A.O. Smith 185874-001 Water Heater User Manual


 
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FIGURE 21.
8. Unplug wire from igniter assembly mounted on the side of the
gas valve.
9. Remove ange nuts holding inner door in place with 3/8” nut
driver, see Figure 22.
FIGURE 22.
10. Loosen are nut “T” holding to bottom of gas valve with 3/8”
open-end wrench and pull down to remove, see Figure 23.
11. Loosen are nut “P” holding pilot line to bottom of gas valve
with 7/16” open-end wrench and pull tube down to remove, see
Figure 23.
12. Loosen ange nut “B” holding burner tube to bottom of gas valve
with 3/4” open-end wrench and pull down to remove, see Figure
23.
13. Grasp burner tube and remove burner assembly through inner
door opening.
FIGURE 23.
14. To remove the propane (LP) gas pilot assembly, remove the
Phillips-head screw holding the TCO bracket to the burner tube
bracket, see Figure 24.
FIGURE 24.
15. Remove the Phillips-head screw holding the pilot bracket to the
burner head, see Figure 25.
FIGURE 25.
16. Remove the two Phillips-head screws holding the propane burner
head to the burner tube assembly, see Figure 26.
17. Using 3/8” boxed-end wrench remove the propane gas burner
orice “O” from the burner tube. Install the natural gas burner
orice and tighten securely, see Figure 26.
18. Locate and install the natural gas burner head to the burner tube
using the two Phillips-head screws, see Figure 26.
FIGURE 26.