Replacing The Pilot/ Pilot Tube Assembly; Cleaning The Combustion Chamber And Flame-Arrestor - Kenmore POWER MISER 153.339372 Owner's Manual

6. Position the new thermocouple through the bottom opening
of the manifold component block (Figure 34). Be sure
igniter wire is positioned through the small opening of the
manifold component block.
7. Re-attach the burner. Note the orientation of the burner
(Figure 33.)
8. See "Replacing the Manifold/Burner Assembly."
FERRULE NUT
THERMOCOUPLE
MANIFOLD TUBE
MANIFOLD COMPONENT
BLOCK
FIGURE 34.
FIGURE 35.

Replacing the Pilot/ Pilot Tube Assembly

1. Remove the manifold/burner assembly. See "Removing
the Manifold/Burner Assembly."
2. Lift the retainer clip straight up from the back of the manifold
component block (using a flat-blade screwdriver), then
remove the manifold component block from the manifold
door (Figure 34.)
IMPORTANT: Be careful not to bend or alter the position of the
pilot tube. It will be used as a bending template for the new
pilot assembly.
3. Take off the burner by removing the two (2) screws located
underneath the burner. See Figure 33.
4. Remove and keep the screw securing the pilot assembly to
the pilot bracket. (Figure 36)
5. Remove and keep the old pilot tube and thermocouple.
6. Using the old pilot tube as a guide, bend the new pilot tube
to match the old one. NOTE: Make only the bends closest
to the pilot before going to the next step. (Figure 36)
OLD PILOT ASSEMBLY
PILOT TUBE
IGNITER WIRE
THERMOCOUPLE
FIGURE 36.
IGNITER WIRE
PILOT
PILOT BRACKET
OTHER FITTINGS
NOT SHOWN
FOR CLARITY
RETAINER
CLIP
PILOT TUBE MANIFOLD/BURNER
DOOR OPENING
SCREW
OTHER FITTINGS
NOT SHOWN
FOR CLARITY
FIRST BEND(S)
7. Route the new pilot tube, thermocouple, and igniter wire
through the manifold/burner door opening. (Figure 34)
8. Connect the new pilot tube and tighten the nut securing it
to the pilot assembly. IMPORTANT: Keep the pilot orifice in
the pilot when making the connection. Do not operate the
water heater without the pilot orifice installed.
9. Install the thermocouple, making sure that it is fully seated.
10. Re-attach the pilot assembly to the pilot bracket and secure
using the screw removed earlier.
11. Re-attach the burner. Note the orientation of the burner
(Figure 33).
12. Position the new pilot tube through the largest opening of
the manifold component block. NOTE: The largest opening
should be located at the top position. The igniter wire
should be located in the middle opening and thermocouple
in the bottom opening (Figure 37).
13. Reposition the manifold component block in the manifold
door opening and secure it with the retainer clip.
14. Carefully bend the new pilot tube and thermocouple to
match the bend of the manifold tube. NOTE: When bending,
DO NOT crimp or crease the pilot tube or thermocouple.
(Figure 34)
15. Before you proceed to the next step, install the new brass
ferrule nut in the gas control valve/thermostat's pilot tube
opening. HAND TIGHTEN ONLY.
16. See "Replacing the Manifold/Burner Assembly."
Cleaning the Combustion Chamber and
Flame-arrestor
1. Follow procedure outlined in "Removing the Manifold/
Burner Assembly."
2. Use a vacuum cleaner/shop vac to remove all loose debris
in the combustion chamber (Figure 38). Use compressed
air to clear any dust or debris that may have accumulated
in the flame-arrestor.
DOOR GASKET
BASE-RING
FILTER
3. Reassemble by following the procedure under "Replacing
the Manifold/Burner Assembly."
30
PILOT TUBE
IGNITER WIRE
THERMOCOUPLE
MANIFOLD COMPONENT BLOCK
FIGURE 37.
COMBUSTION CHAMBER
FLAME ARRESTOR
FIGURE 38.