Whirlpool Ultra Low Nox Product information sheet

®
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your
building.
• Immediately call your gas supplier
from a neighbor's phone. Follow
the gas supplier's instructions.
• If you cannot reach your gas
supplier, call the fire department.
Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
INSTALLER:
• AFFIX THESE INSTRUCTIONS TO OR ADJACENT
TO THE WATER HEATER.
OWNER:
• RETAIN THESE INSTRUCTIONS AND WARRANTY
FOR FUTURE REFERENCE. RETAIN THE ORIGINAL
RECEIPT AS PROOF OF PURCHASE.
Whirlpool
Ultra Low Nox
Gas Water Heater
with the Flame Lock™
Safety System
Installation
Instructions and
Use & Care Guide
To obtain technical, warranty, or servico assistance during or after
the installation of this water heater, vk it our website at:
http://www.whirlpoolwater^eatersupport.com
or call toll free
1-877-817-6750
When calling for assistance, please have the following
information ready:
1. Model number
2. 7 digit product number
3. Serial number
4. Date of installation
5. Place of purchase
Table of Contents 2
6510415
W10123251
March 2007

WATER HEATER SAFETY
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read and obey all
safety messages.
I This is the safety alert symbol.
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" or
"WARNING." These words mean:
>4 DANGER
AWARNING
You can be killed or seriously injured if you don't
immediately follow instructions.
You can be killed or seriously injured if you don't
follow instructions.
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you
what can happen if the instructions are not followed.
Important Instructions
Do not use this appliance if any part has been under water. Immediately call a qualified service technician. Water
heaters subjected to flood conditions or any time the gas controls, main burner or pilot have been submerged in
water require replacement of the entire water heater.
Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally
two weeks or more). Hydrogen gas is extremely flammable and can ignite when exposed to a spark or flame. To
prevent the possibility of injury under these conditions, we recommend the hot water faucet be opened for several
minutes at the kitchen sink before using any electrical appliance which is connected to the hot water system. If
hydrogen is present, there will probably be an unusual sound such as air escaping through the faucet as water
begins to flow. Do not smoke or have any open flame near the faucet at the time it is open.
The California Safe Drinking Water and Toxic Enforcement Act requires the Govemor of California to publish a list of
substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires
businesses to warn of potential exposure to such substances.
WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other
reproductive harm.
This appliance can cause low-level exposure to some of the substances included in the Act.
Table Of Contents
PAGE
Water Heater Safety 1-2
Installing Your Gas Water Heater 3-16
Unpacking the Water Heater 3
Location Requirements 4-5
Gas Supply 6
Combustion Air Supply and Ventilation 7-11
Water System Piping 12-15
Installation Checklist 16
Operating Your Water Heater 17-20
Lighting Instructions 17-18
Operational Conditions 20
Maintenance of Your Water Heater 21-25
Troubleshooting Chart 25-27
Repair Parts Illustration 28-29

INSTALLING YOUR GAS WATER HEATER
Important Information About
This Water Heater
This gas water heater was manufactured to voluntary
safety standards to reduce the likelihood of a flammable
vapor ignition incident. New technology used in meeting
these standards makes this product more sensitive to
installation errors or improper installation environments.
Please review the Installation Checklist found at the end of
the installation instructions section and make any required
installation upgrades or changes.
Consumer Information
This water heater is design-certified by CSA International
as a Category I, non-direct vented water heater which takes
its combustion air either from the installation area or from
air ducted to the unit from the outside.
This water heater must be installed according to all local
and state codes or, in the absence of local and state codes,
the "National Fuel Gas Code", ANSI Z223.1(NFPA 54)-
latest edition. This is available from the following:
CSA America, Inc.
8501 East Pleasant Valley Road
Cleveland, OH 44131
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
Check your phone listings for the local authorities having
jurisdiction over your installation.
Consumer Responsibilities
This manual has been prepared to acquaint you with the
installation, operation, and maintenance of your gas water
heater and provide important safety information in these
areas.
Read all of the instructions thoroughly before attempting
the installation or operation of this water heater.
Do not discard this manual. You or future users of this
water heater will need it for future reference.
Service to the Flame Lock™Safety System should only be
performed by a qualified person.
Examples of a qualified person include: licensed plumbers,
authorized gas company personnel, and authorized
service personnel.
IMPORTANT: The manufacturer and seller of this water
heater will not be liable for any damages, injuries, or
deaths caused by failure to comply with the installation and
operating instructions outlined in this manual.
If you lack the necessary skills required to properly install
this water heater, or you have difficulty following the
instructions, you should not proceed but have a qualified
person perform the installation of this water heater.
Massachusetts code requires this water heater to be
installed in accordance with Massachusetts Plumbing and
Fuel Gas Code 248 CMR Section 2.00 and 5.00.
A data plate identifying your water heater can be found next
to the gas control valve/thermostat. When referring to your
water heater, always have the information listed on the data
plate readily available.
Retain your original receipt as proof of purchase.
Unpacking the Water Heater
^WARNING
Excessive Weight Hazard
Use two or more people to move and install
water heater.
Failure to do so can result in back or
other injury.
Removing Packaging Materials
IMPORTANT: Do not remove any permanent instructions,
labels, or the data label from either the outside of the water
heater or on the inside of water heater panels.
Remove exterior packaging and place installation
components aside.
Inspect all parts for damage prior to installation and
start-up.
• Completely read all instructions before attempting to
assemble and install this product.
• After installation, dispose of/recycle all packaging
materials.

^WARNING
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Storage of or use of gasoline or other
flammable vapors or liquids in the vicinity
of this or any other appliance can result in
serious injury or death.
Read and follow water heater warnings and
instructions.
Location Requirements
^WARNING
Carbon Monoxide Poisoning Hazard
Do not install in a mobile home.
Doing so can result in death or
carbon monoxide poisoning.
The Flame Lock™Safety System is designed to reduce the
risk of flammable vapor-related fires. The patented system
protects your family by trapping the burning vapors within
the water heater combustion chamber through the special
flame-trap. The burning vapors literally "burn themselves
out" without escaping back into the room. In the event
of a flammable vapor incident, the Flame Lock™Safety
System disables the water heater by shutting off the gas
supply to the water heater's burner and pilot, preventing
re-ignition of any remaining flammable vapors in the area.
This will not prevent a possible fire/explosion if the igniter
is depressed and flammable vapors have accumulated
in the combustion chamber with the pilot light off. If you
suspect a flammable vapor incident has occurred, do not
use this appliance. Do not attempt to light this appliance,
or depress the igniter button if you suspect flammable
vapors have accumulated inside or outside the appliance.
Immediately call a qualified person to inspect the
appliance. Water heaters subjected to a flammable vapors
incident will show a discoloration on the flame-trap and
require replacement of the entire water heater.
Do not use or store flammable products such as gasoline,
solvents, or adhesives in the same room or area near the
water heater. If such flammables must be used, all gas
burning appliances in the vicinity must be shut off and their
pilot lights extinguished. Open the doors and windows for
ventilation while flammable substances are in use.
If flammable liquids or vapors have spilled or leaked in
the area of the water heater, leave the area immediately
and call the fire department from a neighbor's home. Do
not attempt to clean the spill until all ignition sources have
been extinguished.
Keep combustibles such as boxes, magazines, clothes,
etc. away from the water heater area.
Site Location
• Select a location near the center of the water piping
system. The water heater must be installed indoors and
in a vertical position on a level surface. Do not install in
bathrooms, bedrooms, or any occupied room normally
kept closed.
Locate the water heater as close to the chimney or gas
vent as practical. Consider the vent system piping and
combustion air supply requirements when selecting the
water heater location. The venting system must be able
to run from the water heater to termination with minimal
length and elbows.
Locate the water heater near the existing gas piping.
If installing a new gas line, locate the water heater to
minimize the pipe length and elbows.
NOTE: This water heater must be installed according to all
local and state codes or, in the absence of local and state
codes, the "National Fuel Gas Code". ANSI Z223.1(NFPA
54)-latest edition.

IMPORTANT: The water heater should be located in
an area where leakage of the tank or connections
will not result in damage to the area adjacent to the
water heater or to lower floors of the structure. Due
to the normal corrosive action of the water, the tank
will eventually leak after an extended period of time.
Also any external plumbing leak, including those from
improper installation, may cause early failure of the tank
due to corrosion if not repaired. If the owner/operator is
uncomfortable with making the repair a qualified person
should be contacted. A suitable metal drain pan should
be installed under the water heater as shown below,
to help protect the property from damage which may
occur from condensate formation or leaks in the piping
connections or tank. The pan must limit the water level
to a maximum depth of 1-3/4" and be two inches wider
than the heater and piped to an adequate drain. NOTE:
The pan must not restrict combustion air flow. Locate the
water heater near a suitable indoor drain. Outside drains
are subject to freezing temperatures which can obstruct
the drain line. The piping should be at least 3/4" ID and
pitched for proper drainage. Under no circumstance will
the manufacturer or seller of this water heater be held
liable for any water damage which is caused by your
failure to follow these instructions.
1 3/4" maximum
Pipe to
adequate
^ drain
_ At least 2" greater than the _
" diameter ofthe water heater.
The water heater should be located in an area not
subject to freezing temperatures. Water heaters located
in unconditioned spaces (i.e., attics, basements,
etc.) may require insulation of the water piping and
drain piping to protect against freezing. The drain and
controls must be easily accessible for operation and
service. Maintain proper clearances as specified on the
data plate.
Do not locate the water heater near an air-moving
device. The operation of air-moving devices such as
exhaust fans, ventilation systems, clothes dryers,
fireplaces, etc., can affect the proper operation of
the water heater. Special attention must be given to
conditions these devices may create. Flow reversal of
flue gases may cause an increase of carbon monoxide
inside of the dwelling.
If the water heater is located in an area that is
subjected to lint, dirt, and oil, it may be necessary
to periodically clean the flame-trap and pilot (see
"External Inspection & Cleaning of the Flame-trap" and
"Cleaning the Pilot Assembly" section).
Figure 1
Air-moving
Devices
Exhaust
Fan
/ Reverse flow
of gases
Clearances and Accessibility
NOTE: Minimum clearances from combustible materials
are stated on the data plate adjacent to the gas control
valve/thermostat of the water heater.
The water heater is certified for installation on a
combustible
floor.
• IMPORTANT: If installing over carpeting, the carpeting
must be protected by a metal or wood panel beneath
the water heater. The protective panel must extend
beyond the full width and depth of the water heater by
at least three inches (76.2mm) in any direction; or if in
an alcove or closet installation, the entire floor must be
covered by the panel.
• Figure 2 may be used as a reference guide to locate
the specific clearance locations. A minimum of 24
inches of front clearance should be provided for
inspection and service.
Figure 2
Minimum Clearance
Locations
r
Back
Sides
rQ
J
Front
24" minimum
for service
Top
I0"--
ceiling
Sides-
Vent
Top
View
t
JL
State of California
NOTE: The water heater must be braced, anchored, or
strapped to avoid moving during an earthquake. Contact
local utilities for code requirements in your area or call
1-877-817-6750 and request instructions.

Gas Supply
A WARNING
Explosion Hazard
Use a new CSA approved gas supply line.
Install a shut-off valve.
Do not connect a natural gas water heater to
an L.P. gas supply.
Do not connect an L.P. gas water heater to a
natural gas supply.
Failure to follow these instructions can
result in death, explosion, or
carbon monoxide poisoning.
Gas Requirements
IMPORTANT: Read the data plate to be sure the water
heater is made for the type of gas you will be using in
your home. This information will be found on the data
plate located near the gas control valve/thermostat. If the
information does not agree with the type of gas available,
do not install or light. Call your dealer.
NOTE: An odorant is added by the gas supplier to the gas
used by this water heater. This odorant may fade over an
extended period of time. Do not depend upon this odorant
as an indication of leaking gas.
Gas Piping
The gas piping must be installed according to all local and
state codes or, in the absence of local and state codes, the
"National Fuel Gas Code", ANSI Z223.1(NFPA 54)-latest
edition.
Table 1 on the following page is provided as a sizing
reference for commonly used gas pipe materials. Consult
the "National Fuel Gas Code" for the recommended gas
pipe size of other materials.
Refer to Figure 3
NOTE: When installing gas piping, apply approved pipe
joint compound.
1. Install a readily accessible manual shut-off valve in the
gas supply line as recommended by the local utility.
Know the location of this valve and how to turn off the
gas to this unit.
2. Install a drip leg (if not already incorporated as part of
the water heater) as shown. The drip leg must be no
less than three inches long for the accumulation of dirt,
foreign material, and water droplets.
3.
4.
Install a ground joint union between the gas control
valve/thermostat and the manual shut-off valve. This
is to allow easy removal of the gas control valve/
thermostat.
Turn the gas supply on and check for leaks. Test all
connections by brushing on an approved noncorrosive
leak-detection solution. Bubbles will show a leak.
Correct any leak found.
Figure 3
Gas Piping
Manual Gas '—"j
Shut-off Valve v.
♦ Ground
Joint ► ;
| Union
Check with
local utility i
for minimum height -*.
i 3" minimum
1 V
<
■A1
e
-I
3h
Drip leg' ^^9
Gas Pressure
IMPORTANT: The gas supply pressure must not exceed
the maximum supply pressure as stated on the water
heater's data plate. The minimum supply pressure is for
the purpose of input adjustment.
Gas Pressure Testing
IMPORTANT: This water heater and its gas connection
must be leak tested before placing the appliance in
operation.
If the code requires the gas lines to be tested at a
pressure exceeding 14" W.C., the water heater and its
manual shut-off valve must be disconnected from the
gas supply piping system and the line capped.
If the gas lines are to be tested at a pressure less than
14" W.C., the water heater must be isolated from the
gas supply piping system by closing its manual shut-off
valve.
U.L. recognized fuel gas and carbon monoxide (CO)
detectors are recommended in all applications and should
be installed using the manufacturer's instructions and local
codes, rules, or regulations.
NOTE: Air may be present in the gas lines and could
prevent the pilot from lighting on initial start-up. The gas
lines should be purged of air by a qualified person after
installation of the gas piping system.

Table 1
Natural Gas Pipe Capacity Table (Cu. Ft./Hr.)
Capacity of gas pipe of different diameters and lengths in cu. ft. per hr. with pressure drop of 0.3 in. and specific gravity
of 0.60 (natural gas).
Nominal Iron Pipe
Size, In. 10 20
30 40
Length of Pipe, Feet
SO 60 70 80 90 100 125 150 175 200
1/2
3/4
1
1-1/4
1-1/2
132
278
520
1050
1600
92
190
350
730
1100
73
152
285
590
890
63
130
245
500
760
56
115
215
440
670
50
105
195
400
610
46
96
180
370
560
43
90
170
350
530
40
84
160
320
490
38
79
150
305
460
34
72
130
275
410
31
64
120
250
380
28
59
110
225
350
26
55
100
210
320
After the length of pipe has been determined, select the pipe size which will provide the minimum cubic feet per hour
required for the gas input rating of the water heater. By formula:
Cu. Ft Per Hr. Required= Gas Input of Water Heater (BTU/HR)
Heating Value of Gas (BTU/FP)
The gas input of the water heater is marked on the water heater data plate. The heating value of the gas (BTU/FT1)
may be determined by consulting the local natural gas utility.
Additional tables are available in the latest edition of the "National Fuel Gas Code", ANSI Z223.1.
Combustion Air Supply and
Ventilation
^WARNING
Carbon Monoxide Warning
Follow all the local and state codes or, in
the absence of local and state codes, the
"National Fuel Gas Code", ANSI Z223.1
(NFPA 54)- latest edition to properly install
vent system.
Failure to do so can result in death,
explosion, or carbon monoxide poisoning.
IMPORTANT: Air for combustion and ventilation must not
come from a corrosive atmosphere. Any failure due to
corrosive elements in the atmosphere is excluded from
warranty coverage.
The following types of installation (not limited to the
following) will require outdoor air for combustion due to
chemical exposure and may reduce but not eliminate the
presence of corrosive chemicals in the air:
• beauty shops
• photo processing labs
• buildings with indoor pools
• water heaters installed in laundry, hobby, or craft
rooms
• water heaters installed near chemical storage areas
Combustion air must be free of acid-forming chemicals
such as sulfur, fluorine, and chlorine. These elements are
found in aerosol sprays, detergents, bleaches, cleaning
solvents, air fresheners, paint, and varnish removers,
refrigerants, and many other commercial and household
products. When burned, vapors from these products form
highly corrosive acid compounds. These products should
not be stored or used near the water heater or air inlet.
Combustion and ventilation air requirements are
determined by the location of the water heater. The water
heater may be located in either an open (unconfined) area
or in a confined area or small enclosure such as a closet
or small room. Confined spaces are areas with less than
50 cubic feet for each 1,000 BTUH of the total input for all
gas using appliances.

Unconfined Space
A water heater in an unconfined space uses indoor air for
combustion and requires at least 50 cubic feet for each
1,000 BTUH of the total input for all gas appliances. The
table below shows a few examples of the minimum square
footage (area) required for various BTUH inputs.
Table 2
BTUH
Input
30,000
45,000
60,000
75,000
90,000
105,000
120,000
135,000
1
Minimum Square
Feet with
8' Ceiling
188
281
375
469
563
657
750
844
Typical Room
with 8' Ceiling
9x21
14x20
15x25
15x31
20x28
20x33
25x30
28x30
IMPORTANT:
The area must be open and be able to provide the
proper air requirements to the water heater. Areas that
are being used for storage or contain large objects may
not be suitable for water heater installation.
• Water heaters installed in open spaces in buildings with
unusually tight construction may still require outdoor
air to function properly. In this situation, outside air
openings should be sized the same as for a confined
space.
Modern home construction usually requires supplying
outside air into the water heater area.
Confined Space
For the correct and proper operation of this water heater,
ample air must be supplied for the combustion, ventilation,
and dilution of flue gases. Small enclosures and confined
areas must have two permanent openings so that sufficient
fresh air can be drawn from outside of the enclosure. One
opening shall be within 12 inches of the top and one within
12 inches of the bottom of the enclosure as shown in
Figure 4.
The size of each opening (free area) is determined by the
total BTUH input of all gas utilization equipment (i.e., water
heaters, furnaces, clothes dryers, etc.) and the method by
which the air is provided. The BTUH input can be found on
the water heater data plate. Additional air can be provided
by two methods:
1. All air from inside the building.
2. All air from outdoors.
Figure 4 12" maximum
Opening Locations-
Confined Spaces
Permanent
openings to
the outside or
additional
rooms within
the building
12" maximum—I
All Air from Inside the Building
When additional air is to be provided to the confined area
from
additional room(s) within the building, the total volume
of the room(s) must be of sufficient size to properly provide
the necessary amount of fresh air to the water heater
and other gas utilization equipment in the area. If you are
unsure that the structure meets this requirement, contact
your local gas utility company or other qualified agency for
a safety inspection.
Each of the two openings shall have a minimum free area
of 1 square inch per 1,000 BTUH of the total input rating of
all gas utilization equipment in the confined area, but not
less than 100 square inches. (Figure 5.)
1 square
inch/1000
BTUH
(minimum
100 sq. In
each)
Figure 5
All Air from Inside Building
Confined Space Installation

All Air from Outdoors
Outdoor fresh air can be provided to a confined area either
directly or by the use of vertical and horizontal ducts. The
fresh air can be taken from the outdoors or from crawl or
attic spaces that freely communicate with the outdoors.
Attic or crawl spaces cannot be closed and must be
properly ventilated to the outside.
Ductwork must be of the same cross-sectional area as
the free area of the opening to which they connect. The
minimum dimension of rectangular air ducts cannot be less
than three inches.
The size of each of the two openings is determined by the
method in which the air is to be provided. Refer to Table
3 to calculate the minimum free area for each opening.
Figures 6, 7, and 8 are typical examples of each method.
Louvers and Grilles
In calculating free area for ventilation and combustion
air supply openings, consideration must be given to the
blocking effect of protection louvers, grilles, and screens.
These devices can reduce airflow, which in turn may
require larger openings to achieve the required minimum
free area. Screens must not be smaller than 1/4" mesh. If
the free area through a particular design of louver or grille
is known, it should be used in calculating the specified
free area of the opening. If the design and free area are
not known, it can be assumed that most wood louvers will
allow 20 - 25% of free area while metal louvers and grilles
will allow 60 - 75% of free area.
Louvers and grilles must be locked open or interconnected
with the equipment so that they are opened automatically
during equipment operation.
Keep louvers and grilles clean and free of debris or other
obstructions.
Table 3
Minimum Free Area of Permanent Openings for Ventilation and
Combustion Air Supply - All Air from Outdoors Only.
Based on the total BTUH input rating for all gas utilizing equipment
within the confined space.
Opening
Source
* Direct to
outdoors
Vertical ducts
Horizontal ducts
Minimum Free Area
Per Opening
(sq. in.)
1 Square inch per 4000
BTUH
1 Square inch per 4000
BTUH
1 Square inch per 2000
BTUH
Reference
Drawing
Figure 6
Figure 7
Figure 8
Example: A water heater with an input rate of 50,000 BTUH using
horizontal ducts would require each opening to have a minimum
free area of 25 square inches.
Minimum free area = 50,000 BTUH x 1 sq. in. / 2000 BTUH = 25
Sq. Inches.
These openings connect directly with the outdoors
through a ventilated attic, a ventilated crawl space, or
through an outside wall.
Consult the local codes of your area for specific ventilation
and combustion air requirements.
Gable vent
to outdoors
Install above
insulation
Outlet
air to attic
1 Sq. inch per
4000 BTUH
Inlet air
from the
crawl
space
1 sq. inch per
4000 BTUH
Open
Foundation
Vent
Figure 6
All Air from Outdoors; Inlet Air from Ventilated
Crawl Space/Outlet Air to Ventilated Attic
Gable vent
to outdoors
Install above
insulation
Outlet air
- to attic
1 Sq. inch per
4000 BTUH
Inlet air duct
1 sq. inch per
4000 BTUH
Figure 7
AlfAir from Outdoors
Through Ventilated Attic
•12" maximum
1 sq. inch
per
2000 BTUH
Figure 8
All Air from Outdoors
Using Horizontal Ducts
1 sq. Inch
per
2000 BTUH

Vent Pipe System
This water heater uses a non-direct, single-pipe vent
system to remove exhaust gases created by the burning of
fossil fuels. Air for combustion is taken from the immediate
water heater location or is ducted in from the outside (see
"Combustion Air Supply and Ventilation" section).
This water heater must be properly vented for the removal
of exhaust gases to the outside atmosphere. Correct
installation of the vent pipe system is mandatory for the
proper and efficient operation of this water heater and is an
important factor in the life of the unit.
The vent pipe must be installed according to all local and
state codes or, in the absence of local and state codes, the
"National Fuel Gas Code", ANSI Z223.1(NFPA 54)-latest
edition. The vent pipe installation must not be obstructed
so as to prevent the removal of exhaust gases to the
outside atmosphere.
IMPORTANT: The use of vent dampers is not
recommended by the manufacturer of this water heater.
Although some vent dampers are certified by CSA
International, this certification applies to the vent damper
device only and does not mean they are certified for use
on this water heater.
U.L. recognized fuel gas and carbon monoxide (CO)
detectors are recommended in all applications and should
be installed using the manufacturer's instructions and local
codes, rules, or regulations.
IMPORTANT: If you lack the necessary skills required
to properly install this venting system, you should not
proceed, but get help from a qualified person.
Draft hood Installation
Align the legs of the draft hood with the slots provided.
Insert the legs and secure the draft hood to the water
heater's top with the four screws provided as shown in
Figure 9. Do not alter the draft hood in any way. If you are
replacing an existing water heater, be sure to use the new
draft hood supplied with the water heater.
Figure 9
Draft hood Installation
Sheet Metal Screws (four provided)
— Draft hood
Legs
Slot
Jacket top
Install the draft hood with
the four screws provided.
Slot
Vent Pipe Size
It is important that you follow the guidelines in these
instructions for sizing a vent pipe system. If a transition to
a larger vent size is required, the vent transition connection
must be made at the draft hood outlet.
Vent Connectors
1. Type B, Double Wall, U.L. Listed Vent Pipe.
2. Single Wall Vent Pipe.
Maintain the manufacturer's specified minimum clearance
from combustible materials when using type B double wall
vent pipe.
Vent connectors made of type B, double wall vent pipe
material may pass through walls or partitions constructed
of combustible material if the minimum listed clearance is
maintained.
Maintain a six inch minimum clearance from all
combustible materials when using single wall vent pipe.
IMPORTANT: Single wall vent pipe cannot be used for
water heaters located in attics and may not pass through
attic spaces, crawl spaces or any confined or inaccessible
location. A single wall metal vent connector cannot pass
through any interior wall.
When installing a vent connector, please note the following:
• Install the vent connector avoiding unnecessary bends,
which create resistance to the flow of vent gases.
• Install without dips or sags with an upward slope of at
least 1/4-inch per foot.
Joints must be fastened by sheet metal screws or other
approved means. It must be supported to maintain
clearances and prevent separation of joints and
damage.
• The length of the vent connector cannot exceed 75% of
the vertical vent height.
• The vent connector must be accessible for cleaning,
inspection, and replacement.
• Vent connectors cannot pass through any ceiling, floor,
firewall, or fire partition.
IMPORTANT: Existing vent systems must be inspected for
obstructions, corrosion, and proper installation.
10

Chimney Connection
IMPORTANT: Before connecting a vent to a chimney,
make sure the chimney passageway is clear and free of
obstructions. The chimney must be cleaned if previously
used for venting solid fuel appliances or fireplaces. Also
consult local and state codes for proper chimney sizing
and application or, in the absence of local and state codes,
the "National Fuel Gas Code", ANSI Z223.1(NFPA 54)-
latest edition.
• The connector must be installed above the extreme
bottom of the chimney to prevent potentially blocking
the flue gases.
• The connector must be firmly attached and sealed to
prevent it from falling out.
• To aid in removing the connector, a thimble or slip joint
may be used.
• The connector must not extend beyond the inner edge
of the chimney as it may restrict the space between it
and the opposite wall of the chimney (Figure 10).
Do not terminate the vent connector in a chimney that has
not been certified for this purpose. Some local codes may
prohibit the termination of vent connectors in a masonry
chimney.
Vertical Exhaust Gas Vent
Vertical exhaust gas vents must be installed with U.L. listed
type B vent pipe according to the vent manufacturer's
instructions and the terms of its listing.
It must be connected to the water heater's draft hood by a
listed vent connector or by directly originating at the draft
hood opening.
Vertical gas vents must terminate with a listed cap or
other roof assembly and be installed according to their
manufacturer's instructions.
Gas vents must be supported to prevent damage, joint
separation, and maintain clearances to combustible
materials (Figures 11 and 12).
IMPORTANT: This gas vent must be terminated in a
vertical position to facilitate the removal of the burnt gases.
An unused chimney flue or masonry enclosure may be
used as a passageway for the installation of a gas vent
(Figure 12).
Common (combined) venting is allowable with vertical type
B vent systems and lined masonry chimneys.
Figures 10-12 are examples of vent pipe system
installations and may or may not be typical for your specific
application. Consult the "National Fuel Gas Code", ANSI
Z223.1(NFPA 54)-latest edition and the guidelines set forth
by prevailing local codes.
Slope up
1/4 in.
per ft.
minimum
Figure 10
Chimney Termination
Vent System
Listed Lined
r Chimney
2 ft. minimum above any
jobject within 10 ft.
\ horizontally
Do not extend
vent beyond edge
of chimney
.Vent
Connector
Figure 11
Vertical Gas
Vent System
With Type B
Double Wall
Vent Pipe.
Maintain
clearance'
•— Listed Vent Cap
J_fiEiJ_
3 ft. minimum
Vent
connector
slope up
1/4 in. per ft.
minimum
2 ft. minimum above any
v object within 10 ft.
t horizontally
Type B Double
Wall Vent Pipe
^'Maintain
specified
clearance
Figure 12
Venting Through
a Chimney
with Type B
Double Wall
Vent Pipe.
Maintain
clearance*
Listed Vent Cap
"Maintain
specified
clearance
Slope up
1/4 in.
per ft.
minimum
Unused chimney
flue or masonry
enclosure
* Maintain vent pipe clearance requirements to local, state
and/or the "National Fuel Gas Code", ANSI Z223.1(NFPA
54)-latest edition.
** NFPA211, Standard for Chimneys, Fireplaces, Vents,
and Solid Fuel-Burning Appliances states that these
chimneys are intended to be installed in accordance with
the installation instructions provided with each chimney
support assembly. Minimum air space clearance to
combustible materials should be maintained as marked on
the chimney sections.
11

Water System Piping
Piping, fittings, and valves should be installed according to
the installation drawing (Figure 13). If the indoor installation
area is subject to freezing temperatures, the water piping
must be protected by insulation.
Water supply pressure should not exceed 80% of the
working pressure of the water heater. The working
pressure is stated on the water heater's data plate. If this
occurs, a pressure limiting valve with a bypass may need
to be installed in the cold water inlet line. This should
be placed on the supply to the entire house in order to
maintain equal hot and cold water pressures.
IMPORTANT:
Heat cannot be applied to the water fittings on the
heater as they may contain nonmetallic parts. If solder
connections are used, solder the pipe to the adapter
before attaching the adapter to the hot and cold water
fittings.
Always use a good grade of joint compound and be
certain that all fittings are drawn up tight.
Piping Installation
1. Install the water piping and fittings as shown in Figure
13. Connect the cold water supply (3/4" NPT) to the
fitting marked "C". Connect the hot water supply (3/4"
NPT) to the fitting marked "H".
IMPORTANT: Some models may contain energy saving
heat traps to prevent the circulation of hot water within
the pipes. Do not remove the inserts within the heat
traps.
2. The installation of unions in both the hot and cold water
supply lines is recommended for ease of removing the
water heater for service or replacement.
3. Some local codes may require, and the manufacturer
of this water heater recommends, installing a tempering
valve or an anti-scald device in the domestic hot water
line as shown in Figure 14. These valves reduce the
point-of-use temperature of the water by mixing cold
and hot water and are readily available for use.
4. If installing the water heater in a closed water system,
install an expansion tank in the cold water line as
specified under "Closed System/Thermal Expansion"
section.
5. Install a shut-off valve in the cold water inlet line. It
should be located close to the water heater and be
easily accessible. Know the location of this valve and
how to shut off the water to the heater.
6. A temperature and pressure relief valve must be
installed in the opening marked "Temperature and
Pressure (T & P) Relief Valve" on the water heater.
A discharge line must be added to the opening of
the T&P Relief Valve. Follow the instructions under
"Temperature and Pressure Relief Valve" section.
7. After piping has been properly connected to the water
heater, remove the aerator at the nearest hot water
faucet. Open the hot water faucet and allow the tank
to completely fill with water. To purge the lines of
any excess air, keep the hot water faucet open for
3 minutes after a constant flow of water is obtained.
Close the faucet and check all connections for leaks.
Figure 13
Water Piping Installation
Hot Water
Outlet
Union
In a closed system use a
' expansion tank
^- Cold Water
Supply to Fixtures
Main
1 Water
Supply
Pressure reducing
valve with bypass
T
Cold Water
Inlet Valve
rminimum
Metal
Drain Pan X
1 3/4" depth maximum
Temperature and
Pressure Relief Valve
Discharge line
6" maximum
above drain
Drain line
3/4" ID
minimum
y Drain
If
Massachusetts:
Install a vacuum relief
in cold water line per
section 19 MGL 142.
Figure 14
Typical Tempering
valve Installation
Follow the tempering
valve manufacturer's
instructions.
Cold
Water
Inlet
Tempered water
to fixtures
Tempering valve
(Setto120°F)
12

Please note the following:
• The system should be installed only with piping that is
suitable for potable (drinkable) water such as copper,
CPVC, or polybutylene. This water heater must not be
installed using iron piping or PVC water piping.
Use only pumps, valves, or fittings that are compatible
with potable water.
• Use only full flow ball or gate valves. The use of valves
that may cause excessive restriction to water flow is
not recommended.
Use only 95/5 tin-antimony or other equivalent solder.
Any lead based solder must not be used.
Piping that has been treated with chromates, boiler
seal, or other chemicals must not be used.
Chemicals that may contaminate the potable water
supply must not be added to the piping system.
Closed System/Thermal Expansion
ikWARN ING
Explosion Hazard
If the temperature and pressure relief valve
is dripping or leaking, have a qualified
person replace it.
Examples of a qualified person include:
licensed plumbers, authorized gas company
personnel, and authorized service
personnel.
Do not plug valve.
Do not remove valve.
Failure to follow these instructions can
result in death, or explosion.
Periodic discharge of the temperature and pressure relief
valve may be due to thermal expansion in a closed water
supply system. The water utility supply meter may contain a
check valve, backflow preventer or water pressure reducing
valve. This will create a closed water system. During
the heating cycle of the water heater, the water expands
causing pressure inside the water heater to increase. This
may cause the temperature and pressure relief valve to
discharge small quantities of hot water. To prevent this, it
is recommended that a diaphragm-type expansion tank
(suitable for potable water) be installed on the cold water
supply line. The expansion tank must have a minimum
capacity of 1.5 U.S. gallons for every 50 gallons of stored
water. Contact the local water supplier or plumbing
inspector for information on other methods to control this
situation.
IMPORTANT: Do not plug or remove the temperature and
pressure relief valve.
13

Temperature and Pressure
Relief Valve
^WARNING
Explosion Hazard
If the temperature and pressure relief valve
is dripping or leaking, have a qualified
person replace it.
Examples of a qualified person include:
licensed plumbers, authorized gas company
personnel, and authorized service
personnel.
Do not plug valve.
Do not remove valve.
Failure to follow these instructions can
result in death, or explosion.
Figure 15A
Temperature and Pressure
Relief Valve Installation
Optional location
some models only
■ Temperature and
Pressure Relief Valve
-Discharge line 3/4" minimum
Do not cap or plug.
t Drain
Drain Pan
r
6" maximum
t
For protection against excessive pressures and
temperatures, a temperature and pressure relief valve
must be installed in the opening marked "T & P RELIEF
VALVE" (see Figure 15A). This valve must be design
certified by a nationally recognized testing laboratory that
maintains periodic inspection of the production of listed
equipment or materials as meeting the requirements for
Relief Valves and Automatic Shut-off Devices for Hot
Water Supply Systems, ANSI 221.22. The function of the
temperature and pressure relief valve is to discharge water
in large quantities in the event of excessive temperature or
pressure developing in the water heater. The valve's relief
pressure must not exceed the working pressure of the
water heater as stated on the data plate.
IMPORTANT: Only a new temperature and pressure
relief valve should be used with your water heater. Do not
use an old or existing valve as it may be damaged or not
adequate for the working pressure of the new water
heater. Do not place any valve between the relief valve
and the tank.
The Temperature & Pressure Relief Valve:
• Must not be in contact with any electrical part.
Must be connected to an adequate discharge line.
• Must not be rated higher than the working pressure
shown on the data plate of the water heater.
The Discharge Line:
Must not be smaller than the pipe size of the relief
valve or have any reducing coupling installed in the
discharge line.
• Must not be capped, blocked, plugged or contain
any valve between the relief valve and the end of the
discharge line.
Must terminate a maximum of six inches above a floor
drain or external to the building.
Must be capable of withstanding 250°F (121°C) without
distortion.
• Must be installed to allow complete drainage of both
the valve and discharge line.
T&P Relief Valve and Pipe Insulation (some Models)
1. Locate the T&P Relief Valve on the water heater.
2. Locate the slit running the length of the insulation.
3 Spread this slit open and slip it over the T&P Relief Valve.
See Figure 15B. Apply gentle pressure to the insulation
to ensure it is fully seated on the T&P Relief Valve. Once
sealed secure the insulation with a section of tape.
IMPORTANT: The insulation or tape should not block
or cover the T&P Relief Valve drain opening. Also the
insulation or tape should not block or hinder access to the
T&P Relief Valve manual relief lever.
4. Next locate the hot water (outlet) & cold water (inlet) pipes
to the water heater.
5. Select one of the sections of pipe insulation and locate the
slit that runs the length of the insulation.
6. Spread the slit open at the base of the insulation and slip
it over the cold water (inlet) pipe. Apply gentle
pressure along the length of the insulation to ensure it is
fully seated around the cold water pipe. Also ensure that
the base of insulation is flush with the water heater. Once
seated, secure the insulation with a section of tape.
7. Repeat steps 5 through 6 for the hot water (outlet) pipe.
Figure 15B
T&P Relief Valve Insulation
T&P Relief Valve Insulation
14

Special Applications
Combination Space Heating/Potable
Water System
Some water heater models are equipped with inlet/outlet
tappings for use with space heating applications. If this
water heater is to be used to supply both space heating
and domestic potable (drinking) water, the instructions
listed below must be followed.
• Be sure to follow the manual(s) shipped with the air
handler system.
• This water heater is not to be used as a replacement
for an existing boiler installation.
Do not use with piping that has been treated with
chromates, boiler seal or other chemicals and do not
add any chemicals to the water heater piping.
If the space heating system requires water
temperatures in excess of 120°F, a tempering valve
or an anti-scald device should be installed per its
manufacturer's instructions in the domestic (potable)
hot water supply to limit the risk of scald injury.
Pumps, valves, piping and fittings must be compatible
with potable water.
• A properly installed flow control valve is required to
prevent thermosiphoning. Thermosiphoning is the
result of a continuous flow of water through the air
handler circuit during the off cycle. Weeping (blow off)
of the temperature and pressure relief valve (T & P)
or higher than normal water temperatures are the first
signs of thermosiphoning.
• The domestic hot water line from the water heater
should be vertical past any tempering valve or supply
line to the air handler to remove air bubbles from the
system. Otherwise, these bubbles will be trapped in the
air handler heat exchanger coil, reducing the efficiency.
Do not connect the water heater to any system or
components previously used with non-potable water
heating appliances when used to supply potable water.
Some jurisdictions may require a backflow preventer in the
incoming cold water line. This may cause the temperature
and pressure relief valve on the water heater to discharge
or weep due to expansion of the heated water. A
diaphragm-type expansion tank suitable for potable water
will normally eliminate this weeping condition. Please
read and follow the manufacturer's instructions for the
installation of such tanks.
Also see "Water System Piping" section for additional
instructions on the safe and correct installation and
operation of this water heater.
Figure 16
Typical Tempering Valve Installation
Combination Space Heating/Potable
Water Heating System
Domestic
Hot Water
Out
.Must be vertical to
remove air bubbles
Tempering
Valve v.
Flow Control
Pump Valve
Air
Handler
Massachusetts code
does not allow this
type of installation.
Solar Installation
If this water heater is used as a solar storage heater
or as a backup for the solar system, the water supply
temperatures to the water heater tank may be in excess
of 120T. A tempering valve or other temperature limiting
valve must be installed in the water supply line to limit the
supply temperature to 120*F.
NOTE: Solar water heating systems can often supply water
with temperatures exceeding 180°F and may result in
water heater malfunction.
15

Important information About This Water Heater
This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable
vapor ignition incident. The new technology used in meeting these standards makes this product more sensitive to
installation errors. Please review the following checklist and make any required installation upgrades or changes.
Questions? Call 1-877-817-6750. '
Installation Checklist
Water Heater Location
Water heater location is important and can affect system
performance. Please check the following:
d Installation area free of corrosive elements and
flammable materials.
D Centrally located with the water piping system.
Located as close to the gas piping and vent pipe
system as possible.
a Located indoors and in a vertical position. Protected
from freezing temperatures.
D Proper clearances from combustible surfaces
maintained and not installed directly on a carpeted
floor.
□ Provisions made to protect the area from water
damage. Metal drain pan installed and piped to an
adequate drain.
□ Sufficient room to service the water heater. See
"Clearances and Accessibility" section of this
manual.
D Water heater not located near an air moving device.
a Is the installed environment dirty (excessive
amounts of lint, dirt, dust, etc.)? If so, the flame
arrestor located on the bottom of the water heater
and the burner will need to be cleaned periodically.
Refer to the "Maintenance of your Water Heater"
section of this manual for information on cleaning
the flame-trap and burner.
Combustion Air Supply and Ventilation
Check for sufficient combustion air supply. Insufficient air
for the combustion of gas will result in the burner flame
tips becoming longer and the pilot will begin to experience
nuisance tripping. Is the water heater installed in a closet or
other small, enclosed space? If so:
D Are there openings for make-up air to enter and
exit the room/area?
D Are the openings of sufficient size? Remember,
if there are other gas-fired or air-consuming
appliances in the same room, you need more
make-up air. Refer to the "Location Requirements"
section of this water heater manual for specific
requirements.
Fresh air not taken from areas that contain negative
pressure producing devices such as exhaust fans,
fireplaces, etc.
a Is there a furnace/air handler in the same room
space as the water heater? If so, has a return air
duct system been attached that exits the room?
If so, check for leaks on the air duct system. If no
air duct system is present, correct immediately
by contacting a local Heating, Ventilation, Air-
Conditioning & Refrigeration (HVAC-R) authorized
service provider.
D Fresh air supply free of corrosive elements and
flammable vapors,
a Fresh air openings sized correctly with consideration
given to the blocking effect of louvers and grilles.
a Ductwork is the same cross-sectional area as the
openings.
Vent Pipe System
Check for proper drafting at the water heater draft hood.
Refer to the "Checking the Draft" section of this manual for
the test procedure. If the procedure shows insufficient draft
is present, please check the following.
□ Draft hood properly installed. v.
D Vent connectors securely fastened with screws and
supported properly to maintain six inch clearance.
□ Vent connector made of approved material and
sized correctly.
□ Vent pipe system installed according to all local
and state codes or, in the absence of local and
state codes, the "National Fuel Gas Code", ANSI
Z223.1 (NFPA 54)-latest edition.
D Flue baffle engaged in slots provided in the flue
tube.
□ Check the vent system for restrictions/obstructions
and check the vent termination height. Refer to the
"Air Supply and Ventilation" section of this water
heater manual for specific requirements.
□ Recheck for sufficient combustion air supply.
Water System Piping
D Temperature and pressure relief valve properly
installed with a discharge line run to an open drain
and protected from freezing.
d All piping properly installed and free of leaks.
□ Heater completely filled with water.
D Closed system pressure build-up devices installed.
D Tempering valve (when applicable) installed per
manufacturer's instructions (see "Water Temperature
Regulation" section). ■ '
Gas Supply and Piping
* t
D Gas type is the same as that listed on the water
heater data plate.
D Gas line equipped with shut-off valve, union, and
drip leg.
□ Approved pipe joint compound used.
a Adequate pipe size and approved pipe material.
D An approved noncorrosive leak detection solution
used to check all connections and fittings for possible
gas leaks. Correct any leak found.
16

OPERATING YOUR WATER HEATER
Lighting Instructions
Read and understand these directions thoroughly before
attempting to light or re-light the pilot. Make sure the
viewport is not missing or damaged. (See Figure 23)
Make sure the tank is completely filled with water before
lighting the pilot. Check the data plate near the gas control
valve/thermostat for the correct gas. Do not use this water
heater with any gas other than the one listed on the data
plate. If you have any questions or doubts, consult your gas
supplier or gas ut^jty company.
AWARNING
Explosion Hazard
Replace viewport if glass is
missing or damaged.
Failure to do so can result in
death, explosion or fire.
Robertshaw Gas Valve - Lighting Instructions
B.
FOR YOUR SAFETY READ BEFORE
WARNING: If you do not follow these Instructions exactly, a fire or explosion
may result causing property damage, personal Injury or loss of life.
A. This appliance has a pilot which Is lighted by a
piezoelectric igniter. When lighting the pilot, follow these
instructions exactly.
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
WHAT TO 00 IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone In your building.
• immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire
department
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in or
move by hand, don't try to repair it, call a qualified service
technician. Force or attempted repair may result in a fire
or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance. Water heaters subjected to flood
conditions or anytime the gas controls, main burner or
pilot have been submerged in water require replacement
of the entire water heater.
E. DONOTUSETHISAPPUANCEEFTHEREHASBEENAN
IGNITION OF VAPORS. Immediately call a qualified service
technician to inspect the appliance. Water heaters
subjected to a flammable vapors ignition will show a
discoloration on the air Intake grid and require
replacement of the entire water heater.
LIGHTING INSTRUCTIONS
■ ■■■'.;;.:-^-.:::^i'-'.v; ;-.-^;^
1.
before lighting the pilot
2. Remove the outer door.
3. Turn the temperature dial counterclockwise » ' to its
lowest setting.
Oepress the reset button all the way
in and IMMEDIATELY depress the
igniter button until you hear a loud
click. Observe the pilot through the
view port Do not release the reset
button. Repeat immediately if pilot
does not light on the first try. If the
pilot does not light by the fourth
attempt with the igniter, repeat steps
4 ■ 7. Continue to hold the button for
about (1) minute after the pilot is lit
PUSHBUTTON
back up. Pilot should remain lit If the
pilot light goes out, repeat steps 3 • 7. IGNITER
IMPORTANT: If the pilot will not stay lit after several tries,
4. Depress the dial stop and turn (~\
gas control knob clockwise
to the "OFF" position.
5. To clear any gas that may have
accumulated wait ten (10) minutes.
If you then smell gas, STOP! Follow "B" in the safety
warning above. If you do not smell gas go to the next
step.
6. Turn the gas control knobti
counterclockwise
to "PILOT".
then call your service technician or gas supplier.
IMPORTANT: If the reset button (see graphic at step 3) does
not pop up when released, stop and immediately shut off
the gas at the line valve or tank. Call your service technician
or gas supplier.
8. Turn the gas control knob
counterclockwise O
to "ON".
9. Set the temperature dial to
the desired setting.
10. Replace the outer door.
TO TURN OFF GAS TO APPLIANCE
1. Turn the temperature dial counterclockwise/^ to Its
Turn the gas control knob clockwise it to the "OFF"
position.
17

White Rodgers Gas Valve - Lighting Instructions
j FOR YOUR SAFETY READ BEFORE LIGHTING I
WARNING: If you do not follow these Instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
A. This appliance has a pilot which is lighted by a
piezoelectric igniter. When lighting the pilot, follow these
B. BEFORE LIGHTING smell all around the appliance area
gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push In or
move by hand, dont by to repair R, cafl a quaSned service
technician. Force or attempted repair may result In a fire
or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call the fire
department
of the entire water heater.
E. DONOTUSETHISAPPUANCEIFTHEREHASBEENAN
IGNITION OF VAPORS. Immediately can a qualified service
technician to Inspect the appliance. Water heaters
subjected to a flammable vapors ignition will show a
discoloration on the air intake grid and require
replacement of the entire water heater.
LIGHTING INSTRUCTIONS
1. STOPI It is imperative that you read all the safety
warnings before lighting the pilot
2. Remove the outer door.
3. Turn the temperature dial clockwise^ to its lowest
7. Depress the gas control knob all the way In and
IMMEDIATELY depress the Igniter button until you hear
a loud dick. Observe (he pilot through the view port Do
Depress the gas control knob slightly and turn
clockwise^ to "OFF". If the knob is "ON", turn It
clockwise (~\ to "PILOT" then depress the knob slightly
and turn clockwise C\ to "OFF".
4-7.
pop back up. Pilot should remain lit If the pilot light goes
out repeat steps 3-7.
CAS CONTROL KNOB
— (Of F- PILOT. ON)—«fj ALTERNATE
. IGNITER
O
120= F MARK
130" F MARK
NOTE: Knob cannot be turned from "PILOT' to "OFF unless
knob is depressed slightly. Do not use tools or excessive
force.
5. To clear any gas that may have accumulated wait ten
(10) minutes. If you smell gas, STOPI Follow "B" in the
safety warning above. If you do not smell gas go to the
next step.
E. Turn the gas control knob counterclockwise O to
"PILOT".
IMPORTANT: If the pilot will not stay lit after several tries,
turn gas control knob to "OFF" and call your service
technician or gas supplier.
IMPORTANT: H the gas control knob does not pop up when
valve or tank. Call your service technician or gas supplier.
8. Turn the gas control knob counterclockwise f\
to "ON".
9. Set the temperature dial to the desired setting.
10. Replace the outer door.
I TO TURN OFF GAS TO APPLIANCE
1. Turn the temperature dial clockwise irto Its
lowest setting.
2. Tum gas control knob clockwise «?to "PILOT".
Depress the gas control knob slightly and turn
clockwise C\ to "OFF". Do not use tools or force.
Checking the Draft
Burn Hazard
Do not touch vent.
Doing so can result in burns.
Figure 17
Match
Draft hood
Relief
Opening
After successfully lighting the water heater, allow the unit
to operate for 15 minutes and check the draft hood relief
opening for proper draft. Make sure all other appliances
in the area are operating and all doors are closed when
performing the draft test.
Pass a match flame
around the relief opening
of the draft hood. A
steady flame drawn into
the opening indicates
proper draft. If the flame
flutters or is blown out,
combustion products are
escaping from the relief
opening. If this occurs, do not operate the water heater until
proper adjustments or repairs are made to the vent pipe
system and/or air supply requirements.
18

Figure 18
Flame Characteristics
Correct flame
soft blue
Burner Flames
Inspect burner
flames through
viewport.
Flames should
be very small
with a blue
haze and
small amounts
of yellow or
orange at the
edges. After
several minutes
of operation the
burner screen may glow red. If large flames are observed
at anytime shut-off unit and call a qualified person.
Stacking
Stacking occurs when a series of short draws of hot water
(3 gallons or less) are taken from the water heater tank.
This causes increased cycling of the burner and can result
in increased water temperatures at the hot water outlet. An
anti-scald device is recommended in the hot water supply
line to reduce the risk of scald injury.
Emergency Shut Down
IMPORTANT: Should overheating occur or the gas supply
fails to shut off, turn off the water heater's manual gas
control valve and call a qualified person.
Water Temperature Regulation
AWARNING
Water temperature over 125°F can cause
severe burns instantly or death from scalds.
Children, disabled and elderly are at highest
risk of being scalded.
Feel water before bathing or showering.
Temperature limiting valves are available.
The thermostat is adjusted to its lowest temperature when
it is shipped from the factory. Water temperature can be
regulated by moving the temperature dial to the preferred
setting. The preferred starting point is 120°F. Align the
index bar on the thermostat with the desired water
temperature as shown in Figure 19. There is a hot water
scald potential if the" thermostat is set too high.
IMPORTANT: Adjusting the thermostat past 120°F on the
temperature dial will increase the risk of scald injury in the
times shown below.
Water
Temperature
Time for 1st
Degree Burn
(Less Severe Bums)
Time for
Permanent Burns
2nd & 3rd Degree
(Most Severe Bums)
110 (normal shower temp.)
116 (pain threshold)
116 35 minutes 45 minutes
122 1 minute 5 minutes
131 5 seconds 25 seconds
140 2 seconds 5 seconds
149 1 second 2 seconds
154 instantaneous 1 seconds
(U.S. Government Memorandum, C.P.S.C, Peter L Armstrong, Sept. 15,1978)
Figure 19
Gas Valve/Thermoslal
Sellings
While Rodgers Gas Valve
— Gas Control Knob
(Off-Pllol-On)
Index Bar
Resel
Button
Robertshaw Gas Valve
.Gas Control Knob
Dial Slop
120'F
Bar
Temperature Dial
NOTE: During low demand periods when hot water is not
being used, a lower thermostat setting will reduce energy
losses and may satisfy your normal hot water needs. If hot
water use is expected to be more than normal, a higher
thermostat setting may be required to meet the increased
demand. When leaving your home for extended periods
(vacations, etc.) turn the temperature dial to its lowest
setting. This will maintain the water at low temperatures
with minimum energy losses and prevent the tank from
freezing during cold weather.
19

Operational Conditions
Condensation
Moisture from the products of combustion condenses on
the tank surface and the outside jacket of the water heater
and forms drops of water which may fall onto the burner or
other hot surfaces. This will produce a "sizzling" or "frying"
noise. NOTE: This condensation is normal and should
not be confused with a leaking tank. Condensation may
increase or decrease at different times of the year.
High efficient energy saver water heaters will produce
larger amounts of condensation on initial start-up or when
a large amount of hot water is being used. NOTE: Do not
confuse this with a "tank leak". Once the water reaches a
temperature of 120°F and the tank warms up (usually 1-2
hours), the condensation will stop.
IMPORTANT: It is always recommended that a suitable
drain pan be installed under the water heater to protect
the area from water damage resulting from normal
condensation production, a leaking tank or piping
connections. Refer to the "Location Requirements" section.
Under no circumstances is the manufacturer to be held
responsible for any water damage in connection with this
water heater.
Water Heater Sounds
During the normal operation of the water heater, sounds or
noises may be heard. These noises are common and may
result from the following:
1. Normal expansion and contraction of metal parts during
periods of heat-up and cool-down.
2. Condensation causes sizzling and popping within the
burner area and should be considered normal.
3. Sediment buildup in the tank bottom will create varying
amounts of noise and may cause premature tank
failure. Drain and flush the tank as directed under the
"Draining and Flushing" section.
Smoke/Odor
The water heater may give off a small amount of smoke
and odor during the initial start-up of the unit. This is due to
the burning off of oil from metal parts of a new unit and will
disappear after a few minutes of operation.
Safety Shut-off
This water heater is designed to automatically shut-off in
the event of the following:
1. The pilot flame is extinguished for any reason.
2. The water temperature exceeds 180°F (83°C).
3. Excessive build-up of lint and dust inside the
combustion chamber.
4. The ignition of flammable vapors.
Check the flame-trap for signs of high temperature (blue or
black discoloration). If there are signs of high temperature,
inspect your installation for a flammable vapor event (see
"Pilot Light Troubleshooting Flow Chart"). If you suspect
a flammable vapor incident has occurred, do not use this
appliance. Immediately call a qualified person to inspect the
appliance. Water heaters subjected to a flammable vapors
ignition will require replacement of the entire water heater.
A thermocouple is used to determine if a pilot flame is
present and will shut off the gas supply to the main burner
and the pilot burner if the flame is absent.
A high temperature limit switch or ECO (Energy Cut Off) in
the tank is used to shut off the unit if the water temperature
exceeds 180°F (83°C). The ECO is a single-use switch,
which, if activated, requires complete replacement of the
entire gas control valve/thermostat. If the ECO should
activate, the water heater cannot be used until the gas
control valve/thermostat is replaced by a qualified person.
Contact your local dealer for service information.
Anode Rod/Water Odor
Each water heater contains at least one anode rod, which
will slowly deplete while protecting the glass-lined tank
from corrosion and prolonging the life of the water heater.
Once the anode is depleted, the tank will start to corrode,
eventually developing a leak. Certain water conditions will
cause a reaction between this rod and the water. The most
common complaint associated with the anode rod is a "rotten
egg smell" produced from the presence of hydrogen sulfide
gas dissolved in the water. IMPORTANT: Do not remove
this rod permanently as it will void any warranties. The
parts list includes a special anode that can be ordered if
water odor or discoloration occurs. NOTE: This rod may
reduce but not eliminate water odor problems. The water
supply system may require special filtration equipment from
a water conditioning company to successfully eliminate all
water odor problems.
Artificially softened water is exceedingly corrosive because
the process substitutes sodium ions for magnesium and
calcium ions. The use of a water softener may decrease the
life of the water heater tank.
The anode rod should be removed from the water heater
tank every 3 years for inspection. The following are typical
(but not all) signs of a depleted anode rod:
• The majority of the rods diameter is less than 3/8".
Significant sections of the support wire (approx. 1/3 or
more of the anode rod's length) are visible.
If the anode rod show signs of either or both it should be
replaced. NOTE: Whether reinstalling or replacing the
anode rod, check for any leaks and immediately correct if
found.
In replacing the anode:
1. Turn off gas supply to the water heater.
2. Shut off the water supply and open a nearby hot water
faucet to depressurize the water
tank.
3. Drain approximately 5 gallons
of water from tank (Refer to the
"Draining and Flushing" section
for proper procedures). Close
drain valve.
4. Remove old anode rod.
5. Use Teflon® tape or approved
pipe sealant on threads and
install new anode rod.
6. Turn on water supply and open
nearby hot water faucet to purge
air from water system. Check
for any leaks and immediately
correct any if found.
7. Restart the water heater as
directed under the "Operating
Your Water Heater." See the
"Repair Parts Illustration" section
for anode rod location.
Figure 20:
Anode Rod Depletion
Exposed
•—Support
Wire
Pitted
Anode
tt
J
I
Exposed
Support—A
Wire u
TEFLON® is a registered trademark of E.I. Du Pont De Nemours and Company.
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