Lochinvar FV-S Service Manual

INSTALLATION & SERVICE MANUAL

For Flammable Vapor Ignition Resistant System

Equipped Water Heater

FV-I&S

GAS-FIRED WATER HEATER

WARNING

If the information in these instructions is not followed exactly,
a fire or explosion may result causing property damage,
personal injury or death.

FOR YOUR SAFETY
Do not store or use gasoline or other flammable, combustible,
or corrosive 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 telephone
in your building.

• Immediately call your gas supplier from a neighbor’s
telephone. 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.

For your family’s comfort, safety and convenience, we recommend
this water heater be installed and serviced by a plumbing
professional.

TABLE OF CONTENTS

GENERAL INFORMATION................................................................1

INSTALLATION..........................................................................2

Locating The Water Heater.................................................2

Minimum Clearances ...........................................................3

Venting...............................................................................3

Combustion Air Supply .......................................................3

Water Connections .............................................................4

Gas Connections.................................................................5

GENERAL OPERATION....................................................................6

Lighting and Shutdown Instructions ..................................6

Thermostat Adjustment ......................................................7

Burner Flame Check.............................................................7

MAINTENANCE ...............................................................................7

INSTALLATION DRAWING FOR POTABLE WATER.............................9

INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND

SPACE HEATING ...........................................................................10

GENERAL INFORMATION

This gas-fired water heater is design certified by CSA International under the
applicable American National Standard, Z21.10.1 or CSA 4.1-(as indicated on
the rating plate), available from CSA International, 8501 East Pleasant Valley
Road, Cleveland, OH U.S.A. 44131-5575.

Special Flammable Vapor Ignition Resistant System:

This water heater is equipped with a Flammable Vapor Ignition Resistant System.
In the event of improper usage or storage of gasoline or other flammable
materials in the location where the water heater is installed, the technology will
resist ignition of the flammable vapors outside the confines of the water heater.

The Flammable Vapor Ignition Resistant System features:

• Advanced Flame Arrestor Design.

• Resettable Thermal Switch to prevent burner/pilot operation with
restricted airflow.

• Piezo Igniter

• Sight Window to observe operation of pilot and burner.

FOR YOUR SAFETY: Activation of the Flammable Vapor Ignition Resistant
System occurs when flammable vapors are drawn into the water heater and are
combusted. If flammable vapors are detected:

• Do not try to light any appliance.

• Do not touch any electrical switch; Do not use any phone in your building.

• Leave the premises and immediately call the fire department from a
neighbor’s phone. Follow the fire department’s instructions.

Once the flammable vapor has been evacuated, contact your plumbing
professional or the manufacturer for further instructions. Replacement of a
Flammable Vapor Ignition Resistant System equipped water heater due to a
flammable vapor shutdown is not covered under the terms of the limited
warranty.

This water heater must be installed in accordance with local codes. In the
absence of local codes, it must be installed in compliance with the National Fuel
Gas Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural
Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation
Code (Latest Edition). The warranty for this water heater is in effect only when
the water heater is installed, adjusted, and operated in accordance with these
Installation and Operating Instructions. The manufacturer will not be liable for
any damage resulting from alteration and/or failure to comply with these
instructions.

This water heater is not design certified for installation in a mobile home. Such
an installation may create a hazardous condition and will nullify the warranty.

This water heater has been designed and certified for the purpose of heating
potable water. The installation and use of this water heater for any purpose
other than the heating of potable water may cause damage to the water
heater, create a hazardous condition, and nullify the warranty.

CAUTION

Incorrect operation of this appliance may create a hazard to life
and property and will nullify the warranty.

Do not use this appliance if any part has been submerged in water. Immediately
call a qualified service technician to inspect the appliance and to replace any
part of the control system and any gas control which has been under water.
Depending upon the individual circumstances, it may be necessary to replace
the entire water heater.

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DANGER

Do not store or use gasoline or other flammable, combustible,
or corrosive vapors and liquids in the vicinity of this or any
other appliance.

IMPORTANT

Before proceeding, please inspect the water heater and components for
possible damage. DO NOT install any damaged components. If damage is evident
then please contact the supplier where the water heater was purchased or the

manufacturer listed on the rating plate for replacement parts .

This water heater has been manufactured for operation at altitudes from sea
level to 2000 feet (610m) (unless otherwise specified on the water heater
rating plate). For use of this appliance at an elevation greater than 2000 feet
(610m), contact the dealer or manufacturer listed on the rating plate for
information on any necessary modification. Uncorrected operation of this
appliance may create a hazard to life and property.

Make sure that you check the rating plate and combination gas control on the
water heater to be certain that the type of gas being supplied corresponds with
the marking on the rating plate and combination gas control.

A sacrificial anode is used to extend tank life. The removal of this anode, for
any reason, will nullify the warranty. In areas where water is unusually active,
an odor may occur at the hot water faucet due to a reaction between the
sacrificial anode and the impurities in the water. If this should happen, an
alternative anode may be purchased from the supplier that installed this water
heater. This will minimize the odor while protecting the tank. Additionally, the
water heater should be flushed with appropriate dissolvers to eliminate any
bacteria.

INSTALLATION

Locating The Water Heater

WARNING

Water heaters are heat producing appliances. To avoid damage or injury there
shall be no materials stored against the water heater or vent-air intake system and
proper care shall be taken to avoid unnecessary contact (especially by children)
with the water heater and vent-air intake components. UNDER NO

CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS GASOLINE
OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS
WATER HEATER, VENT-AIR INTAKE SYSTEM OR IN ANY LOCATION
FROM WHICH FUMES COULD REACH THE WATER HEATER OR
VENT-AIR INTAKE SYSTEM.

This water heater MUST NOT be installed in any location where
gasoline or flammable vapors are likely to be present, unless the
installation is such to eliminate the probable ignition of gasoline or
flammable vapors.

Water heaters in residential garages must be installed and located,
or protected, to avoid physical damage. For other installations
refer to local codes. In the absence of local codes, the water heater
must be installed in compliance with the National Fuel Gas Code,
(ANSI Z223.1- Latest Edition), or in Canada CAN/CGA B149.1
Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2
Propane Installation Code (Latest Edition).

The location of this water heater is of the utmost importance. Before installing
this water heater read the Installation section of these instructions. After
reading these Installation and Operating Instructions, select a location for the
water heater where the floor is level and is easily accessible to gas and water
supply lines. DO NOT locate the water heater where water lines could

be subjected to freezing temperatures. Make sure the cold water
pipes are not located directly above the gas control so that
condensate during humid weather does not drip on the controls.

Water heater corrosion and component failure can be caused by the heating
and breakdown of airborne chemical vapors. Examples of some typical
compounds that are potentially corrosive are: spray can propellants, cleaning
solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals,
calcium and sodium chloride, waxes and process chemicals. These materials
are corrosive at very low concentration levels with little or no odor to reveal
their presence. NOTE: DAMAGE TO THE WATER HEATER CAUSED BY

EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE
WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE
HAS OR WILL OCCUR. DO NOT STORE ANY POTENTIALLY
CORROSIVE COMPOUNDS IN THE VICINITY OF THE WATER HEATER.

WARNING

Liquefied petroleum gases/propane gas are heavier than air and will remain
at floor level if there is a leak. Basements, crawl spaces, closets and areas
below ground level will serve as pockets for accumulation of leaking gas.
Before lighting, smell all around the appliance area for gas. Be sure to smell
next to 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 telephone
in your building.

• Immediately call your gas supplier from a neighbor’s
telephone. Follow the gas supplier’s instructions.

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

DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!

WARNING

DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT
CERTAIN OF THE FOLLOWING:

• Liquefied petroleum gases/propane gas and natural gas have an
odorant added by the gas supplier that aids in detection of the gas.

• Most people recognize this odor as a “sulfur” or “rotten egg” smell.

• Other conditions, such as “odorant fade” can cause the odorant to
diminish in intensity, or “fade”, and not be as readily detectable.

• If you have a diminished sense of smell, or are in any way unsure of
the presence of gas, immediately contact your gas supplier from a
neighbor’s telephone.

• Gas detectors are available. Contact your gas supplier or plumbing
professional for more information.

Proper venting practices must be considered when selecting a location for this
water heater. For exact venting specifications, please consult the Venting
section of these Installation and Operating Instructions.

This water heater must be located in an area where leakage of the tank, water
line connections, or the combination temperature and pressure relief valve will
not result in damage to the area adjacent to the water heater or to lower floors
of the structure. When such locations cannot be avoided, a suitable drain pan

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must be installed under the water heater. The drain pan must be no greater
than 1-½ inches (3.8 cm) deep and have a minimum length and width of at
least four (4) inches (10.2 cm) measured from the jacket of the water heater.
The drain pan, as described above, can be purchased from your plumbing
professional. The drain pan must be piped to an adequate drain. The piping
must be at least 3/4 inch (1.9 cm) in diameter and pitched for proper drainage.

It is recommended that a minimum clearance of four (4) inches (10.2 cm) be
provided on the side of the water heater for servicing and maintenance of the
combination temperature and pressure relief valve.

MINIMUM CLEARANCES

WARNING

Failure to adhere to these installation and operating instructions
may create a hazard to life and property and will nullify the
warranty.

This installation shall allow access to the front of the water heater and adequate
clearance shall be provided for servicing and operating this water heater. The
water heater may be installed on either a combustible or non-combustible floor.
If the water heater is to be installed directly on carpeting, it shall be installed on
top of a metal or wood panel (or equivalent) extending beyond the full width
and depth of the appliance by at least three (3) inches (7.6 cm) in any
direction or, if the appliance is to be installed in an alcove or closet, the entire
floor shall be covered by the panel. If the rating plate or the label on the

front of the heater specifies minimum clearances less than those
listed in the below table, the water heater may be installed in
accordance with the minimum clearances listed on the rating plate
or the label on the front of the heater.

Vent piping must be attached to the draft diverter outlet to connect the water
heater to the gas vent or chimney. The following minimum clearances must be
followed when connecting vent piping:

a) The vent connector must be the same nominal size as the draft

diverter.

b) The vent connector should not exceed 15 feet (4.5m) in length (for

power vent appliances, refer to supplemental instructions), must not
project into the chimney beyond the inner wall and should contain the
least possible number of bends.

c) All horizontal runs should have a minimum rise of ¼ inch(2.1cm/m)

per foot of run.

d) Joints of vent connectors shall be securely fastened by sheet metal

screws or other approved methods.

e) All single wall vent connectors must be at least 6" (15cm) from

combustible surfaces.

f) Vent connectors made of single-wall metal pipe shall not pass through

any attic, inside wall, concealed space, or any floor. When a single-wall
metal pipe passes through an exterior wall constructed of
combustible material, it shall be guarded at the point of passage by a
ventilated metal thimble at least 4" (10cm) larger in diameter than
the connector. (Consult National Fuel Gas Code, ANSI Z223.1and/or
CAN/CGA B149, Installation Codes).

A separate vent for each application is strongly recommended. If combined
venting of multiple appliances is necessary or if an unusual situation arises,
consult the National Fuel Gas Code, ANSI Z223.1and/or CAN/CGA B149,
Installation Codes (latest editions), for sizing and installation information.

COMBUSTION AIR SUPPL Y

If it is necessary to install this water heater in an alcove, use the clearances
listed in Figure 1.

Figure 1

VENTING

WARNING

The vent system must be installed properly. Failure to properly install the vent
system could result in property damage, personal injury, or death.

Place the draft diverter over the flue opening at the top of the water heater by
inserting the tips of the draft diverter legs into the four (4) holes provided in the
water heater top. On some models, line up the holes in the draft diverter legs
with the holes provided on top of the water heater. Secure the draft diverter to
the water heater with sheet metal screw. (See Figure 5)

WARNING

Liquefied petroleum gases/propane gas are heavier than air and will remain
at floor level if there is a leak. Basements, crawl spaces, closets and areas
below ground level will serve as pockets for accumulation of leaking gas.
Before lighting, smell all around the appliance area for gas. Be sure to smell
next to 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 telephone
in your building.

• Immediately call your gas supplier from a neighbor’s
telephone. Follow the gas supplier’s instructions.

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

DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!

IMPORTANT

The flow of combustion and ventilating air must not be obstructed.

• Do not block or in any way restrict jacket air inlet slots located the
bottom front of the water heater.

Provide adequate air for combustion and ventilation. An insufficient supply of
air will cause recirculation of combustion products resulting in air contamination
that may be hazardous to life. Such a condition often will result in a yellow,
luminous burner flame, causing carboning or sooting of the combustion chamber,
burners and flue tubes with possible damage to the water heater.

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When an exhaust fan is installed in the same room with a heater, sufficient
openings for air must be provided in the walls. Undersized openings will cause
air to be drawn into the room through the chimney, causing recirculation of
combustion products.

Unconfined Spaces

In unconfined spaces in buildings, infiltration may be adequate to provide air
for combustion, ventilation and dilution of flue gases. However, in buildings of
tight construction (for example, weather stripping, heavily insulated, caulked,
vapor barrier, etc.), additional air may need to be provided using the methods
described above under CONFINED SPACES: All Air From Outdoors or SPECIALLY
ENGINEERED INSTALLATIONS.

Confined Spaces

Confined spaces are spaces defined as having less than 50 ft.3 of space per
1,000 BTU (15m3/.29kw) per hour of input.

All Air From Inside the Building: The confined space shall be provided with
two permanent openings communicating directly with an additional room(s) of
sufficient volume so that the combined volume of all spaces meets the criteria
for an unconfined space. The total input of all gas utilization equipment installed
in the combined space shall be considered in making this determination. Each
opening shall have a minimum free area of 1 square inch per 1000 BTU
(2.54cm2/.29kw) per hour of the total input rating of all gas utilization equipment
in the confined space, but not less than 100 square inches (254cm2). One
opening shall be within 12 inches (31cm) of the top and one within 12 inches
(31cm) of the bottom of the enclosure.

All Air From Outdoors: The confined space shall be provided with two
permanent openings, one commencing within 12 inches (31cm) of the top and
one commencing within 12 inches (31cm) from the bottom of the enclosure.
The openings shall communicate directly, or by ducts, with the outdoors or
spaces (crawl or attic) that freely communicate with the outdoors.

1. When directly communicating with the outdoors, each opening shall have
a minimum free area of 1 square inch per 4000 BTU (2.54cm2/1.2kw) per
hour of total input rating of all equipment in the enclosure.

2. When communicating with the outdoors through vertical ducts, each opening
shall have a minimum free area of 1 square inch per 4000 BTU (2.54cm2/

1.2kw) per hour of total input rating of all equipment in the enclosure.

WATER CONNECTIONS

Note:

BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE.

After shutting off the main water supply, open a faucet to relieve the water line
pressure to prevent any water from leaking out of the pipes while making the
water connections to the water heater. After the pressure has been relieved,
close the faucet. The COLD water inlet and HOT water outlet are identified on
the top of the water heater. The fittings at the cold water inlet and hot water
outlet are dielectric waterway fittings with 3/4" NPT male thread. Make the
proper plumbing connections between the water heater and the plumbing
system to the house. Install a shut-off valve in the cold water supply line.

CAUTION

If sweat fittings are to be used, DO NOT apply heat to the nipples on top of the
water heater. Sweat the tubing to the adapter before fitting the adapter to the
water connections. It is imperative that heat is not applied to the nipples containing
a plastic liner.

WARNING

FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED ¾” X ¾”
TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE
MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM
EXCESSIVE TEMPERATURE AND PRESSURES.

If this water heater is installed in a closed water supply system, such as the one
having a back-flow preventer in the cold water supply, provisions shall be Made
to control thermal expansion. DO NOT operate this water heater in a closed
system without provisions for controlling thermal expansion. Your water supplier
or local plumbing inspector should be contacted on how to control this situation.

After installation of the water lines, open the main water supply valve and fill
the water heater. While the water heater is filling, open several hot water
faucets to allow air to escape from the water system. When a steady stream
of water flows through the faucets, close them and check all water connections
for possible leaks. NEVER OPERATE THE WATER HEATER WITHOUT

FIRST BEING CERTAIN IT IS FILLED WITH WATER.

3. When communicating with the outdoors through horizontal ducts, each
opening shall have a minimum free area of 1 square inch per 2000 BTU
(2.54cm2/.6kw) per hour of total input rating of all equipment in the
enclosure.

4. When ducts are used, they shall be of the same cross-sectional area as the
free area of the openings to which they connect. The minimum dimension
of rectangular air ducts shall be not less than 3 inches (7.5cm)

Specially Engineered Installations

The requirements noted under CONFINED SPACES above shall not necessarily
govern when special engineering, approved by the authority having jurisdiction,
provides an adequate supply of air for combustion, ventilation, and dilution of
flue gases.

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For protection against excessive temperatures and pressure, install

WARNING

temperature and pressure protective equipment required by local codes,
but not less than a combination temperature and pressure relief valve
certified by a nationally recognized testing laboratory that maintains
periodic inspection of production of listed equipment or materials as
meeting the requirements of the Standard for Relief Valves and Automatic

Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22 or the
Standard CAN1-4.4. Temperature and Pressure and the Standard CAN1-

4.4, Temperature, Pressure, Temperature and Pressure Relief Valves and
Vacuum Relief Valves. The combination temperature and pressure relief

valve shall be marked with a maximum set pressure not to exceed the
maximum working pressure of the water heater. The combination
temperature and pressure relief valve shall also have an hourly rated
temperature steam BTU discharge capacity not less than the hourly
rating of the water heater.

Install the combination temperature and pressure relief valve into the
opening provided and marked for this purpose on the water heater.
NOTE: Some models may already be equipped or supplied with a
combination temperature and pressure relief valve. Verify that the
combination temperature and pressure relief valve complies with local
codes. If the combination temperature and pressure relief valve does
not comply with local codes, replace it with one that does. Follow the
installation instructions above on this page.

appliances such as dishwashers and automatic clothes washers may require
increased temperature water. By setting the thermostat on this water heater to
obtain the increased temperature water required by these appliances, the
potential for scald injury increases. To protect against injury, an anti-scald
tempering valve should be installed in the water system. This valve will reduce
point of discharge temperature by mixing cold and hot water in branch supply
lines. Such valves are available from the manufacturer of this water heater or
a local plumbing supplier. Please consult with a plumbing professional.

Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within six (6) inches
(15.2 cm) above, or any distance below the structural floor and cannot
contact any live electrical part. The discharge line is to be installed to
allow for complete drainage of both the combination temperature and
pressure relief valve and the discharge line. The discharge opening must
not be subjected to blockage or freezing. DO NOT thread, plug or cap
the discharge line. It is recommended that a minimum clearance of four
(4) inches (10.2 cm) be provided on the side of the water heater for
servicing and maintenance of the combination temperature and pressure
relief valve.

Do not place a valve between the combination temperature and pressure
relief valve and the tank.

WARNING

Hydrogen gas can be produced in an operating water heater
that has not had water drawn from the tank for a long period
of time (generally two weeks or more). Hydrogen gas is
extremely flammable. To prevent the possibility of injury under
these conditions, we recommend the hot water faucet to be
open for several minutes at the kitchen sink before you use any
electrical appliance which is connected to the hot water system.
If hydrogen is present, there will be an unsual sound such as air
escaping through the pipes as hot water begins to flow. Do not

smoke or have open flame near the faucet at the time it is open.

This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury. Certain

GAS CONNECTIONS

The gas supply lines must meet all requirements of the National Fuel Gas Code
ANSI Z223.1-(Latest Edition) and/or in Canada CAN/CGA B149 Installation
Codes - (Latest Editions).

The minimum permissible gas supply pressure for the purpose of input
adjustment is 1.0" water column (.25kPa) above the operating manifold pressure.
See the rating plate and combination gas control for the manifold pressure and
gas type. The maximum permissible gas supply pressure is 14.0" water column
(3.5kPa) for natural gas and liquefied petroleum gases/propane gas.

1. Connect this water heater only to the type of gas (Natural or Propane
gas) as shown on the rating plate. Use clean 1/2 inch black iron pipe.
(Dirt and scale from the pipe can enter the combination control and
cause it to malfunction). The inlet gas line must have a minimum length
of 3" (7.6 cm) drip leg (sediment trap) installed as close to the water
heater’s combination gas control as possible. A ground joint union must
be installed in the gas supply line feeding the water heater to permit
servicing of the water heater. Compounds used on the threaded joints of
the gas piping must be resistant to the action of liquefied petroleum
gases/propane gas.

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2. This water heater and its gas connection must be leak tested before
placing the water heater in operation. Check for gas leaks with a soap
and water solution and a brush or a commercial leak detector fluid.

NEVER USE A MATCH OR OPEN FLAME FOR TESTING!

CAUTION

The water heater and individual shutoff valve must be disconnected from the gas
supply piping system during any pressure testing of the system at test pressures in
excess of ½ psi (3.5kPa). The water heater must be isolated from the gas supply
piping system by closing its manual shutoff valve during any pressure testing of
the gas supply system at test pressures equal to or less than ½ psi (3.5kPa). The
supply line must be capped when not connected to the water heater.

GENERAL OPERATION

WARNING

Water heaters are heat producing appliances. To avoid damage or injury there
shall be no materials stored against the water heater or vent-air intake system,
and proper care shall be taken to avoid unnecessary contact (especially by children)
with the water heater and vent-air intake system. UNDER NO

CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS GASOLINE
OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS
WA TER HEATER, VENT-AIR INTAKE SYSTEM OR IN ANY LOCATION
FROM WHICH FUMES COULD REACH THE WA TER HEATER.

FOR YOUR SAFETY READ BEFORE LIGHTING

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 must be lighted by hand. When lighting the pilot,

follow these instructions exactly.

B. 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 DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any telephone in your building.

• Immediately call your gas supplier from a neighbor’s telephone. 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 turn 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 and to replace any part of the control system
and any gas control which has been under water.

TO FILL THE WATER HEATER

1. Close the water heater drain valve by turning the knob clockwise

2. Open the cold water supply shut-off valve.

3. Open several hot water faucets to allow air to escape from the system.

4. When a steady stream of water flows from the faucets, the water heater
is filled. Close the faucets and check for water leaks at the water heater
drain valve, combination temperature and pressure relief valve and the
hot and cold water connections.

TO DRAIN THE WATER HEATER

Should it become necessary to completely drain the water heater, make sure
you follow the steps below:

1. Rotate the thermostat dial counter-clockwise

to the lowest possible

position.

2. Rotate gas control knob clockwise to the “OFF” position.

3. Shut off the gas supply to the water heater.

4. Close the cold water supply shut-off valve.

5. Open the drain valve on the water heater by turning the knob
counter-clockwise. The drain valve has threads on the end that will allow the
connection of a standard hose coupling.

.

LIGHTING INSTRUCTIONS

1. Stop! Read the safety information above on this page.

2. Rotate the thermostat dial coutner-clockwise to the lowest position.

3. Rotate gas control knob clockwise to the “OFF” position.

4. Wait five (5) minutes to clear out any gas including near the floor. If you smell
gas, STOP! Follow “B” in the safety information above on this page. If you don’t
smell gas,go to the next step.

5. Remove outer door.

6. Locate piezo igniter button.

7. Look into sight glass window on inner door to view pilot.

8. Turn the gas control knob counterclockwise to “PILOT” position.

9. Depress and hold down gas control knob. Immediately depress piezo igniter button until
you hear a “click” sound then release. Continue to hold down the gas control knob for
approximately one (1) minute after the pilot is lit.If the pilot is not lit, continue to
depress and release piezo igniter button. Release the gas control knob and it should pop
back up. Pilot should remain lit. If it goes out, repeat steps 4 through 9.

* If red button or knob does not pop up when released, stop and immediately call

service technician or gas supplier.

* If the the pilot will not stay lit after several tries, turn the gas control knob to

10. Replace outer door.

11. Turn gas control knob counterclockwise to “ON” position.

12. Rotate the thermostat knob clockwise until the minimal acceptable temperature is
obtained.

1. Rotate the thermostat dial counterclockwise to the lowest position.

2. Rotate gas control knob clockwise to “OFF” position.

clockwise to “OFF” and call your servaice technician or gas supplier.

TO TURN OFF GAS TO APPLIANCE

6. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater.”

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THERMOSTAT ADJUSTMENT

The thermostat dial is set to its lowest temperature setting when shipped from
the factory. Remember that lower temperature settings are more
energy efficient. Adjust the temperature by turning the thermostat dial. It
is suggested that the starting point setting not be greater than the “ “ mark
on the thermostat dial (approximately 120°F [49°C]) as indicated below.
Rotate the thermostat dial clockwise
setting. Rotate the thermostat dial counter-clockwise

to increase the temperature

to decrease
the temperature setting. Adjust the thermostat dial until the minimum acceptable
temperature is achieved (See figure 2 for approximate temperature settings).

Figure 2

much air will cause the flame to lift off the burner ports and create noisy
operation. Too little air will result in soot formation. The main burner flame
should light smoothly from the pilot.

Steel Burner: These models are equipped with self adjusting air mixture and
do not have an adjustable air shutter (See Figure 4). At periodic intervals, a
visual check of the main burner and pilot flames should be made to determine
if they are burning properly. The main burner flame should light smoothly from
the pilot.

Figure 3

Figure 4

Hotter water increases the risk of scald injury. Scalding may occur

DANGER

within five (5) seconds at a temperature setting of 135°F (57°C). To
protect against hot water injury, install an anti-scald tempering valve
in the water system. This valve will reduce point of discharge
temperature by mixing cold and hot water in branch water lines. A
licensed plumbing professional or local plumbing authority should be
consulted.
Note: This water heater is equipped with an energy cut out device to
prevent overheating. Should overheating occur or the gas supply fail
to shut off, turn off the manual gas control valve to the appliance and
call a qualified service technician.
Note: Whenever the water heater is filled with cold water, condensate
will form on the cool tank surface and drops of water will fall on the
hot burner and combustion chamber surfaces producing a “sizzling”
noise. Condensation is normal and does not indicate a leak. It will
disappear when the tank becomes heated.

BURNER FLAME CHECKS

Cast Iron Burner: At the time of installation and at periodic intervals (not

more than 6 months), a visual check of the main burner and pilot flames
should be made to determine if they are burning properly. For ideal operation,
the gas and air must be properly proportioned. The proper air-gas mixture is
obtained by adjusting the air shutter on the mixer face of the main burner (See
Figure 3). To adjust for proper burning, loosen the air shutter nut, rotate shutter
to close the opening in the burner then slowly rotate the shutter until the yellow
tips disappear and the flame becomes blue. Tighten the air shutter nut. Too

MAINTENANCE

WARNING

Water heaters are heat producing appliances. To avoid damage or injury there
must be no materials stored against the water heater or vent-air intake system
and proper care must be taken to avoid unnecessary contact (especially by
children) with the water heater and vent-air intake components. UNDER NO

CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS
GASOLINE OR PAINT THINNER BE USED OR STORED IN THE
VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR IN
ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER
HEATER OR VENT-AIR INTAKE SYSTEM.

IMPORTANT

The water heater should be inspected at a minimum annually by a
qualified service technician for damaged components and/or joints
not sealed. DO NOT operate this water heater if any part is found
damaged or if any joint is found not sealed.

The following maintenance should be performed by a qualified service technician
at the minimum periodic intervals suggested below. In some installations, the
maintenance interval may be more frequent depending on the amount of use
and the operating conditions of the water heater. Regular inspection and
maintenance of the water heater and vent-air intake system will help to ensure
safe and reliable operation.

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FV-I&S

1. Annually check the operation of the thermostat.

2. The flow of combustion and ventilation air MUST NOT be restricted.
Make sure slots in jacket are open and unobstructed. Clear jacket slot
openings of any dirt, dust, or other restrictions. WARNING! The ventilation
air system may be HOT.

3. At all times keep the water heater area clear and free from combustible
materials, gasoline and other flammable vapors and liquids.

9. A combination sacrificial anode rod/hot water outlet nipple has been
installed to extend tank life. The anode rod should be inspected periodically
(every 2 years) and replaced when necessary to prolong tank life. Water
conditions in your area will influence the time interval for inspection and
replacement of the anode rod. Contact the plumbing professional who
installed the water heater or the manufacturer listed on the rating plate
for anode replacement information. The use of a water softener may
increase the speed of anode consumption. More frequent inspection of
the anode is needed when using softened (or phosphate treated) water.

4. Bi-annually conduct a visual check of the main and pilot burner flames to
determine that they are burning properly. See Burner Flame Check section
of this installation and operation manual. If sooting or other burner
anomalies are evident, shut down the water heater by turning off the gas
per the instructions listed in this manual or as listed on the water heater.

5. Annually remove the inner door and main burner assembly to clean
orifices and related parts of any dirt or other foreign material. Inspect
the burner ports for obstructions or debris and clean with a wire brush as
needed. Wire brush and/or vacuum clean the combustion chamber as
needed to remove scale deposits and debris. NOTE: It is imperative for
proper operation of the water heater that the inner door be replaced in
the original location, making certain the resettable thermal switch is
properly connected to the gas control wire leads provided.

WARNING

• Do not operate water heater with jumpered, altered,
loosely tightened or absent controls and/or components.

• Do not operate water heater with replacement controls
and/or components which are not exact duplicates or
original equipment.

• Thoroughly inspect and replace, (as needed) burner inner
door gasket and/or sight window gasket any time burner
inner door is removed or disturbed.

• Replace water heater if involved in flammable vapors
incident.

FOR YOUR SAFETY, DO NOT ATTEMPT REPAIR OF COMBINATION GAS

CAUTION

CONTROL, BURNERS OR GAS PIPING. REFER REPAIRS TO A QUALIFIED
SERVICE TECHNICIAN.

Contact your supplier or plumbing professional for replacement parts or contact
the company at the address given on the rating plate of the water heater.

Provide the part name, model and serial numbers of the water heater when
ordering parts.

When lifting lever of the combination temperature and

WARNING

pressure relief valve, hot water will be released under
pressure. Be careful that any released water does not result
in bodily injury or property damage.

6. At least once a year, check the combination temperature and pressure
relief valve to ensure that the valve has not become encrusted with lime.
Lift the lever at the lever at the top of the valve several times until the
valve seats properly without leaking and operates freely.

WARNING! THIS WATER MAY BE HOT..

7. Monthly drain off a gallon of water to remove silt and sediment.

8. If the combination temperature and pressure relief valve on the appliance
discharges periodically, this may be due to thermal expansion in a closed
water supply system. Contact the water supplier or local plumbing inspector
on how to correct this situation. Do not plug the combination temperature
and pressure relief valve outlet.

8

Figure 5

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THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF:

GAS WATER HEATERS

SUITABLE FOR WATER (POTABLE) HEATING AND SPACE HEATING

1. All piping components connected to this water heater for space heating applications must be suitable for use with potable water.

2. Toxic chemicals, such as those used for boiler treatment, must not be introduced into potable water used for space heating.

3. This water heater must not be connected to an existing heating system or component(s) previously used with a non-potable water heating

appliance.

4. When the system requires water for space heating at temperatures higher than required for other means, such as a tempering valve shall be installed

to temper the water for those uses in order to reduce the scald hazard potential.

Please refer to figure 6 and figure 7 for suggested piping arrangements.

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FV-I&S

Figure 6

10

Figure 7

FV-I&S

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Printed in USA