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19
23. Pull the vent collar from the elbow to be against the wall
and secure it using the screws provided.
FIGURE 96
24. Lock the 6” vent extension to the vent elbow by using two
screws provided, placing them 180° apart.
FIGURE 97
T & P VALVE AND PIPE INSULATION
Remove insulation for T & P valve and pipe connections from
carton.
Fit pipe insulation over the incoming cold water line and the hot
water line. Make sure that the insulation is against the top cover
of the heater.
Fit T & P valve insulation over valve. Make sure that the
insulation does not interfere with the lever of the T & P valve.
Secure all insulation using tape.
FIGURE 98
OPERATION
NEVER OPERATE THE HEATER WITHOUT FIRST BEING
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND
PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE
OPENING OF THE HEATER. DO NOT ATTEMPT TO OPERATE
HEATER WITH COLD WATER INLET VALVE CLOSED.
FILLING
1. Close the heater drain valve (Fig. 1) by turning handle
clockwise.
2. Open a nearby hot water faucet to permit the air in the
system to escape.
3. Fully open the cold water inlet pipe valve (Fig. 1) allowing the
heater and piping to be filled.
4. Close the hot water faucet as water starts to flow.
5. The heater is ready to be operated.
HIGH ALTITUDE INSTALLATIONS
WARNING
INSTALLATIONS ABOVE 2,000 FT. REQUIRE REPLACEMENT OF
THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL
FUEL GAS CODE (ANSI Z223.1/NFPA 54). FAILURE TO
REPLACE THE ORIFICE COULD RESULT IN IMPROPER AND
INEFFICIENT OPERATION OF THE APPLIANCE, PRODUCING
CARBON MONOXIDE GAS IN EXCESS OF SAFE LIMITS, WHICH
COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
CONTACT YOUR GAS SUPPLIER FOR ANY SPECIFIC
CHANGES WHICH MAY BE REQUIRED IN YOUR AREA.
A. O. Smith builds models specifically for high altitude service.
Please check the rating plate before making changes.
TEMPERATURE REGULATION
DANGER
THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT
WATER TEMPERATURES REQUIRED FOR AUTOMATIC
DISHWASHER AND LAUNDRY USE CAN CAUSE PAINFUL
SCALDING WITH POSSIBLE SERIOUS AND PERMANENT
INJURY. THE TEMPERATURE AT WHICH INJURY OCCURS
VARIES WITH THE PERSON’S AGE AND THE TIME OF THE
EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN,
AGED OR DISABLED PERSONS INCREASES THE HAZARDS
TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT
WATER TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER
LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A
BATHTUB OR SHOWER.
THE WATER HEATER SHOULD BE LOCATED IN AN AREA
WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS. IF
A SUITABLE AREA IS NOT AVAILABLE, A COVER SHOULD
BE INSTALLED OVER THE THERMOSTAT TO PREVENT
TAMPERING.
Suitable covers are available through A.O. Smith
Water Products Company, 500 Tennessee Waltz Parkway,
Ashland City, TN 37015. Phone: 1-800-433-2545, fax: 1-800-
433-2515, email: www.parts@hotwater.com.