!
Rheem Canada
Warning: This water heater is not suitable
for use in manufactured (mobile) homes!
Use & Care Manual
With Installation Instructions for the Installer
Residential Gas - FVIR Certified
PowerDirect Vent
Residential 40, 50, 65 & 75 Gallon Models
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!
!
Water Heaters
!
WARNING: If the information in these instructions is not followed exactly,
a fire or explosion may result causing property damage, personal injury or death.
!
FOR YOUR SAFETY!
— 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
l Do not try to light any appliance.
l Do not touch any electrical switch; do not
use any phone in your building.
l Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
l If you cannot reach your gas supplier, call
the fire department.
l 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.
Printed in USA
AP14897-3 (08/11)
Safety Information
Safety Precautions . . . . . . . 3–6
LP Gas Models . . . . . . . . . . . 5
Installation Instructions
Location . . . . . . . . . . . . . . . . . 7
Water Supply Connections . . 8
Gas Supply . . . . . . . . . . . . . . 10
Vent and Combustion
Air-Inlet . . . . . . . . . . . . . .11-28
Condensate Management . . .29
Wiring Diagram . . . . . . . . . . .30
Pipe Insulation . . . . . . . . . . . .31
Heat Traps . . . . . . . . . . . . . . .31
Installation Checklist . . . . . . .33
Potable/Space Heating . . . . 34
Operating Instructions
Lighting Instructions . . . . . . 35
Water Temperature . . . . . 36-37
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.
READ THIS MANUAL
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.
Care and Cleaning
Draining . . . . . . . . . . . . . . . . 39
Maintenance . . . . . . . . . . . . . 39
Vent System Inspection . . . . 40
Burner Inspection . . . . . . . . 40
Extended Shut-Down . . . . . .40
Troubleshooting Tips
Before You Call
For Service . . . . . . . . . . . 41-42
LED Codes . . . . . . . . . . . . . . .43
Customer Service
Parts List . . . . . . . . . . . . . . . . 44
If You Need Service . . . . . . .48
READ THE SAFETY INFORMATION
Your safety and the safety of others are very important. There
are many important safety messages in this manual and on your
appliance. Always read and obey all safety messages.
This is the safety alert symbol. Recognize this symbol
as an indication of Important Safety Information!
!
This symbol alerts you to potential hazards that can
kill or hurt you and others.
All safety messages will follow the safety alert symbol and
either the word “DANGER”, “WARNING”, “CAUTION” or
“NOTICE”.
These words mean:
!
DANGER
WARNING
!
!
CAUTION
NOTICE:
An imminently hazardous situation
that will result in death or serious
injury.
A potentially hazardous situation that
could result in death or serious injury
and/or damage to property.
A potentially hazardous situation that
may result in minor moderate injury.
Attention is called to observe specified
procedure or maintain a specific
condition.
2
IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate
this water heater. It may save you time and money. Pay particular attention to the Safety Instructions.
Failure to follow these warnings could result in serious bodily injury or death. Should you have problems
understanding the instructions in this manual, or have any questions, STOP, and get help from a
qualified service technician, or the local gas utility.
NOTICE: This water heater is equipped with a flammable 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 Code” Section of
this manual for a list of diagnostic codes.
DANGER!
PROPERLY VENT THE WATER HEATER
Failure to properly vent the water heater as outlined in the Vent and Combustion Air-Inlet
Section of the Installation Instructions in this manual can result in unsafe operation of the
water heater. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide,
never operate this water heater unless both the vent and combustion air-inlet systems are
properly installed. Be sure to inspect both the vent and combustion air-inlet for proper
installation at initial start-up; and at least periodically thereafter. Refer to the Care and
Cleaning section of this manual for more information regarding vent and combustion airinlet system inspection.
WARNING!
Gasoline, as well as other flammable materials and liquids (which include but are not
limited to adhesives, solvents, paint thinners etc.) and the 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 warning label pictured below and other labels on the
water heater, as well as the warnings printed in this manual. Failure to do so can result in
property damage, bodily injury or death.
W A R N I N G
!
FLAMMABL ES
!
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.
Flammable Vapors
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death.
3
!
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of a water heater’s combination 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.
Time/Temperature Relationship in Scalds
!
D A N G E R
HOT
BURN
Water temperature over 125°
can
cause severe burns
instantly or
death fr om 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.
F
Water Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 11/2 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 11/2 seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide in
determining the proper water temperature for your
home.
!
DANGER: Households with small children,
disabled, or elderly persons may require a 120°F
(49°C) or lower combination 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 pages 36 and 37 for more details.)
The temperature of the water in the heater can be
regulated by pressing the "COOLER" or "HOTTER"
arrow buttons on the front of the combination
gas control. To comply with safety regulations the
combination gas control was set at its lowest setting
before the water heater was shipped from the factory.
The desired water temperature must be set.
The illustration below details the approximate
water temperature for each LED indicator of the
VACATION
WARM
COOLER
A B C
WARNING
HOTTER
VERY
HOT
combination gas control's
display.
!DANGER: Hotter water
increases the potential for
Hot Water SCALDS.
Notice: Mixing valves are available for reducing point of
use water temperature by mixing hot and cold water in
branch water lines. Contact a licensed plumber or the local
plumbing authority for further information.
4
Temperature Setting
WARM = approx. 70°F (21°C)
▼ = approx. 120°F (49°C)
A = approx. 130°F (54°C)
B = approx. 140°F (60°C)
C = approx. 150°F (66°C)
C-Flashing = approx. 160°F (71°C)
Display
▼ A B C
● ○ ○ ○ ○ ○
○ ○ ● ○ ○ ○
○ ○ ○ ● ○ ○
○ ○ ○ ○ ● ○
○ ○ ○ ○ ○ ●
○ ○ ○ ○ ○ ●
Burns on Adult Skin
--------------------
More than 5 minutes
About 30 seconds
Less than 5 seconds
About 1-1/2 seconds
About 1/2 seconds
DANGER!
!
LIQUEFIED PETROLEUM (LP) AND NATURAL GAS MODELS
LP and Natural gas have an odorant added to aid in detecting a gas leak. Some people
may not physically be able to smell or recognize this odorant. If you are unsure or
unfamiliar with the smell of LP or natural gas, ask the gas supplier. Other conditions,
such as “odorant fade”, which causes the odorant to diminish in intensity, can also hide or
camouflage a gas leak.
l 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.
DANGER: If a gas leak is present or
suspected:
l Do not attempt to find the cause yourself.
l 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.
l 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.
l 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.
l 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.
l Do not try to light any appliance.
l Do not touch any electrical switch.
l Do not use any phone in your building.
l Leave the house immediately and make
sure your family and pets leave also.
l Leave the doors open for ventilation
and contact the gas supplier, a qualified
service agency or the fire department.
l 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.
l 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.
l It is recommended that more than one
method, such as soapy solution, gas
detectors, etc., be used to detect leaks in
gas applications.
5
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.
SAFETY PRECAUTIONS
Have the installer show you the location of the gas shut-off valve and how to shut it off
if necessary. Turn off the manual shut-off valve if the water heater has been subjected to
overheating, fire, flood, physical damage or if the gas supply fails to shut off.
● Read this manual entirely before installing
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.
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
IMPORTANT
Carefully inspect the water heater for damage before proceeding with the installation. Of specific
interest should be any dents in the long blue cover panel for the combustion air-inlet, PVC pipe; or
damages to the blower and the combustion air-inlet, PVC pipe assembly. If you find damage, DO
NOT install or attempt any repair to the water heater. Contact the manufacturer as detailed under "IF
YOU NEED SERVICE" section of the manual.
6
Installing the Water Heater
!
This water heater must be installed in accordance with these instructions, local codes, utility
company requirements, and/or in the absence of local codes, use the latest edition of CAN/
CSA B149 – Natural Gas and Propane Installation Code. A copy can be purchased from the
Canadian Standards Association, 5060 Spectrum Way, Mississauga, Ontario L4W5N6.
Location
Max.
2.75 in.
(7 cm)
Flammable
Vapour
Sensor
The auxiliary catch pan
installation MUST conform to
local codes, if applicable.
NOTICE: DO NOT allow
the catch pan to obstruct
the flammable vapour
sensor.
NOTICE: DO NOT allow
the flammable vapour
sensor to become submerged
in water. Make sure the
catch pan is properly
drained.
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.
Diameter of water
heater plus 2 in.
(5.1 cm) min.
The water heater should not be located
in an area where leakage from the tank
or connections will result in damage
to the area adjacent to the heater or to
lower floors of the structure.
When such areas cannot be avoided it is
recommended that a suitable catch pan,
adequately drained, must be installed
under the water heater.
The water heater must be centered in the
catch pan.
Catch pan kits are available from the
store where the water heater was purchased, or any water heater distributor.
Make certain the floor underneath the
water heater is strong enough to sufficiently support the weight of the water
heater once it is filled with water.
This 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,
thinners, solvents and/or combustible
removers.
DO NOT obstruct or block the
Flammable Vapour Sensor.
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
main burner can ignite these vapours creating a shut down condition which will
not allow the water heater to ignite.
FVIR certified gas water heaters can be
installed on a residential garage floor
without the use of an 18 in. (46 cm) stand
in accordance with the CAN/CSA B149.1
- Natural Gas and Propane Installation
Code for Canadian installations, unless
otherwise directed by Province. The
water heater must be located so it is not
subject to physical damage, for example,
by moving vehicles, area flooding, etc.
● We recommend this water heater be
installed in locations where the ambient temperatures do not exceed 100°F
(38°C).
IMPORTANT: Do not install the
water heater in a location where it may
be subjected to ambient temperatures
exceeding 125°F (52°C).
● The water heater should be installed
so as to minimize the length of plastic
vent and combustion air-inlet pipe and
the number of vent and combination
air-inlet connection fittings required.
● See Vent and Combustion Air-Inlet
Section for vent system requirements.
● Hot water lines should be insulated to
conserve water and energy.
● Protect the water heater and water lines
from exposure to freezing temperatures.
● DO NOT install this water heater out-
doors.
● Minimum clearances from combustible
construction:
FrontV
5 in.
(12.7 cm)
V "Front" Clearance dimension is mea-
sured from the water heater jacket to
the closet door.
VV "Top" clearance dimension is mea-
sured from the jacket top of the
water heater to the ceiling.
● If the water heater is to be installed
directly on carpeting, the water heater
shall be installed on a metal or wood
panel extending beyond the full width
and depth of the water heater by at
least 3 in. (7.6 cm) in all directions or,
if the water heater is to be installed
in an alcove or closet, the entire floor
must be covered by a wood or metal
panel.
Sides Rear
0 in.
(0 cm)
0 in.
(0 cm)
TopVV
12 in.
(30.5 cm)
7
Installing the Water Heater
NOTICE: The water heater
must not be installed near
an air supply containing
halogenated hydrocarbons.
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 halogenated hydrocarbons.
An air supply containing halogenated hydrocarbons may be safe to breathe, but when it
passes through a gas flame corrosive elements
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 “ther-
mal 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
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.
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 "Typical Installation" on page
9). The expansion tank is designed with an air
cushion built in that compresses as the system
pressure increases, thereby relieving the over
pressure condition and eliminating the repeated
operation of the relief valve. Other methods of
controlling thermal expansion are also available.
Contact your installing contractor, water supplier
or plumbing inspector for additional information
regarding this subject.
IMPORTANT: Do not apply
heat to the HOT or COLD
water connections. If sweat
connections are used, sweat
tubing to adapter before
fitting adapter to the cold
water connections on heater.
Any heat applied to the cold
water supply fittings will
permanently damage the
dip tube and heat traps.
8
Water Supply Connections
Refer to the following illustration for suggested
typical installation. The installation of unions
or flexible copper connectors are 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 shutoff valve in the cold
water line near the water heater.
IMPORTANT
For models equipped with a Top Cap, it is recommended that the hot and cold water piping
have a minimum vertical height of 10 inches
(25.4 cm) from the top of the water heater
before transitioning into any elbow. This
vertical height is needed in order to provide
adequate clearance for Top Cap installation and
removal.
To gain access to the hot and cold water connections on models equipped with a Top Cap,
remove the two (2) screws that secure the top
cap to the water heater then pull the Top Cap
upward and off the water heater. See illustration of Top Cap and screws on pages 32 & 44.
10"
(25.4 cm)
min.
Top Cap
Alternate installation
detail for models
equipped with a Top Cap.
NOTICE: 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.
Typical Installation
10" (25.4 cm)
min.
Combination gas control
Vent connector
Union (Optional)
Heat trap
6 in. (15.2 cm) min.
Hot water outlet to
fixtures
Water heater jacket
Temperature and
pressure relief valve
Manual gas shut-off
To gas supply
Union
Sediment trap
Cap
Jacket door
Flammable Vapour Sensor
Optional catch pan
(if required).
Drain pan pipe
to suitable drain.
1/8 in. per foot (10 mm per meter)
maximum slope down away from
the water heater for horizontal
venting.
Combustion air-inlet connector
Shut-off
valve
Thermal expansion
tank (if required)
Drain
valve
6 in. (15.2 cm) min. air gap
Blower assembly
Union (optional)
Heat trap
6 in. (15.2 cm) min.
To cold water
supply
Shut-off valve
Relief valve discharge
line to suitable open
drain.
A new combination temperature and pressure relief valve, complying with the Standard for
Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22
/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.
Relief Valve
The pressure rating of the relief valve
must not exceed 150 psi (1,034 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 must
be installed in the discharge line.
9
Installing the Water Heater
WARNING: The tank
must be full of water
before the water heater is
turned on. The water
heater warranty does not
cover damage or failure
resulting from operation
with an empty or partially
empty tank.
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.
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.
Gas Supply
A steady flow of water from all hot water
faucet(s) indicates a full water heater.
Do not allow the flammable vapour sensor to
become submerged in water.
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.
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.
WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury,
or death could result.
The branch gas supply line to the water heater
should be clean properly sized steel pipe or
other approved gas piping material.
A union or ANSI design certified semi-rigid
or flexible gas appliance connector shall be
installed in the gas line close to the water heater.
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.
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
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.
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.
(42.7 N
combination gas control 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) w.c. for
natural gas, or 14.0 in. w.c.
(3.5 kPa) w.c. for LP gas. For purposes of input
adjustment, the minimum inlet gas pressure
(with main burner on) is shown on the water
heater rating plate. If high or low gas pressures
are present, contact your gas supplier for
correction.
The factory connections to the combination gas
control should also be leak tested after the water
heater is placed in operation.
●m) in tightening the pipe joint at the
Use a soapy water solution to test for leaks
at all connections and fittings. Bubbles
indicate a gas leak that must be corrected.
10
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).
WARNING: Failure
to install a water heater
suitable for the altitude at
the location it is intended
to serve, can result in
improper operation of
the appliance resulting
in property damage and/
or producing carbon
monoxide gas, which could
result in personal injury, or
death.
DANGER: Failure to
properly install the vent
and combustion air-inlet
systems as outlined in the
Vent and Combustion AirInlet 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 the
vent and combustion airinlet systems are properly
installed as detailed in the
"Vent and Combustion
Air-Inlet" section of this
manual.
NOTICE: The combustion
air-inlet system pipe and
ttings are not required to
be certied to ULC-S636.
High Altitude
Input rating of this water heater is based on
sea level operation. At higher elevations
the actual input rate may be lower than the
value listed on the rating label due to the
derating of Natural Gas and LP Gas. This
water heater can be installed at elevations
up to 5,999 ft. (1,828 m) above sea level.
Vent and Combustion Air-Inlet
This water heater is a direct vent appliance and must be installed so that all the
air for combustion is derived directly from
the outside atmosphere and all the flue
gases are discharged to the outside atmosphere. For proper installation of the vent
and combustion air-inlet systems, follow
the instructions as detailed in this manual
and those per 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
certified to the Underwriter’s Laboratories
of Canada Standard, ULC-S636 (Current
Edition).
The vent system must be installed in
accordance with the vent system manufacturer’s installation instructions.
The first 3 ft. (90 cm) from the appliance
flue outlet must be readily accessible for
visible inspection.
NOTICE: This unit must be vented
using only 2 in. (5.1 cm), 3 in. (7.6 cm) or
4 in. (10.2 cm) diameter PVC or CPVC
pipe and fittings that are certified to
ULC-S636, refer to pages 11 through
28 for approved diameters and allowable equivalent lengths by water heater
model.
IMPORTANT: For 50 Gallon Models
with inputs of 65,000 & 47,000 Btu/
hr. and 75 Gallon Power Direct Vent
Models ONLY: The first 10 ft. (3 m)
equivalent vent system length from the
blower assembly must be of ULC-S636
approved CPVC pipe and fittings.
Use only ULC-S636 approved CPVC
pipe and fittings for the vent system
if the water heater is to be installed in
a location where it may be subjected
to ambient temperatures above 100°F
(38°C).
Vent and combustion air-inlet systems must
be adequately supported along both vertical
and horizontal lengths.
11
Installing the Water Heater
NOTICE: This unit
is equipped with a
Flammable Vapour
Sensor. Do not supply
electrical power to
the water heater
until enough time
has passed to allow
the vapours from the
primer and cement to
dissipate.
Vent and Combustion Air-Inlet continued -
Ambient Installation Temperatures and Vent System Material Specications
Up to 100°F (38°C) 100°F (38°C) to 125°F (52°C)
0 to 10 ft.
(0 to 3 m)
Equivalent Vent|
Models
40 Gallon, 40,000 &
38,000 Btu/hr. Models,
50 Gallon, 40,000 Btu/
hr. Models,
65 Gallon, 65,000 &
56,000 Btu/hr. Models
50 Gallon, 65,000 &
47,000 Btu/hr. Models,
75 Gallon, 75,100 &
70,000 Btu/hr. Models
System Length
PVC, or CPVC
CPVC PVC, or CPVC
NOTE: 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.
10 ft. to Max.
(0 m to Max.)
Equivalent Vent
System Length
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
CPVC PVC, or CPVC
10 ft. to Max.
(0 m to Max.)
Equivalent Vent
System Length
The vent and combustion air-inlet systems of this
water heater may be installed horizontally through
a wall or vertically through the roof.
Maximum unsupported length is recommended to
be no more than 4 ft. (1.22 m).
NOTICE: It is imperative that the first hanger
be located on the horizontal length immediately
adjacent to the first 90-degree elbow from the
vertical rise of vent pipe connected to the water
heater.
The support method used should isolate the vent
and combustion air-inlet pipes from floor joists or
other structural members to help prevent the transmission of noise and vibration.
Do not support, pin or otherwise secure the vent
and combustion air-inlet systems in a way that
restricts the normal thermal expansion and contraction of the chosen venting material.
If the water heater is being installed as a replacement for an existing power direct vent water heater, a thorough inspection of the existing vent and
combustion air-inlet systems must be performed
prior to any installation work. The existing vent
must be code compliant.
Verify that the correct materials as specified
in this manual have been used, and that the
minimum or maximum vent and combustion
air-inlet lengths and terminal locations as
detailed in this manual have been met.
Carefully inspect the entire vent and combus-
tion air-inlet systems for any signs of cracks
or fractures, particularly at the joints between
elbows or other fittings and the straight
length of vent pipe.
Check the vent and combustion air-inlet for
signs of sagging or other stresses in the joints
as a result of misalignment of any components in the systems.
If any of the conditions above are found, they
must be corrected in accordance with the
instructions in this manual before completing
the installation and putting the water heater
into service.
12
Maximum and Minimum Vent and Combustion Air-Inlet Lengths for Power
Direct Vent Models:
40 Gallon with Inputs of 40,000 & 38,000 Btu/h
50 Gallon with Input of 40,000 Btu/h
Read these instructions thoroughly and make
sure you understand all steps and procedures
before proceeding with the installation.
1. Connect the ULC-636 approved vent system piping to the blower assembly using
the already installed 2 in. (5.1 cm) diameter
rubber coupling and clamps.
2. Connect the combustion air-inlet system
piping to the combustion air-inlet piping tee using the 2 in. (5.1 cm) already
installed rubber coupling and clamps (See
Figure 1).
3. For vent and combustion air-inlet terminals, use the two (2), 2 in. (5.1 cm) diameter, Schedule 40, PVC, 90°, 1/4 standard
bend, ULC-S636 approved elbows supplied
with the water heater.
This water heater may also be installed with
3 in. (7.6 cm) diameter pipe and fittings for the
vent and combustion air-inlet systems.
To connect the vent system piping,
● Install a straight length of 2 in. (5.1 cm)
diameter, ULC-S636 approved pipe to the
rubber coupling on the blower assembly,
Followed by a 2 in. (5.1 cm) to 3 in.
●
(7.6 cm) diameter, ULC-S636 approved pipe
increaser fitting (See Figure 2).
For the vent terminal,
Use a 3 in. (7.6 cm) diameter, Schedule 40,
●
PVC, 90°, 1/4 standard bend, ULC-S636
approved elbow. To connect the combustion
air-inlet system piping,
Install a straight length of 2 in. (5.1 cm)
●
diameter pipe to the combustion air-inlet
piping tee coupling,
Followed by a 2 in. (5.1 cm) to 3 in.
●
(7.6 cm) diameter pipe increaser fitting (See
Figure 2).
For the combustion air-inlet terminal,
Use a 3 in. (7.6 cm) diameter,
●
Schedule 40, PVC, 90°, 1/4 standard bend
elbow.
DO NOT use unequal diameters of pipe and
fittings for the vent and combustion air-inlet
systems except as defined previously.
Note: The difference between the vent and
combustion air-inlet system equivalent lengths
must be no greater than 5 ft. (1.5 m).
IMPORTANT: Ensure that all the coupling
clamps are tightened before allowing the water
heater to operate.When using CPVC pipe and
fittings,
● Use a 90°, ULC-S636 approved elbow of the
corresponding size and material for the vent
terminal,
Use a 90° CPVC elbow for the combustion
●
air-inlet terminal.
The vent and combustion air-inlet terminals of
the water heater must be installed in the same
atmospheric pressure zone.
The minimum and maximum equivalent lengths
for the vent and combustion air-inlet systems
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 and combustion air-inlet termina-
●
tions are not included in the equivalency
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 equivalent 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.
13
Installing the Water Heater
Elbow Examples
Figure 1
Vent
Short Bend 90° Elbow
Do Not Use
Combustion air-inlet
2 in.
(5.1 cm)
pipe
diameter
Standard Bend 90° Elbow
# Min. 2 1/2 in.
(6.4 cm) to 6
in. (15.2 cm)
Max. Spacing
Figure 2
OK to Use
Vent
#
3 in.
(7.6 cm)
pipe diameter
2 in.
(5.1cm)
pipe
diameter
Long Bend 90° Elbow
OK to Use
Combustion air-inlet
#
# Min. 2 1/2 in.
(6.4 cm) to 6
in. (15.2 cm)
Max. Spacing
Table 1
From Sea Level through 5,999 ft. (1,828 m) Above Sea Level
Vent &
Combustion
Air-Inlet System
Diameter
Model
40 Gallon, 40,000
& 38,000 Btu/h
Models
50 Gallon, 40,000
Btu/hr. Models
*
Use only Rheem 3 in. (7.6 cm) concentric termination.
2 7 2 30 9 90° Elbows Concentric*
3 7 2 60 18 90° Elbows
3 7 2 50 15 Concentric*
2 7 2 30 9 90° Elbows Concentric*
3 7 2 60 18 90° Elbows
3 7 2 50 15 Concentric*
Min. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
14
Max. Allowed Equivalent
Vent & Combustion Air-Inlet
Lengths (Each Pipe Run)
Vent and Combustion
Air-Inlet System
Termination(s)Inches Feet Meters Feet Meters
Maximum and Minimum Vent and Combustion Air-Inlet Lengths For Power
Direct Vent Models:
50 Gallon With Inputs of 65,000 & 47,000 Btu/h
65 Gallon With Inputs of 65,000 & 56,000 Btu/h
75 Gallon With Inputs of 75,100 & 70,000 Btu/h
Read these instructions thoroughly and make
sure you understand all steps and procedures
before proceeding with the installation.
1. Connect the ULC-636 approved vent system piping to the blower assembly using
the already installed 3 in. (7.6 cm) diameter
rubber coupling and clamps.
2. Connect the combustion air-inlet system
piping to the combustion air-inlet piping tee using the 3 in. (7.6 cm) already
installed rubber coupling and clamps (See
Figure 3).
3. For vent and combustion air-inlet terminals, use the two (2), 3 in. (7.6 cm) diameter, Schedule 40, PVC, 90°, 1/4 standard
bend, ULC-S636 approved elbows supplied
with the water heater.
This water heater may also be installed with
4 in. (10.2 cm) diameter pipe and fittings for
the vent and combustion air-inlet systems.
To connect the vent system piping,
Install a straight length of 3 in. (7.6 cm)
●
diameter, ULC-S636 approved pipe to the
rubber coupling on the blower assembly,
● Followed by a 3 in. (7.6 cm) to 4 in.
(10.2 cm) diameter, ULC-S636 approved
pipe increaser fitting (See Figure 4).
For the vent terminal,
Use a 4 in. (10.2 cm) diameter, Schedule 40,
●
PVC, 90°, 1/4 standard bend, ULC-S636
approved elbow.
To connect the combustion air-inlet system piping,
Install a straight length of 3 in. (7.6 cm)
●
diameter pipe to the combustion air-inlet
piping tee coupling,
Followed by a 3 in. (7.6 cm) to 4 in.
●
(10.2 cm) diameter pipe increaser fitting
(See Figure 4).
For the combustion air-inlet terminal,
●
Use a 4 in. (10.2 cm) diameter, Schedule 40,
PVC, 90°, 1/4 standard bend elbow.
DO NOT use unequal diameters of pipe and
fittings for the vent and combustion air-inlet
systems except as defined previously.
NOTICE: The difference between the vent
and combustion air-inlet system equivalent
lengths must be no greater than 5 ft. (1.5 m).
IMPORTANT: Ensure that all the coupling
clamps are tight before allowing the water
heater to operate.
When using CPVC pipe and fittings,
Use a 90°, ULC-S636 approved elbow of
●
the corresponding size and material for the
vent terminal,
Use a 90° CPVC elbow for the combustion
●
air-inlet terminal elbows.
The vent and combustion air-inlet terminals
of the water heater must be installed in the
same atmospheric pressure zone.
The minimum and maximum equivalent lengths
for the vent and combustion air-inlet systems
are shown in Table 2.
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 and combustion air-inlet termina-
●
tions are not included in the equivalency
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 equivalent to 2.5 ft.
(0.76 m) of straight pipe.
DO NOT use short bend elbows. See examples
below.
15
Installing the Water Heater
Elbow Examples
Short Bend 90° Elbow
Do Not Use
Figure 3
Standard Bend 90° Elbow
OK to Use
Vent
(7.6 cm)
pipe diameter
Vent
4 in.
(10.2 cm)
pipe diameter
Long Bend 90° Elbow
OK to Use
Combustion air-inlet
3 in.
Combustion air-inlet
16
# Min. 2 1/2 in.
(6.4 cm) to 6
in. (15.2 cm)
Max. Spacing
Figure 4
#
3 in.
(7.6 cm) pipe
diameter
#
# Min. 2 1/2 in.
(6.4 cm) to 6
in. (15.2 cm)
Max. Spacing
Model
50 Gallon, 65,000
& 47,000 Btu/hr.
Models
Table 2
From Sea Level through 2,000 ft. (609 m) Above Sea Level
Vent &
Combustion
Air-Inlet
System
Min. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Diameter
3 7 2 50 15
3 7 2 40 12 Concentric*
4 7 2 100 30 90° Elbows
Max. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Vent and Combustion
Air-Inlet System
Termination(s)Inches Feet Meters Feet Meters
90° Elbows
65 Gallon, 65,000
& 56,000 Btu/hr.
Models
75 Gallon, 75,100
& 70,000 Btu/hr.
Models
From 2,000 ft. (609 m) Above Sea Level through 5,999 ft. (1,828 m) Above Sea Level
Model
50 Gallon, 65,000
& 47,000 Btu/hr.
Models
65 Gallon, 65,000
& 56,000 Btu/hr.
Models
3 8 2.5 50 15
3 8 2.5 40 12
4 8 2.5 100 30
3 8 2.5 50 15 90° Elbows
3 8 2.5 40 12 Concentric*
4 8 2.5 100 30 90° Elbows
Vent &
Combustion
Air-Inlet System
Diameter
3 7 2.5 50 15 90° Elbows
3 7 2.5 40 12 Concentric*
4 7 2.5 100 30 90° Elbows
3 8 2.5 30 9 90° Elbows
3 8 2.5 20 6 Concentric*
4 8 2.5 100 30 90° Elbows
Min. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
Max. Allowed Equivalent
Vent & Combustion Air-
Inlet Lengths (Each Pipe
Run)
90° Elbows
Concentric*
90° Elbows
Vent and Combustion
Air-Inlet System
Termination(s)Inches Feet Meters Feet Meters
75 Gallon, 75,100
& 70,000 Btu/hr.
Models
*Use only Rheem 3 in. (7.6 cm) concentric termination.
3 8 2.5 25 8 90° Elbows
3 8 2.5 20 6 Concentric*
4 8 2.5 100 30 90° Elbows
17
Installing the Water Heater
Direct Vent Terminal Clearances
G
v
A
D
E
V
B
V
L
C
FIXED
v
CLOSED
ERAB
P
O
v
F
B
B
v
B
LE
B
FIXED
CLOSED
PERABLE
O
v
J
B
A
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted
H
v
I
X
X
v
K
M
Canadian Installations
A = Clearance above grade, veranda, porch, deck
1ft. (30 cm)
1
or balcony
B = Clearance to window or door that may be
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
opened
C = Clearance to permanently closed window 1 ft. (30 cm)
D = Vertical clearance to ventilated soft located
2 ft. (61 cm)
above the terminal
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
1 ft. (30 cm) for appliances> 10,000 Btuh (3 kW)
to building or the combustion air inlet to any
other appliance
K - Clearance to a mechanical air supply inlet 6 ft. (1.83 m)
L - Clearance above paved sidewalk or paved
7 ft. (2.13 m )*
driveway located on public property
M - Clearance under veranda, porch, deck, or
1ft. (30 cm )**
balcony
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 accordance with local installa-
tion codes and the requirements of the gas supplier and the manufacturer's installation instructions."
18
Inside
If soffit vent is too close,
block off and install new vent
at another location
Inside
corner
Caulk
Caulk
12 in. (30.5 cm)
min. above grade or
anticipated snow level
6 ft. (1.8 m) Caulk zone
or to edge of window etc.,
starting within 6 ft. (1.8 m)
Rising moisture will
collect under eves
4 ft.'
(1.22 m)
Vent
Combustion
Air-Inlet
corner
NOTICE: Follow the vent system manufacturer's installation instructions for proper installation of the
vent system and combustion air-inlet systems.
Horizontal Vent Terminal Location
A vent shall not terminate:
l
where it may cause hazardous frost or ice accumulations on adjacent
property surfaces;
l
less than 7 ft. (2.1 m) above a paved sidewalk or a paved driveway that is
located on public property;
l
within 6 ft. (1.8 m) of a mechanical air-supply inlet to any building;
l
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);
l
except as required by
Installation Code
CAN/CSA B149.1 Natural gas and Propane
, any distance less than that of any gas pressure regulator
vent outlet as detailed;
l
less than 1 ft. (300 mm) above average snowfall or grade level, reference
CAN/CSA B149.1 Natural gas and Propane Installation Code;
l
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;
l
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).
Electric/Gas
service meter
Minimum
18 in. (45cm)
Non-Mechanical
(30 cm)
Air Supply
Soffit vents
1 ft.
(30 cm)
1 ft. (30 cm)
1 ft.
3 ft.
(
91 cm)
1 ft.
Vent Terminal
1 ft.
(30 cm)
(30 cm)
1 ft. (30 cm)
1 ft. (30 cm)
Minimum
6 ft. (1.8 m)
Above grade
Combustion
Air-Inlet Terminal
Mechanical
Air Supply
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
Vent Terminal Location Considerations
DO NOT install the vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under eaves, do not
locate the vent terminal on the side of a building with prevailing winter
winds.
When terminating the vent and combustion air-inlet pipes through brick
or masonry surfaces, the installation of a rust resistant sheet metal
backing plates behind the vent and combustion air-inlet terminals are
recommended.
DO NOT locate the vent terminal too close to shrubbery, as flue gasses
may damage them.
Caulk all cracks, seams and joints within 6 ft. (1.83 m) of the vent and
combustion air-inlet terminals.
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 and combustion air-inlet
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 and combustion air-inlet terminals less than
1 ft. (30 cm) above grade or average snowfall whichever is greater.
Permanently seal annular openings around the vent and combustion air-
inlet system penetrations using approved materials to prevent entry of
combustion products into the building.
19
Installing the Water Heater
Horizontal Vent and Combustion Air-Inlet 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 and combustion air-inlet terminals then make two (2)
holes through the exterior wall to accommodate the vent and combustion air-inlet pipes.
●
Maintain a minimum distance of 12 in.
(30.5 cm) between the vent and combustion
air-inlet terminal centerlines.
Insert lengths of vent and combustion air-inlet
pipes through the wall as shown.
●
Allow sufficient length of pipe to extend
beyond the exterior wall of the building for
attachment of the vent and combustion airinlet terminals.
Place the supplied 1/2 in. (1.3 cm) mesh metal
screens inside each terminal fitting.
Note: For cold climates the screens may be
removed.
Connect the terminals to the vent and combustion air-inlet pipes which are extending out of
the building.
●
Ensure that the back of the supplied terminals are flush with the outside wall surface.
Complete the installation of the remainder of
the vent system and attach it to the vent connector fitting on the water heater’s blower
assembly.
12 in. (30.5 cm) Min.
●
Horizontal lengths of the vent system
must slope downward a minimum of
1/8 in. per foot (10 mm per m).
IMPORTANT: When the vent system cannot
be sloped away from the water heater or, if
the vent system has vertical section(s), then all
horizontal sections must slope upwards a minimum of 1/8 in. per foot (10 mm per m).
DO NOT use unequal diameters of pipe and
fittings for the vent and combustion air-inlet
systems except as defined previously
NOTICE: The difference between the vent
and combustion air-inlet system equivalent
lengths must be no greater than 5 ft. (1.5 m).
Complete the installation of the remainder of
the combustion air-inlet system and attach it
to the combustion air-inlet connector fitting
on the water heater’s combustion air-inlet tube
assembly.
Support vertical and horizontal lengths of the
vent and combustion air-inlet systems as previously mentioned.
For 75 Gallon Power Direct Vent Models
ONLY:
These water heater models are supplied with
two (2) vent and combustion air-inlet termination restrictors. These restrictors help 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
and combustion air-inlet lengths of 8 ft. (2m).
IMPORTANT: Do not install the termination
restrictors in equivalent vent and/or combustion air-inlet lengths longer than 8 ft. (2 m) or
on any other Power Direct Vent model.
NOTICE: Termination Restrictors supplied
for use with 75 Gallon models ONLY.
20
Exhaust Vent
Terminal
Wind Vane
Combustion Air-Inlet
Terminal
-B-
-A-
-B-
d
.008
d
.010
Slope horizontal pipe downward
1/8 in. per foot (10 mm per m) min.
Min 1 ft.
(30.5 cm)
Optional -
Condensate
Management Drain
Port*
2 ft. x 2 ft. (60 cm x 60 cm)
Sheet Metal Shield on Brick
or Masonry Walls
Rear of Termination
Flush with Outside
of Wall
Terminals with 1/2 in. (1.3 cm)
Mesh Protective Screens Inside
and Termination Restrictors
Inside.
Note: Termination Restrictors
used on 75 Gallon
models ONLY.
Inside of
Building
Outside of
Building
*See Condensate Management Section for
additional information about optional piping.
Horizontal Vent and Combustion Air-Inlet Terminal Installation
Raise horizontal pipe upwards 1/8
in. per foot (10 mm per m) min.
Min 1 ft.
(30.5 cm)
Optional -
Condensate
Management Drain
Port*
Raise horizontal
pipe upwards 1/8 in.
per foot (10 mm per
m) min.
Inside of
Building
Raise horizontal pipe upwards
1/8 in. per foot (10 mm per
m) min.
*See Condensate Management Section for
additional information about optional piping.
Alternate Horizontal Vent and Combustion Terminal Installation
2 ft. x 2 ft. (60 cm x 60 cm)
Sheet Metal Shield on Brick or
Masonry Walls
Terminals with 1/2 in. (1.3 cm)
Mesh Protective Screens Inside.
Note: Termination restrictors
used on 75 gallon models only.
Rear of Termination
Flush with Outside
of Wall
Outside of
Building
21
Installing the Water Heater
Horizontal Vent and Combustion Air-Inlet Alternate Vent Riser Terminal
Installation
(40, 50, & 65 Gallon Models ONLY)
Read these instructions thoroughly and make sure you
understand all steps and procedures before proceeding
with the installation.
Determine the locations for the vent and combustion
air-inlet terminals then make two (2) holes through the
exterior wall to accommodate the vent and combustion
air-inlet pipes.
● Maintain a minimum horizational distance of
12 in. (30.5 cm) between the vent and combustion
air- inlet terminal centerlines.
● Maintain a minimum distance from the vent and
combustion air-inlet terminals of not less than
1 ft. (30.5 cm) above grade or average snowfall
whichever is greater.
Insert lengths of vent and combustion air-inlet pipes
through the wall as shown.
● Allow sufficient length of pipe to extend beyond the
exterior wall of the building for attachment of the
vent riser assemblies as shown.
Place the supplied 1/2 in. (1.3 cm) mesh metal screens
inside each terminal fitting.
NOTICE: For cold climates the screens may be
removed.
Connect the vent riser assemblies to the vent and
combustion air-inlet pipes which are extending out of
the building.
● Ensure that the back of the 90° elbows are flush
with the outside wall surface and that the vent and
combustion air-inlet terminations of the vent risers
are parallel with the outside wall.
IMPORTANT: Remember to include the additional
90° elbows and vertical height of vent and combustion
air-inlet pipes of the vent riser when calculating
the maximum equivalent vent and combustion airinlet system lengths. The maximum equivalent vent
and combustion air-inlet system lengths must be as
specified by Table 1 or 2.
● The vent and combustion air-inlet terminations are
not included in the equivalency calculations.
Complete the installation of the remainder of the vent
system and attach it to the vent connector fitting on the
water heater's blower assembly.
● Horizontal sections of the vent system must slope
downward toward the water heater a minimum
of 1/8 in. per foot (10 mm per m).
DO NOT use unequal diameters of pipe and fittings
for the vent and combustion air-inlet systems except as
defined previously
NOTICE: The difference between the vent and
combustion air-inlet system equivalent lengths must
be no greater than 5 ft. (1.5 m).
Complete the installation of the remainder of the
combustion air-inlet system and attach it to the
combustion air-inlet connector fitting on the water
heater's combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the vent and
combustion air-inlet systems as previously mentioned.
Front View
Option 1
Terminal assemblies to be parallel to wall.
Short piece of pipe
Exhaust
Vent
Terminal
12 in.
(30.5 cm) min.
Combustion
Air-Inlet
Terminal
22
Front View
Option 2
Terminal assemblies to be parallel to wall.
Short piece of pipe
Exhaust
Vent
Terminal
12 in.
(30.5 cm) min.
Combustion
Air-Inlet
Terminal
Side View
*
Termination Openings -
12 in. (30.5 cm) min. above
grade or anticipated snow level
*
* Clearance is equal and parallel to wall
Horizontal Vent- Alternate Concentric Terminal Installation:
Contact Manufacturer's National Service Department for Kit information, see "If You Need Service"
section.
Read these instructions thoroughly and make
sure you understand all steps and procedures
before proceeding with the installation.
Determine the location for the concentric terminal then make a 5 in. (12.7 cm) hole through the
exterior wall.
Disassemble the concentric terminal assembly.
● Note: The concentric terminal assembly
consists of an inner, straight vent pipe, an
outer, straight combustion air-inlet pipe, a
Wye tting and rain cap.
The concentric terminal assembly is designed to
accept 3 in. (7.6 cm) diameter pipe.
If 2 in. (5.1 cm) diameter pipe is used:
● Then either 2 in. x 3 in. (5.1 cm x 7.6 cm)
pipe increasers,
● Or ush bushings must be installed to the
vent and combustion air-inlet connections of
the terminal assembly.
● DO NOT use the concentric terminal assem-
bly with 4 in. (10.2 cm) vent and combustion
air-inlet systems.
From inside the building, insert the outer,
straight combustion air-inlet pipe through the
wall so that the rear of the rain cap when in-
stalled sits ush with the outside wall.
NOTICE: The concentric terminal assembly
may be reduced in length as follows:
● Measure for desired installation length then
cut the outer, straight combustion air-inlet
pipe accordingly but not less than 12 in. (30
cm).
● Measure and cut the straight inner vent pipe
of the concentric terminal assembly so it
is 13 in. (5.1 cm) longer in length than the
outer, straight combustion air-inlet pipe.
● Ensure that there is no insulation or debris in
the pipe.
Assemble the vent pipe assembly.
● Clean and cement the rain cap to the inner,
straight vent pipe.
● From the outside, slide the vent pipe with
rain cap assembly through the combustion
air-inlet pipe until the rear of the rain cap is
ush with the outside wall.
● Clean and cement the rain cap to the combus-
tion air-inlet pipe.
● Clean and cement a 3 in. (7.6 cm) diameter,
ULC-S636 approved, Schedule 40, PVC,
90° street elbow to the rain cap.
From the inside, clean and cement the wye tting to the vent and combustion air-inlet pipes of
the termination assembly.
Complete the installation of the remainder of the
vent system and attach it to the vent connector
tting on the water heater’s blower assembly.
IMPORTANT: Raise all horizontal sections
upwards a minimum of 1/8 in. per foot
(10 mm per m).
DO NOT use unequal diameters of pipe and
ttings for the vent and combustion air-inlet
systems except as dened previously
NOTICE: The difference between the vent
and combustion air-inlet system equivalent
lengths must be no greater than 5 ft. (1.5 m).
Complete the installation of the remainder of the
combustion air-inlet system and attach it to the
combustion air-inlet connector tting on the water heater’s combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the
vent and combustion air-inlet systems as previously mentioned.
IMPORTANT: Ensure that all the coupling
clamps are tight before allowing the water heater
to operate.
23
Installing the Water Heater
-B-
-A-
-B-
d
.008
d
.010
-B-
-A-
-B-
d
.008
d
.010
Vent
System
3 in. (7.6 cm)
Combustion Air-Inlet
Optional -
Condensate
Management Drain
Port*
Horizontal Vent - Concentric Terminal Installation
Inside of
Building
System
3 in. (7.6 cm)
Outside of
Building
2 ft. x 2 ft. (60 cm x 60 cm)
Sheet Metal Shield on Brick
or Masonry Walls
Rear of Rain Cap Flush with
Outside of Wall
3 in. (7.6 cm)
90° Street Elbow
Raise horizontal pipe upwards 1/8 in. per
foot (10 mm per m) min.
*See Condensate Management Section for
additional information about optional piping.
Vent
System
3 in. (7.6 cm)
Raise horizontal pipe
upwards 1/8 in. per foot
(10 mm per m) min
Combustion Air-Inlet
Optional -
Condensate
Management Drain
Port*
Alternate Horizontal Vent - Concentric Terminal Installation
24
System
3 in. (7.6 cm)
Inside of
Building
Outside of
Building
Rear of Rain Cap
Flush with Outside of
Wall
2 ft. x 2 ft. (60 cm x 60 cm)
Sheet Metal Shield on Brick
or Masonry Walls
Raise horizontal pipe
upwards 1/8 in. per foot
(10 mm per m) min.
*See Condensate Management Section for
addition information about optional piping.
3 in. (7.6 cm)
90° Street Elbow
Vertical Vent and Combustion Air-Inlet Installation
The location of the vent and combustion air-inlet terminals depends on the following minimum clearances and considerations:
Minimum 18 in. (46 cm) exposed pipe above roof.
Maximum 2 ft. (61 cm) exposed pipe above roof level without additional support for vent.
Four (4) ft. (1.22 m) from any gable, dormer or other roof structure with building interior
access (i.e., vent, window, etc.).
Within 6 ft. (1.8 m) of mechanical air supply inlet.
Maintain a minimum horizontal distance of 12 in. (30.5 cm) between the vent and
combustion air-inlet terminal centerlines.
Read these instructions thoroughly and make sure
you understand all steps and procedures before
proceeding with the installation.
Determine the locations for the vent and combustion air-inlet terminals then make two (2)
holes through the roof and interior ceiling(s) to
accommodate the vent and combustion air-inlet
pipes.
Maintain a minimum horzontal distance of
●
12 in. (31 cm) between the vent and combustion air-inlet terminals.
Assemble the vent pipe assembly.
Install the vent system and attach it to the vent
connector fitting on the water heater’s blower
assembly.
Horizontal lengths of the vent system
●
must slope towards the water heater
a minimum of 1/8 in. per foot (10 mm
per m).
Install the combustion air-inlet system and
attach it to the combustion air-inlet connector
fitting on the water heater’s combustion air-inlet
tube assembly.
Support vertical and horizontal lengths of
●
the vent and combustion air-inlet systems as
previously mentioned.
Determine the vent and combustion air-inlet terminal heights and cut the pipe accordingly.
Install adequate flashing where the vent and
●
combustion air-inlet pipes pass through the
roof.
Connect a short piece of pipe approximately
●
3 in. (7.6 cm) to the terminals and elbows.
Place the supplied 1/2 in. (1.3 cm) mesh metal
screens inside each terminal fitting then connect
a short piece of pipe approximately 3 in.
(7.6 cm) between the terminals and elbows.
NOTICE: For cold climates the screens may
be removed.
For 75 Gallon Power Direct Vent Models
ONLY:
These water heater models are supplied with two
(2) vent and combustion air-inlet termination
restrictors. These restrictors help 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 and combustion air-inlet
lengths specified in Table 2.
IMPORTANT: Do not install the termination
restrictors in equivalent vent and/or combustion
air-inlet lengths longer than 8 ft. (2 m) or on any
other Power Direct Vent model.
NOTICE: Termination Restrictors supplied for
use with 75 Gallon models ONLY.
Insert lengths of vent and combustion
●
air-inlet pipes through the ceiling wall as
shown.
NOTICE: Vent pipe, fittings, solvent cement, primers and procedures must
conform to ULC-S636.
25
Installing the Water Heater
-B-
-A-
-B-
d
.008
d
.010
-B-
-A-
-B-
d
.008
d
.010
Terminals with 1/2 in. (1.3 cm) Mesh
Protective Screens and Termination
Restrictors Inside.
Note: Termination Restrictors used on 75
Gallon models ONLY
Important: The vent terminal must not terminate
below the combustion air-inlet terminal.
*See Condensate Management Section for
additional information about optional piping.
#
Min. 18 in. (46 cm)
Above Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
Elbow
#
Exhaust Vent
Short Piece of Pipe
Combustion Air-Inlet
#
Optional - Condensate
Management Drain Port*
Exhaust Vent and /or Combustion Air-Inlet Pipe Through Roof
Terminals with 1/2 in. (1.3 cm) Mesh
Protective Screens Inside.
*See Condensate Management Section for
additional information about optional piping.
Alternate Vent and /or Combustion Air-Inlet Pipe Through Roof
26
#
#
Min. 18 in. (46 cm)
Above Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
Exhaust Vent
Short Piece of Pipe
Combustion Air-Inlet
#
Slope 1/8 in. per foot
(10 mm per m) towards
the water heater
Optional -
Condensate
Management Drain
Port*
Vertical Vent - Alternate Concentric Terminal Installation:
Contact Manufacturer's National Service Department for Kit information, see "If
You Need Service" section.
The location of the vent and combustion air-inlet terminal depends on the following minimum
clearances and considerations:
Minimum 18 in. (46 cm) exposed pipe above roof.
Maximum 2 ft. (61 cm) above roof level without additional support for vent.
Four (4) ft. (1.22 m) from any gable, dormer or other roof structure with building interior
access (i.e., vent, window, etc.).
Six (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 location for the concentric terminal
then make a 5 in. (12.7 cm) a hole through the roof
and interior ceiling(s) to accommodate the terminal,
vent and combustion air-inlet system pipes and
install a weather-seal boot/flashing (not supplied)
for 4 -1/2 in. (12.4 cm) PVC pipe.
The concentric terminal assembly is designed to
accept 3 in. (7.6 cm) diameter pipe.
If 2 in. (5.1 cm) diameter pipe is used.
● Then either 2 in. x 3 in. (5.1 cm x 7.6 cm) pipe
increasers.
● Or flush bushings must be installed to the vent
and combustion air-inlet connections of the terminal assembly.
● DO NOT use the concentric terminal assembly
with 4 in. (10.2 cm) vent and combustion airinlet systems.
Disassemble the concentric terminal assembly.
● Note: The concentric terminal assembly consists of an inner, straight vent pipe, an outer,
straight combustion air-inlet pipe, a Wye fitting
and rain cap.
From inside the building, insert the outer, straight
combustion air-inlet pipe through the weather-seal
boot flashing so that the height from the roof to the
rear of the rain cap when installed is as specified in
the diagram.
NOTICE: The concentric terminal assembly
may be reduced in length as follows:
Measure for desired installation length then
●
cut the outer, straight combustion air-inlet
pipe accordingly but not less than 12 in.
(30 cm).
Measure and cut the straight inner vent pipe
●
of the concentric terminal assembly so it is 13
in. (5.1 cm) longer in length than the outer,
straight combustion air-inlet pipe
● Ensure that there is no insulation or debris in
the pipe.
Assemble the vent pipe assembly.
● Clean and cement the rain cap to the inner,
straight vent pipe.
From the outside, slide the vent pipe with rain cap
assembly through the combustion air-inlet pipe
until the rain cap if fully seated on the pipe.
● Clean and cement the rain cap to the combustion
air-inlet pipe.
● Clean and cement a 3 in. (7.6 cm) diameter,
ULC-S636 approved, Schedule 40, PVC, 90°
street elbow to the rain cap.
● Clean and cement a short, straight section of
3 in. (7.6 cm) diameter, ULC-636 approved
straight pipe to the 90° street elbow.
● Clean and cement a 3 in. (7.6 cm) diameter,
Schedule 40, PVC, 90°, ¼ standard bend, ULCS636 approved elbow to the short, straight section of pipe.
From the inside, clean and cement the wye fitting
to the vent and combustion air-inlet pipes of the
termination assembly.
Complete the installation of the remainder of the
vent system and attach it to the vent connector fitting on the water heater’s blower assembly.
● Horizontal lengths of the vent system must
slope downward toward the water heater a
minimum of 1/8 in. per foot (10 mm per m).
27
Installing the Water Heater
-B-
-A-
-B-
d
.008
d
.010
Vertical Vent - Alternate Concentric Terminal Installation continued
Elbow
Vent
Combustion Air-Inlet
DO NOT use unequal diameters of pipe and fittings
for the vent and combustion air-inlet systems except
as defined previously.
NOTICE: The difference between the vent and
combustion air-inlet system equivalent lengths
must be no greater than 5 ft. (1.5 m).
Complete the installation of the remainder of the
combustion air-inlet system and attach it to the
combustion air-inlet connector fitting on the water
heater’s combustion air-inlet tube assembly.
Support vertical and horizontal lengths of the vent
and combustion air-inlet systems as previously mentioned.
Short Piece of Pipe
3 in. (7.6 cm)
90° Street Elbow
#
#
Min. 18 in. (46 cm)
Above Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
IMPORTANT: Ensure that all the coupling clamps
are tight before allowing the water heater to operate.
WARNING: Do not operate the water
heater with the rain cap and elbows removed or
recirculation of combustion products may occur
and/or the vent and combustion air-inlet systems
could take in water, causing damage to the water
heater. Failure to follow this warning could result
in damage to the unit, improper operation, personal injury, or death.
Short Piece of Pipe
Elbow
Vent
Combustion Air-Inlet
Slope 1/8 in. per foot
(10 mm per m) towards
the water heater
3 in. (7.6 cm)
90° Street Elbow
#
#
Min. 18 in. (46 cm)
Above Roof
and
Max. 24 in. (61 cm)
Above Roof
(Without Additional
Support)
Optional -
Condensate
Management Drain
Port*
Concentric Vent and /or Combustion Air-Inlet Pipe
Through Roof
*See Condensate Management Section for
additional information about optional piping.
28
Optional -
Condensate
-A-
-B-
d
.008
d
.010
-B-
Management Drain
Port*
Alternate Concentric Vent and /or Combustion Air-Inlet
Pipe Through Roof
Condensate Management - Optional Piping
Cap
There is no condensate collection and disposal
required for Rheem water heaters under
most conditions. Installations where the
vent system length is short or where 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. The images on Page 21 show
the recommended vent pipe slope of no less
than 1/8 in. 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.
CAUTION: Make sure the drain port
cap is securely in place.
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, slope the vent pipe toward the
water heater 1/8 in. per foot (10 mm per m)
minimum and condensate management means
as follows:
Remove the cap from vent pipe coupling, drain
port on the blower assembly.
• Connect 1/2 in. I.D, flexible, PVC (or
equivalent material), clear tubing to
the drain port. Note: The tubing must
be of sufficient length to reach a floor
drain, outside the building or other
required condensate disposal termination
requirements (Refer to local codes).
• Loop the drain tube so that it has a circular
trap and secure the top and bottom of the
loop with wire ties or plastic zip ties as
shown. DO NOT restrict any portion of the
drain tube. The loop and all sections of the
tube must not be restricted or collasped.
From Drain Port
Wire or Zip Ties
• Fill the drain tube with water so that no
combustion gases might vent into the room.
• Route the drain tube to a floor drain or
outside the building or other required
condensate disposal termination
requirements (Refer to local codes).
Water Filled
To Floor Drain
Cap
29
Installing the Water Heater
Wiring
This water heater may be connected to electric
service with the power cord provided
(DO NOT use an extension cord). A grounding receptacle is required.
CONNECTOR DIAGRAM
SCHÉMA DES CONNEXIONS
120 VAC PLUG FOR POWERVENT
BLOWER ASSEMBLY
PRISE DE 120 VCA POUR
L’ENSEMBLE DE
SOUFFLEUR D’ÉVENT MÉCHANIQUE
BLOWER
SOUFFLEUR
POWER
VENT BLOWER
ASSEMBLY
ENSEMBLE DU
SOUFFLEUR
D’ÉVENT
MÉCANIQUE
MOT
H
G
N
TEMPERATURE
SWITCH NC
CHANGEMENT DE
TEMPÉRATURE
SCREW
GND VIS
DE MISE
À LA TERRE
FLAMMABLE
VAPOR SENSOR
DÉTECTEUR DE
VAPEUR
INFLAMMABLE
FV
W
1
BK
2
BK
3
W
4
BK
G
W
VAC
SW NO
CONTACTEUR À
DÉPRESSION
6 PIN CONNECTOR
CONNECTEUR À
6 BROCHES
IGNITER AND
FLAME SENSOR
ALLUMEUR ET
CAPTEUR DE
FLAMME
W
VAC
SW NC
ON/OFF SWITCH
CONTACTEUR
MARCHE/ARRÉT
BK R Y BL G
W
1 2 3 4 5 6
1 2 3 4 5 6
W BK R Y BL G
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 Canadian Electrical Code
CSA C22.1. Refer to the figures below for
water heater internal wiring.
H
ON/OFF
SWITCH
CONTACTEUR
MARCHE/ARRÉT
SCHEMATIC DIAGRAM
SCHÉMA DE CABLÂGE
120 VAC
IGNITER
ALLUMEUR
W
1
W
BK
2
FLAMMABLE VAPOR SENSOR
BK
3
4
BL
1
N/C
2
BK
3
GAS VALVE
SOUPAPE DE GAZ
R
4
Y
5
W
INTELLI-VENT ELECTRONIC CONTROL
CONTRÔLE ÉLECTRONIQE INTELLI-VENT
6
DÉTECTEUR DE VAPEUR INFLAMMABLE
W
TEMPERATURE
SWITCH NC
CHANGEMENT DE
TEMPÉRATURE
MOT
FLAME SENSOR
CAPTEUR DE FLAMME
VAC
SW NO
CONTACTEUR
À DÉPRESSION
BLOWER
SOUFFLEUR
VAC
SW NC
N
30
J2
BL
1
1
2
2
GAS VALVE
SOUPAPE DE GAZ
GND
3
4
5
6
INTELLI-VENT ELECTRONIC CONTROL
CONTRÔLE ÉLECTRONIQUE INTELLI-VENT
ANY REPLACEMENT IGNITOR CABLE MUST BE RATED AT 250º C
TOUT CÂBLE D’ALLUMAGE DE REMPLACEMENT DOIT ÊTRE
ÉTALONNÉ Á 250º C
N/C
BK
3
R
4
Y
5
W
6
WIRE HARNESS THAT RUNS FROM BLOWER ASSEMBLY
TO WIPER CONTROL GAS VALVE
FAISCEAU DE CÂBLAGE ENTRE L’ENSEMBLE DU
SOUFFLEUR ET LA INTELLI-VENT DE LA SOUPAPE DE
G
CONTRÔLE DU GAZ
120V 50/60 Hz LESS THAN 5 AMPS
NOTE: IF ANY OF THE ORIGINAL WIRE SUPPLIED WITH THE APPLIANCE
MUST BE REPLACED, IT MUST BE REPLACED WITH A 18 GA, 600 V,
105º C WIRE.
REMARQUE: SI UNE PARTIE QUELCONQUE DU CÂBLAGE ORIGINAL
H N
FOURNI AVEC L’APPAREIL DOIT ÊTRE REMPLACÉE, ELLE DOIT ÊTRE
REMPLACÉE AVEC UN FIL DE CALIBRE 18, 600 VCA, 105º C.
CAUTION! Wiring errors can cause improper and dangerous operation.
VERIFY PROPER OPERATION AFTER SERVICING!
BK = BLACK/NOIR
BL = BLUE/BLEU
G = GREEN/VERT
R = RED/ROUGE
W = WHITE/BLANC
Y = YELLOW/JAUNE
GND
AX4944-3
Insulation Blankets
Insulation blankets, available to the general pub-
lic, 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:
l
DO NOT cover the operating or warning
labels attached to the water heater or attempt
to relocate them on the exterior of insulation
blanket.
l DO NOT apply insulation to the top of the
water heater. This will interfere with the safe
operation of the blower assembly.
l DO NOT cover the burner access door, jacket
door, combination gas control (thermostat) or
pressure and temperature relief valve.
l DO NOT apply insulation to the area where
the Flammable Vapour Sensor is located. This
area must be unobstructed so as not to restrict
air flow to the sensor.
l Inspect the insulation blanket frequently mak-
ing certain it has not sagged and it is not restricting the air flow to the Flammable Vapour sensor
located around the lower perimeter of the water
heater jacket. This could result in an unsafe
operating condition.
Hot and Cold Pipe Insulation Installation
Typical vertical piping arrangement
For increased energy efficiency, some water
heaters have been supplied with
two 24 in. (61 cm) long sections of pipe
insulation.
T&P Insulation Installation
For increased energy efficiency, this water heater has been supplied with a 2 3/8” section of T&P
insulation. Please install the insulation as shown below.
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.
Typical horizontal piping arrangement
(Piping for Top Cap NOT shown)
Please install the insulation, according to
the illustrations above, that best meets your
requirements.
Slip the insulation cover
over the T&P Valve
through the center hole
and align the hole in the
side with the opening of
the T&P Valve.
Ensure the T&P Valve
opening is not obstructed
by the insulation.
Typical Side Connect T & P Arrangement.
Ensure the T&P Valve
opening is not obstructed
by the insulation.
Typical Top Connect T & P Arrangement.
31
VACATION
VERY
HOT
WARM
A B C
COOLER
HOTTER
Installing the Water Heater
Heat Traps
For increased energy efficiency, some water
heaters have been supplied with factory installed
3/4 in. or 1 in. NPT heat trap fittings in the hot
outlet line and cold water inlet line. These heat
trap fittings may require a minimum of one (1)
an additional 90°, 3/4 in. or 1 in. NPT elbow or
a 3/4 in. or 1 in. coupling depending on your
model of water heater and installation needs.
See illustration of nipples and heat traps on page
44.
90°, 3/4 in. or 1 in. NPT elbow and may require
Top Cap Installation (For Certain Models Only)
Read these instructions thoroughly and make
sure you understand all the steps and procedures
before proceeding with the installation.
Carefully remove the Top Cap from the water
heater carton. Install the water heater as speci-
ed per this Use & Care Manual. Note: Also see
information as detailed in “Water Supply Connections” section.
Locate the small plactic bag containing the three
(3) Dual Lock® strips and two (2) sheet metal
screws to be used to attach the Top Cap in the
Use & Care Manual bag. Peel off one side of the
Dual Lock® strips and rmly press near the Top
Cap mounting tabs (do not cover holes) and the
inside center front of the rim on the Top Cap.
See diagram for detail.
Peel off the other side of the Dual Lock® strips
and place the Top Cap on the top front center of
the water heater ensuring that it is aligned cor-
rectly and properly positioned on top of the water
heater. Press rmly to ensure proper attachment
is made.
Align holes in mounting tabs on the Top Cap with
the holes in the top of the heater then secure the
Top Cap to the water heater with the two (2) #8
sheet metal screws (supplied).
IMPORTANT: Do not over tighten the screws
as this may damage the Top Cap.
2 screws
(mounting
tabs)
3 Dual Lock®
Strips
Top Cap View
Outside
Inside
Inside Center
Front
32
During Installation of this water heater . . .
DO
o
DO check inlet gas pressure to ensure that it is
within the range specified on the rating plate.
o DO maintain proper clearances to combustibles
as specified on the rating plate.
o DO allow enough time for joint cement vapours
to dissipate BEFORE applying power to the
water heater.
o DO ensure that the venting system complies
with the guidelines found in the Use and Care
Manual and in the CAN/CSA - B149.1 Natural
Gas and Propane Installation Code.
o 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.
Burner Access
Door Grommet
Flammable Vapour
Sensor
Sight Glass
DON’T
o DON’T block or restrict the Flammable Vapour
Sensor located around the lower portion of the water
heater jacket.
o 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.
o 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.
o DON’T allow cleaners, solvents, or other materials
to come into contact with the Flammable Vapour
Sensor.
o DON’T operate the water heater if the sight glass or
burner access door grommet is damaged or broken.
Installation Checklist
A. Water Heater Location
o
In a location where the vent and combustion
air-inlet systems will be within the requirements
specified in this manual.
o
Indoors and protected from freezing temperatures.
o
Proper clearance from combustible surfaces
observed and water heater not installed on carpeted floor.
o
Air supply free of corrosive elements and flammable vapours.
B. Water Supply
o
Water heater completely filled with water.
o
Air purged from water heater and piping.
C. Gas Supply
o
Gas line equipped with shut-off valve, union and
sediment trap.
o
Approved pipe joint compound used.
o
Provisions made to protect area from water damage.
o
Catch pan installed.
o
Sufficient room to service the water heater.
o
Combustible materials, such as clothing, cleaning
materials, rags, etc. clear of the base of the water
heater.
o
Flammable vapour sensor is not blocked.
o
Water connections tight and free of leaks.
o
Soap and water solution used to check all connections and fittings for possible gas leak.
o
Gas Company inspected installation (if required).
D. Relief Valve
o
Temperature and Pressure Relief Valve properly
installed and discharge line run to open drain.
o
Discharge line protected from freezing.
E. Venting and Combustion Air-Inlet Systems
o
Water Heater vented separately from all other
appliances.
o
Blower assembly properly installed.
o
Proper materials and techniques used in the instal-
lation of the vent and combustion air-inlet systems.
o
Vent pipe properly secured to the exhaust connector
of the blower assembly.
o
Vent and combination air-inlet systems supported
at required intervals.
o
Appropriate minimum clearances observed.
o
Precautions taken to prevent moisture damage
around vent termination.
o
Vapours from nonmetallic pipe cement and primer
have dissipated prior to applying electrical power.
o
Combustion Air-Inlet pipe properly secured to the
combustion air-inlet piping tee.
F. Wiring
o
Correct power supply (120 VAC).
o
Electrical connections tight.
o
Water Heater properly grounded and proper polar-
ity observed.
33
Supplemental Instructions for Gas Water Heaters
Installed in Potable Water/Space Heating Applications
Local codes or plumbing authority requirements may vary from the instructions or diagrams provided
in this manual and take precedent over these instructions.
Hot water
supply to
house
Hot water
supply to
heating
unit
From HOT
outlet on
water heater
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
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 or tempering valve
must be installed in the hot water
supply line to the house in order to
reduce the scald hazard potential.
DANGER: Any piping or components
used in the installation of this water
heater in a combination potable and
space heating application must be
suitable for use with drinking water.
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.
Tee fitting for horizontal hot
water supply lines.
Typical Piping Diagram for Combination Potable/Space Heating Installation
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.
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
Isolation valve in hot water supply line
to heating unit (not supplied with water
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
Temperature and pressure relief
valve, as required by CAN/CSA-
Gas line to water heater
Temperature and pressure relief
valve discharge line
Combination gas control
required.
heater)
B149.1
Minimum of 2 ft. (61 cm) developed
length of 3/4" pipe.
Air vent
Gas Fired
Water Heater
3/4" ShutOff Valve
(Typ.)
3/4" Tempered
domestic hot water
supply to house.
Heat Trap
6 in. (15.2
cm) Min.
Drain valve not supplied with
water heater
Isolation valve in
cold water return line
from heating unit (not
supplied with water
heater)
3/4" Shut-Off Valve (Typ.)
2 Gallon Thermal
Expansion Tank (if
required-not supplied
with water heater)
140° F (60° C)
120° F to 130° F
49° C to 54° C
3/4" HWS & HWR
to Heating Coil.
Pressure Gauge
3/4" Check Valve with 1/8" Hole
3/4" Shut-Off Valve (Typ.)
3/4" cold water supply
Air Handler
Hot water
to space heater
Hot water coil
All bronze pump.
Check valve
internal in pump.
Air bleed valve.
Water Sample Tap.
To HVAC Unit.
FAN
T
ON
OFF
HEAT
COOL
Water heater drain pan
installed, if required
Flammable Vapour
22
34
Sensor
6 in. (15.2 cm)
air Gap
Lighting the Water Heater
Before operating this water heater, be sure to read and follow the instructions on the label pictured below and
all other labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in
unsafe operation of the water heater resulting in property damage, personal injury, or death. Should you have
any problems reading or following the instructions in this manual, STOP, and get help from a qualified person.
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING:
Manual instructions exactly, a re or explosion may result causing property
If you do not follow these instructions and the Use & Care
damage, personal injury or loss of life.
This appliance does not have a pilot. It is
A.
equipped with an ignition device which automatically lights the burner. Do NOT try to light
the burner by hand.
BEFORE PUTTING THIS APPLIANCE INTO
B.
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.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electric switch; do
not use any phone in your building.
Immediately call your gas supplier
from a neighbor’s phone. Follow the
OPERATING INSTRUCTIONS
Stop! Read the safety information above
1.
on this label.
Toggle the “ON/OFF” switch located on the
2.
blower assembly to the “ON” position.
Set the thermostat to the lowest setting
3.
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.
4.
Toggle the “ON/OFF” switch located on the
blower assembly to the “OFF” position.
5.
Turn o all electrical power to the appliance.
This appliance is equipped with a Hot
6.
Surface Ignition System which automatically lights the burner. Do NOT open
the inner door of this appliance and try to
light the burner by hand!
Wait ve (5) minutes to clear out any gas.
7.
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 nex t step.
gas supplier’s instructions.
If you cannot reach your gas
supplier, call the re depar tment.
Use only your hand to push in the gas
C.
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.
Do not use this appliance if any part has
D.
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!
Turn on all electrica l power to the appliance.
8.
Toggle the “ON/OFF” switch located on the
9.
blower assembly to the “ON” position.
Set thermostat to the desired temperature
10.
setti ng by pressing the COOLER and
HOT TER buttons at the same time and
holdi ng them for (1) second. Depress the
HOT TER button until the desired
temperature displ ay setting is lit. The
preferre d starting point for temperature
setti ng is indicated by on the thermostat.
If the appliance will not operate, follow
11.
the instructions “TO TURN OFF GAS TO
APPLIANCE” and call your service
technician or gas supplier.
VACATION
COOLER
A B C
WARNING
HOTTER
VERY
HOT
WARM
TO TURN GAS OFF TO THE APPLIANCE
1.
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.
2.
Toggle the “ON/OFF” switch located on the blower assembly to the “OFF” position.
3.
Turn o all electrical power to the appliance.
35
Operating the Water Heater
!
CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not
been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY
FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet
be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water
system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the water
begins to flow. Do not smoke or use an open flame near the faucet at the time it is open.
Safety Precautions
Do turn off manual gas shut-off valve if water heater
has been subjected to over heating, fire, flood, physical damage or if the gas supply fails to shut off.
Do Not 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 newspa-
per, 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 follow-
ing the Operating Instructions or the Care and
Cleaning section, it is recommended that a qualified
person or serviceman perform the work.
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 combination gas
control (thermostat) setting
to prevent contact with
unsafe water
temperatures.
36
Operating Procedure
This water 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 view through the sight glass 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
Water Temperature Setting
The temperature of the water in the water
heater can be regulated by pressing the
buttons on the front of the combination
gas control (thermostat).
Safety and energy conservation are factors
to be considered when selecting the water
temperature setting of the water heater’s
combination gas control (thermostat). The
lower the temperature setting, the greater
the savings in energy and operating costs.
To comply with safety regulations, the
combination gas control (thermostat) was
set at its lowest setting before the water
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 combination 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 located on the side of the blower
assembly to the “OFF” position. See diagram on page 44 for location of blower
assembly.
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 combination gas control (thermostat).
Mixing valves are available for reducing
point of use water temperature by mixing
hot and cold water in branch water lines.
Water Temperature Setting…
!
Contact a licensed plumber or the local plumbing authority for further information.
The charts may be used as a guide in determining the appropriate water temperature for your
home.
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 combination 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.
NOTICE: Holding down the button will not
continue to lower or raise the temperature
setting. The button must be pressed and
released for each temperature change
desired.
Time/Temperature Relationship in Scalds
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 combination 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 combination gas control (thermostat) is
constructed with a built in safety shutoff device
designed to shut off the gas supply to the burner
if the main burner is extinguished for any reason.
The combination gas control (thermostat) is also
equipped with a single use gas shutoff 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 (shutoff) valve, and do not operate the water
heater again until is has been checked by a
qualified service technician.
VACATION
WARM
COOLER
A B C
VERY
HOTTER
HOT
Water Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 11/2 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 11/2 seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
Temperature Setting
WARM = approx. 70°F (21°C)
▼ = approx. 120°F (49°C)
A = approx. 130°F (54°C)
B = approx. 140°F (60°C)
C = approx. 150°F (66°C)
C-Flashing = approx. 160°F (71°C)
WARNING
Display
▼ A B C
● ○ ○ ○ ○ ○
○ ○ ● ○ ○ ○
○ ○ ○ ● ○ ○
○ ○ ○ ○ ● ○
○ ○ ○ ○ ○ ●
○ ○ ○ ○ ○ ●
Burns on Adult Skin
--------------------
More than 5 minutes
About 30 seconds
Less than 5 seconds
About 1-1/2 seconds
About 1/2 seconds
37
Care and Cleaning of the Water Heater
Sequence of Operation
During initial start-up or a call for heat,
the control will verify the vent vacuum
switch is open.
Once the control verifies the vent vacuum
switch is open, the control will energize
the blower motor for the pre-purge
sequence (approximately 5 seconds).
The control will verify the vent 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 main 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.
38
Draining the Water Heater
!
DANGER: Before
manually operating the
relief valve, make certain
no one will be exposed to
the danger of the hot
water released by the
valve. The water may be
hot enough to create a
scald hazard. The water
should be released into a
suitable drain to prevent
injury or property damage.
DANGER: Hotter
water increases the
potential for Hot Water
Scalds.
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.
!
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.
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 combination gas control (thermostat),
burner, relief valve, internal flue-way, vent and
combustion air-inlet systems be made by service
personnel qualified in gas appliance repair.
It is suggested that a routine preventative
maintenance program be established and
followed by the user.
Inspect the combustion air-inlet and vent
systems. Make certain that all joints are secure
and that combustion air-inlet and vent pipe
supports are all in place. Check the outdoor
combustion air-inlet and vent terminals to see
that they are free of obstructions, and that there is
no damage nearby caused by condensate.
Periodically, 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
Before turning off the cold water supply to
the water heater, open a hot water faucet
allowing sufficient cold water into the tank
to prevent the risk of a scald injury while
draining the water heater. Once the water
in the tank is no longer hot, turn off the cold
water supply to the water heater. Open a hot
water faucet or lift the handle on the relief
valve to admit air to the tank.
Attach a garden hose to the drain valve on the
water heater and direct the stream of water to a
drain. Open the valve.
therefore not uncommon for hard water deposits
to accumulate in the bottom of the tank. If
allowed to accumulate, these solids can cover
the combination gas control (thermostat) sensors,
causing the sensors to operate erratically.
Because accumulated solids can prevent the
combination gas control (thermostat) sensors
from accurately reading the water temperature,
the water at the fixture can be hotter than the
combination 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 periodically,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 and/or
vent systems. Please contact a qualified service
technician if this occurs.
39
Care and Cleaning of the Water Heater
!
DANGER:
Combustible materials,
such as clothing, cleaning
materials, or flammable
liquids, etc., must not be
placed against or next to
the water heater.
Representative burner
flame pattern
Housekeeping
Make sure the Flammable Vapour Sensor
is not blocked or obstructed.
DO NOT expose the Flammable Vapour
Sensor to water, solvents or cleaning
s.
agent
Combustion Air-Inlet and Vent System Inspection
Inspect the combustion air-inlet and vent
systems. Make certain that all joints are
secure and that combustion air-inlet and
vent system supports are all in place.
Check the outdoor combustion air-inlet and
vent system terminals to see that they are
free of obstructions, and that there is no
damage nearby caused by condensate.
Burner Inspection
Through the sight glass, visually inspect
the hot surface ignitor and main burner
periodically.
Inspect the hot surface ignitor with the
main burner off and inspect the main
burner while firing.
If any unusual burner operation is noted,
the water heater should be shut off
until qualified service assistance can be
obtained.
!
CAUTION: For your safety, cleaning
of the burner must be performed only
by qualified service personnel, as it
involves the disconnection of gas piping
and leak testing. The burner chamber is
a sealed area. If the burner access door
is removed, the burner access door gas-
ket 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.
NOTICE: Refer to the
Hydrogen Gas Caution in
the Operating Instructions.
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.
40
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.
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.
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 shut off devices 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 vent
air-inlet systems. Please contact a Qualified Service Technician if this occurs.
Problem Possible Causes What To Do
and/or combustion
Condensation This usually happens when
a new heater is filled for the
first time.
This is normal, after the water in the
tank warms up, the condensation will
disappear. Refer to page 10 for more
information.
Moisture from the products of
combustion condensing on the
tank surface.
An undersized water heater
will cause condensation.
This is normal and will disappear
in time. Refer to page 10 for more
information.
Use a water heater size that meets the
requirements of your needs.
Yellow flame or soot Scale on top of the burner. Contact a qualified service technician
to remove scale.
Vent and/or combustion airinlet systems are blocked.
Remove obstruction or debris from
vent and/or combustion air-inlet
systems.
Unable to light the main burner Air in gas line. Contact a qualified service technician
to purge the air from the gas line.
Blocked vent system. Contact a qualified service technician
to evaluate vent system for blockage.
Blocked combustion air-inlet
system.
Contact a qualied service technician
to evaluate the combustion air-inlet
system for blockage.
Pressure switches. Make sure the pressure switch hoses
are not "kinked".
Wire connection(s) not fully
secured.
Combustion shutoff device
tripped.
Contact a qualified service technician
to confirm wire connections.
Combustion Shutoff Device(s) should
be inspected by a qualified service
technician.
Gas control problem. Contact a qualified service technician.
Main burner does not stay lit Energy shutoff device open. The combination gas control
(thermostat) should be replaced by a
qualified service technician.
Combustion shutoff device
tripped.
The combustion shutoff device should
be inspected by a qualified service
technician.
CAUTION: 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, combination gas control (thermostat), burners, vent and/or
combustion air-inlet systems or other safety devices. Refer repairs to qualified service personnel.
41
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 shut off devices that shut the operation of the water heater down if undesirable
combustion conditions occur, such as the presence of flammable vapours or blockage of the vent and /or
combustion air-inlet systems. Please contact a Qualified Service Technician if this occurs.
Problem Possible Causes What to Do
Rumbling noise
Relief valve producing popping
noise or draining
Not enough or no
hot water
Water is too hot
Scale and sediment. Drain the water heater to remove scale and
sediment from the tank. Refer to page 39.
Pressure build up caused by thermal
expansion in a closed system.
This is an unacceptable condition and must
be corrected. Contact the water supplier or
plumbing contractor on how to correct this.
Do not plug the relief valve outlet.
Water usage may have exceeded the
capacity of the water heater.
Wait for the water heater to recover after an
abnormal demand.
Low gas pressure. Check gas supply pressure and manifold
pressure.
The combination gas control
(thermostat) may be set too low.
See the "Water Temperature Setting"of the
water heater section of this manual.
Leaking or open hot water faucets. Make sure all faucets are closed.
Check valve error codes. Refer to gas valve error code table on page 43.
"ON / OFF" switch turned off. Turn "ON".
Blower unplugged. Plug in, verify power supply (120 VAC).
Combustion Shutoff Device tripped. Contact a qualied service technician.
The combination gas control
(thermostat) is set too high.
Combination gas control (thermostat)
is defective.
See the "Water Temperature Setting"of the
water heater section of this manual.
Contact a qualied service technician
to replace the combination gas control
(thermostat).
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, combination gas control (thermostat), burners, vent and or
combustion air-inlet systems or other safety devices. Refer repairs to qualified service personnel.
42
Gas Valve LED Codes
LED Status Problem Solution
○ ○ ▼ A B C
● ○ ○ ● ○ ○
○ ○ ▼ A B C
● ○ ● ○ ● ○
○ ○ ▼ A B C
● ○ ● ○ ○ ○
○ ○ ▼ A B C
● ○ ● ○ ○ ●
○ ○ ▼ A B C
● ○ ● ○ ● ●
○ ○ ▼ A B C
● ○ ○ ● ● ○
○ ○ ▼ A B C
● ○ ○ ○ ● ●
○ ○ ▼ A B C
● ○ ● ● ● ○
○ ○ ▼ A B C
● ● ● ● ● ●
○ ○ ▼ A B C
● ○ ○ ○ ● ○
○ ○ ▼ A B C
● ○ ○ ● ● ●
○ ○ ▼ A B C
● ○ ● ● ○ ○
○ ○ ▼ A B C
● ○ ● ● ○ ●
○ ○ ▼ A B C
● ○ ○ ● ○ ●
○ ○ ▼ A B C
● ○ ○ ○ ○ ●
An open earth ground circuit to the
ignition system.
Wiring error or a high resistance to
earth ground.
Pressure switch remained closed longer than 5 seconds after the call for
heat began.
Pressure switch remained opened longer than 5 seconds after the combustion blower was energized.
Error in the hot surface ignitor circuit. 1. Check that all wiring is correct and secure.
System in lockout.
Problem in the combination gas valve
driver circuit.
Problem with the internal circuit. 1. Turn power to the water heater off for 10 seconds and
Problem with the internal circuit. 1. Turn power to the water heater off for 10 seconds and
Flame signal sensed out of
proper sequence.
ECO activated. 1. Replace the combination gas control (thermostat)
One of the temperature adjust
buttons stuck closed.
Water temperature sensor is either
open or short circuited.
Unit shuts down. 1. Check for correct wiring to FV sensor.
Unit shuts down and in lockout.
1. Check that the earth ground connection is properly
connected.
2. Check that the ground conductor on the water heater
is properly connected.
1. Check proper connection of line
neutral and hot wires.
2. Check that the water heater is securely connected to
earth ground.
1. Verify that the wiring to the pressure switch(es) is
correct.
2. Replace the pressure switch(es).
1. Verify that the wiring to the pressure switch(es) is
correct.
2. Verify that the wiring to the pressure switch(es) is
connected correctly.
3. Check the vent and / or combustion air-inlet systems
for obstructions.
2. Replace hot surface ignitor.
1. Gas supply is off or too low to operate. Turn on the
gas supply and / or increase the inlet gas supply pressure.
2. Hot surface ignitor not positioned
correctly.
3. Low voltage to the water heater. Increase supply voltage to rated voltage.
4. Electric polarity to unit is incorrect - test and correct.
5. Check the vent and/or the combustion air-inlet systems for obstructions.
1. Turn power to the water heater off for 10 seconds and
then back on.
2. Replace the combination gas control (thermostat)
then back on.
2. Replace the combination gas control (thermostat)
then back on.
2. Replace the combination gas control (thermostat)
1. Replace the combination gas control (thermostat)
1. Press and release each of the buttons once.
2. Replace the combination gas control (thermostat).
1. Check that all wiring is correct and secure.
2. Replace the combination gas control (thermostat)
2. Check for open circuits to FV sensor.
3. Replace FV sensor.
1. FV sensor detected presence of ammable
vapours.
2. Contact a service agency.
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, combination gas control thermostat, burners, vent and/or
combustion air-inlet systems or other safety devices. Refer repairs to qualified service personnel.
43
Replacement Parts
For 40, 50, 65 and 75 Gallon Models equipped for use with Natural or Liquified Petroleum/LP gas.
Instructions For Placing a Parts Order
Combustion
Air-Inlet
Coupling
** Rubber
Coupling
All parts orders should include:
The model and serial number of the water
heater from the rating plate.
Specify type of gas (Natural or Liquefied
Petroleum/LP gas)
as marked on the rating plate.
Part description (as noted below) and num-
ber of parts desired.
Refer to page 48.
Blower
Assembly
** Heat Trap Nipples
Top Cap
(Certain models only)
CAUTION: For your safety, DO NOT
attempt repair of gas piping, gas control
(thermostat), burners, vent connectors or
other safety devices. Refer repairs to qualified
service personnel.
Use only original equipment replacement
parts.
*Burner Assembly Kit
Anode Rod
Combustion
Air-Inlet
Assembly
(not a
replacment
part
Combustion
Air-Inlet
Coupling
Dip Tube
Dip Tube Gasket
Flue Baffle
Temperature and Pressure
Relief Valve
Drain Valve
Combination
Gas Control (Thermostat)
*Burner
The kit provides extra
speed clips and tamper
resistant screws.
** May differ in actual appearance.
*Burner Supply Tube
44
Flammable Vapor Sensor
*Burner Access Door Gasket
*Burner Orifice
*Igniter
*Burner Access Door
*Sight Glass
Jacket Door
*Burner Access Door Grommet
Notes:
45
Notes:
46
Notes:
47
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:
Rheem Canada Ltd
125 Edgeware, Unit 1
Brampton, Ontario L6Y OP5
Technical Support: 1-800-432-8373
Warranty: 1-800-263-8342
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.
48
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