Residential Gas Water Heater

USE & CARE MANUALWITH INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR

The purpose of this manual is twofold: for the installing contractor, to provide requirements
and recommendations for the proper installation and adjustment of the water heater, andfor the owner-operator, to explain the features, operation, safety precautions, maintenance and trouble shooting of the water heater. This manual also includes a parts list.

It is imperative that all persons who are expected to install and maintain the appliance read thetechnical instructions before installing the appliance and all persons who are expected to light oroperate this water heater read the operating instructions carefully before attempting to light oroperate the appliance.
Any questions regarding the operation, maintenance, service or warranty of this water heater should
be directed to the entity from whom it was purchased. If additional information is required, refer to thesection on How to Obtain Service Assistance.
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!

This appliance shall only be installed in a room with appropriate ventilation
requirements per national and local codes and regulations.

!

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!

neighbor's phone. Follow the gas supplier's
instructions.

— Do not store or use gasoline or otherflammable vapors or liquids or othercombustible materials in the vicinity of this or
any other appliance. To do so may result in an
explosion or fire.

• If you cannot reach your gas supplier, call the— WHAT TO DO IF YOU SMELL GAS— Improper installation, adjustment, alteration,
service or maintenance can cause injury,
property damage or death. Refer to thismanual. Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.

• 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
Printed in USA

fire department.

• Do not return to your home until authorized
by the gas supplier or fire department.

AP12519 (06/01)

! General Safety Precautions
Be sure to read and understand the entire Use & Care Manual before attempting to install or operate this water heater. Pay particular attention
to the following General Safety Precautions. Failure to follow these warnings could result in a fire or explosion, causing property damage, bodily injury or death . Should you have any problems understanding the instructions in this manual, STOP, and get help from a qualified installer
or service technician or the gas supplier.
Note that the installation and maintenance are covered inother sections and only competent qualified persons shallinstall and/or adjust this appliance.

! DANGER
Failure to install the draft hood and properly vent the water
heater to the outdoors as outlined in the Venting Sectionof this manual can result in unsafe operation of the water
heater. To avoid the risk of fire, explosion, or asphyxiationfrom carbon monoxide, never operate this water heater
unless it is properly vented and has an adequate air
supply for proper operation. Be sure to inspect the ventsystem for proper installation at initial start-up; and at
least annually thereafter. Refer to Maintenance section ofthis manual for more information regarding vent systeminspections.

The following options may be included in your standard
B11 type water heater:
1) Piezo ignitor system.
2) Combustion Products Discharge Safety Device
or vent switch. (B11BS Systems)
All options are explained in the manual.
This manual covers Propane (G31), Butane (G30), andNatural Gas (G20) models of the water heater. Your water
heater will use only the gas noted on the water heaterrating plate.

! DANGER! WARNING

LIQUIFIED PETROLEUM (LP) MODELS — Propane or LP
gas must be used with great caution.

Gasoline, as well as other flammable materials andliquids (adhesives, solvents, etc.), and the vapors they
produce, are extremely dangerous. DO NOT handle,
use or store gasoline or other flammable or
combustible materials anywhere near or in the vicinityof a water heater. Be sure to read and follow thewarning label pictured below and other labels on thewater heater, as well as the warnings printed in thismanual. Failure to do so can result in property damage,bodily injury, or death.

!

FLAMMABLES• It is heavier than air and will collect first in lower areas
making it hard to detect at nose level.
• Make sure to look and smell for LP leaks before
attempting to light appliance. Use a soapy solution tocheck all gas fittings and connections. Bubbling at aconnection indicates a leak that must be corrected.
When smelling to detect an LP leak, be sure to sniff
near the floor too.
• Gas detectors are recommended in LP applications andtheir installation should be in accordance with the
manufacturer's recommendations and/or local laws,
rules, regulations or customs.
• It is recommended that more than one method be used
to detect leaks in LP applications.

DANGERIF LP GAS IS PRESENT OR SUSPECTED:• DO NOT attempt to find the cause yourself;• DO NOT try to light any appliance;• DO NOT touch any electrical switch;• DO NOT use any phone in your building.
• Leave the house immediately and make sure your family
and pets leave also.
• Leave the doors open for ventilation and contact thegas supplier, a qualified service agency or the fire
department.
• Keep the area clear until the service call has been made,the leak is corrected, and a qualified agency has
determined the area to be safe.

Flammable Vapors! Vapors from flammableliquids will explode andcatch fire causing death orsevere burns
Do not use or store flammableproducts such as gasoline,
solvents or adhesives in thesame room or area near thewater heater.
Keep flammable products:
1. far away from heater,
2. in approved containers,
3. tightly closed and4. out of children's reach.
Installation:
Do not install water heater
where flammable products will
be stored or used unless themain burner and pilot flames

Water heater has a mainburner and pilot flame.
The pilot flame:
1. is on all the time and2. will ignite flammablevapors.
Vapors:1. cannot be seen,
2. are heavier than air,
3. go a long way on thefloor and4. can be carried fromother rooms to the pilot
flame by air currents.

! WARNING
Both Liquified Petroleum and natural gas have an odorantadded to help detection. Some people may not physicallybe able to smell or recognize this odorant. If unsure or
unfamiliar about the smell associated with LP or naturalgas, ask the gas supplier. Other conditions, such as"Odorant Fade", which causes the odorant to "fade", ordiminish in intensity can also hide or camouflage a gas
leak.

are at least 45.7 cm (18") above
the floor. This will reduce, but
not eliminate, the risk of vapors being ignited by the mainburner or pilot flame.

Read and follow water heater warnings and instructions. If owners
manual is missing, contact the retailer or manufacturer.

2

! General Safety Precautions! DANGER!

Water heaters utilizing LP are different from natural gas
models. A natural gas heater will not function safely on LP
and vice versa. No attempt should ever be made toconvert a heater from natural gas to LP gas. To avoid
possible equipment damage, personal injury or fire: DO
NOT connect this water heater to a fuel type not inaccordance with unit data plate. Propane for propane
units. Natural gas for natural gas units. Butane for butane
units. These units are not certified for any other type fuel.
Failure to comply with this warning may result in serious
injury, burn, or death.

DANGERHOT! WARNING
LP appliances should not be installed below-grade (forexample, in a basement) if such installation is prohibitedby federal, state and/or local laws, rules, regulations or
customs.

! WARNING

BURN

This water heater may be equipped with a vent switch
which interrupts the gas supply if the venting is blocked.
To avoid possible severe injury or property damage DO
NOT disconnect the vent switch circuit. The safety of theappliance and the safety of the final user is inhibited if thevent switch circuit is disconnected.

Water temperature over 125° (52°C)
can cause severe burns instantly ordeath from scalds.
Children, disabled and elderly areat highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves areavailable, see manual.

The failure to install or tampering with a vent switch
equipped appliance may violate local, federal and national
codes or regulations. Units equipped with a vent switch
shall not be operated without the switch correctly installed.
A Type B11 water heater is not equipped with a vent switch.
It must only be installed in a room separated frominhabited rooms with suitable ventilation directly to theoutside. (See Combustion & Ventilation Air Section)
A Type B11Bs is equipped with a vent switch. It must be
installed in locations that meet suitable venting
requirements. (See Combustion & Ventilation Air Section)
WATER TEMPERATURE ADJUSTMENT - Safety andenergy conservation are factors to be considered whenselecting the water temperature setting of water heater’s
thermostat. Excessive high water temperatures can cause
severe burns or death from scalding. Consult local,
national, and federal codes and regulations forrecommended temperature settings. Be sure to read andfollow the warnings outlined on the label pictured on theright.

TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
Temperature
49° C (120° F)
52° C (125° F)
54° C (130° F)
57° C (135° F)
60° C (140° F)
63° C (145° F)
66° C (150° F)
68° C (155° F)

Maximum water temperatures occur just after burner has
shut off. To find the hot water temperature being
delivered, turn on a hot water faucet and place athermometer in the hot water stream and read thethermometer.

Time to Produce Serious Burn
More than 5 minutes
11/2 to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 11/2 seconds
About 1 second
Table courtesy of Shriners Burn InstituteThe chart on the right may be used as a guide in
determining the proper water temperature for your home.

Figure 1 details the approximate water temperature foreach mark on the Thermostat Temperature Dial.

The temperature of the water in the heater can be
regulated by setting the temperature dial on front of thethermostat. The thermostat was set at its lowest setting
before the water heater was shipped from the factory.

Consult your local, national, and federal codes andregulations for recommended temperature settings.

3

! General Safety Precautions! DANGER
1. Low water temperatures may lead to bacterial growth.
2. High water temperatures can increase the risk ofscalding and burns.
3. Children, disabled and elderly are at highest risk of being
scalded.
4. See instruction manual before setting temperature on thewater heater.
5. Feel water before bathing or showering.

40°C (104°F)(Approx.)
50°C (122°F)(Approx.)Mixing valves for reducing point of use watertemperature by mixing hot and cold water in branchwater lines are available. Contact a licensed plumber
or the local plumbing authority for further information.

1

3

2

4

60°C (140°F)(Approx.)
70°C (158°F)(Approx.)Figure 1

Introduction
COMPONENTS OF YOUR WATER HEATER — So that you may better understand the operation of your new water heater,
the following section illustrates the basic components of a typical water heater.
22
20 / 21
11
3

2

18

1
5

19

9

7
17

4

10
23
8
6
16

24
15

Fig. 2b. — Thermostat
and Burner

14
12
13

Fig. 2a. — Basic Gas Water Heater

4

1. Thermostatic Gas Valve
2. Gray Removable Cap
3. Gas Cock Knob
4. Thermostat Temperature Dial
5. Main Burner
6. Pilot Burner
7. Thermocouple
8. Main Burner Orifice
9. Glasslined Tank
10. Insulation
11. Jacket
12. Jacket Door
13. Inner Door
14. Floor Shield
15. Drain Valve
16. Internal Flueway
17. Flue Baffle
18. Dip Tube (Cold Water Inlet)
19. Anode
20. Relief Valve Opening (On Top/ or Side)
21. Water Connections (On Top)22. Draft Hood
23. Burner Supply Tube
24. Pilot Supply TubeTechnical Instructions and Information
Introduction! CAUTION
Installation, operation, and maintenance are covered in separate sections. Read the entire Use and Care Manual before
attempting any of these tasks. Only qualified service persons should perform these tasks.
installed in an alcove or closet, the entire floor must be covered by the! WARNING
panel. A minimum of 61 cm (24 inches) clearance from the front and top
Read and Review this entire Manual with special emphasisshould be available for adequate inspection and servicing.
on the Venting Section (Pages 7 - 8) and Operation Section(Pages 9 - 12) prior to any installation work
The location chosen for the water heater must take into consideration the! WARNING
following:”Combustible construction” refers to adjacent walls and
LOCAL INSTALLATION REGULATIONS
ceilings, and should not be confused with combustible or
flammable products and materials. Combustible and/orThis water heater must be installed in accordance with these instructions,
utility company requirements, local, federal, and national codes.
flammable products and materials should never be stored
in the vicinity of this or any gas appliance.
LOCATION
If your water heater is not equipped with a vent switch it must ONLY be! CAUTION
installed in a room separated from living spaces and supplied with suitable
ventilation directly to the outside. (See Combustion & Ventilation Air
The water heater should not be located in an area where
Section)leakage of the tank or connections will result in damage to
A. A gas fired water heater should not be installed in a space where liquids
the area adjacent to it or to lower floors of the structure.
which give off flammable vapors are to be used or stored. Such liquids
When such areas cannot be avoided, it is recommended
include gasoline, LP gas (butane and propane), paint or adhesives andthat a suitable catch pan, adequately drained, be installed
their thinners, solvents or removers. Because of natural air movement in aunder the water heater. The pan MUST NOT restrictroom or other enclosed space, flammable vapors can be carried somecombustion air flow to bottom of water heater.
distance from where their liquids are being used or stored. The open
NOTE: Auxiliary catch pan installation MUST conform to local code
flame of the water heater’s pilot light or main burner can ignite thesevapors causing an explosion or fire which may result in severe burns or
D. COMBUSTION & VENTILATION AIR — Proper operation of the water
death to those in range, as well as property damage. For these reasons
heater requires air for combustion and ventilation. If the water heater isinstallation of a gas fired water heater in a garage is not desirable.
installed in an unconfined space within a building of conventional frame,
masonry or metal construction, infiltration air is normally adequate for! WARNING
proper combustion and ventilation. However, if the space is confined,
provisions for this air must be made. Location of the water heater shall
If a location in a garage is the only alternative, the gas
ensure adequate air flow for combustion and ventilation and allow easywater heater should be installed so that the open flame ofaccess to piping and water heater components. Requirements pertaining
the pilot and main burner are no less than 45.7 cm
to the necessary space surrounding the heater, as well as requirements(18 inches) above the garage floor, unless specifically
about venting, are included in the building regulations. Consult local andexempted from this by local code, rule, regulation or
national codes and regulations for minimum clearences.
custom. Raising the gas fired water heater will reduce but
NOTE: If the openings are to be covered with a protective
not eliminate the possibility of lighting the vapor of any
screen or grill, the net free area of the covering material
flammable liquids which may be improperly stored or
must be used in determining the size of the openings.
accidentally spilled.
Protective screening for the openings MUST NOT be
The water heater must be located or protected so it is not subject tosmaller than 0.7 cm (1/4 inch) mesh to prevent clogging byphysical damage, for example, by moving vehicles, area flooding etc.
lint or other debris.
B. The water heater should be installed as close as practical to the gas vent
Provisions for combustion and ventilation air must comply with applicableor chimney. Long hot water lines should be insulated to conserve water
codes and standards.
and energy. The water heater and water lines should be protected fromexposure to freezing temperatures. DO NOT install the water heater in
E. CORROSIVE ATMOSPHERES —The water heater should not bebathrooms, bedrooms, any occupied rooms normally kept closed, or in
installed near an air supply containing halogenated hydrocarbons. For
outdoor unprotected areas.
example,the air in beauty shops, dry cleaning establishments, photo
C. Minimum clearance from combustible construction is 2.5 cm (1 inch) sides
processing labs, and storage areas for liquid and powdered bleaches orand rear; 7.6 cm (3 inches) from front of control; 30.5 cm (12 inches) top.
swimming pool chemicals often contain such hydrocarbons. The air there
If clearances stated on Instruction/Warning label, located on front ofmaybe safe to breathe, but when it passes through a gas flame, corrosive
heater, differ from the aforementioned clearances, install heater according
elements are released that will shorten the life of any gas burning
to the clearances stated on the Instruction/Warning label. The water
appliance. Propellants from common spray cans or gas leaks fromheater may be installed on combustible floors, but not directly on
refrigeration equipment are highly corrosive after passing through a flame.
carpeting. If the water heater must be installed on carpeting, place a metal
The limited warranty is voided when failure of water heater is due to aor wood panel beneath water heater, extending beyond its full width andcorrosive atmosphere. (Reference is made to the limited warranty for
depth at least 7.6 cm (3 inches) in all directions. If the water heater iscomplete terms and conditions.)
5Installation
1. INSPECT SHIPMENT—Inspect water heater for possible shipping
damage. Check the marking of the rating plate of the water heater to becertain the type of gas being furnished corresponds to that for which thewater heater is equipped.

! WARNING
The Btu/hr Rating of the relief valve must not be less than the
input rating of the water heater as indicated on the rating label located on front of the heater (1 watt = 3.412 BTU/HR).

2. THERMAL EXPANSION — During installation, a check valve shouldhave been installed in the inlet water line. It may have been installedin the cold water line as a separate back flow preventer, or it may be partof a pressure reducing valve, water meter or water softener. A checkvalve located in the cold water inlet line can cause what is referred to asa ”closed water system”. A cold water inlet line with no check valve orback flow prevention device is referred to as an ”open” water system.

! WARNING
Connect the outlet of the relief valve to a suitable open drain sothat the discharge water cannot contact live electrical parts andto eliminate potential water damage. Piping used should be of a
type approved for hot water distribution. The discharge line must
be no smaller than the outlet of the valve and must pitch downward
from the valve to allow complete drainage (by gravity) of the relief valve and discharge line. The end of the discharge line should
not be threaded or concealed and should be protected from freezing. No valve of any type, restriction or reducer coupling should
be installed in the discharge line.

As water is heated, it expands in volume and creates an increase in thepressure within the water system. This action is referred to as ”thermal
expansion”. In an ”open” water system, expanding water which exceeds
the capacity of the water heater flows back into the city main where thepressure is easily dissipated.
A ”closed water system”, however, prevents the expanding water fromflowing back into the main supply line, and the result of ”thermal
expansion” can create a rapid, and dangerous pressure increase in thewater 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, andrepeated expansion and contraction of components in the water heaterand piping system can cause premature failure of the relief valve, andpossibly the heater itself.Replacing the relief valve will not correct the
problem!

5. TO FILL WATER HEATER — Make certain drain valve is completely closed. Open shut-off valve in cold water supply line. Openeach hot water faucet slowly to allow air to vent from the water
heater and piping. A steady flow of water from the hot water
faucet(s) indicates a full water heater.

! WARNING
Tank MUST BE full of water before pilot is lit. The water heater’s
warranty does not cover damage or failure resulting fromoperation with an empty or partially empty tank.

The suggested method of controlling thermal expansion is to install an
expansion tank in the cold water line between the water heater and thecheck valve. (Refer to Figure 3.) 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 therepeated operation of the relief vale. Other methods of controlling thermal
expansion are also available. Contact your installing contractor, watersupplier, or plumbing inspector for additional information regarding thissubject.

6. GAS SUPPLY - The branch gas supply line to the water heater should be clean
13 mm (1/2 inch) black steel pipe or other approved gas piping material.
A ground joint union or equivalent national standard design certified
semirigid or flexible gas appliance connector should be installed in gas
line closest to the water heater, and a manual gas shut-off valve should
be installed in the gas line prior to the union. The manual gas shut-off
valve should be at least 1.5 meters (5 feet) above the floor and readily
accessible for turning on or off. A sediment trap should be installed at
the bottom of the gas line. (Ref. to Fig. 3)

3. WATER SUPPLY CONNECTIONS — Refer to Fig. 3 for suggested
typical installation. The installation of unions or flexible copper
connectors is recommended on the hot and cold water connections so that the water heater may be easily disconnected for servicing if necessary. The HOT and COLD water connections areclearly marked and are 3/4” NPT on all models. Install a shut-off
valve in the cold water line near the water heater.

Compound used on 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. Do not use excessive force over
42.7 N-m (31.5 Ft. Lbs.) in tightening the pipe joint at the thermostat inlet, particularly if teflon pipe compound is used, as thevalve body may be damaged.

IMPORTANT!! Do not apply heat to the hot or cold water connections. If sweat connections are used, sweat tubing toadapter before fitting adapter to hot or cold water connections on heater. Any heat applied to the hot or cold watersupply fittings will permanently damage them.

The inlet gas pressure to the water heater must not exceed
25 mbar (10.1” w.c) for Natural gas or 57.5 mbar (23.14” w.c.)
Propane gas. For purposes of input adjustment, the nominal inlet
gas pressure (with main burner on) is shown on the water heaterrating plate. If high or low gas pressures are present, contact
your gas supplier for correction.

NOTICE: A check valve must be installed in the cold-water
inlet as per local and national codes and regulations.

7. CHECKING MANIFOLD GAS PRESSURE - ONLY QUALIFIEDSERVICE PERSONNEL MAY VERIFY THE MANIFOLD GASPRESSURE. A manometer, spigot (provided in the Use and Care
Manual bag), and 8mm (5/16 inch) ID flexible hose are required.
Turn the thermostat to the lowest temperature setting. Turn gascock to “PILOT” position. Remove 1/8” NPT pressure tap plug,
located on bottom of thermostat, beside burner supply tube.
Tighten spigot into this threaded hole using standard proceduresto assure correct fit and leak free joints. Connect one end of flexible hose to manometer. Back the screw in the spigot out until
only two threads hold screw in place. Push other end of hoseover barb of spigot, turn thermostat to required setting and measure pressure.

4. RELIEF VALVE — A new combination temperature and pressure
relief valve, complying with the Standard for Relief Valves andAutomatic Gas Shutoff Devices for Hot Water Supply Systems,
ANSI Z21.22, or equivalent local or international standard, must
be installed in the opening provided and marked for the purposeon the water heater. (Refer to Fig. 3.) No valve of any type should
be installed between the relief valve and the tank. Local codesshall govern the installation of relief valves.
The pressure rating of the relief valve must not exceed 10.3 bar(150 psi). This is the maximum working pressure of the water
heater and is marked on the rating plate.
6Installation
The water heater must be isolated from the gas piping system byclosing the manual gas shut-off valve (Refer to Fig. 3), during
any pressure testing of the gas supply piping at pressures equal
to or less than 57.5 mbar (23.14” w.c.) or as described in local
codes.

Vent Connector to Chimney
Union
Vent Switch(Optional)
Heat Trap
15 cm(6" Min.)

Draft Hood

Pitch up
2.1 cm per meter(1¼4" per foot)9. INSTALLATION INSTRUCTIONS FOR VENT SWITCH: The draft hoodis included in the water heater carton. Upon removal from the carton,verify the vent switch is not damaged. Place the draft hood over the flue
opening on the top of the water heater. Orient the draft hood so that thevent switch is close to the vent switch wire connections on the top of thetank. Using two screws, attach the drafthood to the top of the heater.
Attach the female spade connectors on the vent switch wire to the malespade connectors on the vent switch.

Anode
HO

T

Union
R
E
L

Hot Water
Outlet to Fixtures

I
E
F
V
A
L
V
E

CO

LD

Temperature & Pressure
Relief Valve

Thermal Expansion Tank
(If required)Heat Trap
15 cm(6" Min.)

Manual Gas
Shut-Off! DANGERNOTICE: Do NOT pull or twist wiring attached to ventswitch unit as this may damage unit.

To Gas Supply

Sediment Trap

Check Valve

Failure to install or the interruption of the vent switch may
violate local and national safety regulations. Type B11BS
water heaters shall not be operated without the vent switch
sensors installed correctly.

Shut-OffValve

To Cold
Water
SupplyCap! WARNING

Relief Valve Discharge
Line to suitable open drain

Ground Joint Union

The safety of the appliance is inhibited if the vent switch
circuit is disconnected.

Auxiliary
Catch Pan

Thermostatic
Gas Valve
Jacket Door
Drain Valve

Air Gap
15 cm(6")

NOTE: Repeated shutdown due to operation of ventswitch indicates that an improper condition exists.
Contact a licensed plumber or qualified service personel
to correct this issue.

Figure 3. — Typical Installation

10. VENTING - This water heater must be installed with the factory supplied
draft hood in place. (Refer to Fig. 3.) Vent connectors must be attachedto the draft hood outlet to connect the water heater to the gas vent orchimney. The vent connectors must be the same size (diameter) as thedraft hood outlet or larger, never smaller. For proper venting in certain
installations a larger vent connector size may be needed.

Tighten the spigot screw and check for gas leaks before placing the water heater in service.

! DANGER
Do not attempt to convert this water heater for use witha different type of gas other than the type shown on therating plate. Such conversion could result in hazardous operating conditions.

Horizontal vent connectors must be pitched upward to the chimney atleast 2.10 cm per meter (1/4” per foot). Single wall vent connectors mustbe at least 15.5 cm (6 inch) from adjacent unprotected combustible
surfaces. Joints of vent connectors should be securely fastened bysheet metal screws or other approved method.

! WARNING! WARNING

8. LEAK TESTING - The water heater and its gas connections
must be leak tested at normal operating pressures before it isplaced in operation. Turn on the manual gas shut-off valve near
the water heater (Refer to Fig. 3). Use a soapy water solution
to test for leaks at all connections and fittings. Bubbles indicate a gas leak that must be corrected. The factory connections to the thermostat should also be leak tested immediately
after the water heater is placed in operation.

Failure to install the draft hood and properly vent thewater heater to the outdoors as outlined above canresult 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 this water heater unless it
is properly vented and has as adequate air supply forproper operation.
Be sure to inspect the vent system for proper installation at initial start-up; and at least annually thereafter. Refer to Maintenance section of this manual for more information regarding ventsystem inspections.

! WARNING
Never use open flame to test for gas leaks, as bodily injury, property damage, or death could result.

! WARNINGPRESSURE TESTING THE GAS SUPPLY SYSTEM - The water
heater and its manual gas shut-off valve must be disconnected from the gas supply piping system during any high pressure
testing of that system at pressures in excess of
57.5 mbar (23.14” w.c.).

The manufacturer’s warranty does not cover any
damage or defect caused by installation, attachment or use of any type of energy saving or other7Installation
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 thewater heater and may endanger life and property.
The manufacturer disclaims any responsibility forsuch loss or injury resulting from the use of such
unauthorized devices.

. • Do not cover burner access panel, thermostat/gas
valve or pressure and temperature relief valve.
• Do not cover operating instructions or warning labels
attached to the water heater nor attempt to relocate
them on the exterior of the insulation blanket.

• Do not apply insulation to bottom or the 51 mm (2”)! WARNING
Application of any external insulation to this water heater
will require careful attention to the following:

space between the bottom pan of the water heater andthe floor, as this area must be unobstructed so as not
to restrict combustion air flow to the burner.

• Do not apply insulation to the top of the water heater,• Do inspect the insulation blanket frequently to makecertain it has not sagged and is restricting the combustion air to the bottom of the water heater, as this
could result in an unsafe operating condition.

as this will interfere with the safe operation of the drafthood

Installation Check List
❑ Approved pipe joint compound used.

A Water Heater Location❑ Close to area of vent.

❑ Soap and water solution used to check all connections and fittings
for possible gas leak.

❑ Indoors and protected from freezing temperatures.

❑ Gas Company inspected installation (if required).

❑ Proper clearance from combustible surfaces observed and water
heater not installed on carpeted floor.

D. Relief Valve❑ Sufficient fresh air supply for proper operation of water heater.

❑ Temperature and Pressure Relief Valve properly installed anddischarge line run to open drain.

❑ Air supply free of corrosive elements and flammable vapors.

❑ Discharge line protected from freezing.

❑ Provisions made to protect area from water damage.

E. Venting❑ Sufficient room to service heater.

❑ Flue baffle properly hung in top of heater’s flue.

B. Water Supply❑ Draft hood properly installed.

❑ Water heater completely filled with water.

❑ Vent connector(s) pitched upward to chimney require a minimum❑ Water heater and piping air vented.

of 2.10 cm per meter (1/4" per foot) of length .

❑ Water connections tight and free of leaks.

❑ Vent connector(s) securely fastened together with screws.

❑ Check valve installed in inlet.

❑ Single wall vent connector(s) at least 15.24 cm (6”) from combustible
material.

C. Gas Supply❑ Vent switch should be in full contact with drafthood surface.

❑ Gas line equipped with shut-off valve, union and sediment❑ Vent switch connections are secure.

trap.

8

Operation
Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labelson 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, bodily injury, or death. Should you have any problems reading or following the
instructions in this manual, STOP, and get help from a qualified person.
1. MANUAL LIGHTING PROCEDURE - Lighting procedures are outlined on the label pictured below. This label is also located on the water heater near the thermostat.

FOR YOUR SAFETY READ BEFORE OPERATINGWARNING: 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 must be lighted by hand.
When lighting the pilot, follow these instructions exactly.

• If you cannot reach your gas supplier, call the fire department.

B. BEFORE LIGHTING smell all around the appliance areafor gas. Be sure to smell next to the floor because somegas is heavier than air and will settle on the floor.

C. Use only your hand to turn the gas control knob. Neveruse tools. If the knob will not turn by hand, don't try torepair it, call a qualified service technician. Force or
attempted repair may result in fire or explosion.

WHAT TO DO IF YOU SMELL GAS:
• Do not try to light the 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.

D. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician
to inspect the appliance and to replace any part of thecontrol system and any gas valve that has been underwater.

LIGHTING INSTRUCTIONS
1. STOP! READ THE SAFETY INFORMATION ABOVE ON
THIS LABEL.

7. TURN THE GAS COCK KNOB COUNTER CLOCKWISE
TO "PILOT" POSITION.

2. TURN GAS COCK KNOB CLOCKWISE TO

8. PUSH DOWN ON THE "GAS COCK KNOB" UNTIL IT
COMES TO REST ON THE TOP OF CONTROL. HOLD "GASCOCK KNOB" DOWN AND LIGHT THE PILOT WITH A
MATCH. CONTINUE TO HOLD THE"GAS COCK KNOB" IN
FOR ABOUT ONE (1) MINUTE AFTER THE PILOT IS LIT
RELEASE KNOB AND IT WILL POP BACK UP. PILOTSHOULD REMAIN LIT. IF IT GOES OUT, REPEAT STEPS
2 THROUGH 8.

GAS COCK
KNOB

INDEX
TEMPERATURE
DIAL"OFF" POSITION.
3. TURN TEMPERATURE DIAL COUNTERCLOCKWISE TO LOWEST SETTING.

• IF THE KNOB DOES NOT POP UP WHEN RELEASED,STOP AND IMMEDIATELY CALL YOUR SERVICE TECHNICIAN OR GAS SUPPLIER.

4. WAIT FIVE (5) MINUTES TO CLEAR OUT ANY GAS. IF
YOU THEN SMELL GAS, STOP! FOLLOW "B" IN THE
SAFETY INFORMATION ABOVE ON THIS LABEL. IF
YOU DON'T SMELL GAS, GO TO THE NEXT STEP.

• IF THE PILOT WILL NOT STAY LIT AFTER SEVERALTRIES, TURN THE "GAS COCK KNOB" TO "OFF" AND
CALL YOUR SERVICE TECHNICIAN OR GAS SUPPLIER.

5. REMOVE BOTH THE OUTER DOOR AND INNER PILOTBURNER
DOOR FROM THE WATER HEATER.
THERMOCOUPLE

6. FOLLOW THE METAL TUBE
FROM GAS CONTROL THRU DOOROPENINGS. THE PILOT IS LOCATED ON
THE HORIZONTAL LEG OF THE LARGER
TUBE (OR BURNER).

9. REPLACE INNER AND OUTER DOORS.
10. TURN "GAS COCK KNOB" COUNTER CLOCKWISE
TO "ON".
11. TURN THE TEMPERATURE DIAL TO THE DESIREDSETTING.

TO TURN OFF GAS TO APPLIANCE
1. TURN TEMPERATURE DIAL COUNTERCLOCKWISE

2. TURN GAS COCK KNOB CLOCKWISE

TO LOWEST SETTING.

POSITION.

9TO "OFF

Operation
Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labelson 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, bodily injury, or death. Should you have any problems reading or following the
instructions in this manual, STOP, and get help from a qualified person.
2. PIEZO SYSTEM LIGHTING PROCEDURE - Lighting procedures are outlined on the label pictured below. This label is also located on the water heater near the thermostat.

FOR YOUR SAFETY READ BEFORE OPERATINGWARNING: 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 is equipped with a piezoelectric igniter whichlights the pilot. When lighting the pilot, follow these
instructions exactly.
B. BEFORE LIGHTING smell all around the appliance areafor gas. Be sure to smell next to the floor because somegas is heavier than air and will settle on the floor.

• 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

WHAT TO DO IF YOU SMELL GAS:

C. Use only your hand to turn the gas control knob. Never use
tools. If the knob will not turn by hand, don't try to repair it,
call a qualified service technician. Force or attempt to repair
may result in a fire or explosion.

• Do not try to light the appliance.
• Do not touch any electrical switch; do not use any
phone in your building.

D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect theapplaince and to replace any part of the control system andany gas control which has been under water.

LIGHTING INSTRUCTIONS
1. STOP! READ THE SAFETY INFORMATION ABOVE ON
THIS LABEL.
2 . TURN THE GAS COCK KNOB CLOCKWISE
TO"OFF" POSITION.

7. TURN THE GAS COCK KNOB COUNTER
CLOCKWISE
TO “PILOT” POSITION.

GREY REMOVABLE CAPGAS COCK KNOBPIEZO ELECTRIC IGNITERINDEXTEMPERATURE
DIAL

3. TURN THE TEMPERATURE DIAL COUNTER CLOCKWISE TO LOWEST SETTING.

8. PUSH DOWN THE “GAS COCK KNOB” UNTIL IT
COMES TO REST ON THE TOP OF CONTROL. HOLD“GAS COCK KNOB” DOWN AND IMMEDIATELY
DEPRESS THE PIEZOELECTRIC IGNITER UNTIL YOU
HEAR A LOUD CLICK. REPEAT IMMEDIATELY IF PILOTDOES NOT LIGHT ON THE FIRST TRY. IF THE PILOTDOES NOT LIGHT BY THE FOURTH ATTEMPT, REPEATSTEPS 2 THROUGH 8. AFTER THE PILOT IS LIT,
CONTINUE TO HOLD THE “GAS COCK KNOB” IN FORABOUT ONE (1) MINUTE . RELEASE KNOB AND IT
WILL POP BACK UP. PILOT SHOULD REMAIN LIT. IF
IT GOES OUT, REPEAT STEPS 2 THROUGH 8.

• IF KNOB DOES NOT POP BACK UP WHEN
RELEASED, STOP AND IMMEDIATELY CALL YOURSERVICE TECHNICIAN OR GAS SUPPLIER.
• IF THE PILOT WILL NOT STAY LIT AFTER SEVERALTRIES, TURN THE “GAS COCK KNOB” TO “OFF” AND
5. REMOVE BOTH THE OUTER DOOR AND INNER DOORCALL YOUR SERVICE TECHNICIAN OR GASFROM THE WATER HEATER.
SUPPLIER.
PILOT
THERMOCOUPLE
BURNER
9. REPLACE INNER AND OUTER DOORS.
6. FOLLOW THE METAL TUBE FROM
10. TURN “GAS COCK KNOB” COUNTERGAS CONTROL THRU DOORPIEZOCLOCKWISE
TO “ON”.
OPENINGS. THE PILOT IS LOCATEDELECTRIC
IGNITERON THE HORIZONTAL LEG OF THE
11. TURN TEMPERATURE DIAL TO THE DESIREDLARGER TUBE ( OR BURNER).
SETTING.
4. WAIT FIVE (5) MINUTES TO CLEAR OUT ANY GAS. IF
YOU THEN SMELL GAS, STOP! FOLLOW “B” IN THE
SAFETY INFORMATION ABOVE ON THIS LABEL. IF YOU
DON’T SMELL GAS, GO TO THE NEXT STEP.

TO TURN OFF GAS TOAPPLIANCE
1. TURN TEMPERATURE DIAL COUNTER CLOCKWISE
TO LOWEST SETTING.

2. TURN GAS COCK KNOB CLOCKWISE
POSITION

10

TO “OFF”

Operation
SAFETY PRECAUTIONS
A. Do turn off manual gas shut-off valve if water heater has been
subjected to over heating, fire, flood, physical damage or if gas
supply fails to shut off.

or MAINTENANCE instructions, it is recommended that a qualified
person or serviceman perform the work.
G. If your water heater is not equipped with a vent switch it may ONLY be
installed in a room separated from living spaces and provided withappropriate ventilation directly to the outside.

B. Do Not turn on water heater unless it is filled with water.
C. Do Not turn on water heater if cold water supply shut-off valve isclosed.

! CAUTION

D. Do Not store or use gasoline or other flammable vapors andliquids, such as adhesives or paint thinner, in vicinity of this or any
other appliance. If such flammables must be used, open doors andwindows for ventilation, and all gas burning appliances in vicinity
should be shut off, including their pilot lights, to avoid vapors
igniting.

Hydrogen gas can be produced in a hot water system
served by this water heater that has not been used for along period of time (generally two weeks or more).
HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To
dissipate such gas and to reduce risk of injury, it isrecommended that the hot water faucet be opened forseveral minutes at the kitchen sink before using any
electrical appliance connected to the hot water system. If
hydrogen is present, there will probably 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.

NOTE: Flammable vapors may be drawn by air currents fromsurrounding areas to the water heater.
E. Do not allow combustible materials such as newspaper, rags or mops
to accumulate near water heater.
F. If there is any difficulty in understanding or following the OPERATION
3. WATER TEMPERATURE SETTING— The temperature of the water inthe heater can be regulated by setting the temperature dial on front of thethermostat. (Refer to Fig. 4.) The thermostat was set at its lowest setting
before the water heater was shipped from the factory.

TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
Temperature
49° C (120° F)
52° C (125° F)
54° C (130° F)
57° C (135° F)
60° C (140° F)
63° C (145° F)
66° C (150° F)
68° C (155° F)

Grey Removable Cap

Gas Cock Knob

Gas CockIndex
40° C (104°F)(Approx.)

Table courtesy of Shriners Burn Institute

Thermostat
Index

50° C (122°F)(Approx.)Maximum water temperatures occur just after burner has shut off. To
find hot water temperature being delivered, turn on a hot water faucet
and place a thermometer in the hot water stream and read thethermometer.

1

3

2

4

60° C (140°F)(Approx.)Time to Produce Serious Burn
More than 5 minutes
11/2 to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 11/2 seconds
About 1 second

70° C (158°F)(Approx.)Mixing valves for reducing point of use water temperature by mixing hot
and cold water in branch water lines are available. Contact a licensed
plumber or the local plumbing authority for further information.
4. ADJUSTMENTS— There are no user adjustments (other than watertemperature selection) required on this water heater. The thermostatic
valve is equipped for total regulation of the main burner and pilot gas
pressures. The burner does not require adjustment.

Figure 4 — Thermostatic Gas Valve.

Safety and energy conservation are factors to be considered whenselecting the water temperature setting of water heater’s thermostat. The
lower the setting the greater the savings in energy and operating cost.

HIGH ALTITUDE— Ratings of gas appliances are based on sea
level operation and need not be changed for installations at elevations up to 609 m (2,000 feet). For installations above 609 m(2,000 feet), the input must be reduced per the local or national
fuel gas code or equivalent regulation for each 304 m (1,000 feet)above sea level. Contact the local gas supplier for more information.

! WARNING
NOTE: Low water temperatures can lead to bacterial
growth, while high temperatures increase the risk ofscalding and burns.

11

Operation
5. SAFETY CONTROLS— The thermostat is constructed with a built insafety shutoff device designed to shut off the gas supply to the burner inthe event the pilot flame is extinguished for any reason. The thermostat is
also equipped with a gas shut-off device that will shut off the gas supply tothe burner, if the water in the water heater exceeds normal operating
temperatures. Refer to the Troubleshooting Section of this manual, or
contact your dealer for service.

After a very long shut-down period, the water heater’s operation andcontrols should be checked by qualified service personnel. Make certain
the water heater is filled before again placing it in operation.
9. DRAINING WATER HEATER—! CAUTION

6. EMERGENCY SHUTDOWN—

Shut off gas at thermostat gas cock or supply line manual
shut-off valve before draining water from the water heater.

! WARNING

In order to drain water, turn off cold water supply, then it is necessary to
open a hot water faucet or lift the handle on the relief valve to allow air toenter the tank. Attach a garden hose to the drain valve on the water
heater and direct the stream of water to a drain where it will do nodamage.

Should overheating occur or the gas supply fail to shut off,
turn off the manual gas control valve to the appliance.
If water heater has been subjected to fire, flood, or physical damage turnoff the manual gas control (shut-off) valve, and do not operate the water
heater again until it has been checked by qualified personnel.

! DANGERNOTE: Replace any part of the gas control system which has been
under water.

The water drained from the tank may be hot enough topresent a SCALD HAZARD and should be directed to asuitable drain to prevent injury or damage.

7. CONDENSATION— Condensation can form on the tank when it is first
filled with cold water. The condensation might also occur with a heavy
water draw and very cold inlet water. Drops of water falling on the burner
can produce a sizzling or pinging sound, and water may also be seen
beneath the water heater. This condition is not unusual, and will disappear
after the water in the water heater becomes heated. If, however, thecondition is continuous, examine the piping and fittings for possible leaks.

10. ANODE— This water heater is equipped with an anode rod designed toprolong the life of the glass lined tank. Refer to Fig. 3 for location. The
anode rod is slowly consumed cathodically, thereby eliminating or
minimizing corrosion of the glass lined tank. Water sometimes contains ahigh sulfate and/or mineral content and together with the cathodic
protection process can produce a hydrogen sulfide or rotten egg odor in
the heated water. Please contact a local plumber or qualified service
personnel to correct this issue.

8. VACATION AND LONG TIME SHUT-DOWN— If the water heater is toremain idle for an extended period of time, the gas should be turned off toconserve energy. The water heater and piping should be drained if theymight be subjected to freezing temperatures.

NOTE: Do not remove the anode-rod from the water heater’s tank,except for inspection and/or replacement, as permanent removal will
shorten the life of the glass lined tank and effect the water heater
warranty.

NOTE: Refer to Hydrogen Gas Caution, in Safety Precautions
Section on page 11.

Maintenance
Properly maintained, your water heater will provide years of dependable
trouble free service. It is suggested that a regular routine maintenanceprogram be established and followed by the user. It is further recommended
that a periodic inspection of the thermostat, burner, relief valve, internal
flueway and venting system should be made by service personnel qualified
in gas appliance repair.

plumber or qualified service personnel to correct this issue.
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
C. The area near the water heater must be kept free of flammable liquids
such as gasoline or paint thinners, adhesives and other combustible
materials.

1. ROUTINE PREVENTATIVE MAINTENANCE
A. The water heater’s internal flue must be inspected annually to be certain
it is clean by removing the draft hood and flue baffle. (Refer to Fig. 2A.)
When reinstalling the flue baffle make certain it is hung securely by its
hanger at the top of the flue way. Remove any scale that may have fallen
on the burner or floor shield. Reinstall the draft hood. Inspect gas venting
system to make certain vent connector from draft hood to chimney isproperly positioned and securely attached and inspect chimney.
Replace any corroded through vent connector and remove any
obstruction in vent connector or chimney.

For your safety, cleaning of main burner should be
performed ONLY by qualified service personnel, as it
involves disconnection of gas piping and leak testing.

B. Visually inspect the burner annually while firing and pilot burner flamewith main burner off. (Refer to Figure 5 for normal flame pattern.) If any
unusual burner operation is noted, the water heater should be shut off
until qualified service assistance can be obtained. Please contact a local

E. At least once a year, lift and release the lever handle on the temperaturepressure relief valve, located near the top of the water heater, to makecertain the valve operates freely and allow several liters to flush throughdischarge line. Make certain the discharged water is directed to an open
drain.

! CAUTION

D. For adequate combustion (proper burner operation) and ventilation, makecertain the flow of air to the water heater is not obstructed.

12Maintenance
F. A water heater’s tank can act as a settling basin for solids suspended in
the water. It is, therefore, not uncommon for hard water deposits toaccumulate in the bottom of the tank. Deposits should not be allowed toaccumulate as this can affect the service life of the water heater. It issuggested that a few quarts of water be drained from the water heater’stank every month. If sufficient hard water deposits accumulate, arumbling or pounding sound can occur. There is no danger involved andthe efficiency of the water heater is not seriously affected, but the noise
can be annoying. Your plumbing contractor should be contacted to clean
the tank of these deposits.
G. Rapid closing of faucets or solenoid valves in automatic water using
appliances can cause a pounding “water hammer” sound. “Water
hammer” can be described as a banging noise heard in a water pipe
following an abrupt alteration of the flow with resulting pressure surges.
Strategically located risers in the water pipe system can be used tominimize the problem. Also water hammer arresting devices are usuallyavailable from your plumber or local plumbing supply store.

Figure 5. — Main Burner and Pilot Flame Pattern! DANGER
Before manually operating the relief valve, make certain noone will be exposed to the danger of coming in contact withthe hot water released by this valve. The water may be hot
enough to create a SCALD hazard. The water released
should be directed to a suitable drain to prevent injury or
damage.

2. ANODE ROD INSPECTION—The anode rod should be removed fromthe water heater’s tank annually for inspection and replaced when morethan 15 cm (6”) of core wire is exposed at either end of the rod. Refer toFig. 3 for anode rod location. Make certain cold water supply is turned off
before removing anode rod. Please contact a local plumber or qualified
service personnel to correct this issue.

NOTE: If the temperature and pressure relief valve on thewater heater discharges periodically, this may be due tothermal expansion in a “Closed” water system. Contact
the water supplier or your plumbing contractor on how tocorrect this. DO NOT plug the relief valve outlet.

How to Obtain Service Assistance
When contacting the manufacturer, the following information should bemade available:

1. Should you have any questions about your new water heater, or if it
requires adjustment, repair, or routine maintenance, it is suggested thatyou first contact your installer, plumbing contractor or previously agreed
upon service agency. In the event that the firm has moved, or isunavailable, refer to the local utility for qualified service assistance.

A. Model and serial number of the water heater as shown on the rating plateattached to the jacket of the heater.
B. Address where water heater is located and can be seen.
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 problem as you can best describe them.
F. List of people, with dates, who have been contacted regarding yourproblem.

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:
2600 Gunter Park Drive East
Montgomery, Alabama U.S.A. 36109-1413
xportsales@rheem.com

13

Replacement Parts List
Instructions for placing a Parts Order:
Address parts orders to the distributor or store from where the heater was purchased.
All parts orders should include:
1. Model number and Serial number of heater (from rating plate).
2. Specify type of gas (Natural, Propane, or Butane) as listed on rating plate.
3. Part Description (as noted below) and number of parts desired.

115, 150, 190, & 285 Liter
Models Natural or LP Gas
18*

14

12 A

17

*Piezo Assembly

12

1
19
13

15
3

16

2
7

8

9
1

6
7

3

Ref.
No.

Part Description

Qty.
Req’d

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
12A.
13.
14.
15.
16.
17.
18.*
19.*

Thermostat
Pilot Supply Tube
Thermocouple
Burner Supply Tube
Burner Orifice
Burner
Pilot Burner
Drain Valve Shroud
Drain Valve
Jacket Door
Inner Door
Flue Baffle
Flue Baffle Hanger
Anode Rod
Draft Hood
Dip Tube
Dip Tube Gasket
T&P Relief Valve
Vent Switch
Piezo Igniter

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

2

5
11

4
10

* Optional Equipment! CAUTION
For your safety, DO NOT attempt repair of gas piping, thermostat, burners, vent connectors or other safety devices. Refer
repairs to qualified service personnel.

14Trouble Shooting Guide
NATURE OF TROUBLE

POSSIBLE CAUSESERVICE

Unable to light pilot

1. Gas knob dial not correctly positioned
2. Pilot orifice clogged
3. Pilot tube pinched or clogged
4. Air in gas line

Follow lighting instructions** Clean or replace** Clean, repair or replace** Purge air from gas line

Pilot does not stay lit
when gas cock knob .
is released

1. Loose Thermocouple
2. Thermocouple breakdown
3. ECO tripped.
4. Safety magnet breakdown
5. Vent Switch/Circuit Breakdown
a. Wire connection loose.
b. Damaged vent switch.
c. Down draft condition.
d. Vent fully or partially blocked.
e. Improper vent installation.

** Tighten connection at thermostat** Replace thermocouple.
Flush tank with cold water to reset ECO.
** Replace thermostat

Not enough hot water

1. Heater undersized
2. Low gas pressure

Reduce rate of hot water usage** Check gas supply pressure andmanifold pressure

Water too hot or not
hot enough

1. Thermostat setting too high or low
2. Thermostat out of calibration
3. High water temperature followed bypilot outage

Change setting as required** Replace** Thermostat out of calibration, replace

Yellow flame
Sooting

1. Scale on top of burner
2. Combustion air inlets or flueway
restricted
3. Not enough combustion or ventilation air
supplied to the room

Shut off heater and remove scale
Remove lint or debris and inspect air
inlet opening for restriction
Refer to Sec. E in Introduction
section of this manual

Rumbling noise

1. Scale or sediment in tank

Clean tank - See Maintenance, Sec. 1F

Rattling noise during
periods of water usage

1. Heat Trap fittings in operation (If heater is equipped with theseenergy saving devices)

None. The rattling noise is normal for
Heat Trap fittings when in operation anddoes not indicate a need for service.

** Reconnect wires.
** Replace vent switch.
** Correct downdraft conditions.
** Shut off heater and remove restrictions.
** Refer to vent installation section forproper installation.

! CAUTION** For your safety, DO NOT attempt repair of thermostat, burners or gas piping. Refer repairs to qualified service
personnel.

Model No.

Serial No.

Date of Installation
15

Installed By:

16