A.O. Smith 315795-000 MH - Manuel (Page 18)

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Step 8. Place screwdriver in slot “B”, see Figure 30 on page 19.
Depress and turn counterclockwise ( ) to stop. Control
screw must be in “IN” position for propane (L.P.) gas and
in “OUT” position for natural gas. STOP! Read label “For
Your Safety” located on your water heater.
Step 9. Set the thermostat to lowest setting by turning the water
temperature dial clockwise, ( ) to its lowest temperature
setting (with arrow on dial) as shown.
Step 10. Turn gas control knob clockwise
to “OFF” position.
Knob cannot be turned from “PILOT” to “OFF” unless knob
is depressed slightly. DO NOT FORCE.
Step 11. Wait fi ve minutes to clear out any gas. If you then smell
gas, STOP! Follow “B” in the safety information on “For
Your Safety” label. If you don’t smell gas, got to the next
step.
Step 12. The pilot is located in front of the burner, see Figure 32 on
page 19.
Step 13. If you don’t smell gas, turn knob on gas control
counterclockwise to “PILOT” position.
Step 14. Push in control knob all the way and hold down. Immediately
light the pilot using the Piezo Igniter. Continue to hold
control knob in for about one (1) minute after the pilot is lit.
Release knob and it will pop back up. Pilot should remain
lit. If it goes out, repeat Steps 9 through 12.
• If knob does not pop up when released, stop and
immediately call the local gas supplier.
• If the pilot will not stay lit after several tries, depress
and turn the gas control knob clockwise to
“OFF” and call the gas supplier.
Step 15. Check for gas leaks with only pilot fl ame burning using
soapy water solution, not a match or open fl ame. Check
for gas leaks at fi ttings “F” and “G”, see Figure 34 page
19 and at fi ttings “J”, see Figure 31 page 19.
Step 16. Make sure temperature adjustment dial is turned clockwise
( ) in its lowest position, see Figure 30 page 19.
Step 17. Replace outer door.
Step 18. At arm’s length away turn gas control knob to the full
“ON” position. WARNING: Do not use gas control knob
to regulate gas fl ow. Turn temperature adjustment dial
counterclockwise (
) until gas fl ows to main burner and
ignites.
Step 19. With a soapy water solution, not a match or open fl ame,
check for gas leaks at gas connection “H”, see Figure 31
page 19. If gas leak occurs, turn off immediately by shutting
off gas cock at inlet to control, or by turning gas control
knob
to “PILOT” pushing down and turning to “OFF”.
Repair gas leak as necessary, and repeat Steps 9 through
19.
Step 20. At arm’s length away, set the thermostat to desired setting.
The mark ( ) HOT indicative of approx. 120°F (49°C)
is preferred starting point. Some local laws may require
a lower starting point. If hotter water is desired see the
“Temperature Regulation” section in this manual.
Step 21. Replace the outer door if not replaced in Step 17.
Step 22. Remove adhesive label found in conversion kit and place
next to rating plate. Mark label indicating for which type
gas the water heater is now equipped.