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to flow.
THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR
THE FAUCET AT THE TIME IT IS OPEN.
INSULATION BLANKETS
Insulation blankets available to the general public for external use
on gas water heaters are not necessary with A.O. Smith water heater.
The purpose of an insulation blanket is to reduce the standby heat
loss encountered with storage tank water heaters. Your A.O. Smith
water heater meets or exceeds the ASHRAE/IES 90.1b-1992
standards with respect to insulation and standby loss requirement
making an insulation blanket unnecessary.
WARNING
Should you choose to apply an insulation blanket to this heater, you
should follow these instructions. Failure to follow these instructions
can result in fire, asphyxiation, serious personal injury or death.
•
Do not apply insulation to the top of the water heater, as this will
interfere with safe operation of the draft hood.
•
Do not cover the outer door, thermostat or temperature &
pressure relief valve.
•
Do not allow insulation to come within 2" (51 mm) of the floor to
prevent blockage of combustion air flow to the burner.
•
Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
•
Do obtain new warning and instruction labels from A.O. Smith
for placement on the blanket directly over the existing labels.
•
Do inspect the insulation blanket frequently to make certain it
does not sag, thereby obstructing combustion air flow.
INSTALLATION INSTRUCTIONS
REQUIRED ABILITY
INSTALLATION OR SERVICE OF THIS WATER HEATER REQUIRES
ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN
THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING AND
GAS SUPPLY WORK ARE REQUIRED.
LOCATING THE HEATER
When installing the heater, consideration must be given to proper
location. Location selected should be as close to the stack or
chimney as practicable, with adequate air supply and as
centralized with the piping system as possible.
WARNING
THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH
AS GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER
AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR
ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE STORED,
OPERATED OR REPAIRED. FLAMMABLE VAPORS ARE HEAVY
AND TRAVEL ALONG THE FLOOR AND MAY BE IGNITED BY THE
HEATER’S PILOT OR MAIN BURNER FLAMES CAUSING FIRE OR
EXPLOSION.
SOME LOCAL CODES PERMIT OPERATION OF GAS
APPLIANCES IF INSTALLED 18 INCHES (457 mm) OR MORE
ABOVE THE FLOOR. THIS MAY REDUCE THE RISK IF LOCATION
IN SUCH AN AREA CANNOT BE AVOIDED.
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A
CARPETED FLOOR. A FIRE HAZARD MAY RESULT.
Instead the
water heater must be placed on a metal or wood panel extending
beyond the full width and depth by at least 3 inches (76 mm) in any
direction. If the heater is installed in a carpeted alcove or closet,
the entire floor shall be covered by the panel. Also, see the drain
requirements.
THIS HEATER SHALL BE LOCATED OR PROTECTED SO IT IS
NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE.
WARNING
FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY
OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST
NEVER BE PLACED ON OR ADJACENT TO THE HEATER. OPEN
CONTAINERS OF FLAMMABLE MATERIAL SHOULD NOT BE
STORED OR USED IN THE SAME ROOM WITH THE HEATER.
THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE IT
WILL BE SUBJECT TO FREEZING.
THE HEATER SHOULD BE LOCATED IN AN AREA WHERE
LEAKAGE FROM THE HEATER OR CONNECTIONS WILL NOT
RESULT IN DAMAGE TO THE ADJACENT AREA OR TO LOWER
FLOORS OF THE STRUCTURE.
WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE
DRAIN PAN SHOULD BE INSTALLED UNDER THE HEATER.
Such pans should be fabricated with sides at least 2" (51 mm)
deep, with length and width at least 2" (51 mm) greater than the
diameter of the heater and must be piped to an adequate drain.
The pan must not restrict combustion air flow.
Drain pans suitable for these heaters are available from your
distributor or A. O. Smith Water Products Company, 5621 West
115th Street, Alsip, IL 60803. In Canada contact A.O. Smith
Enterprises, LTD., 768 Erie Street, Stratford, Ontario,
Canada N5A 6T3.
For appliance installation locations with elevations above
2000 feet (610 meters), refer to HIGH ALTITUDE INSTALLATIONS
section of this manual for input reduction procedure.
HIGH ALTITUDE INSTALLATIONS
WARNING
INSTALLATIONS ABOVE 2000 FEET (610 METERS) REQUIRE
REPLACEMENT OF THE BURNER ORIFICE IN ACCORDANCE
WITH SECTION 8.1.2 OF THE NATIONAL FUEL GAS CODE (ANSI
Z223.1). FOR CANADIAN INSTALLATIONS CONSULT CANADIAN
INSTALLATIONS CODES AND CAN/CSA B149.1-00. FAILURE TO
REPLACE THE ORIFICE WILL RESULT IN IMPROPER AND
INEFFICIENT OPERATION OF THE APPLIANCE RESULTING IN
THE PRODUCTION OF INCREASED LEVELS OF CARBON
MONOXIDE GAS IN EXCESS OF SAFE LIMITS WHICH COULD
RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
You should contact your gas supplier for any specific changes
which may be required in your area.
As elevation above sea level is increased, there is less oxygen
per cubic foot of air. Therefore, the heater input rate should be
reduced at high altitudes for satisfactory operation with the reduced
oxygen supply. Failure to make this reduction would result in an
overfiring of the heater causing sooting, poor combustion and/or
unsatisfactory heater performance.