A.O. Smith 185762-000 - Manual (Page 16)

16
5. OPEN the water heater drain valve to allow for tank draining.
NOTE: If the water heater is going to be shut down and drained
for an extended period, the drain valve should be left open with
hose connected allowing water to terminate to an adequate drain.
6. Close the drain valve.
7. Follow the instructions in the “Filling the Water Heater” section.
THERMOSTAT REMOVAL / REPLACEMENT
1. Turn “OFF” the electric power supply to the water heater.
2. Remove the outer door. Remove or fold up the insulation pad.
3. A. Models with lower thermostat without high limit: Lift
out the tab as shown below to unclip the terminal cover
from the thermostat. The terminal cover can now be
removed from the thermostat.
FIGURE 10.
B. Models with Upper or Lower Thermostat with High
Limit: Lift out the tab as shown below to unclip the
terminal cover from the thermostat. The terminal cover
can now be removed from the thermostat.
FIGURE 11.
4. Disconnect wires from thermostat and slide out of the bracket.
5. Remove the thermostat from behind the thermostat bracket.
6. Place the new lower thermostat in the bracket making sure it fi ts
fi rmly against the tank.
7. Attach the wires to the new thermostat.
NOTE: Some of the terminals may require straight-in wiring
through an eye-opening. If wires are now looped, recut and
strip wire 3/8” (9.525 mm) to a straight length and insert.
8. Put plastic terminal cover back in place.
9. Replace the insulation to cover the thermostat.
10. Replace outer door then turn the electric power on.
ELEMENT CLEANING / REPLACEMENT
NOTE: These instructions are written for element cleaning and
element replacement for the lower element.
To remove the element from the tank in order to clean or replace
it:
1. Before beginning turn “OFF” the electric power supply to the
water heater.
2. Turn off the water supply to the water heater at the water shut-off
valve or water meter, see Figure 12.