A.O. Smith FDV Owner's Manual - page 8
8
OPERATION
NEVER OPERATE THE HEATER WITHOUT FIRST BEING CER-
TAIN 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 Z 223.1/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 IN-
JURY. 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, 5621 W. 115th Street, Alsip, IL 60803.
FIGURE 13
14. Seal all the 5 inch tube joints with silicone sealant including
the elbow joint to the collar on the heater's air supply box.
FIGURE 14
15. The fixed installation height is 67-7/8 inches from the surface
that the heater rests on to the center of the vent tube.
Do not attempt to extend the air supply tube beyond the
dimensions shown (10" max.).
Contact your supplier if additional information is needed before
starting installation.
E - REAR VENTING
F - SIDE VENTING**
GAL.
MIN.
MAX.
MIN.
MAX.
40
4-1/8"
14-1/8"
9-1/8"
20-1/8"
50
3-1/8"
13-1/8"
8-1/8"
18-1/8"
FIGURE 15