ Electrical connections tight.
❑ Heater properly grounded and proper polarity
observed.
27
(
49°C to 54°C)
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
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
Isolation valve in hot water supply line
to heating unit (not supplied with water
heater)
3/4" cold water supply
3/4" Tempered
domestic hot water
supply to house.
Gas line to water heater
6”(15.24 cm) Air Gap
Combustion Air Inlet
Openings
2 Gallon Thermal
Expansion Tank (if
required-not supplied
with water heater)
Air vent
Heat Trap
6” (15.2
cm) 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" (61 cm) 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 Code
120°F to 130°F
140°F (60°C)
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
[52°C.]), a mixing valve complying with
the Standard for Temperature Actuated
Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 must
be installed in the hot water supply line
to the house in order to reduce the scald
hazard potential.
DANGER: Any piping or components
used in the installation of this water
heater in a combination potable and
space heating application must be
suitable for use with drinking water.
NOTICE: Suitable for (potable) water
heating and space heating applications.
DO NOT use for space heating
application only.
DANGER: If this water heater is
installed in an application intended to
supply domestic hot water needs and
hot water for space heating purposes,
do not connect the heater to an existing
heating unit or components of a heating
system that have previously been used
with a non drinking water system.
Toxic chemicals such as those used for
boiler treatment may be present and
will contaminate the drinking water
supply causing possible health risks.
Never introduce toxic chemicals, such
as those used for boiler treatment, into
this system.
NOTICE: 50 ft. (15.2 m) maximum
distance from water heater to fan coil
(developed length) is recommended.
Gas Control (Thermostat)
28
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.
VACATION
WARNING
VERY
HOT
WARM
A B C
COOLER
HOTTER
This appliance does not have a pilot. It is
equipped with an ignition device which auto-
matically lights the burner. Do NOT 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 WARM indicator light is lit.
STOP! Read the safety information above
on this label.
Toggle the “ON/OFF” switch located on the
blower assembly 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
blower assembly 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 WARM indicator
light is lit.
Toggle the “ON/OFF” switch located on the blower assembly to the “OFF” position.
Toggle the “ON/OFF” switch located on the
blower assembly to the “ON” position.
2.
29
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
vapours 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 vapours lighting.
NOTICE: Flammable vapours 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(49° C)
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 (49°C).
Water temperatures above 125°F (52°
C) can cause severe burns or death from
scalding. Be sure to read and follow the
warnings outlined in this manual and on
the label located on the water heater near
the gas control thermostat.
Mixing valves are recommended for
reducing point of use water temperature
by mixing hot and cold water in branch
water lines. It is recommended that a
mixing valve complying with the Standard
for Temperature Actuated Mixing Valves
for Hot Water Distribution Systems, ASSE
1017 be installed. See page 4 for more
details and contact a licensed plumber or
the local plumbing authority for further
information.
The chart on the next page may be used
as a guide in determining the proper water
temperature for your home.
Operating Procedure
This heater is equipped with 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 blower
assembly is in the “ON” position to put the
water heater into operation. Within seconds
the hot surface ignitor should heat up, then
the gas valve should open and the main
burner ignite. After the main burner ignites,
replace the outer door. If no main burner
flame is established, the gas control will go
through three trials for ignition before going
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 blower assembly to the “OFF”
position.
30
VACATION
WARNING
VERY
HOT
WARM
A B C
COOLER
HOTTER
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 increase the temperature press and
release the "HOTTER" button until the
desired setting is reached.
NOTE: Holding down the button will not
continue to lower or raise the temperature
setting. The button must be pressed and
released for each temperature change desired.A
condition known as “stacking” or “layering”
can occur when a series of short and frequent
hot water draws are taken.
The hottest temperature water will be at the top
of the tank, closest to the outlet pipe delivering
hot water to the home.
Stacking can cause this top layer of water to be
hotter than the water toward the bottom of the
tank near the gas control (thermostat).
Therefore, always remember to test the water
temperature with your hand before use and
remember that hotter water increases the risk of
scald injury.
Also, always supervise young children or others
who are incapacitated.
The gas control (thermostat) is constructed with
a built in safety shut-off device designed to
shut off the gas supply to the burner if the main
burner flame is extinguished for any reason.
The gas control (thermostat) is also equipped
with a single use 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
shutoff 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 it 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 (49° C) More than 5 minutes
125°F (52° C) 1
1
/2 to 2 minutes
130°F (54° C) About 30 seconds
135°F (57° C) About 10 seconds
140°F (60° C) Less than 5 seconds
145°F (63° C) Less than 3 seconds
150°F (66° C) About 1
1
/2 seconds
155°F (68° C) About 1 second
Table courtesy of Shriners Burn Institute
Operating the water heater.
Temperature Setting
Display
▼ A B C
Burns on Adult Skin
WARM = approx. 70°F (21°C)
● ○ ○ ○ ○ ○
--------------------
▼ = approx. 120°F (49°C)
○ ○ ● ○ ○ ○
More than 5 minutes
A = approx. 130°F (54°C)
○ ○ ○ ● ○ ○
About 30 seconds
B = approx. 140°F (60°C)
○ ○ ○ ○ ● ○
Less than 5 seconds
C = approx. 150°F (66°C)
○ ○ ○ ○ ○ ●
About 1-1/2 seconds
C-Flashing = approx. 160°F (71°C)
○ ○ ○ ○ ○ ●
About 1/2 seconds
31
Sequence of Operation
During initial start-up or a call for heat, the
control will verify the vacuum switch is open.
Once the control verifies the blower vacuum
switch is open, the control will energize the
blower motor for the pre-purge sequence
(approximately 5 seconds).
The control will verify the blower vacuum
switch has closed, ensuring that the blower
is functioning properly and that the venting
system is not blocked.
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 gas
valve 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 valve which
will extinguish the main burner flames.
The blower motor will stay energized for an
additional 30 seconds after the control verifies
that the burner flame is extinguished in order to
clear combustion gases from the water heater.
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 vapour sensor that is monitored
continuously by the electronic control in all
modes of operation.
In the event that flammable vapours 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 Vapour Sensor to shut
down the water heater.
Vapours of Gasoline.
Vapours of certain flammable paints,
stains, and thinners.
Vapours of vent pipe Cement & Solvents.
Bleach (direct contact with flammable
vapour sensor).
Some other flammable materials and their
vapours.
If the flammable vapour 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.
32
Care and cleaning of the water heater.
Draining the Water Heater
!
CAUTION: Shut off gas to the water
heater at the manual gas 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, and venting system
should be made by service personnel
qualified in gas appliance repair.
It is suggested that a routine preventative
maintenance program be established and
followed by the user.
Inspect plastic vent pipe. Make certain
that all joints are secure and that vent
pipe supports are all in place. Check
the outdoor vent terminal to see that it is
free of obstructions, and that there is no
damage nearby casused by condensate.
Inspect dilution air inlet and combustion
air inlet openings. Make certain no
blockage exists. Clean any lint, dirt or oil
accumulation that may exist.
At least once a year, lift and release the
lever handle on the temperature pressure
relief valve, located near the top of the
water heater, to make certain the valve
operates freely. Allow several gallons to
flush through the discharge line to an open
drain.
NOTICE: If the temperature and
pressure relief valve on the water heater
discharges periodically, this may be due
to thermal expansion in a closed water
system. Contact the water supplier or
your plumbing contractor on how to
correct this. DO NOT plug the relief
valve outlet.
A water heater’s tank can act as a settling
basin for solids suspended in the water.
It is therefore not uncommon for hard
water deposits to accumulate in the bottom
of the tank. If allowed to accumulate,
these solids can cover the gas control
(thermostat) sensors, causing the sensors to
operate erratically. Because accumulated
solids can prevent the gas control
(thermostat) sensors from accurately
reading the water temperature, the water
at the fixture can be hotter than the gas
control (thermostat) setting. It is suggested
that a few quarts of water be drained from
the water heater’s tank every month to
clean the tank of these deposits.
Rapid closing of faucets or solenoid valves
in automatic water using appliances can
cause a banging noise heard in a water
pipe. Strategically located risers in the
water pipe system or water hammer
arresting devices can be used to minimize
the problem.
The anode rod should be removed from the
water heater’s tank annually for inspection
and replaced when more than 6 in. (15.2
cm) of core wire is exposed at either end
of the rod.
Make sure the cold water supply is turned
off before removing anode rod.
This water heater incorporates a
combustion shut off device that shuts
the operation of the water heater down if
undesirable combustion conditions occur,
such as the presence of flammable vapours
or blockage of the combustion air inlet
openings. Please 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.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
33
Housekeeping
Visually inspect hot surface ignitor.
To ensure sufficient ventilation and
combustion air supply, proper clearances
must be maintained.
When installed in a closet, DO NOT
block or obstruct any of the combustion
air inlet openings located around the
perimeter of the water heater. A
minimum of 1 in. is required between
these combustion air inlet openings and
any obstruction.
DO NOT obstruct or block the Flammable
Vapour Sensor. The sensor does not
require any maintenance or cleaning. DO
NOT expose to cleaning agents.
!
DANGER: Combustible
materials, such as clothing,
cleaning materials, or
flammable liquids, etc., must
not be placed against or next
to the water heater.
Burner Inspection
Visually inspect the hot surface ignitor
and main burners annually.
Through the sight glass, inspect the hot
surfaced 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.
Venting System Inspection
Inspect the vent system. Make certain that
all joints are secure and the vent system
supports are all in place,
Check the vent system terminal to see that
it is free from obstructions and there is no
damage nearby caused by condensate.
Inspect plastic vent pipe. Make certain
that all joints are secure and that vent
pipe supports are all in place. Check
the outdoor vent terminal to see that it is
free of obstructions, and that there is no
damage nearby caused by condensate.
Inspect dilution air holes. Make certain no
blockage exists. Clean any lint, dirt or oil
accumulation that may exist.
Test for spillage at the dilution air holes
after 5 minutes of burner operation. Place
a blown out match or candle close to the
dilution are holes. The smoke from the
candle or match should be drawn into the
dilution air holes. If the smoke is pushed
away from the dilution air holes, the
blower or vent system may be blocked.
Contact qualified service personnel.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
Proper burner flame pattern
34
Vacation and Extended Shut-Down
If the water heater is to remain idle for an
extended period of time, the power and
water to the appliance should be turned off
to conserve energy and prevent a build-up
of dangerous hydrogen gas.
The water heater and piping should be
drained if they might be subjected to
freezing temperatures.
After a long shut-down period, the
water heater’s operation and controls
should be checked by qualified service
personnel. Make certain the water heater
is completely filled again before placing it
in operation.
NOTICE: Refer to the
Hydrogen Gas Caution in the
Operating Instructions.
Anode Rod
This water heater is equipped with an
anode rod designed to prolong the life
of the glass lined tank. The anode rod is
slowly consumed, thereby eliminating or
minimizing corrosion of the glass lined
tank.
Water sometimes contains a high sulfate
and/or mineral content and together with
cathodic protection process can produce
a hydrogen sulfide, or rotten egg odor in
the heated water. Chlorination of the water
supply should minimize the problem.
NOTICE: Do not remove
the anode rod from the water
heater’s tank, except for
inspection and/or replacement,
as operation with the anode
rod removed will greatly
shorten the life of the glass
lined tank and will exclude
warranty coverage.
Care and cleaning of the water heater.
35
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call
for service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater
down if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of
the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent system or other
safety devices. Refer repairs to qualified service personnel.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
Problem Possible Causes What To Do
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 System or Combustion air Remove obstruction or debris from vent system or
inlet openings are restricted. combustion air inlet openings on water heater jacket.
Not enough combustion or Proper operation of the water heater requires air for
ventilation air supplied to combustion and ventilation. See the Combustion and
the water heater location. Ventilation Air information in the “Installing The
Water Heater” section of this manual.
Unable to light Air in gas line. Contact a qualified service technician to purge the air
the main burner from the gas line.
Blocked Vent System Contact a qualified service technician to evaluate vent
system for blockage.
Pressure Switch Make sure the pressure switch hose is not "kinked".
Wire connections not fully Contact a qualified service technician to confirm wire
secured. connections.
Combustion Shut-off Device Combustion shut-off device should be inspected by a
tripped, qualified service technician.
Gas Control Problem Contact a qualified service technician.
Main burner does not Gas Controls (Thermostat’s) The gas control (thermostat) should be replaced by a
stay lit single use gas shut-off device qualified service technician.
has opened.
Combustion Shutoff Device The combustion shutoff device should be inspected
Tripped. by a qualified service technician.
36
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for
service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down
if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of the
combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Problem Possible Causes What To Do
Rumbling noise Scale and sediment Drain the water heater to remove scale and sediment from
the tank. Refer to the top of page 32.
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 Control (Thermostat) Error Codes table on
page 30.
“ON/OFF” switch turned off. Turn “ON”.
Blower unplugged. Plug in. Verify power supply (120VAC).
Combustion Shutoff System 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).
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent system or other
safety devices. Refer repairs to qualified service personnel.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
37
LED Status Problem Solution
○ ○ ▼ A B C
● ○ ○ ● ○ ○
An open earth ground circuit to the
ignition system.
1. Check that the earth ground connection is properly
connected.
2. Check that the ground conductor on the water
heater is properly connected.
○ ○ ▼ 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.
○ ○ ▼ 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.
○ ○ ▼ A B C
● ○ ● ○ ○ ●
Pressure switch remained open lon-
ger than 5 seconds after the combus-
tion blower was energized.
1. Pressure switch wiring is incorrect.
2. Pressure switch tubing is not connected correctly.
3. Air intake or exhaust obstructed.
○ ○ ▼ A B C
● ○ ● ○ ● ●
Error in the hot surface ignitor cir-
cuit.
1. Check that all wiring is correct and secure.
2. Replace hot surface ignitor.
○ ○ ▼ 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 cor-
rect.
5. Combustion shut-off device tripped, contact ser-
vice agency.
○ ○ ▼ 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. Replace gas control valve.
○ ○ ▼ A B C
● ○ ● ● ● ○
Problem with the internal circuit.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
○ ○ ▼ A B C
● ● ● ● ● ●
Problem with the internal circuit.
1. Turn power to the water heater off for 10 seconds
and then back on.
2. Replace gas control valve.
○ ○ ▼ A B C
● ○ ○ ○ ● ○
Flame signal sensed out of proper
sequence.
1. Replace gas control valve.
○ ○ ▼ A B C
● ○ ○ ● ● ●
ECO activated.
1. Replace gas control valve.
○ ○ ▼ A B C
● ○ ● ● ○ ○
One of the temperature adjust
buttons stuck closed.
1. Press and release each of the buttons once.
2. Replace gas control valve.
○ ○ ▼ A B C
● ○ ● ● ○ ●
Water temperature sensor is either
open or short circuited.
1. Check that all wiring is correct and secure.
2. Replace gas control valve.
○ ○ ▼ A B C
● ○ ○ ● ○ ●
Unit shuts down.
1. Check for correct wiring to FV sensor.
2. Check for open circuits to FV sensor.
3. Replace FV sensor.
○ ○ ▼ A B C
● ○ ○ ○ ○ ●
Unit shuts down and in lockout.
1. FV sensor detected presence of ammable vapors.
2. Contact a service agency.
Gas Control (Thermostat) Status Codes
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent system or other
safety devices. Refer repairs to qualified service personnel.
38
Blower
Assembly
Flue baffle and hanger
Anode rod
** Heat Trap Nipple
** Heat
Trap
Nipple
Dip tube
Dip tube gasket
**Drain valve
Temperature and pressure
relief valve
Gas Control (Thermostat)
*Igniter
*Burner supply tube
*Burner
Jacket Door
*Hot Surface Ignitor Assembly Grommet
*Sight Glass
*Burner Access Door
*Burner Access Door Gasket
*Burner orifice
Flammable Vapour Sensor
Blower Exhaust
Coupling
*Burner Assembly Kit
The kit provides extra speed clips
and tamper resistant screws.
** May differ in actual appearance.
Replacement Parts.
For 75 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 36.
CAUTION: For your safety, DO
NOT attempt repair of gas piping, gas
control (thermostat), burners, vent
system or other safety devices. Refer
repairs to qualified service personnel.
Use only original equipment
replacement parts.
*Combustion Shut-off Device (enlarged view)
Located inside the combustion chamber.
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:
Canada
Rheem Canada Ltd./Ltee
125 Edgeware, Unit 1
` Brampton. Ontario Canada L6Y OP5
Customer Service Phone: 1-800-432-8373.
Warranty: 1-800-263-8342
Rheem Canada Ltd./Ltee
USA
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.
