A.O. Smith FMV-30, FMV-40, FMV-50, 185874-001 instruction manual

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 21.

8.Unplug wire from igniter assembly mounted on the side of the gas valve.

9.Remove flange nuts holding inner door in place with 3/8” nut driver, see Figure 22.

FIGURE 22.

10.Loosen flare nut “T” holding to bottom of gas valve with 3/8” open-end wrench and pull down to remove, see Figure 23.

11.Loosen flare 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 flange 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.

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 orifice “O” from the burner tube. Install the natural gas burner orifice 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.

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